fi
case $host in
i?86-*-linux*|x86_64-*-linux*|powerpc-*-linux*|powerpc64-*-linux* \
-|amd64-*-freebsd*|i?86-*-freebsd*|ia64-*-freebsd*|arm*-*-linux*|sparc*-*-linux*|mips*-*-linux*|x86_64-apple-darwin*|aarch64*)
+|amd64-*-freebsd*|i?86-*-freebsd*|ia64-*-freebsd*|arm*-*-linux*|sparc*-*-linux*|mips*-*-linux*|x86_64-apple-darwin*)
pic_options='-fPIC'
;;
?86-pc-cygwin*|i?86-pc-cygwin*)
# available during cross-compilation
mono_cv_uscore=no
fi
- case "$host" in
- aarch64-*)
- support_boehm=no
- with_gc=sgen
- ;;
- esac
;;
*-*-nacl*)
host_win32=no
jit_wanted=true
interp_wanted=false
sgen_supported=false
-boehm_supported=true
case "$host" in
mips*)
TARGET=MIPS;
# sgen_supported=true
# AOT_SUPPORTED="no"
# ;;
- aarch64-*)
- # https://lkml.org/lkml/2012/7/15/133
- TARGET=ARM64
- arch_target=arm64
- JIT_SUPPORTED=yes
- sgen_supported=true
- boehm_supported=false
- ;;
s390x-*-linux*)
TARGET=S390X;
arch_target=s390x;
;;
esac
;;
- aarch64-*)
- TARGET=ARM64
- JIT_SUPPORTED=yes
- jit_wanted=true
- ;;
*)
AC_MSG_ERROR([Cross compiling is not supported for target $target])
esac
ARM)
AC_DEFINE(TARGET_ARM, 1, [...])
;;
-ARM64)
- AC_DEFINE(TARGET_ARM64, 1, [...])
- ;;
POWERPC)
AC_DEFINE(TARGET_POWERPC, 1, [...])
;;
dnl Use GCC atomic ops if they work on the target.
if test x$GCC = "xyes"; then
case $TARGET in
- X86 | AMD64 | ARM | ARM64 | POWERPC | POWERPC64 | MIPS | S390X | SPARC | SPARC64)
+ X86 | AMD64 | ARM | POWERPC | POWERPC64 | MIPS | S390X | SPARC | SPARC64)
AC_DEFINE(USE_GCC_ATOMIC_OPS, 1, [...])
;;
esac
fi
if test "x$target_mach" = "xyes"; then
- if test "x$TARGET" = "xARM" -o "x$TARGET" = "xARM64"; then
+ if test "x$TARGET" = "xARM"; then
AC_DEFINE(TARGET_IOS,1,[The JIT/AOT targets iOS])
CPPFLAGS_FOR_LIBGC="$CPPFLAGS_FOR_LIBGC -DTARGET_IOS"
CFLAGS_FOR_LIBGC="$CFLAGS_FOR_LIBGC -DTARGET_IOS"
AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
AM_CONDITIONAL(POWERPC64, test x$TARGET = xPOWERPC64)
AM_CONDITIONAL(ARM, test x$TARGET = xARM)
-AM_CONDITIONAL(ARM64, test x$TARGET = xARM64)
AM_CONDITIONAL(S390X, test x$TARGET = xS390X)
AM_CONDITIONAL(HOST_X86, test x$HOST = xX86)
AM_CONDITIONAL(HOST_AMD64, test x$HOST = xAMD64)
AM_CONDITIONAL(HOST_ARM, test x$HOST = xARM)
-AM_CONDITIONAL(HOST_ARM64, test x$HOST = xARM64)
AM_CONDITIONAL(CROSS_COMPILE, test "x$host" != "x$target")
AM_CONDITIONAL(JIT_SUPPORTED, test x$JIT_SUPPORTED = xyes)
mono/arch/sparc/Makefile
mono/arch/s390x/Makefile
mono/arch/arm/Makefile
-mono/arch/arm64/Makefile
mono/arch/ia64/Makefile
mono/arch/mips/Makefile
mono/interpreter/Makefile
esac
case $target in
-arm*-darwin*|aarch64*-*)
+arm*-darwin*)
CFLAGS="$CFLAGS -U_FORTIFY_SOURCE"
;;
i*86-*-darwin*)
--- /dev/null
+// CRC32.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2011 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// Last Saved: <2011-August-02 18:25:54>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the CRC32 class, which can do the CRC32 algorithm, using
+// arbitrary starting polynomials, and bit reversal. The bit reversal is what
+// distinguishes this CRC-32 used in BZip2 from the CRC-32 that is used in PKZIP
+// files, or GZIP files. This class does both.
+//
+// ------------------------------------------------------------------
+
+
+using System;
+using Interop = System.Runtime.InteropServices;
+
+namespace Ionic.Crc
+{
+ /// <summary>
+ /// Computes a CRC-32. The CRC-32 algorithm is parameterized - you
+ /// can set the polynomial and enable or disable bit
+ /// reversal. This can be used for GZIP, BZip2, or ZIP.
+ /// </summary>
+ /// <remarks>
+ /// This type is used internally by DotNetZip; it is generally not used
+ /// directly by applications wishing to create, read, or manipulate zip
+ /// archive files.
+ /// </remarks>
+
+ [Interop.GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d0000C")]
+ [Interop.ComVisible(true)]
+#if !NETCF
+ [Interop.ClassInterface(Interop.ClassInterfaceType.AutoDispatch)]
+#endif
+ internal class CRC32
+ {
+ /// <summary>
+ /// Indicates the total number of bytes applied to the CRC.
+ /// </summary>
+ public Int64 TotalBytesRead
+ {
+ get
+ {
+ return _TotalBytesRead;
+ }
+ }
+
+ /// <summary>
+ /// Indicates the current CRC for all blocks slurped in.
+ /// </summary>
+ public Int32 Crc32Result
+ {
+ get
+ {
+ return unchecked((Int32)(~_register));
+ }
+ }
+
+ /// <summary>
+ /// Returns the CRC32 for the specified stream.
+ /// </summary>
+ /// <param name="input">The stream over which to calculate the CRC32</param>
+ /// <returns>the CRC32 calculation</returns>
+ public Int32 GetCrc32(System.IO.Stream input)
+ {
+ return GetCrc32AndCopy(input, null);
+ }
+
+ /// <summary>
+ /// Returns the CRC32 for the specified stream, and writes the input into the
+ /// output stream.
+ /// </summary>
+ /// <param name="input">The stream over which to calculate the CRC32</param>
+ /// <param name="output">The stream into which to deflate the input</param>
+ /// <returns>the CRC32 calculation</returns>
+ public Int32 GetCrc32AndCopy(System.IO.Stream input, System.IO.Stream output)
+ {
+ if (input == null)
+ throw new Exception("The input stream must not be null.");
+
+ unchecked
+ {
+ byte[] buffer = new byte[BUFFER_SIZE];
+ int readSize = BUFFER_SIZE;
+
+ _TotalBytesRead = 0;
+ int count = input.Read(buffer, 0, readSize);
+ if (output != null) output.Write(buffer, 0, count);
+ _TotalBytesRead += count;
+ while (count > 0)
+ {
+ SlurpBlock(buffer, 0, count);
+ count = input.Read(buffer, 0, readSize);
+ if (output != null) output.Write(buffer, 0, count);
+ _TotalBytesRead += count;
+ }
+
+ return (Int32)(~_register);
+ }
+ }
+
+
+ /// <summary>
+ /// Get the CRC32 for the given (word,byte) combo. This is a
+ /// computation defined by PKzip for PKZIP 2.0 (weak) encryption.
+ /// </summary>
+ /// <param name="W">The word to start with.</param>
+ /// <param name="B">The byte to combine it with.</param>
+ /// <returns>The CRC-ized result.</returns>
+ public Int32 ComputeCrc32(Int32 W, byte B)
+ {
+ return _InternalComputeCrc32((UInt32)W, B);
+ }
+
+ internal Int32 _InternalComputeCrc32(UInt32 W, byte B)
+ {
+ return (Int32)(crc32Table[(W ^ B) & 0xFF] ^ (W >> 8));
+ }
+
+
+ /// <summary>
+ /// Update the value for the running CRC32 using the given block of bytes.
+ /// This is useful when using the CRC32() class in a Stream.
+ /// </summary>
+ /// <param name="block">block of bytes to slurp</param>
+ /// <param name="offset">starting point in the block</param>
+ /// <param name="count">how many bytes within the block to slurp</param>
+ public void SlurpBlock(byte[] block, int offset, int count)
+ {
+ if (block == null)
+ throw new Exception("The data buffer must not be null.");
+
+ // bzip algorithm
+ for (int i = 0; i < count; i++)
+ {
+ int x = offset + i;
+ byte b = block[x];
+ if (this.reverseBits)
+ {
+ UInt32 temp = (_register >> 24) ^ b;
+ _register = (_register << 8) ^ crc32Table[temp];
+ }
+ else
+ {
+ UInt32 temp = (_register & 0x000000FF) ^ b;
+ _register = (_register >> 8) ^ crc32Table[temp];
+ }
+ }
+ _TotalBytesRead += count;
+ }
+
+
+ /// <summary>
+ /// Process one byte in the CRC.
+ /// </summary>
+ /// <param name = "b">the byte to include into the CRC . </param>
+ public void UpdateCRC(byte b)
+ {
+ if (this.reverseBits)
+ {
+ UInt32 temp = (_register >> 24) ^ b;
+ _register = (_register << 8) ^ crc32Table[temp];
+ }
+ else
+ {
+ UInt32 temp = (_register & 0x000000FF) ^ b;
+ _register = (_register >> 8) ^ crc32Table[temp];
+ }
+ }
+
+ /// <summary>
+ /// Process a run of N identical bytes into the CRC.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// This method serves as an optimization for updating the CRC when a
+ /// run of identical bytes is found. Rather than passing in a buffer of
+ /// length n, containing all identical bytes b, this method accepts the
+ /// byte value and the length of the (virtual) buffer - the length of
+ /// the run.
+ /// </para>
+ /// </remarks>
+ /// <param name = "b">the byte to include into the CRC. </param>
+ /// <param name = "n">the number of times that byte should be repeated. </param>
+ public void UpdateCRC(byte b, int n)
+ {
+ while (n-- > 0)
+ {
+ if (this.reverseBits)
+ {
+ uint temp = (_register >> 24) ^ b;
+ _register = (_register << 8) ^ crc32Table[(temp >= 0)
+ ? temp
+ : (temp + 256)];
+ }
+ else
+ {
+ UInt32 temp = (_register & 0x000000FF) ^ b;
+ _register = (_register >> 8) ^ crc32Table[(temp >= 0)
+ ? temp
+ : (temp + 256)];
+
+ }
+ }
+ }
+
+
+
+ private static uint ReverseBits(uint data)
+ {
+ unchecked
+ {
+ uint ret = data;
+ ret = (ret & 0x55555555) << 1 | (ret >> 1) & 0x55555555;
+ ret = (ret & 0x33333333) << 2 | (ret >> 2) & 0x33333333;
+ ret = (ret & 0x0F0F0F0F) << 4 | (ret >> 4) & 0x0F0F0F0F;
+ ret = (ret << 24) | ((ret & 0xFF00) << 8) | ((ret >> 8) & 0xFF00) | (ret >> 24);
+ return ret;
+ }
+ }
+
+ private static byte ReverseBits(byte data)
+ {
+ unchecked
+ {
+ uint u = (uint)data * 0x00020202;
+ uint m = 0x01044010;
+ uint s = u & m;
+ uint t = (u << 2) & (m << 1);
+ return (byte)((0x01001001 * (s + t)) >> 24);
+ }
+ }
+
+
+
+ private void GenerateLookupTable()
+ {
+ crc32Table = new UInt32[256];
+ unchecked
+ {
+ UInt32 dwCrc;
+ byte i = 0;
+ do
+ {
+ dwCrc = i;
+ for (byte j = 8; j > 0; j--)
+ {
+ if ((dwCrc & 1) == 1)
+ {
+ dwCrc = (dwCrc >> 1) ^ dwPolynomial;
+ }
+ else
+ {
+ dwCrc >>= 1;
+ }
+ }
+ if (reverseBits)
+ {
+ crc32Table[ReverseBits(i)] = ReverseBits(dwCrc);
+ }
+ else
+ {
+ crc32Table[i] = dwCrc;
+ }
+ i++;
+ } while (i!=0);
+ }
+
+#if VERBOSE
+ Console.WriteLine();
+ Console.WriteLine("private static readonly UInt32[] crc32Table = {");
+ for (int i = 0; i < crc32Table.Length; i+=4)
+ {
+ Console.Write(" ");
+ for (int j=0; j < 4; j++)
+ {
+ Console.Write(" 0x{0:X8}U,", crc32Table[i+j]);
+ }
+ Console.WriteLine();
+ }
+ Console.WriteLine("};");
+ Console.WriteLine();
+#endif
+ }
+
+
+ private uint gf2_matrix_times(uint[] matrix, uint vec)
+ {
+ uint sum = 0;
+ int i=0;
+ while (vec != 0)
+ {
+ if ((vec & 0x01)== 0x01)
+ sum ^= matrix[i];
+ vec >>= 1;
+ i++;
+ }
+ return sum;
+ }
+
+ private void gf2_matrix_square(uint[] square, uint[] mat)
+ {
+ for (int i = 0; i < 32; i++)
+ square[i] = gf2_matrix_times(mat, mat[i]);
+ }
+
+
+
+ /// <summary>
+ /// Combines the given CRC32 value with the current running total.
+ /// </summary>
+ /// <remarks>
+ /// This is useful when using a divide-and-conquer approach to
+ /// calculating a CRC. Multiple threads can each calculate a
+ /// CRC32 on a segment of the data, and then combine the
+ /// individual CRC32 values at the end.
+ /// </remarks>
+ /// <param name="crc">the crc value to be combined with this one</param>
+ /// <param name="length">the length of data the CRC value was calculated on</param>
+ public void Combine(int crc, int length)
+ {
+ uint[] even = new uint[32]; // even-power-of-two zeros operator
+ uint[] odd = new uint[32]; // odd-power-of-two zeros operator
+
+ if (length == 0)
+ return;
+
+ uint crc1= ~_register;
+ uint crc2= (uint) crc;
+
+ // put operator for one zero bit in odd
+ odd[0] = this.dwPolynomial; // the CRC-32 polynomial
+ uint row = 1;
+ for (int i = 1; i < 32; i++)
+ {
+ odd[i] = row;
+ row <<= 1;
+ }
+
+ // put operator for two zero bits in even
+ gf2_matrix_square(even, odd);
+
+ // put operator for four zero bits in odd
+ gf2_matrix_square(odd, even);
+
+ uint len2 = (uint) length;
+
+ // apply len2 zeros to crc1 (first square will put the operator for one
+ // zero byte, eight zero bits, in even)
+ do {
+ // apply zeros operator for this bit of len2
+ gf2_matrix_square(even, odd);
+
+ if ((len2 & 1)== 1)
+ crc1 = gf2_matrix_times(even, crc1);
+ len2 >>= 1;
+
+ if (len2 == 0)
+ break;
+
+ // another iteration of the loop with odd and even swapped
+ gf2_matrix_square(odd, even);
+ if ((len2 & 1)==1)
+ crc1 = gf2_matrix_times(odd, crc1);
+ len2 >>= 1;
+
+
+ } while (len2 != 0);
+
+ crc1 ^= crc2;
+
+ _register= ~crc1;
+
+ //return (int) crc1;
+ return;
+ }
+
+
+ /// <summary>
+ /// Create an instance of the CRC32 class using the default settings: no
+ /// bit reversal, and a polynomial of 0xEDB88320.
+ /// </summary>
+ public CRC32() : this(false)
+ {
+ }
+
+ /// <summary>
+ /// Create an instance of the CRC32 class, specifying whether to reverse
+ /// data bits or not.
+ /// </summary>
+ /// <param name='reverseBits'>
+ /// specify true if the instance should reverse data bits.
+ /// </param>
+ /// <remarks>
+ /// <para>
+ /// In the CRC-32 used by BZip2, the bits are reversed. Therefore if you
+ /// want a CRC32 with compatibility with BZip2, you should pass true
+ /// here. In the CRC-32 used by GZIP and PKZIP, the bits are not
+ /// reversed; Therefore if you want a CRC32 with compatibility with
+ /// those, you should pass false.
+ /// </para>
+ /// </remarks>
+ public CRC32(bool reverseBits) :
+ this( unchecked((int)0xEDB88320), reverseBits)
+ {
+ }
+
+
+ /// <summary>
+ /// Create an instance of the CRC32 class, specifying the polynomial and
+ /// whether to reverse data bits or not.
+ /// </summary>
+ /// <param name='polynomial'>
+ /// The polynomial to use for the CRC, expressed in the reversed (LSB)
+ /// format: the highest ordered bit in the polynomial value is the
+ /// coefficient of the 0th power; the second-highest order bit is the
+ /// coefficient of the 1 power, and so on. Expressed this way, the
+ /// polynomial for the CRC-32C used in IEEE 802.3, is 0xEDB88320.
+ /// </param>
+ /// <param name='reverseBits'>
+ /// specify true if the instance should reverse data bits.
+ /// </param>
+ ///
+ /// <remarks>
+ /// <para>
+ /// In the CRC-32 used by BZip2, the bits are reversed. Therefore if you
+ /// want a CRC32 with compatibility with BZip2, you should pass true
+ /// here for the <c>reverseBits</c> parameter. In the CRC-32 used by
+ /// GZIP and PKZIP, the bits are not reversed; Therefore if you want a
+ /// CRC32 with compatibility with those, you should pass false for the
+ /// <c>reverseBits</c> parameter.
+ /// </para>
+ /// </remarks>
+ public CRC32(int polynomial, bool reverseBits)
+ {
+ this.reverseBits = reverseBits;
+ this.dwPolynomial = (uint) polynomial;
+ this.GenerateLookupTable();
+ }
+
+ /// <summary>
+ /// Reset the CRC-32 class - clear the CRC "remainder register."
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// Use this when employing a single instance of this class to compute
+ /// multiple, distinct CRCs on multiple, distinct data blocks.
+ /// </para>
+ /// </remarks>
+ public void Reset()
+ {
+ _register = 0xFFFFFFFFU;
+ }
+
+ // private member vars
+ private UInt32 dwPolynomial;
+ private Int64 _TotalBytesRead;
+ private bool reverseBits;
+ private UInt32[] crc32Table;
+ private const int BUFFER_SIZE = 8192;
+ private UInt32 _register = 0xFFFFFFFFU;
+ }
+
+
+ /// <summary>
+ /// A Stream that calculates a CRC32 (a checksum) on all bytes read,
+ /// or on all bytes written.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This class can be used to verify the CRC of a ZipEntry when
+ /// reading from a stream, or to calculate a CRC when writing to a
+ /// stream. The stream should be used to either read, or write, but
+ /// not both. If you intermix reads and writes, the results are not
+ /// defined.
+ /// </para>
+ ///
+ /// <para>
+ /// This class is intended primarily for use internally by the
+ /// DotNetZip library.
+ /// </para>
+ /// </remarks>
+ internal class CrcCalculatorStream : System.IO.Stream, System.IDisposable
+ {
+ private static readonly Int64 UnsetLengthLimit = -99;
+
+ internal System.IO.Stream _innerStream;
+ private CRC32 _Crc32;
+ private Int64 _lengthLimit = -99;
+ private bool _leaveOpen;
+
+ /// <summary>
+ /// The default constructor.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// Instances returned from this constructor will leave the underlying
+ /// stream open upon Close(). The stream uses the default CRC32
+ /// algorithm, which implies a polynomial of 0xEDB88320.
+ /// </para>
+ /// </remarks>
+ /// <param name="stream">The underlying stream</param>
+ public CrcCalculatorStream(System.IO.Stream stream)
+ : this(true, CrcCalculatorStream.UnsetLengthLimit, stream, null)
+ {
+ }
+
+ /// <summary>
+ /// The constructor allows the caller to specify how to handle the
+ /// underlying stream at close.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// The stream uses the default CRC32 algorithm, which implies a
+ /// polynomial of 0xEDB88320.
+ /// </para>
+ /// </remarks>
+ /// <param name="stream">The underlying stream</param>
+ /// <param name="leaveOpen">true to leave the underlying stream
+ /// open upon close of the <c>CrcCalculatorStream</c>; false otherwise.</param>
+ public CrcCalculatorStream(System.IO.Stream stream, bool leaveOpen)
+ : this(leaveOpen, CrcCalculatorStream.UnsetLengthLimit, stream, null)
+ {
+ }
+
+ /// <summary>
+ /// A constructor allowing the specification of the length of the stream
+ /// to read.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// The stream uses the default CRC32 algorithm, which implies a
+ /// polynomial of 0xEDB88320.
+ /// </para>
+ /// <para>
+ /// Instances returned from this constructor will leave the underlying
+ /// stream open upon Close().
+ /// </para>
+ /// </remarks>
+ /// <param name="stream">The underlying stream</param>
+ /// <param name="length">The length of the stream to slurp</param>
+ public CrcCalculatorStream(System.IO.Stream stream, Int64 length)
+ : this(true, length, stream, null)
+ {
+ if (length < 0)
+ throw new ArgumentException("length");
+ }
+
+ /// <summary>
+ /// A constructor allowing the specification of the length of the stream
+ /// to read, as well as whether to keep the underlying stream open upon
+ /// Close().
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// The stream uses the default CRC32 algorithm, which implies a
+ /// polynomial of 0xEDB88320.
+ /// </para>
+ /// </remarks>
+ /// <param name="stream">The underlying stream</param>
+ /// <param name="length">The length of the stream to slurp</param>
+ /// <param name="leaveOpen">true to leave the underlying stream
+ /// open upon close of the <c>CrcCalculatorStream</c>; false otherwise.</param>
+ public CrcCalculatorStream(System.IO.Stream stream, Int64 length, bool leaveOpen)
+ : this(leaveOpen, length, stream, null)
+ {
+ if (length < 0)
+ throw new ArgumentException("length");
+ }
+
+ /// <summary>
+ /// A constructor allowing the specification of the length of the stream
+ /// to read, as well as whether to keep the underlying stream open upon
+ /// Close(), and the CRC32 instance to use.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// The stream uses the specified CRC32 instance, which allows the
+ /// application to specify how the CRC gets calculated.
+ /// </para>
+ /// </remarks>
+ /// <param name="stream">The underlying stream</param>
+ /// <param name="length">The length of the stream to slurp</param>
+ /// <param name="leaveOpen">true to leave the underlying stream
+ /// open upon close of the <c>CrcCalculatorStream</c>; false otherwise.</param>
+ /// <param name="crc32">the CRC32 instance to use to calculate the CRC32</param>
+ public CrcCalculatorStream(System.IO.Stream stream, Int64 length, bool leaveOpen,
+ CRC32 crc32)
+ : this(leaveOpen, length, stream, crc32)
+ {
+ if (length < 0)
+ throw new ArgumentException("length");
+ }
+
+
+ // This ctor is private - no validation is done here. This is to allow the use
+ // of a (specific) negative value for the _lengthLimit, to indicate that there
+ // is no length set. So we validate the length limit in those ctors that use an
+ // explicit param, otherwise we don't validate, because it could be our special
+ // value.
+ private CrcCalculatorStream
+ (bool leaveOpen, Int64 length, System.IO.Stream stream, CRC32 crc32)
+ : base()
+ {
+ _innerStream = stream;
+ _Crc32 = crc32 ?? new CRC32();
+ _lengthLimit = length;
+ _leaveOpen = leaveOpen;
+ }
+
+
+ /// <summary>
+ /// Gets the total number of bytes run through the CRC32 calculator.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This is either the total number of bytes read, or the total number of
+ /// bytes written, depending on the direction of this stream.
+ /// </remarks>
+ public Int64 TotalBytesSlurped
+ {
+ get { return _Crc32.TotalBytesRead; }
+ }
+
+ /// <summary>
+ /// Provides the current CRC for all blocks slurped in.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// The running total of the CRC is kept as data is written or read
+ /// through the stream. read this property after all reads or writes to
+ /// get an accurate CRC for the entire stream.
+ /// </para>
+ /// </remarks>
+ public Int32 Crc
+ {
+ get { return _Crc32.Crc32Result; }
+ }
+
+ /// <summary>
+ /// Indicates whether the underlying stream will be left open when the
+ /// <c>CrcCalculatorStream</c> is Closed.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// Set this at any point before calling <see cref="Close()"/>.
+ /// </para>
+ /// </remarks>
+ public bool LeaveOpen
+ {
+ get { return _leaveOpen; }
+ set { _leaveOpen = value; }
+ }
+
+ /// <summary>
+ /// Read from the stream
+ /// </summary>
+ /// <param name="buffer">the buffer to read</param>
+ /// <param name="offset">the offset at which to start</param>
+ /// <param name="count">the number of bytes to read</param>
+ /// <returns>the number of bytes actually read</returns>
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ int bytesToRead = count;
+
+ // Need to limit the # of bytes returned, if the stream is intended to have
+ // a definite length. This is especially useful when returning a stream for
+ // the uncompressed data directly to the application. The app won't
+ // necessarily read only the UncompressedSize number of bytes. For example
+ // wrapping the stream returned from OpenReader() into a StreadReader() and
+ // calling ReadToEnd() on it, We can "over-read" the zip data and get a
+ // corrupt string. The length limits that, prevents that problem.
+
+ if (_lengthLimit != CrcCalculatorStream.UnsetLengthLimit)
+ {
+ if (_Crc32.TotalBytesRead >= _lengthLimit) return 0; // EOF
+ Int64 bytesRemaining = _lengthLimit - _Crc32.TotalBytesRead;
+ if (bytesRemaining < count) bytesToRead = (int)bytesRemaining;
+ }
+ int n = _innerStream.Read(buffer, offset, bytesToRead);
+ if (n > 0) _Crc32.SlurpBlock(buffer, offset, n);
+ return n;
+ }
+
+ /// <summary>
+ /// Write to the stream.
+ /// </summary>
+ /// <param name="buffer">the buffer from which to write</param>
+ /// <param name="offset">the offset at which to start writing</param>
+ /// <param name="count">the number of bytes to write</param>
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ if (count > 0) _Crc32.SlurpBlock(buffer, offset, count);
+ _innerStream.Write(buffer, offset, count);
+ }
+
+ /// <summary>
+ /// Indicates whether the stream supports reading.
+ /// </summary>
+ public override bool CanRead
+ {
+ get { return _innerStream.CanRead; }
+ }
+
+ /// <summary>
+ /// Indicates whether the stream supports seeking.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// Always returns false.
+ /// </para>
+ /// </remarks>
+ public override bool CanSeek
+ {
+ get { return false; }
+ }
+
+ /// <summary>
+ /// Indicates whether the stream supports writing.
+ /// </summary>
+ public override bool CanWrite
+ {
+ get { return _innerStream.CanWrite; }
+ }
+
+ /// <summary>
+ /// Flush the stream.
+ /// </summary>
+ public override void Flush()
+ {
+ _innerStream.Flush();
+ }
+
+ /// <summary>
+ /// Returns the length of the underlying stream.
+ /// </summary>
+ public override long Length
+ {
+ get
+ {
+ if (_lengthLimit == CrcCalculatorStream.UnsetLengthLimit)
+ return _innerStream.Length;
+ else return _lengthLimit;
+ }
+ }
+
+ /// <summary>
+ /// The getter for this property returns the total bytes read.
+ /// If you use the setter, it will throw
+ /// <see cref="NotSupportedException"/>.
+ /// </summary>
+ public override long Position
+ {
+ get { return _Crc32.TotalBytesRead; }
+ set { throw new NotSupportedException(); }
+ }
+
+ /// <summary>
+ /// Seeking is not supported on this stream. This method always throws
+ /// <see cref="NotSupportedException"/>
+ /// </summary>
+ /// <param name="offset">N/A</param>
+ /// <param name="origin">N/A</param>
+ /// <returns>N/A</returns>
+ public override long Seek(long offset, System.IO.SeekOrigin origin)
+ {
+ throw new NotSupportedException();
+ }
+
+ /// <summary>
+ /// This method always throws
+ /// <see cref="NotSupportedException"/>
+ /// </summary>
+ /// <param name="value">N/A</param>
+ public override void SetLength(long value)
+ {
+ throw new NotSupportedException();
+ }
+
+
+ void IDisposable.Dispose()
+ {
+ Close();
+ }
+
+ /// <summary>
+ /// Closes the stream.
+ /// </summary>
+ public override void Close()
+ {
+ base.Close();
+ if (!_leaveOpen)
+ _innerStream.Close();
+ }
+
+ }
+
+}
\ No newline at end of file
--- /dev/null
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Ionic.Encoding
+{
+ /// <summary>
+ /// Provides a text encoder for the iso-8859-1 encoding, aka Latin1 encoding,
+ /// for platforms that do not support it, for example on Silverlight or some
+ /// Compact Framework platforms.
+ /// </summary>
+ internal class Iso8859Dash1Encoding : System.Text.Encoding
+ {
+ /// <summary>
+ /// Gets the name registered with the
+ /// Internet Assigned Numbers Authority (IANA) for the current encoding.
+ /// </summary>
+ /// <returns>
+ /// Always returns "iso-8859-1".
+ /// </returns>
+ public override string WebName
+ {
+ get { return "iso-8859-1"; }
+ }
+
+ /// <summary>
+ /// Encodes a set of characters from a character array into
+ /// a byte array.
+ /// </summary>
+ /// <returns>
+ /// The actual number of bytes written into <paramref name="bytes"/>.
+ /// </returns>
+ /// <param name="chars">The character array containing the set of characters to encode.
+ /// </param><param name="start">The index of the first character to encode.
+ /// </param><param name="count">The number of characters to encode.
+ /// </param><param name="bytes">The byte array to contain the resulting sequence of bytes.
+ /// </param><param name="byteIndex">The index at which to start writing the resulting sequence of bytes.
+ /// </param>
+ public override int GetBytes(char[] chars, int start, int count, byte[] bytes, int byteIndex)
+ {
+ if (chars == null)
+ throw new ArgumentNullException("chars", "null array");
+
+ if (bytes == null)
+ throw new ArgumentNullException("bytes", "null array");
+
+ if (start < 0)
+ throw new ArgumentOutOfRangeException("start");
+ if (count < 0)
+ throw new ArgumentOutOfRangeException("charCount");
+
+ if ((chars.Length - start) < count)
+ throw new ArgumentOutOfRangeException("chars");
+
+ if ((byteIndex < 0) || (byteIndex > bytes.Length))
+ throw new ArgumentOutOfRangeException("byteIndex");
+
+ // iso-8859-1 is special in that it was adopted as the first page of
+ // UCS - ISO's Universal Coding Standard, described in ISO 10646,
+ // which is the same as Unicode. This means that a a Unicode
+ // character in the range of 0 to FF maps to the iso-8859-1 character
+ // with the same value. Because of that the encoding and decoding is
+ // trivial.
+ for (int i=0; i < count; i++)
+ {
+ char c = chars[start+i]; // get the unicode char
+
+ if (c >= '\x00FF') // out of range?
+ bytes[byteIndex+i] = (byte) '?';
+ else
+ bytes[byteIndex+i] = (byte) c;
+ }
+ return count;
+ }
+
+
+ /// <summary>
+ /// Decodes a sequence of bytes from the specified byte array into the specified character array.
+ /// </summary>
+ /// <returns>
+ /// The actual number of characters written into <paramref name="chars"/>.
+ /// </returns>
+ /// <param name="bytes">The byte array containing the sequence of bytes to decode.
+ /// </param><param name="start">The index of the first byte to decode.
+ /// </param><param name="count">The number of bytes to decode.
+ /// </param><param name="chars">The character array to contain the resulting set of characters.
+ /// </param><param name="charIndex">The index at which to start writing the resulting set of characters.
+ /// </param>
+ public override int GetChars(byte[] bytes, int start, int count, char[] chars, int charIndex)
+ {
+ if (chars == null)
+ throw new ArgumentNullException("chars", "null array");
+
+ if (bytes == null)
+ throw new ArgumentNullException("bytes", "null array");
+
+ if (start < 0)
+ throw new ArgumentOutOfRangeException("start");
+ if (count < 0)
+ throw new ArgumentOutOfRangeException("charCount");
+
+ if ((bytes.Length - start) < count)
+ throw new ArgumentOutOfRangeException("bytes");
+
+ if ((charIndex < 0) || (charIndex > chars.Length))
+ throw new ArgumentOutOfRangeException("charIndex");
+
+ // In the range 00 to FF, the Unicode characters are the same as the
+ // iso-8859-1 characters; because of that, decoding is trivial.
+ for (int i = 0; i < count; i++)
+ chars[charIndex + i] = (char) bytes[i + start];
+
+ return count;
+ }
+
+
+ /// <summary>
+ /// Calculates the number of bytes produced by encoding a set of characters
+ /// from the specified character array.
+ /// </summary>
+ /// <returns>
+ /// The number of bytes produced by encoding the specified characters. This class
+ /// alwas returns the value of <paramref name="count"/>.
+ /// </returns>
+ public override int GetByteCount(char[] chars, int index, int count)
+ {
+ return count;
+ }
+
+
+ /// <summary>
+ /// Calculates the number of characters produced by decoding a sequence
+ /// of bytes from the specified byte array.
+ /// </summary>
+ /// <returns>
+ /// The number of characters produced by decoding the specified sequence of bytes. This class
+ /// alwas returns the value of <paramref name="count"/>.
+ /// </returns>
+ public override int GetCharCount(byte[] bytes, int index, int count)
+ {
+ return count;
+ }
+
+
+ /// <summary>
+ /// Calculates the maximum number of bytes produced by encoding the specified number of characters.
+ /// </summary>
+ /// <returns>
+ /// The maximum number of bytes produced by encoding the specified number of characters. This
+ /// class alwas returns the value of <paramref name="charCount"/>.
+ /// </returns>
+ /// <param name="charCount">The number of characters to encode.
+ /// </param>
+ public override int GetMaxByteCount(int charCount)
+ {
+ return charCount;
+ }
+
+ /// <summary>
+ /// Calculates the maximum number of characters produced by decoding the specified number of bytes.
+ /// </summary>
+ /// <returns>
+ /// The maximum number of characters produced by decoding the specified number of bytes. This class
+ /// alwas returns the value of <paramref name="byteCount"/>.
+ /// </returns>
+ /// <param name="byteCount">The number of bytes to decode.</param>
+ public override int GetMaxCharCount(int byteCount)
+ {
+ return byteCount;
+ }
+
+ /// <summary>
+ /// Gets the number of characters that are supported by this encoding.
+ /// This property returns a maximum value of 256, as the encoding class
+ /// only supports single byte encodings (1 byte == 256 possible values).
+ /// </summary>
+ internal static int CharacterCount
+ {
+ get { return 256; }
+ }
+
+ }
+}
--- /dev/null
+Microsoft Public License (Ms-PL)
+
+This license governs use of the accompanying software, the DotNetZip library ("the software"). If you use the software, you accept this license. If you do not accept the license, do not use the software.
+
+1. Definitions
+
+The terms "reproduce," "reproduction," "derivative works," and "distribution" have the same meaning here as under U.S. copyright law.
+
+A "contribution" is the original software, or any additions or changes to the software.
+
+A "contributor" is any person that distributes its contribution under this license.
+
+"Licensed patents" are a contributor's patent claims that read directly on its contribution.
+
+2. Grant of Rights
+
+(A) Copyright Grant- Subject to the terms of this license, including the license conditions and limitations in section 3, each contributor grants you a non-exclusive, worldwide, royalty-free copyright license to reproduce its contribution, prepare derivative works of its contribution, and distribute its contribution or any derivative works that you create.
+
+(B) Patent Grant- Subject to the terms of this license, including the license conditions and limitations in section 3, each contributor grants you a non-exclusive, worldwide, royalty-free license under its licensed patents to make, have made, use, sell, offer for sale, import, and/or otherwise dispose of its contribution in the software or derivative works of the contribution in the software.
+
+3. Conditions and Limitations
+
+(A) No Trademark License- This license does not grant you rights to use any contributors' name, logo, or trademarks.
+
+(B) If you bring a patent claim against any contributor over patents that you claim are infringed by the software, your patent license from such contributor to the software ends automatically.
+
+(C) If you distribute any portion of the software, you must retain all copyright, patent, trademark, and attribution notices that are present in the software.
+
+(D) If you distribute any portion of the software in source code form, you may do so only under this license by including a complete copy of this license with your distribution. If you distribute any portion of the software in compiled or object code form, you may only do so under a license that complies with this license.
+
+(E) The software is licensed "as-is." You bear the risk of using it. The contributors give no express warranties, guarantees or conditions. You may have additional consumer rights under your local laws which this license cannot change. To the extent permitted under your local laws, the contributors exclude the implied warranties of merchantability, fitness for a particular purpose and non-infringement.
+
+
--- /dev/null
+
+The following licenses govern use of the accompanying software, the
+DotNetZip library ("the software"). If you use the software, you accept
+these licenses. If you do not accept the license, do not use the software.
+
+The managed ZLIB code included in Ionic.Zlib.dll and Ionic.Zip.dll is
+modified code, based on jzlib.
+
+
+
+The following notice applies to jzlib:
+-----------------------------------------------------------------------
+
+Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in
+the documentation and/or other materials provided with the distribution.
+
+3. The names of the authors may not be used to endorse or promote products
+derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
+INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+-----------------------------------------------------------------------
+
+jzlib is based on zlib-1.1.3.
+
+The following notice applies to zlib:
+
+-----------------------------------------------------------------------
+
+Copyright (C) 1995-2004 Jean-loup Gailly and Mark Adler
+
+ The ZLIB software is provided 'as-is', without any express or implied
+ warranty. In no event will the authors be held liable for any damages
+ arising from the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ claim that you wrote the original software. If you use this software
+ in a product, an acknowledgment in the product documentation would be
+ appreciated but is not required.
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+
+ Jean-loup Gailly jloup@gzip.org
+ Mark Adler madler@alumni.caltech.edu
+
+
+-----------------------------------------------------------------------
--- /dev/null
+This is a subset of the Ionic.Zip library.
+
+The modifications to the original are:
+ * Changed the visibility of all public types to internal
+ * Added two methods to ZipFile.cs (sorrounded with #region Xamarin so they're easy to find)
\ No newline at end of file
--- /dev/null
+// EncryptionAlgorithm.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2009-October-21 17:24:45>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the EncryptionAgorithm enum
+//
+//
+// ------------------------------------------------------------------
+
+
+namespace Ionic.Zip
+{
+ /// <summary>
+ /// An enum that provides the various encryption algorithms supported by this
+ /// library.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// <c>PkzipWeak</c> implies the use of Zip 2.0 encryption, which is known to be
+ /// weak and subvertible.
+ /// </para>
+ ///
+ /// <para>
+ /// A note on interoperability: Values of <c>PkzipWeak</c> and <c>None</c> are
+ /// specified in <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">PKWARE's zip
+ /// specification</see>, and are considered to be "standard". Zip archives
+ /// produced using these options will be interoperable with many other zip tools
+ /// and libraries, including Windows Explorer.
+ /// </para>
+ ///
+ /// <para>
+ /// Values of <c>WinZipAes128</c> and <c>WinZipAes256</c> are not part of the Zip
+ /// specification, but rather imply the use of a vendor-specific extension from
+ /// WinZip. If you want to produce interoperable Zip archives, do not use these
+ /// values. For example, if you produce a zip archive using WinZipAes256, you
+ /// will be able to open it in Windows Explorer on Windows XP and Vista, but you
+ /// will not be able to extract entries; trying this will lead to an "unspecified
+ /// error". For this reason, some people have said that a zip archive that uses
+ /// WinZip's AES encryption is not actually a zip archive at all. A zip archive
+ /// produced this way will be readable with the WinZip tool (Version 11 and
+ /// beyond).
+ /// </para>
+ ///
+ /// <para>
+ /// There are other third-party tools and libraries, both commercial and
+ /// otherwise, that support WinZip's AES encryption. These will be able to read
+ /// AES-encrypted zip archives produced by DotNetZip, and conversely applications
+ /// that use DotNetZip to read zip archives will be able to read AES-encrypted
+ /// archives produced by those tools or libraries. Consult the documentation for
+ /// those other tools and libraries to find out if WinZip's AES encryption is
+ /// supported.
+ /// </para>
+ ///
+ /// <para>
+ /// In case you care: According to <see
+ /// href="http://www.winzip.com/aes_info.htm">the WinZip specification</see>, the
+ /// actual AES key used is derived from the <see cref="ZipEntry.Password"/> via an
+ /// algorithm that complies with <see
+ /// href="http://www.ietf.org/rfc/rfc2898.txt">RFC 2898</see>, using an iteration
+ /// count of 1000. The algorithm is sometimes referred to as PBKDF2, which stands
+ /// for "Password Based Key Derivation Function #2".
+ /// </para>
+ ///
+ /// <para>
+ /// A word about password strength and length: The AES encryption technology is
+ /// very good, but any system is only as secure as the weakest link. If you want
+ /// to secure your data, be sure to use a password that is hard to guess. To make
+ /// it harder to guess (increase its "entropy"), you should make it longer. If
+ /// you use normal characters from an ASCII keyboard, a password of length 20 will
+ /// be strong enough that it will be impossible to guess. For more information on
+ /// that, I'd encourage you to read <see
+ /// href="http://www.redkestrel.co.uk/Articles/RandomPasswordStrength.html">this
+ /// article.</see>
+ /// </para>
+ ///
+ /// <para>
+ /// The WinZip AES algorithms are not supported with the version of DotNetZip that
+ /// runs on the .NET Compact Framework. This is because .NET CF lacks the
+ /// HMACSHA1 class that is required for producing the archive.
+ /// </para>
+ /// </remarks>
+ internal enum EncryptionAlgorithm
+ {
+ /// <summary>
+ /// No encryption at all.
+ /// </summary>
+ None = 0,
+
+ /// <summary>
+ /// Traditional or Classic pkzip encryption.
+ /// </summary>
+ PkzipWeak,
+
+#if AESCRYPTO
+ /// <summary>
+ /// WinZip AES encryption (128 key bits).
+ /// </summary>
+ WinZipAes128,
+
+ /// <summary>
+ /// WinZip AES encryption (256 key bits).
+ /// </summary>
+ WinZipAes256,
+#endif
+
+ /// <summary>
+ /// An encryption algorithm that is not supported by DotNetZip.
+ /// </summary>
+ Unsupported = 4,
+
+
+ // others... not implemented (yet?)
+ }
+
+}
--- /dev/null
+// Events.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2006, 2007, 2008, 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-August-06 12:26:24>
+//
+// ------------------------------------------------------------------
+//
+// This module defines events used by the ZipFile class.
+//
+//
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Ionic.Zip
+{
+ /// <summary>
+ /// Delegate in which the application writes the <c>ZipEntry</c> content for the named entry.
+ /// </summary>
+ ///
+ /// <param name="entryName">The name of the entry that must be written.</param>
+ /// <param name="stream">The stream to which the entry data should be written.</param>
+ ///
+ /// <remarks>
+ /// When you add an entry and specify a <c>WriteDelegate</c>, via <see
+ /// cref="Ionic.Zip.ZipFile.AddEntry(string, WriteDelegate)"/>, the application
+ /// code provides the logic that writes the entry data directly into the zip file.
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to define a WriteDelegate that obtains a DataSet, and then
+ /// writes the XML for the DataSet into the zip archive. There's no need to
+ /// save the XML to a disk file first.
+ ///
+ /// <code lang="C#">
+ /// private void WriteEntry (String filename, Stream output)
+ /// {
+ /// DataSet ds1 = ObtainDataSet();
+ /// ds1.WriteXml(output);
+ /// }
+ ///
+ /// private void Run()
+ /// {
+ /// using (var zip = new ZipFile())
+ /// {
+ /// zip.AddEntry(zipEntryName, WriteEntry);
+ /// zip.Save(zipFileName);
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="vb">
+ /// Private Sub WriteEntry (ByVal filename As String, ByVal output As Stream)
+ /// DataSet ds1 = ObtainDataSet()
+ /// ds1.WriteXml(stream)
+ /// End Sub
+ ///
+ /// Public Sub Run()
+ /// Using zip = New ZipFile
+ /// zip.AddEntry(zipEntryName, New WriteDelegate(AddressOf WriteEntry))
+ /// zip.Save(zipFileName)
+ /// End Using
+ /// End Sub
+ /// </code>
+ /// </example>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddEntry(string, WriteDelegate)"/>
+ internal delegate void WriteDelegate(string entryName, System.IO.Stream stream);
+
+
+ /// <summary>
+ /// Delegate in which the application opens the stream, just-in-time, for the named entry.
+ /// </summary>
+ ///
+ /// <param name="entryName">
+ /// The name of the ZipEntry that the application should open the stream for.
+ /// </param>
+ ///
+ /// <remarks>
+ /// When you add an entry via <see cref="Ionic.Zip.ZipFile.AddEntry(string,
+ /// OpenDelegate, CloseDelegate)"/>, the application code provides the logic that
+ /// opens and closes the stream for the given ZipEntry.
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddEntry(string, OpenDelegate, CloseDelegate)"/>
+ internal delegate System.IO.Stream OpenDelegate(string entryName);
+
+ /// <summary>
+ /// Delegate in which the application closes the stream, just-in-time, for the named entry.
+ /// </summary>
+ ///
+ /// <param name="entryName">
+ /// The name of the ZipEntry that the application should close the stream for.
+ /// </param>
+ ///
+ /// <param name="stream">The stream to be closed.</param>
+ ///
+ /// <remarks>
+ /// When you add an entry via <see cref="Ionic.Zip.ZipFile.AddEntry(string,
+ /// OpenDelegate, CloseDelegate)"/>, the application code provides the logic that
+ /// opens and closes the stream for the given ZipEntry.
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddEntry(string, OpenDelegate, CloseDelegate)"/>
+ internal delegate void CloseDelegate(string entryName, System.IO.Stream stream);
+
+ /// <summary>
+ /// Delegate for the callback by which the application tells the
+ /// library the CompressionLevel to use for a file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Using this callback, the application can, for example, specify that
+ /// previously-compressed files (.mp3, .png, .docx, etc) should use a
+ /// <c>CompressionLevel</c> of <c>None</c>, or can set the compression level based
+ /// on any other factor.
+ /// </para>
+ /// </remarks>
+ /// <seealso cref="Ionic.Zip.ZipFile.SetCompression"/>
+ internal delegate Ionic.Zlib.CompressionLevel SetCompressionCallback(string localFileName, string fileNameInArchive);
+
+ /// <summary>
+ /// In an EventArgs type, indicates which sort of progress event is being
+ /// reported.
+ /// </summary>
+ /// <remarks>
+ /// There are events for reading, events for saving, and events for
+ /// extracting. This enumeration allows a single EventArgs type to be sued to
+ /// describe one of multiple subevents. For example, a SaveProgress event is
+ /// invoked before, after, and during the saving of a single entry. The value
+ /// of an enum with this type, specifies which event is being triggered. The
+ /// same applies to Extraction, Reading and Adding events.
+ /// </remarks>
+ internal enum ZipProgressEventType
+ {
+ /// <summary>
+ /// Indicates that a Add() operation has started.
+ /// </summary>
+ Adding_Started,
+
+ /// <summary>
+ /// Indicates that an individual entry in the archive has been added.
+ /// </summary>
+ Adding_AfterAddEntry,
+
+ /// <summary>
+ /// Indicates that a Add() operation has completed.
+ /// </summary>
+ Adding_Completed,
+
+ /// <summary>
+ /// Indicates that a Read() operation has started.
+ /// </summary>
+ Reading_Started,
+
+ /// <summary>
+ /// Indicates that an individual entry in the archive is about to be read.
+ /// </summary>
+ Reading_BeforeReadEntry,
+
+ /// <summary>
+ /// Indicates that an individual entry in the archive has just been read.
+ /// </summary>
+ Reading_AfterReadEntry,
+
+ /// <summary>
+ /// Indicates that a Read() operation has completed.
+ /// </summary>
+ Reading_Completed,
+
+ /// <summary>
+ /// The given event reports the number of bytes read so far
+ /// during a Read() operation.
+ /// </summary>
+ Reading_ArchiveBytesRead,
+
+ /// <summary>
+ /// Indicates that a Save() operation has started.
+ /// </summary>
+ Saving_Started,
+
+ /// <summary>
+ /// Indicates that an individual entry in the archive is about to be written.
+ /// </summary>
+ Saving_BeforeWriteEntry,
+
+ /// <summary>
+ /// Indicates that an individual entry in the archive has just been saved.
+ /// </summary>
+ Saving_AfterWriteEntry,
+
+ /// <summary>
+ /// Indicates that a Save() operation has completed.
+ /// </summary>
+ Saving_Completed,
+
+ /// <summary>
+ /// Indicates that the zip archive has been created in a
+ /// temporary location during a Save() operation.
+ /// </summary>
+ Saving_AfterSaveTempArchive,
+
+ /// <summary>
+ /// Indicates that the temporary file is about to be renamed to the final archive
+ /// name during a Save() operation.
+ /// </summary>
+ Saving_BeforeRenameTempArchive,
+
+ /// <summary>
+ /// Indicates that the temporary file is has just been renamed to the final archive
+ /// name during a Save() operation.
+ /// </summary>
+ Saving_AfterRenameTempArchive,
+
+ /// <summary>
+ /// Indicates that the self-extracting archive has been compiled
+ /// during a Save() operation.
+ /// </summary>
+ Saving_AfterCompileSelfExtractor,
+
+ /// <summary>
+ /// The given event is reporting the number of source bytes that have run through the compressor so far
+ /// during a Save() operation.
+ /// </summary>
+ Saving_EntryBytesRead,
+
+ /// <summary>
+ /// Indicates that an entry is about to be extracted.
+ /// </summary>
+ Extracting_BeforeExtractEntry,
+
+ /// <summary>
+ /// Indicates that an entry has just been extracted.
+ /// </summary>
+ Extracting_AfterExtractEntry,
+
+ /// <summary>
+ /// Indicates that extraction of an entry would overwrite an existing
+ /// filesystem file. You must use
+ /// <see cref="ExtractExistingFileAction.InvokeExtractProgressEvent">
+ /// ExtractExistingFileAction.InvokeExtractProgressEvent</see> in the call
+ /// to <c>ZipEntry.Extract()</c> in order to receive this event.
+ /// </summary>
+ Extracting_ExtractEntryWouldOverwrite,
+
+ /// <summary>
+ /// The given event is reporting the number of bytes written so far for
+ /// the current entry during an Extract() operation.
+ /// </summary>
+ Extracting_EntryBytesWritten,
+
+ /// <summary>
+ /// Indicates that an ExtractAll operation is about to begin.
+ /// </summary>
+ Extracting_BeforeExtractAll,
+
+ /// <summary>
+ /// Indicates that an ExtractAll operation has completed.
+ /// </summary>
+ Extracting_AfterExtractAll,
+
+ /// <summary>
+ /// Indicates that an error has occurred while saving a zip file.
+ /// This generally means the file cannot be opened, because it has been
+ /// removed, or because it is locked by another process. It can also
+ /// mean that the file cannot be Read, because of a range lock conflict.
+ /// </summary>
+ Error_Saving,
+ }
+
+
+ /// <summary>
+ /// Provides information about the progress of a save, read, or extract operation.
+ /// This is a base class; you will probably use one of the classes derived from this one.
+ /// </summary>
+ internal class ZipProgressEventArgs : EventArgs
+ {
+ private int _entriesTotal;
+ private bool _cancel;
+ private ZipEntry _latestEntry;
+ private ZipProgressEventType _flavor;
+ private String _archiveName;
+ private Int64 _bytesTransferred;
+ private Int64 _totalBytesToTransfer;
+
+
+ internal ZipProgressEventArgs() { }
+
+ internal ZipProgressEventArgs(string archiveName, ZipProgressEventType flavor)
+ {
+ this._archiveName = archiveName;
+ this._flavor = flavor;
+ }
+
+ /// <summary>
+ /// The total number of entries to be saved or extracted.
+ /// </summary>
+ public int EntriesTotal
+ {
+ get { return _entriesTotal; }
+ set { _entriesTotal = value; }
+ }
+
+ /// <summary>
+ /// The name of the last entry saved or extracted.
+ /// </summary>
+ public ZipEntry CurrentEntry
+ {
+ get { return _latestEntry; }
+ set { _latestEntry = value; }
+ }
+
+ /// <summary>
+ /// In an event handler, set this to cancel the save or extract
+ /// operation that is in progress.
+ /// </summary>
+ public bool Cancel
+ {
+ get { return _cancel; }
+ set { _cancel = _cancel || value; }
+ }
+
+ /// <summary>
+ /// The type of event being reported.
+ /// </summary>
+ public ZipProgressEventType EventType
+ {
+ get { return _flavor; }
+ set { _flavor = value; }
+ }
+
+ /// <summary>
+ /// Returns the archive name associated to this event.
+ /// </summary>
+ public String ArchiveName
+ {
+ get { return _archiveName; }
+ set { _archiveName = value; }
+ }
+
+
+ /// <summary>
+ /// The number of bytes read or written so far for this entry.
+ /// </summary>
+ public Int64 BytesTransferred
+ {
+ get { return _bytesTransferred; }
+ set { _bytesTransferred = value; }
+ }
+
+
+
+ /// <summary>
+ /// Total number of bytes that will be read or written for this entry.
+ /// This number will be -1 if the value cannot be determined.
+ /// </summary>
+ public Int64 TotalBytesToTransfer
+ {
+ get { return _totalBytesToTransfer; }
+ set { _totalBytesToTransfer = value; }
+ }
+ }
+
+
+
+ /// <summary>
+ /// Provides information about the progress of a Read operation.
+ /// </summary>
+ internal class ReadProgressEventArgs : ZipProgressEventArgs
+ {
+
+ internal ReadProgressEventArgs() { }
+
+ private ReadProgressEventArgs(string archiveName, ZipProgressEventType flavor)
+ : base(archiveName, flavor)
+ { }
+
+ internal static ReadProgressEventArgs Before(string archiveName, int entriesTotal)
+ {
+ var x = new ReadProgressEventArgs(archiveName, ZipProgressEventType.Reading_BeforeReadEntry);
+ x.EntriesTotal = entriesTotal;
+ return x;
+ }
+
+ internal static ReadProgressEventArgs After(string archiveName, ZipEntry entry, int entriesTotal)
+ {
+ var x = new ReadProgressEventArgs(archiveName, ZipProgressEventType.Reading_AfterReadEntry);
+ x.EntriesTotal = entriesTotal;
+ x.CurrentEntry = entry;
+ return x;
+ }
+
+ internal static ReadProgressEventArgs Started(string archiveName)
+ {
+ var x = new ReadProgressEventArgs(archiveName, ZipProgressEventType.Reading_Started);
+ return x;
+ }
+
+ internal static ReadProgressEventArgs ByteUpdate(string archiveName, ZipEntry entry, Int64 bytesXferred, Int64 totalBytes)
+ {
+ var x = new ReadProgressEventArgs(archiveName, ZipProgressEventType.Reading_ArchiveBytesRead);
+ x.CurrentEntry = entry;
+ x.BytesTransferred = bytesXferred;
+ x.TotalBytesToTransfer = totalBytes;
+ return x;
+ }
+
+ internal static ReadProgressEventArgs Completed(string archiveName)
+ {
+ var x = new ReadProgressEventArgs(archiveName, ZipProgressEventType.Reading_Completed);
+ return x;
+ }
+
+ }
+
+
+ /// <summary>
+ /// Provides information about the progress of a Add operation.
+ /// </summary>
+ internal class AddProgressEventArgs : ZipProgressEventArgs
+ {
+ internal AddProgressEventArgs() { }
+
+ private AddProgressEventArgs(string archiveName, ZipProgressEventType flavor)
+ : base(archiveName, flavor)
+ { }
+
+ internal static AddProgressEventArgs AfterEntry(string archiveName, ZipEntry entry, int entriesTotal)
+ {
+ var x = new AddProgressEventArgs(archiveName, ZipProgressEventType.Adding_AfterAddEntry);
+ x.EntriesTotal = entriesTotal;
+ x.CurrentEntry = entry;
+ return x;
+ }
+
+ internal static AddProgressEventArgs Started(string archiveName)
+ {
+ var x = new AddProgressEventArgs(archiveName, ZipProgressEventType.Adding_Started);
+ return x;
+ }
+
+ internal static AddProgressEventArgs Completed(string archiveName)
+ {
+ var x = new AddProgressEventArgs(archiveName, ZipProgressEventType.Adding_Completed);
+ return x;
+ }
+
+ }
+
+ /// <summary>
+ /// Provides information about the progress of a save operation.
+ /// </summary>
+ internal class SaveProgressEventArgs : ZipProgressEventArgs
+ {
+ private int _entriesSaved;
+
+ /// <summary>
+ /// Constructor for the SaveProgressEventArgs.
+ /// </summary>
+ /// <param name="archiveName">the name of the zip archive.</param>
+ /// <param name="before">whether this is before saving the entry, or after</param>
+ /// <param name="entriesTotal">The total number of entries in the zip archive.</param>
+ /// <param name="entriesSaved">Number of entries that have been saved.</param>
+ /// <param name="entry">The entry involved in the event.</param>
+ internal SaveProgressEventArgs(string archiveName, bool before, int entriesTotal, int entriesSaved, ZipEntry entry)
+ : base(archiveName, (before) ? ZipProgressEventType.Saving_BeforeWriteEntry : ZipProgressEventType.Saving_AfterWriteEntry)
+ {
+ this.EntriesTotal = entriesTotal;
+ this.CurrentEntry = entry;
+ this._entriesSaved = entriesSaved;
+ }
+
+ internal SaveProgressEventArgs() { }
+
+ internal SaveProgressEventArgs(string archiveName, ZipProgressEventType flavor)
+ : base(archiveName, flavor)
+ { }
+
+
+ internal static SaveProgressEventArgs ByteUpdate(string archiveName, ZipEntry entry, Int64 bytesXferred, Int64 totalBytes)
+ {
+ var x = new SaveProgressEventArgs(archiveName, ZipProgressEventType.Saving_EntryBytesRead);
+ x.ArchiveName = archiveName;
+ x.CurrentEntry = entry;
+ x.BytesTransferred = bytesXferred;
+ x.TotalBytesToTransfer = totalBytes;
+ return x;
+ }
+
+ internal static SaveProgressEventArgs Started(string archiveName)
+ {
+ var x = new SaveProgressEventArgs(archiveName, ZipProgressEventType.Saving_Started);
+ return x;
+ }
+
+ internal static SaveProgressEventArgs Completed(string archiveName)
+ {
+ var x = new SaveProgressEventArgs(archiveName, ZipProgressEventType.Saving_Completed);
+ return x;
+ }
+
+ /// <summary>
+ /// Number of entries saved so far.
+ /// </summary>
+ public int EntriesSaved
+ {
+ get { return _entriesSaved; }
+ }
+ }
+
+
+ /// <summary>
+ /// Provides information about the progress of the extract operation.
+ /// </summary>
+ internal class ExtractProgressEventArgs : ZipProgressEventArgs
+ {
+ private int _entriesExtracted;
+ private string _target;
+
+ /// <summary>
+ /// Constructor for the ExtractProgressEventArgs.
+ /// </summary>
+ /// <param name="archiveName">the name of the zip archive.</param>
+ /// <param name="before">whether this is before saving the entry, or after</param>
+ /// <param name="entriesTotal">The total number of entries in the zip archive.</param>
+ /// <param name="entriesExtracted">Number of entries that have been extracted.</param>
+ /// <param name="entry">The entry involved in the event.</param>
+ /// <param name="extractLocation">The location to which entries are extracted.</param>
+ internal ExtractProgressEventArgs(string archiveName, bool before, int entriesTotal, int entriesExtracted, ZipEntry entry, string extractLocation)
+ : base(archiveName, (before) ? ZipProgressEventType.Extracting_BeforeExtractEntry : ZipProgressEventType.Extracting_AfterExtractEntry)
+ {
+ this.EntriesTotal = entriesTotal;
+ this.CurrentEntry = entry;
+ this._entriesExtracted = entriesExtracted;
+ this._target = extractLocation;
+ }
+
+ internal ExtractProgressEventArgs(string archiveName, ZipProgressEventType flavor)
+ : base(archiveName, flavor)
+ { }
+
+ internal ExtractProgressEventArgs()
+ { }
+
+
+ internal static ExtractProgressEventArgs BeforeExtractEntry(string archiveName, ZipEntry entry, string extractLocation)
+ {
+ var x = new ExtractProgressEventArgs
+ {
+ ArchiveName = archiveName,
+ EventType = ZipProgressEventType.Extracting_BeforeExtractEntry,
+ CurrentEntry = entry,
+ _target = extractLocation,
+ };
+ return x;
+ }
+
+ internal static ExtractProgressEventArgs ExtractExisting(string archiveName, ZipEntry entry, string extractLocation)
+ {
+ var x = new ExtractProgressEventArgs
+ {
+ ArchiveName = archiveName,
+ EventType = ZipProgressEventType.Extracting_ExtractEntryWouldOverwrite,
+ CurrentEntry = entry,
+ _target = extractLocation,
+ };
+ return x;
+ }
+
+ internal static ExtractProgressEventArgs AfterExtractEntry(string archiveName, ZipEntry entry, string extractLocation)
+ {
+ var x = new ExtractProgressEventArgs
+ {
+ ArchiveName = archiveName,
+ EventType = ZipProgressEventType.Extracting_AfterExtractEntry,
+ CurrentEntry = entry,
+ _target = extractLocation,
+ };
+ return x;
+ }
+
+ internal static ExtractProgressEventArgs ExtractAllStarted(string archiveName, string extractLocation)
+ {
+ var x = new ExtractProgressEventArgs(archiveName, ZipProgressEventType.Extracting_BeforeExtractAll);
+ x._target = extractLocation;
+ return x;
+ }
+
+ internal static ExtractProgressEventArgs ExtractAllCompleted(string archiveName, string extractLocation)
+ {
+ var x = new ExtractProgressEventArgs(archiveName, ZipProgressEventType.Extracting_AfterExtractAll);
+ x._target = extractLocation;
+ return x;
+ }
+
+
+ internal static ExtractProgressEventArgs ByteUpdate(string archiveName, ZipEntry entry, Int64 bytesWritten, Int64 totalBytes)
+ {
+ var x = new ExtractProgressEventArgs(archiveName, ZipProgressEventType.Extracting_EntryBytesWritten);
+ x.ArchiveName = archiveName;
+ x.CurrentEntry = entry;
+ x.BytesTransferred = bytesWritten;
+ x.TotalBytesToTransfer = totalBytes;
+ return x;
+ }
+
+
+
+ /// <summary>
+ /// Number of entries extracted so far. This is set only if the
+ /// EventType is Extracting_BeforeExtractEntry or Extracting_AfterExtractEntry, and
+ /// the Extract() is occurring witin the scope of a call to ExtractAll().
+ /// </summary>
+ public int EntriesExtracted
+ {
+ get { return _entriesExtracted; }
+ }
+
+ /// <summary>
+ /// Returns the extraction target location, a filesystem path.
+ /// </summary>
+ public String ExtractLocation
+ {
+ get { return _target; }
+ }
+
+ }
+
+
+
+ /// <summary>
+ /// Provides information about the an error that occurred while zipping.
+ /// </summary>
+ internal class ZipErrorEventArgs : ZipProgressEventArgs
+ {
+ private Exception _exc;
+ private ZipErrorEventArgs() { }
+ internal static ZipErrorEventArgs Saving(string archiveName, ZipEntry entry, Exception exception)
+ {
+ var x = new ZipErrorEventArgs
+ {
+ EventType = ZipProgressEventType.Error_Saving,
+ ArchiveName = archiveName,
+ CurrentEntry = entry,
+ _exc = exception
+ };
+ return x;
+ }
+
+ /// <summary>
+ /// Returns the exception that occurred, if any.
+ /// </summary>
+ public Exception @Exception
+ {
+ get { return _exc; }
+ }
+
+ /// <summary>
+ /// Returns the name of the file that caused the exception, if any.
+ /// </summary>
+ public String FileName
+ {
+ get { return CurrentEntry.LocalFileName; }
+ }
+ }
+
+
+}
--- /dev/null
+// Exceptions.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2008, 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-July-12 12:19:10>
+//
+// ------------------------------------------------------------------
+//
+// This module defines exceptions used in the class library.
+//
+
+
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+#if !NETCF
+using System.Runtime.Serialization;
+#endif
+
+namespace Ionic.Zip
+{
+ ///// <summary>
+ ///// Base exception type for all custom exceptions in the Zip library. It acts as a marker class.
+ ///// </summary>
+ //[AttributeUsage(AttributeTargets.Class)]
+ //internal class ZipExceptionAttribute : Attribute { }
+
+
+
+ /// <summary>
+ /// Issued when an <c>ZipEntry.ExtractWithPassword()</c> method is invoked
+ /// with an incorrect password.
+ /// </summary>
+#if !SILVERLIGHT
+ [Serializable]
+#endif
+ [System.Runtime.InteropServices.GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d0000B")]
+ internal class BadPasswordException : ZipException
+ {
+ /// <summary>
+ /// Default ctor.
+ /// </summary>
+ public BadPasswordException() { }
+
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="message">The message in the exception.</param>
+ public BadPasswordException(String message)
+ : base(message)
+ { }
+
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="message">The message in the exception.</param>
+ /// <param name="innerException">The innerException for this exception.</param>
+ public BadPasswordException(String message, Exception innerException)
+ : base(message, innerException)
+ {
+ }
+
+
+#if ! (NETCF || SILVERLIGHT)
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="info">The serialization info for the exception.</param>
+ /// <param name="context">The streaming context from which to deserialize.</param>
+ protected BadPasswordException(SerializationInfo info, StreamingContext context)
+ : base(info, context)
+ { }
+#endif
+
+ }
+
+ /// <summary>
+ /// Indicates that a read was attempted on a stream, and bad or incomplete data was
+ /// received.
+ /// </summary>
+#if !SILVERLIGHT
+ [Serializable]
+#endif
+ [System.Runtime.InteropServices.GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d0000A")]
+ internal class BadReadException : ZipException
+ {
+ /// <summary>
+ /// Default ctor.
+ /// </summary>
+ public BadReadException() { }
+
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="message">The message in the exception.</param>
+ public BadReadException(String message)
+ : base(message)
+ { }
+
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="message">The message in the exception.</param>
+ /// <param name="innerException">The innerException for this exception.</param>
+ public BadReadException(String message, Exception innerException)
+ : base(message, innerException)
+ {
+ }
+
+#if ! (NETCF || SILVERLIGHT)
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="info">The serialization info for the exception.</param>
+ /// <param name="context">The streaming context from which to deserialize.</param>
+ protected BadReadException(SerializationInfo info, StreamingContext context)
+ : base(info, context)
+ { }
+#endif
+
+ }
+
+
+
+ /// <summary>
+ /// Issued when an CRC check fails upon extracting an entry from a zip archive.
+ /// </summary>
+#if !SILVERLIGHT
+ [Serializable]
+#endif
+ [System.Runtime.InteropServices.GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d00009")]
+ internal class BadCrcException : ZipException
+ {
+ /// <summary>
+ /// Default ctor.
+ /// </summary>
+ public BadCrcException() { }
+
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="message">The message in the exception.</param>
+ public BadCrcException(String message)
+ : base(message)
+ { }
+
+
+#if ! (NETCF || SILVERLIGHT)
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="info">The serialization info for the exception.</param>
+ /// <param name="context">The streaming context from which to deserialize.</param>
+ protected BadCrcException(SerializationInfo info, StreamingContext context)
+ : base(info, context)
+ { }
+#endif
+
+ }
+
+
+ /// <summary>
+ /// Issued when errors occur saving a self-extracting archive.
+ /// </summary>
+#if !SILVERLIGHT
+ [Serializable]
+#endif
+ [System.Runtime.InteropServices.GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d00008")]
+ internal class SfxGenerationException : ZipException
+ {
+ /// <summary>
+ /// Default ctor.
+ /// </summary>
+ public SfxGenerationException() { }
+
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="message">The message in the exception.</param>
+ public SfxGenerationException(String message)
+ : base(message)
+ { }
+
+#if ! (NETCF || SILVERLIGHT)
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="info">The serialization info for the exception.</param>
+ /// <param name="context">The streaming context from which to deserialize.</param>
+ protected SfxGenerationException(SerializationInfo info, StreamingContext context)
+ : base(info, context)
+ { }
+#endif
+
+ }
+
+
+ /// <summary>
+ /// Indicates that an operation was attempted on a ZipFile which was not possible
+ /// given the state of the instance. For example, if you call <c>Save()</c> on a ZipFile
+ /// which has no filename set, you can get this exception.
+ /// </summary>
+#if !SILVERLIGHT
+ [Serializable]
+#endif
+ [System.Runtime.InteropServices.GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d00007")]
+ internal class BadStateException : ZipException
+ {
+ /// <summary>
+ /// Default ctor.
+ /// </summary>
+ public BadStateException() { }
+
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="message">The message in the exception.</param>
+ public BadStateException(String message)
+ : base(message)
+ { }
+
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="message">The message in the exception.</param>
+ /// <param name="innerException">The innerException for this exception.</param>
+ public BadStateException(String message, Exception innerException)
+ : base(message, innerException)
+ {}
+
+#if ! (NETCF || SILVERLIGHT)
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="info">The serialization info for the exception.</param>
+ /// <param name="context">The streaming context from which to deserialize.</param>
+ protected BadStateException(SerializationInfo info, StreamingContext context)
+ : base(info, context)
+ { }
+#endif
+
+ }
+
+ /// <summary>
+ /// Base class for all exceptions defined by and throw by the Zip library.
+ /// </summary>
+#if !SILVERLIGHT
+ [Serializable]
+#endif
+ [System.Runtime.InteropServices.GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d00006")]
+ internal class ZipException : Exception
+ {
+ /// <summary>
+ /// Default ctor.
+ /// </summary>
+ public ZipException() { }
+
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="message">The message in the exception.</param>
+ public ZipException(String message) : base(message) { }
+
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="message">The message in the exception.</param>
+ /// <param name="innerException">The innerException for this exception.</param>
+ public ZipException(String message, Exception innerException)
+ : base(message, innerException)
+ { }
+
+#if ! (NETCF || SILVERLIGHT)
+ /// <summary>
+ /// Come on, you know how exceptions work. Why are you looking at this documentation?
+ /// </summary>
+ /// <param name="info">The serialization info for the exception.</param>
+ /// <param name="context">The streaming context from which to deserialize.</param>
+ protected ZipException(SerializationInfo info, StreamingContext context)
+ : base(info, context)
+ { }
+#endif
+
+ }
+
+}
--- /dev/null
+// ExtractExistingFileAction.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2009-August-25 08:44:37>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the ExtractExistingFileAction enum
+//
+//
+// ------------------------------------------------------------------
+
+
+namespace Ionic.Zip
+{
+
+ /// <summary>
+ /// An enum for the options when extracting an entry would overwrite an existing file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This enum describes the actions that the library can take when an
+ /// <c>Extract()</c> or <c>ExtractWithPassword()</c> method is called to extract an
+ /// entry to a filesystem, and the extraction would overwrite an existing filesystem
+ /// file.
+ /// </para>
+ /// </remarks>
+ ///
+ internal enum ExtractExistingFileAction
+ {
+ /// <summary>
+ /// Throw an exception when extraction would overwrite an existing file. (For
+ /// COM clients, this is a 0 (zero).)
+ /// </summary>
+ Throw,
+
+ /// <summary>
+ /// When extraction would overwrite an existing file, overwrite the file silently.
+ /// The overwrite will happen even if the target file is marked as read-only.
+ /// (For COM clients, this is a 1.)
+ /// </summary>
+ OverwriteSilently,
+
+ /// <summary>
+ /// When extraction would overwrite an existing file, don't overwrite the file, silently.
+ /// (For COM clients, this is a 2.)
+ /// </summary>
+ DoNotOverwrite,
+
+ /// <summary>
+ /// When extraction would overwrite an existing file, invoke the ExtractProgress
+ /// event, using an event type of <see
+ /// cref="ZipProgressEventType.Extracting_ExtractEntryWouldOverwrite"/>. In
+ /// this way, the application can decide, just-in-time, whether to overwrite the
+ /// file. For example, a GUI application may wish to pop up a dialog to allow
+ /// the user to choose. You may want to examine the <see
+ /// cref="ExtractProgressEventArgs.ExtractLocation"/> property before making
+ /// the decision. If, after your processing in the Extract progress event, you
+ /// want to NOT extract the file, set <see cref="ZipEntry.ExtractExistingFile"/>
+ /// on the <c>ZipProgressEventArgs.CurrentEntry</c> to <c>DoNotOverwrite</c>.
+ /// If you do want to extract the file, set <c>ZipEntry.ExtractExistingFile</c>
+ /// to <c>OverwriteSilently</c>. If you want to cancel the Extraction, set
+ /// <c>ZipProgressEventArgs.Cancel</c> to true. Cancelling differs from using
+ /// DoNotOverwrite in that a cancel will not extract any further entries, if
+ /// there are any. (For COM clients, the value of this enum is a 3.)
+ /// </summary>
+ InvokeExtractProgressEvent,
+ }
+
+}
--- /dev/null
+//#define SelectorTrace
+
+// FileSelector.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2008-2011 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved: <2011-August-05 11:03:11>
+//
+// ------------------------------------------------------------------
+//
+// This module implements a "file selector" that finds files based on a
+// set of inclusion criteria, including filename, size, file time, and
+// potentially file attributes. The criteria are given in a string with
+// a simple expression language. Examples:
+//
+// find all .txt files:
+// name = *.txt
+//
+// shorthand for the above
+// *.txt
+//
+// all files modified after January 1st, 2009
+// mtime > 2009-01-01
+//
+// All .txt files modified after the first of the year
+// name = *.txt AND mtime > 2009-01-01
+//
+// All .txt files modified after the first of the year, or any file with the archive bit set
+// (name = *.txt AND mtime > 2009-01-01) or (attribtues = A)
+//
+// All .txt files or any file greater than 1mb in size
+// (name = *.txt or size > 1mb)
+//
+// and so on.
+// ------------------------------------------------------------------
+
+
+using System;
+using System.IO;
+using System.Text;
+using System.Reflection;
+using System.ComponentModel;
+using System.Text.RegularExpressions;
+using System.Collections.Generic;
+#if SILVERLIGHT
+using System.Linq;
+#endif
+
+namespace Ionic
+{
+
+ /// <summary>
+ /// Enumerates the options for a logical conjunction. This enum is intended for use
+ /// internally by the FileSelector class.
+ /// </summary>
+ internal enum LogicalConjunction
+ {
+ NONE,
+ AND,
+ OR,
+ XOR,
+ }
+
+ internal enum WhichTime
+ {
+ atime,
+ mtime,
+ ctime,
+ }
+
+
+ internal enum ComparisonOperator
+ {
+ [Description(">")]
+ GreaterThan,
+ [Description(">=")]
+ GreaterThanOrEqualTo,
+ [Description("<")]
+ LesserThan,
+ [Description("<=")]
+ LesserThanOrEqualTo,
+ [Description("=")]
+ EqualTo,
+ [Description("!=")]
+ NotEqualTo
+ }
+
+
+ internal abstract partial class SelectionCriterion
+ {
+ internal virtual bool Verbose
+ {
+ get;set;
+ }
+ internal abstract bool Evaluate(string filename);
+
+ [System.Diagnostics.Conditional("SelectorTrace")]
+ protected static void CriterionTrace(string format, params object[] args)
+ {
+ //System.Console.WriteLine(" " + format, args);
+ }
+ }
+
+
+ internal partial class SizeCriterion : SelectionCriterion
+ {
+ internal ComparisonOperator Operator;
+ internal Int64 Size;
+
+ public override String ToString()
+ {
+ StringBuilder sb = new StringBuilder();
+ sb.Append("size ").Append(EnumUtil.GetDescription(Operator)).Append(" ").Append(Size.ToString());
+ return sb.ToString();
+ }
+
+ internal override bool Evaluate(string filename)
+ {
+ System.IO.FileInfo fi = new System.IO.FileInfo(filename);
+ CriterionTrace("SizeCriterion::Evaluate('{0}' [{1}])",
+ filename, this.ToString());
+ return _Evaluate(fi.Length);
+ }
+
+ private bool _Evaluate(Int64 Length)
+ {
+ bool result = false;
+ switch (Operator)
+ {
+ case ComparisonOperator.GreaterThanOrEqualTo:
+ result = Length >= Size;
+ break;
+ case ComparisonOperator.GreaterThan:
+ result = Length > Size;
+ break;
+ case ComparisonOperator.LesserThanOrEqualTo:
+ result = Length <= Size;
+ break;
+ case ComparisonOperator.LesserThan:
+ result = Length < Size;
+ break;
+ case ComparisonOperator.EqualTo:
+ result = Length == Size;
+ break;
+ case ComparisonOperator.NotEqualTo:
+ result = Length != Size;
+ break;
+ default:
+ throw new ArgumentException("Operator");
+ }
+ return result;
+ }
+
+ }
+
+
+
+ internal partial class TimeCriterion : SelectionCriterion
+ {
+ internal ComparisonOperator Operator;
+ internal WhichTime Which;
+ internal DateTime Time;
+
+ public override String ToString()
+ {
+ StringBuilder sb = new StringBuilder();
+ sb.Append(Which.ToString()).Append(" ").Append(EnumUtil.GetDescription(Operator)).Append(" ").Append(Time.ToString("yyyy-MM-dd-HH:mm:ss"));
+ return sb.ToString();
+ }
+
+ internal override bool Evaluate(string filename)
+ {
+ DateTime x;
+ switch (Which)
+ {
+ case WhichTime.atime:
+ x = System.IO.File.GetLastAccessTime(filename).ToUniversalTime();
+ break;
+ case WhichTime.mtime:
+ x = System.IO.File.GetLastWriteTime(filename).ToUniversalTime();
+ break;
+ case WhichTime.ctime:
+ x = System.IO.File.GetCreationTime(filename).ToUniversalTime();
+ break;
+ default:
+ throw new ArgumentException("Operator");
+ }
+ CriterionTrace("TimeCriterion({0},{1})= {2}", filename, Which.ToString(), x);
+ return _Evaluate(x);
+ }
+
+
+ private bool _Evaluate(DateTime x)
+ {
+ bool result = false;
+ switch (Operator)
+ {
+ case ComparisonOperator.GreaterThanOrEqualTo:
+ result = (x >= Time);
+ break;
+ case ComparisonOperator.GreaterThan:
+ result = (x > Time);
+ break;
+ case ComparisonOperator.LesserThanOrEqualTo:
+ result = (x <= Time);
+ break;
+ case ComparisonOperator.LesserThan:
+ result = (x < Time);
+ break;
+ case ComparisonOperator.EqualTo:
+ result = (x == Time);
+ break;
+ case ComparisonOperator.NotEqualTo:
+ result = (x != Time);
+ break;
+ default:
+ throw new ArgumentException("Operator");
+ }
+
+ CriterionTrace("TimeCriterion: {0}", result);
+ return result;
+ }
+ }
+
+
+
+ internal partial class NameCriterion : SelectionCriterion
+ {
+ private Regex _re;
+ private String _regexString;
+ internal ComparisonOperator Operator;
+ private string _MatchingFileSpec;
+ internal virtual string MatchingFileSpec
+ {
+ set
+ {
+ // workitem 8245
+ if (Directory.Exists(value))
+ {
+ _MatchingFileSpec = ".\\" + value + "\\*.*";
+ }
+ else
+ {
+ _MatchingFileSpec = value;
+ }
+
+ _regexString = "^" +
+ Regex.Escape(_MatchingFileSpec)
+ .Replace(@"\\\*\.\*", @"\\([^\.]+|.*\.[^\\\.]*)")
+ .Replace(@"\.\*", @"\.[^\\\.]*")
+ .Replace(@"\*", @".*")
+ //.Replace(@"\*", @"[^\\\.]*") // ill-conceived
+ .Replace(@"\?", @"[^\\\.]")
+ + "$";
+
+ CriterionTrace("NameCriterion regexString({0})", _regexString);
+
+ _re = new Regex(_regexString, RegexOptions.IgnoreCase);
+ }
+ }
+
+
+ public override String ToString()
+ {
+ StringBuilder sb = new StringBuilder();
+ sb.Append("name ").Append(EnumUtil.GetDescription(Operator))
+ .Append(" '")
+ .Append(_MatchingFileSpec)
+ .Append("'");
+ return sb.ToString();
+ }
+
+
+ internal override bool Evaluate(string filename)
+ {
+ CriterionTrace("NameCriterion::Evaluate('{0}' pattern[{1}])",
+ filename, _MatchingFileSpec);
+ return _Evaluate(filename);
+ }
+
+ private bool _Evaluate(string fullpath)
+ {
+ CriterionTrace("NameCriterion::Evaluate({0})", fullpath);
+ // No slash in the pattern implicitly means recurse, which means compare to
+ // filename only, not full path.
+ String f = (_MatchingFileSpec.IndexOf('\\') == -1)
+ ? System.IO.Path.GetFileName(fullpath)
+ : fullpath; // compare to fullpath
+
+ bool result = _re.IsMatch(f);
+
+ if (Operator != ComparisonOperator.EqualTo)
+ result = !result;
+ return result;
+ }
+ }
+
+
+ internal partial class TypeCriterion : SelectionCriterion
+ {
+ private char ObjectType; // 'D' = Directory, 'F' = File
+ internal ComparisonOperator Operator;
+ internal string AttributeString
+ {
+ get
+ {
+ return ObjectType.ToString();
+ }
+ set
+ {
+ if (value.Length != 1 ||
+ (value[0]!='D' && value[0]!='F'))
+ throw new ArgumentException("Specify a single character: either D or F");
+ ObjectType = value[0];
+ }
+ }
+
+ public override String ToString()
+ {
+ StringBuilder sb = new StringBuilder();
+ sb.Append("type ").Append(EnumUtil.GetDescription(Operator)).Append(" ").Append(AttributeString);
+ return sb.ToString();
+ }
+
+ internal override bool Evaluate(string filename)
+ {
+ CriterionTrace("TypeCriterion::Evaluate({0})", filename);
+
+ bool result = (ObjectType == 'D')
+ ? Directory.Exists(filename)
+ : File.Exists(filename);
+
+ if (Operator != ComparisonOperator.EqualTo)
+ result = !result;
+ return result;
+ }
+ }
+
+
+#if !SILVERLIGHT
+ internal partial class AttributesCriterion : SelectionCriterion
+ {
+ private FileAttributes _Attributes;
+ internal ComparisonOperator Operator;
+ internal string AttributeString
+ {
+ get
+ {
+ string result = "";
+ if ((_Attributes & FileAttributes.Hidden) != 0)
+ result += "H";
+ if ((_Attributes & FileAttributes.System) != 0)
+ result += "S";
+ if ((_Attributes & FileAttributes.ReadOnly) != 0)
+ result += "R";
+ if ((_Attributes & FileAttributes.Archive) != 0)
+ result += "A";
+ if ((_Attributes & FileAttributes.ReparsePoint) != 0)
+ result += "L";
+ if ((_Attributes & FileAttributes.NotContentIndexed) != 0)
+ result += "I";
+ return result;
+ }
+
+ set
+ {
+ _Attributes = FileAttributes.Normal;
+ foreach (char c in value.ToUpper())
+ {
+ switch (c)
+ {
+ case 'H':
+ if ((_Attributes & FileAttributes.Hidden) != 0)
+ throw new ArgumentException(String.Format("Repeated flag. ({0})", c), "value");
+ _Attributes |= FileAttributes.Hidden;
+ break;
+
+ case 'R':
+ if ((_Attributes & FileAttributes.ReadOnly) != 0)
+ throw new ArgumentException(String.Format("Repeated flag. ({0})", c), "value");
+ _Attributes |= FileAttributes.ReadOnly;
+ break;
+
+ case 'S':
+ if ((_Attributes & FileAttributes.System) != 0)
+ throw new ArgumentException(String.Format("Repeated flag. ({0})", c), "value");
+ _Attributes |= FileAttributes.System;
+ break;
+
+ case 'A':
+ if ((_Attributes & FileAttributes.Archive) != 0)
+ throw new ArgumentException(String.Format("Repeated flag. ({0})", c), "value");
+ _Attributes |= FileAttributes.Archive;
+ break;
+
+ case 'I':
+ if ((_Attributes & FileAttributes.NotContentIndexed) != 0)
+ throw new ArgumentException(String.Format("Repeated flag. ({0})", c), "value");
+ _Attributes |= FileAttributes.NotContentIndexed;
+ break;
+
+ case 'L':
+ if ((_Attributes & FileAttributes.ReparsePoint) != 0)
+ throw new ArgumentException(String.Format("Repeated flag. ({0})", c), "value");
+ _Attributes |= FileAttributes.ReparsePoint;
+ break;
+
+ default:
+ throw new ArgumentException(value);
+ }
+ }
+ }
+ }
+
+
+ public override String ToString()
+ {
+ StringBuilder sb = new StringBuilder();
+ sb.Append("attributes ").Append(EnumUtil.GetDescription(Operator)).Append(" ").Append(AttributeString);
+ return sb.ToString();
+ }
+
+ private bool _EvaluateOne(FileAttributes fileAttrs, FileAttributes criterionAttrs)
+ {
+ bool result = false;
+ if ((_Attributes & criterionAttrs) == criterionAttrs)
+ result = ((fileAttrs & criterionAttrs) == criterionAttrs);
+ else
+ result = true;
+ return result;
+ }
+
+
+
+ internal override bool Evaluate(string filename)
+ {
+ // workitem 10191
+ if (Directory.Exists(filename))
+ {
+ // Directories don't have file attributes, so the result
+ // of an evaluation is always NO. This gets negated if
+ // the operator is NotEqualTo.
+ return (Operator != ComparisonOperator.EqualTo);
+ }
+#if NETCF
+ FileAttributes fileAttrs = NetCfFile.GetAttributes(filename);
+#else
+ FileAttributes fileAttrs = System.IO.File.GetAttributes(filename);
+#endif
+
+ return _Evaluate(fileAttrs);
+ }
+
+ private bool _Evaluate(FileAttributes fileAttrs)
+ {
+ bool result = _EvaluateOne(fileAttrs, FileAttributes.Hidden);
+ if (result)
+ result = _EvaluateOne(fileAttrs, FileAttributes.System);
+ if (result)
+ result = _EvaluateOne(fileAttrs, FileAttributes.ReadOnly);
+ if (result)
+ result = _EvaluateOne(fileAttrs, FileAttributes.Archive);
+ if (result)
+ result = _EvaluateOne(fileAttrs, FileAttributes.NotContentIndexed);
+ if (result)
+ result = _EvaluateOne(fileAttrs, FileAttributes.ReparsePoint);
+
+ if (Operator != ComparisonOperator.EqualTo)
+ result = !result;
+
+ return result;
+ }
+ }
+#endif
+
+
+ internal partial class CompoundCriterion : SelectionCriterion
+ {
+ internal LogicalConjunction Conjunction;
+ internal SelectionCriterion Left;
+
+ private SelectionCriterion _Right;
+ internal SelectionCriterion Right
+ {
+ get { return _Right; }
+ set
+ {
+ _Right = value;
+ if (value == null)
+ Conjunction = LogicalConjunction.NONE;
+ else if (Conjunction == LogicalConjunction.NONE)
+ Conjunction = LogicalConjunction.AND;
+ }
+ }
+
+
+ internal override bool Evaluate(string filename)
+ {
+ bool result = Left.Evaluate(filename);
+ switch (Conjunction)
+ {
+ case LogicalConjunction.AND:
+ if (result)
+ result = Right.Evaluate(filename);
+ break;
+ case LogicalConjunction.OR:
+ if (!result)
+ result = Right.Evaluate(filename);
+ break;
+ case LogicalConjunction.XOR:
+ result ^= Right.Evaluate(filename);
+ break;
+ default:
+ throw new ArgumentException("Conjunction");
+ }
+ return result;
+ }
+
+
+ public override String ToString()
+ {
+ StringBuilder sb = new StringBuilder();
+ sb.Append("(")
+ .Append((Left != null) ? Left.ToString() : "null")
+ .Append(" ")
+ .Append(Conjunction.ToString())
+ .Append(" ")
+ .Append((Right != null) ? Right.ToString() : "null")
+ .Append(")");
+ return sb.ToString();
+ }
+ }
+
+
+
+ /// <summary>
+ /// FileSelector encapsulates logic that selects files from a source - a zip file
+ /// or the filesystem - based on a set of criteria. This class is used internally
+ /// by the DotNetZip library, in particular for the AddSelectedFiles() methods.
+ /// This class can also be used independently of the zip capability in DotNetZip.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// The FileSelector class is used internally by the ZipFile class for selecting
+ /// files for inclusion into the ZipFile, when the <see
+ /// cref="Ionic.Zip.ZipFile.AddSelectedFiles(String,String)"/> method, or one of
+ /// its overloads, is called. It's also used for the <see
+ /// cref="Ionic.Zip.ZipFile.ExtractSelectedEntries(String)"/> methods. Typically, an
+ /// application that creates or manipulates Zip archives will not directly
+ /// interact with the FileSelector class.
+ /// </para>
+ ///
+ /// <para>
+ /// Some applications may wish to use the FileSelector class directly, to
+ /// select files from disk volumes based on a set of criteria, without creating or
+ /// querying Zip archives. The file selection criteria include: a pattern to
+ /// match the filename; the last modified, created, or last accessed time of the
+ /// file; the size of the file; and the attributes of the file.
+ /// </para>
+ ///
+ /// <para>
+ /// Consult the documentation for <see cref="SelectionCriteria"/>
+ /// for more information on specifying the selection criteria.
+ /// </para>
+ ///
+ /// </remarks>
+ internal partial class FileSelector
+ {
+ internal SelectionCriterion _Criterion;
+
+#if NOTUSED
+ /// <summary>
+ /// The default constructor.
+ /// </summary>
+ /// <remarks>
+ /// Typically, applications won't use this constructor. Instead they'll
+ /// call the constructor that accepts a selectionCriteria string. If you
+ /// use this constructor, you'll want to set the SelectionCriteria
+ /// property on the instance before calling SelectFiles().
+ /// </remarks>
+ protected FileSelector() { }
+#endif
+ /// <summary>
+ /// Constructor that allows the caller to specify file selection criteria.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This constructor allows the caller to specify a set of criteria for
+ /// selection of files.
+ /// </para>
+ ///
+ /// <para>
+ /// See <see cref="FileSelector.SelectionCriteria"/> for a description of
+ /// the syntax of the selectionCriteria string.
+ /// </para>
+ ///
+ /// <para>
+ /// By default the FileSelector will traverse NTFS Reparse Points. To
+ /// change this, use <see cref="FileSelector(String,
+ /// bool)">FileSelector(String, bool)</see>.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="selectionCriteria">The criteria for file selection.</param>
+ public FileSelector(String selectionCriteria)
+ : this(selectionCriteria, true)
+ {
+ }
+
+ /// <summary>
+ /// Constructor that allows the caller to specify file selection criteria.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This constructor allows the caller to specify a set of criteria for
+ /// selection of files.
+ /// </para>
+ ///
+ /// <para>
+ /// See <see cref="FileSelector.SelectionCriteria"/> for a description of
+ /// the syntax of the selectionCriteria string.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="selectionCriteria">The criteria for file selection.</param>
+ /// <param name="traverseDirectoryReparsePoints">
+ /// whether to traverse NTFS reparse points (junctions).
+ /// </param>
+ public FileSelector(String selectionCriteria, bool traverseDirectoryReparsePoints)
+ {
+ if (!String.IsNullOrEmpty(selectionCriteria))
+ _Criterion = _ParseCriterion(selectionCriteria);
+ TraverseReparsePoints = traverseDirectoryReparsePoints;
+ }
+
+
+
+ /// <summary>
+ /// The string specifying which files to include when retrieving.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// Specify the criteria in statements of 3 elements: a noun, an operator,
+ /// and a value. Consider the string "name != *.doc" . The noun is
+ /// "name". The operator is "!=", implying "Not Equal". The value is
+ /// "*.doc". That criterion, in English, says "all files with a name that
+ /// does not end in the .doc extension."
+ /// </para>
+ ///
+ /// <para>
+ /// Supported nouns include "name" (or "filename") for the filename;
+ /// "atime", "mtime", and "ctime" for last access time, last modfied time,
+ /// and created time of the file, respectively; "attributes" (or "attrs")
+ /// for the file attributes; "size" (or "length") for the file length
+ /// (uncompressed); and "type" for the type of object, either a file or a
+ /// directory. The "attributes", "type", and "name" nouns all support =
+ /// and != as operators. The "size", "atime", "mtime", and "ctime" nouns
+ /// support = and !=, and >, >=, <, <= as well. The times are
+ /// taken to be expressed in local time.
+ /// </para>
+ ///
+ /// <para>
+ /// Specify values for the file attributes as a string with one or more of
+ /// the characters H,R,S,A,I,L in any order, implying file attributes of
+ /// Hidden, ReadOnly, System, Archive, NotContextIndexed, and ReparsePoint
+ /// (symbolic link) respectively.
+ /// </para>
+ ///
+ /// <para>
+ /// To specify a time, use YYYY-MM-DD-HH:mm:ss or YYYY/MM/DD-HH:mm:ss as
+ /// the format. If you omit the HH:mm:ss portion, it is assumed to be
+ /// 00:00:00 (midnight).
+ /// </para>
+ ///
+ /// <para>
+ /// The value for a size criterion is expressed in integer quantities of
+ /// bytes, kilobytes (use k or kb after the number), megabytes (m or mb),
+ /// or gigabytes (g or gb).
+ /// </para>
+ ///
+ /// <para>
+ /// The value for a name is a pattern to match against the filename,
+ /// potentially including wildcards. The pattern follows CMD.exe glob
+ /// rules: * implies one or more of any character, while ? implies one
+ /// character. If the name pattern contains any slashes, it is matched to
+ /// the entire filename, including the path; otherwise, it is matched
+ /// against only the filename without the path. This means a pattern of
+ /// "*\*.*" matches all files one directory level deep, while a pattern of
+ /// "*.*" matches all files in all directories.
+ /// </para>
+ ///
+ /// <para>
+ /// To specify a name pattern that includes spaces, use single quotes
+ /// around the pattern. A pattern of "'* *.*'" will match all files that
+ /// have spaces in the filename. The full criteria string for that would
+ /// be "name = '* *.*'" .
+ /// </para>
+ ///
+ /// <para>
+ /// The value for a type criterion is either F (implying a file) or D
+ /// (implying a directory).
+ /// </para>
+ ///
+ /// <para>
+ /// Some examples:
+ /// </para>
+ ///
+ /// <list type="table">
+ /// <listheader>
+ /// <term>criteria</term>
+ /// <description>Files retrieved</description>
+ /// </listheader>
+ ///
+ /// <item>
+ /// <term>name != *.xls </term>
+ /// <description>any file with an extension that is not .xls
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>name = *.mp3 </term>
+ /// <description>any file with a .mp3 extension.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>*.mp3</term>
+ /// <description>(same as above) any file with a .mp3 extension.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>attributes = A </term>
+ /// <description>all files whose attributes include the Archive bit.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>attributes != H </term>
+ /// <description>all files whose attributes do not include the Hidden bit.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>mtime > 2009-01-01</term>
+ /// <description>all files with a last modified time after January 1st, 2009.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ctime > 2009/01/01-03:00:00</term>
+ /// <description>all files with a created time after 3am (local time),
+ /// on January 1st, 2009.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>size > 2gb</term>
+ /// <description>all files whose uncompressed size is greater than 2gb.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>type = D</term>
+ /// <description>all directories in the filesystem. </description>
+ /// </item>
+ ///
+ /// </list>
+ ///
+ /// <para>
+ /// You can combine criteria with the conjunctions AND, OR, and XOR. Using
+ /// a string like "name = *.txt AND size >= 100k" for the
+ /// selectionCriteria retrieves entries whose names end in .txt, and whose
+ /// uncompressed size is greater than or equal to 100 kilobytes.
+ /// </para>
+ ///
+ /// <para>
+ /// For more complex combinations of criteria, you can use parenthesis to
+ /// group clauses in the boolean logic. Absent parenthesis, the
+ /// precedence of the criterion atoms is determined by order of
+ /// appearance. Unlike the C# language, the AND conjunction does not take
+ /// precendence over the logical OR. This is important only in strings
+ /// that contain 3 or more criterion atoms. In other words, "name = *.txt
+ /// and size > 1000 or attributes = H" implies "((name = *.txt AND size
+ /// > 1000) OR attributes = H)" while "attributes = H OR name = *.txt
+ /// and size > 1000" evaluates to "((attributes = H OR name = *.txt)
+ /// AND size > 1000)". When in doubt, use parenthesis.
+ /// </para>
+ ///
+ /// <para>
+ /// Using time properties requires some extra care. If you want to
+ /// retrieve all entries that were last updated on 2009 February 14,
+ /// specify "mtime >= 2009-02-14 AND mtime < 2009-02-15". Read this
+ /// to say: all files updated after 12:00am on February 14th, until
+ /// 12:00am on February 15th. You can use the same bracketing approach to
+ /// specify any time period - a year, a month, a week, and so on.
+ /// </para>
+ ///
+ /// <para>
+ /// The syntax allows one special case: if you provide a string with no
+ /// spaces, it is treated as a pattern to match for the filename.
+ /// Therefore a string like "*.xls" will be equivalent to specifying "name
+ /// = *.xls". This "shorthand" notation does not work with compound
+ /// criteria.
+ /// </para>
+ ///
+ /// <para>
+ /// There is no logic in this class that insures that the inclusion
+ /// criteria are internally consistent. For example, it's possible to
+ /// specify criteria that says the file must have a size of less than 100
+ /// bytes, as well as a size that is greater than 1000 bytes. Obviously
+ /// no file will ever satisfy such criteria, but this class does not check
+ /// for or detect such inconsistencies.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <exception cref="System.Exception">
+ /// Thrown in the setter if the value has an invalid syntax.
+ /// </exception>
+ public String SelectionCriteria
+ {
+ get
+ {
+ if (_Criterion == null) return null;
+ return _Criterion.ToString();
+ }
+ set
+ {
+ if (value == null) _Criterion = null;
+ else if (value.Trim() == "") _Criterion = null;
+ else
+ _Criterion = _ParseCriterion(value);
+ }
+ }
+
+ /// <summary>
+ /// Indicates whether searches will traverse NTFS reparse points, like Junctions.
+ /// </summary>
+ public bool TraverseReparsePoints
+ {
+ get; set;
+ }
+
+
+ private enum ParseState
+ {
+ Start,
+ OpenParen,
+ CriterionDone,
+ ConjunctionPending,
+ Whitespace,
+ }
+
+
+ private static class RegexAssertions
+ {
+ internal static readonly String PrecededByOddNumberOfSingleQuotes = "(?<=(?:[^']*'[^']*')*'[^']*)";
+ internal static readonly String FollowedByOddNumberOfSingleQuotesAndLineEnd = "(?=[^']*'(?:[^']*'[^']*')*[^']*$)";
+
+ internal static readonly String PrecededByEvenNumberOfSingleQuotes = "(?<=(?:[^']*'[^']*')*[^']*)";
+ internal static readonly String FollowedByEvenNumberOfSingleQuotesAndLineEnd = "(?=(?:[^']*'[^']*')*[^']*$)";
+ }
+
+
+ private static string NormalizeCriteriaExpression(string source)
+ {
+ // The goal here is to normalize the criterion expression. At output, in
+ // the transformed criterion string, every significant syntactic element
+ // - a property element, grouping paren for the boolean logic, operator
+ // ( = < > != ), conjunction, or property value - will be separated from
+ // its neighbors by at least one space. Thus,
+ //
+ // before after
+ // -------------------------------------------------------------------
+ // name=*.txt name = *.txt
+ // (size>100)AND(name=*.txt) ( size > 100 ) AND ( name = *.txt )
+ //
+ // This is relatively straightforward using regular expression
+ // replacement. This method applies a distinct regex pattern and
+ // corresponding replacement string for each one of a number of cases:
+ // an open paren followed by a word; a word followed by a close-paren; a
+ // pair of open parens; a close paren followed by a word (which should
+ // then be followed by an open paren). And so on. These patterns and
+ // replacements are all stored in prPairs. By applying each of these
+ // regex replacements in turn, we get the transformed string. Easy.
+ //
+ // The resulting "normalized" criterion string, is then used as the
+ // subject that gets parsed, by splitting the string into tokens that
+ // are separated by spaces. Here, there's a twist. The spaces within
+ // single-quote delimiters do not delimit distinct tokens. So, this
+ // normalization method temporarily replaces those spaces with
+ // ASCII 6 (0x06), a control character which is not a legal
+ // character in a filename. The parsing logic that happens later will
+ // revert that change, restoring the original value of the filename
+ // specification.
+ //
+ // To illustrate, for a "before" string of [(size>100)AND(name='Name
+ // (with Parens).txt')] , the "after" string is [( size > 100 ) AND
+ // ( name = 'Name\u0006(with\u0006Parens).txt' )].
+ //
+
+ string[][] prPairs =
+ {
+ // A. opening double parens - insert a space between them
+ new string[] { @"([^']*)\(\(([^']+)", "$1( ($2" },
+
+ // B. closing double parens - insert a space between
+ new string[] { @"(.)\)\)", "$1) )" },
+
+ // C. single open paren with a following word - insert a space between
+ new string[] { @"\((\S)", "( $1" },
+
+ // D. single close paren with a preceding word - insert a space between the two
+ new string[] { @"(\S)\)", "$1 )" },
+
+ // E. close paren at line start?, insert a space before the close paren
+ // this seems like a degenerate case. I don't recall why it's here.
+ new string[] { @"^\)", " )" },
+
+ // F. a word (likely a conjunction) followed by an open paren - insert a space between
+ new string[] { @"(\S)\(", "$1 (" },
+
+ // G. single close paren followed by word - insert a paren after close paren
+ new string[] { @"\)(\S)", ") $1" },
+
+ // H. insert space between = and a following single quote
+ //new string[] { @"(=|!=)('[^']*')", "$1 $2" },
+ new string[] { @"(=)('[^']*')", "$1 $2" },
+
+ // I. insert space between property names and the following operator
+ //new string[] { @"([^ ])([><(?:!=)=])", "$1 $2" },
+ new string[] { @"([^ !><])(>|<|!=|=)", "$1 $2" },
+
+ // J. insert spaces between operators and the following values
+ //new string[] { @"([><(?:!=)=])([^ ])", "$1 $2" },
+ new string[] { @"(>|<|!=|=)([^ =])", "$1 $2" },
+
+ // K. replace fwd slash with backslash
+ new string[] { @"/", "\\" },
+ };
+
+ string interim = source;
+
+ for (int i=0; i < prPairs.Length; i++)
+ {
+ //char caseIdx = (char)('A' + i);
+ string pattern = RegexAssertions.PrecededByEvenNumberOfSingleQuotes +
+ prPairs[i][0] +
+ RegexAssertions.FollowedByEvenNumberOfSingleQuotesAndLineEnd;
+
+ interim = Regex.Replace(interim, pattern, prPairs[i][1]);
+ }
+
+ // match a fwd slash, followed by an odd number of single quotes.
+ // This matches fwd slashes only inside a pair of single quote delimiters,
+ // eg, a filename. This must be done as well as the case above, to handle
+ // filenames specified inside quotes as well as filenames without quotes.
+ var regexPattern = @"/" +
+ RegexAssertions.FollowedByOddNumberOfSingleQuotesAndLineEnd;
+ // replace with backslash
+ interim = Regex.Replace(interim, regexPattern, "\\");
+
+ // match a space, followed by an odd number of single quotes.
+ // This matches spaces only inside a pair of single quote delimiters.
+ regexPattern = " " +
+ RegexAssertions.FollowedByOddNumberOfSingleQuotesAndLineEnd;
+
+ // Replace all spaces that appear inside single quotes, with
+ // ascii 6. This allows a split on spaces to get tokens in
+ // the expression. The split will not split any filename or
+ // wildcard that appears within single quotes. After tokenizing, we
+ // need to replace ascii 6 with ascii 32 to revert the
+ // spaces within quotes.
+ return Regex.Replace(interim, regexPattern, "\u0006");
+ }
+
+
+ private static SelectionCriterion _ParseCriterion(String s)
+ {
+ if (s == null) return null;
+
+ // inject spaces after open paren and before close paren, etc
+ s = NormalizeCriteriaExpression(s);
+
+ // no spaces in the criteria is shorthand for filename glob
+ if (s.IndexOf(" ") == -1)
+ s = "name = " + s;
+
+ // split the expression into tokens
+ string[] tokens = s.Trim().Split(' ', '\t');
+
+ if (tokens.Length < 3) throw new ArgumentException(s);
+
+ SelectionCriterion current = null;
+
+ LogicalConjunction pendingConjunction = LogicalConjunction.NONE;
+
+ ParseState state;
+ var stateStack = new System.Collections.Generic.Stack<ParseState>();
+ var critStack = new System.Collections.Generic.Stack<SelectionCriterion>();
+ stateStack.Push(ParseState.Start);
+
+ for (int i = 0; i < tokens.Length; i++)
+ {
+ string tok1 = tokens[i].ToLower();
+ switch (tok1)
+ {
+ case "and":
+ case "xor":
+ case "or":
+ state = stateStack.Peek();
+ if (state != ParseState.CriterionDone)
+ throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
+
+ if (tokens.Length <= i + 3)
+ throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
+
+ pendingConjunction = (LogicalConjunction)Enum.Parse(typeof(LogicalConjunction), tokens[i].ToUpper(), true);
+ current = new CompoundCriterion { Left = current, Right = null, Conjunction = pendingConjunction };
+ stateStack.Push(state);
+ stateStack.Push(ParseState.ConjunctionPending);
+ critStack.Push(current);
+ break;
+
+ case "(":
+ state = stateStack.Peek();
+ if (state != ParseState.Start && state != ParseState.ConjunctionPending && state != ParseState.OpenParen)
+ throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
+
+ if (tokens.Length <= i + 4)
+ throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
+
+ stateStack.Push(ParseState.OpenParen);
+ break;
+
+ case ")":
+ state = stateStack.Pop();
+ if (stateStack.Peek() != ParseState.OpenParen)
+ throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
+
+ stateStack.Pop();
+ stateStack.Push(ParseState.CriterionDone);
+ break;
+
+ case "atime":
+ case "ctime":
+ case "mtime":
+ if (tokens.Length <= i + 2)
+ throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
+
+ DateTime t;
+ try
+ {
+ t = DateTime.ParseExact(tokens[i + 2], "yyyy-MM-dd-HH:mm:ss", null);
+ }
+ catch (FormatException)
+ {
+ try
+ {
+ t = DateTime.ParseExact(tokens[i + 2], "yyyy/MM/dd-HH:mm:ss", null);
+ }
+ catch (FormatException)
+ {
+ try
+ {
+ t = DateTime.ParseExact(tokens[i + 2], "yyyy/MM/dd", null);
+ }
+ catch (FormatException)
+ {
+ try
+ {
+ t = DateTime.ParseExact(tokens[i + 2], "MM/dd/yyyy", null);
+ }
+ catch (FormatException)
+ {
+ t = DateTime.ParseExact(tokens[i + 2], "yyyy-MM-dd", null);
+ }
+ }
+ }
+ }
+ t= DateTime.SpecifyKind(t, DateTimeKind.Local).ToUniversalTime();
+ current = new TimeCriterion
+ {
+ Which = (WhichTime)Enum.Parse(typeof(WhichTime), tokens[i], true),
+ Operator = (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1]),
+ Time = t
+ };
+ i += 2;
+ stateStack.Push(ParseState.CriterionDone);
+ break;
+
+
+ case "length":
+ case "size":
+ if (tokens.Length <= i + 2)
+ throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
+
+ Int64 sz = 0;
+ string v = tokens[i + 2];
+ if (v.ToUpper().EndsWith("K"))
+ sz = Int64.Parse(v.Substring(0, v.Length - 1)) * 1024;
+ else if (v.ToUpper().EndsWith("KB"))
+ sz = Int64.Parse(v.Substring(0, v.Length - 2)) * 1024;
+ else if (v.ToUpper().EndsWith("M"))
+ sz = Int64.Parse(v.Substring(0, v.Length - 1)) * 1024 * 1024;
+ else if (v.ToUpper().EndsWith("MB"))
+ sz = Int64.Parse(v.Substring(0, v.Length - 2)) * 1024 * 1024;
+ else if (v.ToUpper().EndsWith("G"))
+ sz = Int64.Parse(v.Substring(0, v.Length - 1)) * 1024 * 1024 * 1024;
+ else if (v.ToUpper().EndsWith("GB"))
+ sz = Int64.Parse(v.Substring(0, v.Length - 2)) * 1024 * 1024 * 1024;
+ else sz = Int64.Parse(tokens[i + 2]);
+
+ current = new SizeCriterion
+ {
+ Size = sz,
+ Operator = (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1])
+ };
+ i += 2;
+ stateStack.Push(ParseState.CriterionDone);
+ break;
+
+ case "filename":
+ case "name":
+ {
+ if (tokens.Length <= i + 2)
+ throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
+
+ ComparisonOperator c =
+ (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1]);
+
+ if (c != ComparisonOperator.NotEqualTo && c != ComparisonOperator.EqualTo)
+ throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
+
+ string m = tokens[i + 2];
+
+ // handle single-quoted filespecs (used to include
+ // spaces in filename patterns)
+ if (m.StartsWith("'") && m.EndsWith("'"))
+ {
+ // trim off leading and trailing single quotes and
+ // revert the control characters to spaces.
+ m = m.Substring(1, m.Length - 2)
+ .Replace("\u0006", " ");
+ }
+
+ // if (m.StartsWith("'"))
+ // m = m.Replace("\u0006", " ");
+
+ current = new NameCriterion
+ {
+ MatchingFileSpec = m,
+ Operator = c
+ };
+ i += 2;
+ stateStack.Push(ParseState.CriterionDone);
+ }
+ break;
+
+#if !SILVERLIGHT
+ case "attrs":
+ case "attributes":
+#endif
+ case "type":
+ {
+ if (tokens.Length <= i + 2)
+ throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
+
+ ComparisonOperator c =
+ (ComparisonOperator)EnumUtil.Parse(typeof(ComparisonOperator), tokens[i + 1]);
+
+ if (c != ComparisonOperator.NotEqualTo && c != ComparisonOperator.EqualTo)
+ throw new ArgumentException(String.Join(" ", tokens, i, tokens.Length - i));
+
+#if SILVERLIGHT
+ current = (SelectionCriterion) new TypeCriterion
+ {
+ AttributeString = tokens[i + 2],
+ Operator = c
+ };
+#else
+ current = (tok1 == "type")
+ ? (SelectionCriterion) new TypeCriterion
+ {
+ AttributeString = tokens[i + 2],
+ Operator = c
+ }
+ : (SelectionCriterion) new AttributesCriterion
+ {
+ AttributeString = tokens[i + 2],
+ Operator = c
+ };
+#endif
+ i += 2;
+ stateStack.Push(ParseState.CriterionDone);
+ }
+ break;
+
+ case "":
+ // NOP
+ stateStack.Push(ParseState.Whitespace);
+ break;
+
+ default:
+ throw new ArgumentException("'" + tokens[i] + "'");
+ }
+
+ state = stateStack.Peek();
+ if (state == ParseState.CriterionDone)
+ {
+ stateStack.Pop();
+ if (stateStack.Peek() == ParseState.ConjunctionPending)
+ {
+ while (stateStack.Peek() == ParseState.ConjunctionPending)
+ {
+ var cc = critStack.Pop() as CompoundCriterion;
+ cc.Right = current;
+ current = cc; // mark the parent as current (walk up the tree)
+ stateStack.Pop(); // the conjunction is no longer pending
+
+ state = stateStack.Pop();
+ if (state != ParseState.CriterionDone)
+ throw new ArgumentException("??");
+ }
+ }
+ else stateStack.Push(ParseState.CriterionDone); // not sure?
+ }
+
+ if (state == ParseState.Whitespace)
+ stateStack.Pop();
+ }
+
+ return current;
+ }
+
+
+ /// <summary>
+ /// Returns a string representation of the FileSelector object.
+ /// </summary>
+ /// <returns>The string representation of the boolean logic statement of the file
+ /// selection criteria for this instance. </returns>
+ public override String ToString()
+ {
+ return "FileSelector("+_Criterion.ToString()+")";
+ }
+
+
+ private bool Evaluate(string filename)
+ {
+ // dinoch - Thu, 11 Feb 2010 18:34
+ SelectorTrace("Evaluate({0})", filename);
+ bool result = _Criterion.Evaluate(filename);
+ return result;
+ }
+
+ [System.Diagnostics.Conditional("SelectorTrace")]
+ private void SelectorTrace(string format, params object[] args)
+ {
+ if (_Criterion != null && _Criterion.Verbose)
+ System.Console.WriteLine(format, args);
+ }
+
+ /// <summary>
+ /// Returns the names of the files in the specified directory
+ /// that fit the selection criteria specified in the FileSelector.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This is equivalent to calling <see cref="SelectFiles(String, bool)"/>
+ /// with recurseDirectories = false.
+ /// </remarks>
+ ///
+ /// <param name="directory">
+ /// The name of the directory over which to apply the FileSelector
+ /// criteria.
+ /// </param>
+ ///
+ /// <returns>
+ /// A collection of strings containing fully-qualified pathnames of files
+ /// that match the criteria specified in the FileSelector instance.
+ /// </returns>
+ public System.Collections.Generic.ICollection<String> SelectFiles(String directory)
+ {
+ return SelectFiles(directory, false);
+ }
+
+
+ /// <summary>
+ /// Returns the names of the files in the specified directory that fit the
+ /// selection criteria specified in the FileSelector, optionally recursing
+ /// through subdirectories.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This method applies the file selection criteria contained in the
+ /// FileSelector to the files contained in the given directory, and
+ /// returns the names of files that conform to the criteria.
+ /// </remarks>
+ ///
+ /// <param name="directory">
+ /// The name of the directory over which to apply the FileSelector
+ /// criteria.
+ /// </param>
+ ///
+ /// <param name="recurseDirectories">
+ /// Whether to recurse through subdirectories when applying the file
+ /// selection criteria.
+ /// </param>
+ ///
+ /// <returns>
+ /// A collection of strings containing fully-qualified pathnames of files
+ /// that match the criteria specified in the FileSelector instance.
+ /// </returns>
+ public System.Collections.ObjectModel.ReadOnlyCollection<String>
+ SelectFiles(String directory,
+ bool recurseDirectories)
+ {
+ if (_Criterion == null)
+ throw new ArgumentException("SelectionCriteria has not been set");
+
+ var list = new List<String>();
+ try
+ {
+ if (Directory.Exists(directory))
+ {
+ String[] filenames = Directory.GetFiles(directory);
+
+ // add the files:
+ foreach (String filename in filenames)
+ {
+ if (Evaluate(filename))
+ list.Add(filename);
+ }
+
+ if (recurseDirectories)
+ {
+ // add the subdirectories:
+ String[] dirnames = Directory.GetDirectories(directory);
+ foreach (String dir in dirnames)
+ {
+ if (this.TraverseReparsePoints
+#if !SILVERLIGHT
+ || ((File.GetAttributes(dir) & FileAttributes.ReparsePoint) == 0)
+#endif
+ )
+ {
+ // workitem 10191
+ if (Evaluate(dir)) list.Add(dir);
+ list.AddRange(this.SelectFiles(dir, recurseDirectories));
+ }
+ }
+ }
+ }
+ }
+ // can get System.UnauthorizedAccessException here
+ catch (System.UnauthorizedAccessException)
+ {
+ }
+ catch (System.IO.IOException)
+ {
+ }
+
+ return list.AsReadOnly();
+ }
+ }
+
+
+
+ /// <summary>
+ /// Summary description for EnumUtil.
+ /// </summary>
+ internal sealed class EnumUtil
+ {
+ private EnumUtil() { }
+ /// <summary>
+ /// Returns the value of the DescriptionAttribute if the specified Enum
+ /// value has one. If not, returns the ToString() representation of the
+ /// Enum value.
+ /// </summary>
+ /// <param name="value">The Enum to get the description for</param>
+ /// <returns></returns>
+ internal static string GetDescription(System.Enum value)
+ {
+ FieldInfo fi = value.GetType().GetField(value.ToString());
+ var attributes = (DescriptionAttribute[])fi.GetCustomAttributes(typeof(DescriptionAttribute), false);
+ if (attributes.Length > 0)
+ return attributes[0].Description;
+ else
+ return value.ToString();
+ }
+
+ /// <summary>
+ /// Converts the string representation of the name or numeric value of one
+ /// or more enumerated constants to an equivalent enumerated object.
+ /// Note: use the DescriptionAttribute on enum values to enable this.
+ /// </summary>
+ /// <param name="enumType">The System.Type of the enumeration.</param>
+ /// <param name="stringRepresentation">
+ /// A string containing the name or value to convert.
+ /// </param>
+ /// <returns></returns>
+ internal static object Parse(Type enumType, string stringRepresentation)
+ {
+ return Parse(enumType, stringRepresentation, false);
+ }
+
+
+#if SILVERLIGHT
+ internal static System.Enum[] GetEnumValues(Type type)
+ {
+ if (!type.IsEnum)
+ throw new ArgumentException("not an enum");
+
+ return (
+ from field in type.GetFields(BindingFlags.Public | BindingFlags.Static)
+ where field.IsLiteral
+ select (System.Enum)field.GetValue(null)
+ ).ToArray();
+ }
+
+ internal static string[] GetEnumStrings<T>()
+ {
+ var type = typeof(T);
+ if (!type.IsEnum)
+ throw new ArgumentException("not an enum");
+
+ return (
+ from field in type.GetFields(BindingFlags.Public | BindingFlags.Static)
+ where field.IsLiteral
+ select field.Name
+ ).ToArray();
+ }
+#endif
+
+ /// <summary>
+ /// Converts the string representation of the name or numeric value of one
+ /// or more enumerated constants to an equivalent enumerated object. A
+ /// parameter specified whether the operation is case-sensitive. Note:
+ /// use the DescriptionAttribute on enum values to enable this.
+ /// </summary>
+ /// <param name="enumType">The System.Type of the enumeration.</param>
+ /// <param name="stringRepresentation">
+ /// A string containing the name or value to convert.
+ /// </param>
+ /// <param name="ignoreCase">
+ /// Whether the operation is case-sensitive or not.</param>
+ /// <returns></returns>
+ internal static object Parse(Type enumType, string stringRepresentation, bool ignoreCase)
+ {
+ if (ignoreCase)
+ stringRepresentation = stringRepresentation.ToLower();
+
+#if SILVERLIGHT
+ foreach (System.Enum enumVal in GetEnumValues(enumType))
+#else
+ foreach (System.Enum enumVal in System.Enum.GetValues(enumType))
+#endif
+ {
+ string description = GetDescription(enumVal);
+ if (ignoreCase)
+ description = description.ToLower();
+ if (description == stringRepresentation)
+ return enumVal;
+ }
+
+ return System.Enum.Parse(enumType, stringRepresentation, ignoreCase);
+ }
+ }
+
+
+#if DEMO
+ internal class DemonstrateFileSelector
+ {
+ private string _directory;
+ private bool _recurse;
+ private bool _traverse;
+ private bool _verbose;
+ private string _selectionCriteria;
+ private FileSelector f;
+
+ public DemonstrateFileSelector()
+ {
+ this._directory = ".";
+ this._recurse = true;
+ }
+
+ public DemonstrateFileSelector(string[] args) : this()
+ {
+ for (int i = 0; i < args.Length; i++)
+ {
+ switch(args[i])
+ {
+ case"-?":
+ Usage();
+ Environment.Exit(0);
+ break;
+ case "-d":
+ i++;
+ if (args.Length <= i)
+ throw new ArgumentException("-directory");
+ this._directory = args[i];
+ break;
+ case "-norecurse":
+ this._recurse = false;
+ break;
+
+ case "-j-":
+ this._traverse = false;
+ break;
+
+ case "-j+":
+ this._traverse = true;
+ break;
+
+ case "-v":
+ this._verbose = true;
+ break;
+
+ default:
+ if (this._selectionCriteria != null)
+ throw new ArgumentException(args[i]);
+ this._selectionCriteria = args[i];
+ break;
+ }
+
+ if (this._selectionCriteria != null)
+ this.f = new FileSelector(this._selectionCriteria);
+ }
+ }
+
+
+ internal static void Main(string[] args)
+ {
+ try
+ {
+ Console.WriteLine();
+ new DemonstrateFileSelector(args).Run();
+ }
+ catch (Exception exc1)
+ {
+ Console.WriteLine("Exception: {0}", exc1.ToString());
+ Usage();
+ }
+ }
+
+
+ public void Run()
+ {
+ if (this.f == null)
+ this.f = new FileSelector("name = *.jpg AND (size > 1000 OR atime < 2009-02-14-01:00:00)");
+
+ this.f.TraverseReparsePoints = _traverse;
+ this.f.Verbose = this._verbose;
+ Console.WriteLine();
+ Console.WriteLine(new String(':', 88));
+ Console.WriteLine("Selecting files:\n" + this.f.ToString());
+ var files = this.f.SelectFiles(this._directory, this._recurse);
+ if (files.Count == 0)
+ {
+ Console.WriteLine("no files.");
+ }
+ else
+ {
+ Console.WriteLine("files: {0}", files.Count);
+ foreach (string file in files)
+ {
+ Console.WriteLine(" " + file);
+ }
+ }
+ }
+
+ internal static void Usage()
+ {
+ Console.WriteLine("FileSelector: select files based on selection criteria.\n");
+ Console.WriteLine("Usage:\n FileSelector <selectionCriteria> [options]\n" +
+ "\n" +
+ " -d <dir> directory to select from (Default .)\n" +
+ " -norecurse don't recurse into subdirs\n" +
+ " -j- don't traverse junctions\n" +
+ " -v verbose output\n");
+ }
+ }
+
+#endif
+
+
+
+}
+
+
--- /dev/null
+// OffsetStream.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2009-August-27 12:50:35>
+//
+// ------------------------------------------------------------------
+//
+// This module defines logic for handling reading of zip archives embedded
+// into larger streams. The initial position of the stream serves as
+// the base offset for all future Seek() operations.
+//
+// ------------------------------------------------------------------
+
+
+using System;
+using System.IO;
+
+namespace Ionic.Zip
+{
+ internal class OffsetStream : System.IO.Stream, System.IDisposable
+ {
+ private Int64 _originalPosition;
+ private Stream _innerStream;
+
+ public OffsetStream(Stream s)
+ : base()
+ {
+ _originalPosition = s.Position;
+ _innerStream = s;
+ }
+
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ return _innerStream.Read(buffer, offset, count);
+ }
+
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ throw new NotImplementedException();
+ }
+
+ public override bool CanRead
+ {
+ get { return _innerStream.CanRead; }
+ }
+
+ public override bool CanSeek
+ {
+ get { return _innerStream.CanSeek; }
+ }
+
+ public override bool CanWrite
+ {
+ get { return false; }
+ }
+
+ public override void Flush()
+ {
+ _innerStream.Flush();
+ }
+
+ public override long Length
+ {
+ get
+ {
+ return _innerStream.Length;
+ }
+ }
+
+ public override long Position
+ {
+ get { return _innerStream.Position - _originalPosition; }
+ set { _innerStream.Position = _originalPosition + value; }
+ }
+
+
+ public override long Seek(long offset, System.IO.SeekOrigin origin)
+ {
+ return _innerStream.Seek(_originalPosition + offset, origin) - _originalPosition;
+ }
+
+
+ public override void SetLength(long value)
+ {
+ throw new NotImplementedException();
+ }
+
+ void IDisposable.Dispose()
+ {
+ Close();
+ }
+
+ public override void Close()
+ {
+ base.Close();
+ }
+
+ }
+
+}
\ No newline at end of file
--- /dev/null
+// Shared.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2006-2011 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// Last Saved: <2011-August-02 19:41:01>
+//
+// ------------------------------------------------------------------
+//
+// This module defines some shared utility classes and methods.
+//
+// Created: Tue, 27 Mar 2007 15:30
+//
+
+using System;
+using System.IO;
+using System.Security.Permissions;
+
+namespace Ionic.Zip
+{
+ /// <summary>
+ /// Collects general purpose utility methods.
+ /// </summary>
+ internal static class SharedUtilities
+ {
+ /// private null constructor
+ //private SharedUtilities() { }
+
+ // workitem 8423
+ internal static Int64 GetFileLength(string fileName)
+ {
+ if (!File.Exists(fileName))
+ throw new System.IO.FileNotFoundException(fileName);
+
+ long fileLength = 0L;
+ FileShare fs = FileShare.ReadWrite;
+#if !NETCF
+ // FileShare.Delete is not defined for the Compact Framework
+ fs |= FileShare.Delete;
+#endif
+ using (var s = File.Open(fileName, FileMode.Open, FileAccess.Read, fs))
+ {
+ fileLength = s.Length;
+ }
+ return fileLength;
+ }
+
+
+ [System.Diagnostics.Conditional("NETCF")]
+ internal static void Workaround_Ladybug318918(Stream s)
+ {
+ // This is a workaround for this issue:
+ // https://connect.microsoft.com/VisualStudio/feedback/details/318918
+ // It's required only on NETCF.
+ s.Flush();
+ }
+
+
+#if LEGACY
+ /// <summary>
+ /// Round the given DateTime value to an even second value.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Round up in the case of an odd second value. The rounding does not consider
+ /// fractional seconds.
+ /// </para>
+ /// <para>
+ /// This is useful because the Zip spec allows storage of time only to the nearest
+ /// even second. So if you want to compare the time of an entry in the archive with
+ /// it's actual time in the filesystem, you need to round the actual filesystem
+ /// time, or use a 2-second threshold for the comparison.
+ /// </para>
+ /// <para>
+ /// This is most nautrally an extension method for the DateTime class but this
+ /// library is built for .NET 2.0, not for .NET 3.5; This means extension methods
+ /// are a no-no.
+ /// </para>
+ /// </remarks>
+ /// <param name="source">The DateTime value to round</param>
+ /// <returns>The ruonded DateTime value</returns>
+ internal static DateTime RoundToEvenSecond(DateTime source)
+ {
+ // round to nearest second:
+ if ((source.Second % 2) == 1)
+ source += new TimeSpan(0, 0, 1);
+
+ DateTime dtRounded = new DateTime(source.Year, source.Month, source.Day, source.Hour, source.Minute, source.Second);
+ //if (source.Millisecond >= 500) dtRounded = dtRounded.AddSeconds(1);
+ return dtRounded;
+ }
+#endif
+
+#if YOU_LIKE_REDUNDANT_CODE
+ internal static string NormalizePath(string path)
+ {
+ // remove leading single dot slash
+ if (path.StartsWith(".\\")) path = path.Substring(2);
+
+ // remove intervening dot-slash
+ path = path.Replace("\\.\\", "\\");
+
+ // remove double dot when preceded by a directory name
+ var re = new System.Text.RegularExpressions.Regex(@"^(.*\\)?([^\\\.]+\\\.\.\\)(.+)$");
+ path = re.Replace(path, "$1$3");
+ return path;
+ }
+#endif
+
+ private static System.Text.RegularExpressions.Regex doubleDotRegex1 =
+ new System.Text.RegularExpressions.Regex(@"^(.*/)?([^/\\.]+/\\.\\./)(.+)$");
+
+ private static string SimplifyFwdSlashPath(string path)
+ {
+ if (path.StartsWith("./")) path = path.Substring(2);
+ path = path.Replace("/./", "/");
+
+ // Replace foo/anything/../bar with foo/bar
+ path = doubleDotRegex1.Replace(path, "$1$3");
+ return path;
+ }
+
+
+ /// <summary>
+ /// Utility routine for transforming path names from filesystem format (on Windows that means backslashes) to
+ /// a format suitable for use within zipfiles. This means trimming the volume letter and colon (if any) And
+ /// swapping backslashes for forward slashes.
+ /// </summary>
+ /// <param name="pathName">source path.</param>
+ /// <returns>transformed path</returns>
+ internal static string NormalizePathForUseInZipFile(string pathName)
+ {
+ // boundary case
+ if (String.IsNullOrEmpty(pathName)) return pathName;
+
+ // trim volume if necessary
+ if ((pathName.Length >= 2) && ((pathName[1] == ':') && (pathName[2] == '\\')))
+ pathName = pathName.Substring(3);
+
+ // swap slashes
+ pathName = pathName.Replace('\\', '/');
+
+ // trim all leading slashes
+ while (pathName.StartsWith("/")) pathName = pathName.Substring(1);
+
+ return SimplifyFwdSlashPath(pathName);
+ }
+
+
+ static System.Text.Encoding ibm437 = System.Text.Encoding.GetEncoding("IBM437");
+ static System.Text.Encoding utf8 = System.Text.Encoding.GetEncoding("UTF-8");
+
+ internal static byte[] StringToByteArray(string value, System.Text.Encoding encoding)
+ {
+ byte[] a = encoding.GetBytes(value);
+ return a;
+ }
+ internal static byte[] StringToByteArray(string value)
+ {
+ return StringToByteArray(value, ibm437);
+ }
+
+ //internal static byte[] Utf8StringToByteArray(string value)
+ //{
+ // return StringToByteArray(value, utf8);
+ //}
+
+ //internal static string StringFromBuffer(byte[] buf, int maxlength)
+ //{
+ // return StringFromBuffer(buf, maxlength, ibm437);
+ //}
+
+ internal static string Utf8StringFromBuffer(byte[] buf)
+ {
+ return StringFromBuffer(buf, utf8);
+ }
+
+ internal static string StringFromBuffer(byte[] buf, System.Text.Encoding encoding)
+ {
+ // this form of the GetString() method is required for .NET CF compatibility
+ string s = encoding.GetString(buf, 0, buf.Length);
+ return s;
+ }
+
+
+ internal static int ReadSignature(System.IO.Stream s)
+ {
+ int x = 0;
+ try { x = _ReadFourBytes(s, "n/a"); }
+ catch (BadReadException) { }
+ return x;
+ }
+
+
+ internal static int ReadEntrySignature(System.IO.Stream s)
+ {
+ // handle the case of ill-formatted zip archives - includes a data descriptor
+ // when none is expected.
+ int x = 0;
+ try
+ {
+ x = _ReadFourBytes(s, "n/a");
+ if (x == ZipConstants.ZipEntryDataDescriptorSignature)
+ {
+ // advance past data descriptor - 12 bytes if not zip64
+ s.Seek(12, SeekOrigin.Current);
+ // workitem 10178
+ Workaround_Ladybug318918(s);
+ x = _ReadFourBytes(s, "n/a");
+ if (x != ZipConstants.ZipEntrySignature)
+ {
+ // Maybe zip64 was in use for the prior entry.
+ // Therefore, skip another 8 bytes.
+ s.Seek(8, SeekOrigin.Current);
+ // workitem 10178
+ Workaround_Ladybug318918(s);
+ x = _ReadFourBytes(s, "n/a");
+ if (x != ZipConstants.ZipEntrySignature)
+ {
+ // seek back to the first spot
+ s.Seek(-24, SeekOrigin.Current);
+ // workitem 10178
+ Workaround_Ladybug318918(s);
+ x = _ReadFourBytes(s, "n/a");
+ }
+ }
+ }
+ }
+ catch (BadReadException) { }
+ return x;
+ }
+
+
+ internal static int ReadInt(System.IO.Stream s)
+ {
+ return _ReadFourBytes(s, "Could not read block - no data! (position 0x{0:X8})");
+ }
+
+ private static int _ReadFourBytes(System.IO.Stream s, string message)
+ {
+ int n = 0;
+ byte[] block = new byte[4];
+#if NETCF
+ // workitem 9181
+ // Reading here in NETCF sometimes reads "backwards". Seems to happen for
+ // larger files. Not sure why. Maybe an error in caching. If the data is:
+ //
+ // 00100210: 9efa 0f00 7072 6f6a 6563 742e 6963 7750 ....project.icwP
+ // 00100220: 4b05 0600 0000 0006 0006 0091 0100 008e K...............
+ // 00100230: 0010 0000 00 .....
+ //
+ // ...and the stream Position is 10021F, then a Read of 4 bytes is returning
+ // 50776369, instead of 06054b50. This seems to happen the 2nd time Read()
+ // is called from that Position..
+ //
+ // submitted to connect.microsoft.com
+ // https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=318918#tabs
+ //
+ for (int i = 0; i < block.Length; i++)
+ {
+ n+= s.Read(block, i, 1);
+ }
+#else
+ n = s.Read(block, 0, block.Length);
+#endif
+ if (n != block.Length) throw new BadReadException(String.Format(message, s.Position));
+ int data = unchecked((((block[3] * 256 + block[2]) * 256) + block[1]) * 256 + block[0]);
+ return data;
+ }
+
+
+
+ /// <summary>
+ /// Finds a signature in the zip stream. This is useful for finding
+ /// the end of a zip entry, for example, or the beginning of the next ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Scans through 64k at a time.
+ /// </para>
+ ///
+ /// <para>
+ /// If the method fails to find the requested signature, the stream Position
+ /// after completion of this method is unchanged. If the method succeeds in
+ /// finding the requested signature, the stream position after completion is
+ /// direct AFTER the signature found in the stream.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="stream">The stream to search</param>
+ /// <param name="SignatureToFind">The 4-byte signature to find</param>
+ /// <returns>The number of bytes read</returns>
+ internal static long FindSignature(System.IO.Stream stream, int SignatureToFind)
+ {
+ long startingPosition = stream.Position;
+
+ int BATCH_SIZE = 65536; // 8192;
+ byte[] targetBytes = new byte[4];
+ targetBytes[0] = (byte)(SignatureToFind >> 24);
+ targetBytes[1] = (byte)((SignatureToFind & 0x00FF0000) >> 16);
+ targetBytes[2] = (byte)((SignatureToFind & 0x0000FF00) >> 8);
+ targetBytes[3] = (byte)(SignatureToFind & 0x000000FF);
+ byte[] batch = new byte[BATCH_SIZE];
+ int n = 0;
+ bool success = false;
+ do
+ {
+ n = stream.Read(batch, 0, batch.Length);
+ if (n != 0)
+ {
+ for (int i = 0; i < n; i++)
+ {
+ if (batch[i] == targetBytes[3])
+ {
+ long curPosition = stream.Position;
+ stream.Seek(i - n, System.IO.SeekOrigin.Current);
+ // workitem 10178
+ Workaround_Ladybug318918(stream);
+
+ // workitem 7711
+ int sig = ReadSignature(stream);
+
+ success = (sig == SignatureToFind);
+ if (!success)
+ {
+ stream.Seek(curPosition, System.IO.SeekOrigin.Begin);
+ // workitem 10178
+ Workaround_Ladybug318918(stream);
+ }
+ else
+ break; // out of for loop
+ }
+ }
+ }
+ else break;
+ if (success) break;
+
+ } while (true);
+
+ if (!success)
+ {
+ stream.Seek(startingPosition, System.IO.SeekOrigin.Begin);
+ // workitem 10178
+ Workaround_Ladybug318918(stream);
+ return -1; // or throw?
+ }
+
+ // subtract 4 for the signature.
+ long bytesRead = (stream.Position - startingPosition) - 4;
+
+ return bytesRead;
+ }
+
+
+ // If I have a time in the .NET environment, and I want to use it for
+ // SetWastWriteTime() etc, then I need to adjust it for Win32.
+ internal static DateTime AdjustTime_Reverse(DateTime time)
+ {
+ if (time.Kind == DateTimeKind.Utc) return time;
+ DateTime adjusted = time;
+ if (DateTime.Now.IsDaylightSavingTime() && !time.IsDaylightSavingTime())
+ adjusted = time - new System.TimeSpan(1, 0, 0);
+
+ else if (!DateTime.Now.IsDaylightSavingTime() && time.IsDaylightSavingTime())
+ adjusted = time + new System.TimeSpan(1, 0, 0);
+
+ return adjusted;
+ }
+
+#if NECESSARY
+ // If I read a time from a file with GetLastWriteTime() (etc), I need
+ // to adjust it for display in the .NET environment.
+ internal static DateTime AdjustTime_Forward(DateTime time)
+ {
+ if (time.Kind == DateTimeKind.Utc) return time;
+ DateTime adjusted = time;
+ if (DateTime.Now.IsDaylightSavingTime() && !time.IsDaylightSavingTime())
+ adjusted = time + new System.TimeSpan(1, 0, 0);
+
+ else if (!DateTime.Now.IsDaylightSavingTime() && time.IsDaylightSavingTime())
+ adjusted = time - new System.TimeSpan(1, 0, 0);
+
+ return adjusted;
+ }
+#endif
+
+
+ internal static DateTime PackedToDateTime(Int32 packedDateTime)
+ {
+ // workitem 7074 & workitem 7170
+ if (packedDateTime == 0xFFFF || packedDateTime == 0)
+ return new System.DateTime(1995, 1, 1, 0, 0, 0, 0); // return a fixed date when none is supplied.
+
+ Int16 packedTime = unchecked((Int16)(packedDateTime & 0x0000ffff));
+ Int16 packedDate = unchecked((Int16)((packedDateTime & 0xffff0000) >> 16));
+
+ int year = 1980 + ((packedDate & 0xFE00) >> 9);
+ int month = (packedDate & 0x01E0) >> 5;
+ int day = packedDate & 0x001F;
+
+ int hour = (packedTime & 0xF800) >> 11;
+ int minute = (packedTime & 0x07E0) >> 5;
+ //int second = packedTime & 0x001F;
+ int second = (packedTime & 0x001F) * 2;
+
+ // validation and error checking.
+ // this is not foolproof but will catch most errors.
+ if (second >= 60) { minute++; second = 0; }
+ if (minute >= 60) { hour++; minute = 0; }
+ if (hour >= 24) { day++; hour = 0; }
+
+ DateTime d = System.DateTime.Now;
+ bool success= false;
+ try
+ {
+ d = new System.DateTime(year, month, day, hour, minute, second, 0);
+ success= true;
+ }
+ catch (System.ArgumentOutOfRangeException)
+ {
+ if (year == 1980 && (month == 0 || day == 0))
+ {
+ try
+ {
+ d = new System.DateTime(1980, 1, 1, hour, minute, second, 0);
+ success= true;
+ }
+ catch (System.ArgumentOutOfRangeException)
+ {
+ try
+ {
+ d = new System.DateTime(1980, 1, 1, 0, 0, 0, 0);
+ success= true;
+ }
+ catch (System.ArgumentOutOfRangeException) { }
+
+ }
+ }
+ // workitem 8814
+ // my god, I can't believe how many different ways applications
+ // can mess up a simple date format.
+ else
+ {
+ try
+ {
+ while (year < 1980) year++;
+ while (year > 2030) year--;
+ while (month < 1) month++;
+ while (month > 12) month--;
+ while (day < 1) day++;
+ while (day > 28) day--;
+ while (minute < 0) minute++;
+ while (minute > 59) minute--;
+ while (second < 0) second++;
+ while (second > 59) second--;
+ d = new System.DateTime(year, month, day, hour, minute, second, 0);
+ success= true;
+ }
+ catch (System.ArgumentOutOfRangeException) { }
+ }
+ }
+ if (!success)
+ {
+ string msg = String.Format("y({0}) m({1}) d({2}) h({3}) m({4}) s({5})", year, month, day, hour, minute, second);
+ throw new ZipException(String.Format("Bad date/time format in the zip file. ({0})", msg));
+
+ }
+ // workitem 6191
+ //d = AdjustTime_Reverse(d);
+ d = DateTime.SpecifyKind(d, DateTimeKind.Local);
+ return d;
+ }
+
+
+ internal
+ static Int32 DateTimeToPacked(DateTime time)
+ {
+ // The time is passed in here only for purposes of writing LastModified to the
+ // zip archive. It should always be LocalTime, but we convert anyway. And,
+ // since the time is being written out, it needs to be adjusted.
+
+ time = time.ToLocalTime();
+ // workitem 7966
+ //time = AdjustTime_Forward(time);
+
+ // see http://www.vsft.com/hal/dostime.htm for the format
+ UInt16 packedDate = (UInt16)((time.Day & 0x0000001F) | ((time.Month << 5) & 0x000001E0) | (((time.Year - 1980) << 9) & 0x0000FE00));
+ UInt16 packedTime = (UInt16)((time.Second / 2 & 0x0000001F) | ((time.Minute << 5) & 0x000007E0) | ((time.Hour << 11) & 0x0000F800));
+
+ Int32 result = (Int32)(((UInt32)(packedDate << 16)) | packedTime);
+ return result;
+ }
+
+
+ /// <summary>
+ /// Create a pseudo-random filename, suitable for use as a temporary
+ /// file, and open it.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// The System.IO.Path.GetRandomFileName() method is not available on
+ /// the Compact Framework, so this library provides its own substitute
+ /// on NETCF.
+ /// </para>
+ /// <para>
+ /// This method produces a filename of the form
+ /// DotNetZip-xxxxxxxx.tmp, where xxxxxxxx is replaced by randomly
+ /// chosen characters, and creates that file.
+ /// </para>
+ /// </remarks>
+ internal static void CreateAndOpenUniqueTempFile(string dir,
+ out Stream fs,
+ out string filename)
+ {
+ // workitem 9763
+ // http://dotnet.org.za/markn/archive/2006/04/15/51594.aspx
+ // try 3 times:
+ for (int i = 0; i < 3; i++)
+ {
+ try
+ {
+ filename = Path.Combine(dir, InternalGetTempFileName());
+ fs = new FileStream(filename, FileMode.CreateNew);
+ return;
+ }
+ catch (IOException)
+ {
+ if (i == 2) throw;
+ }
+ }
+ throw new IOException();
+ }
+
+#if NETCF || SILVERLIGHT
+ internal static string InternalGetTempFileName()
+ {
+ return "DotNetZip-" + GenerateRandomStringImpl(8,0) + ".tmp";
+ }
+
+ internal static string GenerateRandomStringImpl(int length, int delta)
+ {
+ bool WantMixedCase = (delta == 0);
+ System.Random rnd = new System.Random();
+
+ string result = "";
+ char[] a = new char[length];
+
+ for (int i = 0; i < length; i++)
+ {
+ // delta == 65 means uppercase
+ // delta == 97 means lowercase
+ if (WantMixedCase)
+ delta = (rnd.Next(2) == 0) ? 65 : 97;
+ a[i] = (char)(rnd.Next(26) + delta);
+ }
+
+ result = new System.String(a);
+ return result;
+ }
+#else
+ internal static string InternalGetTempFileName()
+ {
+ return "DotNetZip-" + Path.GetRandomFileName().Substring(0, 8) + ".tmp";
+ }
+
+#endif
+
+
+ /// <summary>
+ /// Workitem 7889: handle ERROR_LOCK_VIOLATION during read
+ /// </summary>
+ /// <remarks>
+ /// This could be gracefully handled with an extension attribute, but
+ /// This assembly is built for .NET 2.0, so I cannot use them.
+ /// </remarks>
+ internal static int ReadWithRetry(System.IO.Stream s, byte[] buffer, int offset, int count, string FileName)
+ {
+ int n = 0;
+ bool done = false;
+#if !NETCF && !SILVERLIGHT
+ int retries = 0;
+#endif
+ do
+ {
+ try
+ {
+ n = s.Read(buffer, offset, count);
+ done = true;
+ }
+#if NETCF || SILVERLIGHT
+ catch (System.IO.IOException)
+ {
+ throw;
+ }
+#else
+ catch (System.IO.IOException ioexc1)
+ {
+ // Check if we can call GetHRForException,
+ // which makes unmanaged code calls.
+ var p = new SecurityPermission(SecurityPermissionFlag.UnmanagedCode);
+ if (p.IsUnrestricted())
+ {
+ uint hresult = _HRForException(ioexc1);
+ if (hresult != 0x80070021) // ERROR_LOCK_VIOLATION
+ throw new System.IO.IOException(String.Format("Cannot read file {0}", FileName), ioexc1);
+ retries++;
+ if (retries > 10)
+ throw new System.IO.IOException(String.Format("Cannot read file {0}, at offset 0x{1:X8} after 10 retries", FileName, offset), ioexc1);
+
+ // max time waited on last retry = 250 + 10*550 = 5.75s
+ // aggregate time waited after 10 retries: 250 + 55*550 = 30.5s
+ System.Threading.Thread.Sleep(250 + retries * 550);
+ }
+ else
+ {
+ // The permission.Demand() failed. Therefore, we cannot call
+ // GetHRForException, and cannot do the subtle handling of
+ // ERROR_LOCK_VIOLATION. Just bail.
+ throw;
+ }
+ }
+#endif
+ }
+ while (!done);
+
+ return n;
+ }
+
+
+#if !NETCF
+ // workitem 8009
+ //
+ // This method must remain separate.
+ //
+ // Marshal.GetHRForException() is needed to do special exception handling for
+ // the read. But, that method requires UnmanagedCode permissions, and is marked
+ // with LinkDemand for UnmanagedCode. In an ASP.NET medium trust environment,
+ // where UnmanagedCode is restricted, will generate a SecurityException at the
+ // time of JIT of the method that calls a method that is marked with LinkDemand
+ // for UnmanagedCode. The SecurityException, if it is restricted, will occur
+ // when this method is JITed.
+ //
+ // The Marshal.GetHRForException() is factored out of ReadWithRetry in order to
+ // avoid the SecurityException at JIT compile time. Because _HRForException is
+ // called only when the UnmanagedCode is allowed. This means .NET never
+ // JIT-compiles this method when UnmanagedCode is disallowed, and thus never
+ // generates the JIT-compile time exception.
+ //
+#endif
+ private static uint _HRForException(System.Exception ex1)
+ {
+ return unchecked((uint)System.Runtime.InteropServices.Marshal.GetHRForException(ex1));
+ }
+
+ }
+
+
+
+ /// <summary>
+ /// A decorator stream. It wraps another stream, and performs bookkeeping
+ /// to keep track of the stream Position.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// In some cases, it is not possible to get the Position of a stream, let's
+ /// say, on a write-only output stream like ASP.NET's
+ /// <c>Response.OutputStream</c>, or on a different write-only stream
+ /// provided as the destination for the zip by the application. In this
+ /// case, programmers can use this counting stream to count the bytes read
+ /// or written.
+ /// </para>
+ /// <para>
+ /// Consider the scenario of an application that saves a self-extracting
+ /// archive (SFX), that uses a custom SFX stub.
+ /// </para>
+ /// <para>
+ /// Saving to a filesystem file, the application would open the
+ /// filesystem file (getting a <c>FileStream</c>), save the custom sfx stub
+ /// into it, and then call <c>ZipFile.Save()</c>, specifying the same
+ /// FileStream. <c>ZipFile.Save()</c> does the right thing for the zipentry
+ /// offsets, by inquiring the Position of the <c>FileStream</c> before writing
+ /// any data, and then adding that initial offset into any ZipEntry
+ /// offsets in the zip directory. Everything works fine.
+ /// </para>
+ /// <para>
+ /// Now suppose the application is an ASPNET application and it saves
+ /// directly to <c>Response.OutputStream</c>. It's not possible for DotNetZip to
+ /// inquire the <c>Position</c>, so the offsets for the SFX will be wrong.
+ /// </para>
+ /// <para>
+ /// The workaround is for the application to use this class to wrap
+ /// <c>HttpResponse.OutputStream</c>, then write the SFX stub and the ZipFile
+ /// into that wrapper stream. Because <c>ZipFile.Save()</c> can inquire the
+ /// <c>Position</c>, it will then do the right thing with the offsets.
+ /// </para>
+ /// </remarks>
+ internal class CountingStream : System.IO.Stream
+ {
+ // workitem 12374: this class is now public
+ private System.IO.Stream _s;
+ private Int64 _bytesWritten;
+ private Int64 _bytesRead;
+ private Int64 _initialOffset;
+
+ /// <summary>
+ /// The constructor.
+ /// </summary>
+ /// <param name="stream">The underlying stream</param>
+ public CountingStream(System.IO.Stream stream)
+ : base()
+ {
+ _s = stream;
+ try
+ {
+ _initialOffset = _s.Position;
+ }
+ catch
+ {
+ _initialOffset = 0L;
+ }
+ }
+
+ /// <summary>
+ /// Gets the wrapped stream.
+ /// </summary>
+ public Stream WrappedStream
+ {
+ get
+ {
+ return _s;
+ }
+ }
+
+ /// <summary>
+ /// The count of bytes written out to the stream.
+ /// </summary>
+ public Int64 BytesWritten
+ {
+ get { return _bytesWritten; }
+ }
+
+ /// <summary>
+ /// the count of bytes that have been read from the stream.
+ /// </summary>
+ public Int64 BytesRead
+ {
+ get { return _bytesRead; }
+ }
+
+ /// <summary>
+ /// Adjust the byte count on the stream.
+ /// </summary>
+ ///
+ /// <param name='delta'>
+ /// the number of bytes to subtract from the count.
+ /// </param>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Subtract delta from the count of bytes written to the stream.
+ /// This is necessary when seeking back, and writing additional data,
+ /// as happens in some cases when saving Zip files.
+ /// </para>
+ /// </remarks>
+ public void Adjust(Int64 delta)
+ {
+ _bytesWritten -= delta;
+ if (_bytesWritten < 0)
+ throw new InvalidOperationException();
+ if (_s as CountingStream != null)
+ ((CountingStream)_s).Adjust(delta);
+ }
+
+ /// <summary>
+ /// The read method.
+ /// </summary>
+ /// <param name="buffer">The buffer to hold the data read from the stream.</param>
+ /// <param name="offset">the offset within the buffer to copy the first byte read.</param>
+ /// <param name="count">the number of bytes to read.</param>
+ /// <returns>the number of bytes read, after decryption and decompression.</returns>
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ int n = _s.Read(buffer, offset, count);
+ _bytesRead += n;
+ return n;
+ }
+
+ /// <summary>
+ /// Write data into the stream.
+ /// </summary>
+ /// <param name="buffer">The buffer holding data to write to the stream.</param>
+ /// <param name="offset">the offset within that data array to find the first byte to write.</param>
+ /// <param name="count">the number of bytes to write.</param>
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ if (count == 0) return;
+ _s.Write(buffer, offset, count);
+ _bytesWritten += count;
+ }
+
+ /// <summary>
+ /// Whether the stream can be read.
+ /// </summary>
+ public override bool CanRead
+ {
+ get { return _s.CanRead; }
+ }
+
+ /// <summary>
+ /// Whether it is possible to call Seek() on the stream.
+ /// </summary>
+ public override bool CanSeek
+ {
+ get { return _s.CanSeek; }
+ }
+
+ /// <summary>
+ /// Whether it is possible to call Write() on the stream.
+ /// </summary>
+ public override bool CanWrite
+ {
+ get { return _s.CanWrite; }
+ }
+
+ /// <summary>
+ /// Flushes the underlying stream.
+ /// </summary>
+ public override void Flush()
+ {
+ _s.Flush();
+ }
+
+ /// <summary>
+ /// The length of the underlying stream.
+ /// </summary>
+ public override long Length
+ {
+ get { return _s.Length; } // bytesWritten??
+ }
+
+ /// <summary>
+ /// Returns the sum of number of bytes written, plus the initial
+ /// offset before writing.
+ /// </summary>
+ public long ComputedPosition
+ {
+ get { return _initialOffset + _bytesWritten; }
+ }
+
+
+ /// <summary>
+ /// The Position of the stream.
+ /// </summary>
+ public override long Position
+ {
+ get { return _s.Position; }
+ set
+ {
+ _s.Seek(value, System.IO.SeekOrigin.Begin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(_s);
+ }
+ }
+
+ /// <summary>
+ /// Seek in the stream.
+ /// </summary>
+ /// <param name="offset">the offset point to seek to</param>
+ /// <param name="origin">the reference point from which to seek</param>
+ /// <returns>The new position</returns>
+ public override long Seek(long offset, System.IO.SeekOrigin origin)
+ {
+ return _s.Seek(offset, origin);
+ }
+
+ /// <summary>
+ /// Set the length of the underlying stream. Be careful with this!
+ /// </summary>
+ ///
+ /// <param name='value'>the length to set on the underlying stream.</param>
+ public override void SetLength(long value)
+ {
+ _s.SetLength(value);
+ }
+ }
+
+
+}
--- /dev/null
+// ZipConstants.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2006, 2007, 2008, 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2009-August-27 23:22:32>
+//
+// ------------------------------------------------------------------
+//
+// This module defines a few constants that are used in the project.
+//
+// ------------------------------------------------------------------
+
+using System;
+
+namespace Ionic.Zip
+{
+ static class ZipConstants
+ {
+ public const UInt32 PackedToRemovableMedia = 0x30304b50;
+ public const UInt32 Zip64EndOfCentralDirectoryRecordSignature = 0x06064b50;
+ public const UInt32 Zip64EndOfCentralDirectoryLocatorSignature = 0x07064b50;
+ public const UInt32 EndOfCentralDirectorySignature = 0x06054b50;
+ public const int ZipEntrySignature = 0x04034b50;
+ public const int ZipEntryDataDescriptorSignature = 0x08074b50;
+ public const int SplitArchiveSignature = 0x08074b50;
+ public const int ZipDirEntrySignature = 0x02014b50;
+
+
+ // These are dictated by the Zip Spec.See APPNOTE.txt
+ public const int AesKeySize = 192; // 128, 192, 256
+ public const int AesBlockSize = 128; // ???
+
+ public const UInt16 AesAlgId128 = 0x660E;
+ public const UInt16 AesAlgId192 = 0x660F;
+ public const UInt16 AesAlgId256 = 0x6610;
+
+ }
+}
--- /dev/null
+// ZipCrypto.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2008, 2009, 2011 Dino Chiesa
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-July-28 06:30:59>
+//
+// ------------------------------------------------------------------
+//
+// This module provides the implementation for "traditional" Zip encryption.
+//
+// Created Tue Apr 15 17:39:56 2008
+//
+// ------------------------------------------------------------------
+
+using System;
+
+namespace Ionic.Zip
+{
+ /// <summary>
+ /// This class implements the "traditional" or "classic" PKZip encryption,
+ /// which today is considered to be weak. On the other hand it is
+ /// ubiquitous. This class is intended for use only by the DotNetZip
+ /// library.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Most uses of the DotNetZip library will not involve direct calls into
+ /// the ZipCrypto class. Instead, the ZipCrypto class is instantiated and
+ /// used by the ZipEntry() class when encryption or decryption on an entry
+ /// is employed. If for some reason you really wanted to use a weak
+ /// encryption algorithm in some other application, you might use this
+ /// library. But you would be much better off using one of the built-in
+ /// strong encryption libraries in the .NET Framework, like the AES
+ /// algorithm or SHA.
+ /// </remarks>
+ internal class ZipCrypto
+ {
+ /// <summary>
+ /// The default constructor for ZipCrypto.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This class is intended for internal use by the library only. It's
+ /// probably not useful to you. Seriously. Stop reading this
+ /// documentation. It's a waste of your time. Go do something else.
+ /// Check the football scores. Go get an ice cream with a friend.
+ /// Seriously.
+ /// </remarks>
+ ///
+ private ZipCrypto() { }
+
+ internal static ZipCrypto ForWrite(string password)
+ {
+ ZipCrypto z = new ZipCrypto();
+ if (password == null)
+ throw new BadPasswordException("This entry requires a password.");
+ z.InitCipher(password);
+ return z;
+ }
+
+
+ internal static ZipCrypto ForRead(string password, ZipEntry e)
+ {
+ System.IO.Stream s = e._archiveStream;
+ e._WeakEncryptionHeader = new byte[12];
+ byte[] eh = e._WeakEncryptionHeader;
+ ZipCrypto z = new ZipCrypto();
+
+ if (password == null)
+ throw new BadPasswordException("This entry requires a password.");
+
+ z.InitCipher(password);
+
+ ZipEntry.ReadWeakEncryptionHeader(s, eh);
+
+ // Decrypt the header. This has a side effect of "further initializing the
+ // encryption keys" in the traditional zip encryption.
+ byte[] DecryptedHeader = z.DecryptMessage(eh, eh.Length);
+
+ // CRC check
+ // According to the pkzip spec, the final byte in the decrypted header
+ // is the highest-order byte in the CRC. We check it here.
+ if (DecryptedHeader[11] != (byte)((e._Crc32 >> 24) & 0xff))
+ {
+ // In the case that bit 3 of the general purpose bit flag is set to
+ // indicate the presence of an 'Extended File Header' or a 'data
+ // descriptor' (signature 0x08074b50), the last byte of the decrypted
+ // header is sometimes compared with the high-order byte of the
+ // lastmodified time, rather than the high-order byte of the CRC, to
+ // verify the password.
+ //
+ // This is not documented in the PKWare Appnote.txt. It was
+ // discovered this by analysis of the Crypt.c source file in the
+ // InfoZip library http://www.info-zip.org/pub/infozip/
+ //
+ // The reason for this is that the CRC for a file cannot be known
+ // until the entire contents of the file have been streamed. This
+ // means a tool would have to read the file content TWICE in its
+ // entirety in order to perform PKZIP encryption - once to compute
+ // the CRC, and again to actually encrypt.
+ //
+ // This is so important for performance that using the timeblob as
+ // the verification should be the standard practice for DotNetZip
+ // when using PKZIP encryption. This implies that bit 3 must be
+ // set. The downside is that some tools still cannot cope with ZIP
+ // files that use bit 3. Therefore, DotNetZip DOES NOT force bit 3
+ // when PKZIP encryption is in use, and instead, reads the stream
+ // twice.
+ //
+
+ if ((e._BitField & 0x0008) != 0x0008)
+ {
+ throw new BadPasswordException("The password did not match.");
+ }
+ else if (DecryptedHeader[11] != (byte)((e._TimeBlob >> 8) & 0xff))
+ {
+ throw new BadPasswordException("The password did not match.");
+ }
+
+ // We have a good password.
+ }
+ else
+ {
+ // A-OK
+ }
+ return z;
+ }
+
+
+
+
+ /// <summary>
+ /// From AppNote.txt:
+ /// unsigned char decrypt_byte()
+ /// local unsigned short temp
+ /// temp :=- Key(2) | 2
+ /// decrypt_byte := (temp * (temp ^ 1)) bitshift-right 8
+ /// end decrypt_byte
+ /// </summary>
+ private byte MagicByte
+ {
+ get
+ {
+ UInt16 t = (UInt16)((UInt16)(_Keys[2] & 0xFFFF) | 2);
+ return (byte)((t * (t ^ 1)) >> 8);
+ }
+ }
+
+ // Decrypting:
+ // From AppNote.txt:
+ // loop for i from 0 to 11
+ // C := buffer(i) ^ decrypt_byte()
+ // update_keys(C)
+ // buffer(i) := C
+ // end loop
+
+
+ /// <summary>
+ /// Call this method on a cipher text to render the plaintext. You must
+ /// first initialize the cipher with a call to InitCipher.
+ /// </summary>
+ ///
+ /// <example>
+ /// <code>
+ /// var cipher = new ZipCrypto();
+ /// cipher.InitCipher(Password);
+ /// // Decrypt the header. This has a side effect of "further initializing the
+ /// // encryption keys" in the traditional zip encryption.
+ /// byte[] DecryptedMessage = cipher.DecryptMessage(EncryptedMessage);
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="cipherText">The encrypted buffer.</param>
+ /// <param name="length">
+ /// The number of bytes to encrypt.
+ /// Should be less than or equal to CipherText.Length.
+ /// </param>
+ ///
+ /// <returns>The plaintext.</returns>
+ public byte[] DecryptMessage(byte[] cipherText, int length)
+ {
+ if (cipherText == null)
+ throw new ArgumentNullException("cipherText");
+
+ if (length > cipherText.Length)
+ throw new ArgumentOutOfRangeException("length",
+ "Bad length during Decryption: the length parameter must be smaller than or equal to the size of the destination array.");
+
+ byte[] plainText = new byte[length];
+ for (int i = 0; i < length; i++)
+ {
+ byte C = (byte)(cipherText[i] ^ MagicByte);
+ UpdateKeys(C);
+ plainText[i] = C;
+ }
+ return plainText;
+ }
+
+ /// <summary>
+ /// This is the converse of DecryptMessage. It encrypts the plaintext
+ /// and produces a ciphertext.
+ /// </summary>
+ ///
+ /// <param name="plainText">The plain text buffer.</param>
+ ///
+ /// <param name="length">
+ /// The number of bytes to encrypt.
+ /// Should be less than or equal to plainText.Length.
+ /// </param>
+ ///
+ /// <returns>The ciphertext.</returns>
+ public byte[] EncryptMessage(byte[] plainText, int length)
+ {
+ if (plainText == null)
+ throw new ArgumentNullException("plaintext");
+
+ if (length > plainText.Length)
+ throw new ArgumentOutOfRangeException("length",
+ "Bad length during Encryption: The length parameter must be smaller than or equal to the size of the destination array.");
+
+ byte[] cipherText = new byte[length];
+ for (int i = 0; i < length; i++)
+ {
+ byte C = plainText[i];
+ cipherText[i] = (byte)(plainText[i] ^ MagicByte);
+ UpdateKeys(C);
+ }
+ return cipherText;
+ }
+
+
+ /// <summary>
+ /// This initializes the cipher with the given password.
+ /// See AppNote.txt for details.
+ /// </summary>
+ ///
+ /// <param name="passphrase">
+ /// The passphrase for encrypting or decrypting with this cipher.
+ /// </param>
+ ///
+ /// <remarks>
+ /// <code>
+ /// Step 1 - Initializing the encryption keys
+ /// -----------------------------------------
+ /// Start with these keys:
+ /// Key(0) := 305419896 (0x12345678)
+ /// Key(1) := 591751049 (0x23456789)
+ /// Key(2) := 878082192 (0x34567890)
+ ///
+ /// Then, initialize the keys with a password:
+ ///
+ /// loop for i from 0 to length(password)-1
+ /// update_keys(password(i))
+ /// end loop
+ ///
+ /// Where update_keys() is defined as:
+ ///
+ /// update_keys(char):
+ /// Key(0) := crc32(key(0),char)
+ /// Key(1) := Key(1) + (Key(0) bitwiseAND 000000ffH)
+ /// Key(1) := Key(1) * 134775813 + 1
+ /// Key(2) := crc32(key(2),key(1) rightshift 24)
+ /// end update_keys
+ ///
+ /// Where crc32(old_crc,char) is a routine that given a CRC value and a
+ /// character, returns an updated CRC value after applying the CRC-32
+ /// algorithm described elsewhere in this document.
+ ///
+ /// </code>
+ ///
+ /// <para>
+ /// After the keys are initialized, then you can use the cipher to
+ /// encrypt the plaintext.
+ /// </para>
+ ///
+ /// <para>
+ /// Essentially we encrypt the password with the keys, then discard the
+ /// ciphertext for the password. This initializes the keys for later use.
+ /// </para>
+ ///
+ /// </remarks>
+ public void InitCipher(string passphrase)
+ {
+ byte[] p = SharedUtilities.StringToByteArray(passphrase);
+ for (int i = 0; i < passphrase.Length; i++)
+ UpdateKeys(p[i]);
+ }
+
+
+ private void UpdateKeys(byte byteValue)
+ {
+ _Keys[0] = (UInt32)crc32.ComputeCrc32((int)_Keys[0], byteValue);
+ _Keys[1] = _Keys[1] + (byte)_Keys[0];
+ _Keys[1] = _Keys[1] * 0x08088405 + 1;
+ _Keys[2] = (UInt32)crc32.ComputeCrc32((int)_Keys[2], (byte)(_Keys[1] >> 24));
+ }
+
+ ///// <summary>
+ ///// The byte array representing the seed keys used.
+ ///// Get this after calling InitCipher. The 12 bytes represents
+ ///// what the zip spec calls the "EncryptionHeader".
+ ///// </summary>
+ //public byte[] KeyHeader
+ //{
+ // get
+ // {
+ // byte[] result = new byte[12];
+ // result[0] = (byte)(_Keys[0] & 0xff);
+ // result[1] = (byte)((_Keys[0] >> 8) & 0xff);
+ // result[2] = (byte)((_Keys[0] >> 16) & 0xff);
+ // result[3] = (byte)((_Keys[0] >> 24) & 0xff);
+ // result[4] = (byte)(_Keys[1] & 0xff);
+ // result[5] = (byte)((_Keys[1] >> 8) & 0xff);
+ // result[6] = (byte)((_Keys[1] >> 16) & 0xff);
+ // result[7] = (byte)((_Keys[1] >> 24) & 0xff);
+ // result[8] = (byte)(_Keys[2] & 0xff);
+ // result[9] = (byte)((_Keys[2] >> 8) & 0xff);
+ // result[10] = (byte)((_Keys[2] >> 16) & 0xff);
+ // result[11] = (byte)((_Keys[2] >> 24) & 0xff);
+ // return result;
+ // }
+ //}
+
+ // private fields for the crypto stuff:
+ private UInt32[] _Keys = { 0x12345678, 0x23456789, 0x34567890 };
+ private Ionic.Crc.CRC32 crc32 = new Ionic.Crc.CRC32();
+
+ }
+
+ internal enum CryptoMode
+ {
+ Encrypt,
+ Decrypt
+ }
+
+ /// <summary>
+ /// A Stream for reading and concurrently decrypting data from a zip file,
+ /// or for writing and concurrently encrypting data to a zip file.
+ /// </summary>
+ internal class ZipCipherStream : System.IO.Stream
+ {
+ private ZipCrypto _cipher;
+ private System.IO.Stream _s;
+ private CryptoMode _mode;
+
+ /// <summary> The constructor. </summary>
+ /// <param name="s">The underlying stream</param>
+ /// <param name="mode">To either encrypt or decrypt.</param>
+ /// <param name="cipher">The pre-initialized ZipCrypto object.</param>
+ public ZipCipherStream(System.IO.Stream s, ZipCrypto cipher, CryptoMode mode)
+ : base()
+ {
+ _cipher = cipher;
+ _s = s;
+ _mode = mode;
+ }
+
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ if (_mode == CryptoMode.Encrypt)
+ throw new NotSupportedException("This stream does not encrypt via Read()");
+
+ if (buffer == null)
+ throw new ArgumentNullException("buffer");
+
+ byte[] db = new byte[count];
+ int n = _s.Read(db, 0, count);
+ byte[] decrypted = _cipher.DecryptMessage(db, n);
+ for (int i = 0; i < n; i++)
+ {
+ buffer[offset + i] = decrypted[i];
+ }
+ return n;
+ }
+
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ if (_mode == CryptoMode.Decrypt)
+ throw new NotSupportedException("This stream does not Decrypt via Write()");
+
+ if (buffer == null)
+ throw new ArgumentNullException("buffer");
+
+ // workitem 7696
+ if (count == 0) return;
+
+ byte[] plaintext = null;
+ if (offset != 0)
+ {
+ plaintext = new byte[count];
+ for (int i = 0; i < count; i++)
+ {
+ plaintext[i] = buffer[offset + i];
+ }
+ }
+ else plaintext = buffer;
+
+ byte[] encrypted = _cipher.EncryptMessage(plaintext, count);
+ _s.Write(encrypted, 0, encrypted.Length);
+ }
+
+
+ public override bool CanRead
+ {
+ get { return (_mode == CryptoMode.Decrypt); }
+ }
+ public override bool CanSeek
+ {
+ get { return false; }
+ }
+
+ public override bool CanWrite
+ {
+ get { return (_mode == CryptoMode.Encrypt); }
+ }
+
+ public override void Flush()
+ {
+ //throw new NotSupportedException();
+ }
+
+ public override long Length
+ {
+ get { throw new NotSupportedException(); }
+ }
+
+ public override long Position
+ {
+ get { throw new NotSupportedException(); }
+ set { throw new NotSupportedException(); }
+ }
+ public override long Seek(long offset, System.IO.SeekOrigin origin)
+ {
+ throw new NotSupportedException();
+ }
+
+ public override void SetLength(long value)
+ {
+ throw new NotSupportedException();
+ }
+ }
+}
--- /dev/null
+// ZipDirEntry.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2006-2011 Dino Chiesa .
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-July-11 12:03:03>
+//
+// ------------------------------------------------------------------
+//
+// This module defines members of the ZipEntry class for reading the
+// Zip file central directory.
+//
+// Created: Tue, 27 Mar 2007 15:30
+//
+// ------------------------------------------------------------------
+
+
+using System;
+using System.Collections.Generic;
+
+namespace Ionic.Zip
+{
+
+ partial class ZipEntry
+ {
+ /// <summary>
+ /// True if the referenced entry is a directory.
+ /// </summary>
+ internal bool AttributesIndicateDirectory
+ {
+ get { return ((_InternalFileAttrs == 0) && ((_ExternalFileAttrs & 0x0010) == 0x0010)); }
+ }
+
+
+ internal void ResetDirEntry()
+ {
+ // __FileDataPosition is the position of the file data for an entry.
+ // It is _RelativeOffsetOfLocalHeader + size of local header.
+
+ // We cannot know the __FileDataPosition until we read the local
+ // header.
+
+ // The local header is not necessarily the same length as the record
+ // in the central directory.
+
+ // Set to -1, to indicate we need to read this later.
+ this.__FileDataPosition = -1;
+
+ // set _LengthOfHeader to 0, to indicate we need to read later.
+ this._LengthOfHeader = 0;
+ }
+
+ /// <summary>
+ /// Provides a human-readable string with information about the ZipEntry.
+ /// </summary>
+ public string Info
+ {
+ get
+ {
+ var builder = new System.Text.StringBuilder();
+ builder
+ .Append(string.Format(" ZipEntry: {0}\n", this.FileName))
+ .Append(string.Format(" Version Made By: {0}\n", this._VersionMadeBy))
+ .Append(string.Format(" Needed to extract: {0}\n", this.VersionNeeded));
+
+ if (this._IsDirectory)
+ builder.Append(" Entry type: directory\n");
+ else
+ {
+ builder.Append(string.Format(" File type: {0}\n", this._IsText? "text":"binary"))
+ .Append(string.Format(" Compression: {0}\n", this.CompressionMethod))
+ .Append(string.Format(" Compressed: 0x{0:X}\n", this.CompressedSize))
+ .Append(string.Format(" Uncompressed: 0x{0:X}\n", this.UncompressedSize))
+ .Append(string.Format(" CRC32: 0x{0:X8}\n", this._Crc32));
+ }
+ builder.Append(string.Format(" Disk Number: {0}\n", this._diskNumber));
+ if (this._RelativeOffsetOfLocalHeader > 0xFFFFFFFF)
+ builder
+ .Append(string.Format(" Relative Offset: 0x{0:X16}\n", this._RelativeOffsetOfLocalHeader));
+ else
+ builder
+ .Append(string.Format(" Relative Offset: 0x{0:X8}\n", this._RelativeOffsetOfLocalHeader));
+
+ builder
+ .Append(string.Format(" Bit Field: 0x{0:X4}\n", this._BitField))
+ .Append(string.Format(" Encrypted?: {0}\n", this._sourceIsEncrypted))
+ .Append(string.Format(" Timeblob: 0x{0:X8}\n", this._TimeBlob))
+ .Append(string.Format(" Time: {0}\n", Ionic.Zip.SharedUtilities.PackedToDateTime(this._TimeBlob)));
+
+ builder.Append(string.Format(" Is Zip64?: {0}\n", this._InputUsesZip64));
+ if (!string.IsNullOrEmpty(this._Comment))
+ {
+ builder.Append(string.Format(" Comment: {0}\n", this._Comment));
+ }
+ builder.Append("\n");
+ return builder.ToString();
+ }
+ }
+
+
+ // workitem 10330
+ private class CopyHelper
+ {
+ private static System.Text.RegularExpressions.Regex re =
+ new System.Text.RegularExpressions.Regex(" \\(copy (\\d+)\\)$");
+
+ private static int callCount = 0;
+
+ internal static string AppendCopyToFileName(string f)
+ {
+ callCount++;
+ if (callCount > 25)
+ throw new OverflowException("overflow while creating filename");
+
+ int n = 1;
+ int r = f.LastIndexOf(".");
+
+ if (r == -1)
+ {
+ // there is no extension
+ System.Text.RegularExpressions.Match m = re.Match(f);
+ if (m.Success)
+ {
+ n = Int32.Parse(m.Groups[1].Value) + 1;
+ string copy = String.Format(" (copy {0})", n);
+ f = f.Substring(0, m.Index) + copy;
+ }
+ else
+ {
+ string copy = String.Format(" (copy {0})", n);
+ f = f + copy;
+ }
+ }
+ else
+ {
+ //System.Console.WriteLine("HasExtension");
+ System.Text.RegularExpressions.Match m = re.Match(f.Substring(0, r));
+ if (m.Success)
+ {
+ n = Int32.Parse(m.Groups[1].Value) + 1;
+ string copy = String.Format(" (copy {0})", n);
+ f = f.Substring(0, m.Index) + copy + f.Substring(r);
+ }
+ else
+ {
+ string copy = String.Format(" (copy {0})", n);
+ f = f.Substring(0, r) + copy + f.Substring(r);
+ }
+
+ //System.Console.WriteLine("returning f({0})", f);
+ }
+ return f;
+ }
+ }
+
+
+
+ /// <summary>
+ /// Reads one entry from the zip directory structure in the zip file.
+ /// </summary>
+ ///
+ /// <param name="zf">
+ /// The zipfile for which a directory entry will be read. From this param, the
+ /// method gets the ReadStream and the expected text encoding
+ /// (ProvisionalAlternateEncoding) which is used if the entry is not marked
+ /// UTF-8.
+ /// </param>
+ ///
+ /// <param name="previouslySeen">
+ /// a list of previously seen entry names; used to prevent duplicates.
+ /// </param>
+ ///
+ /// <returns>the entry read from the archive.</returns>
+ internal static ZipEntry ReadDirEntry(ZipFile zf,
+ Dictionary<String,Object> previouslySeen)
+ {
+ System.IO.Stream s = zf.ReadStream;
+ System.Text.Encoding expectedEncoding = (zf.AlternateEncodingUsage == ZipOption.Always)
+ ? zf.AlternateEncoding
+ : ZipFile.DefaultEncoding;
+
+ int signature = Ionic.Zip.SharedUtilities.ReadSignature(s);
+ // return null if this is not a local file header signature
+ if (IsNotValidZipDirEntrySig(signature))
+ {
+ s.Seek(-4, System.IO.SeekOrigin.Current);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(s);
+
+ // Getting "not a ZipDirEntry signature" here is not always wrong or an
+ // error. This can happen when walking through a zipfile. After the
+ // last ZipDirEntry, we expect to read an
+ // EndOfCentralDirectorySignature. When we get this is how we know
+ // we've reached the end of the central directory.
+ if (signature != ZipConstants.EndOfCentralDirectorySignature &&
+ signature != ZipConstants.Zip64EndOfCentralDirectoryRecordSignature &&
+ signature != ZipConstants.ZipEntrySignature // workitem 8299
+ )
+ {
+ throw new BadReadException(String.Format(" Bad signature (0x{0:X8}) at position 0x{1:X8}", signature, s.Position));
+ }
+ return null;
+ }
+
+ int bytesRead = 42 + 4;
+ byte[] block = new byte[42];
+ int n = s.Read(block, 0, block.Length);
+ if (n != block.Length) return null;
+
+ int i = 0;
+ ZipEntry zde = new ZipEntry();
+ zde.AlternateEncoding = expectedEncoding;
+ zde._Source = ZipEntrySource.ZipFile;
+ zde._container = new ZipContainer(zf);
+
+ unchecked
+ {
+ zde._VersionMadeBy = (short)(block[i++] + block[i++] * 256);
+ zde._VersionNeeded = (short)(block[i++] + block[i++] * 256);
+ zde._BitField = (short)(block[i++] + block[i++] * 256);
+ zde._CompressionMethod = (Int16)(block[i++] + block[i++] * 256);
+ zde._TimeBlob = block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256;
+ zde._LastModified = Ionic.Zip.SharedUtilities.PackedToDateTime(zde._TimeBlob);
+ zde._timestamp |= ZipEntryTimestamp.DOS;
+
+ zde._Crc32 = block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256;
+ zde._CompressedSize = (uint)(block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256);
+ zde._UncompressedSize = (uint)(block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256);
+ }
+
+ // preserve
+ zde._CompressionMethod_FromZipFile = zde._CompressionMethod;
+
+ zde._filenameLength = (short)(block[i++] + block[i++] * 256);
+ zde._extraFieldLength = (short)(block[i++] + block[i++] * 256);
+ zde._commentLength = (short)(block[i++] + block[i++] * 256);
+ zde._diskNumber = (UInt32)(block[i++] + block[i++] * 256);
+
+ zde._InternalFileAttrs = (short)(block[i++] + block[i++] * 256);
+ zde._ExternalFileAttrs = block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256;
+
+ zde._RelativeOffsetOfLocalHeader = (uint)(block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256);
+
+ // workitem 7801
+ zde.IsText = ((zde._InternalFileAttrs & 0x01) == 0x01);
+
+ block = new byte[zde._filenameLength];
+ n = s.Read(block, 0, block.Length);
+ bytesRead += n;
+ if ((zde._BitField & 0x0800) == 0x0800)
+ {
+ // UTF-8 is in use
+ zde._FileNameInArchive = Ionic.Zip.SharedUtilities.Utf8StringFromBuffer(block);
+ }
+ else
+ {
+ zde._FileNameInArchive = Ionic.Zip.SharedUtilities.StringFromBuffer(block, expectedEncoding);
+ }
+
+ // workitem 10330
+ // insure unique entry names
+ while (previouslySeen.ContainsKey(zde._FileNameInArchive))
+ {
+ zde._FileNameInArchive = CopyHelper.AppendCopyToFileName(zde._FileNameInArchive);
+ zde._metadataChanged = true;
+ }
+
+ if (zde.AttributesIndicateDirectory)
+ zde.MarkAsDirectory(); // may append a slash to filename if nec.
+ // workitem 6898
+ else if (zde._FileNameInArchive.EndsWith("/")) zde.MarkAsDirectory();
+
+ zde._CompressedFileDataSize = zde._CompressedSize;
+ if ((zde._BitField & 0x01) == 0x01)
+ {
+ // this may change after processing the Extra field
+ zde._Encryption_FromZipFile = zde._Encryption =
+ EncryptionAlgorithm.PkzipWeak;
+ zde._sourceIsEncrypted = true;
+ }
+
+ if (zde._extraFieldLength > 0)
+ {
+ zde._InputUsesZip64 = (zde._CompressedSize == 0xFFFFFFFF ||
+ zde._UncompressedSize == 0xFFFFFFFF ||
+ zde._RelativeOffsetOfLocalHeader == 0xFFFFFFFF);
+
+ // Console.WriteLine(" Input uses Z64?: {0}", zde._InputUsesZip64);
+
+ bytesRead += zde.ProcessExtraField(s, zde._extraFieldLength);
+ zde._CompressedFileDataSize = zde._CompressedSize;
+ }
+
+ // we've processed the extra field, so we know the encryption method is set now.
+ if (zde._Encryption == EncryptionAlgorithm.PkzipWeak)
+ {
+ // the "encryption header" of 12 bytes precedes the file data
+ zde._CompressedFileDataSize -= 12;
+ }
+#if AESCRYPTO
+ else if (zde.Encryption == EncryptionAlgorithm.WinZipAes128 ||
+ zde.Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ zde._CompressedFileDataSize = zde.CompressedSize -
+ (ZipEntry.GetLengthOfCryptoHeaderBytes(zde.Encryption) + 10);
+ zde._LengthOfTrailer = 10;
+ }
+#endif
+
+ // tally the trailing descriptor
+ if ((zde._BitField & 0x0008) == 0x0008)
+ {
+ // sig, CRC, Comp and Uncomp sizes
+ if (zde._InputUsesZip64)
+ zde._LengthOfTrailer += 24;
+ else
+ zde._LengthOfTrailer += 16;
+ }
+
+ // workitem 12744
+ zde.AlternateEncoding = ((zde._BitField & 0x0800) == 0x0800)
+ ? System.Text.Encoding.UTF8
+ :expectedEncoding;
+
+ zde.AlternateEncodingUsage = ZipOption.Always;
+
+ if (zde._commentLength > 0)
+ {
+ block = new byte[zde._commentLength];
+ n = s.Read(block, 0, block.Length);
+ bytesRead += n;
+ if ((zde._BitField & 0x0800) == 0x0800)
+ {
+ // UTF-8 is in use
+ zde._Comment = Ionic.Zip.SharedUtilities.Utf8StringFromBuffer(block);
+ }
+ else
+ {
+ zde._Comment = Ionic.Zip.SharedUtilities.StringFromBuffer(block, expectedEncoding);
+ }
+ }
+ //zde._LengthOfDirEntry = bytesRead;
+ return zde;
+ }
+
+
+ /// <summary>
+ /// Returns true if the passed-in value is a valid signature for a ZipDirEntry.
+ /// </summary>
+ /// <param name="signature">the candidate 4-byte signature value.</param>
+ /// <returns>true, if the signature is valid according to the PKWare spec.</returns>
+ internal static bool IsNotValidZipDirEntrySig(int signature)
+ {
+ return (signature != ZipConstants.ZipDirEntrySignature);
+ }
+
+
+ private Int16 _VersionMadeBy;
+ private Int16 _InternalFileAttrs;
+ private Int32 _ExternalFileAttrs;
+
+ //private Int32 _LengthOfDirEntry;
+ private Int16 _filenameLength;
+ private Int16 _extraFieldLength;
+ private Int16 _commentLength;
+ }
+
+
+}
--- /dev/null
+// ZipEntry.Extract.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009-2011 Dino Chiesa
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-August-06 18:08:21>
+//
+// ------------------------------------------------------------------
+//
+// This module defines logic for Extract methods on the ZipEntry class.
+//
+// ------------------------------------------------------------------
+
+
+using System;
+using System.IO;
+
+namespace Ionic.Zip
+{
+
+ internal partial class ZipEntry
+ {
+ /// <summary>
+ /// Extract the entry to the filesystem, starting at the current
+ /// working directory.
+ /// </summary>
+ ///
+ /// <overloads>
+ /// This method has a bunch of overloads! One of them is sure to
+ /// be the right one for you... If you don't like these, check
+ /// out the <c>ExtractWithPassword()</c> methods.
+ /// </overloads>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipEntry.ExtractExistingFile"/>
+ /// <seealso cref="ZipEntry.Extract(ExtractExistingFileAction)"/>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This method extracts an entry from a zip file into the current
+ /// working directory. The path of the entry as extracted is the full
+ /// path as specified in the zip archive, relative to the current
+ /// working directory. After the file is extracted successfully, the
+ /// file attributes and timestamps are set.
+ /// </para>
+ ///
+ /// <para>
+ /// The action taken when extraction an entry would overwrite an
+ /// existing file is determined by the <see cref="ExtractExistingFile"
+ /// /> property.
+ /// </para>
+ ///
+ /// <para>
+ /// Within the call to <c>Extract()</c>, the content for the entry is
+ /// written into a filesystem file, and then the last modified time of the
+ /// file is set according to the <see cref="LastModified"/> property on
+ /// the entry. See the remarks the <see cref="LastModified"/> property for
+ /// some details about the last modified time.
+ /// </para>
+ ///
+ /// </remarks>
+ public void Extract()
+ {
+ InternalExtract(".", null, null);
+ }
+
+
+ /// <summary>
+ /// Extract the entry to a file in the filesystem, using the specified
+ /// behavior when extraction would overwrite an existing file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// See the remarks on the <see cref="LastModified"/> property, for some
+ /// details about how the last modified time of the file is set after
+ /// extraction.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="extractExistingFile">
+ /// The action to take if extraction would overwrite an existing file.
+ /// </param>
+ public void Extract(ExtractExistingFileAction extractExistingFile)
+ {
+ ExtractExistingFile = extractExistingFile;
+ InternalExtract(".", null, null);
+ }
+
+ /// <summary>
+ /// Extracts the entry to the specified stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The caller can specify any write-able stream, for example a <see
+ /// cref="System.IO.FileStream"/>, a <see
+ /// cref="System.IO.MemoryStream"/>, or ASP.NET's
+ /// <c>Response.OutputStream</c>. The content will be decrypted and
+ /// decompressed as necessary. If the entry is encrypted and no password
+ /// is provided, this method will throw.
+ /// </para>
+ /// <para>
+ /// The position on the stream is not reset by this method before it extracts.
+ /// You may want to call stream.Seek() before calling ZipEntry.Extract().
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="stream">
+ /// the stream to which the entry should be extracted.
+ /// </param>
+ ///
+ public void Extract(Stream stream)
+ {
+ InternalExtract(null, stream, null);
+ }
+
+ /// <summary>
+ /// Extract the entry to the filesystem, starting at the specified base
+ /// directory.
+ /// </summary>
+ ///
+ /// <param name="baseDirectory">the pathname of the base directory</param>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipEntry.ExtractExistingFile"/>
+ /// <seealso cref="Ionic.Zip.ZipEntry.Extract(string, ExtractExistingFileAction)"/>
+ ///
+ /// <example>
+ /// This example extracts only the entries in a zip file that are .txt files,
+ /// into a directory called "textfiles".
+ /// <code lang="C#">
+ /// using (ZipFile zip = ZipFile.Read("PackedDocuments.zip"))
+ /// {
+ /// foreach (string s1 in zip.EntryFilenames)
+ /// {
+ /// if (s1.EndsWith(".txt"))
+ /// {
+ /// zip[s1].Extract("textfiles");
+ /// }
+ /// }
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip As ZipFile = ZipFile.Read("PackedDocuments.zip")
+ /// Dim s1 As String
+ /// For Each s1 In zip.EntryFilenames
+ /// If s1.EndsWith(".txt") Then
+ /// zip(s1).Extract("textfiles")
+ /// End If
+ /// Next
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// Using this method, existing entries in the filesystem will not be
+ /// overwritten. If you would like to force the overwrite of existing
+ /// files, see the <see cref="ExtractExistingFile"/> property, or call
+ /// <see cref="Extract(string, ExtractExistingFileAction)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// See the remarks on the <see cref="LastModified"/> property, for some
+ /// details about how the last modified time of the created file is set.
+ /// </para>
+ /// </remarks>
+ public void Extract(string baseDirectory)
+ {
+ InternalExtract(baseDirectory, null, null);
+ }
+
+
+
+
+
+ /// <summary>
+ /// Extract the entry to the filesystem, starting at the specified base
+ /// directory, and using the specified behavior when extraction would
+ /// overwrite an existing file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// See the remarks on the <see cref="LastModified"/> property, for some
+ /// details about how the last modified time of the created file is set.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// <code lang="C#">
+ /// String sZipPath = "Airborne.zip";
+ /// String sFilePath = "Readme.txt";
+ /// String sRootFolder = "Digado";
+ /// using (ZipFile zip = ZipFile.Read(sZipPath))
+ /// {
+ /// if (zip.EntryFileNames.Contains(sFilePath))
+ /// {
+ /// // use the string indexer on the zip file
+ /// zip[sFileName].Extract(sRootFolder,
+ /// ExtractExistingFileAction.OverwriteSilently);
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Dim sZipPath as String = "Airborne.zip"
+ /// Dim sFilePath As String = "Readme.txt"
+ /// Dim sRootFolder As String = "Digado"
+ /// Using zip As ZipFile = ZipFile.Read(sZipPath)
+ /// If zip.EntryFileNames.Contains(sFilePath)
+ /// ' use the string indexer on the zip file
+ /// zip(sFilePath).Extract(sRootFolder, _
+ /// ExtractExistingFileAction.OverwriteSilently)
+ /// End If
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="baseDirectory">the pathname of the base directory</param>
+ /// <param name="extractExistingFile">
+ /// The action to take if extraction would overwrite an existing file.
+ /// </param>
+ public void Extract(string baseDirectory, ExtractExistingFileAction extractExistingFile)
+ {
+ ExtractExistingFile = extractExistingFile;
+ InternalExtract(baseDirectory, null, null);
+ }
+
+
+ /// <summary>
+ /// Extract the entry to the filesystem, using the current working directory
+ /// and the specified password.
+ /// </summary>
+ ///
+ /// <overloads>
+ /// This method has a bunch of overloads! One of them is sure to be
+ /// the right one for you...
+ /// </overloads>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipEntry.ExtractExistingFile"/>
+ /// <seealso cref="Ionic.Zip.ZipEntry.ExtractWithPassword(ExtractExistingFileAction, string)"/>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// Existing entries in the filesystem will not be overwritten. If you
+ /// would like to force the overwrite of existing files, see the <see
+ /// cref="Ionic.Zip.ZipEntry.ExtractExistingFile"/>property, or call
+ /// <see
+ /// cref="ExtractWithPassword(ExtractExistingFileAction,string)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// See the remarks on the <see cref="LastModified"/> property for some
+ /// details about how the "last modified" time of the created file is
+ /// set.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// In this example, entries that use encryption are extracted using a
+ /// particular password.
+ /// <code>
+ /// using (var zip = ZipFile.Read(FilePath))
+ /// {
+ /// foreach (ZipEntry e in zip)
+ /// {
+ /// if (e.UsesEncryption)
+ /// e.ExtractWithPassword("Secret!");
+ /// else
+ /// e.Extract();
+ /// }
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip As ZipFile = ZipFile.Read(FilePath)
+ /// Dim e As ZipEntry
+ /// For Each e In zip
+ /// If (e.UsesEncryption)
+ /// e.ExtractWithPassword("Secret!")
+ /// Else
+ /// e.Extract
+ /// End If
+ /// Next
+ /// End Using
+ /// </code>
+ /// </example>
+ /// <param name="password">The Password to use for decrypting the entry.</param>
+ public void ExtractWithPassword(string password)
+ {
+ InternalExtract(".", null, password);
+ }
+
+ /// <summary>
+ /// Extract the entry to the filesystem, starting at the specified base
+ /// directory, and using the specified password.
+ /// </summary>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipEntry.ExtractExistingFile"/>
+ /// <seealso cref="Ionic.Zip.ZipEntry.ExtractWithPassword(string, ExtractExistingFileAction, string)"/>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Existing entries in the filesystem will not be overwritten. If you
+ /// would like to force the overwrite of existing files, see the <see
+ /// cref="Ionic.Zip.ZipEntry.ExtractExistingFile"/>property, or call
+ /// <see
+ /// cref="ExtractWithPassword(ExtractExistingFileAction,string)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// See the remarks on the <see cref="LastModified"/> property, for some
+ /// details about how the last modified time of the created file is set.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="baseDirectory">The pathname of the base directory.</param>
+ /// <param name="password">The Password to use for decrypting the entry.</param>
+ public void ExtractWithPassword(string baseDirectory, string password)
+ {
+ InternalExtract(baseDirectory, null, password);
+ }
+
+
+
+
+ /// <summary>
+ /// Extract the entry to a file in the filesystem, relative to the
+ /// current directory, using the specified behavior when extraction
+ /// would overwrite an existing file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// See the remarks on the <see cref="LastModified"/> property, for some
+ /// details about how the last modified time of the created file is set.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="password">The Password to use for decrypting the entry.</param>
+ ///
+ /// <param name="extractExistingFile">
+ /// The action to take if extraction would overwrite an existing file.
+ /// </param>
+ public void ExtractWithPassword(ExtractExistingFileAction extractExistingFile, string password)
+ {
+ ExtractExistingFile = extractExistingFile;
+ InternalExtract(".", null, password);
+ }
+
+
+
+ /// <summary>
+ /// Extract the entry to the filesystem, starting at the specified base
+ /// directory, and using the specified behavior when extraction would
+ /// overwrite an existing file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// See the remarks on the <see cref="LastModified"/> property, for some
+ /// details about how the last modified time of the created file is set.
+ /// </remarks>
+ ///
+ /// <param name="baseDirectory">the pathname of the base directory</param>
+ ///
+ /// <param name="extractExistingFile">The action to take if extraction would
+ /// overwrite an existing file.</param>
+ ///
+ /// <param name="password">The Password to use for decrypting the entry.</param>
+ public void ExtractWithPassword(string baseDirectory, ExtractExistingFileAction extractExistingFile, string password)
+ {
+ ExtractExistingFile = extractExistingFile;
+ InternalExtract(baseDirectory, null, password);
+ }
+
+ /// <summary>
+ /// Extracts the entry to the specified stream, using the specified
+ /// Password. For example, the caller could extract to Console.Out, or
+ /// to a MemoryStream.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The caller can specify any write-able stream, for example a <see
+ /// cref="System.IO.FileStream"/>, a <see
+ /// cref="System.IO.MemoryStream"/>, or ASP.NET's
+ /// <c>Response.OutputStream</c>. The content will be decrypted and
+ /// decompressed as necessary. If the entry is encrypted and no password
+ /// is provided, this method will throw.
+ /// </para>
+ /// <para>
+ /// The position on the stream is not reset by this method before it extracts.
+ /// You may want to call stream.Seek() before calling ZipEntry.Extract().
+ /// </para>
+ /// </remarks>
+ ///
+ ///
+ /// <param name="stream">
+ /// the stream to which the entry should be extracted.
+ /// </param>
+ /// <param name="password">
+ /// The password to use for decrypting the entry.
+ /// </param>
+ public void ExtractWithPassword(Stream stream, string password)
+ {
+ InternalExtract(null, stream, password);
+ }
+
+
+ /// <summary>
+ /// Opens a readable stream corresponding to the zip entry in the
+ /// archive. The stream decompresses and decrypts as necessary, as it
+ /// is read.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// DotNetZip offers a variety of ways to extract entries from a zip
+ /// file. This method allows an application to extract an entry by
+ /// reading a <see cref="System.IO.Stream"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// The return value is of type <see
+ /// cref="Ionic.Crc.CrcCalculatorStream"/>. Use it as you would any
+ /// stream for reading. When an application calls <see
+ /// cref="Stream.Read(byte[], int, int)"/> on that stream, it will
+ /// receive data from the zip entry that is decrypted and decompressed
+ /// as necessary.
+ /// </para>
+ ///
+ /// <para>
+ /// <c>CrcCalculatorStream</c> adds one additional feature: it keeps a
+ /// CRC32 checksum on the bytes of the stream as it is read. The CRC
+ /// value is available in the <see
+ /// cref="Ionic.Crc.CrcCalculatorStream.Crc"/> property on the
+ /// <c>CrcCalculatorStream</c>. When the read is complete, your
+ /// application
+ /// <em>should</em> check this CRC against the <see cref="ZipEntry.Crc"/>
+ /// property on the <c>ZipEntry</c> to validate the content of the
+ /// ZipEntry. You don't have to validate the entry using the CRC, but
+ /// you should, to verify integrity. Check the example for how to do
+ /// this.
+ /// </para>
+ ///
+ /// <para>
+ /// If the entry is protected with a password, then you need to provide
+ /// a password prior to calling <see cref="OpenReader()"/>, either by
+ /// setting the <see cref="Password"/> property on the entry, or the
+ /// <see cref="ZipFile.Password"/> property on the <c>ZipFile</c>
+ /// itself. Or, you can use <see cref="OpenReader(String)" />, the
+ /// overload of OpenReader that accepts a password parameter.
+ /// </para>
+ ///
+ /// <para>
+ /// If you want to extract entry data into a write-able stream that is
+ /// already opened, like a <see cref="System.IO.FileStream"/>, do not
+ /// use this method. Instead, use <see cref="Extract(Stream)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// Your application may use only one stream created by OpenReader() at
+ /// a time, and you should not call other Extract methods before
+ /// completing your reads on a stream obtained from OpenReader(). This
+ /// is because there is really only one source stream for the compressed
+ /// content. A call to OpenReader() seeks in the source stream, to the
+ /// beginning of the compressed content. A subsequent call to
+ /// OpenReader() on a different entry will seek to a different position
+ /// in the source stream, as will a call to Extract() or one of its
+ /// overloads. This will corrupt the state for the decompressing stream
+ /// from the original call to OpenReader().
+ /// </para>
+ ///
+ /// <para>
+ /// The <c>OpenReader()</c> method works only when the ZipEntry is
+ /// obtained from an instance of <c>ZipFile</c>. This method will throw
+ /// an exception if the ZipEntry is obtained from a <see
+ /// cref="ZipInputStream"/>.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example shows how to open a zip archive, then read in a named
+ /// entry via a stream. After the read loop is complete, the code
+ /// compares the calculated during the read loop with the expected CRC
+ /// on the <c>ZipEntry</c>, to verify the extraction.
+ /// <code>
+ /// using (ZipFile zip = new ZipFile(ZipFileToRead))
+ /// {
+ /// ZipEntry e1= zip["Elevation.mp3"];
+ /// using (Ionic.Zlib.CrcCalculatorStream s = e1.OpenReader())
+ /// {
+ /// byte[] buffer = new byte[4096];
+ /// int n, totalBytesRead= 0;
+ /// do {
+ /// n = s.Read(buffer,0, buffer.Length);
+ /// totalBytesRead+=n;
+ /// } while (n>0);
+ /// if (s.Crc32 != e1.Crc32)
+ /// throw new Exception(string.Format("The Zip Entry failed the CRC Check. (0x{0:X8}!=0x{1:X8})", s.Crc32, e1.Crc32));
+ /// if (totalBytesRead != e1.UncompressedSize)
+ /// throw new Exception(string.Format("We read an unexpected number of bytes. ({0}!={1})", totalBytesRead, e1.UncompressedSize));
+ /// }
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip As New ZipFile(ZipFileToRead)
+ /// Dim e1 As ZipEntry = zip.Item("Elevation.mp3")
+ /// Using s As Ionic.Zlib.CrcCalculatorStream = e1.OpenReader
+ /// Dim n As Integer
+ /// Dim buffer As Byte() = New Byte(4096) {}
+ /// Dim totalBytesRead As Integer = 0
+ /// Do
+ /// n = s.Read(buffer, 0, buffer.Length)
+ /// totalBytesRead = (totalBytesRead + n)
+ /// Loop While (n > 0)
+ /// If (s.Crc32 <> e1.Crc32) Then
+ /// Throw New Exception(String.Format("The Zip Entry failed the CRC Check. (0x{0:X8}!=0x{1:X8})", s.Crc32, e1.Crc32))
+ /// End If
+ /// If (totalBytesRead <> e1.UncompressedSize) Then
+ /// Throw New Exception(String.Format("We read an unexpected number of bytes. ({0}!={1})", totalBytesRead, e1.UncompressedSize))
+ /// End If
+ /// End Using
+ /// End Using
+ /// </code>
+ /// </example>
+ /// <seealso cref="Ionic.Zip.ZipEntry.Extract(System.IO.Stream)"/>
+ /// <returns>The Stream for reading.</returns>
+ public Ionic.Crc.CrcCalculatorStream OpenReader()
+ {
+ // workitem 10923
+ if (_container.ZipFile == null)
+ throw new InvalidOperationException("Use OpenReader() only with ZipFile.");
+
+ // use the entry password if it is non-null,
+ // else use the zipfile password, which is possibly null
+ return InternalOpenReader(this._Password ?? this._container.Password);
+ }
+
+ /// <summary>
+ /// Opens a readable stream for an encrypted zip entry in the archive.
+ /// The stream decompresses and decrypts as necessary, as it is read.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// See the documentation on the <see cref="OpenReader()"/> method for
+ /// full details. This overload allows the application to specify a
+ /// password for the <c>ZipEntry</c> to be read.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="password">The password to use for decrypting the entry.</param>
+ /// <returns>The Stream for reading.</returns>
+ public Ionic.Crc.CrcCalculatorStream OpenReader(string password)
+ {
+ // workitem 10923
+ if (_container.ZipFile == null)
+ throw new InvalidOperationException("Use OpenReader() only with ZipFile.");
+
+ return InternalOpenReader(password);
+ }
+
+
+
+ internal Ionic.Crc.CrcCalculatorStream InternalOpenReader(string password)
+ {
+ ValidateCompression();
+ ValidateEncryption();
+ SetupCryptoForExtract(password);
+
+ // workitem 7958
+ if (this._Source != ZipEntrySource.ZipFile)
+ throw new BadStateException("You must call ZipFile.Save before calling OpenReader");
+
+ // LeftToRead is a count of bytes remaining to be read (out)
+ // from the stream AFTER decompression and decryption.
+ // It is the uncompressed size, unless ... there is no compression in which
+ // case ...? :< I'm not sure why it's not always UncompressedSize
+ Int64 LeftToRead = (_CompressionMethod_FromZipFile == (short)CompressionMethod.None)
+ ? this._CompressedFileDataSize
+ : this.UncompressedSize;
+
+ Stream input = this.ArchiveStream;
+
+ this.ArchiveStream.Seek(this.FileDataPosition, SeekOrigin.Begin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(this.ArchiveStream);
+
+ _inputDecryptorStream = GetExtractDecryptor(input);
+ Stream input3 = GetExtractDecompressor(_inputDecryptorStream);
+
+ return new Ionic.Crc.CrcCalculatorStream(input3, LeftToRead);
+ }
+
+
+
+ private void OnExtractProgress(Int64 bytesWritten, Int64 totalBytesToWrite)
+ {
+ if (_container.ZipFile != null)
+ _ioOperationCanceled = _container.ZipFile.OnExtractBlock(this, bytesWritten, totalBytesToWrite);
+ }
+
+
+ private void OnBeforeExtract(string path)
+ {
+ // When in the context of a ZipFile.ExtractAll, the events are generated from
+ // the ZipFile method, not from within the ZipEntry instance. (why?)
+ // Therefore we suppress the events originating from the ZipEntry method.
+ if (_container.ZipFile != null)
+ {
+ if (!_container.ZipFile._inExtractAll)
+ {
+ _ioOperationCanceled = _container.ZipFile.OnSingleEntryExtract(this, path, true);
+ }
+ }
+ }
+
+ private void OnAfterExtract(string path)
+ {
+ // When in the context of a ZipFile.ExtractAll, the events are generated from
+ // the ZipFile method, not from within the ZipEntry instance. (why?)
+ // Therefore we suppress the events originating from the ZipEntry method.
+ if (_container.ZipFile != null)
+ {
+ if (!_container.ZipFile._inExtractAll)
+ {
+ _container.ZipFile.OnSingleEntryExtract(this, path, false);
+ }
+ }
+ }
+
+ private void OnExtractExisting(string path)
+ {
+ if (_container.ZipFile != null)
+ _ioOperationCanceled = _container.ZipFile.OnExtractExisting(this, path);
+ }
+
+ private static void ReallyDelete(string fileName)
+ {
+ // workitem 7881
+ // reset ReadOnly bit if necessary
+#if NETCF
+ if ( (NetCfFile.GetAttributes(fileName) & (uint)FileAttributes.ReadOnly) == (uint)FileAttributes.ReadOnly)
+ NetCfFile.SetAttributes(fileName, (uint)FileAttributes.Normal);
+#elif SILVERLIGHT
+#else
+ if ((File.GetAttributes(fileName) & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
+ File.SetAttributes(fileName, FileAttributes.Normal);
+#endif
+ File.Delete(fileName);
+ }
+
+
+ private void WriteStatus(string format, params Object[] args)
+ {
+ if (_container.ZipFile != null && _container.ZipFile.Verbose) _container.ZipFile.StatusMessageTextWriter.WriteLine(format, args);
+ }
+
+
+ // Pass in either basedir or s, but not both.
+ // In other words, you can extract to a stream or to a directory (filesystem), but not both!
+ // The Password param is required for encrypted entries.
+ private void InternalExtract(string baseDir, Stream outstream, string password)
+ {
+ // workitem 7958
+ if (_container == null)
+ throw new BadStateException("This entry is an orphan");
+
+ // workitem 10355
+ if (_container.ZipFile == null)
+ throw new InvalidOperationException("Use Extract() only with ZipFile.");
+
+ _container.ZipFile.Reset(false);
+
+ if (this._Source != ZipEntrySource.ZipFile)
+ throw new BadStateException("You must call ZipFile.Save before calling any Extract method");
+
+ OnBeforeExtract(baseDir);
+ _ioOperationCanceled = false;
+ string targetFileName = null;
+ Stream output = null;
+ bool fileExistsBeforeExtraction = false;
+ bool checkLaterForResetDirTimes = false;
+ try
+ {
+ ValidateCompression();
+ ValidateEncryption();
+
+ if (ValidateOutput(baseDir, outstream, out targetFileName))
+ {
+ WriteStatus("extract dir {0}...", targetFileName);
+ // if true, then the entry was a directory and has been created.
+ // We need to fire the Extract Event.
+ OnAfterExtract(baseDir);
+ return;
+ }
+
+ // workitem 10639
+ // do we want to extract to a regular filesystem file?
+ if (targetFileName != null)
+ {
+ // Check for extracting to a previously extant file. The user
+ // can specify bejavior for that case: overwrite, don't
+ // overwrite, and throw. Also, if the file exists prior to
+ // extraction, it affects exception handling: whether to delete
+ // the target of extraction or not. This check needs to be done
+ // before the password check is done, because password check may
+ // throw a BadPasswordException, which triggers the catch,
+ // wherein the extant file may be deleted if not flagged as
+ // pre-existing.
+ if (File.Exists(targetFileName))
+ {
+ fileExistsBeforeExtraction = true;
+ int rc = CheckExtractExistingFile(baseDir, targetFileName);
+ if (rc == 2) goto ExitTry; // cancel
+ if (rc == 1) return; // do not overwrite
+ }
+ }
+
+ // If no password explicitly specified, use the password on the entry itself,
+ // or on the zipfile itself.
+ string p = password ?? this._Password ?? this._container.Password;
+ if (_Encryption_FromZipFile != EncryptionAlgorithm.None)
+ {
+ if (p == null)
+ throw new BadPasswordException();
+ SetupCryptoForExtract(p);
+ }
+
+
+ // set up the output stream
+ if (targetFileName != null)
+ {
+ WriteStatus("extract file {0}...", targetFileName);
+ targetFileName += ".tmp";
+ var dirName = Path.GetDirectoryName(targetFileName);
+ // ensure the target path exists
+ if (!Directory.Exists(dirName))
+ {
+ // we create the directory here, but we do not set the
+ // create/modified/accessed times on it because it is being
+ // created implicitly, not explcitly. There's no entry in the
+ // zip archive for the directory.
+ Directory.CreateDirectory(dirName);
+ }
+ else
+ {
+ // workitem 8264
+ if (_container.ZipFile != null)
+ checkLaterForResetDirTimes = _container.ZipFile._inExtractAll;
+ }
+
+ // File.Create(CreateNew) will overwrite any existing file.
+ output = new FileStream(targetFileName, FileMode.CreateNew);
+ }
+ else
+ {
+ WriteStatus("extract entry {0} to stream...", FileName);
+ output = outstream;
+ }
+
+
+ if (_ioOperationCanceled)
+ goto ExitTry;
+
+ Int32 ActualCrc32 = ExtractOne(output);
+
+ if (_ioOperationCanceled)
+ goto ExitTry;
+
+ VerifyCrcAfterExtract(ActualCrc32);
+
+ if (targetFileName != null)
+ {
+ output.Close();
+ output = null;
+
+ // workitem 10639
+ // move file to permanent home
+ string tmpName = targetFileName;
+ string zombie = null;
+ targetFileName = tmpName.Substring(0,tmpName.Length-4);
+
+ if (fileExistsBeforeExtraction)
+ {
+ // An AV program may hold the target file open, which means
+ // File.Delete() will succeed, though the actual deletion
+ // remains pending. This will prevent a subsequent
+ // File.Move() from succeeding. To avoid this, when the file
+ // already exists, we need to replace it in 3 steps:
+ //
+ // 1. rename the existing file to a zombie name;
+ // 2. rename the extracted file from the temp name to
+ // the target file name;
+ // 3. delete the zombie.
+ //
+ zombie = targetFileName + ".PendingOverwrite";
+ File.Move(targetFileName, zombie);
+ }
+
+ File.Move(tmpName, targetFileName);
+ _SetTimes(targetFileName, true);
+
+ if (zombie != null && File.Exists(zombie))
+ ReallyDelete(zombie);
+
+ // workitem 8264
+ if (checkLaterForResetDirTimes)
+ {
+ // This is sort of a hack. What I do here is set the time on
+ // the parent directory, every time a file is extracted into
+ // it. If there is a directory with 1000 files, then I set
+ // the time on the dir, 1000 times. This allows the directory
+ // to have times that reflect the actual time on the entry in
+ // the zip archive.
+
+ // String.Contains is not available on .NET CF 2.0
+ if (this.FileName.IndexOf('/') != -1)
+ {
+ string dirname = Path.GetDirectoryName(this.FileName);
+ if (this._container.ZipFile[dirname] == null)
+ {
+ _SetTimes(Path.GetDirectoryName(targetFileName), false);
+ }
+ }
+ }
+
+#if NETCF
+ // workitem 7926 - version made by OS can be zero or 10
+ if ((_VersionMadeBy & 0xFF00) == 0x0a00 || (_VersionMadeBy & 0xFF00) == 0x0000)
+ NetCfFile.SetAttributes(targetFileName, (uint)_ExternalFileAttrs);
+
+#else
+ // workitem 7071
+ //
+ // We can only apply attributes if they are relevant to the NTFS
+ // OS. Must do this LAST because it may involve a ReadOnly bit,
+ // which would prevent us from setting the time, etc.
+ //
+ // workitem 7926 - version made by OS can be zero (FAT) or 10
+ // (NTFS)
+ if ((_VersionMadeBy & 0xFF00) == 0x0a00 || (_VersionMadeBy & 0xFF00) == 0x0000)
+ File.SetAttributes(targetFileName, (FileAttributes)_ExternalFileAttrs);
+#endif
+ }
+
+ OnAfterExtract(baseDir);
+
+ ExitTry: ;
+ }
+ catch (Exception)
+ {
+ _ioOperationCanceled = true;
+ throw;
+ }
+ finally
+ {
+ if (_ioOperationCanceled)
+ {
+ if (targetFileName != null)
+ {
+ try
+ {
+ if (output != null) output.Close();
+ // An exception has occurred. If the file exists, check
+ // to see if it existed before we tried extracting. If
+ // it did not, attempt to remove the target file. There
+ // is a small possibility that the existing file has
+ // been extracted successfully, overwriting a previously
+ // existing file, and an exception was thrown after that
+ // but before final completion (setting times, etc). In
+ // that case the file will remain, even though some
+ // error occurred. Nothing to be done about it.
+ if (File.Exists(targetFileName) && !fileExistsBeforeExtraction)
+ File.Delete(targetFileName);
+
+ }
+ finally { }
+ }
+ }
+ }
+ }
+
+
+#if NOT
+ internal void CalcWinZipAesMac(Stream input)
+ {
+ if (Encryption == EncryptionAlgorithm.WinZipAes128 ||
+ Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ if (input is WinZipAesCipherStream)
+ wzs = input as WinZipAesCipherStream;
+
+ else if (input is Ionic.Zlib.CrcCalculatorStream)
+ {
+ xxx;
+ }
+
+ }
+ }
+#endif
+
+
+ internal void VerifyCrcAfterExtract(Int32 actualCrc32)
+ {
+
+#if AESCRYPTO
+ // After extracting, Validate the CRC32
+ if (actualCrc32 != _Crc32)
+ {
+ // CRC is not meaningful with WinZipAES and AES method 2 (AE-2)
+ if ((Encryption != EncryptionAlgorithm.WinZipAes128 &&
+ Encryption != EncryptionAlgorithm.WinZipAes256)
+ || _WinZipAesMethod != 0x02)
+ throw new BadCrcException("CRC error: the file being extracted appears to be corrupted. " +
+ String.Format("Expected 0x{0:X8}, Actual 0x{1:X8}", _Crc32, actualCrc32));
+ }
+
+ // ignore MAC if the size of the file is zero
+ if (this.UncompressedSize == 0)
+ return;
+
+ // calculate the MAC
+ if (Encryption == EncryptionAlgorithm.WinZipAes128 ||
+ Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ WinZipAesCipherStream wzs = _inputDecryptorStream as WinZipAesCipherStream;
+ _aesCrypto_forExtract.CalculatedMac = wzs.FinalAuthentication;
+
+ _aesCrypto_forExtract.ReadAndVerifyMac(this.ArchiveStream); // throws if MAC is bad
+ // side effect: advances file position.
+ }
+
+
+
+
+#else
+ if (actualCrc32 != _Crc32)
+ throw new BadCrcException("CRC error: the file being extracted appears to be corrupted. " +
+ String.Format("Expected 0x{0:X8}, Actual 0x{1:X8}", _Crc32, actualCrc32));
+#endif
+ }
+
+
+
+
+ private int CheckExtractExistingFile(string baseDir, string targetFileName)
+ {
+ int loop = 0;
+ // returns: 0 == extract, 1 = don't, 2 = cancel
+ do
+ {
+ switch (ExtractExistingFile)
+ {
+ case ExtractExistingFileAction.OverwriteSilently:
+ WriteStatus("the file {0} exists; will overwrite it...", targetFileName);
+ return 0;
+
+ case ExtractExistingFileAction.DoNotOverwrite:
+ WriteStatus("the file {0} exists; not extracting entry...", FileName);
+ OnAfterExtract(baseDir);
+ return 1;
+
+ case ExtractExistingFileAction.InvokeExtractProgressEvent:
+ if (loop>0)
+ throw new ZipException(String.Format("The file {0} already exists.", targetFileName));
+ OnExtractExisting(baseDir);
+ if (_ioOperationCanceled)
+ return 2;
+
+ // loop around
+ break;
+
+ case ExtractExistingFileAction.Throw:
+ default:
+ throw new ZipException(String.Format("The file {0} already exists.", targetFileName));
+ }
+ loop++;
+ }
+ while (true);
+ }
+
+
+
+
+ private void _CheckRead(int nbytes)
+ {
+ if (nbytes == 0)
+ throw new BadReadException(String.Format("bad read of entry {0} from compressed archive.",
+ this.FileName));
+ }
+
+
+ private Stream _inputDecryptorStream;
+
+ private Int32 ExtractOne(Stream output)
+ {
+ Int32 CrcResult = 0;
+ Stream input = this.ArchiveStream;
+
+ try
+ {
+ // change for workitem 8098
+ input.Seek(this.FileDataPosition, SeekOrigin.Begin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(input);
+
+ byte[] bytes = new byte[BufferSize];
+
+ // The extraction process varies depending on how the entry was
+ // stored. It could have been encrypted, and it coould have
+ // been compressed, or both, or neither. So we need to check
+ // both the encryption flag and the compression flag, and take
+ // the proper action in all cases.
+
+ Int64 LeftToRead = (_CompressionMethod_FromZipFile != (short)CompressionMethod.None)
+ ? this.UncompressedSize
+ : this._CompressedFileDataSize;
+
+ // Get a stream that either decrypts or not.
+ _inputDecryptorStream = GetExtractDecryptor(input);
+
+ Stream input3 = GetExtractDecompressor( _inputDecryptorStream );
+
+ Int64 bytesWritten = 0;
+ // As we read, we maybe decrypt, and then we maybe decompress. Then we write.
+ using (var s1 = new Ionic.Crc.CrcCalculatorStream(input3))
+ {
+ while (LeftToRead > 0)
+ {
+ //Console.WriteLine("ExtractOne: LeftToRead {0}", LeftToRead);
+
+ // Casting LeftToRead down to an int is ok here in the else clause,
+ // because that only happens when it is less than bytes.Length,
+ // which is much less than MAX_INT.
+ int len = (LeftToRead > bytes.Length) ? bytes.Length : (int)LeftToRead;
+ int n = s1.Read(bytes, 0, len);
+
+ // must check data read - essential for detecting corrupt zip files
+ _CheckRead(n);
+
+ output.Write(bytes, 0, n);
+ LeftToRead -= n;
+ bytesWritten += n;
+
+ // fire the progress event, check for cancels
+ OnExtractProgress(bytesWritten, UncompressedSize);
+ if (_ioOperationCanceled)
+ {
+ break;
+ }
+ }
+
+ CrcResult = s1.Crc;
+ }
+ }
+ finally
+ {
+ var zss = input as ZipSegmentedStream;
+ if (zss != null)
+ {
+#if NETCF
+ zss.Close();
+#else
+ // need to dispose it
+ zss.Dispose();
+#endif
+ _archiveStream = null;
+ }
+ }
+
+ return CrcResult;
+ }
+
+
+
+ internal Stream GetExtractDecompressor(Stream input2)
+ {
+ // get a stream that either decompresses or not.
+ switch (_CompressionMethod_FromZipFile)
+ {
+ case (short)CompressionMethod.None:
+ return input2;
+ case (short)CompressionMethod.Deflate:
+ return new Ionic.Zlib.DeflateStream(input2, Ionic.Zlib.CompressionMode.Decompress, true);
+#if BZIP
+ case (short)CompressionMethod.BZip2:
+ return new Ionic.BZip2.BZip2InputStream(input2, true);
+#endif
+ }
+
+ return null;
+ }
+
+
+
+ internal Stream GetExtractDecryptor(Stream input)
+ {
+ Stream input2 = null;
+ if (_Encryption_FromZipFile == EncryptionAlgorithm.PkzipWeak)
+ input2 = new ZipCipherStream(input, _zipCrypto_forExtract, CryptoMode.Decrypt);
+
+#if AESCRYPTO
+ else if (_Encryption_FromZipFile == EncryptionAlgorithm.WinZipAes128 ||
+ _Encryption_FromZipFile == EncryptionAlgorithm.WinZipAes256)
+ input2 = new WinZipAesCipherStream(input, _aesCrypto_forExtract, _CompressedFileDataSize, CryptoMode.Decrypt);
+#endif
+
+ else
+ input2 = input;
+
+ return input2;
+ }
+
+
+
+
+ internal void _SetTimes(string fileOrDirectory, bool isFile)
+ {
+#if SILVERLIGHT
+ // punt on setting file times
+#else
+ // workitem 8807:
+ // Because setting the time is not considered to be a fatal error,
+ // and because other applications can interfere with the setting
+ // of a time on a directory, we're going to swallow IO exceptions
+ // in this method.
+
+ try
+ {
+ if (_ntfsTimesAreSet)
+ {
+#if NETCF
+ // workitem 7944: set time should not be a fatal error on CF
+ int rc = NetCfFile.SetTimes(fileOrDirectory, _Ctime, _Atime, _Mtime);
+ if ( rc != 0)
+ {
+ WriteStatus("Warning: SetTimes failed. entry({0}) file({1}) rc({2})",
+ FileName, fileOrDirectory, rc);
+ }
+#else
+ if (isFile)
+ {
+ // It's possible that the extract was cancelled, in which case,
+ // the file does not exist.
+ if (File.Exists(fileOrDirectory))
+ {
+ File.SetCreationTimeUtc(fileOrDirectory, _Ctime);
+ File.SetLastAccessTimeUtc(fileOrDirectory, _Atime);
+ File.SetLastWriteTimeUtc(fileOrDirectory, _Mtime);
+ }
+ }
+ else
+ {
+ // It's possible that the extract was cancelled, in which case,
+ // the directory does not exist.
+ if (Directory.Exists(fileOrDirectory))
+ {
+ Directory.SetCreationTimeUtc(fileOrDirectory, _Ctime);
+ Directory.SetLastAccessTimeUtc(fileOrDirectory, _Atime);
+ Directory.SetLastWriteTimeUtc(fileOrDirectory, _Mtime);
+ }
+ }
+#endif
+ }
+ else
+ {
+ // workitem 6191
+ DateTime AdjustedLastModified = Ionic.Zip.SharedUtilities.AdjustTime_Reverse(LastModified);
+
+#if NETCF
+ int rc = NetCfFile.SetLastWriteTime(fileOrDirectory, AdjustedLastModified);
+
+ if ( rc != 0)
+ {
+ WriteStatus("Warning: SetLastWriteTime failed. entry({0}) file({1}) rc({2})",
+ FileName, fileOrDirectory, rc);
+ }
+#else
+ if (isFile)
+ File.SetLastWriteTime(fileOrDirectory, AdjustedLastModified);
+ else
+ Directory.SetLastWriteTime(fileOrDirectory, AdjustedLastModified);
+#endif
+ }
+ }
+ catch (System.IO.IOException ioexc1)
+ {
+ WriteStatus("failed to set time on {0}: {1}", fileOrDirectory, ioexc1.Message);
+ }
+#endif
+ }
+
+
+ #region Support methods
+
+
+ // workitem 7968
+ private string UnsupportedAlgorithm
+ {
+ get
+ {
+ string alg = String.Empty;
+ switch (_UnsupportedAlgorithmId)
+ {
+ case 0:
+ alg = "--";
+ break;
+ case 0x6601:
+ alg = "DES";
+ break;
+ case 0x6602: // - RC2 (version needed to extract < 5.2)
+ alg = "RC2";
+ break;
+ case 0x6603: // - 3DES 168
+ alg = "3DES-168";
+ break;
+ case 0x6609: // - 3DES 112
+ alg = "3DES-112";
+ break;
+ case 0x660E: // - AES 128
+ alg = "PKWare AES128";
+ break;
+ case 0x660F: // - AES 192
+ alg = "PKWare AES192";
+ break;
+ case 0x6610: // - AES 256
+ alg = "PKWare AES256";
+ break;
+ case 0x6702: // - RC2 (version needed to extract >= 5.2)
+ alg = "RC2";
+ break;
+ case 0x6720: // - Blowfish
+ alg = "Blowfish";
+ break;
+ case 0x6721: // - Twofish
+ alg = "Twofish";
+ break;
+ case 0x6801: // - RC4
+ alg = "RC4";
+ break;
+ case 0xFFFF: // - Unknown algorithm
+ default:
+ alg = String.Format("Unknown (0x{0:X4})", _UnsupportedAlgorithmId);
+ break;
+ }
+ return alg;
+ }
+ }
+
+ // workitem 7968
+ private string UnsupportedCompressionMethod
+ {
+ get
+ {
+ string meth = String.Empty;
+ switch ((int)_CompressionMethod)
+ {
+ case 0:
+ meth = "Store";
+ break;
+ case 1:
+ meth = "Shrink";
+ break;
+ case 8:
+ meth = "DEFLATE";
+ break;
+ case 9:
+ meth = "Deflate64";
+ break;
+ case 12:
+ meth = "BZIP2"; // only if BZIP not compiled in
+ break;
+ case 14:
+ meth = "LZMA";
+ break;
+ case 19:
+ meth = "LZ77";
+ break;
+ case 98:
+ meth = "PPMd";
+ break;
+ default:
+ meth = String.Format("Unknown (0x{0:X4})", _CompressionMethod);
+ break;
+ }
+ return meth;
+ }
+ }
+
+
+ internal void ValidateEncryption()
+ {
+ if (Encryption != EncryptionAlgorithm.PkzipWeak &&
+#if AESCRYPTO
+ Encryption != EncryptionAlgorithm.WinZipAes128 &&
+ Encryption != EncryptionAlgorithm.WinZipAes256 &&
+#endif
+ Encryption != EncryptionAlgorithm.None)
+ {
+ // workitem 7968
+ if (_UnsupportedAlgorithmId != 0)
+ throw new ZipException(String.Format("Cannot extract: Entry {0} is encrypted with an algorithm not supported by DotNetZip: {1}",
+ FileName, UnsupportedAlgorithm));
+ else
+ throw new ZipException(String.Format("Cannot extract: Entry {0} uses an unsupported encryption algorithm ({1:X2})",
+ FileName, (int)Encryption));
+ }
+ }
+
+
+ private void ValidateCompression()
+ {
+ if ((_CompressionMethod_FromZipFile != (short)CompressionMethod.None) &&
+ (_CompressionMethod_FromZipFile != (short)CompressionMethod.Deflate)
+#if BZIP
+ && (_CompressionMethod_FromZipFile != (short)CompressionMethod.BZip2)
+#endif
+ )
+ throw new ZipException(String.Format("Entry {0} uses an unsupported compression method (0x{1:X2}, {2})",
+ FileName, _CompressionMethod_FromZipFile, UnsupportedCompressionMethod));
+ }
+
+
+ private void SetupCryptoForExtract(string password)
+ {
+ //if (password == null) return;
+ if (_Encryption_FromZipFile == EncryptionAlgorithm.None) return;
+
+ if (_Encryption_FromZipFile == EncryptionAlgorithm.PkzipWeak)
+ {
+ if (password == null)
+ throw new ZipException("Missing password.");
+
+ this.ArchiveStream.Seek(this.FileDataPosition - 12, SeekOrigin.Begin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(this.ArchiveStream);
+ _zipCrypto_forExtract = ZipCrypto.ForRead(password, this);
+ }
+
+#if AESCRYPTO
+ else if (_Encryption_FromZipFile == EncryptionAlgorithm.WinZipAes128 ||
+ _Encryption_FromZipFile == EncryptionAlgorithm.WinZipAes256)
+ {
+ if (password == null)
+ throw new ZipException("Missing password.");
+
+ // If we already have a WinZipAesCrypto object in place, use it.
+ // It can be set up in the ReadDirEntry(), or during a previous Extract.
+ if (_aesCrypto_forExtract != null)
+ {
+ _aesCrypto_forExtract.Password = password;
+ }
+ else
+ {
+ int sizeOfSaltAndPv = GetLengthOfCryptoHeaderBytes(_Encryption_FromZipFile);
+ this.ArchiveStream.Seek(this.FileDataPosition - sizeOfSaltAndPv, SeekOrigin.Begin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(this.ArchiveStream);
+ int keystrength = GetKeyStrengthInBits(_Encryption_FromZipFile);
+ _aesCrypto_forExtract = WinZipAesCrypto.ReadFromStream(password, keystrength, this.ArchiveStream);
+ }
+ }
+#endif
+ }
+
+
+
+ /// <summary>
+ /// Validates that the args are consistent.
+ /// </summary>
+ /// <remarks>
+ /// Only one of {baseDir, outStream} can be non-null.
+ /// If baseDir is non-null, then the outputFile is created.
+ /// </remarks>
+ private bool ValidateOutput(string basedir, Stream outstream, out string outFileName)
+ {
+ if (basedir != null)
+ {
+ // Sometimes the name on the entry starts with a slash.
+ // Rather than unpack to the root of the volume, we're going to
+ // drop the slash and unpack to the specified base directory.
+ string f = this.FileName.Replace("\\","/");
+
+ // workitem 11772: remove drive letter with separator
+ if (f.IndexOf(':') == 1)
+ f= f.Substring(2);
+
+ if (f.StartsWith("/"))
+ f= f.Substring(1);
+
+ // String.Contains is not available on .NET CF 2.0
+
+ if (_container.ZipFile.FlattenFoldersOnExtract)
+ outFileName = Path.Combine(basedir,
+ (f.IndexOf('/') != -1) ? Path.GetFileName(f) : f);
+ else
+ outFileName = Path.Combine(basedir, f);
+
+ // workitem 10639
+ outFileName = outFileName.Replace("/","\\");
+
+ // check if it is a directory
+ if ((IsDirectory) || (FileName.EndsWith("/")))
+ {
+ if (!Directory.Exists(outFileName))
+ {
+ Directory.CreateDirectory(outFileName);
+ _SetTimes(outFileName, false);
+ }
+ else
+ {
+ // the dir exists, maybe we want to overwrite times.
+ if (ExtractExistingFile == ExtractExistingFileAction.OverwriteSilently)
+ _SetTimes(outFileName, false);
+ }
+ return true; // true == all done, caller will return
+ }
+ return false; // false == work to do by caller.
+ }
+
+ if (outstream != null)
+ {
+ outFileName = null;
+ if ((IsDirectory) || (FileName.EndsWith("/")))
+ {
+ // extract a directory to streamwriter? nothing to do!
+ return true; // true == all done! caller can return
+ }
+ return false;
+ }
+
+ throw new ArgumentNullException("outstream");
+ }
+
+
+ #endregion
+
+ }
+}
--- /dev/null
+// ZipEntry.Read.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009-2011 Dino Chiesa
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-July-09 21:31:28>
+//
+// ------------------------------------------------------------------
+//
+// This module defines logic for Reading the ZipEntry from a
+// zip file.
+//
+// ------------------------------------------------------------------
+
+
+using System;
+using System.IO;
+
+namespace Ionic.Zip
+{
+ internal partial class ZipEntry
+ {
+ private int _readExtraDepth;
+ private void ReadExtraField()
+ {
+ _readExtraDepth++;
+ // workitem 8098: ok (restore)
+ long posn = this.ArchiveStream.Position;
+ this.ArchiveStream.Seek(this._RelativeOffsetOfLocalHeader, SeekOrigin.Begin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(this.ArchiveStream);
+
+ byte[] block = new byte[30];
+ this.ArchiveStream.Read(block, 0, block.Length);
+ int i = 26;
+ Int16 filenameLength = (short)(block[i++] + block[i++] * 256);
+ Int16 extraFieldLength = (short)(block[i++] + block[i++] * 256);
+
+ // workitem 8098: ok (relative)
+ this.ArchiveStream.Seek(filenameLength, SeekOrigin.Current);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(this.ArchiveStream);
+
+ ProcessExtraField(this.ArchiveStream, extraFieldLength);
+
+ // workitem 8098: ok (restore)
+ this.ArchiveStream.Seek(posn, SeekOrigin.Begin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(this.ArchiveStream);
+ _readExtraDepth--;
+ }
+
+
+ private static bool ReadHeader(ZipEntry ze, System.Text.Encoding defaultEncoding)
+ {
+ int bytesRead = 0;
+
+ // change for workitem 8098
+ ze._RelativeOffsetOfLocalHeader = ze.ArchiveStream.Position;
+
+ int signature = Ionic.Zip.SharedUtilities.ReadEntrySignature(ze.ArchiveStream);
+ bytesRead += 4;
+
+ // Return false if this is not a local file header signature.
+ if (ZipEntry.IsNotValidSig(signature))
+ {
+ // Getting "not a ZipEntry signature" is not always wrong or an error.
+ // This will happen after the last entry in a zipfile. In that case, we
+ // expect to read :
+ // a ZipDirEntry signature (if a non-empty zip file) or
+ // a ZipConstants.EndOfCentralDirectorySignature.
+ //
+ // Anything else is a surprise.
+
+ ze.ArchiveStream.Seek(-4, SeekOrigin.Current); // unread the signature
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(ze.ArchiveStream);
+ if (ZipEntry.IsNotValidZipDirEntrySig(signature) && (signature != ZipConstants.EndOfCentralDirectorySignature))
+ {
+ throw new BadReadException(String.Format(" Bad signature (0x{0:X8}) at position 0x{1:X8}", signature, ze.ArchiveStream.Position));
+ }
+ return false;
+ }
+
+ byte[] block = new byte[26];
+ int n = ze.ArchiveStream.Read(block, 0, block.Length);
+ if (n != block.Length) return false;
+ bytesRead += n;
+
+ int i = 0;
+ ze._VersionNeeded = (Int16)(block[i++] + block[i++] * 256);
+ ze._BitField = (Int16)(block[i++] + block[i++] * 256);
+ ze._CompressionMethod_FromZipFile = ze._CompressionMethod = (Int16)(block[i++] + block[i++] * 256);
+ ze._TimeBlob = block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256;
+ // transform the time data into something usable (a DateTime)
+ ze._LastModified = Ionic.Zip.SharedUtilities.PackedToDateTime(ze._TimeBlob);
+ ze._timestamp |= ZipEntryTimestamp.DOS;
+
+ if ((ze._BitField & 0x01) == 0x01)
+ {
+ ze._Encryption_FromZipFile = ze._Encryption = EncryptionAlgorithm.PkzipWeak; // this *may* change after processing the Extra field
+ ze._sourceIsEncrypted = true;
+ }
+
+ // NB: if ((ze._BitField & 0x0008) != 0x0008), then the Compressed, uncompressed and
+ // CRC values are not true values; the true values will follow the entry data.
+ // But, regardless of the status of bit 3 in the bitfield, the slots for
+ // the three amigos may contain marker values for ZIP64. So we must read them.
+ {
+ ze._Crc32 = (Int32)(block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256);
+ ze._CompressedSize = (uint)(block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256);
+ ze._UncompressedSize = (uint)(block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256);
+
+ if ((uint)ze._CompressedSize == 0xFFFFFFFF ||
+ (uint)ze._UncompressedSize == 0xFFFFFFFF)
+
+ ze._InputUsesZip64 = true;
+ }
+
+ Int16 filenameLength = (short)(block[i++] + block[i++] * 256);
+ Int16 extraFieldLength = (short)(block[i++] + block[i++] * 256);
+
+ block = new byte[filenameLength];
+ n = ze.ArchiveStream.Read(block, 0, block.Length);
+ bytesRead += n;
+
+ // if the UTF8 bit is set for this entry, override the
+ // encoding the application requested.
+
+ if ((ze._BitField & 0x0800) == 0x0800)
+ {
+ // workitem 12744
+ ze.AlternateEncoding = System.Text.Encoding.UTF8;
+ ze.AlternateEncodingUsage = ZipOption.Always;
+ }
+
+ // need to use this form of GetString() for .NET CF
+ ze._FileNameInArchive = ze.AlternateEncoding.GetString(block, 0, block.Length);
+
+ // workitem 6898
+ if (ze._FileNameInArchive.EndsWith("/")) ze.MarkAsDirectory();
+
+ bytesRead += ze.ProcessExtraField(ze.ArchiveStream, extraFieldLength);
+
+ ze._LengthOfTrailer = 0;
+
+ // workitem 6607 - don't read for directories
+ // actually get the compressed size and CRC if necessary
+ if (!ze._FileNameInArchive.EndsWith("/") && (ze._BitField & 0x0008) == 0x0008)
+ {
+ // This descriptor exists only if bit 3 of the general
+ // purpose bit flag is set (see below). It is byte aligned
+ // and immediately follows the last byte of compressed data,
+ // as well as any encryption trailer, as with AES.
+ // This descriptor is used only when it was not possible to
+ // seek in the output .ZIP file, e.g., when the output .ZIP file
+ // was standard output or a non-seekable device. For ZIP64(tm) format
+ // archives, the compressed and uncompressed sizes are 8 bytes each.
+
+ // workitem 8098: ok (restore)
+ long posn = ze.ArchiveStream.Position;
+
+ // Here, we're going to loop until we find a ZipEntryDataDescriptorSignature and
+ // a consistent data record after that. To be consistent, the data record must
+ // indicate the length of the entry data.
+ bool wantMore = true;
+ long SizeOfDataRead = 0;
+ int tries = 0;
+ while (wantMore)
+ {
+ tries++;
+ // We call the FindSignature shared routine to find the specified signature
+ // in the already-opened zip archive, starting from the current cursor
+ // position in that filestream. If we cannot find the signature, then the
+ // routine returns -1, and the ReadHeader() method returns false,
+ // indicating we cannot read a legal entry header. If we have found it,
+ // then the FindSignature() method returns the number of bytes in the
+ // stream we had to seek forward, to find the sig. We need this to
+ // determine if the zip entry is valid, later.
+
+ if (ze._container.ZipFile != null)
+ ze._container.ZipFile.OnReadBytes(ze);
+
+ long d = Ionic.Zip.SharedUtilities.FindSignature(ze.ArchiveStream, ZipConstants.ZipEntryDataDescriptorSignature);
+ if (d == -1) return false;
+
+ // total size of data read (through all loops of this).
+ SizeOfDataRead += d;
+
+ if (ze._InputUsesZip64)
+ {
+ // read 1x 4-byte (CRC) and 2x 8-bytes (Compressed Size, Uncompressed Size)
+ block = new byte[20];
+ n = ze.ArchiveStream.Read(block, 0, block.Length);
+ if (n != 20) return false;
+
+ // do not increment bytesRead - it is for entry header only.
+ // the data we have just read is a footer (falls after the file data)
+ //bytesRead += n;
+
+ i = 0;
+ ze._Crc32 = (Int32)(block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256);
+ ze._CompressedSize = BitConverter.ToInt64(block, i);
+ i += 8;
+ ze._UncompressedSize = BitConverter.ToInt64(block, i);
+ i += 8;
+
+ ze._LengthOfTrailer += 24; // bytes including sig, CRC, Comp and Uncomp sizes
+ }
+ else
+ {
+ // read 3x 4-byte fields (CRC, Compressed Size, Uncompressed Size)
+ block = new byte[12];
+ n = ze.ArchiveStream.Read(block, 0, block.Length);
+ if (n != 12) return false;
+
+ // do not increment bytesRead - it is for entry header only.
+ // the data we have just read is a footer (falls after the file data)
+ //bytesRead += n;
+
+ i = 0;
+ ze._Crc32 = (Int32)(block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256);
+ ze._CompressedSize = (uint)(block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256);
+ ze._UncompressedSize = (uint)(block[i++] + block[i++] * 256 + block[i++] * 256 * 256 + block[i++] * 256 * 256 * 256);
+
+ ze._LengthOfTrailer += 16; // bytes including sig, CRC, Comp and Uncomp sizes
+
+ }
+
+ wantMore = (SizeOfDataRead != ze._CompressedSize);
+
+ if (wantMore)
+ {
+ // Seek back to un-read the last 12 bytes - maybe THEY contain
+ // the ZipEntryDataDescriptorSignature.
+ // (12 bytes for the CRC, Comp and Uncomp size.)
+ ze.ArchiveStream.Seek(-12, SeekOrigin.Current);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(ze.ArchiveStream);
+
+ // Adjust the size to account for the false signature read in
+ // FindSignature().
+ SizeOfDataRead += 4;
+ }
+ }
+
+ // seek back to previous position, to prepare to read file data
+ // workitem 8098: ok (restore)
+ ze.ArchiveStream.Seek(posn, SeekOrigin.Begin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(ze.ArchiveStream);
+ }
+
+ ze._CompressedFileDataSize = ze._CompressedSize;
+
+
+ // bit 0 set indicates that some kind of encryption is in use
+ if ((ze._BitField & 0x01) == 0x01)
+ {
+#if AESCRYPTO
+ if (ze.Encryption == EncryptionAlgorithm.WinZipAes128 ||
+ ze.Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ int bits = ZipEntry.GetKeyStrengthInBits(ze._Encryption_FromZipFile);
+ // read in the WinZip AES metadata: salt + PV. 18 bytes for AES256. 10 bytes for AES128.
+ ze._aesCrypto_forExtract = WinZipAesCrypto.ReadFromStream(null, bits, ze.ArchiveStream);
+ bytesRead += ze._aesCrypto_forExtract.SizeOfEncryptionMetadata - 10; // MAC (follows crypto bytes)
+ // according to WinZip, the CompressedSize includes the AES Crypto framing data.
+ ze._CompressedFileDataSize -= ze._aesCrypto_forExtract.SizeOfEncryptionMetadata;
+ ze._LengthOfTrailer += 10; // MAC
+ }
+ else
+#endif
+ {
+ // read in the header data for "weak" encryption
+ ze._WeakEncryptionHeader = new byte[12];
+ bytesRead += ZipEntry.ReadWeakEncryptionHeader(ze._archiveStream, ze._WeakEncryptionHeader);
+ // decrease the filedata size by 12 bytes
+ ze._CompressedFileDataSize -= 12;
+ }
+ }
+
+ // Remember the size of the blob for this entry.
+ // We also have the starting position in the stream for this entry.
+ ze._LengthOfHeader = bytesRead;
+ ze._TotalEntrySize = ze._LengthOfHeader + ze._CompressedFileDataSize + ze._LengthOfTrailer;
+
+
+ // We've read in the regular entry header, the extra field, and any
+ // encryption header. The pointer in the file is now at the start of the
+ // filedata, which is potentially compressed and encrypted. Just ahead in
+ // the file, there are _CompressedFileDataSize bytes of data, followed by
+ // potentially a non-zero length trailer, consisting of optionally, some
+ // encryption stuff (10 byte MAC for AES), and the bit-3 trailer (16 or 24
+ // bytes).
+
+ return true;
+ }
+
+
+
+ internal static int ReadWeakEncryptionHeader(Stream s, byte[] buffer)
+ {
+ // PKZIP encrypts the compressed data stream. Encrypted files must
+ // be decrypted before they can be extracted.
+
+ // Each PKZIP-encrypted file has an extra 12 bytes stored at the start of the data
+ // area defining the encryption header for that file. The encryption header is
+ // originally set to random values, and then itself encrypted, using three, 32-bit
+ // keys. The key values are initialized using the supplied encryption password.
+ // After each byte is encrypted, the keys are then updated using pseudo-random
+ // number generation techniques in combination with the same CRC-32 algorithm used
+ // in PKZIP and implemented in the CRC32.cs module in this project.
+
+ // read the 12-byte encryption header
+ int additionalBytesRead = s.Read(buffer, 0, 12);
+ if (additionalBytesRead != 12)
+ throw new ZipException(String.Format("Unexpected end of data at position 0x{0:X8}", s.Position));
+
+ return additionalBytesRead;
+ }
+
+
+
+ private static bool IsNotValidSig(int signature)
+ {
+ return (signature != ZipConstants.ZipEntrySignature);
+ }
+
+
+ /// <summary>
+ /// Reads one <c>ZipEntry</c> from the given stream. The content for
+ /// the entry does not get decompressed or decrypted. This method
+ /// basically reads metadata, and seeks.
+ /// </summary>
+ /// <param name="zc">the ZipContainer this entry belongs to.</param>
+ /// <param name="first">
+ /// true of this is the first entry being read from the stream.
+ /// </param>
+ /// <returns>the <c>ZipEntry</c> read from the stream.</returns>
+ internal static ZipEntry ReadEntry(ZipContainer zc, bool first)
+ {
+ ZipFile zf = zc.ZipFile;
+ Stream s = zc.ReadStream;
+ System.Text.Encoding defaultEncoding = zc.AlternateEncoding;
+ ZipEntry entry = new ZipEntry();
+ entry._Source = ZipEntrySource.ZipFile;
+ entry._container = zc;
+ entry._archiveStream = s;
+ if (zf != null)
+ zf.OnReadEntry(true, null);
+
+ if (first) HandlePK00Prefix(s);
+
+ // Read entry header, including any encryption header
+ if (!ReadHeader(entry, defaultEncoding)) return null;
+
+ // Store the position in the stream for this entry
+ // change for workitem 8098
+ entry.__FileDataPosition = entry.ArchiveStream.Position;
+
+ // seek past the data without reading it. We will read on Extract()
+ s.Seek(entry._CompressedFileDataSize + entry._LengthOfTrailer, SeekOrigin.Current);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(s);
+
+ // ReadHeader moves the file pointer to the end of the entry header,
+ // as well as any encryption header.
+
+ // CompressedFileDataSize includes:
+ // the maybe compressed, maybe encrypted file data
+ // the encryption trailer, if any
+ // the bit 3 descriptor, if any
+
+ // workitem 5306
+ // http://www.codeplex.com/DotNetZip/WorkItem/View.aspx?WorkItemId=5306
+ HandleUnexpectedDataDescriptor(entry);
+
+ if (zf != null)
+ {
+ zf.OnReadBytes(entry);
+ zf.OnReadEntry(false, entry);
+ }
+
+ return entry;
+ }
+
+
+ internal static void HandlePK00Prefix(Stream s)
+ {
+ // in some cases, the zip file begins with "PK00". This is a throwback and is rare,
+ // but we handle it anyway. We do not change behavior based on it.
+ uint datum = (uint)Ionic.Zip.SharedUtilities.ReadInt(s);
+ if (datum != ZipConstants.PackedToRemovableMedia)
+ {
+ s.Seek(-4, SeekOrigin.Current); // unread the block
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(s);
+ }
+ }
+
+
+
+ private static void HandleUnexpectedDataDescriptor(ZipEntry entry)
+ {
+ Stream s = entry.ArchiveStream;
+
+ // In some cases, the "data descriptor" is present, without a signature, even when
+ // bit 3 of the BitField is NOT SET. This is the CRC, followed
+ // by the compressed length and the uncompressed length (4 bytes for each
+ // of those three elements). Need to check that here.
+ //
+ uint datum = (uint)Ionic.Zip.SharedUtilities.ReadInt(s);
+ if (datum == entry._Crc32)
+ {
+ int sz = Ionic.Zip.SharedUtilities.ReadInt(s);
+ if (sz == entry._CompressedSize)
+ {
+ sz = Ionic.Zip.SharedUtilities.ReadInt(s);
+ if (sz == entry._UncompressedSize)
+ {
+ // ignore everything and discard it.
+ }
+ else
+ {
+ s.Seek(-12, SeekOrigin.Current); // unread the three blocks
+
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(s);
+ }
+ }
+ else
+ {
+ s.Seek(-8, SeekOrigin.Current); // unread the two blocks
+
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(s);
+ }
+ }
+ else
+ {
+ s.Seek(-4, SeekOrigin.Current); // unread the block
+
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(s);
+ }
+ }
+
+
+ /// <summary>
+ /// Finds a particular segment in the given extra field.
+ /// This is used when modifying a previously-generated
+ /// extra field, in particular when removing the AES crypto
+ /// segment in the extra field.
+ /// </summary>
+ static internal int FindExtraFieldSegment(byte[] extra, int offx, UInt16 targetHeaderId)
+ {
+ int j = offx;
+ while (j + 3 < extra.Length)
+ {
+ UInt16 headerId = (UInt16)(extra[j++] + extra[j++] * 256);
+ if (headerId == targetHeaderId) return j-2;
+
+ // else advance to next segment
+ Int16 dataSize = (short)(extra[j++] + extra[j++] * 256);
+ j+= dataSize;
+ }
+
+ return -1;
+ }
+
+
+ /// <summary>
+ /// At current cursor position in the stream, read the extra
+ /// field, and set the properties on the ZipEntry instance
+ /// appropriately. This can be called when processing the
+ /// Extra field in the Central Directory, or in the local
+ /// header.
+ /// </summary>
+ internal int ProcessExtraField(Stream s, Int16 extraFieldLength)
+ {
+ int additionalBytesRead = 0;
+ if (extraFieldLength > 0)
+ {
+ byte[] buffer = this._Extra = new byte[extraFieldLength];
+ additionalBytesRead = s.Read(buffer, 0, buffer.Length);
+ long posn = s.Position - additionalBytesRead;
+ int j = 0;
+ while (j + 3 < buffer.Length)
+ {
+ int start = j;
+ UInt16 headerId = (UInt16)(buffer[j++] + buffer[j++] * 256);
+ Int16 dataSize = (short)(buffer[j++] + buffer[j++] * 256);
+
+ switch (headerId)
+ {
+ case 0x000a: // NTFS ctime, atime, mtime
+ j = ProcessExtraFieldWindowsTimes(buffer, j, dataSize, posn);
+ break;
+
+ case 0x5455: // Unix ctime, atime, mtime
+ j = ProcessExtraFieldUnixTimes(buffer, j, dataSize, posn);
+ break;
+
+ case 0x5855: // Info-zip Extra field (outdated)
+ // This is outdated, so the field is supported on
+ // read only.
+ j = ProcessExtraFieldInfoZipTimes(buffer, j, dataSize, posn);
+ break;
+
+ case 0x7855: // Unix uid/gid
+ // ignored. DotNetZip does not handle this field.
+ break;
+
+ case 0x7875: // ??
+ // ignored. I could not find documentation on this field,
+ // though it appears in some zip files.
+ break;
+
+ case 0x0001: // ZIP64
+ j = ProcessExtraFieldZip64(buffer, j, dataSize, posn);
+ break;
+
+#if AESCRYPTO
+ case 0x9901: // WinZip AES encryption is in use. (workitem 6834)
+ // we will handle this extra field only if compressionmethod is 0x63
+ j = ProcessExtraFieldWinZipAes(buffer, j, dataSize, posn);
+ break;
+#endif
+ case 0x0017: // workitem 7968: handle PKWare Strong encryption header
+ j = ProcessExtraFieldPkwareStrongEncryption(buffer, j);
+ break;
+ }
+
+ // move to the next Header in the extra field
+ j = start + dataSize + 4;
+ }
+ }
+ return additionalBytesRead;
+ }
+
+ private int ProcessExtraFieldPkwareStrongEncryption(byte[] Buffer, int j)
+ {
+ // Value Size Description
+ // ----- ---- -----------
+ // 0x0017 2 bytes Tag for this "extra" block type
+ // TSize 2 bytes Size of data that follows
+ // Format 2 bytes Format definition for this record
+ // AlgID 2 bytes Encryption algorithm identifier
+ // Bitlen 2 bytes Bit length of encryption key
+ // Flags 2 bytes Processing flags
+ // CertData TSize-8 Certificate decryption extra field data
+ // (refer to the explanation for CertData
+ // in the section describing the
+ // Certificate Processing Method under
+ // the Strong Encryption Specification)
+
+ j += 2;
+ _UnsupportedAlgorithmId = (UInt16)(Buffer[j++] + Buffer[j++] * 256);
+ _Encryption_FromZipFile = _Encryption = EncryptionAlgorithm.Unsupported;
+
+ // DotNetZip doesn't support this algorithm, but we don't need to throw
+ // here. we might just be reading the archive, which is fine. We'll
+ // need to throw if Extract() is called.
+
+ return j;
+ }
+
+
+#if AESCRYPTO
+ private int ProcessExtraFieldWinZipAes(byte[] buffer, int j, Int16 dataSize, long posn)
+ {
+ if (this._CompressionMethod == 0x0063)
+ {
+ if ((this._BitField & 0x01) != 0x01)
+ throw new BadReadException(String.Format(" Inconsistent metadata at position 0x{0:X16}", posn));
+
+ this._sourceIsEncrypted = true;
+
+ //this._aesCrypto = new WinZipAesCrypto(this);
+ // see spec at http://www.winzip.com/aes_info.htm
+ if (dataSize != 7)
+ throw new BadReadException(String.Format(" Inconsistent size (0x{0:X4}) in WinZip AES field at position 0x{1:X16}", dataSize, posn));
+
+ this._WinZipAesMethod = BitConverter.ToInt16(buffer, j);
+ j += 2;
+ if (this._WinZipAesMethod != 0x01 && this._WinZipAesMethod != 0x02)
+ throw new BadReadException(String.Format(" Unexpected vendor version number (0x{0:X4}) for WinZip AES metadata at position 0x{1:X16}",
+ this._WinZipAesMethod, posn));
+
+ Int16 vendorId = BitConverter.ToInt16(buffer, j);
+ j += 2;
+ if (vendorId != 0x4541)
+ throw new BadReadException(String.Format(" Unexpected vendor ID (0x{0:X4}) for WinZip AES metadata at position 0x{1:X16}", vendorId, posn));
+
+ int keystrength = (buffer[j] == 1) ? 128 : (buffer[j] == 3) ? 256 : -1;
+ if (keystrength < 0)
+ throw new BadReadException(String.Format("Invalid key strength ({0})", keystrength));
+
+ _Encryption_FromZipFile = this._Encryption = (keystrength == 128)
+ ? EncryptionAlgorithm.WinZipAes128
+ : EncryptionAlgorithm.WinZipAes256;
+
+ j++;
+
+ // set the actual compression method
+ this._CompressionMethod_FromZipFile =
+ this._CompressionMethod = BitConverter.ToInt16(buffer, j);
+ j += 2; // for the next segment of the extra field
+ }
+ return j;
+ }
+
+#endif
+
+ private delegate T Func<T>();
+
+ private int ProcessExtraFieldZip64(byte[] buffer, int j, Int16 dataSize, long posn)
+ {
+ // The PKWare spec says that any of {UncompressedSize, CompressedSize,
+ // RelativeOffset} exceeding 0xFFFFFFFF can lead to the ZIP64 header,
+ // and the ZIP64 header may contain one or more of those. If the
+ // values are present, they will be found in the prescribed order.
+ // There may also be a 4-byte "disk start number."
+ // This means that the DataSize must be 28 bytes or less.
+
+ this._InputUsesZip64 = true;
+
+ // workitem 7941: check datasize before reading.
+ if (dataSize > 28)
+ throw new BadReadException(String.Format(" Inconsistent size (0x{0:X4}) for ZIP64 extra field at position 0x{1:X16}",
+ dataSize, posn));
+ int remainingData = dataSize;
+
+ var slurp = new Func<Int64>( () => {
+ if (remainingData < 8)
+ throw new BadReadException(String.Format(" Missing data for ZIP64 extra field, position 0x{0:X16}", posn));
+ var x = BitConverter.ToInt64(buffer, j);
+ j+= 8;
+ remainingData -= 8;
+ return x;
+ });
+
+ if (this._UncompressedSize == 0xFFFFFFFF)
+ this._UncompressedSize = slurp();
+
+ if (this._CompressedSize == 0xFFFFFFFF)
+ this._CompressedSize = slurp();
+
+ if (this._RelativeOffsetOfLocalHeader == 0xFFFFFFFF)
+ this._RelativeOffsetOfLocalHeader = slurp();
+
+ // Ignore anything else. Potentially there are 4 more bytes for the
+ // disk start number. DotNetZip currently doesn't handle multi-disk
+ // archives.
+ return j;
+ }
+
+
+ private int ProcessExtraFieldInfoZipTimes(byte[] buffer, int j, Int16 dataSize, long posn)
+ {
+ if (dataSize != 12 && dataSize != 8)
+ throw new BadReadException(String.Format(" Unexpected size (0x{0:X4}) for InfoZip v1 extra field at position 0x{1:X16}", dataSize, posn));
+
+ Int32 timet = BitConverter.ToInt32(buffer, j);
+ this._Mtime = _unixEpoch.AddSeconds(timet);
+ j += 4;
+
+ timet = BitConverter.ToInt32(buffer, j);
+ this._Atime = _unixEpoch.AddSeconds(timet);
+ j += 4;
+
+ this._Ctime = DateTime.UtcNow;
+
+ _ntfsTimesAreSet = true;
+ _timestamp |= ZipEntryTimestamp.InfoZip1; return j;
+ }
+
+
+
+ private int ProcessExtraFieldUnixTimes(byte[] buffer, int j, Int16 dataSize, long posn)
+ {
+ // The Unix filetimes are 32-bit unsigned integers,
+ // storing seconds since Unix epoch.
+
+ if (dataSize != 13 && dataSize != 9 && dataSize != 5)
+ throw new BadReadException(String.Format(" Unexpected size (0x{0:X4}) for Extended Timestamp extra field at position 0x{1:X16}", dataSize, posn));
+
+ int remainingData = dataSize;
+
+ var slurp = new Func<DateTime>( () => {
+ Int32 timet = BitConverter.ToInt32(buffer, j);
+ j += 4;
+ remainingData -= 4;
+ return _unixEpoch.AddSeconds(timet);
+ });
+
+ if (dataSize == 13 || _readExtraDepth > 0)
+ {
+ byte flag = buffer[j++];
+ remainingData--;
+
+ if ((flag & 0x0001) != 0 && remainingData >= 4)
+ this._Mtime = slurp();
+
+ this._Atime = ((flag & 0x0002) != 0 && remainingData >= 4)
+ ? slurp()
+ : DateTime.UtcNow;
+
+ this._Ctime = ((flag & 0x0004) != 0 && remainingData >= 4)
+ ? slurp()
+ :DateTime.UtcNow;
+
+ _timestamp |= ZipEntryTimestamp.Unix;
+ _ntfsTimesAreSet = true;
+ _emitUnixTimes = true;
+ }
+ else
+ ReadExtraField(); // will recurse
+
+ return j;
+ }
+
+
+ private int ProcessExtraFieldWindowsTimes(byte[] buffer, int j, Int16 dataSize, long posn)
+ {
+ // The NTFS filetimes are 64-bit unsigned integers, stored in Intel
+ // (least significant byte first) byte order. They are expressed as the
+ // number of 1.0E-07 seconds (1/10th microseconds!) past WinNT "epoch",
+ // which is "01-Jan-1601 00:00:00 UTC".
+ //
+ // HeaderId 2 bytes 0x000a == NTFS stuff
+ // Datasize 2 bytes ?? (usually 32)
+ // reserved 4 bytes ??
+ // timetag 2 bytes 0x0001 == time
+ // size 2 bytes 24 == 8 bytes each for ctime, mtime, atime
+ // mtime 8 bytes win32 ticks since win32epoch
+ // atime 8 bytes win32 ticks since win32epoch
+ // ctime 8 bytes win32 ticks since win32epoch
+
+ if (dataSize != 32)
+ throw new BadReadException(String.Format(" Unexpected size (0x{0:X4}) for NTFS times extra field at position 0x{1:X16}", dataSize, posn));
+
+ j += 4; // reserved
+ Int16 timetag = (Int16)(buffer[j] + buffer[j + 1] * 256);
+ Int16 addlsize = (Int16)(buffer[j + 2] + buffer[j + 3] * 256);
+ j += 4; // tag and size
+
+ if (timetag == 0x0001 && addlsize == 24)
+ {
+ Int64 z = BitConverter.ToInt64(buffer, j);
+ this._Mtime = DateTime.FromFileTimeUtc(z);
+ j += 8;
+
+ // At this point the library *could* set the LastModified value
+ // to coincide with the Mtime value. In theory, they refer to
+ // the same property of the file, and should be the same anyway,
+ // allowing for differences in precision. But they are
+ // independent quantities in the zip archive, and this library
+ // will keep them separate in the object model. There is no ill
+ // effect from this, because as files are extracted, the
+ // higher-precision value (Mtime) is used if it is present.
+ // Apps may wish to compare the Mtime versus LastModified
+ // values, but any difference when both are present is not
+ // germaine to the correctness of the library. but note: when
+ // explicitly setting either value, both are set. See the setter
+ // for LastModified or the SetNtfsTimes() method.
+
+ z = BitConverter.ToInt64(buffer, j);
+ this._Atime = DateTime.FromFileTimeUtc(z);
+ j += 8;
+
+ z = BitConverter.ToInt64(buffer, j);
+ this._Ctime = DateTime.FromFileTimeUtc(z);
+ j += 8;
+
+ _ntfsTimesAreSet = true;
+ _timestamp |= ZipEntryTimestamp.Windows;
+ _emitNtfsTimes = true;
+ }
+ return j;
+ }
+
+
+ }
+}
--- /dev/null
+//#define Trace
+
+// ZipEntry.Write.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009-2011 Dino Chiesa
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// Last Saved: <2011-July-30 14:55:47>
+//
+// ------------------------------------------------------------------
+//
+// This module defines logic for writing (saving) the ZipEntry into a
+// zip file.
+//
+// ------------------------------------------------------------------
+
+
+using System;
+using System.IO;
+using RE = System.Text.RegularExpressions;
+
+namespace Ionic.Zip
+{
+ internal partial class ZipEntry
+ {
+ internal void WriteCentralDirectoryEntry(Stream s)
+ {
+ byte[] bytes = new byte[4096];
+ int i = 0;
+ // signature
+ bytes[i++] = (byte)(ZipConstants.ZipDirEntrySignature & 0x000000FF);
+ bytes[i++] = (byte)((ZipConstants.ZipDirEntrySignature & 0x0000FF00) >> 8);
+ bytes[i++] = (byte)((ZipConstants.ZipDirEntrySignature & 0x00FF0000) >> 16);
+ bytes[i++] = (byte)((ZipConstants.ZipDirEntrySignature & 0xFF000000) >> 24);
+
+ // Version Made By
+ // workitem 7071
+ // We must not overwrite the VersionMadeBy field when writing out a zip
+ // archive. The VersionMadeBy tells the zip reader the meaning of the
+ // File attributes. Overwriting the VersionMadeBy will result in
+ // inconsistent metadata. Consider the scenario where the application
+ // opens and reads a zip file that had been created on Linux. Then the
+ // app adds one file to the Zip archive, and saves it. The file
+ // attributes for all the entries added on Linux will be significant for
+ // Linux. Therefore the VersionMadeBy for those entries must not be
+ // changed. Only the entries that are actually created on Windows NTFS
+ // should get the VersionMadeBy indicating Windows/NTFS.
+ bytes[i++] = (byte)(_VersionMadeBy & 0x00FF);
+ bytes[i++] = (byte)((_VersionMadeBy & 0xFF00) >> 8);
+
+ // Apparently we want to duplicate the extra field here; we cannot
+ // simply zero it out and assume tools and apps will use the right one.
+
+ ////Int16 extraFieldLengthSave = (short)(_EntryHeader[28] + _EntryHeader[29] * 256);
+ ////_EntryHeader[28] = 0;
+ ////_EntryHeader[29] = 0;
+
+ // Version Needed, Bitfield, compression method, lastmod,
+ // crc, compressed and uncompressed sizes, filename length and extra field length.
+ // These are all present in the local file header, but they may be zero values there.
+ // So we cannot just copy them.
+
+ // workitem 11969: Version Needed To Extract in central directory must be
+ // the same as the local entry or MS .NET System.IO.Zip fails read.
+ Int16 vNeeded = (Int16)(VersionNeeded != 0 ? VersionNeeded : 20);
+ // workitem 12964
+ if (_OutputUsesZip64==null)
+ {
+ // a zipentry in a zipoutputstream, with zero bytes written
+ _OutputUsesZip64 = new Nullable<bool>(_container.Zip64 == Zip64Option.Always);
+ }
+
+ Int16 versionNeededToExtract = (Int16)(_OutputUsesZip64.Value ? 45 : vNeeded);
+#if BZIP
+ if (this.CompressionMethod == Ionic.Zip.CompressionMethod.BZip2)
+ versionNeededToExtract = 46;
+#endif
+
+ bytes[i++] = (byte)(versionNeededToExtract & 0x00FF);
+ bytes[i++] = (byte)((versionNeededToExtract & 0xFF00) >> 8);
+
+ bytes[i++] = (byte)(_BitField & 0x00FF);
+ bytes[i++] = (byte)((_BitField & 0xFF00) >> 8);
+
+ bytes[i++] = (byte)(_CompressionMethod & 0x00FF);
+ bytes[i++] = (byte)((_CompressionMethod & 0xFF00) >> 8);
+
+#if AESCRYPTO
+ if (Encryption == EncryptionAlgorithm.WinZipAes128 ||
+ Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ i -= 2;
+ bytes[i++] = 0x63;
+ bytes[i++] = 0;
+ }
+#endif
+
+ bytes[i++] = (byte)(_TimeBlob & 0x000000FF);
+ bytes[i++] = (byte)((_TimeBlob & 0x0000FF00) >> 8);
+ bytes[i++] = (byte)((_TimeBlob & 0x00FF0000) >> 16);
+ bytes[i++] = (byte)((_TimeBlob & 0xFF000000) >> 24);
+ bytes[i++] = (byte)(_Crc32 & 0x000000FF);
+ bytes[i++] = (byte)((_Crc32 & 0x0000FF00) >> 8);
+ bytes[i++] = (byte)((_Crc32 & 0x00FF0000) >> 16);
+ bytes[i++] = (byte)((_Crc32 & 0xFF000000) >> 24);
+
+ int j = 0;
+ if (_OutputUsesZip64.Value)
+ {
+ // CompressedSize (Int32) and UncompressedSize - all 0xFF
+ for (j = 0; j < 8; j++)
+ bytes[i++] = 0xFF;
+ }
+ else
+ {
+ bytes[i++] = (byte)(_CompressedSize & 0x000000FF);
+ bytes[i++] = (byte)((_CompressedSize & 0x0000FF00) >> 8);
+ bytes[i++] = (byte)((_CompressedSize & 0x00FF0000) >> 16);
+ bytes[i++] = (byte)((_CompressedSize & 0xFF000000) >> 24);
+
+ bytes[i++] = (byte)(_UncompressedSize & 0x000000FF);
+ bytes[i++] = (byte)((_UncompressedSize & 0x0000FF00) >> 8);
+ bytes[i++] = (byte)((_UncompressedSize & 0x00FF0000) >> 16);
+ bytes[i++] = (byte)((_UncompressedSize & 0xFF000000) >> 24);
+ }
+
+ byte[] fileNameBytes = GetEncodedFileNameBytes();
+ Int16 filenameLength = (Int16)fileNameBytes.Length;
+ bytes[i++] = (byte)(filenameLength & 0x00FF);
+ bytes[i++] = (byte)((filenameLength & 0xFF00) >> 8);
+
+ // do this again because now we have real data
+ _presumeZip64 = _OutputUsesZip64.Value;
+
+ // workitem 11131
+ //
+ // cannot generate the extra field again, here's why: In the case of a
+ // zero-byte entry, which uses encryption, DotNetZip will "remove" the
+ // encryption from the entry. It does this in PostProcessOutput; it
+ // modifies the entry header, and rewrites it, resetting the Bitfield
+ // (one bit indicates encryption), and potentially resetting the
+ // compression method - for AES the Compression method is 0x63, and it
+ // would get reset to zero (no compression). It then calls SetLength()
+ // to truncate the stream to remove the encryption header (12 bytes for
+ // AES256). But, it leaves the previously-generated "Extra Field"
+ // metadata (11 bytes) for AES in the entry header. This extra field
+ // data is now "orphaned" - it refers to AES encryption when in fact no
+ // AES encryption is used. But no problem, the PKWARE spec says that
+ // unrecognized extra fields can just be ignored. ok. After "removal"
+ // of AES encryption, the length of the Extra Field can remains the
+ // same; it's just that there will be 11 bytes in there that previously
+ // pertained to AES which are now unused. Even the field code is still
+ // there, but it will be unused by readers, as the encryption bit is not
+ // set.
+ //
+ // Re-calculating the Extra field now would produce a block that is 11
+ // bytes shorter, and that mismatch - between the extra field in the
+ // local header and the extra field in the Central Directory - would
+ // cause problems. (where? why? what problems?) So we can't do
+ // that. It's all good though, because though the content may have
+ // changed, the length definitely has not. Also, the _EntryHeader
+ // contains the "updated" extra field (after PostProcessOutput) at
+ // offset (30 + filenameLength).
+
+ _Extra = ConstructExtraField(true);
+
+ Int16 extraFieldLength = (Int16)((_Extra == null) ? 0 : _Extra.Length);
+ bytes[i++] = (byte)(extraFieldLength & 0x00FF);
+ bytes[i++] = (byte)((extraFieldLength & 0xFF00) >> 8);
+
+ // File (entry) Comment Length
+ // the _CommentBytes private field was set during WriteHeader()
+ int commentLength = (_CommentBytes == null) ? 0 : _CommentBytes.Length;
+
+ // the size of our buffer defines the max length of the comment we can write
+ if (commentLength + i > bytes.Length) commentLength = bytes.Length - i;
+ bytes[i++] = (byte)(commentLength & 0x00FF);
+ bytes[i++] = (byte)((commentLength & 0xFF00) >> 8);
+
+ // Disk number start
+ bool segmented = (this._container.ZipFile != null) &&
+ (this._container.ZipFile.MaxOutputSegmentSize != 0);
+ if (segmented) // workitem 13915
+ {
+ // Emit nonzero disknumber only if saving segmented archive.
+ bytes[i++] = (byte)(_diskNumber & 0x00FF);
+ bytes[i++] = (byte)((_diskNumber & 0xFF00) >> 8);
+ }
+ else
+ {
+ // If reading a segmneted archive and saving to a regular archive,
+ // ZipEntry._diskNumber will be non-zero but it should be saved as
+ // zero.
+ bytes[i++] = 0;
+ bytes[i++] = 0;
+ }
+
+ // internal file attrs
+ // workitem 7801
+ bytes[i++] = (byte)((_IsText) ? 1 : 0); // lo bit: filetype hint. 0=bin, 1=txt.
+ bytes[i++] = 0;
+
+ // external file attrs
+ // workitem 7071
+ bytes[i++] = (byte)(_ExternalFileAttrs & 0x000000FF);
+ bytes[i++] = (byte)((_ExternalFileAttrs & 0x0000FF00) >> 8);
+ bytes[i++] = (byte)((_ExternalFileAttrs & 0x00FF0000) >> 16);
+ bytes[i++] = (byte)((_ExternalFileAttrs & 0xFF000000) >> 24);
+
+ // workitem 11131
+ // relative offset of local header.
+ //
+ // If necessary to go to 64-bit value, then emit 0xFFFFFFFF,
+ // else write out the value.
+ //
+ // Even if zip64 is required for other reasons - number of the entry
+ // > 65534, or uncompressed size of the entry > MAX_INT32, the ROLH
+ // need not be stored in a 64-bit field .
+ if (_RelativeOffsetOfLocalHeader > 0xFFFFFFFFL) // _OutputUsesZip64.Value
+ {
+ bytes[i++] = 0xFF;
+ bytes[i++] = 0xFF;
+ bytes[i++] = 0xFF;
+ bytes[i++] = 0xFF;
+ }
+ else
+ {
+ bytes[i++] = (byte)(_RelativeOffsetOfLocalHeader & 0x000000FF);
+ bytes[i++] = (byte)((_RelativeOffsetOfLocalHeader & 0x0000FF00) >> 8);
+ bytes[i++] = (byte)((_RelativeOffsetOfLocalHeader & 0x00FF0000) >> 16);
+ bytes[i++] = (byte)((_RelativeOffsetOfLocalHeader & 0xFF000000) >> 24);
+ }
+
+ // actual filename
+ Buffer.BlockCopy(fileNameBytes, 0, bytes, i, filenameLength);
+ i += filenameLength;
+
+ // "Extra field"
+ if (_Extra != null)
+ {
+ // workitem 11131
+ //
+ // copy from EntryHeader if available - it may have been updated.
+ // if not, copy from Extra. This would be unnecessary if I just
+ // updated the Extra field when updating EntryHeader, in
+ // PostProcessOutput.
+
+ //?? I don't understand why I wouldn't want to just use
+ // the recalculated Extra field. ??
+
+ // byte[] h = _EntryHeader ?? _Extra;
+ // int offx = (h == _EntryHeader) ? 30 + filenameLength : 0;
+ // Buffer.BlockCopy(h, offx, bytes, i, extraFieldLength);
+ // i += extraFieldLength;
+
+ byte[] h = _Extra;
+ int offx = 0;
+ Buffer.BlockCopy(h, offx, bytes, i, extraFieldLength);
+ i += extraFieldLength;
+ }
+
+ // file (entry) comment
+ if (commentLength != 0)
+ {
+ // now actually write the comment itself into the byte buffer
+ Buffer.BlockCopy(_CommentBytes, 0, bytes, i, commentLength);
+ // for (j = 0; (j < commentLength) && (i + j < bytes.Length); j++)
+ // bytes[i + j] = _CommentBytes[j];
+ i += commentLength;
+ }
+
+ s.Write(bytes, 0, i);
+ }
+
+
+#if INFOZIP_UTF8
+ static private bool FileNameIsUtf8(char[] FileNameChars)
+ {
+ bool isUTF8 = false;
+ bool isUnicode = false;
+ for (int j = 0; j < FileNameChars.Length; j++)
+ {
+ byte[] b = System.BitConverter.GetBytes(FileNameChars[j]);
+ isUnicode |= (b.Length != 2);
+ isUnicode |= (b[1] != 0);
+ isUTF8 |= ((b[0] & 0x80) != 0);
+ }
+
+ return isUTF8;
+ }
+#endif
+
+
+ private byte[] ConstructExtraField(bool forCentralDirectory)
+ {
+ var listOfBlocks = new System.Collections.Generic.List<byte[]>();
+ byte[] block;
+
+ // Conditionally emit an extra field with Zip64 information. If the
+ // Zip64 option is Always, we emit the field, before knowing that it's
+ // necessary. Later, if it turns out this entry does not need zip64,
+ // we'll set the header ID to rubbish and the data will be ignored.
+ // This results in additional overhead metadata in the zip file, but
+ // it will be small in comparison to the entry data.
+ //
+ // On the other hand if the Zip64 option is AsNecessary and it's NOT
+ // for the central directory, then we do the same thing. Or, if the
+ // Zip64 option is AsNecessary and it IS for the central directory,
+ // and the entry requires zip64, then emit the header.
+ if (_container.Zip64 == Zip64Option.Always ||
+ (_container.Zip64 == Zip64Option.AsNecessary &&
+ (!forCentralDirectory || _entryRequiresZip64.Value)))
+ {
+ // add extra field for zip64 here
+ // workitem 7924
+ int sz = 4 + (forCentralDirectory ? 28 : 16);
+ block = new byte[sz];
+ int i = 0;
+
+ if (_presumeZip64 || forCentralDirectory)
+ {
+ // HeaderId = always use zip64 extensions.
+ block[i++] = 0x01;
+ block[i++] = 0x00;
+ }
+ else
+ {
+ // HeaderId = dummy data now, maybe set to 0x0001 (ZIP64) later.
+ block[i++] = 0x99;
+ block[i++] = 0x99;
+ }
+
+ // DataSize
+ block[i++] = (byte)(sz - 4); // decimal 28 or 16 (workitem 7924)
+ block[i++] = 0x00;
+
+ // The actual metadata - we may or may not have real values yet...
+
+ // uncompressed size
+ Array.Copy(BitConverter.GetBytes(_UncompressedSize), 0, block, i, 8);
+ i += 8;
+ // compressed size
+ Array.Copy(BitConverter.GetBytes(_CompressedSize), 0, block, i, 8);
+ i += 8;
+
+ // workitem 7924 - only include this if the "extra" field is for
+ // use in the central directory. It is unnecessary and not useful
+ // for local header; makes WinZip choke.
+ if (forCentralDirectory)
+ {
+ // relative offset
+ Array.Copy(BitConverter.GetBytes(_RelativeOffsetOfLocalHeader), 0, block, i, 8);
+ i += 8;
+
+ // starting disk number
+ Array.Copy(BitConverter.GetBytes(0), 0, block, i, 4);
+ }
+ listOfBlocks.Add(block);
+ }
+
+
+#if AESCRYPTO
+ if (Encryption == EncryptionAlgorithm.WinZipAes128 ||
+ Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ block = new byte[4 + 7];
+ int i = 0;
+ // extra field for WinZip AES
+ // header id
+ block[i++] = 0x01;
+ block[i++] = 0x99;
+
+ // data size
+ block[i++] = 0x07;
+ block[i++] = 0x00;
+
+ // vendor number
+ block[i++] = 0x01; // AE-1 - means "Verify CRC"
+ block[i++] = 0x00;
+
+ // vendor id "AE"
+ block[i++] = 0x41;
+ block[i++] = 0x45;
+
+ // key strength
+ int keystrength = GetKeyStrengthInBits(Encryption);
+ if (keystrength == 128)
+ block[i] = 1;
+ else if (keystrength == 256)
+ block[i] = 3;
+ else
+ block[i] = 0xFF;
+ i++;
+
+ // actual compression method
+ block[i++] = (byte)(_CompressionMethod & 0x00FF);
+ block[i++] = (byte)(_CompressionMethod & 0xFF00);
+
+ listOfBlocks.Add(block);
+ }
+#endif
+
+ if (_ntfsTimesAreSet && _emitNtfsTimes)
+ {
+ block = new byte[32 + 4];
+ // HeaderId 2 bytes 0x000a == NTFS times
+ // Datasize 2 bytes 32
+ // reserved 4 bytes ?? don't care
+ // timetag 2 bytes 0x0001 == NTFS time
+ // size 2 bytes 24 == 8 bytes each for ctime, mtime, atime
+ // mtime 8 bytes win32 ticks since win32epoch
+ // atime 8 bytes win32 ticks since win32epoch
+ // ctime 8 bytes win32 ticks since win32epoch
+ int i = 0;
+ // extra field for NTFS times
+ // header id
+ block[i++] = 0x0a;
+ block[i++] = 0x00;
+
+ // data size
+ block[i++] = 32;
+ block[i++] = 0;
+
+ i += 4; // reserved
+
+ // time tag
+ block[i++] = 0x01;
+ block[i++] = 0x00;
+
+ // data size (again)
+ block[i++] = 24;
+ block[i++] = 0;
+
+ Int64 z = _Mtime.ToFileTime();
+ Array.Copy(BitConverter.GetBytes(z), 0, block, i, 8);
+ i += 8;
+ z = _Atime.ToFileTime();
+ Array.Copy(BitConverter.GetBytes(z), 0, block, i, 8);
+ i += 8;
+ z = _Ctime.ToFileTime();
+ Array.Copy(BitConverter.GetBytes(z), 0, block, i, 8);
+ i += 8;
+
+ listOfBlocks.Add(block);
+ }
+
+ if (_ntfsTimesAreSet && _emitUnixTimes)
+ {
+ int len = 5 + 4;
+ if (!forCentralDirectory) len += 8;
+
+ block = new byte[len];
+ // local form:
+ // --------------
+ // HeaderId 2 bytes 0x5455 == unix timestamp
+ // Datasize 2 bytes 13
+ // flags 1 byte 7 (low three bits all set)
+ // mtime 4 bytes seconds since unix epoch
+ // atime 4 bytes seconds since unix epoch
+ // ctime 4 bytes seconds since unix epoch
+ //
+ // central directory form:
+ //---------------------------------
+ // HeaderId 2 bytes 0x5455 == unix timestamp
+ // Datasize 2 bytes 5
+ // flags 1 byte 7 (low three bits all set)
+ // mtime 4 bytes seconds since unix epoch
+ //
+ int i = 0;
+ // extra field for "unix" times
+ // header id
+ block[i++] = 0x55;
+ block[i++] = 0x54;
+
+ // data size
+ block[i++] = unchecked((byte)(len - 4));
+ block[i++] = 0;
+
+ // flags
+ block[i++] = 0x07;
+
+ Int32 z = unchecked((int)((_Mtime - _unixEpoch).TotalSeconds));
+ Array.Copy(BitConverter.GetBytes(z), 0, block, i, 4);
+ i += 4;
+ if (!forCentralDirectory)
+ {
+ z = unchecked((int)((_Atime - _unixEpoch).TotalSeconds));
+ Array.Copy(BitConverter.GetBytes(z), 0, block, i, 4);
+ i += 4;
+ z = unchecked((int)((_Ctime - _unixEpoch).TotalSeconds));
+ Array.Copy(BitConverter.GetBytes(z), 0, block, i, 4);
+ i += 4;
+ }
+ listOfBlocks.Add(block);
+ }
+
+
+ // inject other blocks here...
+
+
+ // concatenate any blocks we've got:
+ byte[] aggregateBlock = null;
+ if (listOfBlocks.Count > 0)
+ {
+ int totalLength = 0;
+ int i, current = 0;
+ for (i = 0; i < listOfBlocks.Count; i++)
+ totalLength += listOfBlocks[i].Length;
+ aggregateBlock = new byte[totalLength];
+ for (i = 0; i < listOfBlocks.Count; i++)
+ {
+ System.Array.Copy(listOfBlocks[i], 0, aggregateBlock, current, listOfBlocks[i].Length);
+ current += listOfBlocks[i].Length;
+ }
+ }
+
+ return aggregateBlock;
+ }
+
+
+
+ // private System.Text.Encoding GenerateCommentBytes()
+ // {
+ // var getEncoding = new Func<System.Text.Encoding>({
+ // switch (AlternateEncodingUsage)
+ // {
+ // case ZipOption.Always:
+ // return AlternateEncoding;
+ // case ZipOption.Never:
+ // return ibm437;
+ // }
+ // var cb = ibm437.GetBytes(_Comment);
+ // // need to use this form of GetString() for .NET CF
+ // string s1 = ibm437.GetString(cb, 0, cb.Length);
+ // if (s1 == _Comment)
+ // return ibm437;
+ // return AlternateEncoding;
+ // });
+ //
+ // var encoding = getEncoding();
+ // _CommentBytes = encoding.GetBytes(_Comment);
+ // return encoding;
+ // }
+
+
+ private string NormalizeFileName()
+ {
+ // here, we need to flip the backslashes to forward-slashes,
+ // also, we need to trim the \\server\share syntax from any UNC path.
+ // and finally, we need to remove any leading .\
+
+ string SlashFixed = FileName.Replace("\\", "/");
+ string s1 = null;
+ if ((_TrimVolumeFromFullyQualifiedPaths) && (FileName.Length >= 3)
+ && (FileName[1] == ':') && (SlashFixed[2] == '/'))
+ {
+ // trim off volume letter, colon, and slash
+ s1 = SlashFixed.Substring(3);
+ }
+ else if ((FileName.Length >= 4)
+ && ((SlashFixed[0] == '/') && (SlashFixed[1] == '/')))
+ {
+ int n = SlashFixed.IndexOf('/', 2);
+ if (n == -1)
+ throw new ArgumentException("The path for that entry appears to be badly formatted");
+ s1 = SlashFixed.Substring(n + 1);
+ }
+ else if ((FileName.Length >= 3)
+ && ((SlashFixed[0] == '.') && (SlashFixed[1] == '/')))
+ {
+ // trim off dot and slash
+ s1 = SlashFixed.Substring(2);
+ }
+ else
+ {
+ s1 = SlashFixed;
+ }
+ return s1;
+ }
+
+
+ /// <summary>
+ /// generate and return a byte array that encodes the filename
+ /// for the entry.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// side effects: generate and store into _CommentBytes the
+ /// byte array for any comment attached to the entry. Also
+ /// sets _actualEncoding to indicate the actual encoding
+ /// used. The same encoding is used for both filename and
+ /// comment.
+ /// </para>
+ /// </remarks>
+ private byte[] GetEncodedFileNameBytes()
+ {
+ // workitem 6513
+ var s1 = NormalizeFileName();
+
+ switch(AlternateEncodingUsage)
+ {
+ case ZipOption.Always:
+ if (!(_Comment == null || _Comment.Length == 0))
+ _CommentBytes = AlternateEncoding.GetBytes(_Comment);
+ _actualEncoding = AlternateEncoding;
+ return AlternateEncoding.GetBytes(s1);
+
+ case ZipOption.Never:
+ if (!(_Comment == null || _Comment.Length == 0))
+ _CommentBytes = ibm437.GetBytes(_Comment);
+ _actualEncoding = ibm437;
+ return ibm437.GetBytes(s1);
+ }
+
+ // arriving here means AlternateEncodingUsage is "AsNecessary"
+
+ // case ZipOption.AsNecessary:
+ // workitem 6513: when writing, use the alternative encoding
+ // only when _actualEncoding is not yet set (it can be set
+ // during Read), and when ibm437 will not do.
+
+ byte[] result = ibm437.GetBytes(s1);
+ // need to use this form of GetString() for .NET CF
+ string s2 = ibm437.GetString(result, 0, result.Length);
+ _CommentBytes = null;
+ if (s2 != s1)
+ {
+ // Encoding the filename with ibm437 does not allow round-trips.
+ // Therefore, use the alternate encoding. Assume it will work,
+ // no checking of round trips here.
+ result = AlternateEncoding.GetBytes(s1);
+ if (_Comment != null && _Comment.Length != 0)
+ _CommentBytes = AlternateEncoding.GetBytes(_Comment);
+ _actualEncoding = AlternateEncoding;
+ return result;
+ }
+
+ _actualEncoding = ibm437;
+
+ // Using ibm437, FileName can be encoded without information
+ // loss; now try the Comment.
+
+ // if there is no comment, use ibm437.
+ if (_Comment == null || _Comment.Length == 0)
+ return result;
+
+ // there is a comment. Get the encoded form.
+ byte[] cbytes = ibm437.GetBytes(_Comment);
+ string c2 = ibm437.GetString(cbytes,0,cbytes.Length);
+
+ // Check for round-trip.
+ if (c2 != Comment)
+ {
+ // Comment cannot correctly be encoded with ibm437. Use
+ // the alternate encoding.
+
+ result = AlternateEncoding.GetBytes(s1);
+ _CommentBytes = AlternateEncoding.GetBytes(_Comment);
+ _actualEncoding = AlternateEncoding;
+ return result;
+ }
+
+ // use IBM437
+ _CommentBytes = cbytes;
+ return result;
+ }
+
+
+
+ private bool WantReadAgain()
+ {
+ if (_UncompressedSize < 0x10) return false;
+ if (_CompressionMethod == 0x00) return false;
+ if (CompressionLevel == Ionic.Zlib.CompressionLevel.None) return false;
+ if (_CompressedSize < _UncompressedSize) return false;
+
+ if (this._Source == ZipEntrySource.Stream && !this._sourceStream.CanSeek) return false;
+
+#if AESCRYPTO
+ if (_aesCrypto_forWrite != null && (CompressedSize - _aesCrypto_forWrite.SizeOfEncryptionMetadata) <= UncompressedSize + 0x10) return false;
+#endif
+
+ if (_zipCrypto_forWrite != null && (CompressedSize - 12) <= UncompressedSize) return false;
+
+ return true;
+ }
+
+
+
+ private void MaybeUnsetCompressionMethodForWriting(int cycle)
+ {
+ // if we've already tried with compression... turn it off this time
+ if (cycle > 1)
+ {
+ _CompressionMethod = 0x0;
+ return;
+ }
+ // compression for directories = 0x00 (No Compression)
+ if (IsDirectory)
+ {
+ _CompressionMethod = 0x0;
+ return;
+ }
+
+ if (this._Source == ZipEntrySource.ZipFile)
+ {
+ return; // do nothing
+ }
+
+ // If __FileDataPosition is zero, then that means we will get the data
+ // from a file or stream.
+
+ // It is never possible to compress a zero-length file, so we check for
+ // this condition.
+
+ if (this._Source == ZipEntrySource.Stream)
+ {
+ // workitem 7742
+ if (_sourceStream != null && _sourceStream.CanSeek)
+ {
+ // Length prop will throw if CanSeek is false
+ long fileLength = _sourceStream.Length;
+ if (fileLength == 0)
+ {
+ _CompressionMethod = 0x00;
+ return;
+ }
+ }
+ }
+ else if ((this._Source == ZipEntrySource.FileSystem) && (SharedUtilities.GetFileLength(LocalFileName) == 0L))
+ {
+ _CompressionMethod = 0x00;
+ return;
+ }
+
+ // Ok, we're getting the data to be compressed from a
+ // non-zero-length file or stream, or a file or stream of
+ // unknown length, and we presume that it is non-zero. In
+ // that case we check the callback to see if the app wants
+ // to tell us whether to compress or not.
+ if (SetCompression != null)
+ CompressionLevel = SetCompression(LocalFileName, _FileNameInArchive);
+
+ // finally, set CompressionMethod to None if CompressionLevel is None
+ if (CompressionLevel == (short)Ionic.Zlib.CompressionLevel.None &&
+ CompressionMethod == Ionic.Zip.CompressionMethod.Deflate)
+ _CompressionMethod = 0x00;
+
+ return;
+ }
+
+
+
+ // write the header info for an entry
+ internal void WriteHeader(Stream s, int cycle)
+ {
+ // Must remember the offset, within the output stream, of this particular
+ // entry header.
+ //
+ // This is for 2 reasons:
+ //
+ // 1. so we can determine the RelativeOffsetOfLocalHeader (ROLH) for
+ // use in the central directory.
+ // 2. so we can seek backward in case there is an error opening or reading
+ // the file, and the application decides to skip the file. In this case,
+ // we need to seek backward in the output stream to allow the next entry
+ // to be added to the zipfile output stream.
+ //
+ // Normally you would just store the offset before writing to the output
+ // stream and be done with it. But the possibility to use split archives
+ // makes this approach ineffective. In split archives, each file or segment
+ // is bound to a max size limit, and each local file header must not span a
+ // segment boundary; it must be written contiguously. If it will fit in the
+ // current segment, then the ROLH is just the current Position in the output
+ // stream. If it won't fit, then we need a new file (segment) and the ROLH
+ // is zero.
+ //
+ // But we only can know if it is possible to write a header contiguously
+ // after we know the size of the local header, a size that varies with
+ // things like filename length, comments, and extra fields. We have to
+ // compute the header fully before knowing whether it will fit.
+ //
+ // That takes care of item #1 above. Now, regarding #2. If an error occurs
+ // while computing the local header, we want to just seek backward. The
+ // exception handling logic (in the caller of WriteHeader) uses ROLH to
+ // scroll back.
+ //
+ // All this means we have to preserve the starting offset before computing
+ // the header, and also we have to compute the offset later, to handle the
+ // case of split archives.
+
+ var counter = s as CountingStream;
+
+ // workitem 8098: ok (output)
+ // This may change later, for split archives
+
+ // Don't set _RelativeOffsetOfLocalHeader. Instead, set a temp variable.
+ // This allows for re-streaming, where a zip entry might be read from a
+ // zip archive (and maybe decrypted, and maybe decompressed) and then
+ // written to another zip archive, with different settings for
+ // compression method, compression level, or encryption algorithm.
+ _future_ROLH = (counter != null)
+ ? counter.ComputedPosition
+ : s.Position;
+
+ int j = 0, i = 0;
+
+ byte[] block = new byte[30];
+
+ // signature
+ block[i++] = (byte)(ZipConstants.ZipEntrySignature & 0x000000FF);
+ block[i++] = (byte)((ZipConstants.ZipEntrySignature & 0x0000FF00) >> 8);
+ block[i++] = (byte)((ZipConstants.ZipEntrySignature & 0x00FF0000) >> 16);
+ block[i++] = (byte)((ZipConstants.ZipEntrySignature & 0xFF000000) >> 24);
+
+ // Design notes for ZIP64:
+ //
+ // The specification says that the header must include the Compressed
+ // and Uncompressed sizes, as well as the CRC32 value. When creating
+ // a zip via streamed processing, these quantities are not known until
+ // after the compression is done. Thus, a typical way to do it is to
+ // insert zeroes for these quantities, then do the compression, then
+ // seek back to insert the appropriate values, then seek forward to
+ // the end of the file data.
+ //
+ // There is also the option of using bit 3 in the GP bitfield - to
+ // specify that there is a data descriptor after the file data
+ // containing these three quantities.
+ //
+ // This works when the size of the quantities is known, either 32-bits
+ // or 64 bits as with the ZIP64 extensions.
+ //
+ // With Zip64, the 4-byte fields are set to 0xffffffff, and there is a
+ // corresponding data block in the "extra field" that contains the
+ // actual Compressed, uncompressed sizes. (As well as an additional
+ // field, the "Relative Offset of Local Header")
+ //
+ // The problem is when the app desires to use ZIP64 extensions
+ // optionally, only when necessary. Suppose the library assumes no
+ // zip64 extensions when writing the header, then after compression
+ // finds that the size of the data requires zip64. At this point, the
+ // header, already written to the file, won't have the necessary data
+ // block in the "extra field". The size of the entry header is fixed,
+ // so it is not possible to just "add on" the zip64 data block after
+ // compressing the file. On the other hand, always using zip64 will
+ // break interoperability with many other systems and apps.
+ //
+ // The approach we take is to insert a 32-byte dummy data block in the
+ // extra field, whenever zip64 is to be used "as necessary". This data
+ // block will get the actual zip64 HeaderId and zip64 metadata if
+ // necessary. If not necessary, the data block will get a meaningless
+ // HeaderId (0x1111), and will be filled with zeroes.
+ //
+ // When zip64 is actually in use, we also need to set the
+ // VersionNeededToExtract field to 45.
+ //
+ // There is one additional wrinkle: using zip64 as necessary conflicts
+ // with output to non-seekable devices. The header is emitted and
+ // must indicate whether zip64 is in use, before we know if zip64 is
+ // necessary. Because there is no seeking, the header can never be
+ // changed. Therefore, on non-seekable devices,
+ // Zip64Option.AsNecessary is the same as Zip64Option.Always.
+ //
+
+
+ // version needed- see AppNote.txt.
+ //
+ // need v5.1 for PKZIP strong encryption, or v2.0 for no encryption or
+ // for PK encryption, 4.5 for zip64. We may reset this later, as
+ // necessary or zip64.
+
+ _presumeZip64 = (_container.Zip64 == Zip64Option.Always ||
+ (_container.Zip64 == Zip64Option.AsNecessary && !s.CanSeek));
+ Int16 VersionNeededToExtract = (Int16)(_presumeZip64 ? 45 : 20);
+#if BZIP
+ if (this.CompressionMethod == Ionic.Zip.CompressionMethod.BZip2)
+ VersionNeededToExtract = 46;
+#endif
+
+ // (i==4)
+ block[i++] = (byte)(VersionNeededToExtract & 0x00FF);
+ block[i++] = (byte)((VersionNeededToExtract & 0xFF00) >> 8);
+
+ // Get byte array. Side effect: sets ActualEncoding.
+ // Must determine encoding before setting the bitfield.
+ // workitem 6513
+ byte[] fileNameBytes = GetEncodedFileNameBytes();
+ Int16 filenameLength = (Int16)fileNameBytes.Length;
+
+ // general purpose bitfield
+ // In the current implementation, this library uses only these bits
+ // in the GP bitfield:
+ // bit 0 = if set, indicates the entry is encrypted
+ // bit 3 = if set, indicates the CRC, C and UC sizes follow the file data.
+ // bit 6 = strong encryption - for pkware's meaning of strong encryption
+ // bit 11 = UTF-8 encoding is used in the comment and filename
+
+
+ // Here we set or unset the encryption bit.
+ // _BitField may already be set, as with a ZipEntry added into ZipOutputStream, which
+ // has bit 3 always set. We only want to set one bit
+ if (_Encryption == EncryptionAlgorithm.None)
+ _BitField &= ~1; // encryption bit OFF
+ else
+ _BitField |= 1; // encryption bit ON
+
+
+ // workitem 7941: WinZip does not the "strong encryption" bit when using AES.
+ // This "Strong Encryption" is a PKWare Strong encryption thing.
+ // _BitField |= 0x0020;
+
+ // set the UTF8 bit if necessary
+#if SILVERLIGHT
+ if (_actualEncoding.WebName == "utf-8")
+#else
+ if (_actualEncoding.CodePage == System.Text.Encoding.UTF8.CodePage)
+#endif
+ _BitField |= 0x0800;
+
+ // The PKZIP spec says that if bit 3 is set (0x0008) in the General
+ // Purpose BitField, then the CRC, Compressed size, and uncompressed
+ // size are written directly after the file data.
+ //
+ // These 3 quantities are normally present in the regular zip entry
+ // header. But, they are not knowable until after the compression is
+ // done. So, in the normal case, we
+ //
+ // - write the header, using zeros for these quantities
+ // - compress the data, and incidentally compute these quantities.
+ // - seek back and write the correct values them into the header.
+ //
+ // This is nice because, while it is more complicated to write the zip
+ // file, it is simpler and less error prone to read the zip file, and
+ // as a result more applications can read zip files produced this way,
+ // with those 3 quantities in the header.
+ //
+ // But if seeking in the output stream is not possible, then we need
+ // to set the appropriate bitfield and emit these quantities after the
+ // compressed file data in the output.
+ //
+ // workitem 7216 - having trouble formatting a zip64 file that is
+ // readable by WinZip. not sure why! What I found is that setting
+ // bit 3 and following all the implications, the zip64 file is
+ // readable by WinZip 12. and Perl's IO::Compress::Zip . Perl takes
+ // an interesting approach - it always sets bit 3 if ZIP64 in use.
+ // DotNetZip now does the same; this gives better compatibility with
+ // WinZip 12.
+
+ if (IsDirectory || cycle == 99)
+ {
+ // (cycle == 99) indicates a zero-length entry written by ZipOutputStream
+
+ _BitField &= ~0x0008; // unset bit 3 - no "data descriptor" - ever
+ _BitField &= ~0x0001; // unset bit 1 - no encryption - ever
+ Encryption = EncryptionAlgorithm.None;
+ Password = null;
+ }
+ else if (!s.CanSeek)
+ _BitField |= 0x0008;
+
+#if DONT_GO_THERE
+ else if (this.Encryption == EncryptionAlgorithm.PkzipWeak &&
+ this._Source != ZipEntrySource.ZipFile)
+ {
+ // Set bit 3 to avoid the double-read perf issue.
+ //
+ // When PKZIP encryption is used, byte 11 of the encryption header is
+ // used as a consistency check. It is normally set to the MSByte of the
+ // CRC. But this means the cRC must be known ebfore compression and
+ // encryption, which means the entire stream has to be read twice. To
+ // avoid that, the high-byte of the time blob (when in DOS format) can
+ // be used for the consistency check (byte 11 in the encryption header).
+ // But this means the entry must have bit 3 set.
+ //
+ // Previously I used a more complex arrangement - using the methods like
+ // FigureCrc32(), PrepOutputStream() and others, in order to manage the
+ // seek-back in the source stream. Why? Because bit 3 is not always
+ // friendly with third-party zip tools, like those on the Mac.
+ //
+ // This is why this code is still ifdef'd out.
+ //
+ // Might consider making this yet another programmable option -
+ // AlwaysUseBit3ForPkzip. But that's for another day.
+ //
+ _BitField |= 0x0008;
+ }
+#endif
+
+ // (i==6)
+ block[i++] = (byte)(_BitField & 0x00FF);
+ block[i++] = (byte)((_BitField & 0xFF00) >> 8);
+
+ // Here, we want to set values for Compressed Size, Uncompressed Size,
+ // and CRC. If we have __FileDataPosition as not -1 (zero is a valid
+ // FDP), then that means we are reading this zip entry from a zip
+ // file, and we have good values for those quantities.
+ //
+ // If _FileDataPosition is -1, then we are constructing this Entry
+ // from nothing. We zero those quantities now, and we will compute
+ // actual values for the three quantities later, when we do the
+ // compression, and then seek back to write them into the appropriate
+ // place in the header.
+ if (this.__FileDataPosition == -1)
+ {
+ //_UncompressedSize = 0; // do not unset - may need this value for restream
+ // _Crc32 = 0; // ditto
+ _CompressedSize = 0;
+ _crcCalculated = false;
+ }
+
+ // set compression method here
+ MaybeUnsetCompressionMethodForWriting(cycle);
+
+ // (i==8) compression method
+ block[i++] = (byte)(_CompressionMethod & 0x00FF);
+ block[i++] = (byte)((_CompressionMethod & 0xFF00) >> 8);
+
+ if (cycle == 99)
+ {
+ // (cycle == 99) indicates a zero-length entry written by ZipOutputStream
+ SetZip64Flags();
+ }
+
+#if AESCRYPTO
+ else if (Encryption == EncryptionAlgorithm.WinZipAes128 || Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ i -= 2;
+ block[i++] = 0x63;
+ block[i++] = 0;
+ }
+#endif
+
+ // LastMod
+ _TimeBlob = Ionic.Zip.SharedUtilities.DateTimeToPacked(LastModified);
+
+ // (i==10) time blob
+ block[i++] = (byte)(_TimeBlob & 0x000000FF);
+ block[i++] = (byte)((_TimeBlob & 0x0000FF00) >> 8);
+ block[i++] = (byte)((_TimeBlob & 0x00FF0000) >> 16);
+ block[i++] = (byte)((_TimeBlob & 0xFF000000) >> 24);
+
+ // (i==14) CRC - if source==filesystem, this is zero now, actual value
+ // will be calculated later. if source==archive, this is a bonafide
+ // value.
+ block[i++] = (byte)(_Crc32 & 0x000000FF);
+ block[i++] = (byte)((_Crc32 & 0x0000FF00) >> 8);
+ block[i++] = (byte)((_Crc32 & 0x00FF0000) >> 16);
+ block[i++] = (byte)((_Crc32 & 0xFF000000) >> 24);
+
+ if (_presumeZip64)
+ {
+ // (i==18) CompressedSize (Int32) and UncompressedSize - all 0xFF for now
+ for (j = 0; j < 8; j++)
+ block[i++] = 0xFF;
+ }
+ else
+ {
+ // (i==18) CompressedSize (Int32) - this value may or may not be
+ // bonafide. if source == filesystem, then it is zero, and we'll
+ // learn it after we compress. if source == archive, then it is
+ // bonafide data.
+ block[i++] = (byte)(_CompressedSize & 0x000000FF);
+ block[i++] = (byte)((_CompressedSize & 0x0000FF00) >> 8);
+ block[i++] = (byte)((_CompressedSize & 0x00FF0000) >> 16);
+ block[i++] = (byte)((_CompressedSize & 0xFF000000) >> 24);
+
+ // (i==22) UncompressedSize (Int32) - this value may or may not be
+ // bonafide.
+ block[i++] = (byte)(_UncompressedSize & 0x000000FF);
+ block[i++] = (byte)((_UncompressedSize & 0x0000FF00) >> 8);
+ block[i++] = (byte)((_UncompressedSize & 0x00FF0000) >> 16);
+ block[i++] = (byte)((_UncompressedSize & 0xFF000000) >> 24);
+ }
+
+ // (i==26) filename length (Int16)
+ block[i++] = (byte)(filenameLength & 0x00FF);
+ block[i++] = (byte)((filenameLength & 0xFF00) >> 8);
+
+ _Extra = ConstructExtraField(false);
+
+ // (i==28) extra field length (short)
+ Int16 extraFieldLength = (Int16)((_Extra == null) ? 0 : _Extra.Length);
+ block[i++] = (byte)(extraFieldLength & 0x00FF);
+ block[i++] = (byte)((extraFieldLength & 0xFF00) >> 8);
+
+ // workitem 13542
+ byte[] bytes = new byte[i + filenameLength + extraFieldLength];
+
+ // get the fixed portion
+ Buffer.BlockCopy(block, 0, bytes, 0, i);
+ //for (j = 0; j < i; j++) bytes[j] = block[j];
+
+ // The filename written to the archive.
+ Buffer.BlockCopy(fileNameBytes, 0, bytes, i, fileNameBytes.Length);
+ // for (j = 0; j < fileNameBytes.Length; j++)
+ // bytes[i + j] = fileNameBytes[j];
+
+ i += fileNameBytes.Length;
+
+ // "Extra field"
+ if (_Extra != null)
+ {
+ Buffer.BlockCopy(_Extra, 0, bytes, i, _Extra.Length);
+ // for (j = 0; j < _Extra.Length; j++)
+ // bytes[i + j] = _Extra[j];
+ i += _Extra.Length;
+ }
+
+ _LengthOfHeader = i;
+
+ // handle split archives
+ var zss = s as ZipSegmentedStream;
+ if (zss != null)
+ {
+ zss.ContiguousWrite = true;
+ UInt32 requiredSegment = zss.ComputeSegment(i);
+ if (requiredSegment != zss.CurrentSegment)
+ _future_ROLH = 0; // rollover!
+ else
+ _future_ROLH = zss.Position;
+
+ _diskNumber = requiredSegment;
+ }
+
+ // validate the ZIP64 usage
+ if (_container.Zip64 == Zip64Option.Never && (uint)_RelativeOffsetOfLocalHeader >= 0xFFFFFFFF)
+ throw new ZipException("Offset within the zip archive exceeds 0xFFFFFFFF. Consider setting the UseZip64WhenSaving property on the ZipFile instance.");
+
+
+ // finally, write the header to the stream
+ s.Write(bytes, 0, i);
+
+ // now that the header is written, we can turn off the contiguous write restriction.
+ if (zss != null)
+ zss.ContiguousWrite = false;
+
+ // Preserve this header data, we'll use it again later.
+ // ..when seeking backward, to write again, after we have the Crc, compressed
+ // and uncompressed sizes.
+ // ..and when writing the central directory structure.
+ _EntryHeader = bytes;
+ }
+
+
+
+
+ private Int32 FigureCrc32()
+ {
+ if (_crcCalculated == false)
+ {
+ Stream input = null;
+ // get the original stream:
+ if (this._Source == ZipEntrySource.WriteDelegate)
+ {
+ var output = new Ionic.Crc.CrcCalculatorStream(Stream.Null);
+ // allow the application to write the data
+ this._WriteDelegate(this.FileName, output);
+ _Crc32 = output.Crc;
+ }
+ else if (this._Source == ZipEntrySource.ZipFile)
+ {
+ // nothing to do - the CRC is already set
+ }
+ else
+ {
+ if (this._Source == ZipEntrySource.Stream)
+ {
+ PrepSourceStream();
+ input = this._sourceStream;
+ }
+ else if (this._Source == ZipEntrySource.JitStream)
+ {
+ // allow the application to open the stream
+ if (this._sourceStream == null)
+ _sourceStream = this._OpenDelegate(this.FileName);
+ PrepSourceStream();
+ input = this._sourceStream;
+ }
+ else if (this._Source == ZipEntrySource.ZipOutputStream)
+ {
+ }
+ else
+ {
+ //input = File.OpenRead(LocalFileName);
+ input = File.Open(LocalFileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
+ }
+
+ var crc32 = new Ionic.Crc.CRC32();
+ _Crc32 = crc32.GetCrc32(input);
+
+ if (_sourceStream == null)
+ {
+#if NETCF
+ input.Close();
+#else
+ input.Dispose();
+#endif
+ }
+ }
+ _crcCalculated = true;
+ }
+ return _Crc32;
+ }
+
+
+ /// <summary>
+ /// Stores the position of the entry source stream, or, if the position is
+ /// already stored, seeks to that position.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method is called in prep for reading the source stream. If PKZIP
+ /// encryption is used, then we need to calc the CRC32 before doing the
+ /// encryption, because the CRC is used in the 12th byte of the PKZIP
+ /// encryption header. So, we need to be able to seek backward in the source
+ /// when saving the ZipEntry. This method is called from the place that
+ /// calculates the CRC, and also from the method that does the encryption of
+ /// the file data.
+ /// </para>
+ ///
+ /// <para>
+ /// The first time through, this method sets the _sourceStreamOriginalPosition
+ /// field. Subsequent calls to this method seek to that position.
+ /// </para>
+ /// </remarks>
+ private void PrepSourceStream()
+ {
+ if (_sourceStream == null)
+ throw new ZipException(String.Format("The input stream is null for entry '{0}'.", FileName));
+
+ if (this._sourceStreamOriginalPosition != null)
+ {
+ // this will happen the 2nd cycle through, if the stream is seekable
+ this._sourceStream.Position = this._sourceStreamOriginalPosition.Value;
+ }
+ else if (this._sourceStream.CanSeek)
+ {
+ // this will happen the first cycle through, if seekable
+ this._sourceStreamOriginalPosition = new Nullable<Int64>(this._sourceStream.Position);
+ }
+ else if (this.Encryption == EncryptionAlgorithm.PkzipWeak)
+ {
+ // In general, using PKZIP encryption on a a zip entry whose input
+ // comes from a non-seekable stream, is tricky. Here's why:
+ //
+ // Byte 11 of the PKZIP encryption header is used for password
+ // validation and consistency checknig.
+ //
+ // Normally, the highest byte of the CRC is used as the 11th (last) byte
+ // in the PKZIP encryption header. This means the CRC must be known
+ // before encryption is performed. Normally that means we read the full
+ // data stream, compute the CRC, then seek back and read it again for
+ // the compression+encryption phase. Obviously this is bad for
+ // performance with a large input file.
+ //
+ // There's a twist in the ZIP spec (actually documented only in infozip
+ // code, not in the spec itself) that allows the high-order byte of the
+ // last modified time for the entry, when the lastmod time is in packed
+ // (DOS) format, to be used for Byte 11 in the encryption header. In
+ // this case, the bit 3 "data descriptor" must be used.
+ //
+ // An intelligent implementation would therefore force the use of the
+ // bit 3 data descriptor when PKZIP encryption is in use, regardless.
+ // This avoids the double-read of the stream to be encrypted. So far,
+ // DotNetZip doesn't do that; it just punts when the input stream is
+ // non-seekable, and the output does not use Bit 3.
+ //
+ // The other option is to use the CRC when it is already available, eg,
+ // when the source for the data is a ZipEntry (when the zip file is
+ // being updated). In this case we already know the CRC and can just use
+ // what we know.
+
+ if (this._Source != ZipEntrySource.ZipFile && ((this._BitField & 0x0008) != 0x0008))
+ throw new ZipException("It is not possible to use PKZIP encryption on a non-seekable input stream");
+ }
+ }
+
+
+ /// <summary>
+ /// Copy metadata that may have been changed by the app. We do this when
+ /// resetting the zipFile instance. If the app calls Save() on a ZipFile, then
+ /// tries to party on that file some more, we may need to Reset() it , which
+ /// means re-reading the entries and then copying the metadata. I think.
+ /// </summary>
+ internal void CopyMetaData(ZipEntry source)
+ {
+ this.__FileDataPosition = source.__FileDataPosition;
+ this.CompressionMethod = source.CompressionMethod;
+ this._CompressionMethod_FromZipFile = source._CompressionMethod_FromZipFile;
+ this._CompressedFileDataSize = source._CompressedFileDataSize;
+ this._UncompressedSize = source._UncompressedSize;
+ this._BitField = source._BitField;
+ this._Source = source._Source;
+ this._LastModified = source._LastModified;
+ this._Mtime = source._Mtime;
+ this._Atime = source._Atime;
+ this._Ctime = source._Ctime;
+ this._ntfsTimesAreSet = source._ntfsTimesAreSet;
+ this._emitUnixTimes = source._emitUnixTimes;
+ this._emitNtfsTimes = source._emitNtfsTimes;
+ }
+
+
+ private void OnWriteBlock(Int64 bytesXferred, Int64 totalBytesToXfer)
+ {
+ if (_container.ZipFile != null)
+ _ioOperationCanceled = _container.ZipFile.OnSaveBlock(this, bytesXferred, totalBytesToXfer);
+ }
+
+
+
+ private void _WriteEntryData(Stream s)
+ {
+ // Read in the data from the input stream (often a file in the filesystem),
+ // and write it to the output stream, calculating a CRC on it as we go.
+ // We will also compress and encrypt as necessary.
+
+ Stream input = null;
+ long fdp = -1L;
+ try
+ {
+ // Want to record the position in the zip file of the zip entry
+ // data (as opposed to the metadata). s.Position may fail on some
+ // write-only streams, eg stdout or System.Web.HttpResponseStream.
+ // We swallow that exception, because we don't care, in that case.
+ // But, don't set __FileDataPosition directly. It may be needed
+ // to READ the zip entry from the zip file, if this is a
+ // "re-stream" situation. In other words if the zip entry has
+ // changed compression level, or compression method, or (maybe?)
+ // encryption algorithm. In that case if the original entry is
+ // encrypted, we need __FileDataPosition to be the value for the
+ // input zip file. This s.Position is for the output zipfile. So
+ // we copy fdp to __FileDataPosition after this entry has been
+ // (maybe) restreamed.
+ fdp = s.Position;
+ }
+ catch (Exception) { }
+
+ try
+ {
+ // Use fileLength for progress updates, and to decide whether we can
+ // skip encryption and compression altogether (in case of length==zero)
+ long fileLength = SetInputAndFigureFileLength(ref input);
+
+ // Wrap a counting stream around the raw output stream:
+ // This is the last thing that happens before the bits go to the
+ // application-provided stream.
+ //
+ // Sometimes s is a CountingStream. Doesn't matter. Wrap it with a
+ // counter anyway. We need to count at both levels.
+
+ CountingStream entryCounter = new CountingStream(s);
+
+ Stream encryptor;
+ Stream compressor;
+
+ if (fileLength != 0L)
+ {
+ // Maybe wrap an encrypting stream around the counter: This will
+ // happen BEFORE output counting, and AFTER compression, if encryption
+ // is used.
+ encryptor = MaybeApplyEncryption(entryCounter);
+
+ // Maybe wrap a compressing Stream around that.
+ // This will happen BEFORE encryption (if any) as we write data out.
+ compressor = MaybeApplyCompression(encryptor, fileLength);
+ }
+ else
+ {
+ encryptor = compressor = entryCounter;
+ }
+
+ // Wrap a CrcCalculatorStream around that.
+ // This will happen BEFORE compression (if any) as we write data out.
+ var output = new Ionic.Crc.CrcCalculatorStream(compressor, true);
+
+ // output.Write() causes this flow:
+ // calc-crc -> compress -> encrypt -> count -> actually write
+
+ if (this._Source == ZipEntrySource.WriteDelegate)
+ {
+ // allow the application to write the data
+ this._WriteDelegate(this.FileName, output);
+ }
+ else
+ {
+ // synchronously copy the input stream to the output stream-chain
+ byte[] buffer = new byte[BufferSize];
+ int n;
+ while ((n = SharedUtilities.ReadWithRetry(input, buffer, 0, buffer.Length, FileName)) != 0)
+ {
+ output.Write(buffer, 0, n);
+ OnWriteBlock(output.TotalBytesSlurped, fileLength);
+ if (_ioOperationCanceled)
+ break;
+ }
+ }
+
+ FinishOutputStream(s, entryCounter, encryptor, compressor, output);
+ }
+ finally
+ {
+ if (this._Source == ZipEntrySource.JitStream)
+ {
+ // allow the application to close the stream
+ if (this._CloseDelegate != null)
+ this._CloseDelegate(this.FileName, input);
+ }
+ else if ((input as FileStream) != null)
+ {
+#if NETCF
+ input.Close();
+#else
+ input.Dispose();
+#endif
+ }
+ }
+
+ if (_ioOperationCanceled)
+ return;
+
+ // set FDP now, to allow for re-streaming
+ this.__FileDataPosition = fdp;
+ PostProcessOutput(s);
+ }
+
+
+ /// <summary>
+ /// Set the input stream and get its length, if possible. The length is
+ /// used for progress updates, AND, to allow an optimization in case of
+ /// a stream/file of zero length. In that case we skip the Encrypt and
+ /// compression Stream. (like DeflateStream or BZip2OutputStream)
+ /// </summary>
+ private long SetInputAndFigureFileLength(ref Stream input)
+ {
+ long fileLength = -1L;
+ // get the original stream:
+ if (this._Source == ZipEntrySource.Stream)
+ {
+ PrepSourceStream();
+ input = this._sourceStream;
+
+ // Try to get the length, no big deal if not available.
+ try { fileLength = this._sourceStream.Length; }
+ catch (NotSupportedException) { }
+ }
+ else if (this._Source == ZipEntrySource.ZipFile)
+ {
+ // we are "re-streaming" the zip entry.
+ string pwd = (_Encryption_FromZipFile == EncryptionAlgorithm.None) ? null : (this._Password ?? this._container.Password);
+ this._sourceStream = InternalOpenReader(pwd);
+ PrepSourceStream();
+ input = this._sourceStream;
+ fileLength = this._sourceStream.Length;
+ }
+ else if (this._Source == ZipEntrySource.JitStream)
+ {
+ // allow the application to open the stream
+ if (this._sourceStream == null) _sourceStream = this._OpenDelegate(this.FileName);
+ PrepSourceStream();
+ input = this._sourceStream;
+ try { fileLength = this._sourceStream.Length; }
+ catch (NotSupportedException) { }
+ }
+ else if (this._Source == ZipEntrySource.FileSystem)
+ {
+ // workitem 7145
+ FileShare fs = FileShare.ReadWrite;
+#if !NETCF
+ // FileShare.Delete is not defined for the Compact Framework
+ fs |= FileShare.Delete;
+#endif
+ // workitem 8423
+ input = File.Open(LocalFileName, FileMode.Open, FileAccess.Read, fs);
+ fileLength = input.Length;
+ }
+
+ return fileLength;
+ }
+
+
+
+ internal void FinishOutputStream(Stream s,
+ CountingStream entryCounter,
+ Stream encryptor,
+ Stream compressor,
+ Ionic.Crc.CrcCalculatorStream output)
+ {
+ if (output == null) return;
+
+ output.Close();
+
+ // by calling Close() on the deflate stream, we write the footer bytes, as necessary.
+ if ((compressor as Ionic.Zlib.DeflateStream) != null)
+ compressor.Close();
+#if BZIP
+ else if ((compressor as Ionic.BZip2.BZip2OutputStream) != null)
+ compressor.Close();
+#if !NETCF
+ else if ((compressor as Ionic.BZip2.ParallelBZip2OutputStream) != null)
+ compressor.Close();
+#endif
+#endif
+
+#if !NETCF
+ else if ((compressor as Ionic.Zlib.ParallelDeflateOutputStream) != null)
+ compressor.Close();
+#endif
+
+ encryptor.Flush();
+ encryptor.Close();
+
+ _LengthOfTrailer = 0;
+
+ _UncompressedSize = output.TotalBytesSlurped;
+
+#if AESCRYPTO
+ WinZipAesCipherStream wzacs = encryptor as WinZipAesCipherStream;
+ if (wzacs != null && _UncompressedSize > 0)
+ {
+ s.Write(wzacs.FinalAuthentication, 0, 10);
+ _LengthOfTrailer += 10;
+ }
+#endif
+ _CompressedFileDataSize = entryCounter.BytesWritten;
+ _CompressedSize = _CompressedFileDataSize; // may be adjusted
+ _Crc32 = output.Crc;
+
+ // Set _RelativeOffsetOfLocalHeader now, to allow for re-streaming
+ StoreRelativeOffset();
+ }
+
+
+
+
+ internal void PostProcessOutput(Stream s)
+ {
+ var s1 = s as CountingStream;
+
+ // workitem 8931 - for WriteDelegate.
+ // The WriteDelegate changes things because there can be a zero-byte stream
+ // written. In all other cases DotNetZip knows the length of the stream
+ // before compressing and encrypting. In this case we have to circle back,
+ // and omit all the crypto stuff - the GP bitfield, and the crypto header.
+ if (_UncompressedSize == 0 && _CompressedSize == 0)
+ {
+ if (this._Source == ZipEntrySource.ZipOutputStream) return; // nothing to do...
+
+ if (_Password != null)
+ {
+ int headerBytesToRetract = 0;
+ if (Encryption == EncryptionAlgorithm.PkzipWeak)
+ headerBytesToRetract = 12;
+#if AESCRYPTO
+ else if (Encryption == EncryptionAlgorithm.WinZipAes128 ||
+ Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ headerBytesToRetract = _aesCrypto_forWrite._Salt.Length + _aesCrypto_forWrite.GeneratedPV.Length;
+ }
+#endif
+ if (this._Source == ZipEntrySource.ZipOutputStream && !s.CanSeek)
+ throw new ZipException("Zero bytes written, encryption in use, and non-seekable output.");
+
+ if (Encryption != EncryptionAlgorithm.None)
+ {
+ // seek back in the stream to un-output the security metadata
+ s.Seek(-1 * headerBytesToRetract, SeekOrigin.Current);
+ s.SetLength(s.Position);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(s);
+
+ // workitem 11131
+ // adjust the count on the CountingStream as necessary
+ if (s1 != null) s1.Adjust(headerBytesToRetract);
+
+ // subtract the size of the security header from the _LengthOfHeader
+ _LengthOfHeader -= headerBytesToRetract;
+ __FileDataPosition -= headerBytesToRetract;
+ }
+ _Password = null;
+
+ // turn off the encryption bit
+ _BitField &= ~(0x0001);
+
+ // copy the updated bitfield value into the header
+ int j = 6;
+ _EntryHeader[j++] = (byte)(_BitField & 0x00FF);
+ _EntryHeader[j++] = (byte)((_BitField & 0xFF00) >> 8);
+
+#if AESCRYPTO
+ if (Encryption == EncryptionAlgorithm.WinZipAes128 ||
+ Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ // Fix the extra field - overwrite the 0x9901 headerId
+ // with dummy data. (arbitrarily, 0x9999)
+ Int16 fnLength = (short)(_EntryHeader[26] + _EntryHeader[27] * 256);
+ int offx = 30 + fnLength;
+ int aesIndex = FindExtraFieldSegment(_EntryHeader, offx, 0x9901);
+ if (aesIndex >= 0)
+ {
+ _EntryHeader[aesIndex++] = 0x99;
+ _EntryHeader[aesIndex++] = 0x99;
+ }
+ }
+#endif
+ }
+
+ CompressionMethod = 0;
+ Encryption = EncryptionAlgorithm.None;
+ }
+ else if (_zipCrypto_forWrite != null
+#if AESCRYPTO
+ || _aesCrypto_forWrite != null
+#endif
+ )
+
+ {
+ if (Encryption == EncryptionAlgorithm.PkzipWeak)
+ {
+ _CompressedSize += 12; // 12 extra bytes for the encryption header
+ }
+#if AESCRYPTO
+ else if (Encryption == EncryptionAlgorithm.WinZipAes128 ||
+ Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ // adjust the compressed size to include the variable (salt+pv)
+ // security header and 10-byte trailer. According to the winzip AES
+ // spec, that metadata is included in the "Compressed Size" figure
+ // when encoding the zip archive.
+ _CompressedSize += _aesCrypto_forWrite.SizeOfEncryptionMetadata;
+ }
+#endif
+ }
+
+ int i = 8;
+ _EntryHeader[i++] = (byte)(_CompressionMethod & 0x00FF);
+ _EntryHeader[i++] = (byte)((_CompressionMethod & 0xFF00) >> 8);
+
+ i = 14;
+ // CRC - the correct value now
+ _EntryHeader[i++] = (byte)(_Crc32 & 0x000000FF);
+ _EntryHeader[i++] = (byte)((_Crc32 & 0x0000FF00) >> 8);
+ _EntryHeader[i++] = (byte)((_Crc32 & 0x00FF0000) >> 16);
+ _EntryHeader[i++] = (byte)((_Crc32 & 0xFF000000) >> 24);
+
+ SetZip64Flags();
+
+ // (i==26) filename length (Int16)
+ Int16 filenameLength = (short)(_EntryHeader[26] + _EntryHeader[27] * 256);
+ Int16 extraFieldLength = (short)(_EntryHeader[28] + _EntryHeader[29] * 256);
+
+ if (_OutputUsesZip64.Value)
+ {
+ // VersionNeededToExtract - set to 45 to indicate zip64
+ _EntryHeader[4] = (byte)(45 & 0x00FF);
+ _EntryHeader[5] = 0x00;
+
+ // workitem 7924 - don't need bit 3
+ // // workitem 7917
+ // // set bit 3 for ZIP64 compatibility with WinZip12
+ // _BitField |= 0x0008;
+ // _EntryHeader[6] = (byte)(_BitField & 0x00FF);
+
+ // CompressedSize and UncompressedSize - 0xFF
+ for (int j = 0; j < 8; j++)
+ _EntryHeader[i++] = 0xff;
+
+ // At this point we need to find the "Extra field" that follows the
+ // filename. We had already emitted it, but the data (uncomp, comp,
+ // ROLH) was not available at the time we did so. Here, we emit it
+ // again, with final values.
+
+ i = 30 + filenameLength;
+ _EntryHeader[i++] = 0x01; // zip64
+ _EntryHeader[i++] = 0x00;
+
+ i += 2; // skip over data size, which is 16+4
+
+ Array.Copy(BitConverter.GetBytes(_UncompressedSize), 0, _EntryHeader, i, 8);
+ i += 8;
+ Array.Copy(BitConverter.GetBytes(_CompressedSize), 0, _EntryHeader, i, 8);
+ }
+ else
+ {
+ // VersionNeededToExtract - reset to 20 since no zip64
+ _EntryHeader[4] = (byte)(20 & 0x00FF);
+ _EntryHeader[5] = 0x00;
+
+ // CompressedSize - the correct value now
+ i = 18;
+ _EntryHeader[i++] = (byte)(_CompressedSize & 0x000000FF);
+ _EntryHeader[i++] = (byte)((_CompressedSize & 0x0000FF00) >> 8);
+ _EntryHeader[i++] = (byte)((_CompressedSize & 0x00FF0000) >> 16);
+ _EntryHeader[i++] = (byte)((_CompressedSize & 0xFF000000) >> 24);
+
+ // UncompressedSize - the correct value now
+ _EntryHeader[i++] = (byte)(_UncompressedSize & 0x000000FF);
+ _EntryHeader[i++] = (byte)((_UncompressedSize & 0x0000FF00) >> 8);
+ _EntryHeader[i++] = (byte)((_UncompressedSize & 0x00FF0000) >> 16);
+ _EntryHeader[i++] = (byte)((_UncompressedSize & 0xFF000000) >> 24);
+
+ // The HeaderId in the extra field header, is already dummied out.
+ if (extraFieldLength != 0)
+ {
+ i = 30 + filenameLength;
+ // For zip archives written by this library, if the zip64
+ // header exists, it is the first header. Because of the logic
+ // used when first writing the _EntryHeader bytes, the
+ // HeaderId is not guaranteed to be any particular value. So
+ // we determine if the first header is a putative zip64 header
+ // by examining the datasize. UInt16 HeaderId =
+ // (UInt16)(_EntryHeader[i] + _EntryHeader[i + 1] * 256);
+ Int16 DataSize = (short)(_EntryHeader[i + 2] + _EntryHeader[i + 3] * 256);
+ if (DataSize == 16)
+ {
+ // reset to Header Id to dummy value, effectively dummy-ing out the zip64 metadata
+ _EntryHeader[i++] = 0x99;
+ _EntryHeader[i++] = 0x99;
+ }
+ }
+ }
+
+
+#if AESCRYPTO
+
+ if (Encryption == EncryptionAlgorithm.WinZipAes128 ||
+ Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ // Must set compressionmethod to 0x0063 (decimal 99)
+ //
+ // and then set the compression method bytes inside the extra
+ // field to the actual compression method value.
+
+ i = 8;
+ _EntryHeader[i++] = 0x63;
+ _EntryHeader[i++] = 0;
+
+ i = 30 + filenameLength;
+ do
+ {
+ UInt16 HeaderId = (UInt16)(_EntryHeader[i] + _EntryHeader[i + 1] * 256);
+ Int16 DataSize = (short)(_EntryHeader[i + 2] + _EntryHeader[i + 3] * 256);
+ if (HeaderId != 0x9901)
+ {
+ // skip this header
+ i += DataSize + 4;
+ }
+ else
+ {
+ i += 9;
+ // actual compression method
+ _EntryHeader[i++] = (byte)(_CompressionMethod & 0x00FF);
+ _EntryHeader[i++] = (byte)(_CompressionMethod & 0xFF00);
+ }
+ } while (i < (extraFieldLength - 30 - filenameLength));
+ }
+#endif
+
+ // finally, write the data.
+
+ // workitem 7216 - sometimes we don't seek even if we CAN. ASP.NET
+ // Response.OutputStream, or stdout are non-seekable. But we may also want
+ // to NOT seek in other cases, eg zip64. For all cases, we just check bit 3
+ // to see if we want to seek. There's one exception - if using a
+ // ZipOutputStream, and PKZip encryption is in use, then we set bit 3 even
+ // if the out is seekable. This is so the check on the last byte of the
+ // PKZip Encryption Header can be done on the current time, as opposed to
+ // the CRC, to prevent streaming the file twice. So, test for
+ // ZipOutputStream and seekable, and if so, seek back, even if bit 3 is set.
+
+ if ((_BitField & 0x0008) != 0x0008 ||
+ (this._Source == ZipEntrySource.ZipOutputStream && s.CanSeek))
+ {
+ // seek back and rewrite the entry header
+ var zss = s as ZipSegmentedStream;
+ if (zss != null && _diskNumber != zss.CurrentSegment)
+ {
+ // In this case the entry header is in a different file,
+ // which has already been closed. Need to re-open it.
+ using (Stream hseg = ZipSegmentedStream.ForUpdate(this._container.ZipFile.Name, _diskNumber))
+ {
+ hseg.Seek(this._RelativeOffsetOfLocalHeader, SeekOrigin.Begin);
+ hseg.Write(_EntryHeader, 0, _EntryHeader.Length);
+ }
+ }
+ else
+ {
+ // seek in the raw output stream, to the beginning of the header for
+ // this entry.
+ // workitem 8098: ok (output)
+ s.Seek(this._RelativeOffsetOfLocalHeader, SeekOrigin.Begin);
+
+ // write the updated header to the output stream
+ s.Write(_EntryHeader, 0, _EntryHeader.Length);
+
+ // adjust the count on the CountingStream as necessary
+ if (s1 != null) s1.Adjust(_EntryHeader.Length);
+
+ // seek in the raw output stream, to the end of the file data
+ // for this entry
+ s.Seek(_CompressedSize, SeekOrigin.Current);
+ }
+ }
+
+ // emit the descriptor - only if not a directory.
+ if (((_BitField & 0x0008) == 0x0008) && !IsDirectory)
+ {
+ byte[] Descriptor = new byte[16 + (_OutputUsesZip64.Value ? 8 : 0)];
+ i = 0;
+
+ // signature
+ Array.Copy(BitConverter.GetBytes(ZipConstants.ZipEntryDataDescriptorSignature), 0, Descriptor, i, 4);
+ i += 4;
+
+ // CRC - the correct value now
+ Array.Copy(BitConverter.GetBytes(_Crc32), 0, Descriptor, i, 4);
+ i += 4;
+
+ // workitem 7917
+ if (_OutputUsesZip64.Value)
+ {
+ // CompressedSize - the correct value now
+ Array.Copy(BitConverter.GetBytes(_CompressedSize), 0, Descriptor, i, 8);
+ i += 8;
+
+ // UncompressedSize - the correct value now
+ Array.Copy(BitConverter.GetBytes(_UncompressedSize), 0, Descriptor, i, 8);
+ i += 8;
+ }
+ else
+ {
+ // CompressedSize - (lower 32 bits) the correct value now
+ Descriptor[i++] = (byte)(_CompressedSize & 0x000000FF);
+ Descriptor[i++] = (byte)((_CompressedSize & 0x0000FF00) >> 8);
+ Descriptor[i++] = (byte)((_CompressedSize & 0x00FF0000) >> 16);
+ Descriptor[i++] = (byte)((_CompressedSize & 0xFF000000) >> 24);
+
+ // UncompressedSize - (lower 32 bits) the correct value now
+ Descriptor[i++] = (byte)(_UncompressedSize & 0x000000FF);
+ Descriptor[i++] = (byte)((_UncompressedSize & 0x0000FF00) >> 8);
+ Descriptor[i++] = (byte)((_UncompressedSize & 0x00FF0000) >> 16);
+ Descriptor[i++] = (byte)((_UncompressedSize & 0xFF000000) >> 24);
+ }
+
+ // finally, write the trailing descriptor to the output stream
+ s.Write(Descriptor, 0, Descriptor.Length);
+
+ _LengthOfTrailer += Descriptor.Length;
+ }
+ }
+
+
+
+ private void SetZip64Flags()
+ {
+ // zip64 housekeeping
+ _entryRequiresZip64 = new Nullable<bool>
+ (_CompressedSize >= 0xFFFFFFFF || _UncompressedSize >= 0xFFFFFFFF || _RelativeOffsetOfLocalHeader >= 0xFFFFFFFF);
+
+ // validate the ZIP64 usage
+ if (_container.Zip64 == Zip64Option.Never && _entryRequiresZip64.Value)
+ throw new ZipException("Compressed or Uncompressed size, or offset exceeds the maximum value. Consider setting the UseZip64WhenSaving property on the ZipFile instance.");
+
+ _OutputUsesZip64 = new Nullable<bool>(_container.Zip64 == Zip64Option.Always || _entryRequiresZip64.Value);
+ }
+
+
+
+ /// <summary>
+ /// Prepare the given stream for output - wrap it in a CountingStream, and
+ /// then in a CRC stream, and an encryptor and deflator as appropriate.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// Previously this was used in ZipEntry.Write(), but in an effort to
+ /// introduce some efficiencies in that method I've refactored to put the
+ /// code inline. This method still gets called by ZipOutputStream.
+ /// </para>
+ /// </remarks>
+ internal void PrepOutputStream(Stream s,
+ long streamLength,
+ out CountingStream outputCounter,
+ out Stream encryptor,
+ out Stream compressor,
+ out Ionic.Crc.CrcCalculatorStream output)
+ {
+ TraceWriteLine("PrepOutputStream: e({0}) comp({1}) crypto({2}) zf({3})",
+ FileName,
+ CompressionLevel,
+ Encryption,
+ _container.Name);
+
+ // Wrap a counting stream around the raw output stream:
+ // This is the last thing that happens before the bits go to the
+ // application-provided stream.
+ outputCounter = new CountingStream(s);
+
+ // Sometimes the incoming "raw" output stream is already a CountingStream.
+ // Doesn't matter. Wrap it with a counter anyway. We need to count at both
+ // levels.
+
+ if (streamLength != 0L)
+ {
+ // Maybe wrap an encrypting stream around that:
+ // This will happen BEFORE output counting, and AFTER deflation, if encryption
+ // is used.
+ encryptor = MaybeApplyEncryption(outputCounter);
+
+ // Maybe wrap a compressing Stream around that.
+ // This will happen BEFORE encryption (if any) as we write data out.
+ compressor = MaybeApplyCompression(encryptor, streamLength);
+ }
+ else
+ {
+ encryptor = compressor = outputCounter;
+ }
+ // Wrap a CrcCalculatorStream around that.
+ // This will happen BEFORE compression (if any) as we write data out.
+ output = new Ionic.Crc.CrcCalculatorStream(compressor, true);
+ }
+
+
+
+ private Stream MaybeApplyCompression(Stream s, long streamLength)
+ {
+ if (_CompressionMethod == 0x08 && CompressionLevel != Ionic.Zlib.CompressionLevel.None)
+ {
+#if !NETCF
+ // ParallelDeflateThreshold == 0 means ALWAYS use parallel deflate
+ // ParallelDeflateThreshold == -1L means NEVER use parallel deflate
+ // Other values specify the actual threshold.
+ if (_container.ParallelDeflateThreshold == 0L ||
+ (streamLength > _container.ParallelDeflateThreshold &&
+ _container.ParallelDeflateThreshold > 0L))
+ {
+ // This is sort of hacky.
+ //
+ // It's expensive to create a ParallelDeflateOutputStream, because
+ // of the large memory buffers. But the class is unlike most Stream
+ // classes in that it can be re-used, so the caller can compress
+ // multiple files with it, one file at a time. The key is to call
+ // Reset() on it, in between uses.
+ //
+ // The ParallelDeflateOutputStream is attached to the container
+ // itself - there is just one for the entire ZipFile or
+ // ZipOutputStream. So it gets created once, per save, and then
+ // re-used many times.
+ //
+ // This approach will break when we go to a "parallel save"
+ // approach, where multiple entries within the zip file are being
+ // compressed and saved at the same time. But for now it's ok.
+ //
+
+ // instantiate the ParallelDeflateOutputStream
+ if (_container.ParallelDeflater == null)
+ {
+ _container.ParallelDeflater =
+ new Ionic.Zlib.ParallelDeflateOutputStream(s,
+ CompressionLevel,
+ _container.Strategy,
+ true);
+ // can set the codec buffer size only before the first call to Write().
+ if (_container.CodecBufferSize > 0)
+ _container.ParallelDeflater.BufferSize = _container.CodecBufferSize;
+ if (_container.ParallelDeflateMaxBufferPairs > 0)
+ _container.ParallelDeflater.MaxBufferPairs =
+ _container.ParallelDeflateMaxBufferPairs;
+ }
+ // reset it with the new stream
+ Ionic.Zlib.ParallelDeflateOutputStream o1 = _container.ParallelDeflater;
+ o1.Reset(s);
+ return o1;
+ }
+#endif
+ var o = new Ionic.Zlib.DeflateStream(s, Ionic.Zlib.CompressionMode.Compress,
+ CompressionLevel,
+ true);
+ if (_container.CodecBufferSize > 0)
+ o.BufferSize = _container.CodecBufferSize;
+ o.Strategy = _container.Strategy;
+ return o;
+ }
+
+
+#if BZIP
+ if (_CompressionMethod == 0x0c)
+ {
+#if !NETCF
+ if (_container.ParallelDeflateThreshold == 0L ||
+ (streamLength > _container.ParallelDeflateThreshold &&
+ _container.ParallelDeflateThreshold > 0L))
+ {
+
+ var o1 = new Ionic.BZip2.ParallelBZip2OutputStream(s, true);
+ return o1;
+ }
+#endif
+ var o = new Ionic.BZip2.BZip2OutputStream(s, true);
+ return o;
+ }
+#endif
+
+ return s;
+ }
+
+
+
+ private Stream MaybeApplyEncryption(Stream s)
+ {
+ if (Encryption == EncryptionAlgorithm.PkzipWeak)
+ {
+ TraceWriteLine("MaybeApplyEncryption: e({0}) PKZIP", FileName);
+
+ return new ZipCipherStream(s, _zipCrypto_forWrite, CryptoMode.Encrypt);
+ }
+#if AESCRYPTO
+ if (Encryption == EncryptionAlgorithm.WinZipAes128 ||
+ Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ TraceWriteLine("MaybeApplyEncryption: e({0}) AES", FileName);
+
+ return new WinZipAesCipherStream(s, _aesCrypto_forWrite, CryptoMode.Encrypt);
+ }
+#endif
+ TraceWriteLine("MaybeApplyEncryption: e({0}) None", FileName);
+
+ return s;
+ }
+
+
+
+ private void OnZipErrorWhileSaving(Exception e)
+ {
+ if (_container.ZipFile != null)
+ _ioOperationCanceled = _container.ZipFile.OnZipErrorSaving(this, e);
+ }
+
+
+
+ internal void Write(Stream s)
+ {
+ var cs1 = s as CountingStream;
+ var zss1 = s as ZipSegmentedStream;
+
+ bool done = false;
+ do
+ {
+ try
+ {
+ // When the app is updating a zip file, it may be possible to
+ // just copy data for a ZipEntry from the source zipfile to the
+ // destination, as a block, without decompressing and
+ // recompressing, etc. But, in some cases the app modifies the
+ // properties on a ZipEntry prior to calling Save(). A change to
+ // any of the metadata - the FileName, CompressioLeve and so on,
+ // means DotNetZip cannot simply copy through the existing
+ // ZipEntry data unchanged.
+ //
+ // There are two cases:
+ //
+ // 1. Changes to only metadata, which means the header and
+ // central directory must be changed.
+ //
+ // 2. Changes to the properties that affect the compressed
+ // stream, such as CompressionMethod, CompressionLevel, or
+ // EncryptionAlgorithm. In this case, DotNetZip must
+ // "re-stream" the data: the old entry data must be maybe
+ // decrypted, maybe decompressed, then maybe re-compressed
+ // and maybe re-encrypted.
+ //
+ // This test checks if the source for the entry data is a zip file, and
+ // if a restream is necessary. If NOT, then it just copies through
+ // one entry, potentially changing the metadata.
+
+ if (_Source == ZipEntrySource.ZipFile && !_restreamRequiredOnSave)
+ {
+ CopyThroughOneEntry(s);
+ return;
+ }
+
+ // Is the entry a directory? If so, the write is relatively simple.
+ if (IsDirectory)
+ {
+ WriteHeader(s, 1);
+ StoreRelativeOffset();
+ _entryRequiresZip64 = new Nullable<bool>(_RelativeOffsetOfLocalHeader >= 0xFFFFFFFF);
+ _OutputUsesZip64 = new Nullable<bool>(_container.Zip64 == Zip64Option.Always || _entryRequiresZip64.Value);
+ // handle case for split archives
+ if (zss1 != null)
+ _diskNumber = zss1.CurrentSegment;
+
+ return;
+ }
+
+ // At this point, the source for this entry is not a directory, and
+ // not a previously created zip file, or the source for the entry IS
+ // a previously created zip but the settings whave changed in
+ // important ways and therefore we will need to process the
+ // bytestream (compute crc, maybe compress, maybe encrypt) in order
+ // to write the content into the new zip.
+ //
+ // We do this in potentially 2 passes: The first time we do it as
+ // requested, maybe with compression and maybe encryption. If that
+ // causes the bytestream to inflate in size, and if compression was
+ // on, then we turn off compression and do it again.
+
+
+ bool readAgain = true;
+ int nCycles = 0;
+ do
+ {
+ nCycles++;
+
+ WriteHeader(s, nCycles);
+
+ // write the encrypted header
+ WriteSecurityMetadata(s);
+
+ // write the (potentially compressed, potentially encrypted) file data
+ _WriteEntryData(s);
+
+ // track total entry size (including the trailing descriptor and MAC)
+ _TotalEntrySize = _LengthOfHeader + _CompressedFileDataSize + _LengthOfTrailer;
+
+ // The file data has now been written to the stream, and
+ // the file pointer is positioned directly after file data.
+
+ if (nCycles > 1) readAgain = false;
+ else if (!s.CanSeek) readAgain = false;
+ else readAgain = WantReadAgain();
+
+ if (readAgain)
+ {
+ // Seek back in the raw output stream, to the beginning of the file
+ // data for this entry.
+
+ // handle case for split archives
+ if (zss1 != null)
+ {
+ // Console.WriteLine("***_diskNumber/first: {0}", _diskNumber);
+ // Console.WriteLine("***_diskNumber/current: {0}", zss.CurrentSegment);
+ zss1.TruncateBackward(_diskNumber, _RelativeOffsetOfLocalHeader);
+ }
+ else
+ // workitem 8098: ok (output).
+ s.Seek(_RelativeOffsetOfLocalHeader, SeekOrigin.Begin);
+
+ // If the last entry expands, we read again; but here, we must
+ // truncate the stream to prevent garbage data after the
+ // end-of-central-directory.
+
+ // workitem 8098: ok (output).
+ s.SetLength(s.Position);
+
+ // Adjust the count on the CountingStream as necessary.
+ if (cs1 != null) cs1.Adjust(_TotalEntrySize);
+ }
+ }
+ while (readAgain);
+ _skippedDuringSave = false;
+ done = true;
+ }
+ catch (System.Exception exc1)
+ {
+ ZipErrorAction orig = this.ZipErrorAction;
+ int loop = 0;
+ do
+ {
+ if (ZipErrorAction == ZipErrorAction.Throw)
+ throw;
+
+ if (ZipErrorAction == ZipErrorAction.Skip ||
+ ZipErrorAction == ZipErrorAction.Retry)
+ {
+ // must reset file pointer here.
+ // workitem 13903 - seek back only when necessary
+ long p1 = (cs1 != null)
+ ? cs1.ComputedPosition
+ : s.Position;
+ long delta = p1 - _future_ROLH;
+ if (delta > 0)
+ {
+ s.Seek(delta, SeekOrigin.Current); // may throw
+ long p2 = s.Position;
+ s.SetLength(s.Position); // to prevent garbage if this is the last entry
+ if (cs1 != null) cs1.Adjust(p1 - p2);
+ }
+ if (ZipErrorAction == ZipErrorAction.Skip)
+ {
+ WriteStatus("Skipping file {0} (exception: {1})", LocalFileName, exc1.ToString());
+
+ _skippedDuringSave = true;
+ done = true;
+ }
+ else
+ this.ZipErrorAction = orig;
+ break;
+ }
+
+ if (loop > 0) throw;
+
+ if (ZipErrorAction == ZipErrorAction.InvokeErrorEvent)
+ {
+ OnZipErrorWhileSaving(exc1);
+ if (_ioOperationCanceled)
+ {
+ done = true;
+ break;
+ }
+ }
+ loop++;
+ }
+ while (true);
+ }
+ }
+ while (!done);
+ }
+
+
+ internal void StoreRelativeOffset()
+ {
+ _RelativeOffsetOfLocalHeader = _future_ROLH;
+ }
+
+
+
+ internal void NotifySaveComplete()
+ {
+ // When updating a zip file, there are two contexts for properties
+ // like Encryption or CompressionMethod - the values read from the
+ // original zip file, and the values used in the updated zip file.
+ // The _FromZipFile versions are the originals. At the end of a save,
+ // these values are the same. So we need to update them. This takes
+ // care of the boundary case where a single zipfile instance can be
+ // saved multiple times, with distinct changes to the properties on
+ // the entries, in between each Save().
+ _Encryption_FromZipFile = _Encryption;
+ _CompressionMethod_FromZipFile = _CompressionMethod;
+ _restreamRequiredOnSave = false;
+ _metadataChanged = false;
+ //_Source = ZipEntrySource.None;
+ _Source = ZipEntrySource.ZipFile; // workitem 10694
+ }
+
+
+ internal void WriteSecurityMetadata(Stream outstream)
+ {
+ if (Encryption == EncryptionAlgorithm.None)
+ return;
+
+ string pwd = this._Password;
+
+ // special handling for source == ZipFile.
+ // Want to support the case where we re-stream an encrypted entry. This will involve,
+ // at runtime, reading, decrypting, and decompressing from the original zip file, then
+ // compressing, encrypting, and writing to the output zip file.
+
+ // If that's what we're doing, and the password hasn't been set on the entry,
+ // we use the container (ZipFile/ZipOutputStream) password to decrypt.
+ // This test here says to use the container password to re-encrypt, as well,
+ // with that password, if the entry password is null.
+
+ if (this._Source == ZipEntrySource.ZipFile && pwd == null)
+ pwd = this._container.Password;
+
+ if (pwd == null)
+ {
+ _zipCrypto_forWrite = null;
+#if AESCRYPTO
+ _aesCrypto_forWrite = null;
+#endif
+ return;
+ }
+
+ TraceWriteLine("WriteSecurityMetadata: e({0}) crypto({1}) pw({2})",
+ FileName, Encryption.ToString(), pwd);
+
+ if (Encryption == EncryptionAlgorithm.PkzipWeak)
+ {
+ // If PKZip (weak) encryption is in use, then the encrypted entry data
+ // is preceded by 12-byte "encryption header" for the entry.
+
+ _zipCrypto_forWrite = ZipCrypto.ForWrite(pwd);
+
+ // generate the random 12-byte header:
+ var rnd = new System.Random();
+ byte[] encryptionHeader = new byte[12];
+ rnd.NextBytes(encryptionHeader);
+
+ // workitem 8271
+ if ((this._BitField & 0x0008) == 0x0008)
+ {
+ // In the case that bit 3 of the general purpose bit flag is set to
+ // indicate the presence of a 'data descriptor' (signature
+ // 0x08074b50), the last byte of the decrypted header is sometimes
+ // compared with the high-order byte of the lastmodified time,
+ // rather than the high-order byte of the CRC, to verify the
+ // password.
+ //
+ // This is not documented in the PKWare Appnote.txt.
+ // This was discovered this by analysis of the Crypt.c source file in the
+ // InfoZip library
+ // http://www.info-zip.org/pub/infozip/
+
+ // Also, winzip insists on this!
+ _TimeBlob = Ionic.Zip.SharedUtilities.DateTimeToPacked(LastModified);
+ encryptionHeader[11] = (byte)((this._TimeBlob >> 8) & 0xff);
+ }
+ else
+ {
+ // When bit 3 is not set, the CRC value is required before
+ // encryption of the file data begins. In this case there is no way
+ // around it: must read the stream in its entirety to compute the
+ // actual CRC before proceeding.
+ FigureCrc32();
+ encryptionHeader[11] = (byte)((this._Crc32 >> 24) & 0xff);
+ }
+
+ // Encrypt the random header, INCLUDING the final byte which is either
+ // the high-order byte of the CRC32, or the high-order byte of the
+ // _TimeBlob. Must do this BEFORE encrypting the file data. This
+ // step changes the state of the cipher, or in the words of the PKZIP
+ // spec, it "further initializes" the cipher keys.
+
+ byte[] cipherText = _zipCrypto_forWrite.EncryptMessage(encryptionHeader, encryptionHeader.Length);
+
+ // Write the ciphered bonafide encryption header.
+ outstream.Write(cipherText, 0, cipherText.Length);
+ _LengthOfHeader += cipherText.Length; // 12 bytes
+ }
+
+#if AESCRYPTO
+ else if (Encryption == EncryptionAlgorithm.WinZipAes128 ||
+ Encryption == EncryptionAlgorithm.WinZipAes256)
+ {
+ // If WinZip AES encryption is in use, then the encrypted entry data is
+ // preceded by a variable-sized Salt and a 2-byte "password
+ // verification" value for the entry.
+
+ int keystrength = GetKeyStrengthInBits(Encryption);
+ _aesCrypto_forWrite = WinZipAesCrypto.Generate(pwd, keystrength);
+ outstream.Write(_aesCrypto_forWrite.Salt, 0, _aesCrypto_forWrite._Salt.Length);
+ outstream.Write(_aesCrypto_forWrite.GeneratedPV, 0, _aesCrypto_forWrite.GeneratedPV.Length);
+ _LengthOfHeader += _aesCrypto_forWrite._Salt.Length + _aesCrypto_forWrite.GeneratedPV.Length;
+
+ TraceWriteLine("WriteSecurityMetadata: AES e({0}) keybits({1}) _LOH({2})",
+ FileName, keystrength, _LengthOfHeader);
+
+ }
+#endif
+
+ }
+
+
+
+ private void CopyThroughOneEntry(Stream outStream)
+ {
+ // Just read the entry from the existing input zipfile and write to the output.
+ // But, if metadata has changed (like file times or attributes), or if the ZIP64
+ // option has changed, we can re-stream the entry data but must recompute the
+ // metadata.
+ if (this.LengthOfHeader == 0)
+ throw new BadStateException("Bad header length.");
+
+ // is it necessary to re-constitute new metadata for this entry?
+ bool needRecompute = _metadataChanged ||
+ (this.ArchiveStream is ZipSegmentedStream) ||
+ (outStream is ZipSegmentedStream) ||
+ (_InputUsesZip64 && _container.UseZip64WhenSaving == Zip64Option.Never) ||
+ (!_InputUsesZip64 && _container.UseZip64WhenSaving == Zip64Option.Always);
+
+ if (needRecompute)
+ CopyThroughWithRecompute(outStream);
+ else
+ CopyThroughWithNoChange(outStream);
+
+ // zip64 housekeeping
+ _entryRequiresZip64 = new Nullable<bool>
+ (_CompressedSize >= 0xFFFFFFFF || _UncompressedSize >= 0xFFFFFFFF ||
+ _RelativeOffsetOfLocalHeader >= 0xFFFFFFFF
+ );
+
+ _OutputUsesZip64 = new Nullable<bool>(_container.Zip64 == Zip64Option.Always || _entryRequiresZip64.Value);
+ }
+
+
+
+ private void CopyThroughWithRecompute(Stream outstream)
+ {
+ int n;
+ byte[] bytes = new byte[BufferSize];
+ var input = new CountingStream(this.ArchiveStream);
+
+ long origRelativeOffsetOfHeader = _RelativeOffsetOfLocalHeader;
+
+ // The header length may change due to rename of file, add a comment, etc.
+ // We need to retain the original.
+ int origLengthOfHeader = LengthOfHeader; // including crypto bytes!
+
+ // WriteHeader() has the side effect of changing _RelativeOffsetOfLocalHeader
+ // and setting _LengthOfHeader. While ReadHeader() reads the crypto header if
+ // present, WriteHeader() does not write the crypto header.
+ WriteHeader(outstream, 0);
+ StoreRelativeOffset();
+
+ if (!this.FileName.EndsWith("/"))
+ {
+ // Not a directory; there is file data.
+ // Seek to the beginning of the entry data in the input stream.
+
+ long pos = origRelativeOffsetOfHeader + origLengthOfHeader;
+ int len = GetLengthOfCryptoHeaderBytes(_Encryption_FromZipFile);
+ pos -= len; // want to keep the crypto header
+ _LengthOfHeader += len;
+
+ input.Seek(pos, SeekOrigin.Begin);
+
+ // copy through everything after the header to the output stream
+ long remaining = this._CompressedSize;
+
+ while (remaining > 0)
+ {
+ len = (remaining > bytes.Length) ? bytes.Length : (int)remaining;
+
+ // read
+ n = input.Read(bytes, 0, len);
+ //_CheckRead(n);
+
+ // write
+ outstream.Write(bytes, 0, n);
+ remaining -= n;
+ OnWriteBlock(input.BytesRead, this._CompressedSize);
+ if (_ioOperationCanceled)
+ break;
+ }
+
+ // bit 3 descriptor
+ if ((this._BitField & 0x0008) == 0x0008)
+ {
+ int size = 16;
+ if (_InputUsesZip64) size += 8;
+ byte[] Descriptor = new byte[size];
+ input.Read(Descriptor, 0, size);
+
+ if (_InputUsesZip64 && _container.UseZip64WhenSaving == Zip64Option.Never)
+ {
+ // original descriptor was 24 bytes, now we need 16.
+ // Must check for underflow here.
+ // signature + CRC.
+ outstream.Write(Descriptor, 0, 8);
+
+ // Compressed
+ if (_CompressedSize > 0xFFFFFFFF)
+ throw new InvalidOperationException("ZIP64 is required");
+ outstream.Write(Descriptor, 8, 4);
+
+ // UnCompressed
+ if (_UncompressedSize > 0xFFFFFFFF)
+ throw new InvalidOperationException("ZIP64 is required");
+ outstream.Write(Descriptor, 16, 4);
+ _LengthOfTrailer -= 8;
+ }
+ else if (!_InputUsesZip64 && _container.UseZip64WhenSaving == Zip64Option.Always)
+ {
+ // original descriptor was 16 bytes, now we need 24
+ // signature + CRC
+ byte[] pad = new byte[4];
+ outstream.Write(Descriptor, 0, 8);
+ // Compressed
+ outstream.Write(Descriptor, 8, 4);
+ outstream.Write(pad, 0, 4);
+ // UnCompressed
+ outstream.Write(Descriptor, 12, 4);
+ outstream.Write(pad, 0, 4);
+ _LengthOfTrailer += 8;
+ }
+ else
+ {
+ // same descriptor on input and output. Copy it through.
+ outstream.Write(Descriptor, 0, size);
+ //_LengthOfTrailer += size;
+ }
+ }
+ }
+
+ _TotalEntrySize = _LengthOfHeader + _CompressedFileDataSize + _LengthOfTrailer;
+ }
+
+
+ private void CopyThroughWithNoChange(Stream outstream)
+ {
+ int n;
+ byte[] bytes = new byte[BufferSize];
+ var input = new CountingStream(this.ArchiveStream);
+
+ // seek to the beginning of the entry data in the input stream
+ input.Seek(this._RelativeOffsetOfLocalHeader, SeekOrigin.Begin);
+
+ if (this._TotalEntrySize == 0)
+ {
+ // We've never set the length of the entry.
+ // Set it here.
+ this._TotalEntrySize = this._LengthOfHeader + this._CompressedFileDataSize + _LengthOfTrailer;
+
+ // The CompressedSize includes all the leading metadata associated
+ // to encryption, if any, as well as the compressed data, or
+ // compressed-then-encrypted data, and the trailer in case of AES.
+
+ // The CompressedFileData size is the same, less the encryption
+ // framing data (12 bytes header for PKZip; 10/18 bytes header and
+ // 10 byte trailer for AES).
+
+ // The _LengthOfHeader includes all the zip entry header plus the
+ // crypto header, if any. The _LengthOfTrailer includes the
+ // 10-byte MAC for AES, where appropriate, and the bit-3
+ // Descriptor, where applicable.
+ }
+
+
+ // workitem 5616
+ // remember the offset, within the output stream, of this particular entry header.
+ // This may have changed if any of the other entries changed (eg, if a different
+ // entry was removed or added.)
+ var counter = outstream as CountingStream;
+ _RelativeOffsetOfLocalHeader = (counter != null)
+ ? counter.ComputedPosition
+ : outstream.Position; // BytesWritten
+
+ // copy through the header, filedata, trailer, everything...
+ long remaining = this._TotalEntrySize;
+ while (remaining > 0)
+ {
+ int len = (remaining > bytes.Length) ? bytes.Length : (int)remaining;
+
+ // read
+ n = input.Read(bytes, 0, len);
+ //_CheckRead(n);
+
+ // write
+ outstream.Write(bytes, 0, n);
+ remaining -= n;
+ OnWriteBlock(input.BytesRead, this._TotalEntrySize);
+ if (_ioOperationCanceled)
+ break;
+ }
+ }
+
+
+
+
+ [System.Diagnostics.ConditionalAttribute("Trace")]
+ private void TraceWriteLine(string format, params object[] varParams)
+ {
+ lock (_outputLock)
+ {
+ int tid = System.Threading.Thread.CurrentThread.GetHashCode();
+#if ! (NETCF || SILVERLIGHT)
+ Console.ForegroundColor = (ConsoleColor)(tid % 8 + 8);
+#endif
+ Console.Write("{0:000} ZipEntry.Write ", tid);
+ Console.WriteLine(format, varParams);
+#if ! (NETCF || SILVERLIGHT)
+ Console.ResetColor();
+#endif
+ }
+ }
+
+ private object _outputLock = new Object();
+ }
+}
--- /dev/null
+// ZipEntry.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2006-2010 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-August-06 17:25:53>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the ZipEntry class, which models the entries within a zip file.
+//
+// Created: Tue, 27 Mar 2007 15:30
+//
+// ------------------------------------------------------------------
+
+
+using System;
+using System.IO;
+using Interop = System.Runtime.InteropServices;
+
+namespace Ionic.Zip
+{
+ /// <summary>
+ /// Represents a single entry in a ZipFile. Typically, applications get a ZipEntry
+ /// by enumerating the entries within a ZipFile, or by adding an entry to a ZipFile.
+ /// </summary>
+
+ [Interop.GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d00004")]
+ [Interop.ComVisible(true)]
+#if !NETCF
+ [Interop.ClassInterface(Interop.ClassInterfaceType.AutoDispatch)] // AutoDual
+#endif
+ internal partial class ZipEntry
+ {
+ /// <summary>
+ /// Default constructor.
+ /// </summary>
+ /// <remarks>
+ /// Applications should never need to call this directly. It is exposed to
+ /// support COM Automation environments.
+ /// </remarks>
+ public ZipEntry()
+ {
+ _CompressionMethod = (Int16)CompressionMethod.Deflate;
+ _CompressionLevel = Ionic.Zlib.CompressionLevel.Default;
+ _Encryption = EncryptionAlgorithm.None;
+ _Source = ZipEntrySource.None;
+ AlternateEncoding = System.Text.Encoding.GetEncoding("IBM437");
+ AlternateEncodingUsage = ZipOption.Never;
+ }
+
+ /// <summary>
+ /// The time and date at which the file indicated by the <c>ZipEntry</c> was
+ /// last modified.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The DotNetZip library sets the LastModified value for an entry, equal to
+ /// the Last Modified time of the file in the filesystem. If an entry is
+ /// added from a stream, the library uses <c>System.DateTime.Now</c> for this
+ /// value, for the given entry.
+ /// </para>
+ ///
+ /// <para>
+ /// This property allows the application to retrieve and possibly set the
+ /// LastModified value on an entry, to an arbitrary value. <see
+ /// cref="System.DateTime"/> values with a <see cref="System.DateTimeKind" />
+ /// setting of <c>DateTimeKind.Unspecified</c> are taken to be expressed as
+ /// <c>DateTimeKind.Local</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// Be aware that because of the way <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">PKWare's
+ /// Zip specification</see> describes how times are stored in the zip file,
+ /// the full precision of the <c>System.DateTime</c> datatype is not stored
+ /// for the last modified time when saving zip files. For more information on
+ /// how times are formatted, see the PKZip specification.
+ /// </para>
+ ///
+ /// <para>
+ /// The actual last modified time of a file can be stored in multiple ways in
+ /// the zip file, and they are not mutually exclusive:
+ /// </para>
+ ///
+ /// <list type="bullet">
+ /// <item>
+ /// In the so-called "DOS" format, which has a 2-second precision. Values
+ /// are rounded to the nearest even second. For example, if the time on the
+ /// file is 12:34:43, then it will be stored as 12:34:44. This first value
+ /// is accessible via the <c>LastModified</c> property. This value is always
+ /// present in the metadata for each zip entry. In some cases the value is
+ /// invalid, or zero.
+ /// </item>
+ ///
+ /// <item>
+ /// In the so-called "Windows" or "NTFS" format, as an 8-byte integer
+ /// quantity expressed as the number of 1/10 milliseconds (in other words
+ /// the number of 100 nanosecond units) since January 1, 1601 (UTC). This
+ /// format is how Windows represents file times. This time is accessible
+ /// via the <c>ModifiedTime</c> property.
+ /// </item>
+ ///
+ /// <item>
+ /// In the "Unix" format, a 4-byte quantity specifying the number of seconds since
+ /// January 1, 1970 UTC.
+ /// </item>
+ ///
+ /// <item>
+ /// In an older format, now deprecated but still used by some current
+ /// tools. This format is also a 4-byte quantity specifying the number of
+ /// seconds since January 1, 1970 UTC.
+ /// </item>
+ ///
+ /// </list>
+ ///
+ /// <para>
+ /// Zip tools and libraries will always at least handle (read or write) the
+ /// DOS time, and may also handle the other time formats. Keep in mind that
+ /// while the names refer to particular operating systems, there is nothing in
+ /// the time formats themselves that prevents their use on other operating
+ /// systems.
+ /// </para>
+ ///
+ /// <para>
+ /// When reading ZIP files, the DotNetZip library reads the Windows-formatted
+ /// time, if it is stored in the entry, and sets both <c>LastModified</c> and
+ /// <c>ModifiedTime</c> to that value. When writing ZIP files, the DotNetZip
+ /// library by default will write both time quantities. It can also emit the
+ /// Unix-formatted time if desired (See <see
+ /// cref="EmitTimesInUnixFormatWhenSaving"/>.)
+ /// </para>
+ ///
+ /// <para>
+ /// The last modified time of the file created upon a call to
+ /// <c>ZipEntry.Extract()</c> may be adjusted during extraction to compensate
+ /// for differences in how the .NET Base Class Library deals with daylight
+ /// saving time (DST) versus how the Windows filesystem deals with daylight
+ /// saving time. Raymond Chen <see
+ /// href="http://blogs.msdn.com/oldnewthing/archive/2003/10/24/55413.aspx">provides
+ /// some good context</see>.
+ /// </para>
+ ///
+ /// <para>
+ /// In a nutshell: Daylight savings time rules change regularly. In 2007, for
+ /// example, the inception week of DST changed. In 1977, DST was in place all
+ /// year round. In 1945, likewise. And so on. Win32 does not attempt to
+ /// guess which time zone rules were in effect at the time in question. It
+ /// will render a time as "standard time" and allow the app to change to DST
+ /// as necessary. .NET makes a different choice.
+ /// </para>
+ ///
+ /// <para>
+ /// Compare the output of FileInfo.LastWriteTime.ToString("f") with what you
+ /// see in the Windows Explorer property sheet for a file that was last
+ /// written to on the other side of the DST transition. For example, suppose
+ /// the file was last modified on October 17, 2003, during DST but DST is not
+ /// currently in effect. Explorer's file properties reports Thursday, October
+ /// 17, 2003, 8:45:38 AM, but .NETs FileInfo reports Thursday, October 17,
+ /// 2003, 9:45 AM.
+ /// </para>
+ ///
+ /// <para>
+ /// Win32 says, "Thursday, October 17, 2002 8:45:38 AM PST". Note: Pacific
+ /// STANDARD Time. Even though October 17 of that year occurred during Pacific
+ /// Daylight Time, Win32 displays the time as standard time because that's
+ /// what time it is NOW.
+ /// </para>
+ ///
+ /// <para>
+ /// .NET BCL assumes that the current DST rules were in place at the time in
+ /// question. So, .NET says, "Well, if the rules in effect now were also in
+ /// effect on October 17, 2003, then that would be daylight time" so it
+ /// displays "Thursday, October 17, 2003, 9:45 AM PDT" - daylight time.
+ /// </para>
+ ///
+ /// <para>
+ /// So .NET gives a value which is more intuitively correct, but is also
+ /// potentially incorrect, and which is not invertible. Win32 gives a value
+ /// which is intuitively incorrect, but is strictly correct.
+ /// </para>
+ ///
+ /// <para>
+ /// Because of this funkiness, this library adds one hour to the LastModified
+ /// time on the extracted file, if necessary. That is to say, if the time in
+ /// question had occurred in what the .NET Base Class Library assumed to be
+ /// DST. This assumption may be wrong given the constantly changing DST rules,
+ /// but it is the best we can do.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ public DateTime LastModified
+ {
+ get { return _LastModified.ToLocalTime(); }
+ set
+ {
+ _LastModified = (value.Kind == DateTimeKind.Unspecified)
+ ? DateTime.SpecifyKind(value, DateTimeKind.Local)
+ : value.ToLocalTime();
+ _Mtime = Ionic.Zip.SharedUtilities.AdjustTime_Reverse(_LastModified).ToUniversalTime();
+ _metadataChanged = true;
+ }
+ }
+
+
+ private int BufferSize
+ {
+ get
+ {
+ return this._container.BufferSize;
+ }
+ }
+
+ /// <summary>
+ /// Last Modified time for the file represented by the entry.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This value corresponds to the "last modified" time in the NTFS file times
+ /// as described in <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">the Zip
+ /// specification</see>. When getting this property, the value may be
+ /// different from <see cref="LastModified" />. When setting the property,
+ /// the <see cref="LastModified"/> property also gets set, but with a lower
+ /// precision.
+ /// </para>
+ ///
+ /// <para>
+ /// Let me explain. It's going to take a while, so get
+ /// comfortable. Originally, waaaaay back in 1989 when the ZIP specification
+ /// was originally described by the esteemed Mr. Phil Katz, the dominant
+ /// operating system of the time was MS-DOS. MSDOS stored file times with a
+ /// 2-second precision, because, c'mon, <em>who is ever going to need better
+ /// resolution than THAT?</em> And so ZIP files, regardless of the platform on
+ /// which the zip file was created, store file times in exactly <see
+ /// href="http://www.vsft.com/hal/dostime.htm">the same format that DOS used
+ /// in 1989</see>.
+ /// </para>
+ ///
+ /// <para>
+ /// Since then, the ZIP spec has evolved, but the internal format for file
+ /// timestamps remains the same. Despite the fact that the way times are
+ /// stored in a zip file is rooted in DOS heritage, any program on any
+ /// operating system can format a time in this way, and most zip tools and
+ /// libraries DO - they round file times to the nearest even second and store
+ /// it just like DOS did 25+ years ago.
+ /// </para>
+ ///
+ /// <para>
+ /// PKWare extended the ZIP specification to allow a zip file to store what
+ /// are called "NTFS Times" and "Unix(tm) times" for a file. These are the
+ /// <em>last write</em>, <em>last access</em>, and <em>file creation</em>
+ /// times of a particular file. These metadata are not actually specific
+ /// to NTFS or Unix. They are tracked for each file by NTFS and by various
+ /// Unix filesystems, but they are also tracked by other filesystems, too.
+ /// The key point is that the times are <em>formatted in the zip file</em>
+ /// in the same way that NTFS formats the time (ticks since win32 epoch),
+ /// or in the same way that Unix formats the time (seconds since Unix
+ /// epoch). As with the DOS time, any tool or library running on any
+ /// operating system is capable of formatting a time in one of these ways
+ /// and embedding it into the zip file.
+ /// </para>
+ ///
+ /// <para>
+ /// These extended times are higher precision quantities than the DOS time.
+ /// As described above, the (DOS) LastModified has a precision of 2 seconds.
+ /// The Unix time is stored with a precision of 1 second. The NTFS time is
+ /// stored with a precision of 0.0000001 seconds. The quantities are easily
+ /// convertible, except for the loss of precision you may incur.
+ /// </para>
+ ///
+ /// <para>
+ /// A zip archive can store the {C,A,M} times in NTFS format, in Unix format,
+ /// or not at all. Often a tool running on Unix or Mac will embed the times
+ /// in Unix format (1 second precision), while WinZip running on Windows might
+ /// embed the times in NTFS format (precision of of 0.0000001 seconds). When
+ /// reading a zip file with these "extended" times, in either format,
+ /// DotNetZip represents the values with the
+ /// <c>ModifiedTime</c>, <c>AccessedTime</c> and <c>CreationTime</c>
+ /// properties on the <c>ZipEntry</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// While any zip application or library, regardless of the platform it
+ /// runs on, could use any of the time formats allowed by the ZIP
+ /// specification, not all zip tools or libraries do support all these
+ /// formats. Storing the higher-precision times for each entry is
+ /// optional for zip files, and many tools and libraries don't use the
+ /// higher precision quantities at all. The old DOS time, represented by
+ /// <see cref="LastModified"/>, is guaranteed to be present, though it
+ /// sometimes unset.
+ /// </para>
+ ///
+ /// <para>
+ /// Ok, getting back to the question about how the <c>LastModified</c>
+ /// property relates to this <c>ModifiedTime</c>
+ /// property... <c>LastModified</c> is always set, while
+ /// <c>ModifiedTime</c> is not. (The other times stored in the <em>NTFS
+ /// times extension</em>, <c>CreationTime</c> and <c>AccessedTime</c> also
+ /// may not be set on an entry that is read from an existing zip file.)
+ /// When reading a zip file, then <c>LastModified</c> takes the DOS time
+ /// that is stored with the file. If the DOS time has been stored as zero
+ /// in the zipfile, then this library will use <c>DateTime.Now</c> for the
+ /// <c>LastModified</c> value. If the ZIP file was created by an evolved
+ /// tool, then there will also be higher precision NTFS or Unix times in
+ /// the zip file. In that case, this library will read those times, and
+ /// set <c>LastModified</c> and <c>ModifiedTime</c> to the same value, the
+ /// one corresponding to the last write time of the file. If there are no
+ /// higher precision times stored for the entry, then <c>ModifiedTime</c>
+ /// remains unset (likewise <c>AccessedTime</c> and <c>CreationTime</c>),
+ /// and <c>LastModified</c> keeps its DOS time.
+ /// </para>
+ ///
+ /// <para>
+ /// When creating zip files with this library, by default the extended time
+ /// properties (<c>ModifiedTime</c>, <c>AccessedTime</c>, and
+ /// <c>CreationTime</c>) are set on the ZipEntry instance, and these data are
+ /// stored in the zip archive for each entry, in NTFS format. If you add an
+ /// entry from an actual filesystem file, then the entry gets the actual file
+ /// times for that file, to NTFS-level precision. If you add an entry from a
+ /// stream, or a string, then the times get the value <c>DateTime.Now</c>. In
+ /// this case <c>LastModified</c> and <c>ModifiedTime</c> will be identical,
+ /// to 2 seconds of precision. You can explicitly set the
+ /// <c>CreationTime</c>, <c>AccessedTime</c>, and <c>ModifiedTime</c> of an
+ /// entry using the property setters. If you want to set all of those
+ /// quantities, it's more efficient to use the <see
+ /// cref="SetEntryTimes(DateTime, DateTime, DateTime)"/> method. Those
+ /// changes are not made permanent in the zip file until you call <see
+ /// cref="ZipFile.Save()"/> or one of its cousins.
+ /// </para>
+ ///
+ /// <para>
+ /// When creating a zip file, you can override the default behavior of
+ /// this library for formatting times in the zip file, disabling the
+ /// embedding of file times in NTFS format or enabling the storage of file
+ /// times in Unix format, or both. You may want to do this, for example,
+ /// when creating a zip file on Windows, that will be consumed on a Mac,
+ /// by an application that is not hip to the "NTFS times" format. To do
+ /// this, use the <see cref="EmitTimesInWindowsFormatWhenSaving"/> and
+ /// <see cref="EmitTimesInUnixFormatWhenSaving"/> properties. A valid zip
+ /// file may store the file times in both formats. But, there are no
+ /// guarantees that a program running on Mac or Linux will gracefully
+ /// handle the NTFS-formatted times when Unix times are present, or that a
+ /// non-DotNetZip-powered application running on Windows will be able to
+ /// handle file times in Unix format. DotNetZip will always do something
+ /// reasonable; other libraries or tools may not. When in doubt, test.
+ /// </para>
+ ///
+ /// <para>
+ /// I'll bet you didn't think one person could type so much about time, eh?
+ /// And reading it was so enjoyable, too! Well, in appreciation, <see
+ /// href="http://cheeso.members.winisp.net/DotNetZipDonate.aspx">maybe you
+ /// should donate</see>?
+ /// </para>
+ /// </remarks>
+ ///
+ /// <seealso cref="AccessedTime"/>
+ /// <seealso cref="CreationTime"/>
+ /// <seealso cref="Ionic.Zip.ZipEntry.LastModified"/>
+ /// <seealso cref="SetEntryTimes"/>
+ public DateTime ModifiedTime
+ {
+ get { return _Mtime; }
+ set
+ {
+ SetEntryTimes(_Ctime, _Atime, value);
+ }
+ }
+
+ /// <summary>
+ /// Last Access time for the file represented by the entry.
+ /// </summary>
+ /// <remarks>
+ /// This value may or may not be meaningful. If the <c>ZipEntry</c> was read from an existing
+ /// Zip archive, this information may not be available. For an explanation of why, see
+ /// <see cref="ModifiedTime"/>.
+ /// </remarks>
+ /// <seealso cref="ModifiedTime"/>
+ /// <seealso cref="CreationTime"/>
+ /// <seealso cref="SetEntryTimes"/>
+ public DateTime AccessedTime
+ {
+ get { return _Atime; }
+ set
+ {
+ SetEntryTimes(_Ctime, value, _Mtime);
+ }
+ }
+
+ /// <summary>
+ /// The file creation time for the file represented by the entry.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This value may or may not be meaningful. If the <c>ZipEntry</c> was read
+ /// from an existing zip archive, and the creation time was not set on the entry
+ /// when the zip file was created, then this property may be meaningless. For an
+ /// explanation of why, see <see cref="ModifiedTime"/>.
+ /// </remarks>
+ /// <seealso cref="ModifiedTime"/>
+ /// <seealso cref="AccessedTime"/>
+ /// <seealso cref="SetEntryTimes"/>
+ public DateTime CreationTime
+ {
+ get { return _Ctime; }
+ set
+ {
+ SetEntryTimes(value, _Atime, _Mtime);
+ }
+ }
+
+ /// <summary>
+ /// Sets the NTFS Creation, Access, and Modified times for the given entry.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// When adding an entry from a file or directory, the Creation, Access, and
+ /// Modified times for the given entry are automatically set from the
+ /// filesystem values. When adding an entry from a stream or string, the
+ /// values are implicitly set to DateTime.Now. The application may wish to
+ /// set these values to some arbitrary value, before saving the archive, and
+ /// can do so using the various setters. If you want to set all of the times,
+ /// this method is more efficient.
+ /// </para>
+ ///
+ /// <para>
+ /// The values you set here will be retrievable with the <see
+ /// cref="ModifiedTime"/>, <see cref="CreationTime"/> and <see
+ /// cref="AccessedTime"/> properties.
+ /// </para>
+ ///
+ /// <para>
+ /// When this method is called, if both <see
+ /// cref="EmitTimesInWindowsFormatWhenSaving"/> and <see
+ /// cref="EmitTimesInUnixFormatWhenSaving"/> are false, then the
+ /// <c>EmitTimesInWindowsFormatWhenSaving</c> flag is automatically set.
+ /// </para>
+ ///
+ /// <para>
+ /// DateTime values provided here without a DateTimeKind are assumed to be Local Time.
+ /// </para>
+ ///
+ /// </remarks>
+ /// <param name="created">the creation time of the entry.</param>
+ /// <param name="accessed">the last access time of the entry.</param>
+ /// <param name="modified">the last modified time of the entry.</param>
+ ///
+ /// <seealso cref="EmitTimesInWindowsFormatWhenSaving" />
+ /// <seealso cref="EmitTimesInUnixFormatWhenSaving" />
+ /// <seealso cref="AccessedTime"/>
+ /// <seealso cref="CreationTime"/>
+ /// <seealso cref="ModifiedTime"/>
+ public void SetEntryTimes(DateTime created, DateTime accessed, DateTime modified)
+ {
+ _ntfsTimesAreSet = true;
+ if (created == _zeroHour && created.Kind == _zeroHour.Kind) created = _win32Epoch;
+ if (accessed == _zeroHour && accessed.Kind == _zeroHour.Kind) accessed = _win32Epoch;
+ if (modified == _zeroHour && modified.Kind == _zeroHour.Kind) modified = _win32Epoch;
+ _Ctime = created.ToUniversalTime();
+ _Atime = accessed.ToUniversalTime();
+ _Mtime = modified.ToUniversalTime();
+ _LastModified = _Mtime;
+ if (!_emitUnixTimes && !_emitNtfsTimes)
+ _emitNtfsTimes = true;
+ _metadataChanged = true;
+ }
+
+
+
+ /// <summary>
+ /// Specifies whether the Creation, Access, and Modified times for the given
+ /// entry will be emitted in "Windows format" when the zip archive is saved.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// An application creating a zip archive can use this flag to explicitly
+ /// specify that the file times for the entry should or should not be stored
+ /// in the zip archive in the format used by Windows. The default value of
+ /// this property is <c>true</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// When adding an entry from a file or directory, the Creation (<see
+ /// cref="CreationTime"/>), Access (<see cref="AccessedTime"/>), and Modified
+ /// (<see cref="ModifiedTime"/>) times for the given entry are automatically
+ /// set from the filesystem values. When adding an entry from a stream or
+ /// string, all three values are implicitly set to DateTime.Now. Applications
+ /// can also explicitly set those times by calling <see
+ /// cref="SetEntryTimes(DateTime, DateTime, DateTime)" />.
+ /// </para>
+ ///
+ /// <para>
+ /// <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">PKWARE's
+ /// zip specification</see> describes multiple ways to format these times in a
+ /// zip file. One is the format Windows applications normally use: 100ns ticks
+ /// since Jan 1, 1601 UTC. The other is a format Unix applications typically
+ /// use: seconds since January 1, 1970 UTC. Each format can be stored in an
+ /// "extra field" in the zip entry when saving the zip archive. The former
+ /// uses an extra field with a Header Id of 0x000A, while the latter uses a
+ /// header ID of 0x5455.
+ /// </para>
+ ///
+ /// <para>
+ /// Not all zip tools and libraries can interpret these fields. Windows
+ /// compressed folders is one that can read the Windows Format timestamps,
+ /// while I believe the <see href="http://www.info-zip.org/">Infozip</see>
+ /// tools can read the Unix format timestamps. Although the time values are
+ /// easily convertible, subject to a loss of precision, some tools and
+ /// libraries may be able to read only one or the other. DotNetZip can read or
+ /// write times in either or both formats.
+ /// </para>
+ ///
+ /// <para>
+ /// The times stored are taken from <see cref="ModifiedTime"/>, <see
+ /// cref="AccessedTime"/>, and <see cref="CreationTime"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// This property is not mutually exclusive from the <see
+ /// cref="ZipEntry.EmitTimesInUnixFormatWhenSaving"/> property. It is
+ /// possible that a zip entry can embed the timestamps in both forms, one
+ /// form, or neither. But, there are no guarantees that a program running on
+ /// Mac or Linux will gracefully handle NTFS Formatted times, or that a
+ /// non-DotNetZip-powered application running on Windows will be able to
+ /// handle file times in Unix format. When in doubt, test.
+ /// </para>
+ ///
+ /// <para>
+ /// Normally you will use the <see
+ /// cref="ZipFile.EmitTimesInWindowsFormatWhenSaving">ZipFile.EmitTimesInWindowsFormatWhenSaving</see>
+ /// property, to specify the behavior for all entries in a zip, rather than
+ /// the property on each individual entry.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <seealso cref="SetEntryTimes(DateTime, DateTime, DateTime)"/>
+ /// <seealso cref="EmitTimesInUnixFormatWhenSaving"/>
+ /// <seealso cref="CreationTime"/>
+ /// <seealso cref="AccessedTime"/>
+ /// <seealso cref="ModifiedTime"/>
+ public bool EmitTimesInWindowsFormatWhenSaving
+ {
+ get
+ {
+ return _emitNtfsTimes;
+ }
+ set
+ {
+ _emitNtfsTimes = value;
+ _metadataChanged = true;
+ }
+ }
+
+ /// <summary>
+ /// Specifies whether the Creation, Access, and Modified times for the given
+ /// entry will be emitted in "Unix(tm) format" when the zip archive is saved.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// An application creating a zip archive can use this flag to explicitly
+ /// specify that the file times for the entry should or should not be stored
+ /// in the zip archive in the format used by Unix. By default this flag is
+ /// <c>false</c>, meaning the Unix-format times are not stored in the zip
+ /// archive.
+ /// </para>
+ ///
+ /// <para>
+ /// When adding an entry from a file or directory, the Creation (<see
+ /// cref="CreationTime"/>), Access (<see cref="AccessedTime"/>), and Modified
+ /// (<see cref="ModifiedTime"/>) times for the given entry are automatically
+ /// set from the filesystem values. When adding an entry from a stream or
+ /// string, all three values are implicitly set to DateTime.Now. Applications
+ /// can also explicitly set those times by calling <see
+ /// cref="SetEntryTimes(DateTime, DateTime, DateTime)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">PKWARE's
+ /// zip specification</see> describes multiple ways to format these times in a
+ /// zip file. One is the format Windows applications normally use: 100ns ticks
+ /// since Jan 1, 1601 UTC. The other is a format Unix applications typically
+ /// use: seconds since Jan 1, 1970 UTC. Each format can be stored in an
+ /// "extra field" in the zip entry when saving the zip archive. The former
+ /// uses an extra field with a Header Id of 0x000A, while the latter uses a
+ /// header ID of 0x5455.
+ /// </para>
+ ///
+ /// <para>
+ /// Not all tools and libraries can interpret these fields. Windows
+ /// compressed folders is one that can read the Windows Format timestamps,
+ /// while I believe the <see href="http://www.info-zip.org/">Infozip</see>
+ /// tools can read the Unix format timestamps. Although the time values are
+ /// easily convertible, subject to a loss of precision, some tools and
+ /// libraries may be able to read only one or the other. DotNetZip can read or
+ /// write times in either or both formats.
+ /// </para>
+ ///
+ /// <para>
+ /// The times stored are taken from <see cref="ModifiedTime"/>, <see
+ /// cref="AccessedTime"/>, and <see cref="CreationTime"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// This property is not mutually exclusive from the <see
+ /// cref="ZipEntry.EmitTimesInWindowsFormatWhenSaving"/> property. It is
+ /// possible that a zip entry can embed the timestamps in both forms, one
+ /// form, or neither. But, there are no guarantees that a program running on
+ /// Mac or Linux will gracefully handle NTFS Formatted times, or that a
+ /// non-DotNetZip-powered application running on Windows will be able to
+ /// handle file times in Unix format. When in doubt, test.
+ /// </para>
+ ///
+ /// <para>
+ /// Normally you will use the <see
+ /// cref="ZipFile.EmitTimesInUnixFormatWhenSaving">ZipFile.EmitTimesInUnixFormatWhenSaving</see>
+ /// property, to specify the behavior for all entries, rather than the
+ /// property on each individual entry.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <seealso cref="SetEntryTimes(DateTime, DateTime, DateTime)"/>
+ /// <seealso cref="EmitTimesInWindowsFormatWhenSaving"/>
+ /// <seealso cref="ZipFile.EmitTimesInUnixFormatWhenSaving"/>
+ /// <seealso cref="CreationTime"/>
+ /// <seealso cref="AccessedTime"/>
+ /// <seealso cref="ModifiedTime"/>
+ public bool EmitTimesInUnixFormatWhenSaving
+ {
+ get
+ {
+ return _emitUnixTimes;
+ }
+ set
+ {
+ _emitUnixTimes = value;
+ _metadataChanged = true;
+ }
+ }
+
+
+ /// <summary>
+ /// The type of timestamp attached to the ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This property is valid only for a ZipEntry that was read from a zip archive.
+ /// It indicates the type of timestamp attached to the entry.
+ /// </remarks>
+ ///
+ /// <seealso cref="EmitTimesInWindowsFormatWhenSaving"/>
+ /// <seealso cref="EmitTimesInUnixFormatWhenSaving"/>
+ public ZipEntryTimestamp Timestamp
+ {
+ get
+ {
+ return _timestamp;
+ }
+ }
+
+ /// <summary>
+ /// The file attributes for the entry.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// The <see cref="System.IO.FileAttributes">attributes</see> in NTFS include
+ /// ReadOnly, Archive, Hidden, System, and Indexed. When adding a
+ /// <c>ZipEntry</c> to a ZipFile, these attributes are set implicitly when
+ /// adding an entry from the filesystem. When adding an entry from a stream
+ /// or string, the Attributes are not set implicitly. Regardless of the way
+ /// an entry was added to a <c>ZipFile</c>, you can set the attributes
+ /// explicitly if you like.
+ /// </para>
+ ///
+ /// <para>
+ /// When reading a <c>ZipEntry</c> from a <c>ZipFile</c>, the attributes are
+ /// set according to the data stored in the <c>ZipFile</c>. If you extract the
+ /// entry from the archive to a filesystem file, DotNetZip will set the
+ /// attributes on the resulting file accordingly.
+ /// </para>
+ ///
+ /// <para>
+ /// The attributes can be set explicitly by the application. For example the
+ /// application may wish to set the <c>FileAttributes.ReadOnly</c> bit for all
+ /// entries added to an archive, so that on unpack, this attribute will be set
+ /// on the extracted file. Any changes you make to this property are made
+ /// permanent only when you call a <c>Save()</c> method on the <c>ZipFile</c>
+ /// instance that contains the ZipEntry.
+ /// </para>
+ ///
+ /// <para>
+ /// For example, an application may wish to zip up a directory and set the
+ /// ReadOnly bit on every file in the archive, so that upon later extraction,
+ /// the resulting files will be marked as ReadOnly. Not every extraction tool
+ /// respects these attributes, but if you unpack with DotNetZip, as for
+ /// example in a self-extracting archive, then the attributes will be set as
+ /// they are stored in the <c>ZipFile</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// These attributes may not be interesting or useful if the resulting archive
+ /// is extracted on a non-Windows platform. How these attributes get used
+ /// upon extraction depends on the platform and tool used.
+ /// </para>
+ ///
+ /// <para>
+ /// This property is only partially supported in the Silverlight version
+ /// of the library: applications can read attributes on entries within
+ /// ZipFiles. But extracting entries within Silverlight will not set the
+ /// attributes on the extracted files.
+ /// </para>
+ ///
+ /// </remarks>
+ public System.IO.FileAttributes Attributes
+ {
+ // workitem 7071
+ get { return (System.IO.FileAttributes)_ExternalFileAttrs; }
+ set
+ {
+ _ExternalFileAttrs = (int)value;
+ // Since the application is explicitly setting the attributes, overwriting
+ // whatever was there, we will explicitly set the Version made by field.
+ // workitem 7926 - "version made by" OS should be zero for compat with WinZip
+ _VersionMadeBy = (0 << 8) + 45; // v4.5 of the spec
+ _metadataChanged = true;
+ }
+ }
+
+
+ /// <summary>
+ /// The name of the filesystem file, referred to by the ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This property specifies the thing-to-be-zipped on disk, and is set only
+ /// when the <c>ZipEntry</c> is being created from a filesystem file. If the
+ /// <c>ZipFile</c> is instantiated by reading an existing .zip archive, then
+ /// the LocalFileName will be <c>null</c> (<c>Nothing</c> in VB).
+ /// </para>
+ ///
+ /// <para>
+ /// When it is set, the value of this property may be different than <see
+ /// cref="FileName"/>, which is the path used in the archive itself. If you
+ /// call <c>Zip.AddFile("foop.txt", AlternativeDirectory)</c>, then the path
+ /// used for the <c>ZipEntry</c> within the zip archive will be different
+ /// than this path.
+ /// </para>
+ ///
+ /// <para>
+ /// If the entry is being added from a stream, then this is null (Nothing in VB).
+ /// </para>
+ ///
+ /// </remarks>
+ /// <seealso cref="FileName"/>
+ internal string LocalFileName
+ {
+ get { return _LocalFileName; }
+ }
+
+ /// <summary>
+ /// The name of the file contained in the ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This is the name of the entry in the <c>ZipFile</c> itself. When creating
+ /// a zip archive, if the <c>ZipEntry</c> has been created from a filesystem
+ /// file, via a call to <see cref="ZipFile.AddFile(String,String)"/> or <see
+ /// cref="ZipFile.AddItem(String,String)"/>, or a related overload, the value
+ /// of this property is derived from the name of that file. The
+ /// <c>FileName</c> property does not include drive letters, and may include a
+ /// different directory path, depending on the value of the
+ /// <c>directoryPathInArchive</c> parameter used when adding the entry into
+ /// the <c>ZipFile</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// In some cases there is no related filesystem file - for example when a
+ /// <c>ZipEntry</c> is created using <see cref="ZipFile.AddEntry(string,
+ /// string)"/> or one of the similar overloads. In this case, the value of
+ /// this property is derived from the fileName and the directory path passed
+ /// to that method.
+ /// </para>
+ ///
+ /// <para>
+ /// When reading a zip file, this property takes the value of the entry name
+ /// as stored in the zip file. If you extract such an entry, the extracted
+ /// file will take the name given by this property.
+ /// </para>
+ ///
+ /// <para>
+ /// Applications can set this property when creating new zip archives or when
+ /// reading existing archives. When setting this property, the actual value
+ /// that is set will replace backslashes with forward slashes, in accordance
+ /// with <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">the Zip
+ /// specification</see>, for compatibility with Unix(tm) and ... get
+ /// this.... Amiga!
+ /// </para>
+ ///
+ /// <para>
+ /// If an application reads a <c>ZipFile</c> via <see
+ /// cref="ZipFile.Read(String)"/> or a related overload, and then explicitly
+ /// sets the FileName on an entry contained within the <c>ZipFile</c>, and
+ /// then calls <see cref="ZipFile.Save()"/>, the application will effectively
+ /// rename the entry within the zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// If an application sets the value of <c>FileName</c>, then calls
+ /// <c>Extract()</c> on the entry, the entry is extracted to a file using the
+ /// newly set value as the filename. The <c>FileName</c> value is made
+ /// permanent in the zip archive only <em>after</em> a call to one of the
+ /// <c>ZipFile.Save()</c> methods on the <c>ZipFile</c> that contains the
+ /// ZipEntry.
+ /// </para>
+ ///
+ /// <para>
+ /// If an application attempts to set the <c>FileName</c> to a value that
+ /// would result in a duplicate entry in the <c>ZipFile</c>, an exception is
+ /// thrown.
+ /// </para>
+ ///
+ /// <para>
+ /// When a <c>ZipEntry</c> is contained within a <c>ZipFile</c>, applications
+ /// cannot rename the entry within the context of a <c>foreach</c> (<c>For
+ /// Each</c> in VB) loop, because of the way the <c>ZipFile</c> stores
+ /// entries. If you need to enumerate through all the entries and rename one
+ /// or more of them, use <see
+ /// cref="ZipFile.EntriesSorted">ZipFile.EntriesSorted</see> as the
+ /// collection. See also, <see
+ /// cref="ZipFile.GetEnumerator()">ZipFile.GetEnumerator()</see>.
+ /// </para>
+ ///
+ /// </remarks>
+ public string FileName
+ {
+ get { return _FileNameInArchive; }
+ set
+ {
+ if (_container.ZipFile == null)
+ throw new ZipException("Cannot rename; this is not supported in ZipOutputStream/ZipInputStream.");
+
+ // rename the entry!
+ if (String.IsNullOrEmpty(value)) throw new ZipException("The FileName must be non empty and non-null.");
+
+ var filename = ZipEntry.NameInArchive(value, null);
+ // workitem 8180
+ if (_FileNameInArchive == filename) return; // nothing to do
+
+ // workitem 8047 - when renaming, must remove old and then add a new entry
+ this._container.ZipFile.RemoveEntry(this);
+ this._container.ZipFile.InternalAddEntry(filename, this);
+
+ _FileNameInArchive = filename;
+ _container.ZipFile.NotifyEntryChanged();
+ _metadataChanged = true;
+ }
+ }
+
+
+ /// <summary>
+ /// The stream that provides content for the ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// The application can use this property to set the input stream for an
+ /// entry on a just-in-time basis. Imagine a scenario where the application
+ /// creates a <c>ZipFile</c> comprised of content obtained from hundreds of
+ /// files, via calls to <c>AddFile()</c>. The DotNetZip library opens streams
+ /// on these files on a just-in-time basis, only when writing the entry out to
+ /// an external store within the scope of a <c>ZipFile.Save()</c> call. Only
+ /// one input stream is opened at a time, as each entry is being written out.
+ /// </para>
+ ///
+ /// <para>
+ /// Now imagine a different application that creates a <c>ZipFile</c>
+ /// with content obtained from hundreds of streams, added through <see
+ /// cref="ZipFile.AddEntry(string, System.IO.Stream)"/>. Normally the
+ /// application would supply an open stream to that call. But when large
+ /// numbers of streams are being added, this can mean many open streams at one
+ /// time, unnecessarily.
+ /// </para>
+ ///
+ /// <para>
+ /// To avoid this, call <see cref="ZipFile.AddEntry(String, OpenDelegate,
+ /// CloseDelegate)"/> and specify delegates that open and close the stream at
+ /// the time of Save.
+ /// </para>
+ ///
+ ///
+ /// <para>
+ /// Setting the value of this property when the entry was not added from a
+ /// stream (for example, when the <c>ZipEntry</c> was added with <see
+ /// cref="ZipFile.AddFile(String)"/> or <see
+ /// cref="ZipFile.AddDirectory(String)"/>, or when the entry was added by
+ /// reading an existing zip archive) will throw an exception.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ public Stream InputStream
+ {
+ get { return _sourceStream; }
+
+ set
+ {
+ if (this._Source != ZipEntrySource.Stream)
+ throw new ZipException("You must not set the input stream for this entry.");
+
+ _sourceWasJitProvided = true;
+ _sourceStream = value;
+ }
+ }
+
+
+ /// <summary>
+ /// A flag indicating whether the InputStream was provided Just-in-time.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// When creating a zip archive, an application can obtain content for one or
+ /// more of the <c>ZipEntry</c> instances from streams, using the <see
+ /// cref="ZipFile.AddEntry(string, System.IO.Stream)"/> method. At the time
+ /// of calling that method, the application can supply null as the value of
+ /// the stream parameter. By doing so, the application indicates to the
+ /// library that it will provide a stream for the entry on a just-in-time
+ /// basis, at the time one of the <c>ZipFile.Save()</c> methods is called and
+ /// the data for the various entries are being compressed and written out.
+ /// </para>
+ ///
+ /// <para>
+ /// In this case, the application can set the <see cref="InputStream"/>
+ /// property, typically within the SaveProgress event (event type: <see
+ /// cref="ZipProgressEventType.Saving_BeforeWriteEntry"/>) for that entry.
+ /// </para>
+ ///
+ /// <para>
+ /// The application will later want to call Close() and Dispose() on that
+ /// stream. In the SaveProgress event, when the event type is <see
+ /// cref="ZipProgressEventType.Saving_AfterWriteEntry"/>, the application can
+ /// do so. This flag indicates that the stream has been provided by the
+ /// application on a just-in-time basis and that it is the application's
+ /// responsibility to call Close/Dispose on that stream.
+ /// </para>
+ ///
+ /// </remarks>
+ /// <seealso cref="InputStream"/>
+ public bool InputStreamWasJitProvided
+ {
+ get { return _sourceWasJitProvided; }
+ }
+
+
+
+ /// <summary>
+ /// An enum indicating the source of the ZipEntry.
+ /// </summary>
+ public ZipEntrySource Source
+ {
+ get { return _Source; }
+ }
+
+
+ /// <summary>
+ /// The version of the zip engine needed to read the ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This is a readonly property, indicating the version of <a
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">the Zip
+ /// specification</a> that the extracting tool or library must support to
+ /// extract the given entry. Generally higher versions indicate newer
+ /// features. Older zip engines obviously won't know about new features, and
+ /// won't be able to extract entries that depend on those newer features.
+ /// </para>
+ ///
+ /// <list type="table">
+ /// <listheader>
+ /// <term>value</term>
+ /// <description>Features</description>
+ /// </listheader>
+ ///
+ /// <item>
+ /// <term>20</term>
+ /// <description>a basic Zip Entry, potentially using PKZIP encryption.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>45</term>
+ /// <description>The ZIP64 extension is used on the entry.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>46</term>
+ /// <description> File is compressed using BZIP2 compression*</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>50</term>
+ /// <description> File is encrypted using PkWare's DES, 3DES, (broken) RC2 or RC4</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>51</term>
+ /// <description> File is encrypted using PKWare's AES encryption or corrected RC2 encryption.</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>52</term>
+ /// <description> File is encrypted using corrected RC2-64 encryption**</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>61</term>
+ /// <description> File is encrypted using non-OAEP key wrapping***</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>63</term>
+ /// <description> File is compressed using LZMA, PPMd+, Blowfish, or Twofish</description>
+ /// </item>
+ ///
+ /// </list>
+ ///
+ /// <para>
+ /// There are other values possible, not listed here. DotNetZip supports
+ /// regular PKZip encryption, and ZIP64 extensions. DotNetZip cannot extract
+ /// entries that require a zip engine higher than 45.
+ /// </para>
+ ///
+ /// <para>
+ /// This value is set upon reading an existing zip file, or after saving a zip
+ /// archive.
+ /// </para>
+ /// </remarks>
+ public Int16 VersionNeeded
+ {
+ get { return _VersionNeeded; }
+ }
+
+ /// <summary>
+ /// The comment attached to the ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Each entry in a zip file can optionally have a comment associated to
+ /// it. The comment might be displayed by a zip tool during extraction, for
+ /// example.
+ /// </para>
+ ///
+ /// <para>
+ /// By default, the <c>Comment</c> is encoded in IBM437 code page. You can
+ /// specify an alternative with <see cref="AlternateEncoding"/> and
+ /// <see cref="AlternateEncodingUsage"/>.
+ /// </para>
+ /// </remarks>
+ /// <seealso cref="AlternateEncoding"/>
+ /// <seealso cref="AlternateEncodingUsage"/>
+ public string Comment
+ {
+ get { return _Comment; }
+ set
+ {
+ _Comment = value;
+ _metadataChanged = true;
+ }
+ }
+
+
+ /// <summary>
+ /// Indicates whether the entry requires ZIP64 extensions.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This property is null (Nothing in VB) until a <c>Save()</c> method on the
+ /// containing <see cref="ZipFile"/> instance has been called. The property is
+ /// non-null (<c>HasValue</c> is true) only after a <c>Save()</c> method has
+ /// been called.
+ /// </para>
+ ///
+ /// <para>
+ /// After the containing <c>ZipFile</c> has been saved, the Value of this
+ /// property is true if any of the following three conditions holds: the
+ /// uncompressed size of the entry is larger than 0xFFFFFFFF; the compressed
+ /// size of the entry is larger than 0xFFFFFFFF; the relative offset of the
+ /// entry within the zip archive is larger than 0xFFFFFFFF. These quantities
+ /// are not known until a <c>Save()</c> is attempted on the zip archive and
+ /// the compression is applied.
+ /// </para>
+ ///
+ /// <para>
+ /// If none of the three conditions holds, then the <c>Value</c> is false.
+ /// </para>
+ ///
+ /// <para>
+ /// A <c>Value</c> of false does not indicate that the entry, as saved in the
+ /// zip archive, does not use ZIP64. It merely indicates that ZIP64 is
+ /// <em>not required</em>. An entry may use ZIP64 even when not required if
+ /// the <see cref="ZipFile.UseZip64WhenSaving"/> property on the containing
+ /// <c>ZipFile</c> instance is set to <see cref="Zip64Option.Always"/>, or if
+ /// the <see cref="ZipFile.UseZip64WhenSaving"/> property on the containing
+ /// <c>ZipFile</c> instance is set to <see cref="Zip64Option.AsNecessary"/>
+ /// and the output stream was not seekable.
+ /// </para>
+ ///
+ /// </remarks>
+ /// <seealso cref="OutputUsedZip64"/>
+ public Nullable<bool> RequiresZip64
+ {
+ get
+ {
+ return _entryRequiresZip64;
+ }
+ }
+
+ /// <summary>
+ /// Indicates whether the entry actually used ZIP64 extensions, as it was most
+ /// recently written to the output file or stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This Nullable property is null (Nothing in VB) until a <c>Save()</c>
+ /// method on the containing <see cref="ZipFile"/> instance has been
+ /// called. <c>HasValue</c> is true only after a <c>Save()</c> method has been
+ /// called.
+ /// </para>
+ ///
+ /// <para>
+ /// The value of this property for a particular <c>ZipEntry</c> may change
+ /// over successive calls to <c>Save()</c> methods on the containing ZipFile,
+ /// even if the file that corresponds to the <c>ZipEntry</c> does not. This
+ /// may happen if other entries contained in the <c>ZipFile</c> expand,
+ /// causing the offset for this particular entry to exceed 0xFFFFFFFF.
+ /// </para>
+ /// </remarks>
+ /// <seealso cref="RequiresZip64"/>
+ public Nullable<bool> OutputUsedZip64
+ {
+ get { return _OutputUsesZip64; }
+ }
+
+
+ /// <summary>
+ /// The bitfield for the entry as defined in the zip spec. You probably
+ /// never need to look at this.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// You probably do not need to concern yourself with the contents of this
+ /// property, but in case you do:
+ /// </para>
+ ///
+ /// <list type="table">
+ /// <listheader>
+ /// <term>bit</term>
+ /// <description>meaning</description>
+ /// </listheader>
+ ///
+ /// <item>
+ /// <term>0</term>
+ /// <description>set if encryption is used.</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>1-2</term>
+ /// <description>
+ /// set to determine whether normal, max, fast deflation. DotNetZip library
+ /// always leaves these bits unset when writing (indicating "normal"
+ /// deflation"), but can read an entry with any value here.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>3</term>
+ /// <description>
+ /// Indicates that the Crc32, Compressed and Uncompressed sizes are zero in the
+ /// local header. This bit gets set on an entry during writing a zip file, when
+ /// it is saved to a non-seekable output stream.
+ /// </description>
+ /// </item>
+ ///
+ ///
+ /// <item>
+ /// <term>4</term>
+ /// <description>reserved for "enhanced deflating". This library doesn't do enhanced deflating.</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>5</term>
+ /// <description>set to indicate the zip is compressed patched data. This library doesn't do that.</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>6</term>
+ /// <description>
+ /// set if PKWare's strong encryption is used (must also set bit 1 if bit 6 is
+ /// set). This bit is not set if WinZip's AES encryption is set.</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>7</term>
+ /// <description>not used</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>8</term>
+ /// <description>not used</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>9</term>
+ /// <description>not used</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>10</term>
+ /// <description>not used</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>11</term>
+ /// <description>
+ /// Language encoding flag (EFS). If this bit is set, the filename and comment
+ /// fields for this file must be encoded using UTF-8. This library currently
+ /// does not support UTF-8.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>12</term>
+ /// <description>Reserved by PKWARE for enhanced compression.</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>13</term>
+ /// <description>
+ /// Used when encrypting the Central Directory to indicate selected data
+ /// values in the Local Header are masked to hide their actual values. See
+ /// the section in <a
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">the Zip
+ /// specification</a> describing the Strong Encryption Specification for
+ /// details.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>14</term>
+ /// <description>Reserved by PKWARE.</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>15</term>
+ /// <description>Reserved by PKWARE.</description>
+ /// </item>
+ ///
+ /// </list>
+ ///
+ /// </remarks>
+ public Int16 BitField
+ {
+ get { return _BitField; }
+ }
+
+ /// <summary>
+ /// The compression method employed for this ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// <see href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">The
+ /// Zip specification</see> allows a variety of compression methods. This
+ /// library supports just two: 0x08 = Deflate. 0x00 = Store (no compression),
+ /// for reading or writing.
+ /// </para>
+ ///
+ /// <para>
+ /// When reading an entry from an existing zipfile, the value you retrieve
+ /// here indicates the compression method used on the entry by the original
+ /// creator of the zip. When writing a zipfile, you can specify either 0x08
+ /// (Deflate) or 0x00 (None). If you try setting something else, you will get
+ /// an exception.
+ /// </para>
+ ///
+ /// <para>
+ /// You may wish to set <c>CompressionMethod</c> to <c>CompressionMethod.None</c> (0)
+ /// when zipping already-compressed data like a jpg, png, or mp3 file.
+ /// This can save time and cpu cycles.
+ /// </para>
+ ///
+ /// <para>
+ /// When setting this property on a <c>ZipEntry</c> that is read from an
+ /// existing zip file, calling <c>ZipFile.Save()</c> will cause the new
+ /// CompressionMethod to be used on the entry in the newly saved zip file.
+ /// </para>
+ ///
+ /// <para>
+ /// Setting this property may have the side effect of modifying the
+ /// <c>CompressionLevel</c> property. If you set the <c>CompressionMethod</c> to a
+ /// value other than <c>None</c>, and <c>CompressionLevel</c> is previously
+ /// set to <c>None</c>, then <c>CompressionLevel</c> will be set to
+ /// <c>Default</c>.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <seealso cref="CompressionMethod"/>
+ ///
+ /// <example>
+ /// In this example, the first entry added to the zip archive uses the default
+ /// behavior - compression is used where it makes sense. The second entry,
+ /// the MP3 file, is added to the archive without being compressed.
+ /// <code>
+ /// using (ZipFile zip = new ZipFile(ZipFileToCreate))
+ /// {
+ /// ZipEntry e1= zip.AddFile(@"notes\Readme.txt");
+ /// ZipEntry e2= zip.AddFile(@"music\StopThisTrain.mp3");
+ /// e2.CompressionMethod = CompressionMethod.None;
+ /// zip.Save();
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As New ZipFile(ZipFileToCreate)
+ /// zip.AddFile("notes\Readme.txt")
+ /// Dim e2 as ZipEntry = zip.AddFile("music\StopThisTrain.mp3")
+ /// e2.CompressionMethod = CompressionMethod.None
+ /// zip.Save
+ /// End Using
+ /// </code>
+ /// </example>
+ public CompressionMethod CompressionMethod
+ {
+ get { return (CompressionMethod)_CompressionMethod; }
+ set
+ {
+ if (value == (CompressionMethod)_CompressionMethod) return; // nothing to do.
+
+ if (value != CompressionMethod.None && value != CompressionMethod.Deflate
+#if BZIP
+ && value != CompressionMethod.BZip2
+#endif
+ )
+ throw new InvalidOperationException("Unsupported compression method.");
+
+ // If the source is a zip archive and there was encryption on the
+ // entry, changing the compression method is not supported.
+ // if (this._Source == ZipEntrySource.ZipFile && _sourceIsEncrypted)
+ // throw new InvalidOperationException("Cannot change compression method on encrypted entries read from archives.");
+
+ _CompressionMethod = (Int16)value;
+
+ if (_CompressionMethod == (Int16)Ionic.Zip.CompressionMethod.None)
+ _CompressionLevel = Ionic.Zlib.CompressionLevel.None;
+ else if (CompressionLevel == Ionic.Zlib.CompressionLevel.None)
+ _CompressionLevel = Ionic.Zlib.CompressionLevel.Default;
+
+ if (_container.ZipFile != null) _container.ZipFile.NotifyEntryChanged();
+ _restreamRequiredOnSave = true;
+ }
+ }
+
+
+ /// <summary>
+ /// Sets the compression level to be used for the entry when saving the zip
+ /// archive. This applies only for CompressionMethod = DEFLATE.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// When using the DEFLATE compression method, Varying the compression
+ /// level used on entries can affect the size-vs-speed tradeoff when
+ /// compression and decompressing data streams or files.
+ /// </para>
+ ///
+ /// <para>
+ /// If you do not set this property, the default compression level is used,
+ /// which normally gives a good balance of compression efficiency and
+ /// compression speed. In some tests, using <c>BestCompression</c> can
+ /// double the time it takes to compress, while delivering just a small
+ /// increase in compression efficiency. This behavior will vary with the
+ /// type of data you compress. If you are in doubt, just leave this setting
+ /// alone, and accept the default.
+ /// </para>
+ ///
+ /// <para>
+ /// When setting this property on a <c>ZipEntry</c> that is read from an
+ /// existing zip file, calling <c>ZipFile.Save()</c> will cause the new
+ /// <c>CompressionLevel</c> to be used on the entry in the newly saved zip file.
+ /// </para>
+ ///
+ /// <para>
+ /// Setting this property may have the side effect of modifying the
+ /// <c>CompressionMethod</c> property. If you set the <c>CompressionLevel</c>
+ /// to a value other than <c>None</c>, <c>CompressionMethod</c> will be set
+ /// to <c>Deflate</c>, if it was previously <c>None</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// Setting this property has no effect if the <c>CompressionMethod</c> is something
+ /// other than <c>Deflate</c> or <c>None</c>.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <seealso cref="CompressionMethod"/>
+ public Ionic.Zlib.CompressionLevel CompressionLevel
+ {
+ get
+ {
+ return _CompressionLevel;
+ }
+ set
+ {
+ if (_CompressionMethod != (short)CompressionMethod.Deflate &&
+ _CompressionMethod != (short)CompressionMethod.None)
+ return ; // no effect
+
+ if (value == Ionic.Zlib.CompressionLevel.Default &&
+ _CompressionMethod == (short)CompressionMethod.Deflate) return; // nothing to do
+ _CompressionLevel = value;
+
+ if (value == Ionic.Zlib.CompressionLevel.None &&
+ _CompressionMethod == (short)CompressionMethod.None)
+ return; // nothing more to do
+
+ if (_CompressionLevel == Ionic.Zlib.CompressionLevel.None)
+ _CompressionMethod = (short) Ionic.Zip.CompressionMethod.None;
+ else
+ _CompressionMethod = (short) Ionic.Zip.CompressionMethod.Deflate;
+
+ if (_container.ZipFile != null) _container.ZipFile.NotifyEntryChanged();
+ _restreamRequiredOnSave = true;
+ }
+ }
+
+
+
+ /// <summary>
+ /// The compressed size of the file, in bytes, within the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// When reading a <c>ZipFile</c>, this value is read in from the existing
+ /// zip file. When creating or updating a <c>ZipFile</c>, the compressed
+ /// size is computed during compression. Therefore the value on a
+ /// <c>ZipEntry</c> is valid after a call to <c>Save()</c> (or one of its
+ /// overloads) in that case.
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipEntry.UncompressedSize"/>
+ public Int64 CompressedSize
+ {
+ get { return _CompressedSize; }
+ }
+
+ /// <summary>
+ /// The size of the file, in bytes, before compression, or after extraction.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// When reading a <c>ZipFile</c>, this value is read in from the existing
+ /// zip file. When creating or updating a <c>ZipFile</c>, the uncompressed
+ /// size is computed during compression. Therefore the value on a
+ /// <c>ZipEntry</c> is valid after a call to <c>Save()</c> (or one of its
+ /// overloads) in that case.
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipEntry.CompressedSize"/>
+ public Int64 UncompressedSize
+ {
+ get { return _UncompressedSize; }
+ }
+
+ /// <summary>
+ /// The ratio of compressed size to uncompressed size of the ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This is a ratio of the compressed size to the uncompressed size of the
+ /// entry, expressed as a double in the range of 0 to 100+. A value of 100
+ /// indicates no compression at all. It could be higher than 100 when the
+ /// compression algorithm actually inflates the data, as may occur for small
+ /// files, or uncompressible data that is encrypted.
+ /// </para>
+ ///
+ /// <para>
+ /// You could format it for presentation to a user via a format string of
+ /// "{3,5:F0}%" to see it as a percentage.
+ /// </para>
+ ///
+ /// <para>
+ /// If the size of the original uncompressed file is 0, implying a
+ /// denominator of 0, the return value will be zero.
+ /// </para>
+ ///
+ /// <para>
+ /// This property is valid after reading in an existing zip file, or after
+ /// saving the <c>ZipFile</c> that contains the ZipEntry. You cannot know the
+ /// effect of a compression transform until you try it.
+ /// </para>
+ ///
+ /// </remarks>
+ public Double CompressionRatio
+ {
+ get
+ {
+ if (UncompressedSize == 0) return 0;
+ return 100 * (1.0 - (1.0 * CompressedSize) / (1.0 * UncompressedSize));
+ }
+ }
+
+ /// <summary>
+ /// The 32-bit CRC (Cyclic Redundancy Check) on the contents of the ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para> You probably don't need to concern yourself with this. It is used
+ /// internally by DotNetZip to verify files or streams upon extraction. </para>
+ ///
+ /// <para> The value is a <see href="http://en.wikipedia.org/wiki/CRC32">32-bit
+ /// CRC</see> using 0xEDB88320 for the polynomial. This is the same CRC-32 used in
+ /// PNG, MPEG-2, and other protocols and formats. It is a read-only property; when
+ /// creating a Zip archive, the CRC for each entry is set only after a call to
+ /// <c>Save()</c> on the containing ZipFile. When reading an existing zip file, the value
+ /// of this property reflects the stored CRC for the entry. </para>
+ ///
+ /// </remarks>
+ public Int32 Crc
+ {
+ get { return _Crc32; }
+ }
+
+ /// <summary>
+ /// True if the entry is a directory (not a file).
+ /// This is a readonly property on the entry.
+ /// </summary>
+ public bool IsDirectory
+ {
+ get { return _IsDirectory; }
+ }
+
+ /// <summary>
+ /// A derived property that is <c>true</c> if the entry uses encryption.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This is a readonly property on the entry. When reading a zip file,
+ /// the value for the <c>ZipEntry</c> is determined by the data read
+ /// from the zip file. After saving a ZipFile, the value of this
+ /// property for each <c>ZipEntry</c> indicates whether encryption was
+ /// actually used (which will have been true if the <see
+ /// cref="Password"/> was set and the <see cref="Encryption"/> property
+ /// was something other than <see cref="EncryptionAlgorithm.None"/>.
+ /// </para>
+ /// </remarks>
+ public bool UsesEncryption
+ {
+ get { return (_Encryption_FromZipFile != EncryptionAlgorithm.None); }
+ }
+
+
+ /// <summary>
+ /// Set this to specify which encryption algorithm to use for the entry when
+ /// saving it to a zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// Set this property in order to encrypt the entry when the <c>ZipFile</c> is
+ /// saved. When setting this property, you must also set a <see
+ /// cref="Password"/> on the entry. If you set a value other than <see
+ /// cref="EncryptionAlgorithm.None"/> on this property and do not set a
+ /// <c>Password</c> then the entry will not be encrypted. The <c>ZipEntry</c>
+ /// data is encrypted as the <c>ZipFile</c> is saved, when you call <see
+ /// cref="ZipFile.Save()"/> or one of its cousins on the containing
+ /// <c>ZipFile</c> instance. You do not need to specify the <c>Encryption</c>
+ /// when extracting entries from an archive.
+ /// </para>
+ ///
+ /// <para>
+ /// The Zip specification from PKWare defines a set of encryption algorithms,
+ /// and the data formats for the zip archive that support them, and PKWare
+ /// supports those algorithms in the tools it produces. Other vendors of tools
+ /// and libraries, such as WinZip or Xceed, typically support <em>a
+ /// subset</em> of the algorithms specified by PKWare. These tools can
+ /// sometimes support additional different encryption algorithms and data
+ /// formats, not specified by PKWare. The AES Encryption specified and
+ /// supported by WinZip is the most popular example. This library supports a
+ /// subset of the complete set of algorithms specified by PKWare and other
+ /// vendors.
+ /// </para>
+ ///
+ /// <para>
+ /// There is no common, ubiquitous multi-vendor standard for strong encryption
+ /// within zip files. There is broad support for so-called "traditional" Zip
+ /// encryption, sometimes called Zip 2.0 encryption, as <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">specified
+ /// by PKWare</see>, but this encryption is considered weak and
+ /// breakable. This library currently supports the Zip 2.0 "weak" encryption,
+ /// and also a stronger WinZip-compatible AES encryption, using either 128-bit
+ /// or 256-bit key strength. If you want DotNetZip to support an algorithm
+ /// that is not currently supported, call the author of this library and maybe
+ /// we can talk business.
+ /// </para>
+ ///
+ /// <para>
+ /// The <see cref="ZipFile"/> class also has a <see
+ /// cref="ZipFile.Encryption"/> property. In most cases you will use
+ /// <em>that</em> property when setting encryption. This property takes
+ /// precedence over any <c>Encryption</c> set on the <c>ZipFile</c> itself.
+ /// Typically, you would use the per-entry Encryption when most entries in the
+ /// zip archive use one encryption algorithm, and a few entries use a
+ /// different one. If all entries in the zip file use the same Encryption,
+ /// then it is simpler to just set this property on the ZipFile itself, when
+ /// creating a zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// Some comments on updating archives: If you read a <c>ZipFile</c>, you can
+ /// modify the Encryption on an encrypted entry: you can remove encryption
+ /// from an entry that was encrypted; you can encrypt an entry that was not
+ /// encrypted previously; or, you can change the encryption algorithm. The
+ /// changes in encryption are not made permanent until you call Save() on the
+ /// <c>ZipFile</c>. To effect changes in encryption, the entry content is
+ /// streamed through several transformations, depending on the modification
+ /// the application has requested. For example if the entry is not encrypted
+ /// and the application sets <c>Encryption</c> to <c>PkzipWeak</c>, then at
+ /// the time of <c>Save()</c>, the original entry is read and decompressed,
+ /// then re-compressed and encrypted. Conversely, if the original entry is
+ /// encrypted with <c>PkzipWeak</c> encryption, and the application sets the
+ /// <c>Encryption</c> property to <c>WinZipAes128</c>, then at the time of
+ /// <c>Save()</c>, the original entry is decrypted via PKZIP encryption and
+ /// decompressed, then re-compressed and re-encrypted with AES. This all
+ /// happens automatically within the library, but it can be time-consuming for
+ /// large entries.
+ /// </para>
+ ///
+ /// <para>
+ /// Additionally, when updating archives, it is not possible to change the
+ /// password when changing the encryption algorithm. To change both the
+ /// algorithm and the password, you need to Save() the zipfile twice. First
+ /// set the <c>Encryption</c> to None, then call <c>Save()</c>. Then set the
+ /// <c>Encryption</c> to the new value (not "None"), then call <c>Save()</c>
+ /// once again.
+ /// </para>
+ ///
+ /// <para>
+ /// The WinZip AES encryption algorithms are not supported on the .NET Compact
+ /// Framework.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// <para>
+ /// This example creates a zip archive that uses encryption, and then extracts
+ /// entries from the archive. When creating the zip archive, the ReadMe.txt
+ /// file is zipped without using a password or encryption. The other file
+ /// uses encryption.
+ /// </para>
+ /// <code>
+ /// // Create a zip archive with AES Encryption.
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// zip.AddFile("ReadMe.txt")
+ /// ZipEntry e1= zip.AddFile("2008-Regional-Sales-Report.pdf");
+ /// e1.Encryption= EncryptionAlgorithm.WinZipAes256;
+ /// e1.Password= "Top.Secret.No.Peeking!";
+ /// zip.Save("EncryptedArchive.zip");
+ /// }
+ ///
+ /// // Extract a zip archive that uses AES Encryption.
+ /// // You do not need to specify the algorithm during extraction.
+ /// using (ZipFile zip = ZipFile.Read("EncryptedArchive.zip"))
+ /// {
+ /// // Specify the password that is used during extraction, for
+ /// // all entries that require a password:
+ /// zip.Password= "Top.Secret.No.Peeking!";
+ /// zip.ExtractAll("extractDirectory");
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// ' Create a zip that uses Encryption.
+ /// Using zip As New ZipFile()
+ /// zip.AddFile("ReadMe.txt")
+ /// Dim e1 as ZipEntry
+ /// e1= zip.AddFile("2008-Regional-Sales-Report.pdf")
+ /// e1.Encryption= EncryptionAlgorithm.WinZipAes256
+ /// e1.Password= "Top.Secret.No.Peeking!"
+ /// zip.Save("EncryptedArchive.zip")
+ /// End Using
+ ///
+ /// ' Extract a zip archive that uses AES Encryption.
+ /// ' You do not need to specify the algorithm during extraction.
+ /// Using (zip as ZipFile = ZipFile.Read("EncryptedArchive.zip"))
+ /// ' Specify the password that is used during extraction, for
+ /// ' all entries that require a password:
+ /// zip.Password= "Top.Secret.No.Peeking!"
+ /// zip.ExtractAll("extractDirectory")
+ /// End Using
+ /// </code>
+ ///
+ /// </example>
+ ///
+ /// <exception cref="System.InvalidOperationException">
+ /// Thrown in the setter if EncryptionAlgorithm.Unsupported is specified.
+ /// </exception>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipEntry.Password">ZipEntry.Password</seealso>
+ /// <seealso cref="Ionic.Zip.ZipFile.Encryption">ZipFile.Encryption</seealso>
+ public EncryptionAlgorithm Encryption
+ {
+ get
+ {
+ return _Encryption;
+ }
+ set
+ {
+ if (value == _Encryption) return; // no change
+
+ if (value == EncryptionAlgorithm.Unsupported)
+ throw new InvalidOperationException("You may not set Encryption to that value.");
+
+ // If the source is a zip archive and there was encryption
+ // on the entry, this will not work. <XXX>
+ //if (this._Source == ZipEntrySource.ZipFile && _sourceIsEncrypted)
+ // throw new InvalidOperationException("You cannot change the encryption method on encrypted entries read from archives.");
+
+ _Encryption = value;
+ _restreamRequiredOnSave = true;
+ if (_container.ZipFile!=null)
+ _container.ZipFile.NotifyEntryChanged();
+ }
+ }
+
+
+ /// <summary>
+ /// The Password to be used when encrypting a <c>ZipEntry</c> upon
+ /// <c>ZipFile.Save()</c>, or when decrypting an entry upon Extract().
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This is a write-only property on the entry. Set this to request that the
+ /// entry be encrypted when writing the zip archive, or set it to specify the
+ /// password to be used when extracting an existing entry that is encrypted.
+ /// </para>
+ ///
+ /// <para>
+ /// The password set here is implicitly used to encrypt the entry during the
+ /// <see cref="ZipFile.Save()"/> operation, or to decrypt during the <see
+ /// cref="Extract()"/> or <see cref="OpenReader()"/> operation. If you set
+ /// the Password on a <c>ZipEntry</c> after calling <c>Save()</c>, there is no
+ /// effect.
+ /// </para>
+ ///
+ /// <para>
+ /// Consider setting the <see cref="Encryption"/> property when using a
+ /// password. Answering concerns that the standard password protection
+ /// supported by all zip tools is weak, WinZip has extended the ZIP
+ /// specification with a way to use AES Encryption to protect entries in the
+ /// Zip file. Unlike the "PKZIP 2.0" encryption specified in the PKZIP
+ /// specification, <see href=
+ /// "http://en.wikipedia.org/wiki/Advanced_Encryption_Standard">AES
+ /// Encryption</see> uses a standard, strong, tested, encryption
+ /// algorithm. DotNetZip can create zip archives that use WinZip-compatible
+ /// AES encryption, if you set the <see cref="Encryption"/> property. But,
+ /// archives created that use AES encryption may not be readable by all other
+ /// tools and libraries. For example, Windows Explorer cannot read a
+ /// "compressed folder" (a zip file) that uses AES encryption, though it can
+ /// read a zip file that uses "PKZIP encryption."
+ /// </para>
+ ///
+ /// <para>
+ /// The <see cref="ZipFile"/> class also has a <see cref="ZipFile.Password"/>
+ /// property. This property takes precedence over any password set on the
+ /// ZipFile itself. Typically, you would use the per-entry Password when most
+ /// entries in the zip archive use one password, and a few entries use a
+ /// different password. If all entries in the zip file use the same password,
+ /// then it is simpler to just set this property on the ZipFile itself,
+ /// whether creating a zip archive or extracting a zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// Some comments on updating archives: If you read a <c>ZipFile</c>, you
+ /// cannot modify the password on any encrypted entry, except by extracting
+ /// the entry with the original password (if any), removing the original entry
+ /// via <see cref="ZipFile.RemoveEntry(ZipEntry)"/>, and then adding a new
+ /// entry with a new Password.
+ /// </para>
+ ///
+ /// <para>
+ /// For example, suppose you read a <c>ZipFile</c>, and there is an encrypted
+ /// entry. Setting the Password property on that <c>ZipEntry</c> and then
+ /// calling <c>Save()</c> on the <c>ZipFile</c> does not update the password
+ /// on that entry in the archive. Neither is an exception thrown. Instead,
+ /// what happens during the <c>Save()</c> is the existing entry is copied
+ /// through to the new zip archive, in its original encrypted form. Upon
+ /// re-reading that archive, the entry can be decrypted with its original
+ /// password.
+ /// </para>
+ ///
+ /// <para>
+ /// If you read a ZipFile, and there is an un-encrypted entry, you can set the
+ /// <c>Password</c> on the entry and then call Save() on the ZipFile, and get
+ /// encryption on that entry.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// <para>
+ /// This example creates a zip file with two entries, and then extracts the
+ /// entries from the zip file. When creating the zip file, the two files are
+ /// added to the zip file using password protection. Each entry uses a
+ /// different password. During extraction, each file is extracted with the
+ /// appropriate password.
+ /// </para>
+ /// <code>
+ /// // create a file with encryption
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// ZipEntry entry;
+ /// entry= zip.AddFile("Declaration.txt");
+ /// entry.Password= "123456!";
+ /// entry = zip.AddFile("Report.xls");
+ /// entry.Password= "1Secret!";
+ /// zip.Save("EncryptedArchive.zip");
+ /// }
+ ///
+ /// // extract entries that use encryption
+ /// using (ZipFile zip = ZipFile.Read("EncryptedArchive.zip"))
+ /// {
+ /// ZipEntry entry;
+ /// entry = zip["Declaration.txt"];
+ /// entry.Password = "123456!";
+ /// entry.Extract("extractDir");
+ /// entry = zip["Report.xls"];
+ /// entry.Password = "1Secret!";
+ /// entry.Extract("extractDir");
+ /// }
+ ///
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As New ZipFile
+ /// Dim entry as ZipEntry
+ /// entry= zip.AddFile("Declaration.txt")
+ /// entry.Password= "123456!"
+ /// entry = zip.AddFile("Report.xls")
+ /// entry.Password= "1Secret!"
+ /// zip.Save("EncryptedArchive.zip")
+ /// End Using
+ ///
+ ///
+ /// ' extract entries that use encryption
+ /// Using (zip as ZipFile = ZipFile.Read("EncryptedArchive.zip"))
+ /// Dim entry as ZipEntry
+ /// entry = zip("Declaration.txt")
+ /// entry.Password = "123456!"
+ /// entry.Extract("extractDir")
+ /// entry = zip("Report.xls")
+ /// entry.Password = "1Secret!"
+ /// entry.Extract("extractDir")
+ /// End Using
+ ///
+ /// </code>
+ ///
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipEntry.Encryption"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.Password">ZipFile.Password</seealso>
+ public string Password
+ {
+ set
+ {
+ _Password = value;
+ if (_Password == null)
+ {
+ _Encryption = EncryptionAlgorithm.None;
+ }
+ else
+ {
+ // We're setting a non-null password.
+
+ // For entries obtained from a zip file that are encrypted, we cannot
+ // simply restream (recompress, re-encrypt) the file data, because we
+ // need the old password in order to decrypt the data, and then we
+ // need the new password to encrypt. So, setting the password is
+ // never going to work on an entry that is stored encrypted in a zipfile.
+
+ // But it is not en error to set the password, obviously: callers will
+ // set the password in order to Extract encrypted archives.
+
+ // If the source is a zip archive and there was previously no encryption
+ // on the entry, then we must re-stream the entry in order to encrypt it.
+ if (this._Source == ZipEntrySource.ZipFile && !_sourceIsEncrypted)
+ _restreamRequiredOnSave = true;
+
+ if (Encryption == EncryptionAlgorithm.None)
+ {
+ _Encryption = EncryptionAlgorithm.PkzipWeak;
+ }
+ }
+ }
+ private get { return _Password; }
+ }
+
+
+
+ internal bool IsChanged
+ {
+ get
+ {
+ return _restreamRequiredOnSave | _metadataChanged;
+ }
+ }
+
+
+ /// <summary>
+ /// The action the library should take when extracting a file that already exists.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This property affects the behavior of the Extract methods (one of the
+ /// <c>Extract()</c> or <c>ExtractWithPassword()</c> overloads), when
+ /// extraction would would overwrite an existing filesystem file. If you do
+ /// not set this property, the library throws an exception when extracting
+ /// an entry would overwrite an existing file.
+ /// </para>
+ ///
+ /// <para>
+ /// This property has no effect when extracting to a stream, or when the file to be
+ /// extracted does not already exist.
+ /// </para>
+ ///
+ /// </remarks>
+ /// <seealso cref="Ionic.Zip.ZipFile.ExtractExistingFile"/>
+ ///
+ /// <example>
+ /// This example shows how to set the <c>ExtractExistingFile</c> property in
+ /// an <c>ExtractProgress</c> event, in response to user input. The
+ /// <c>ExtractProgress</c> event is invoked if and only if the
+ /// <c>ExtractExistingFile</c> property was previously set to
+ /// <c>ExtractExistingFileAction.InvokeExtractProgressEvent</c>.
+ /// <code lang="C#">
+ /// internal static void ExtractProgress(object sender, ExtractProgressEventArgs e)
+ /// {
+ /// if (e.EventType == ZipProgressEventType.Extracting_BeforeExtractEntry)
+ /// Console.WriteLine("extract {0} ", e.CurrentEntry.FileName);
+ ///
+ /// else if (e.EventType == ZipProgressEventType.Extracting_ExtractEntryWouldOverwrite)
+ /// {
+ /// ZipEntry entry = e.CurrentEntry;
+ /// string response = null;
+ /// // Ask the user if he wants overwrite the file
+ /// do
+ /// {
+ /// Console.Write("Overwrite {0} in {1} ? (y/n/C) ", entry.FileName, e.ExtractLocation);
+ /// response = Console.ReadLine();
+ /// Console.WriteLine();
+ ///
+ /// } while (response != null && response[0]!='Y' &&
+ /// response[0]!='N' && response[0]!='C');
+ ///
+ /// if (response[0]=='C')
+ /// e.Cancel = true;
+ /// else if (response[0]=='Y')
+ /// entry.ExtractExistingFile = ExtractExistingFileAction.OverwriteSilently;
+ /// else
+ /// entry.ExtractExistingFile= ExtractExistingFileAction.DoNotOverwrite;
+ /// }
+ /// }
+ /// </code>
+ /// </example>
+ public ExtractExistingFileAction ExtractExistingFile
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// The action to take when an error is encountered while
+ /// opening or reading files as they are saved into a zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Errors can occur within a call to <see
+ /// cref="ZipFile.Save()">ZipFile.Save</see>, as the various files contained
+ /// in a ZipFile are being saved into the zip archive. During the
+ /// <c>Save</c>, DotNetZip will perform a <c>File.Open</c> on the file
+ /// associated to the ZipEntry, and then will read the entire contents of
+ /// the file as it is zipped. Either the open or the Read may fail, because
+ /// of lock conflicts or other reasons. Using this property, you can
+ /// specify the action to take when such errors occur.
+ /// </para>
+ ///
+ /// <para>
+ /// Typically you will NOT set this property on individual ZipEntry
+ /// instances. Instead, you will set the <see
+ /// cref="ZipFile.ZipErrorAction">ZipFile.ZipErrorAction</see> property on
+ /// the ZipFile instance, before adding any entries to the
+ /// <c>ZipFile</c>. If you do this, errors encountered on behalf of any of
+ /// the entries in the ZipFile will be handled the same way.
+ /// </para>
+ ///
+ /// <para>
+ /// But, if you use a <see cref="ZipFile.ZipError"/> handler, you will want
+ /// to set this property on the <c>ZipEntry</c> within the handler, to
+ /// communicate back to DotNetZip what you would like to do with the
+ /// particular error.
+ /// </para>
+ ///
+ /// </remarks>
+ /// <seealso cref="Ionic.Zip.ZipFile.ZipErrorAction"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.ZipError"/>
+ public ZipErrorAction ZipErrorAction
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// Indicates whether the entry was included in the most recent save.
+ /// </summary>
+ /// <remarks>
+ /// An entry can be excluded or skipped from a save if there is an error
+ /// opening or reading the entry.
+ /// </remarks>
+ /// <seealso cref="ZipErrorAction"/>
+ public bool IncludedInMostRecentSave
+ {
+ get
+ {
+ return !_skippedDuringSave;
+ }
+ }
+
+
+ /// <summary>
+ /// A callback that allows the application to specify the compression to use
+ /// for a given entry that is about to be added to the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// See <see cref="ZipFile.SetCompression" />
+ /// </para>
+ /// </remarks>
+ public SetCompressionCallback SetCompression
+ {
+ get;
+ set;
+ }
+
+
+
+ /// <summary>
+ /// Set to indicate whether to use UTF-8 encoding for filenames and comments.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// If this flag is set, the comment and filename for the entry will be
+ /// encoded with UTF-8, as described in <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">the Zip
+ /// specification</see>, if necessary. "Necessary" means, the filename or
+ /// entry comment (if any) cannot be reflexively encoded and decoded using the
+ /// default code page, IBM437.
+ /// </para>
+ ///
+ /// <para>
+ /// Setting this flag to true is equivalent to setting <see
+ /// cref="ProvisionalAlternateEncoding"/> to <c>System.Text.Encoding.UTF8</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// This flag has no effect or relation to the text encoding used within the
+ /// file itself.
+ /// </para>
+ ///
+ /// </remarks>
+ [Obsolete("Beginning with v1.9.1.6 of DotNetZip, this property is obsolete. It will be removed in a future version of the library. Your applications should use AlternateEncoding and AlternateEncodingUsage instead.")]
+ public bool UseUnicodeAsNecessary
+ {
+ get
+ {
+ return (AlternateEncoding == System.Text.Encoding.GetEncoding("UTF-8")) &&
+ (AlternateEncodingUsage == ZipOption.AsNecessary);
+ }
+ set
+ {
+ if (value)
+ {
+ AlternateEncoding = System.Text.Encoding.GetEncoding("UTF-8");
+ AlternateEncodingUsage = ZipOption.AsNecessary;
+
+ }
+ else
+ {
+ AlternateEncoding = Ionic.Zip.ZipFile.DefaultEncoding;
+ AlternateEncodingUsage = ZipOption.Never;
+ }
+ }
+ }
+
+ /// <summary>
+ /// The text encoding to use for the FileName and Comment on this ZipEntry,
+ /// when the default encoding is insufficient.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// Don't use this property. See <see cref='AlternateEncoding'/>.
+ /// </para>
+ ///
+ /// </remarks>
+ [Obsolete("This property is obsolete since v1.9.1.6. Use AlternateEncoding and AlternateEncodingUsage instead.", true)]
+ public System.Text.Encoding ProvisionalAlternateEncoding
+ {
+ get; set;
+ }
+
+ /// <summary>
+ /// Specifies the alternate text encoding used by this ZipEntry
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// The default text encoding used in Zip files for encoding filenames and
+ /// comments is IBM437, which is something like a superset of ASCII. In
+ /// cases where this is insufficient, applications can specify an
+ /// alternate encoding.
+ /// </para>
+ /// <para>
+ /// When creating a zip file, the usage of the alternate encoding is
+ /// governed by the <see cref="AlternateEncodingUsage"/> property.
+ /// Typically you would set both properties to tell DotNetZip to employ an
+ /// encoding that is not IBM437 in the zipfile you are creating.
+ /// </para>
+ /// <para>
+ /// Keep in mind that because the ZIP specification states that the only
+ /// valid encodings to use are IBM437 and UTF-8, if you use something
+ /// other than that, then zip tools and libraries may not be able to
+ /// successfully read the zip archive you generate.
+ /// </para>
+ /// <para>
+ /// The zip specification states that applications should presume that
+ /// IBM437 is in use, except when a special bit is set, which indicates
+ /// UTF-8. There is no way to specify an arbitrary code page, within the
+ /// zip file itself. When you create a zip file encoded with gb2312 or
+ /// ibm861 or anything other than IBM437 or UTF-8, then the application
+ /// that reads the zip file needs to "know" which code page to use. In
+ /// some cases, the code page used when reading is chosen implicitly. For
+ /// example, WinRar uses the ambient code page for the host desktop
+ /// operating system. The pitfall here is that if you create a zip in
+ /// Copenhagen and send it to Tokyo, the reader of the zipfile may not be
+ /// able to decode successfully.
+ /// </para>
+ /// </remarks>
+ /// <example>
+ /// This example shows how to create a zipfile encoded with a
+ /// language-specific encoding:
+ /// <code>
+ /// using (var zip = new ZipFile())
+ /// {
+ /// zip.AlternateEnoding = System.Text.Encoding.GetEncoding("ibm861");
+ /// zip.AlternateEnodingUsage = ZipOption.Always;
+ /// zip.AddFileS(arrayOfFiles);
+ /// zip.Save("Myarchive-Encoded-in-IBM861.zip");
+ /// }
+ /// </code>
+ /// </example>
+ /// <seealso cref="ZipFile.AlternateEncodingUsage" />
+ public System.Text.Encoding AlternateEncoding
+ {
+ get; set;
+ }
+
+
+ /// <summary>
+ /// Describes if and when this instance should apply
+ /// AlternateEncoding to encode the FileName and Comment, when
+ /// saving.
+ /// </summary>
+ /// <seealso cref="ZipFile.AlternateEncoding" />
+ public ZipOption AlternateEncodingUsage
+ {
+ get; set;
+ }
+
+
+ // /// <summary>
+ // /// The text encoding actually used for this ZipEntry.
+ // /// </summary>
+ // ///
+ // /// <remarks>
+ // ///
+ // /// <para>
+ // /// This read-only property describes the encoding used by the
+ // /// <c>ZipEntry</c>. If the entry has been read in from an existing ZipFile,
+ // /// then it may take the value UTF-8, if the entry is coded to specify UTF-8.
+ // /// If the entry does not specify UTF-8, the typical case, then the encoding
+ // /// used is whatever the application specified in the call to
+ // /// <c>ZipFile.Read()</c>. If the application has used one of the overloads of
+ // /// <c>ZipFile.Read()</c> that does not accept an encoding parameter, then the
+ // /// encoding used is IBM437, which is the default encoding described in the
+ // /// ZIP specification. </para>
+ // ///
+ // /// <para>
+ // /// If the entry is being created, then the value of ActualEncoding is taken
+ // /// according to the logic described in the documentation for <see
+ // /// cref="ZipFile.ProvisionalAlternateEncoding" />. </para>
+ // ///
+ // /// <para>
+ // /// An application might be interested in retrieving this property to see if
+ // /// an entry read in from a file has used Unicode (UTF-8). </para>
+ // ///
+ // /// </remarks>
+ // ///
+ // /// <seealso cref="ZipFile.ProvisionalAlternateEncoding" />
+ // public System.Text.Encoding ActualEncoding
+ // {
+ // get
+ // {
+ // return _actualEncoding;
+ // }
+ // }
+
+
+
+
+ internal static string NameInArchive(String filename, string directoryPathInArchive)
+ {
+ string result = null;
+ if (directoryPathInArchive == null)
+ result = filename;
+
+ else
+ {
+ if (String.IsNullOrEmpty(directoryPathInArchive))
+ {
+ result = Path.GetFileName(filename);
+ }
+ else
+ {
+ // explicitly specify a pathname for this file
+ result = Path.Combine(directoryPathInArchive, Path.GetFileName(filename));
+ }
+ }
+
+ //result = Path.GetFullPath(result);
+ result = SharedUtilities.NormalizePathForUseInZipFile(result);
+
+ return result;
+ }
+
+ // workitem 9073
+ internal static ZipEntry CreateFromNothing(String nameInArchive)
+ {
+ return Create(nameInArchive, ZipEntrySource.None, null, null);
+ }
+
+ internal static ZipEntry CreateFromFile(String filename, string nameInArchive)
+ {
+ return Create(nameInArchive, ZipEntrySource.FileSystem, filename, null);
+ }
+
+ internal static ZipEntry CreateForStream(String entryName, Stream s)
+ {
+ return Create(entryName, ZipEntrySource.Stream, s, null);
+ }
+
+ internal static ZipEntry CreateForWriter(String entryName, WriteDelegate d)
+ {
+ return Create(entryName, ZipEntrySource.WriteDelegate, d, null);
+ }
+
+ internal static ZipEntry CreateForJitStreamProvider(string nameInArchive, OpenDelegate opener, CloseDelegate closer)
+ {
+ return Create(nameInArchive, ZipEntrySource.JitStream, opener, closer);
+ }
+
+ internal static ZipEntry CreateForZipOutputStream(string nameInArchive)
+ {
+ return Create(nameInArchive, ZipEntrySource.ZipOutputStream, null, null);
+ }
+
+
+ private static ZipEntry Create(string nameInArchive, ZipEntrySource source, Object arg1, Object arg2)
+ {
+ if (String.IsNullOrEmpty(nameInArchive))
+ throw new Ionic.Zip.ZipException("The entry name must be non-null and non-empty.");
+
+ ZipEntry entry = new ZipEntry();
+
+ // workitem 7071
+ // workitem 7926 - "version made by" OS should be zero for compat with WinZip
+ entry._VersionMadeBy = (0 << 8) + 45; // indicates the attributes are FAT Attributes, and v4.5 of the spec
+ entry._Source = source;
+ entry._Mtime = entry._Atime = entry._Ctime = DateTime.UtcNow;
+
+ if (source == ZipEntrySource.Stream)
+ {
+ entry._sourceStream = (arg1 as Stream); // may or may not be null
+ }
+ else if (source == ZipEntrySource.WriteDelegate)
+ {
+ entry._WriteDelegate = (arg1 as WriteDelegate); // may or may not be null
+ }
+ else if (source == ZipEntrySource.JitStream)
+ {
+ entry._OpenDelegate = (arg1 as OpenDelegate); // may or may not be null
+ entry._CloseDelegate = (arg2 as CloseDelegate); // may or may not be null
+ }
+ else if (source == ZipEntrySource.ZipOutputStream)
+ {
+ }
+ // workitem 9073
+ else if (source == ZipEntrySource.None)
+ {
+ // make this a valid value, for later.
+ entry._Source = ZipEntrySource.FileSystem;
+ }
+ else
+ {
+ String filename = (arg1 as String); // must not be null
+
+ if (String.IsNullOrEmpty(filename))
+ throw new Ionic.Zip.ZipException("The filename must be non-null and non-empty.");
+
+ try
+ {
+ // The named file may or may not exist at this time. For
+ // example, when adding a directory by name. We test existence
+ // when necessary: when saving the ZipFile, or when getting the
+ // attributes, and so on.
+
+#if NETCF
+ // workitem 6878
+ // Ionic.Zip.SharedUtilities.AdjustTime_Win32ToDotNet
+ entry._Mtime = File.GetLastWriteTime(filename).ToUniversalTime();
+ entry._Ctime = File.GetCreationTime(filename).ToUniversalTime();
+ entry._Atime = File.GetLastAccessTime(filename).ToUniversalTime();
+
+ // workitem 7071
+ // can only get attributes of files that exist.
+ if (File.Exists(filename) || Directory.Exists(filename))
+ entry._ExternalFileAttrs = (int)NetCfFile.GetAttributes(filename);
+
+#elif SILVERLIGHT
+ entry._Mtime =
+ entry._Ctime =
+ entry._Atime = System.DateTime.UtcNow;
+ entry._ExternalFileAttrs = (int)0;
+#else
+ // workitem 6878??
+ entry._Mtime = File.GetLastWriteTime(filename).ToUniversalTime();
+ entry._Ctime = File.GetCreationTime(filename).ToUniversalTime();
+ entry._Atime = File.GetLastAccessTime(filename).ToUniversalTime();
+
+ // workitem 7071
+ // can only get attributes on files that exist.
+ if (File.Exists(filename) || Directory.Exists(filename))
+ entry._ExternalFileAttrs = (int)File.GetAttributes(filename);
+
+#endif
+ entry._ntfsTimesAreSet = true;
+
+ entry._LocalFileName = Path.GetFullPath(filename); // workitem 8813
+
+ }
+ catch (System.IO.PathTooLongException ptle)
+ {
+ // workitem 14035
+ var msg = String.Format("The path is too long, filename={0}",
+ filename);
+ throw new ZipException(msg, ptle);
+ }
+
+ }
+
+ entry._LastModified = entry._Mtime;
+ entry._FileNameInArchive = SharedUtilities.NormalizePathForUseInZipFile(nameInArchive);
+ // We don't actually slurp in the file data until the caller invokes Write on this entry.
+
+ return entry;
+ }
+
+
+
+
+ internal void MarkAsDirectory()
+ {
+ _IsDirectory = true;
+ // workitem 6279
+ if (!_FileNameInArchive.EndsWith("/"))
+ _FileNameInArchive += "/";
+ }
+
+
+
+ /// <summary>
+ /// Indicates whether an entry is marked as a text file. Be careful when
+ /// using on this property. Unless you have a good reason, you should
+ /// probably ignore this property.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The ZIP format includes a provision for specifying whether an entry in
+ /// the zip archive is a text or binary file. This property exposes that
+ /// metadata item. Be careful when using this property: It's not clear
+ /// that this property as a firm meaning, across tools and libraries.
+ /// </para>
+ ///
+ /// <para>
+ /// To be clear, when reading a zip file, the property value may or may
+ /// not be set, and its value may or may not be valid. Not all entries
+ /// that you may think of as "text" entries will be so marked, and entries
+ /// marked as "text" are not guaranteed in any way to be text entries.
+ /// Whether the value is set and set correctly depends entirely on the
+ /// application that produced the zip file.
+ /// </para>
+ ///
+ /// <para>
+ /// There are many zip tools available, and when creating zip files, some
+ /// of them "respect" the IsText metadata field, and some of them do not.
+ /// Unfortunately, even when an application tries to do "the right thing",
+ /// it's not always clear what "the right thing" is.
+ /// </para>
+ ///
+ /// <para>
+ /// There's no firm definition of just what it means to be "a text file",
+ /// and the zip specification does not help in this regard. Twenty years
+ /// ago, text was ASCII, each byte was less than 127. IsText meant, all
+ /// bytes in the file were less than 127. These days, it is not the case
+ /// that all text files have all bytes less than 127. Any unicode file
+ /// may have bytes that are above 0x7f. The zip specification has nothing
+ /// to say on this topic. Therefore, it's not clear what IsText really
+ /// means.
+ /// </para>
+ ///
+ /// <para>
+ /// This property merely tells a reading application what is stored in the
+ /// metadata for an entry, without guaranteeing its validity or its
+ /// meaning.
+ /// </para>
+ ///
+ /// <para>
+ /// When DotNetZip is used to create a zipfile, it attempts to set this
+ /// field "correctly." For example, if a file ends in ".txt", this field
+ /// will be set. Your application may override that default setting. When
+ /// writing a zip file, you must set the property before calling
+ /// <c>Save()</c> on the ZipFile.
+ /// </para>
+ ///
+ /// <para>
+ /// When reading a zip file, a more general way to decide just what kind
+ /// of file is contained in a particular entry is to use the file type
+ /// database stored in the operating system. The operating system stores
+ /// a table that says, a file with .jpg extension is a JPG image file, a
+ /// file with a .xml extension is an XML document, a file with a .txt is a
+ /// pure ASCII text document, and so on. To get this information on
+ /// Windows, <see
+ /// href="http://www.codeproject.com/KB/cs/GetFileTypeAndIcon.aspx"> you
+ /// need to read and parse the registry.</see> </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// <code>
+ /// using (var zip = new ZipFile())
+ /// {
+ /// var e = zip.UpdateFile("Descriptions.mme", "");
+ /// e.IsText = true;
+ /// zip.Save(zipPath);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As New ZipFile
+ /// Dim e2 as ZipEntry = zip.AddFile("Descriptions.mme", "")
+ /// e.IsText= True
+ /// zip.Save(zipPath)
+ /// End Using
+ /// </code>
+ /// </example>
+ public bool IsText
+ {
+ // workitem 7801
+ get { return _IsText; }
+ set { _IsText = value; }
+ }
+
+
+
+ /// <summary>Provides a string representation of the instance.</summary>
+ /// <returns>a string representation of the instance.</returns>
+ public override String ToString()
+ {
+ return String.Format("ZipEntry::{0}", FileName);
+ }
+
+
+ internal Stream ArchiveStream
+ {
+ get
+ {
+ if (_archiveStream == null)
+ {
+ if (_container.ZipFile != null)
+ {
+ var zf = _container.ZipFile;
+ zf.Reset(false);
+ _archiveStream = zf.StreamForDiskNumber(_diskNumber);
+ }
+ else
+ {
+ _archiveStream = _container.ZipOutputStream.OutputStream;
+ }
+ }
+ return _archiveStream;
+ }
+ }
+
+
+ private void SetFdpLoh()
+ {
+ // The value for FileDataPosition has not yet been set.
+ // Therefore, seek to the local header, and figure the start of file data.
+ // workitem 8098: ok (restore)
+ long origPosition = this.ArchiveStream.Position;
+ try
+ {
+ this.ArchiveStream.Seek(this._RelativeOffsetOfLocalHeader, SeekOrigin.Begin);
+
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(this.ArchiveStream);
+ }
+ catch (System.IO.IOException exc1)
+ {
+ string description = String.Format("Exception seeking entry({0}) offset(0x{1:X8}) len(0x{2:X8})",
+ this.FileName, this._RelativeOffsetOfLocalHeader,
+ this.ArchiveStream.Length);
+ throw new BadStateException(description, exc1);
+ }
+
+ byte[] block = new byte[30];
+ this.ArchiveStream.Read(block, 0, block.Length);
+
+ // At this point we could verify the contents read from the local header
+ // with the contents read from the central header. We could, but don't need to.
+ // So we won't.
+
+ Int16 filenameLength = (short)(block[26] + block[27] * 256);
+ Int16 extraFieldLength = (short)(block[28] + block[29] * 256);
+
+ // Console.WriteLine(" pos 0x{0:X8} ({0})", this.ArchiveStream.Position);
+ // Console.WriteLine(" seek 0x{0:X8} ({0})", filenameLength + extraFieldLength);
+
+ this.ArchiveStream.Seek(filenameLength + extraFieldLength, SeekOrigin.Current);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(this.ArchiveStream);
+
+ this._LengthOfHeader = 30 + extraFieldLength + filenameLength +
+ GetLengthOfCryptoHeaderBytes(_Encryption_FromZipFile);
+
+ // Console.WriteLine(" ROLH 0x{0:X8} ({0})", _RelativeOffsetOfLocalHeader);
+ // Console.WriteLine(" LOH 0x{0:X8} ({0})", _LengthOfHeader);
+ // workitem 8098: ok (arithmetic)
+ this.__FileDataPosition = _RelativeOffsetOfLocalHeader + _LengthOfHeader;
+ // Console.WriteLine(" FDP 0x{0:X8} ({0})", __FileDataPosition);
+
+ // restore file position:
+ // workitem 8098: ok (restore)
+ this.ArchiveStream.Seek(origPosition, SeekOrigin.Begin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(this.ArchiveStream);
+ }
+
+
+
+#if AESCRYPTO
+ private static int GetKeyStrengthInBits(EncryptionAlgorithm a)
+ {
+ if (a == EncryptionAlgorithm.WinZipAes256) return 256;
+ else if (a == EncryptionAlgorithm.WinZipAes128) return 128;
+ return -1;
+ }
+#endif
+
+ internal static int GetLengthOfCryptoHeaderBytes(EncryptionAlgorithm a)
+ {
+ //if ((_BitField & 0x01) != 0x01) return 0;
+ if (a == EncryptionAlgorithm.None) return 0;
+
+#if AESCRYPTO
+ if (a == EncryptionAlgorithm.WinZipAes128 ||
+ a == EncryptionAlgorithm.WinZipAes256)
+ {
+ int KeyStrengthInBits = GetKeyStrengthInBits(a);
+ int sizeOfSaltAndPv = ((KeyStrengthInBits / 8 / 2) + 2);
+ return sizeOfSaltAndPv;
+ }
+#endif
+ if (a == EncryptionAlgorithm.PkzipWeak)
+ return 12;
+ throw new ZipException("internal error");
+ }
+
+
+ internal long FileDataPosition
+ {
+ get
+ {
+ if (__FileDataPosition == -1)
+ SetFdpLoh();
+
+ return __FileDataPosition;
+ }
+ }
+
+ private int LengthOfHeader
+ {
+ get
+ {
+ if (_LengthOfHeader == 0)
+ SetFdpLoh();
+
+ return _LengthOfHeader;
+ }
+ }
+
+
+
+ private ZipCrypto _zipCrypto_forExtract;
+ private ZipCrypto _zipCrypto_forWrite;
+#if AESCRYPTO
+ private WinZipAesCrypto _aesCrypto_forExtract;
+ private WinZipAesCrypto _aesCrypto_forWrite;
+ private Int16 _WinZipAesMethod;
+#endif
+
+ internal DateTime _LastModified;
+ private DateTime _Mtime, _Atime, _Ctime; // workitem 6878: NTFS quantities
+ private bool _ntfsTimesAreSet;
+ private bool _emitNtfsTimes = true;
+ private bool _emitUnixTimes; // by default, false
+ private bool _TrimVolumeFromFullyQualifiedPaths = true; // by default, trim them.
+ internal string _LocalFileName;
+ private string _FileNameInArchive;
+ internal Int16 _VersionNeeded;
+ internal Int16 _BitField;
+ internal Int16 _CompressionMethod;
+ private Int16 _CompressionMethod_FromZipFile;
+ private Ionic.Zlib.CompressionLevel _CompressionLevel;
+ internal string _Comment;
+ private bool _IsDirectory;
+ private byte[] _CommentBytes;
+ internal Int64 _CompressedSize;
+ internal Int64 _CompressedFileDataSize; // CompressedSize less 12 bytes for the encryption header, if any
+ internal Int64 _UncompressedSize;
+ internal Int32 _TimeBlob;
+ private bool _crcCalculated;
+ internal Int32 _Crc32;
+ internal byte[] _Extra;
+ private bool _metadataChanged;
+ private bool _restreamRequiredOnSave;
+ private bool _sourceIsEncrypted;
+ private bool _skippedDuringSave;
+ private UInt32 _diskNumber;
+
+ private static System.Text.Encoding ibm437 = System.Text.Encoding.GetEncoding("IBM437");
+ //private System.Text.Encoding _provisionalAlternateEncoding = System.Text.Encoding.GetEncoding("IBM437");
+ private System.Text.Encoding _actualEncoding;
+
+ internal ZipContainer _container;
+
+ private long __FileDataPosition = -1;
+ private byte[] _EntryHeader;
+ internal Int64 _RelativeOffsetOfLocalHeader;
+ private Int64 _future_ROLH;
+ private Int64 _TotalEntrySize;
+ private int _LengthOfHeader;
+ private int _LengthOfTrailer;
+ internal bool _InputUsesZip64;
+ private UInt32 _UnsupportedAlgorithmId;
+
+ internal string _Password;
+ internal ZipEntrySource _Source;
+ internal EncryptionAlgorithm _Encryption;
+ internal EncryptionAlgorithm _Encryption_FromZipFile;
+ internal byte[] _WeakEncryptionHeader;
+ internal Stream _archiveStream;
+ private Stream _sourceStream;
+ private Nullable<Int64> _sourceStreamOriginalPosition;
+ private bool _sourceWasJitProvided;
+ private bool _ioOperationCanceled;
+ private bool _presumeZip64;
+ private Nullable<bool> _entryRequiresZip64;
+ private Nullable<bool> _OutputUsesZip64;
+ private bool _IsText; // workitem 7801
+ private ZipEntryTimestamp _timestamp;
+
+ private static System.DateTime _unixEpoch = new System.DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+ private static System.DateTime _win32Epoch = System.DateTime.FromFileTimeUtc(0L);
+ private static System.DateTime _zeroHour = new System.DateTime(1, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+
+ private WriteDelegate _WriteDelegate;
+ private OpenDelegate _OpenDelegate;
+ private CloseDelegate _CloseDelegate;
+
+
+ // summary
+ // The default size of the IO buffer for ZipEntry instances. Currently it is 8192 bytes.
+ // summary
+ //public const int IO_BUFFER_SIZE_DEFAULT = 8192; // 0x8000; // 0x4400
+
+ }
+
+
+
+ /// <summary>
+ /// An enum that specifies the type of timestamp available on the ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// The last modified time of a file can be stored in multiple ways in
+ /// a zip file, and they are not mutually exclusive:
+ /// </para>
+ ///
+ /// <list type="bullet">
+ /// <item>
+ /// In the so-called "DOS" format, which has a 2-second precision. Values
+ /// are rounded to the nearest even second. For example, if the time on the
+ /// file is 12:34:43, then it will be stored as 12:34:44. This first value
+ /// is accessible via the <c>LastModified</c> property. This value is always
+ /// present in the metadata for each zip entry. In some cases the value is
+ /// invalid, or zero.
+ /// </item>
+ ///
+ /// <item>
+ /// In the so-called "Windows" or "NTFS" format, as an 8-byte integer
+ /// quantity expressed as the number of 1/10 milliseconds (in other words
+ /// the number of 100 nanosecond units) since January 1, 1601 (UTC). This
+ /// format is how Windows represents file times. This time is accessible
+ /// via the <c>ModifiedTime</c> property.
+ /// </item>
+ ///
+ /// <item>
+ /// In the "Unix" format, a 4-byte quantity specifying the number of seconds since
+ /// January 1, 1970 UTC.
+ /// </item>
+ ///
+ /// <item>
+ /// In an older format, now deprecated but still used by some current
+ /// tools. This format is also a 4-byte quantity specifying the number of
+ /// seconds since January 1, 1970 UTC.
+ /// </item>
+ ///
+ /// </list>
+ ///
+ /// <para>
+ /// This bit field describes which of the formats were found in a <c>ZipEntry</c> that was read.
+ /// </para>
+ ///
+ /// </remarks>
+ [Flags]
+ internal enum ZipEntryTimestamp
+ {
+ /// <summary>
+ /// Default value.
+ /// </summary>
+ None = 0,
+
+ /// <summary>
+ /// A DOS timestamp with 2-second precision.
+ /// </summary>
+ DOS = 1,
+
+ /// <summary>
+ /// A Windows timestamp with 100-ns precision.
+ /// </summary>
+ Windows = 2,
+
+ /// <summary>
+ /// A Unix timestamp with 1-second precision.
+ /// </summary>
+ Unix = 4,
+
+ /// <summary>
+ /// A Unix timestamp with 1-second precision, stored in InfoZip v1 format. This
+ /// format is outdated and is supported for reading archives only.
+ /// </summary>
+ InfoZip1 = 8,
+ }
+
+
+
+ /// <summary>
+ /// The method of compression to use for a particular ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">PKWare's
+ /// ZIP Specification</see> describes a number of distinct
+ /// cmopression methods that can be used within a zip
+ /// file. DotNetZip supports a subset of them.
+ /// </remarks>
+ internal enum CompressionMethod
+ {
+ /// <summary>
+ /// No compression at all. For COM environments, the value is 0 (zero).
+ /// </summary>
+ None = 0,
+
+ /// <summary>
+ /// DEFLATE compression, as described in <see
+ /// href="http://www.ietf.org/rfc/rfc1951.txt">IETF RFC
+ /// 1951</see>. This is the "normal" compression used in zip
+ /// files. For COM environments, the value is 8.
+ /// </summary>
+ Deflate = 8,
+
+#if BZIP
+ /// <summary>
+ /// BZip2 compression, a compression algorithm developed by Julian Seward.
+ /// For COM environments, the value is 12.
+ /// </summary>
+ BZip2 = 12,
+#endif
+ }
+
+
+#if NETCF
+ internal class NetCfFile
+ {
+ internal static int SetTimes(string filename, DateTime ctime, DateTime atime, DateTime mtime)
+ {
+ IntPtr hFile = (IntPtr) CreateFileCE(filename,
+ (uint)0x40000000L, // (uint)FileAccess.Write,
+ (uint)0x00000002L, // (uint)FileShare.Write,
+ 0,
+ (uint) 3, // == open existing
+ (uint)0, // flagsAndAttributes
+ 0);
+
+ if((int)hFile == -1)
+ {
+ // workitem 7944: don't throw on failure to set file times
+ // throw new ZipException("CreateFileCE Failed");
+ return Interop.Marshal.GetLastWin32Error();
+ }
+
+ SetFileTime(hFile,
+ BitConverter.GetBytes(ctime.ToFileTime()),
+ BitConverter.GetBytes(atime.ToFileTime()),
+ BitConverter.GetBytes(mtime.ToFileTime()));
+
+ CloseHandle(hFile);
+ return 0;
+ }
+
+
+ internal static int SetLastWriteTime(string filename, DateTime mtime)
+ {
+ IntPtr hFile = (IntPtr) CreateFileCE(filename,
+ (uint)0x40000000L, // (uint)FileAccess.Write,
+ (uint)0x00000002L, // (uint)FileShare.Write,
+ 0,
+ (uint) 3, // == open existing
+ (uint)0, // flagsAndAttributes
+ 0);
+
+ if((int)hFile == -1)
+ {
+ // workitem 7944: don't throw on failure to set file time
+ // throw new ZipException(String.Format("CreateFileCE Failed ({0})",
+ // Interop.Marshal.GetLastWin32Error()));
+ return Interop.Marshal.GetLastWin32Error();
+ }
+
+ SetFileTime(hFile, null, null,
+ BitConverter.GetBytes(mtime.ToFileTime()));
+
+ CloseHandle(hFile);
+ return 0;
+ }
+
+
+ [Interop.DllImport("coredll.dll", EntryPoint="CreateFile", SetLastError=true)]
+ internal static extern int CreateFileCE(string lpFileName,
+ uint dwDesiredAccess,
+ uint dwShareMode,
+ int lpSecurityAttributes,
+ uint dwCreationDisposition,
+ uint dwFlagsAndAttributes,
+ int hTemplateFile);
+
+
+ [Interop.DllImport("coredll", EntryPoint="GetFileAttributes", SetLastError=true)]
+ internal static extern uint GetAttributes(string lpFileName);
+
+ [Interop.DllImport("coredll", EntryPoint="SetFileAttributes", SetLastError=true)]
+ internal static extern bool SetAttributes(string lpFileName, uint dwFileAttributes);
+
+ [Interop.DllImport("coredll", EntryPoint="SetFileTime", SetLastError=true)]
+ internal static extern bool SetFileTime(IntPtr hFile, byte[] lpCreationTime, byte[] lpLastAccessTime, byte[] lpLastWriteTime);
+
+ [Interop.DllImport("coredll.dll", SetLastError=true)]
+ internal static extern bool CloseHandle(IntPtr hObject);
+
+ }
+#endif
+
+
+
+}
--- /dev/null
+// ZipEntrySource.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2009-November-19 11:18:42>
+//
+// ------------------------------------------------------------------
+//
+
+namespace Ionic.Zip
+{
+ /// <summary>
+ /// An enum that specifies the source of the ZipEntry.
+ /// </summary>
+ internal enum ZipEntrySource
+ {
+ /// <summary>
+ /// Default value. Invalid on a bonafide ZipEntry.
+ /// </summary>
+ None = 0,
+
+ /// <summary>
+ /// The entry was instantiated by calling AddFile() or another method that
+ /// added an entry from the filesystem.
+ /// </summary>
+ FileSystem,
+
+ /// <summary>
+ /// The entry was instantiated via <see cref="Ionic.Zip.ZipFile.AddEntry(string,string)"/> or
+ /// <see cref="Ionic.Zip.ZipFile.AddEntry(string,System.IO.Stream)"/> .
+ /// </summary>
+ Stream,
+
+ /// <summary>
+ /// The ZipEntry was instantiated by reading a zipfile.
+ /// </summary>
+ ZipFile,
+
+ /// <summary>
+ /// The content for the ZipEntry will be or was provided by the WriteDelegate.
+ /// </summary>
+ WriteDelegate,
+
+ /// <summary>
+ /// The content for the ZipEntry will be obtained from the stream dispensed by the <c>OpenDelegate</c>.
+ /// The entry was instantiated via <see cref="Ionic.Zip.ZipFile.AddEntry(string,OpenDelegate,CloseDelegate)"/>.
+ /// </summary>
+ JitStream,
+
+ /// <summary>
+ /// The content for the ZipEntry will be or was obtained from a <c>ZipOutputStream</c>.
+ /// </summary>
+ ZipOutputStream,
+ }
+
+}
\ No newline at end of file
--- /dev/null
+// ZipErrorAction.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2009-September-01 18:43:20>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the ZipErrorAction enum, which provides
+// an action to take when errors occur when opening or reading
+// files to be added to a zip file.
+//
+// ------------------------------------------------------------------
+
+
+namespace Ionic.Zip
+{
+ /// <summary>
+ /// An enum providing the options when an error occurs during opening or reading
+ /// of a file or directory that is being saved to a zip file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This enum describes the actions that the library can take when an error occurs
+ /// opening or reading a file, as it is being saved into a Zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// In some cases an error will occur when DotNetZip tries to open a file to be
+ /// added to the zip archive. In other cases, an error might occur after the
+ /// file has been successfully opened, while DotNetZip is reading the file.
+ /// </para>
+ ///
+ /// <para>
+ /// The first problem might occur when calling AddDirectory() on a directory
+ /// that contains a Clipper .dbf file; the file is locked by Clipper and
+ /// cannot be opened by another process. An example of the second problem is
+ /// the ERROR_LOCK_VIOLATION that results when a file is opened by another
+ /// process, but not locked, and a range lock has been taken on the file.
+ /// Microsoft Outlook takes range locks on .PST files.
+ /// </para>
+ /// </remarks>
+ internal enum ZipErrorAction
+ {
+ /// <summary>
+ /// Throw an exception when an error occurs while zipping. This is the default
+ /// behavior. (For COM clients, this is a 0 (zero).)
+ /// </summary>
+ Throw,
+
+ /// <summary>
+ /// When an error occurs during zipping, for example a file cannot be opened,
+ /// skip the file causing the error, and continue zipping. (For COM clients,
+ /// this is a 1.)
+ /// </summary>
+ Skip,
+
+ /// <summary>
+ /// When an error occurs during zipping, for example a file cannot be opened,
+ /// retry the operation that caused the error. Be careful with this option. If
+ /// the error is not temporary, the library will retry forever. (For COM
+ /// clients, this is a 2.)
+ /// </summary>
+ Retry,
+
+ /// <summary>
+ /// When an error occurs, invoke the zipError event. The event type used is
+ /// <see cref="ZipProgressEventType.Error_Saving"/>. A typical use of this option:
+ /// a GUI application may wish to pop up a dialog to allow the user to view the
+ /// error that occurred, and choose an appropriate action. After your
+ /// processing in the error event, if you want to skip the file, set <see
+ /// cref="ZipEntry.ZipErrorAction"/> on the
+ /// <c>ZipProgressEventArgs.CurrentEntry</c> to <c>Skip</c>. If you want the
+ /// exception to be thrown, set <c>ZipErrorAction</c> on the <c>CurrentEntry</c>
+ /// to <c>Throw</c>. If you want to cancel the zip, set
+ /// <c>ZipProgressEventArgs.Cancel</c> to true. Cancelling differs from using
+ /// Skip in that a cancel will not save any further entries, if there are any.
+ /// (For COM clients, the value of this enum is a 3.)
+ /// </summary>
+ InvokeErrorEvent,
+ }
+
+}
--- /dev/null
+// ZipFile.AddUpdate.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009-2011 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-November-01 13:56:58>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the methods for Adding and Updating entries in
+// the ZipFile.
+//
+// ------------------------------------------------------------------
+//
+
+
+using System;
+using System.IO;
+using System.Collections.Generic;
+
+namespace Ionic.Zip
+{
+ internal partial class ZipFile
+ {
+ /// <summary>
+ /// Adds an item, either a file or a directory, to a zip file archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method is handy if you are adding things to zip archive and don't
+ /// want to bother distinguishing between directories or files. Any files are
+ /// added as single entries. A directory added through this method is added
+ /// recursively: all files and subdirectories contained within the directory
+ /// are added to the <c>ZipFile</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// The name of the item may be a relative path or a fully-qualified
+ /// path. Remember, the items contained in <c>ZipFile</c> instance get written
+ /// to the disk only when you call <see cref="ZipFile.Save()"/> or a similar
+ /// save method.
+ /// </para>
+ ///
+ /// <para>
+ /// The directory name used for the file within the archive is the same
+ /// as the directory name (potentially a relative path) specified in the
+ /// <paramref name="fileOrDirectoryName"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to the
+ /// <c>ZipEntry</c> added.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddFile(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddDirectory(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateItem(string)"/>
+ ///
+ /// <overloads>This method has two overloads.</overloads>
+ /// <param name="fileOrDirectoryName">
+ /// the name of the file or directory to add.</param>
+ ///
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ public ZipEntry AddItem(string fileOrDirectoryName)
+ {
+ return AddItem(fileOrDirectoryName, null);
+ }
+
+
+ /// <summary>
+ /// Adds an item, either a file or a directory, to a zip file archive,
+ /// explicitly specifying the directory path to be used in the archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// If adding a directory, the add is recursive on all files and
+ /// subdirectories contained within it.
+ /// </para>
+ /// <para>
+ /// The name of the item may be a relative path or a fully-qualified path.
+ /// The item added by this call to the <c>ZipFile</c> is not read from the
+ /// disk nor written to the zip file archive until the application calls
+ /// Save() on the <c>ZipFile</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// This version of the method allows the caller to explicitly specify the
+ /// directory path to be used in the archive, which would override the
+ /// "natural" path of the filesystem file.
+ /// </para>
+ ///
+ /// <para>
+ /// Encryption will be used on the file data if the <c>Password</c> has
+ /// been set on the <c>ZipFile</c> object, prior to calling this method.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to the
+ /// <c>ZipEntry</c> added.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <exception cref="System.IO.FileNotFoundException">
+ /// Thrown if the file or directory passed in does not exist.
+ /// </exception>
+ ///
+ /// <param name="fileOrDirectoryName">the name of the file or directory to add.
+ /// </param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// The name of the directory path to use within the zip archive. This path
+ /// need not refer to an extant directory in the current filesystem. If the
+ /// files within the zip are later extracted, this is the path used for the
+ /// extracted file. Passing <c>null</c> (<c>Nothing</c> in VB) will use the
+ /// path on the fileOrDirectoryName. Passing the empty string ("") will
+ /// insert the item at the root path within the archive.
+ /// </param>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddFile(string, string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddDirectory(string, string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateItem(string, string)"/>
+ ///
+ /// <example>
+ /// This example shows how to zip up a set of files into a flat hierarchy,
+ /// regardless of where in the filesystem the files originated. The resulting
+ /// zip archive will contain a toplevel directory named "flat", which itself
+ /// will contain files Readme.txt, MyProposal.docx, and Image1.jpg. A
+ /// subdirectory under "flat" called SupportFiles will contain all the files
+ /// in the "c:\SupportFiles" directory on disk.
+ ///
+ /// <code>
+ /// String[] itemnames= {
+ /// "c:\\fixedContent\\Readme.txt",
+ /// "MyProposal.docx",
+ /// "c:\\SupportFiles", // a directory
+ /// "images\\Image1.jpg"
+ /// };
+ ///
+ /// try
+ /// {
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// for (int i = 1; i < itemnames.Length; i++)
+ /// {
+ /// // will add Files or Dirs, recurses and flattens subdirectories
+ /// zip.AddItem(itemnames[i],"flat");
+ /// }
+ /// zip.Save(ZipToCreate);
+ /// }
+ /// }
+ /// catch (System.Exception ex1)
+ /// {
+ /// System.Console.Error.WriteLine("exception: {0}", ex1);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Dim itemnames As String() = _
+ /// New String() { "c:\fixedContent\Readme.txt", _
+ /// "MyProposal.docx", _
+ /// "SupportFiles", _
+ /// "images\Image1.jpg" }
+ /// Try
+ /// Using zip As New ZipFile
+ /// Dim i As Integer
+ /// For i = 1 To itemnames.Length - 1
+ /// ' will add Files or Dirs, recursing and flattening subdirectories.
+ /// zip.AddItem(itemnames(i), "flat")
+ /// Next i
+ /// zip.Save(ZipToCreate)
+ /// End Using
+ /// Catch ex1 As Exception
+ /// Console.Error.WriteLine("exception: {0}", ex1.ToString())
+ /// End Try
+ /// </code>
+ /// </example>
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ public ZipEntry AddItem(String fileOrDirectoryName, String directoryPathInArchive)
+ {
+ if (File.Exists(fileOrDirectoryName))
+ return AddFile(fileOrDirectoryName, directoryPathInArchive);
+
+ if (Directory.Exists(fileOrDirectoryName))
+ return AddDirectory(fileOrDirectoryName, directoryPathInArchive);
+
+ throw new FileNotFoundException(String.Format("That file or directory ({0}) does not exist!",
+ fileOrDirectoryName));
+ }
+
+ /// <summary>
+ /// Adds a File to a Zip file archive.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// This call collects metadata for the named file in the filesystem,
+ /// including the file attributes and the timestamp, and inserts that metadata
+ /// into the resulting ZipEntry. Only when the application calls Save() on
+ /// the <c>ZipFile</c>, does DotNetZip read the file from the filesystem and
+ /// then write the content to the zip file archive.
+ /// </para>
+ ///
+ /// <para>
+ /// This method will throw an exception if an entry with the same name already
+ /// exists in the <c>ZipFile</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to the
+ /// <c>ZipEntry</c> added.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// <para>
+ /// In this example, three files are added to a Zip archive. The ReadMe.txt
+ /// file will be placed in the root of the archive. The .png file will be
+ /// placed in a folder within the zip called photos\personal. The pdf file
+ /// will be included into a folder within the zip called Desktop.
+ /// </para>
+ /// <code>
+ /// try
+ /// {
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// zip.AddFile("c:\\photos\\personal\\7440-N49th.png");
+ /// zip.AddFile("c:\\Desktop\\2008-Regional-Sales-Report.pdf");
+ /// zip.AddFile("ReadMe.txt");
+ ///
+ /// zip.Save("Package.zip");
+ /// }
+ /// }
+ /// catch (System.Exception ex1)
+ /// {
+ /// System.Console.Error.WriteLine("exception: " + ex1);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Try
+ /// Using zip As ZipFile = New ZipFile
+ /// zip.AddFile("c:\photos\personal\7440-N49th.png")
+ /// zip.AddFile("c:\Desktop\2008-Regional-Sales-Report.pdf")
+ /// zip.AddFile("ReadMe.txt")
+ /// zip.Save("Package.zip")
+ /// End Using
+ /// Catch ex1 As Exception
+ /// Console.Error.WriteLine("exception: {0}", ex1.ToString)
+ /// End Try
+ /// </code>
+ /// </example>
+ ///
+ /// <overloads>This method has two overloads.</overloads>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddItem(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddDirectory(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateFile(string)"/>
+ ///
+ /// <param name="fileName">
+ /// The name of the file to add. It should refer to a file in the filesystem.
+ /// The name of the file may be a relative path or a fully-qualified path.
+ /// </param>
+ /// <returns>The <c>ZipEntry</c> corresponding to the File added.</returns>
+ public ZipEntry AddFile(string fileName)
+ {
+ return AddFile(fileName, null);
+ }
+
+
+
+
+
+ /// <summary>
+ /// Adds a File to a Zip file archive, potentially overriding the path to be
+ /// used within the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The file added by this call to the <c>ZipFile</c> is not written to the
+ /// zip file archive until the application calls Save() on the <c>ZipFile</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// This method will throw an exception if an entry with the same name already
+ /// exists in the <c>ZipFile</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// This version of the method allows the caller to explicitly specify the
+ /// directory path to be used in the archive.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to the
+ /// <c>ZipEntry</c> added.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// <para>
+ /// In this example, three files are added to a Zip archive. The ReadMe.txt
+ /// file will be placed in the root of the archive. The .png file will be
+ /// placed in a folder within the zip called images. The pdf file will be
+ /// included into a folder within the zip called files\docs, and will be
+ /// encrypted with the given password.
+ /// </para>
+ /// <code>
+ /// try
+ /// {
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// // the following entry will be inserted at the root in the archive.
+ /// zip.AddFile("c:\\datafiles\\ReadMe.txt", "");
+ /// // this image file will be inserted into the "images" directory in the archive.
+ /// zip.AddFile("c:\\photos\\personal\\7440-N49th.png", "images");
+ /// // the following will result in a password-protected file called
+ /// // files\\docs\\2008-Regional-Sales-Report.pdf in the archive.
+ /// zip.Password = "EncryptMe!";
+ /// zip.AddFile("c:\\Desktop\\2008-Regional-Sales-Report.pdf", "files\\docs");
+ /// zip.Save("Archive.zip");
+ /// }
+ /// }
+ /// catch (System.Exception ex1)
+ /// {
+ /// System.Console.Error.WriteLine("exception: {0}", ex1);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Try
+ /// Using zip As ZipFile = New ZipFile
+ /// ' the following entry will be inserted at the root in the archive.
+ /// zip.AddFile("c:\datafiles\ReadMe.txt", "")
+ /// ' this image file will be inserted into the "images" directory in the archive.
+ /// zip.AddFile("c:\photos\personal\7440-N49th.png", "images")
+ /// ' the following will result in a password-protected file called
+ /// ' files\\docs\\2008-Regional-Sales-Report.pdf in the archive.
+ /// zip.Password = "EncryptMe!"
+ /// zip.AddFile("c:\Desktop\2008-Regional-Sales-Report.pdf", "files\documents")
+ /// zip.Save("Archive.zip")
+ /// End Using
+ /// Catch ex1 As Exception
+ /// Console.Error.WriteLine("exception: {0}", ex1)
+ /// End Try
+ /// </code>
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddItem(string,string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddDirectory(string, string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateFile(string,string)"/>
+ ///
+ /// <param name="fileName">
+ /// The name of the file to add. The name of the file may be a relative path
+ /// or a fully-qualified path.
+ /// </param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// Specifies a directory path to use to override any path in the fileName.
+ /// This path may, or may not, correspond to a real directory in the current
+ /// filesystem. If the files within the zip are later extracted, this is the
+ /// path used for the extracted file. Passing <c>null</c> (<c>Nothing</c> in
+ /// VB) will use the path on the fileName, if any. Passing the empty string
+ /// ("") will insert the item at the root path within the archive.
+ /// </param>
+ ///
+ /// <returns>The <c>ZipEntry</c> corresponding to the file added.</returns>
+ public ZipEntry AddFile(string fileName, String directoryPathInArchive)
+ {
+ string nameInArchive = ZipEntry.NameInArchive(fileName, directoryPathInArchive);
+ ZipEntry ze = ZipEntry.CreateFromFile(fileName, nameInArchive);
+ if (Verbose) StatusMessageTextWriter.WriteLine("adding {0}...", fileName);
+ return _InternalAddEntry(ze);
+ }
+
+
+ /// <summary>
+ /// This method removes a collection of entries from the <c>ZipFile</c>.
+ /// </summary>
+ ///
+ /// <param name="entriesToRemove">
+ /// A collection of ZipEntry instances from this zip file to be removed. For
+ /// example, you can pass in an array of ZipEntry instances; or you can call
+ /// SelectEntries(), and then add or remove entries from that
+ /// ICollection<ZipEntry> (ICollection(Of ZipEntry) in VB), and pass
+ /// that ICollection to this method.
+ /// </param>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.SelectEntries(String)" />
+ /// <seealso cref="Ionic.Zip.ZipFile.RemoveSelectedEntries(String)" />
+ public void RemoveEntries(System.Collections.Generic.ICollection<ZipEntry> entriesToRemove)
+ {
+ if (entriesToRemove == null)
+ throw new ArgumentNullException("entriesToRemove");
+
+ foreach (ZipEntry e in entriesToRemove)
+ {
+ this.RemoveEntry(e);
+ }
+ }
+
+
+ /// <summary>
+ /// This method removes a collection of entries from the <c>ZipFile</c>, by name.
+ /// </summary>
+ ///
+ /// <param name="entriesToRemove">
+ /// A collection of strings that refer to names of entries to be removed
+ /// from the <c>ZipFile</c>. For example, you can pass in an array or a
+ /// List of Strings that provide the names of entries to be removed.
+ /// </param>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.SelectEntries(String)" />
+ /// <seealso cref="Ionic.Zip.ZipFile.RemoveSelectedEntries(String)" />
+ public void RemoveEntries(System.Collections.Generic.ICollection<String> entriesToRemove)
+ {
+ if (entriesToRemove == null)
+ throw new ArgumentNullException("entriesToRemove");
+
+ foreach (String e in entriesToRemove)
+ {
+ this.RemoveEntry(e);
+ }
+ }
+
+
+ /// <summary>
+ /// This method adds a set of files to the <c>ZipFile</c>.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Use this method to add a set of files to the zip archive, in one call.
+ /// For example, a list of files received from
+ /// <c>System.IO.Directory.GetFiles()</c> can be added to a zip archive in one
+ /// call.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to each
+ /// ZipEntry added.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="fileNames">
+ /// The collection of names of the files to add. Each string should refer to a
+ /// file in the filesystem. The name of the file may be a relative path or a
+ /// fully-qualified path.
+ /// </param>
+ ///
+ /// <example>
+ /// This example shows how to create a zip file, and add a few files into it.
+ /// <code>
+ /// String ZipFileToCreate = "archive1.zip";
+ /// String DirectoryToZip = "c:\\reports";
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// // Store all files found in the top level directory, into the zip archive.
+ /// String[] filenames = System.IO.Directory.GetFiles(DirectoryToZip);
+ /// zip.AddFiles(filenames);
+ /// zip.Save(ZipFileToCreate);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Dim ZipFileToCreate As String = "archive1.zip"
+ /// Dim DirectoryToZip As String = "c:\reports"
+ /// Using zip As ZipFile = New ZipFile
+ /// ' Store all files found in the top level directory, into the zip archive.
+ /// Dim filenames As String() = System.IO.Directory.GetFiles(DirectoryToZip)
+ /// zip.AddFiles(filenames)
+ /// zip.Save(ZipFileToCreate)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddSelectedFiles(String, String)" />
+ public void AddFiles(System.Collections.Generic.IEnumerable<String> fileNames)
+ {
+ this.AddFiles(fileNames, null);
+ }
+
+
+ /// <summary>
+ /// Adds or updates a set of files in the <c>ZipFile</c>.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Any files that already exist in the archive are updated. Any files that
+ /// don't yet exist in the archive are added.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to each
+ /// ZipEntry added.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="fileNames">
+ /// The collection of names of the files to update. Each string should refer to a file in
+ /// the filesystem. The name of the file may be a relative path or a fully-qualified path.
+ /// </param>
+ ///
+ public void UpdateFiles(System.Collections.Generic.IEnumerable<String> fileNames)
+ {
+ this.UpdateFiles(fileNames, null);
+ }
+
+
+ /// <summary>
+ /// Adds a set of files to the <c>ZipFile</c>, using the
+ /// specified directory path in the archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Any directory structure that may be present in the
+ /// filenames contained in the list is "flattened" in the
+ /// archive. Each file in the list is added to the archive in
+ /// the specified top-level directory.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see
+ /// cref="Encryption"/>, <see cref="Password"/>, <see
+ /// cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see
+ /// cref="ExtractExistingFile"/>, <see
+ /// cref="ZipErrorAction"/>, and <see
+ /// cref="CompressionLevel"/>, their respective values at the
+ /// time of this call will be applied to each ZipEntry added.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="fileNames">
+ /// The names of the files to add. Each string should refer to
+ /// a file in the filesystem. The name of the file may be a
+ /// relative path or a fully-qualified path.
+ /// </param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// Specifies a directory path to use to override any path in the file name.
+ /// Th is path may, or may not, correspond to a real directory in the current
+ /// filesystem. If the files within the zip are later extracted, this is the
+ /// path used for the extracted file. Passing <c>null</c> (<c>Nothing</c> in
+ /// VB) will use the path on each of the <c>fileNames</c>, if any. Passing
+ /// the empty string ("") will insert the item at the root path within the
+ /// archive.
+ /// </param>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddSelectedFiles(String, String)" />
+ public void AddFiles(System.Collections.Generic.IEnumerable<String> fileNames, String directoryPathInArchive)
+ {
+ AddFiles(fileNames, false, directoryPathInArchive);
+ }
+
+
+
+ /// <summary>
+ /// Adds a set of files to the <c>ZipFile</c>, using the specified directory
+ /// path in the archive, and preserving the full directory structure in the
+ /// filenames.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// Think of the <paramref name="directoryPathInArchive"/> as a "root" or
+ /// base directory used in the archive for the files that get added. when
+ /// <paramref name="preserveDirHierarchy"/> is true, the hierarchy of files
+ /// found in the filesystem will be placed, with the hierarchy intact,
+ /// starting at that root in the archive. When <c>preserveDirHierarchy</c>
+ /// is false, the path hierarchy of files is flattned, and the flattened
+ /// set of files gets placed in the root within the archive as specified in
+ /// <c>directoryPathInArchive</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to each
+ /// ZipEntry added.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="fileNames">
+ /// The names of the files to add. Each string should refer to a file in the
+ /// filesystem. The name of the file may be a relative path or a
+ /// fully-qualified path.
+ /// </param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// Specifies a directory path to use as a prefix for each entry name.
+ /// This path may, or may not, correspond to a real directory in the current
+ /// filesystem. If the files within the zip are later extracted, this is the
+ /// path used for the extracted file. Passing <c>null</c> (<c>Nothing</c> in
+ /// VB) will use the path on each of the <c>fileNames</c>, if any. Passing
+ /// the empty string ("") will insert the item at the root path within the
+ /// archive.
+ /// </param>
+ ///
+ /// <param name="preserveDirHierarchy">
+ /// whether the entries in the zip archive will reflect the directory
+ /// hierarchy that is present in the various filenames. For example, if
+ /// <paramref name="fileNames"/> includes two paths,
+ /// \Animalia\Chordata\Mammalia\Info.txt and
+ /// \Plantae\Magnoliophyta\Dicotyledon\Info.txt, then calling this method
+ /// with <paramref name="preserveDirHierarchy"/> = <c>false</c> will
+ /// result in an exception because of a duplicate entry name, while
+ /// calling this method with <paramref name="preserveDirHierarchy"/> =
+ /// <c>true</c> will result in the full direcory paths being included in
+ /// the entries added to the ZipFile.
+ /// </param>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddSelectedFiles(String, String)" />
+ public void AddFiles(System.Collections.Generic.IEnumerable<String> fileNames,
+ bool preserveDirHierarchy,
+ String directoryPathInArchive)
+ {
+ if (fileNames == null)
+ throw new ArgumentNullException("fileNames");
+
+ _addOperationCanceled = false;
+ OnAddStarted();
+ if (preserveDirHierarchy)
+ {
+ foreach (var f in fileNames)
+ {
+ if (_addOperationCanceled) break;
+ if (directoryPathInArchive != null)
+ {
+ //string s = SharedUtilities.NormalizePath(Path.Combine(directoryPathInArchive, Path.GetDirectoryName(f)));
+ string s = Path.GetFullPath(Path.Combine(directoryPathInArchive, Path.GetDirectoryName(f)));
+ this.AddFile(f, s);
+ }
+ else
+ this.AddFile(f, null);
+ }
+ }
+ else
+ {
+ foreach (var f in fileNames)
+ {
+ if (_addOperationCanceled) break;
+ this.AddFile(f, directoryPathInArchive);
+ }
+ }
+ if (!_addOperationCanceled)
+ OnAddCompleted();
+ }
+
+
+ /// <summary>
+ /// Adds or updates a set of files to the <c>ZipFile</c>, using the specified
+ /// directory path in the archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// Any files that already exist in the archive are updated. Any files that
+ /// don't yet exist in the archive are added.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to each
+ /// ZipEntry added.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="fileNames">
+ /// The names of the files to add or update. Each string should refer to a
+ /// file in the filesystem. The name of the file may be a relative path or a
+ /// fully-qualified path.
+ /// </param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// Specifies a directory path to use to override any path in the file name.
+ /// This path may, or may not, correspond to a real directory in the current
+ /// filesystem. If the files within the zip are later extracted, this is the
+ /// path used for the extracted file. Passing <c>null</c> (<c>Nothing</c> in
+ /// VB) will use the path on each of the <c>fileNames</c>, if any. Passing
+ /// the empty string ("") will insert the item at the root path within the
+ /// archive.
+ /// </param>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddSelectedFiles(String, String)" />
+ public void UpdateFiles(System.Collections.Generic.IEnumerable<String> fileNames, String directoryPathInArchive)
+ {
+ if (fileNames == null)
+ throw new ArgumentNullException("fileNames");
+
+ OnAddStarted();
+ foreach (var f in fileNames)
+ this.UpdateFile(f, directoryPathInArchive);
+ OnAddCompleted();
+ }
+
+
+
+
+ /// <summary>
+ /// Adds or Updates a File in a Zip file archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method adds a file to a zip archive, or, if the file already exists
+ /// in the zip archive, this method Updates the content of that given filename
+ /// in the zip archive. The <c>UpdateFile</c> method might more accurately be
+ /// called "AddOrUpdateFile".
+ /// </para>
+ ///
+ /// <para>
+ /// Upon success, there is no way for the application to learn whether the file
+ /// was added versus updated.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to the
+ /// <c>ZipEntry</c> added.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to Update an existing entry in a zipfile. The first
+ /// call to UpdateFile adds the file to the newly-created zip archive. The
+ /// second call to UpdateFile updates the content for that file in the zip
+ /// archive.
+ ///
+ /// <code>
+ /// using (ZipFile zip1 = new ZipFile())
+ /// {
+ /// // UpdateFile might more accurately be called "AddOrUpdateFile"
+ /// zip1.UpdateFile("MyDocuments\\Readme.txt");
+ /// zip1.UpdateFile("CustomerList.csv");
+ /// zip1.Comment = "This zip archive has been created.";
+ /// zip1.Save("Content.zip");
+ /// }
+ ///
+ /// using (ZipFile zip2 = ZipFile.Read("Content.zip"))
+ /// {
+ /// zip2.UpdateFile("Updates\\Readme.txt");
+ /// zip2.Comment = "This zip archive has been updated: The Readme.txt file has been changed.";
+ /// zip2.Save();
+ /// }
+ ///
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip1 As New ZipFile
+ /// ' UpdateFile might more accurately be called "AddOrUpdateFile"
+ /// zip1.UpdateFile("MyDocuments\Readme.txt")
+ /// zip1.UpdateFile("CustomerList.csv")
+ /// zip1.Comment = "This zip archive has been created."
+ /// zip1.Save("Content.zip")
+ /// End Using
+ ///
+ /// Using zip2 As ZipFile = ZipFile.Read("Content.zip")
+ /// zip2.UpdateFile("Updates\Readme.txt")
+ /// zip2.Comment = "This zip archive has been updated: The Readme.txt file has been changed."
+ /// zip2.Save
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddFile(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateDirectory(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateItem(string)"/>
+ ///
+ /// <param name="fileName">
+ /// The name of the file to add or update. It should refer to a file in the
+ /// filesystem. The name of the file may be a relative path or a
+ /// fully-qualified path.
+ /// </param>
+ ///
+ /// <returns>
+ /// The <c>ZipEntry</c> corresponding to the File that was added or updated.
+ /// </returns>
+ public ZipEntry UpdateFile(string fileName)
+ {
+ return UpdateFile(fileName, null);
+ }
+
+
+
+ /// <summary>
+ /// Adds or Updates a File in a Zip file archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method adds a file to a zip archive, or, if the file already exists
+ /// in the zip archive, this method Updates the content of that given filename
+ /// in the zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// This version of the method allows the caller to explicitly specify the
+ /// directory path to be used in the archive. The entry to be added or
+ /// updated is found by using the specified directory path, combined with the
+ /// basename of the specified filename.
+ /// </para>
+ ///
+ /// <para>
+ /// Upon success, there is no way for the application to learn if the file was
+ /// added versus updated.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to the
+ /// <c>ZipEntry</c> added.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddFile(string,string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateDirectory(string,string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateItem(string,string)"/>
+ ///
+ /// <param name="fileName">
+ /// The name of the file to add or update. It should refer to a file in the
+ /// filesystem. The name of the file may be a relative path or a
+ /// fully-qualified path.
+ /// </param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// Specifies a directory path to use to override any path in the
+ /// <c>fileName</c>. This path may, or may not, correspond to a real
+ /// directory in the current filesystem. If the files within the zip are
+ /// later extracted, this is the path used for the extracted file. Passing
+ /// <c>null</c> (<c>Nothing</c> in VB) will use the path on the
+ /// <c>fileName</c>, if any. Passing the empty string ("") will insert the
+ /// item at the root path within the archive.
+ /// </param>
+ ///
+ /// <returns>
+ /// The <c>ZipEntry</c> corresponding to the File that was added or updated.
+ /// </returns>
+ public ZipEntry UpdateFile(string fileName, String directoryPathInArchive)
+ {
+ // ideally this would all be transactional!
+ var key = ZipEntry.NameInArchive(fileName, directoryPathInArchive);
+ if (this[key] != null)
+ this.RemoveEntry(key);
+ return this.AddFile(fileName, directoryPathInArchive);
+ }
+
+
+
+
+
+ /// <summary>
+ /// Add or update a directory in a zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// If the specified directory does not exist in the archive, then this method
+ /// is equivalent to calling <c>AddDirectory()</c>. If the specified
+ /// directory already exists in the archive, then this method updates any
+ /// existing entries, and adds any new entries. Any entries that are in the
+ /// zip archive but not in the specified directory, are left alone. In other
+ /// words, the contents of the zip file will be a union of the previous
+ /// contents and the new files.
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateFile(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddDirectory(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateItem(string)"/>
+ ///
+ /// <param name="directoryName">
+ /// The path to the directory to be added to the zip archive, or updated in
+ /// the zip archive.
+ /// </param>
+ ///
+ /// <returns>
+ /// The <c>ZipEntry</c> corresponding to the Directory that was added or updated.
+ /// </returns>
+ public ZipEntry UpdateDirectory(string directoryName)
+ {
+ return UpdateDirectory(directoryName, null);
+ }
+
+
+ /// <summary>
+ /// Add or update a directory in the zip archive at the specified root
+ /// directory in the archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// If the specified directory does not exist in the archive, then this method
+ /// is equivalent to calling <c>AddDirectory()</c>. If the specified
+ /// directory already exists in the archive, then this method updates any
+ /// existing entries, and adds any new entries. Any entries that are in the
+ /// zip archive but not in the specified directory, are left alone. In other
+ /// words, the contents of the zip file will be a union of the previous
+ /// contents and the new files.
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateFile(string,string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddDirectory(string,string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateItem(string,string)"/>
+ ///
+ /// <param name="directoryName">
+ /// The path to the directory to be added to the zip archive, or updated
+ /// in the zip archive.
+ /// </param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// Specifies a directory path to use to override any path in the
+ /// <c>directoryName</c>. This path may, or may not, correspond to a real
+ /// directory in the current filesystem. If the files within the zip are
+ /// later extracted, this is the path used for the extracted file. Passing
+ /// <c>null</c> (<c>Nothing</c> in VB) will use the path on the
+ /// <c>directoryName</c>, if any. Passing the empty string ("") will insert
+ /// the item at the root path within the archive.
+ /// </param>
+ ///
+ /// <returns>
+ /// The <c>ZipEntry</c> corresponding to the Directory that was added or updated.
+ /// </returns>
+ public ZipEntry UpdateDirectory(string directoryName, String directoryPathInArchive)
+ {
+ return this.AddOrUpdateDirectoryImpl(directoryName, directoryPathInArchive, AddOrUpdateAction.AddOrUpdate);
+ }
+
+
+
+
+
+ /// <summary>
+ /// Add or update a file or directory in the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This is useful when the application is not sure or does not care if the
+ /// item to be added is a file or directory, and does not know or does not
+ /// care if the item already exists in the <c>ZipFile</c>. Calling this method
+ /// is equivalent to calling <c>RemoveEntry()</c> if an entry by the same name
+ /// already exists, followed calling by <c>AddItem()</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to the
+ /// <c>ZipEntry</c> added.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddItem(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateFile(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateDirectory(string)"/>
+ ///
+ /// <param name="itemName">
+ /// the path to the file or directory to be added or updated.
+ /// </param>
+ public void UpdateItem(string itemName)
+ {
+ UpdateItem(itemName, null);
+ }
+
+
+ /// <summary>
+ /// Add or update a file or directory.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method is useful when the application is not sure or does not care if
+ /// the item to be added is a file or directory, and does not know or does not
+ /// care if the item already exists in the <c>ZipFile</c>. Calling this method
+ /// is equivalent to calling <c>RemoveEntry()</c>, if an entry by that name
+ /// exists, and then calling <c>AddItem()</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// This version of the method allows the caller to explicitly specify the
+ /// directory path to be used for the item being added to the archive. The
+ /// entry or entries that are added or updated will use the specified
+ /// <c>DirectoryPathInArchive</c>. Extracting the entry from the archive will
+ /// result in a file stored in that directory path.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to the
+ /// <c>ZipEntry</c> added.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddItem(string, string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateFile(string, string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateDirectory(string, string)"/>
+ ///
+ /// <param name="itemName">
+ /// The path for the File or Directory to be added or updated.
+ /// </param>
+ /// <param name="directoryPathInArchive">
+ /// Specifies a directory path to use to override any path in the
+ /// <c>itemName</c>. This path may, or may not, correspond to a real
+ /// directory in the current filesystem. If the files within the zip are
+ /// later extracted, this is the path used for the extracted file. Passing
+ /// <c>null</c> (<c>Nothing</c> in VB) will use the path on the
+ /// <c>itemName</c>, if any. Passing the empty string ("") will insert the
+ /// item at the root path within the archive.
+ /// </param>
+ public void UpdateItem(string itemName, string directoryPathInArchive)
+ {
+ if (File.Exists(itemName))
+ UpdateFile(itemName, directoryPathInArchive);
+
+ else if (Directory.Exists(itemName))
+ UpdateDirectory(itemName, directoryPathInArchive);
+
+ else
+ throw new FileNotFoundException(String.Format("That file or directory ({0}) does not exist!", itemName));
+ }
+
+
+
+
+ /// <summary>
+ /// Adds a named entry into the zip archive, taking content for the entry
+ /// from a string.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Calling this method creates an entry using the given fileName and
+ /// directory path within the archive. There is no need for a file by the
+ /// given name to exist in the filesystem; the name is used within the zip
+ /// archive only. The content for the entry is encoded using the default text
+ /// encoding for the machine, or on Silverlight, using UTF-8.
+ /// </remarks>
+ ///
+ /// <param name="content">
+ /// The content of the file, should it be extracted from the zip.
+ /// </param>
+ ///
+ /// <param name="entryName">
+ /// The name, including any path, to use for the entry within the archive.
+ /// </param>
+ ///
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to add an entry to the zipfile, using a string as
+ /// content for that entry.
+ ///
+ /// <code lang="C#">
+ /// string Content = "This string will be the content of the Readme.txt file in the zip archive.";
+ /// using (ZipFile zip1 = new ZipFile())
+ /// {
+ /// zip1.AddFile("MyDocuments\\Resume.doc", "files");
+ /// zip1.AddEntry("Readme.txt", Content);
+ /// zip1.Comment = "This zip file was created at " + System.DateTime.Now.ToString("G");
+ /// zip1.Save("Content.zip");
+ /// }
+ ///
+ /// </code>
+ /// <code lang="VB">
+ /// Public Sub Run()
+ /// Dim Content As String = "This string will be the content of the Readme.txt file in the zip archive."
+ /// Using zip1 As ZipFile = New ZipFile
+ /// zip1.AddEntry("Readme.txt", Content)
+ /// zip1.AddFile("MyDocuments\Resume.doc", "files")
+ /// zip1.Comment = ("This zip file was created at " & DateTime.Now.ToString("G"))
+ /// zip1.Save("Content.zip")
+ /// End Using
+ /// End Sub
+ /// </code>
+ /// </example>
+ public ZipEntry AddEntry(string entryName, string content)
+ {
+#if SILVERLIGHT
+ return AddEntry(entryName, content, System.Text.Encoding.UTF8);
+#else
+ return AddEntry(entryName, content, System.Text.Encoding.Default);
+#endif
+ }
+
+
+
+ /// <summary>
+ /// Adds a named entry into the zip archive, taking content for the entry
+ /// from a string, and using the specified text encoding.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// Calling this method creates an entry using the given fileName and
+ /// directory path within the archive. There is no need for a file by the
+ /// given name to exist in the filesystem; the name is used within the zip
+ /// archive only.
+ /// </para>
+ ///
+ /// <para>
+ /// The content for the entry, a string value, is encoded using the given
+ /// text encoding. A BOM (byte-order-mark) is emitted into the file, if the
+ /// Encoding parameter is set for that.
+ /// </para>
+ ///
+ /// <para>
+ /// Most Encoding classes support a constructor that accepts a boolean,
+ /// indicating whether to emit a BOM or not. For example see <see
+ /// cref="System.Text.UTF8Encoding(bool)"/>.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="entryName">
+ /// The name, including any path, to use within the archive for the entry.
+ /// </param>
+ ///
+ /// <param name="content">
+ /// The content of the file, should it be extracted from the zip.
+ /// </param>
+ ///
+ /// <param name="encoding">
+ /// The text encoding to use when encoding the string. Be aware: This is
+ /// distinct from the text encoding used to encode the fileName, as specified
+ /// in <see cref="ProvisionalAlternateEncoding" />.
+ /// </param>
+ ///
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ ///
+ public ZipEntry AddEntry(string entryName, string content, System.Text.Encoding encoding)
+ {
+ // cannot employ a using clause here. We need the stream to
+ // persist after exit from this method.
+ var ms = new MemoryStream();
+
+ // cannot use a using clause here; StreamWriter takes
+ // ownership of the stream and Disposes it before we are ready.
+ var sw = new StreamWriter(ms, encoding);
+ sw.Write(content);
+ sw.Flush();
+
+ // reset to allow reading later
+ ms.Seek(0, SeekOrigin.Begin);
+
+ return AddEntry(entryName, ms);
+
+ // must not dispose the MemoryStream - it will be used later.
+ }
+
+
+ /// <summary>
+ /// Create an entry in the <c>ZipFile</c> using the given <c>Stream</c>
+ /// as input. The entry will have the given filename.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// The application should provide an open, readable stream; in this case it
+ /// will be read during the call to <see cref="ZipFile.Save()"/> or one of
+ /// its overloads.
+ /// </para>
+ ///
+ /// <para>
+ /// The passed stream will be read from its current position. If
+ /// necessary, callers should set the position in the stream before
+ /// calling AddEntry(). This might be appropriate when using this method
+ /// with a MemoryStream, for example.
+ /// </para>
+ ///
+ /// <para>
+ /// In cases where a large number of streams will be added to the
+ /// <c>ZipFile</c>, the application may wish to avoid maintaining all of the
+ /// streams open simultaneously. To handle this situation, the application
+ /// should use the <see cref="AddEntry(string, OpenDelegate, CloseDelegate)"/>
+ /// overload.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to the
+ /// <c>ZipEntry</c> added.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// <para>
+ /// This example adds a single entry to a <c>ZipFile</c> via a <c>Stream</c>.
+ /// </para>
+ ///
+ /// <code lang="C#">
+ /// String zipToCreate = "Content.zip";
+ /// String fileNameInArchive = "Content-From-Stream.bin";
+ /// using (System.IO.Stream streamToRead = MyStreamOpener())
+ /// {
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// ZipEntry entry= zip.AddEntry(fileNameInArchive, streamToRead);
+ /// zip.AddFile("Readme.txt");
+ /// zip.Save(zipToCreate); // the stream is read implicitly here
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Dim zipToCreate As String = "Content.zip"
+ /// Dim fileNameInArchive As String = "Content-From-Stream.bin"
+ /// Using streamToRead as System.IO.Stream = MyStreamOpener()
+ /// Using zip As ZipFile = New ZipFile()
+ /// Dim entry as ZipEntry = zip.AddEntry(fileNameInArchive, streamToRead)
+ /// zip.AddFile("Readme.txt")
+ /// zip.Save(zipToCreate) '' the stream is read implicitly, here
+ /// End Using
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateEntry(string, System.IO.Stream)"/>
+ ///
+ /// <param name="entryName">
+ /// The name, including any path, which is shown in the zip file for the added
+ /// entry.
+ /// </param>
+ /// <param name="stream">
+ /// The input stream from which to grab content for the file
+ /// </param>
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ public ZipEntry AddEntry(string entryName, Stream stream)
+ {
+ ZipEntry ze = ZipEntry.CreateForStream(entryName, stream);
+ ze.SetEntryTimes(DateTime.Now,DateTime.Now,DateTime.Now);
+ if (Verbose) StatusMessageTextWriter.WriteLine("adding {0}...", entryName);
+ return _InternalAddEntry(ze);
+ }
+
+
+
+ /// <summary>
+ /// Add a ZipEntry for which content is written directly by the application.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// When the application needs to write the zip entry data, use this
+ /// method to add the ZipEntry. For example, in the case that the
+ /// application wishes to write the XML representation of a DataSet into
+ /// a ZipEntry, the application can use this method to do so.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to the
+ /// <c>ZipEntry</c> added.
+ /// </para>
+ ///
+ /// <para>
+ /// About progress events: When using the WriteDelegate, DotNetZip does
+ /// not issue any SaveProgress events with <c>EventType</c> = <see
+ /// cref="ZipProgressEventType.Saving_EntryBytesRead">
+ /// Saving_EntryBytesRead</see>. (This is because it is the
+ /// application's code that runs in WriteDelegate - there's no way for
+ /// DotNetZip to know when to issue a EntryBytesRead event.)
+ /// Applications that want to update a progress bar or similar status
+ /// indicator should do so from within the WriteDelegate
+ /// itself. DotNetZip will issue the other SaveProgress events,
+ /// including <see cref="ZipProgressEventType.Saving_Started">
+ /// Saving_Started</see>,
+ /// <see cref="ZipProgressEventType.Saving_BeforeWriteEntry">
+ /// Saving_BeforeWriteEntry</see>, and <see
+ /// cref="ZipProgressEventType.Saving_AfterWriteEntry">
+ /// Saving_AfterWriteEntry</see>.
+ /// </para>
+ ///
+ /// <para>
+ /// Note: When you use PKZip encryption, it's normally necessary to
+ /// compute the CRC of the content to be encrypted, before compressing or
+ /// encrypting it. Therefore, when using PKZip encryption with a
+ /// WriteDelegate, the WriteDelegate CAN BE called twice: once to compute
+ /// the CRC, and the second time to potentially compress and
+ /// encrypt. Surprising, but true. This is because PKWARE specified that
+ /// the encryption initialization data depends on the CRC.
+ /// If this happens, for each call of the delegate, your
+ /// application must stream the same entry data in its entirety. If your
+ /// application writes different data during the second call, it will
+ /// result in a corrupt zip file.
+ /// </para>
+ ///
+ /// <para>
+ /// The double-read behavior happens with all types of entries, not only
+ /// those that use WriteDelegate. It happens if you add an entry from a
+ /// filesystem file, or using a string, or a stream, or an opener/closer
+ /// pair. But in those cases, DotNetZip takes care of reading twice; in
+ /// the case of the WriteDelegate, the application code gets invoked
+ /// twice. Be aware.
+ /// </para>
+ ///
+ /// <para>
+ /// As you can imagine, this can cause performance problems for large
+ /// streams, and it can lead to correctness problems when you use a
+ /// <c>WriteDelegate</c>. This is a pretty big pitfall. There are two
+ /// ways to avoid it. First, and most preferred: don't use PKZIP
+ /// encryption. If you use the WinZip AES encryption, this problem
+ /// doesn't occur, because the encryption protocol doesn't require the CRC
+ /// up front. Second: if you do choose to use PKZIP encryption, write out
+ /// to a non-seekable stream (like standard output, or the
+ /// Response.OutputStream in an ASP.NET application). In this case,
+ /// DotNetZip will use an alternative encryption protocol that does not
+ /// rely on the CRC of the content. This also implies setting bit 3 in
+ /// the zip entry, which still presents problems for some zip tools.
+ /// </para>
+ ///
+ /// <para>
+ /// In the future I may modify DotNetZip to *always* use bit 3 when PKZIP
+ /// encryption is in use. This seems like a win overall, but there will
+ /// be some work involved. If you feel strongly about it, visit the
+ /// DotNetZip forums and vote up <see
+ /// href="http://dotnetzip.codeplex.com/workitem/13686">the Workitem
+ /// tracking this issue</see>.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="entryName">the name of the entry to add</param>
+ /// <param name="writer">the delegate which will write the entry content</param>
+ /// <returns>the ZipEntry added</returns>
+ ///
+ /// <example>
+ ///
+ /// This example shows an application filling a DataSet, then saving the
+ /// contents of that DataSet as XML, into a ZipEntry in a ZipFile, using an
+ /// anonymous delegate in C#. The DataSet XML is never saved to a disk file.
+ ///
+ /// <code lang="C#">
+ /// var c1= new System.Data.SqlClient.SqlConnection(connstring1);
+ /// var da = new System.Data.SqlClient.SqlDataAdapter()
+ /// {
+ /// SelectCommand= new System.Data.SqlClient.SqlCommand(strSelect, c1)
+ /// };
+ ///
+ /// DataSet ds1 = new DataSet();
+ /// da.Fill(ds1, "Invoices");
+ ///
+ /// using(Ionic.Zip.ZipFile zip = new Ionic.Zip.ZipFile())
+ /// {
+ /// zip.AddEntry(zipEntryName, (name,stream) => ds1.WriteXml(stream) );
+ /// zip.Save(zipFileName);
+ /// }
+ /// </code>
+ /// </example>
+ ///
+ /// <example>
+ ///
+ /// This example uses an anonymous method in C# as the WriteDelegate to provide
+ /// the data for the ZipEntry. The example is a bit contrived - the
+ /// <c>AddFile()</c> method is a simpler way to insert the contents of a file
+ /// into an entry in a zip file. On the other hand, if there is some sort of
+ /// processing or transformation of the file contents required before writing,
+ /// the application could use the <c>WriteDelegate</c> to do it, in this way.
+ ///
+ /// <code lang="C#">
+ /// using (var input = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite ))
+ /// {
+ /// using(Ionic.Zip.ZipFile zip = new Ionic.Zip.ZipFile())
+ /// {
+ /// zip.AddEntry(zipEntryName, (name,output) =>
+ /// {
+ /// byte[] buffer = new byte[BufferSize];
+ /// int n;
+ /// while ((n = input.Read(buffer, 0, buffer.Length)) != 0)
+ /// {
+ /// // could transform the data here...
+ /// output.Write(buffer, 0, n);
+ /// // could update a progress bar here
+ /// }
+ /// });
+ ///
+ /// zip.Save(zipFileName);
+ /// }
+ /// }
+ /// </code>
+ /// </example>
+ ///
+ /// <example>
+ ///
+ /// This example uses a named delegate in VB to write data for the given
+ /// ZipEntry (VB9 does not have anonymous delegates). The example here is a bit
+ /// contrived - a simpler way to add the contents of a file to a ZipEntry is to
+ /// simply use the appropriate <c>AddFile()</c> method. The key scenario for
+ /// which the <c>WriteDelegate</c> makes sense is saving a DataSet, in XML
+ /// format, to the zip file. The DataSet can write XML to a stream, and the
+ /// WriteDelegate is the perfect place to write into the zip file. There may be
+ /// other data structures that can write to a stream, but cannot be read as a
+ /// stream. The <c>WriteDelegate</c> would be appropriate for those cases as
+ /// well.
+ ///
+ /// <code lang="VB">
+ /// Private Sub WriteEntry (ByVal name As String, ByVal output As Stream)
+ /// Using input As FileStream = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)
+ /// Dim n As Integer = -1
+ /// Dim buffer As Byte() = New Byte(BufferSize){}
+ /// Do While n <> 0
+ /// n = input.Read(buffer, 0, buffer.Length)
+ /// output.Write(buffer, 0, n)
+ /// Loop
+ /// End Using
+ /// End Sub
+ ///
+ /// Public Sub Run()
+ /// Using zip = New ZipFile
+ /// zip.AddEntry(zipEntryName, New WriteDelegate(AddressOf WriteEntry))
+ /// zip.Save(zipFileName)
+ /// End Using
+ /// End Sub
+ /// </code>
+ /// </example>
+ public ZipEntry AddEntry(string entryName, WriteDelegate writer)
+ {
+ ZipEntry ze = ZipEntry.CreateForWriter(entryName, writer);
+ if (Verbose) StatusMessageTextWriter.WriteLine("adding {0}...", entryName);
+ return _InternalAddEntry(ze);
+ }
+
+
+ /// <summary>
+ /// Add an entry, for which the application will provide a stream
+ /// containing the entry data, on a just-in-time basis.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// In cases where the application wishes to open the stream that
+ /// holds the content for the ZipEntry, on a just-in-time basis, the
+ /// application can use this method. The application provides an
+ /// opener delegate that will be called by the DotNetZip library to
+ /// obtain a readable stream that can be read to get the bytes for
+ /// the given entry. Typically, this delegate opens a stream.
+ /// Optionally, the application can provide a closer delegate as
+ /// well, which will be called by DotNetZip when all bytes have been
+ /// read from the entry.
+ /// </para>
+ ///
+ /// <para>
+ /// These delegates are called from within the scope of the call to
+ /// ZipFile.Save().
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to the
+ /// <c>ZipEntry</c> added.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example uses anonymous methods in C# to open and close the
+ /// source stream for the content for a zip entry.
+ ///
+ /// <code lang="C#">
+ /// using(Ionic.Zip.ZipFile zip = new Ionic.Zip.ZipFile())
+ /// {
+ /// zip.AddEntry(zipEntryName,
+ /// (name) => File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite ),
+ /// (name, stream) => stream.Close()
+ /// );
+ ///
+ /// zip.Save(zipFileName);
+ /// }
+ /// </code>
+ ///
+ /// </example>
+ ///
+ /// <example>
+ ///
+ /// This example uses delegates in VB.NET to open and close the
+ /// the source stream for the content for a zip entry. VB 9.0 lacks
+ /// support for "Sub" lambda expressions, and so the CloseDelegate must
+ /// be an actual, named Sub.
+ ///
+ /// <code lang="VB">
+ ///
+ /// Function MyStreamOpener(ByVal entryName As String) As Stream
+ /// '' This simply opens a file. You probably want to do somethinig
+ /// '' more involved here: open a stream to read from a database,
+ /// '' open a stream on an HTTP connection, and so on.
+ /// Return File.OpenRead(entryName)
+ /// End Function
+ ///
+ /// Sub MyStreamCloser(entryName As String, stream As Stream)
+ /// stream.Close()
+ /// End Sub
+ ///
+ /// Public Sub Run()
+ /// Dim dirToZip As String = "fodder"
+ /// Dim zipFileToCreate As String = "Archive.zip"
+ /// Dim opener As OpenDelegate = AddressOf MyStreamOpener
+ /// Dim closer As CloseDelegate = AddressOf MyStreamCloser
+ /// Dim numFilestoAdd As Int32 = 4
+ /// Using zip As ZipFile = New ZipFile
+ /// Dim i As Integer
+ /// For i = 0 To numFilesToAdd - 1
+ /// zip.AddEntry(String.Format("content-{0:000}.txt"), opener, closer)
+ /// Next i
+ /// zip.Save(zipFileToCreate)
+ /// End Using
+ /// End Sub
+ ///
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="entryName">the name of the entry to add</param>
+ /// <param name="opener">
+ /// the delegate that will be invoked by ZipFile.Save() to get the
+ /// readable stream for the given entry. ZipFile.Save() will call
+ /// read on this stream to obtain the data for the entry. This data
+ /// will then be compressed and written to the newly created zip
+ /// file.
+ /// </param>
+ /// <param name="closer">
+ /// the delegate that will be invoked to close the stream. This may
+ /// be null (Nothing in VB), in which case no call is makde to close
+ /// the stream.
+ /// </param>
+ /// <returns>the ZipEntry added</returns>
+ ///
+ public ZipEntry AddEntry(string entryName, OpenDelegate opener, CloseDelegate closer)
+ {
+ ZipEntry ze = ZipEntry.CreateForJitStreamProvider(entryName, opener, closer);
+ ze.SetEntryTimes(DateTime.Now,DateTime.Now,DateTime.Now);
+ if (Verbose) StatusMessageTextWriter.WriteLine("adding {0}...", entryName);
+ return _InternalAddEntry(ze);
+ }
+
+
+
+ private ZipEntry _InternalAddEntry(ZipEntry ze)
+ {
+ // stamp all the props onto the entry
+ ze._container = new ZipContainer(this);
+ ze.CompressionMethod = this.CompressionMethod;
+ ze.CompressionLevel = this.CompressionLevel;
+ ze.ExtractExistingFile = this.ExtractExistingFile;
+ ze.ZipErrorAction = this.ZipErrorAction;
+ ze.SetCompression = this.SetCompression;
+ ze.AlternateEncoding = this.AlternateEncoding;
+ ze.AlternateEncodingUsage = this.AlternateEncodingUsage;
+ ze.Password = this._Password;
+ ze.Encryption = this.Encryption;
+ ze.EmitTimesInWindowsFormatWhenSaving = this._emitNtfsTimes;
+ ze.EmitTimesInUnixFormatWhenSaving = this._emitUnixTimes;
+ //string key = DictionaryKeyForEntry(ze);
+ InternalAddEntry(ze.FileName,ze);
+ AfterAddEntry(ze);
+ return ze;
+ }
+
+
+
+
+ /// <summary>
+ /// Updates the given entry in the <c>ZipFile</c>, using the given
+ /// string as content for the <c>ZipEntry</c>.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// Calling this method is equivalent to removing the <c>ZipEntry</c> for
+ /// the given file name and directory path, if it exists, and then calling
+ /// <see cref="AddEntry(String,String)" />. See the documentation for
+ /// that method for further explanation. The string content is encoded
+ /// using the default encoding for the machine, or on Silverlight, using
+ /// UTF-8. This encoding is distinct from the encoding used for the
+ /// filename itself. See <see cref="AlternateEncoding"/>.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="entryName">
+ /// The name, including any path, to use within the archive for the entry.
+ /// </param>
+ ///
+ /// <param name="content">
+ /// The content of the file, should it be extracted from the zip.
+ /// </param>
+ ///
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ ///
+ public ZipEntry UpdateEntry(string entryName, string content)
+ {
+#if SILVERLIGHT
+ return UpdateEntry(entryName, content, System.Text.Encoding.UTF8);
+#else
+ return UpdateEntry(entryName, content, System.Text.Encoding.Default);
+#endif
+ }
+
+
+ /// <summary>
+ /// Updates the given entry in the <c>ZipFile</c>, using the given string as
+ /// content for the <c>ZipEntry</c>.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Calling this method is equivalent to removing the <c>ZipEntry</c> for the
+ /// given file name and directory path, if it exists, and then calling <see
+ /// cref="AddEntry(String,String, System.Text.Encoding)" />. See the
+ /// documentation for that method for further explanation.
+ /// </remarks>
+ ///
+ /// <param name="entryName">
+ /// The name, including any path, to use within the archive for the entry.
+ /// </param>
+ ///
+ /// <param name="content">
+ /// The content of the file, should it be extracted from the zip.
+ /// </param>
+ ///
+ /// <param name="encoding">
+ /// The text encoding to use when encoding the string. Be aware: This is
+ /// distinct from the text encoding used to encode the filename. See <see
+ /// cref="AlternateEncoding" />.
+ /// </param>
+ ///
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ ///
+ public ZipEntry UpdateEntry(string entryName, string content, System.Text.Encoding encoding)
+ {
+ RemoveEntryForUpdate(entryName);
+ return AddEntry(entryName, content, encoding);
+ }
+
+
+
+ /// <summary>
+ /// Updates the given entry in the <c>ZipFile</c>, using the given delegate
+ /// as the source for content for the <c>ZipEntry</c>.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Calling this method is equivalent to removing the <c>ZipEntry</c> for the
+ /// given file name and directory path, if it exists, and then calling <see
+ /// cref="AddEntry(String,WriteDelegate)" />. See the
+ /// documentation for that method for further explanation.
+ /// </remarks>
+ ///
+ /// <param name="entryName">
+ /// The name, including any path, to use within the archive for the entry.
+ /// </param>
+ ///
+ /// <param name="writer">the delegate which will write the entry content.</param>
+ ///
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ ///
+ public ZipEntry UpdateEntry(string entryName, WriteDelegate writer)
+ {
+ RemoveEntryForUpdate(entryName);
+ return AddEntry(entryName, writer);
+ }
+
+
+
+ /// <summary>
+ /// Updates the given entry in the <c>ZipFile</c>, using the given delegates
+ /// to open and close the stream that provides the content for the <c>ZipEntry</c>.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Calling this method is equivalent to removing the <c>ZipEntry</c> for the
+ /// given file name and directory path, if it exists, and then calling <see
+ /// cref="AddEntry(String,OpenDelegate, CloseDelegate)" />. See the
+ /// documentation for that method for further explanation.
+ /// </remarks>
+ ///
+ /// <param name="entryName">
+ /// The name, including any path, to use within the archive for the entry.
+ /// </param>
+ ///
+ /// <param name="opener">
+ /// the delegate that will be invoked to open the stream
+ /// </param>
+ /// <param name="closer">
+ /// the delegate that will be invoked to close the stream
+ /// </param>
+ ///
+ /// <returns>The <c>ZipEntry</c> added or updated.</returns>
+ ///
+ public ZipEntry UpdateEntry(string entryName, OpenDelegate opener, CloseDelegate closer)
+ {
+ RemoveEntryForUpdate(entryName);
+ return AddEntry(entryName, opener, closer);
+ }
+
+
+ /// <summary>
+ /// Updates the given entry in the <c>ZipFile</c>, using the given stream as
+ /// input, and the given filename and given directory Path.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Calling the method is equivalent to calling <c>RemoveEntry()</c> if an
+ /// entry by the same name already exists, and then calling <c>AddEntry()</c>
+ /// with the given <c>fileName</c> and stream.
+ /// </para>
+ ///
+ /// <para>
+ /// The stream must be open and readable during the call to
+ /// <c>ZipFile.Save</c>. You can dispense the stream on a just-in-time basis
+ /// using the <see cref="ZipEntry.InputStream"/> property. Check the
+ /// documentation of that property for more information.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to the
+ /// <c>ZipEntry</c> added.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddEntry(string, System.IO.Stream)"/>
+ /// <seealso cref="Ionic.Zip.ZipEntry.InputStream"/>
+ ///
+ /// <param name="entryName">
+ /// The name, including any path, to use within the archive for the entry.
+ /// </param>
+ ///
+ /// <param name="stream">The input stream from which to read file data.</param>
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ public ZipEntry UpdateEntry(string entryName, Stream stream)
+ {
+ RemoveEntryForUpdate(entryName);
+ return AddEntry(entryName, stream);
+ }
+
+
+ private void RemoveEntryForUpdate(string entryName)
+ {
+ if (String.IsNullOrEmpty(entryName))
+ throw new ArgumentNullException("entryName");
+
+ string directoryPathInArchive = null;
+ if (entryName.IndexOf('\\') != -1)
+ {
+ directoryPathInArchive = Path.GetDirectoryName(entryName);
+ entryName = Path.GetFileName(entryName);
+ }
+ var key = ZipEntry.NameInArchive(entryName, directoryPathInArchive);
+ if (this[key] != null)
+ this.RemoveEntry(key);
+ }
+
+
+
+
+ /// <summary>
+ /// Add an entry into the zip archive using the given filename and
+ /// directory path within the archive, and the given content for the
+ /// file. No file is created in the filesystem.
+ /// </summary>
+ ///
+ /// <param name="byteContent">The data to use for the entry.</param>
+ ///
+ /// <param name="entryName">
+ /// The name, including any path, to use within the archive for the entry.
+ /// </param>
+ ///
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ public ZipEntry AddEntry(string entryName, byte[] byteContent)
+ {
+ if (byteContent == null) throw new ArgumentException("bad argument", "byteContent");
+ var ms = new MemoryStream(byteContent);
+ return AddEntry(entryName, ms);
+ }
+
+
+ /// <summary>
+ /// Updates the given entry in the <c>ZipFile</c>, using the given byte
+ /// array as content for the entry.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Calling this method is equivalent to removing the <c>ZipEntry</c>
+ /// for the given filename and directory path, if it exists, and then
+ /// calling <see cref="AddEntry(String,byte[])" />. See the
+ /// documentation for that method for further explanation.
+ /// </remarks>
+ ///
+ /// <param name="entryName">
+ /// The name, including any path, to use within the archive for the entry.
+ /// </param>
+ ///
+ /// <param name="byteContent">The content to use for the <c>ZipEntry</c>.</param>
+ ///
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ ///
+ public ZipEntry UpdateEntry(string entryName, byte[] byteContent)
+ {
+ RemoveEntryForUpdate(entryName);
+ return AddEntry(entryName, byteContent);
+ }
+
+
+// private string DictionaryKeyForEntry(ZipEntry ze1)
+// {
+// var filename = SharedUtilities.NormalizePathForUseInZipFile(ze1.FileName);
+// return filename;
+// }
+
+
+ /// <summary>
+ /// Adds the contents of a filesystem directory to a Zip file archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// The name of the directory may be a relative path or a fully-qualified
+ /// path. Any files within the named directory are added to the archive. Any
+ /// subdirectories within the named directory are also added to the archive,
+ /// recursively.
+ /// </para>
+ ///
+ /// <para>
+ /// Top-level entries in the named directory will appear as top-level entries
+ /// in the zip archive. Entries in subdirectories in the named directory will
+ /// result in entries in subdirectories in the zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// If you want the entries to appear in a containing directory in the zip
+ /// archive itself, then you should call the AddDirectory() overload that
+ /// allows you to explicitly specify a directory path for use in the archive.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to each
+ /// ZipEntry added.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddItem(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddFile(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateDirectory(string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddDirectory(string, string)"/>
+ ///
+ /// <overloads>This method has 2 overloads.</overloads>
+ ///
+ /// <param name="directoryName">The name of the directory to add.</param>
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ public ZipEntry AddDirectory(string directoryName)
+ {
+ return AddDirectory(directoryName, null);
+ }
+
+
+ /// <summary>
+ /// Adds the contents of a filesystem directory to a Zip file archive,
+ /// overriding the path to be used for entries in the archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The name of the directory may be a relative path or a fully-qualified
+ /// path. The add operation is recursive, so that any files or subdirectories
+ /// within the name directory are also added to the archive.
+ /// </para>
+ ///
+ /// <para>
+ /// Top-level entries in the named directory will appear as top-level entries
+ /// in the zip archive. Entries in subdirectories in the named directory will
+ /// result in entries in subdirectories in the zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// For <c>ZipFile</c> properties including <see cref="Encryption"/>, <see
+ /// cref="Password"/>, <see cref="SetCompression"/>, <see
+ /// cref="ProvisionalAlternateEncoding"/>, <see cref="ExtractExistingFile"/>,
+ /// <see cref="ZipErrorAction"/>, and <see cref="CompressionLevel"/>, their
+ /// respective values at the time of this call will be applied to each
+ /// ZipEntry added.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// <para>
+ /// In this code, calling the ZipUp() method with a value of "c:\reports" for
+ /// the directory parameter will result in a zip file structure in which all
+ /// entries are contained in a toplevel "reports" directory.
+ /// </para>
+ ///
+ /// <code lang="C#">
+ /// public void ZipUp(string targetZip, string directory)
+ /// {
+ /// using (var zip = new ZipFile())
+ /// {
+ /// zip.AddDirectory(directory, System.IO.Path.GetFileName(directory));
+ /// zip.Save(targetZip);
+ /// }
+ /// }
+ /// </code>
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddItem(string, string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddFile(string, string)"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.UpdateDirectory(string, string)"/>
+ ///
+ /// <param name="directoryName">The name of the directory to add.</param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// Specifies a directory path to use to override any path in the
+ /// DirectoryName. This path may, or may not, correspond to a real directory
+ /// in the current filesystem. If the zip is later extracted, this is the
+ /// path used for the extracted file or directory. Passing <c>null</c>
+ /// (<c>Nothing</c> in VB) or the empty string ("") will insert the items at
+ /// the root path within the archive.
+ /// </param>
+ ///
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ public ZipEntry AddDirectory(string directoryName, string directoryPathInArchive)
+ {
+ return AddOrUpdateDirectoryImpl(directoryName, directoryPathInArchive, AddOrUpdateAction.AddOnly);
+ }
+
+
+ /// <summary>
+ /// Creates a directory in the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// Use this when you want to create a directory in the archive but there is
+ /// no corresponding filesystem representation for that directory.
+ /// </para>
+ ///
+ /// <para>
+ /// You will probably not need to do this in your code. One of the only times
+ /// you will want to do this is if you want an empty directory in the zip
+ /// archive. The reason: if you add a file to a zip archive that is stored
+ /// within a multi-level directory, all of the directory tree is implicitly
+ /// created in the zip archive.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="directoryNameInArchive">
+ /// The name of the directory to create in the archive.
+ /// </param>
+ /// <returns>The <c>ZipEntry</c> added.</returns>
+ public ZipEntry AddDirectoryByName(string directoryNameInArchive)
+ {
+ // workitem 9073
+ ZipEntry dir = ZipEntry.CreateFromNothing(directoryNameInArchive);
+ dir._container = new ZipContainer(this);
+ dir.MarkAsDirectory();
+ dir.AlternateEncoding = this.AlternateEncoding; // workitem 8984
+ dir.AlternateEncodingUsage = this.AlternateEncodingUsage;
+ dir.SetEntryTimes(DateTime.Now,DateTime.Now,DateTime.Now);
+ dir.EmitTimesInWindowsFormatWhenSaving = _emitNtfsTimes;
+ dir.EmitTimesInUnixFormatWhenSaving = _emitUnixTimes;
+ dir._Source = ZipEntrySource.Stream;
+ //string key = DictionaryKeyForEntry(dir);
+ InternalAddEntry(dir.FileName,dir);
+ AfterAddEntry(dir);
+ return dir;
+ }
+
+
+
+ private ZipEntry AddOrUpdateDirectoryImpl(string directoryName,
+ string rootDirectoryPathInArchive,
+ AddOrUpdateAction action)
+ {
+ if (rootDirectoryPathInArchive == null)
+ {
+ rootDirectoryPathInArchive = "";
+ }
+
+ return AddOrUpdateDirectoryImpl(directoryName, rootDirectoryPathInArchive, action, true, 0);
+ }
+
+
+ internal void InternalAddEntry(String name, ZipEntry entry)
+ {
+ _entries.Add(name, entry);
+ _zipEntriesAsList = null;
+ _contentsChanged = true;
+ }
+
+
+
+ private ZipEntry AddOrUpdateDirectoryImpl(string directoryName,
+ string rootDirectoryPathInArchive,
+ AddOrUpdateAction action,
+ bool recurse,
+ int level)
+ {
+ if (Verbose)
+ StatusMessageTextWriter.WriteLine("{0} {1}...",
+ (action == AddOrUpdateAction.AddOnly) ? "adding" : "Adding or updating",
+ directoryName);
+
+ if (level == 0)
+ {
+ _addOperationCanceled = false;
+ OnAddStarted();
+ }
+
+ // workitem 13371
+ if (_addOperationCanceled)
+ return null;
+
+ string dirForEntries = rootDirectoryPathInArchive;
+ ZipEntry baseDir = null;
+
+ if (level > 0)
+ {
+ int f = directoryName.Length;
+ for (int i = level; i > 0; i--)
+ f = directoryName.LastIndexOfAny("/\\".ToCharArray(), f - 1, f - 1);
+
+ dirForEntries = directoryName.Substring(f + 1);
+ dirForEntries = Path.Combine(rootDirectoryPathInArchive, dirForEntries);
+ }
+
+ // if not top level, or if the root is non-empty, then explicitly add the directory
+ if (level > 0 || rootDirectoryPathInArchive != "")
+ {
+ baseDir = ZipEntry.CreateFromFile(directoryName, dirForEntries);
+ baseDir._container = new ZipContainer(this);
+ baseDir.AlternateEncoding = this.AlternateEncoding; // workitem 6410
+ baseDir.AlternateEncodingUsage = this.AlternateEncodingUsage;
+ baseDir.MarkAsDirectory();
+ baseDir.EmitTimesInWindowsFormatWhenSaving = _emitNtfsTimes;
+ baseDir.EmitTimesInUnixFormatWhenSaving = _emitUnixTimes;
+
+ // add the directory only if it does not exist.
+ // It's not an error if it already exists.
+ if (!_entries.ContainsKey(baseDir.FileName))
+ {
+ InternalAddEntry(baseDir.FileName,baseDir);
+ AfterAddEntry(baseDir);
+ }
+ dirForEntries = baseDir.FileName;
+ }
+
+ if (!_addOperationCanceled)
+ {
+
+ String[] filenames = Directory.GetFiles(directoryName);
+
+ if (recurse)
+ {
+ // add the files:
+ foreach (String filename in filenames)
+ {
+ if (_addOperationCanceled) break;
+ if (action == AddOrUpdateAction.AddOnly)
+ AddFile(filename, dirForEntries);
+ else
+ UpdateFile(filename, dirForEntries);
+ }
+
+ if (!_addOperationCanceled)
+ {
+ // add the subdirectories:
+ String[] dirnames = Directory.GetDirectories(directoryName);
+ foreach (String dir in dirnames)
+ {
+ // workitem 8617: Optionally traverse reparse points
+#if SILVERLIGHT
+#elif NETCF
+ FileAttributes fileAttrs = (FileAttributes) NetCfFile.GetAttributes(dir);
+#else
+ FileAttributes fileAttrs = System.IO.File.GetAttributes(dir);
+#endif
+ if (this.AddDirectoryWillTraverseReparsePoints
+#if !SILVERLIGHT
+ || ((fileAttrs & FileAttributes.ReparsePoint) == 0)
+#endif
+ )
+ AddOrUpdateDirectoryImpl(dir, rootDirectoryPathInArchive, action, recurse, level + 1);
+
+ }
+
+ }
+ }
+ }
+
+ if (level == 0)
+ OnAddCompleted();
+
+ return baseDir;
+ }
+
+ }
+
+}
--- /dev/null
+// ZipFile.Check.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009-2011 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-July-31 14:40:50>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the methods for doing Checks on zip files.
+// These are not necessary to include in the Reduced or CF
+// version of the library.
+//
+// ------------------------------------------------------------------
+//
+
+
+using System;
+using System.IO;
+using System.Collections.Generic;
+
+namespace Ionic.Zip
+{
+ internal partial class ZipFile
+ {
+ /// <summary>
+ /// Checks a zip file to see if its directory is consistent.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// In cases of data error, the directory within a zip file can get out
+ /// of synch with the entries in the zip file. This method checks the
+ /// given zip file and returns true if this has occurred.
+ /// </para>
+ ///
+ /// <para> This method may take a long time to run for large zip files. </para>
+ ///
+ /// <para>
+ /// This method is not supported in the Reduced or Compact Framework
+ /// versions of DotNetZip.
+ /// </para>
+ ///
+ /// <para>
+ /// Developers using COM can use the <see
+ /// cref="ComHelper.CheckZip(String)">ComHelper.CheckZip(String)</see>
+ /// method.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="zipFileName">The filename to of the zip file to check.</param>
+ ///
+ /// <returns>true if the named zip file checks OK. Otherwise, false. </returns>
+ ///
+ /// <seealso cref="FixZipDirectory(string)"/>
+ /// <seealso cref="CheckZip(string,bool,System.IO.TextWriter)"/>
+ internal static bool CheckZip(string zipFileName)
+ {
+ return CheckZip(zipFileName, false, null);
+ }
+
+
+ /// <summary>
+ /// Checks a zip file to see if its directory is consistent,
+ /// and optionally fixes the directory if necessary.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// In cases of data error, the directory within a zip file can get out of
+ /// synch with the entries in the zip file. This method checks the given
+ /// zip file, and returns true if this has occurred. It also optionally
+ /// fixes the zipfile, saving the fixed copy in <em>Name</em>_Fixed.zip.
+ /// </para>
+ ///
+ /// <para>
+ /// This method may take a long time to run for large zip files. It
+ /// will take even longer if the file actually needs to be fixed, and if
+ /// <c>fixIfNecessary</c> is true.
+ /// </para>
+ ///
+ /// <para>
+ /// This method is not supported in the Reduced or Compact
+ /// Framework versions of DotNetZip.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="zipFileName">The filename to of the zip file to check.</param>
+ ///
+ /// <param name="fixIfNecessary">If true, the method will fix the zip file if
+ /// necessary.</param>
+ ///
+ /// <param name="writer">
+ /// a TextWriter in which messages generated while checking will be written.
+ /// </param>
+ ///
+ /// <returns>true if the named zip is OK; false if the file needs to be fixed.</returns>
+ ///
+ /// <seealso cref="CheckZip(string)"/>
+ /// <seealso cref="FixZipDirectory(string)"/>
+ internal static bool CheckZip(string zipFileName, bool fixIfNecessary,
+ TextWriter writer)
+
+ {
+ ZipFile zip1 = null, zip2 = null;
+ bool isOk = true;
+ try
+ {
+ zip1 = new ZipFile();
+ zip1.FullScan = true;
+ zip1.Initialize(zipFileName);
+
+ zip2 = ZipFile.Read(zipFileName);
+
+ foreach (var e1 in zip1)
+ {
+ foreach (var e2 in zip2)
+ {
+ if (e1.FileName == e2.FileName)
+ {
+ if (e1._RelativeOffsetOfLocalHeader != e2._RelativeOffsetOfLocalHeader)
+ {
+ isOk = false;
+ if (writer != null)
+ writer.WriteLine("{0}: mismatch in RelativeOffsetOfLocalHeader (0x{1:X16} != 0x{2:X16})",
+ e1.FileName, e1._RelativeOffsetOfLocalHeader,
+ e2._RelativeOffsetOfLocalHeader);
+ }
+ if (e1._CompressedSize != e2._CompressedSize)
+ {
+ isOk = false;
+ if (writer != null)
+ writer.WriteLine("{0}: mismatch in CompressedSize (0x{1:X16} != 0x{2:X16})",
+ e1.FileName, e1._CompressedSize,
+ e2._CompressedSize);
+ }
+ if (e1._UncompressedSize != e2._UncompressedSize)
+ {
+ isOk = false;
+ if (writer != null)
+ writer.WriteLine("{0}: mismatch in UncompressedSize (0x{1:X16} != 0x{2:X16})",
+ e1.FileName, e1._UncompressedSize,
+ e2._UncompressedSize);
+ }
+ if (e1.CompressionMethod != e2.CompressionMethod)
+ {
+ isOk = false;
+ if (writer != null)
+ writer.WriteLine("{0}: mismatch in CompressionMethod (0x{1:X4} != 0x{2:X4})",
+ e1.FileName, e1.CompressionMethod,
+ e2.CompressionMethod);
+ }
+ if (e1.Crc != e2.Crc)
+ {
+ isOk = false;
+ if (writer != null)
+ writer.WriteLine("{0}: mismatch in Crc32 (0x{1:X4} != 0x{2:X4})",
+ e1.FileName, e1.Crc,
+ e2.Crc);
+ }
+
+ // found a match, so stop the inside loop
+ break;
+ }
+ }
+ }
+
+ zip2.Dispose();
+ zip2 = null;
+
+ if (!isOk && fixIfNecessary)
+ {
+ string newFileName = Path.GetFileNameWithoutExtension(zipFileName);
+ newFileName = System.String.Format("{0}_fixed.zip", newFileName);
+ zip1.Save(newFileName);
+ }
+ }
+ finally
+ {
+ if (zip1 != null) zip1.Dispose();
+ if (zip2 != null) zip2.Dispose();
+ }
+ return isOk;
+ }
+
+
+
+ /// <summary>
+ /// Rewrite the directory within a zipfile.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// In cases of data error, the directory in a zip file can get out of
+ /// synch with the entries in the zip file. This method attempts to fix
+ /// the zip file if this has occurred.
+ /// </para>
+ ///
+ /// <para> This can take a long time for large zip files. </para>
+ ///
+ /// <para> This won't work if the zip file uses a non-standard
+ /// code page - neither IBM437 nor UTF-8. </para>
+ ///
+ /// <para>
+ /// This method is not supported in the Reduced or Compact Framework
+ /// versions of DotNetZip.
+ /// </para>
+ ///
+ /// <para>
+ /// Developers using COM can use the <see
+ /// cref="ComHelper.FixZipDirectory(String)">ComHelper.FixZipDirectory(String)</see>
+ /// method.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="zipFileName">The filename to of the zip file to fix.</param>
+ ///
+ /// <seealso cref="CheckZip(string)"/>
+ /// <seealso cref="CheckZip(string,bool,System.IO.TextWriter)"/>
+ internal static void FixZipDirectory(string zipFileName)
+ {
+ using (var zip = new ZipFile())
+ {
+ zip.FullScan = true;
+ zip.Initialize(zipFileName);
+ zip.Save(zipFileName);
+ }
+ }
+
+
+
+ /// <summary>
+ /// Verify the password on a zip file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Keep in mind that passwords in zipfiles are applied to
+ /// zip entries, not to the entire zip file. So testing a
+ /// zipfile for a particular password doesn't work in the
+ /// general case. On the other hand, it's often the case
+ /// that a single password will be used on all entries in a
+ /// zip file. This method works for that case.
+ /// </para>
+ /// <para>
+ /// There is no way to check a password without doing the
+ /// decryption. So this code decrypts and extracts the given
+ /// zipfile into <see cref="System.IO.Stream.Null"/>
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="zipFileName">The filename to of the zip file to fix.</param>
+ ///
+ /// <param name="password">The password to check.</param>
+ ///
+ /// <returns>a bool indicating whether the password matches.</returns>
+ internal static bool CheckZipPassword(string zipFileName, string password)
+ {
+ // workitem 13664
+ bool success = false;
+ try
+ {
+ using (ZipFile zip1 = ZipFile.Read(zipFileName))
+ {
+ foreach (var e in zip1)
+ {
+ if (!e.IsDirectory && e.UsesEncryption)
+ {
+ e.ExtractWithPassword(System.IO.Stream.Null, password);
+ }
+ }
+ }
+ success = true;
+ }
+ catch(Ionic.Zip.BadPasswordException) { }
+ return success;
+ }
+
+
+ /// <summary>
+ /// Provides a human-readable string with information about the ZipFile.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The information string contains 10 lines or so, about each ZipEntry,
+ /// describing whether encryption is in use, the compressed and uncompressed
+ /// length of the entry, the offset of the entry, and so on. As a result the
+ /// information string can be very long for zip files that contain many
+ /// entries.
+ /// </para>
+ /// <para>
+ /// This information is mostly useful for diagnostic purposes.
+ /// </para>
+ /// </remarks>
+ public string Info
+ {
+ get
+ {
+ var builder = new System.Text.StringBuilder();
+ builder.Append(string.Format(" ZipFile: {0}\n", this.Name));
+ if (!string.IsNullOrEmpty(this._Comment))
+ {
+ builder.Append(string.Format(" Comment: {0}\n", this._Comment));
+ }
+ if (this._versionMadeBy != 0)
+ {
+ builder.Append(string.Format(" version made by: 0x{0:X4}\n", this._versionMadeBy));
+ }
+ if (this._versionNeededToExtract != 0)
+ {
+ builder.Append(string.Format("needed to extract: 0x{0:X4}\n", this._versionNeededToExtract));
+ }
+
+ builder.Append(string.Format(" uses ZIP64: {0}\n", this.InputUsesZip64));
+
+ builder.Append(string.Format(" disk with CD: {0}\n", this._diskNumberWithCd));
+ if (this._OffsetOfCentralDirectory == 0xFFFFFFFF)
+ builder.Append(string.Format(" CD64 offset: 0x{0:X16}\n", this._OffsetOfCentralDirectory64));
+ else
+ builder.Append(string.Format(" CD offset: 0x{0:X8}\n", this._OffsetOfCentralDirectory));
+ builder.Append("\n");
+ foreach (ZipEntry entry in this._entries.Values)
+ {
+ builder.Append(entry.Info);
+ }
+ return builder.ToString();
+ }
+ }
+
+
+ }
+
+}
\ No newline at end of file
--- /dev/null
+// ZipFile.Events.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2008, 2009, 2011 Dino Chiesa .
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-July-09 08:42:35>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the methods for issuing events from the ZipFile class.
+//
+// ------------------------------------------------------------------
+//
+
+using System;
+using System.IO;
+
+namespace Ionic.Zip
+{
+ internal partial class ZipFile
+ {
+ private string ArchiveNameForEvent
+ {
+ get
+ {
+ return (_name != null) ? _name : "(stream)";
+ }
+ }
+
+ #region Save
+
+ /// <summary>
+ /// An event handler invoked when a Save() starts, before and after each
+ /// entry has been written to the archive, when a Save() completes, and
+ /// during other Save events.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Depending on the particular event, different properties on the <see
+ /// cref="SaveProgressEventArgs"/> parameter are set. The following
+ /// table summarizes the available EventTypes and the conditions under
+ /// which this event handler is invoked with a
+ /// <c>SaveProgressEventArgs</c> with the given EventType.
+ /// </para>
+ ///
+ /// <list type="table">
+ /// <listheader>
+ /// <term>value of EntryType</term>
+ /// <description>Meaning and conditions</description>
+ /// </listheader>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Saving_Started</term>
+ /// <description>Fired when ZipFile.Save() begins.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Saving_BeforeSaveEntry</term>
+ /// <description>
+ /// Fired within ZipFile.Save(), just before writing data for each
+ /// particular entry.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Saving_AfterSaveEntry</term>
+ /// <description>
+ /// Fired within ZipFile.Save(), just after having finished writing data
+ /// for each particular entry.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Saving_Completed</term>
+ /// <description>Fired when ZipFile.Save() has completed.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Saving_AfterSaveTempArchive</term>
+ /// <description>
+ /// Fired after the temporary file has been created. This happens only
+ /// when saving to a disk file. This event will not be invoked when
+ /// saving to a stream.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Saving_BeforeRenameTempArchive</term>
+ /// <description>
+ /// Fired just before renaming the temporary file to the permanent
+ /// location. This happens only when saving to a disk file. This event
+ /// will not be invoked when saving to a stream.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Saving_AfterRenameTempArchive</term>
+ /// <description>
+ /// Fired just after renaming the temporary file to the permanent
+ /// location. This happens only when saving to a disk file. This event
+ /// will not be invoked when saving to a stream.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Saving_AfterCompileSelfExtractor</term>
+ /// <description>
+ /// Fired after a self-extracting archive has finished compiling. This
+ /// EventType is used only within SaveSelfExtractor().
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Saving_BytesRead</term>
+ /// <description>
+ /// Set during the save of a particular entry, to update progress of the
+ /// Save(). When this EventType is set, the BytesTransferred is the
+ /// number of bytes that have been read from the source stream. The
+ /// TotalBytesToTransfer is the number of bytes in the uncompressed
+ /// file.
+ /// </description>
+ /// </item>
+ ///
+ /// </list>
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example uses an anonymous method to handle the
+ /// SaveProgress event, by updating a progress bar.
+ ///
+ /// <code lang="C#">
+ /// progressBar1.Value = 0;
+ /// progressBar1.Max = listbox1.Items.Count;
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// // listbox1 contains a list of filenames
+ /// zip.AddFiles(listbox1.Items);
+ ///
+ /// // do the progress bar:
+ /// zip.SaveProgress += (sender, e) => {
+ /// if (e.EventType == ZipProgressEventType.Saving_BeforeWriteEntry) {
+ /// progressBar1.PerformStep();
+ /// }
+ /// };
+ ///
+ /// zip.Save(fs);
+ /// }
+ /// </code>
+ /// </example>
+ ///
+ /// <example>
+ /// This example uses a named method as the
+ /// <c>SaveProgress</c> event handler, to update the user, in a
+ /// console-based application.
+ ///
+ /// <code lang="C#">
+ /// static bool justHadByteUpdate= false;
+ /// internal static void SaveProgress(object sender, SaveProgressEventArgs e)
+ /// {
+ /// if (e.EventType == ZipProgressEventType.Saving_Started)
+ /// Console.WriteLine("Saving: {0}", e.ArchiveName);
+ ///
+ /// else if (e.EventType == ZipProgressEventType.Saving_Completed)
+ /// {
+ /// justHadByteUpdate= false;
+ /// Console.WriteLine();
+ /// Console.WriteLine("Done: {0}", e.ArchiveName);
+ /// }
+ ///
+ /// else if (e.EventType == ZipProgressEventType.Saving_BeforeWriteEntry)
+ /// {
+ /// if (justHadByteUpdate)
+ /// Console.WriteLine();
+ /// Console.WriteLine(" Writing: {0} ({1}/{2})",
+ /// e.CurrentEntry.FileName, e.EntriesSaved, e.EntriesTotal);
+ /// justHadByteUpdate= false;
+ /// }
+ ///
+ /// else if (e.EventType == ZipProgressEventType.Saving_EntryBytesRead)
+ /// {
+ /// if (justHadByteUpdate)
+ /// Console.SetCursorPosition(0, Console.CursorTop);
+ /// Console.Write(" {0}/{1} ({2:N0}%)", e.BytesTransferred, e.TotalBytesToTransfer,
+ /// e.BytesTransferred / (0.01 * e.TotalBytesToTransfer ));
+ /// justHadByteUpdate= true;
+ /// }
+ /// }
+ ///
+ /// internal static ZipUp(string targetZip, string directory)
+ /// {
+ /// using (var zip = new ZipFile()) {
+ /// zip.SaveProgress += SaveProgress;
+ /// zip.AddDirectory(directory);
+ /// zip.Save(targetZip);
+ /// }
+ /// }
+ ///
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Public Sub ZipUp(ByVal targetZip As String, ByVal directory As String)
+ /// Using zip As ZipFile = New ZipFile
+ /// AddHandler zip.SaveProgress, AddressOf MySaveProgress
+ /// zip.AddDirectory(directory)
+ /// zip.Save(targetZip)
+ /// End Using
+ /// End Sub
+ ///
+ /// Private Shared justHadByteUpdate As Boolean = False
+ ///
+ /// Public Shared Sub MySaveProgress(ByVal sender As Object, ByVal e As SaveProgressEventArgs)
+ /// If (e.EventType Is ZipProgressEventType.Saving_Started) Then
+ /// Console.WriteLine("Saving: {0}", e.ArchiveName)
+ ///
+ /// ElseIf (e.EventType Is ZipProgressEventType.Saving_Completed) Then
+ /// justHadByteUpdate = False
+ /// Console.WriteLine
+ /// Console.WriteLine("Done: {0}", e.ArchiveName)
+ ///
+ /// ElseIf (e.EventType Is ZipProgressEventType.Saving_BeforeWriteEntry) Then
+ /// If justHadByteUpdate Then
+ /// Console.WriteLine
+ /// End If
+ /// Console.WriteLine(" Writing: {0} ({1}/{2})", e.CurrentEntry.FileName, e.EntriesSaved, e.EntriesTotal)
+ /// justHadByteUpdate = False
+ ///
+ /// ElseIf (e.EventType Is ZipProgressEventType.Saving_EntryBytesRead) Then
+ /// If justHadByteUpdate Then
+ /// Console.SetCursorPosition(0, Console.CursorTop)
+ /// End If
+ /// Console.Write(" {0}/{1} ({2:N0}%)", e.BytesTransferred, _
+ /// e.TotalBytesToTransfer, _
+ /// (CDbl(e.BytesTransferred) / (0.01 * e.TotalBytesToTransfer)))
+ /// justHadByteUpdate = True
+ /// End If
+ /// End Sub
+ /// </code>
+ /// </example>
+ ///
+ /// <example>
+ ///
+ /// This is a more complete example of using the SaveProgress
+ /// events in a Windows Forms application, with a
+ /// Thread object.
+ ///
+ /// <code lang="C#">
+ /// delegate void SaveEntryProgress(SaveProgressEventArgs e);
+ /// delegate void ButtonClick(object sender, EventArgs e);
+ ///
+ /// internal class WorkerOptions
+ /// {
+ /// public string ZipName;
+ /// public string Folder;
+ /// public string Encoding;
+ /// public string Comment;
+ /// public int ZipFlavor;
+ /// public Zip64Option Zip64;
+ /// }
+ ///
+ /// private int _progress2MaxFactor;
+ /// private bool _saveCanceled;
+ /// private long _totalBytesBeforeCompress;
+ /// private long _totalBytesAfterCompress;
+ /// private Thread _workerThread;
+ ///
+ ///
+ /// private void btnZipup_Click(object sender, EventArgs e)
+ /// {
+ /// KickoffZipup();
+ /// }
+ ///
+ /// private void btnCancel_Click(object sender, EventArgs e)
+ /// {
+ /// if (this.lblStatus.InvokeRequired)
+ /// {
+ /// this.lblStatus.Invoke(new ButtonClick(this.btnCancel_Click), new object[] { sender, e });
+ /// }
+ /// else
+ /// {
+ /// _saveCanceled = true;
+ /// lblStatus.Text = "Canceled...";
+ /// ResetState();
+ /// }
+ /// }
+ ///
+ /// private void KickoffZipup()
+ /// {
+ /// _folderName = tbDirName.Text;
+ ///
+ /// if (_folderName == null || _folderName == "") return;
+ /// if (this.tbZipName.Text == null || this.tbZipName.Text == "") return;
+ ///
+ /// // check for existence of the zip file:
+ /// if (System.IO.File.Exists(this.tbZipName.Text))
+ /// {
+ /// var dlgResult = MessageBox.Show(String.Format("The file you have specified ({0}) already exists." +
+ /// " Do you want to overwrite this file?", this.tbZipName.Text),
+ /// "Confirmation is Required", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
+ /// if (dlgResult != DialogResult.Yes) return;
+ /// System.IO.File.Delete(this.tbZipName.Text);
+ /// }
+ ///
+ /// _saveCanceled = false;
+ /// _nFilesCompleted = 0;
+ /// _totalBytesAfterCompress = 0;
+ /// _totalBytesBeforeCompress = 0;
+ /// this.btnOk.Enabled = false;
+ /// this.btnOk.Text = "Zipping...";
+ /// this.btnCancel.Enabled = true;
+ /// lblStatus.Text = "Zipping...";
+ ///
+ /// var options = new WorkerOptions
+ /// {
+ /// ZipName = this.tbZipName.Text,
+ /// Folder = _folderName,
+ /// Encoding = "ibm437"
+ /// };
+ ///
+ /// if (this.comboBox1.SelectedIndex != 0)
+ /// {
+ /// options.Encoding = this.comboBox1.SelectedItem.ToString();
+ /// }
+ ///
+ /// if (this.radioFlavorSfxCmd.Checked)
+ /// options.ZipFlavor = 2;
+ /// else if (this.radioFlavorSfxGui.Checked)
+ /// options.ZipFlavor = 1;
+ /// else options.ZipFlavor = 0;
+ ///
+ /// if (this.radioZip64AsNecessary.Checked)
+ /// options.Zip64 = Zip64Option.AsNecessary;
+ /// else if (this.radioZip64Always.Checked)
+ /// options.Zip64 = Zip64Option.Always;
+ /// else options.Zip64 = Zip64Option.Never;
+ ///
+ /// options.Comment = String.Format("Encoding:{0} || Flavor:{1} || ZIP64:{2}\r\nCreated at {3} || {4}\r\n",
+ /// options.Encoding,
+ /// FlavorToString(options.ZipFlavor),
+ /// options.Zip64.ToString(),
+ /// System.DateTime.Now.ToString("yyyy-MMM-dd HH:mm:ss"),
+ /// this.Text);
+ ///
+ /// if (this.tbComment.Text != TB_COMMENT_NOTE)
+ /// options.Comment += this.tbComment.Text;
+ ///
+ /// _workerThread = new Thread(this.DoSave);
+ /// _workerThread.Name = "Zip Saver thread";
+ /// _workerThread.Start(options);
+ /// this.Cursor = Cursors.WaitCursor;
+ /// }
+ ///
+ ///
+ /// private void DoSave(Object p)
+ /// {
+ /// WorkerOptions options = p as WorkerOptions;
+ /// try
+ /// {
+ /// using (var zip1 = new ZipFile())
+ /// {
+ /// zip1.ProvisionalAlternateEncoding = System.Text.Encoding.GetEncoding(options.Encoding);
+ /// zip1.Comment = options.Comment;
+ /// zip1.AddDirectory(options.Folder);
+ /// _entriesToZip = zip1.EntryFileNames.Count;
+ /// SetProgressBars();
+ /// zip1.SaveProgress += this.zip1_SaveProgress;
+ ///
+ /// zip1.UseZip64WhenSaving = options.Zip64;
+ ///
+ /// if (options.ZipFlavor == 1)
+ /// zip1.SaveSelfExtractor(options.ZipName, SelfExtractorFlavor.WinFormsApplication);
+ /// else if (options.ZipFlavor == 2)
+ /// zip1.SaveSelfExtractor(options.ZipName, SelfExtractorFlavor.ConsoleApplication);
+ /// else
+ /// zip1.Save(options.ZipName);
+ /// }
+ /// }
+ /// catch (System.Exception exc1)
+ /// {
+ /// MessageBox.Show(String.Format("Exception while zipping: {0}", exc1.Message));
+ /// btnCancel_Click(null, null);
+ /// }
+ /// }
+ ///
+ ///
+ ///
+ /// void zip1_SaveProgress(object sender, SaveProgressEventArgs e)
+ /// {
+ /// switch (e.EventType)
+ /// {
+ /// case ZipProgressEventType.Saving_AfterWriteEntry:
+ /// StepArchiveProgress(e);
+ /// break;
+ /// case ZipProgressEventType.Saving_EntryBytesRead:
+ /// StepEntryProgress(e);
+ /// break;
+ /// case ZipProgressEventType.Saving_Completed:
+ /// SaveCompleted();
+ /// break;
+ /// case ZipProgressEventType.Saving_AfterSaveTempArchive:
+ /// // this event only occurs when saving an SFX file
+ /// TempArchiveSaved();
+ /// break;
+ /// }
+ /// if (_saveCanceled)
+ /// e.Cancel = true;
+ /// }
+ ///
+ ///
+ ///
+ /// private void StepArchiveProgress(SaveProgressEventArgs e)
+ /// {
+ /// if (this.progressBar1.InvokeRequired)
+ /// {
+ /// this.progressBar1.Invoke(new SaveEntryProgress(this.StepArchiveProgress), new object[] { e });
+ /// }
+ /// else
+ /// {
+ /// if (!_saveCanceled)
+ /// {
+ /// _nFilesCompleted++;
+ /// this.progressBar1.PerformStep();
+ /// _totalBytesAfterCompress += e.CurrentEntry.CompressedSize;
+ /// _totalBytesBeforeCompress += e.CurrentEntry.UncompressedSize;
+ ///
+ /// // reset the progress bar for the entry:
+ /// this.progressBar2.Value = this.progressBar2.Maximum = 1;
+ ///
+ /// this.Update();
+ /// }
+ /// }
+ /// }
+ ///
+ ///
+ /// private void StepEntryProgress(SaveProgressEventArgs e)
+ /// {
+ /// if (this.progressBar2.InvokeRequired)
+ /// {
+ /// this.progressBar2.Invoke(new SaveEntryProgress(this.StepEntryProgress), new object[] { e });
+ /// }
+ /// else
+ /// {
+ /// if (!_saveCanceled)
+ /// {
+ /// if (this.progressBar2.Maximum == 1)
+ /// {
+ /// // reset
+ /// Int64 max = e.TotalBytesToTransfer;
+ /// _progress2MaxFactor = 0;
+ /// while (max > System.Int32.MaxValue)
+ /// {
+ /// max /= 2;
+ /// _progress2MaxFactor++;
+ /// }
+ /// this.progressBar2.Maximum = (int)max;
+ /// lblStatus.Text = String.Format("{0} of {1} files...({2})",
+ /// _nFilesCompleted + 1, _entriesToZip, e.CurrentEntry.FileName);
+ /// }
+ ///
+ /// int xferred = e.BytesTransferred >> _progress2MaxFactor;
+ ///
+ /// this.progressBar2.Value = (xferred >= this.progressBar2.Maximum)
+ /// ? this.progressBar2.Maximum
+ /// : xferred;
+ ///
+ /// this.Update();
+ /// }
+ /// }
+ /// }
+ ///
+ /// private void SaveCompleted()
+ /// {
+ /// if (this.lblStatus.InvokeRequired)
+ /// {
+ /// this.lblStatus.Invoke(new MethodInvoker(this.SaveCompleted));
+ /// }
+ /// else
+ /// {
+ /// lblStatus.Text = String.Format("Done, Compressed {0} files, {1:N0}% of original.",
+ /// _nFilesCompleted, (100.00 * _totalBytesAfterCompress) / _totalBytesBeforeCompress);
+ /// ResetState();
+ /// }
+ /// }
+ ///
+ /// private void ResetState()
+ /// {
+ /// this.btnCancel.Enabled = false;
+ /// this.btnOk.Enabled = true;
+ /// this.btnOk.Text = "Zip it!";
+ /// this.progressBar1.Value = 0;
+ /// this.progressBar2.Value = 0;
+ /// this.Cursor = Cursors.Default;
+ /// if (!_workerThread.IsAlive)
+ /// _workerThread.Join();
+ /// }
+ /// </code>
+ ///
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.ReadProgress"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddProgress"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.ExtractProgress"/>
+ public event EventHandler<SaveProgressEventArgs> SaveProgress;
+
+
+ internal bool OnSaveBlock(ZipEntry entry, Int64 bytesXferred, Int64 totalBytesToXfer)
+ {
+ EventHandler<SaveProgressEventArgs> sp = SaveProgress;
+ if (sp != null)
+ {
+ var e = SaveProgressEventArgs.ByteUpdate(ArchiveNameForEvent, entry,
+ bytesXferred, totalBytesToXfer);
+ sp(this, e);
+ if (e.Cancel)
+ _saveOperationCanceled = true;
+ }
+ return _saveOperationCanceled;
+ }
+
+ private void OnSaveEntry(int current, ZipEntry entry, bool before)
+ {
+ EventHandler<SaveProgressEventArgs> sp = SaveProgress;
+ if (sp != null)
+ {
+ var e = new SaveProgressEventArgs(ArchiveNameForEvent, before, _entries.Count, current, entry);
+ sp(this, e);
+ if (e.Cancel)
+ _saveOperationCanceled = true;
+ }
+ }
+
+ private void OnSaveEvent(ZipProgressEventType eventFlavor)
+ {
+ EventHandler<SaveProgressEventArgs> sp = SaveProgress;
+ if (sp != null)
+ {
+ var e = new SaveProgressEventArgs(ArchiveNameForEvent, eventFlavor);
+ sp(this, e);
+ if (e.Cancel)
+ _saveOperationCanceled = true;
+ }
+ }
+
+ private void OnSaveStarted()
+ {
+ EventHandler<SaveProgressEventArgs> sp = SaveProgress;
+ if (sp != null)
+ {
+ var e = SaveProgressEventArgs.Started(ArchiveNameForEvent);
+ sp(this, e);
+ if (e.Cancel)
+ _saveOperationCanceled = true;
+ }
+ }
+ private void OnSaveCompleted()
+ {
+ EventHandler<SaveProgressEventArgs> sp = SaveProgress;
+ if (sp != null)
+ {
+ var e = SaveProgressEventArgs.Completed(ArchiveNameForEvent);
+ sp(this, e);
+ }
+ }
+ #endregion
+
+
+ #region Read
+ /// <summary>
+ /// An event handler invoked before, during, and after the reading of a zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Depending on the particular event being signaled, different properties on the
+ /// <see cref="ReadProgressEventArgs"/> parameter are set. The following table
+ /// summarizes the available EventTypes and the conditions under which this
+ /// event handler is invoked with a <c>ReadProgressEventArgs</c> with the given EventType.
+ /// </para>
+ ///
+ /// <list type="table">
+ /// <listheader>
+ /// <term>value of EntryType</term>
+ /// <description>Meaning and conditions</description>
+ /// </listheader>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Reading_Started</term>
+ /// <description>Fired just as ZipFile.Read() begins. Meaningful properties: ArchiveName.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Reading_Completed</term>
+ /// <description>Fired when ZipFile.Read() has completed. Meaningful properties: ArchiveName.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Reading_ArchiveBytesRead</term>
+ /// <description>Fired while reading, updates the number of bytes read for the entire archive.
+ /// Meaningful properties: ArchiveName, CurrentEntry, BytesTransferred, TotalBytesToTransfer.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Reading_BeforeReadEntry</term>
+ /// <description>Indicates an entry is about to be read from the archive.
+ /// Meaningful properties: ArchiveName, EntriesTotal.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Reading_AfterReadEntry</term>
+ /// <description>Indicates an entry has just been read from the archive.
+ /// Meaningful properties: ArchiveName, EntriesTotal, CurrentEntry.
+ /// </description>
+ /// </item>
+ ///
+ /// </list>
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.SaveProgress"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddProgress"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.ExtractProgress"/>
+ public event EventHandler<ReadProgressEventArgs> ReadProgress;
+
+ private void OnReadStarted()
+ {
+ EventHandler<ReadProgressEventArgs> rp = ReadProgress;
+ if (rp != null)
+ {
+ var e = ReadProgressEventArgs.Started(ArchiveNameForEvent);
+ rp(this, e);
+ }
+ }
+
+ private void OnReadCompleted()
+ {
+ EventHandler<ReadProgressEventArgs> rp = ReadProgress;
+ if (rp != null)
+ {
+ var e = ReadProgressEventArgs.Completed(ArchiveNameForEvent);
+ rp(this, e);
+ }
+ }
+
+ internal void OnReadBytes(ZipEntry entry)
+ {
+ EventHandler<ReadProgressEventArgs> rp = ReadProgress;
+ if (rp != null)
+ {
+ var e = ReadProgressEventArgs.ByteUpdate(ArchiveNameForEvent,
+ entry,
+ ReadStream.Position,
+ LengthOfReadStream);
+ rp(this, e);
+ }
+ }
+
+ internal void OnReadEntry(bool before, ZipEntry entry)
+ {
+ EventHandler<ReadProgressEventArgs> rp = ReadProgress;
+ if (rp != null)
+ {
+ ReadProgressEventArgs e = (before)
+ ? ReadProgressEventArgs.Before(ArchiveNameForEvent, _entries.Count)
+ : ReadProgressEventArgs.After(ArchiveNameForEvent, entry, _entries.Count);
+ rp(this, e);
+ }
+ }
+
+ private Int64 _lengthOfReadStream = -99;
+ private Int64 LengthOfReadStream
+ {
+ get
+ {
+ if (_lengthOfReadStream == -99)
+ {
+ _lengthOfReadStream = (_ReadStreamIsOurs)
+ ? SharedUtilities.GetFileLength(_name)
+ : -1L;
+ }
+ return _lengthOfReadStream;
+ }
+ }
+ #endregion
+
+
+ #region Extract
+ /// <summary>
+ /// An event handler invoked before, during, and after extraction of
+ /// entries in the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Depending on the particular event, different properties on the <see
+ /// cref="ExtractProgressEventArgs"/> parameter are set. The following
+ /// table summarizes the available EventTypes and the conditions under
+ /// which this event handler is invoked with a
+ /// <c>ExtractProgressEventArgs</c> with the given EventType.
+ /// </para>
+ ///
+ /// <list type="table">
+ /// <listheader>
+ /// <term>value of EntryType</term>
+ /// <description>Meaning and conditions</description>
+ /// </listheader>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Extracting_BeforeExtractAll</term>
+ /// <description>
+ /// Set when ExtractAll() begins. The ArchiveName, Overwrite, and
+ /// ExtractLocation properties are meaningful.</description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Extracting_AfterExtractAll</term>
+ /// <description>
+ /// Set when ExtractAll() has completed. The ArchiveName, Overwrite,
+ /// and ExtractLocation properties are meaningful.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Extracting_BeforeExtractEntry</term>
+ /// <description>
+ /// Set when an Extract() on an entry in the ZipFile has begun.
+ /// Properties that are meaningful: ArchiveName, EntriesTotal,
+ /// CurrentEntry, Overwrite, ExtractLocation, EntriesExtracted.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Extracting_AfterExtractEntry</term>
+ /// <description>
+ /// Set when an Extract() on an entry in the ZipFile has completed.
+ /// Properties that are meaningful: ArchiveName, EntriesTotal,
+ /// CurrentEntry, Overwrite, ExtractLocation, EntriesExtracted.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Extracting_EntryBytesWritten</term>
+ /// <description>
+ /// Set within a call to Extract() on an entry in the ZipFile, as data
+ /// is extracted for the entry. Properties that are meaningful:
+ /// ArchiveName, CurrentEntry, BytesTransferred, TotalBytesToTransfer.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>ZipProgressEventType.Extracting_ExtractEntryWouldOverwrite</term>
+ /// <description>
+ /// Set within a call to Extract() on an entry in the ZipFile, when the
+ /// extraction would overwrite an existing file. This event type is used
+ /// only when <c>ExtractExistingFileAction</c> on the <c>ZipFile</c> or
+ /// <c>ZipEntry</c> is set to <c>InvokeExtractProgressEvent</c>.
+ /// </description>
+ /// </item>
+ ///
+ /// </list>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// <code>
+ /// private static bool justHadByteUpdate = false;
+ /// internal static void ExtractProgress(object sender, ExtractProgressEventArgs e)
+ /// {
+ /// if(e.EventType == ZipProgressEventType.Extracting_EntryBytesWritten)
+ /// {
+ /// if (justHadByteUpdate)
+ /// Console.SetCursorPosition(0, Console.CursorTop);
+ ///
+ /// Console.Write(" {0}/{1} ({2:N0}%)", e.BytesTransferred, e.TotalBytesToTransfer,
+ /// e.BytesTransferred / (0.01 * e.TotalBytesToTransfer ));
+ /// justHadByteUpdate = true;
+ /// }
+ /// else if(e.EventType == ZipProgressEventType.Extracting_BeforeExtractEntry)
+ /// {
+ /// if (justHadByteUpdate)
+ /// Console.WriteLine();
+ /// Console.WriteLine("Extracting: {0}", e.CurrentEntry.FileName);
+ /// justHadByteUpdate= false;
+ /// }
+ /// }
+ ///
+ /// internal static ExtractZip(string zipToExtract, string directory)
+ /// {
+ /// string TargetDirectory= "extract";
+ /// using (var zip = ZipFile.Read(zipToExtract)) {
+ /// zip.ExtractProgress += ExtractProgress;
+ /// foreach (var e in zip1)
+ /// {
+ /// e.Extract(TargetDirectory, true);
+ /// }
+ /// }
+ /// }
+ ///
+ /// </code>
+ /// <code lang="VB">
+ /// Public Shared Sub Main(ByVal args As String())
+ /// Dim ZipToUnpack As String = "C1P3SML.zip"
+ /// Dim TargetDir As String = "ExtractTest_Extract"
+ /// Console.WriteLine("Extracting file {0} to {1}", ZipToUnpack, TargetDir)
+ /// Using zip1 As ZipFile = ZipFile.Read(ZipToUnpack)
+ /// AddHandler zip1.ExtractProgress, AddressOf MyExtractProgress
+ /// Dim e As ZipEntry
+ /// For Each e In zip1
+ /// e.Extract(TargetDir, True)
+ /// Next
+ /// End Using
+ /// End Sub
+ ///
+ /// Private Shared justHadByteUpdate As Boolean = False
+ ///
+ /// Public Shared Sub MyExtractProgress(ByVal sender As Object, ByVal e As ExtractProgressEventArgs)
+ /// If (e.EventType = ZipProgressEventType.Extracting_EntryBytesWritten) Then
+ /// If ExtractTest.justHadByteUpdate Then
+ /// Console.SetCursorPosition(0, Console.CursorTop)
+ /// End If
+ /// Console.Write(" {0}/{1} ({2:N0}%)", e.BytesTransferred, e.TotalBytesToTransfer, (CDbl(e.BytesTransferred) / (0.01 * e.TotalBytesToTransfer)))
+ /// ExtractTest.justHadByteUpdate = True
+ /// ElseIf (e.EventType = ZipProgressEventType.Extracting_BeforeExtractEntry) Then
+ /// If ExtractTest.justHadByteUpdate Then
+ /// Console.WriteLine
+ /// End If
+ /// Console.WriteLine("Extracting: {0}", e.CurrentEntry.FileName)
+ /// ExtractTest.justHadByteUpdate = False
+ /// End If
+ /// End Sub
+ /// </code>
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.SaveProgress"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.ReadProgress"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.AddProgress"/>
+ public event EventHandler<ExtractProgressEventArgs> ExtractProgress;
+
+
+
+ private void OnExtractEntry(int current, bool before, ZipEntry currentEntry, string path)
+ {
+ EventHandler<ExtractProgressEventArgs> ep = ExtractProgress;
+ if (ep != null)
+ {
+ var e = new ExtractProgressEventArgs(ArchiveNameForEvent, before, _entries.Count, current, currentEntry, path);
+ ep(this, e);
+ if (e.Cancel)
+ _extractOperationCanceled = true;
+ }
+ }
+
+
+ // Can be called from within ZipEntry._ExtractOne.
+ internal bool OnExtractBlock(ZipEntry entry, Int64 bytesWritten, Int64 totalBytesToWrite)
+ {
+ EventHandler<ExtractProgressEventArgs> ep = ExtractProgress;
+ if (ep != null)
+ {
+ var e = ExtractProgressEventArgs.ByteUpdate(ArchiveNameForEvent, entry,
+ bytesWritten, totalBytesToWrite);
+ ep(this, e);
+ if (e.Cancel)
+ _extractOperationCanceled = true;
+ }
+ return _extractOperationCanceled;
+ }
+
+
+ // Can be called from within ZipEntry.InternalExtract.
+ internal bool OnSingleEntryExtract(ZipEntry entry, string path, bool before)
+ {
+ EventHandler<ExtractProgressEventArgs> ep = ExtractProgress;
+ if (ep != null)
+ {
+ var e = (before)
+ ? ExtractProgressEventArgs.BeforeExtractEntry(ArchiveNameForEvent, entry, path)
+ : ExtractProgressEventArgs.AfterExtractEntry(ArchiveNameForEvent, entry, path);
+ ep(this, e);
+ if (e.Cancel)
+ _extractOperationCanceled = true;
+ }
+ return _extractOperationCanceled;
+ }
+
+ internal bool OnExtractExisting(ZipEntry entry, string path)
+ {
+ EventHandler<ExtractProgressEventArgs> ep = ExtractProgress;
+ if (ep != null)
+ {
+ var e = ExtractProgressEventArgs.ExtractExisting(ArchiveNameForEvent, entry, path);
+ ep(this, e);
+ if (e.Cancel)
+ _extractOperationCanceled = true;
+ }
+ return _extractOperationCanceled;
+ }
+
+
+ private void OnExtractAllCompleted(string path)
+ {
+ EventHandler<ExtractProgressEventArgs> ep = ExtractProgress;
+ if (ep != null)
+ {
+ var e = ExtractProgressEventArgs.ExtractAllCompleted(ArchiveNameForEvent,
+ path );
+ ep(this, e);
+ }
+ }
+
+
+ private void OnExtractAllStarted(string path)
+ {
+ EventHandler<ExtractProgressEventArgs> ep = ExtractProgress;
+ if (ep != null)
+ {
+ var e = ExtractProgressEventArgs.ExtractAllStarted(ArchiveNameForEvent,
+ path );
+ ep(this, e);
+ }
+ }
+
+
+ #endregion
+
+
+
+ #region Add
+ /// <summary>
+ /// An event handler invoked before, during, and after Adding entries to a zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Adding a large number of entries to a zip file can take a long
+ /// time. For example, when calling <see cref="AddDirectory(string)"/> on a
+ /// directory that contains 50,000 files, it could take 3 minutes or so.
+ /// This event handler allws an application to track the progress of the Add
+ /// operation, and to optionally cancel a lengthy Add operation.
+ /// </remarks>
+ ///
+ /// <example>
+ /// <code lang="C#">
+ ///
+ /// int _numEntriesToAdd= 0;
+ /// int _numEntriesAdded= 0;
+ /// void AddProgressHandler(object sender, AddProgressEventArgs e)
+ /// {
+ /// switch (e.EventType)
+ /// {
+ /// case ZipProgressEventType.Adding_Started:
+ /// Console.WriteLine("Adding files to the zip...");
+ /// break;
+ /// case ZipProgressEventType.Adding_AfterAddEntry:
+ /// _numEntriesAdded++;
+ /// Console.WriteLine(String.Format("Adding file {0}/{1} :: {2}",
+ /// _numEntriesAdded, _numEntriesToAdd, e.CurrentEntry.FileName));
+ /// break;
+ /// case ZipProgressEventType.Adding_Completed:
+ /// Console.WriteLine("Added all files");
+ /// break;
+ /// }
+ /// }
+ ///
+ /// void CreateTheZip()
+ /// {
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// zip.AddProgress += AddProgressHandler;
+ /// zip.AddDirectory(System.IO.Path.GetFileName(DirToZip));
+ /// zip.Save(ZipFileToCreate);
+ /// }
+ /// }
+ ///
+ /// </code>
+ ///
+ /// <code lang="VB">
+ ///
+ /// Private Sub AddProgressHandler(ByVal sender As Object, ByVal e As AddProgressEventArgs)
+ /// Select Case e.EventType
+ /// Case ZipProgressEventType.Adding_Started
+ /// Console.WriteLine("Adding files to the zip...")
+ /// Exit Select
+ /// Case ZipProgressEventType.Adding_AfterAddEntry
+ /// Console.WriteLine(String.Format("Adding file {0}", e.CurrentEntry.FileName))
+ /// Exit Select
+ /// Case ZipProgressEventType.Adding_Completed
+ /// Console.WriteLine("Added all files")
+ /// Exit Select
+ /// End Select
+ /// End Sub
+ ///
+ /// Sub CreateTheZip()
+ /// Using zip as ZipFile = New ZipFile
+ /// AddHandler zip.AddProgress, AddressOf AddProgressHandler
+ /// zip.AddDirectory(System.IO.Path.GetFileName(DirToZip))
+ /// zip.Save(ZipFileToCreate);
+ /// End Using
+ /// End Sub
+ ///
+ /// </code>
+ ///
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.SaveProgress"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.ReadProgress"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.ExtractProgress"/>
+ public event EventHandler<AddProgressEventArgs> AddProgress;
+
+ private void OnAddStarted()
+ {
+ EventHandler<AddProgressEventArgs> ap = AddProgress;
+ if (ap != null)
+ {
+ var e = AddProgressEventArgs.Started(ArchiveNameForEvent);
+ ap(this, e);
+ if (e.Cancel) // workitem 13371
+ _addOperationCanceled = true;
+ }
+ }
+
+ private void OnAddCompleted()
+ {
+ EventHandler<AddProgressEventArgs> ap = AddProgress;
+ if (ap != null)
+ {
+ var e = AddProgressEventArgs.Completed(ArchiveNameForEvent);
+ ap(this, e);
+ }
+ }
+
+ internal void AfterAddEntry(ZipEntry entry)
+ {
+ EventHandler<AddProgressEventArgs> ap = AddProgress;
+ if (ap != null)
+ {
+ var e = AddProgressEventArgs.AfterEntry(ArchiveNameForEvent, entry, _entries.Count);
+ ap(this, e);
+ if (e.Cancel) // workitem 13371
+ _addOperationCanceled = true;
+ }
+ }
+
+ #endregion
+
+
+
+ #region Error
+ /// <summary>
+ /// An event that is raised when an error occurs during open or read of files
+ /// while saving a zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Errors can occur as a file is being saved to the zip archive. For
+ /// example, the File.Open may fail, or a File.Read may fail, because of
+ /// lock conflicts or other reasons. If you add a handler to this event,
+ /// you can handle such errors in your own code. If you don't add a
+ /// handler, the library will throw an exception if it encounters an I/O
+ /// error during a call to <c>Save()</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// Setting a handler implicitly sets <see cref="ZipFile.ZipErrorAction"/> to
+ /// <c>ZipErrorAction.InvokeErrorEvent</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// The handler you add applies to all <see cref="ZipEntry"/> items that are
+ /// subsequently added to the <c>ZipFile</c> instance. If you set this
+ /// property after you have added items to the <c>ZipFile</c>, but before you
+ /// have called <c>Save()</c>, errors that occur while saving those items
+ /// will not cause the error handler to be invoked.
+ /// </para>
+ ///
+ /// <para>
+ /// If you want to handle any errors that occur with any entry in the zip
+ /// file using the same error handler, then add your error handler once,
+ /// before adding any entries to the zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// In the error handler method, you need to set the <see
+ /// cref="ZipEntry.ZipErrorAction"/> property on the
+ /// <c>ZipErrorEventArgs.CurrentEntry</c>. This communicates back to
+ /// DotNetZip what you would like to do with this particular error. Within
+ /// an error handler, if you set the <c>ZipEntry.ZipErrorAction</c> property
+ /// on the <c>ZipEntry</c> to <c>ZipErrorAction.InvokeErrorEvent</c> or if
+ /// you don't set it at all, the library will throw the exception. (It is the
+ /// same as if you had set the <c>ZipEntry.ZipErrorAction</c> property on the
+ /// <c>ZipEntry</c> to <c>ZipErrorAction.Throw</c>.) If you set the
+ /// <c>ZipErrorEventArgs.Cancel</c> to true, the entire <c>Save()</c> will be
+ /// canceled.
+ /// </para>
+ ///
+ /// <para>
+ /// In the case that you use <c>ZipErrorAction.Skip</c>, implying that
+ /// you want to skip the entry for which there's been an error, DotNetZip
+ /// tries to seek backwards in the output stream, and truncate all bytes
+ /// written on behalf of that particular entry. This works only if the
+ /// output stream is seekable. It will not work, for example, when using
+ /// ASPNET's Response.OutputStream.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to use an event handler to handle
+ /// errors during save of the zip file.
+ /// <code lang="C#">
+ ///
+ /// internal static void MyZipError(object sender, ZipErrorEventArgs e)
+ /// {
+ /// Console.WriteLine("Error saving {0}...", e.FileName);
+ /// Console.WriteLine(" Exception: {0}", e.exception);
+ /// ZipEntry entry = e.CurrentEntry;
+ /// string response = null;
+ /// // Ask the user whether he wants to skip this error or not
+ /// do
+ /// {
+ /// Console.Write("Retry, Skip, Throw, or Cancel ? (R/S/T/C) ");
+ /// response = Console.ReadLine();
+ /// Console.WriteLine();
+ ///
+ /// } while (response != null &&
+ /// response[0]!='S' && response[0]!='s' &&
+ /// response[0]!='R' && response[0]!='r' &&
+ /// response[0]!='T' && response[0]!='t' &&
+ /// response[0]!='C' && response[0]!='c');
+ ///
+ /// e.Cancel = (response[0]=='C' || response[0]=='c');
+ ///
+ /// if (response[0]=='S' || response[0]=='s')
+ /// entry.ZipErrorAction = ZipErrorAction.Skip;
+ /// else if (response[0]=='R' || response[0]=='r')
+ /// entry.ZipErrorAction = ZipErrorAction.Retry;
+ /// else if (response[0]=='T' || response[0]=='t')
+ /// entry.ZipErrorAction = ZipErrorAction.Throw;
+ /// }
+ ///
+ /// public void SaveTheFile()
+ /// {
+ /// string directoryToZip = "fodder";
+ /// string directoryInArchive = "files";
+ /// string zipFileToCreate = "Archive.zip";
+ /// using (var zip = new ZipFile())
+ /// {
+ /// // set the event handler before adding any entries
+ /// zip.ZipError += MyZipError;
+ /// zip.AddDirectory(directoryToZip, directoryInArchive);
+ /// zip.Save(zipFileToCreate);
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Private Sub MyZipError(ByVal sender As Object, ByVal e As Ionic.Zip.ZipErrorEventArgs)
+ /// ' At this point, the application could prompt the user for an action to take.
+ /// ' But in this case, this application will simply automatically skip the file, in case of error.
+ /// Console.WriteLine("Zip Error, entry {0}", e.CurrentEntry.FileName)
+ /// Console.WriteLine(" Exception: {0}", e.exception)
+ /// ' set the desired ZipErrorAction on the CurrentEntry to communicate that to DotNetZip
+ /// e.CurrentEntry.ZipErrorAction = Zip.ZipErrorAction.Skip
+ /// End Sub
+ ///
+ /// Public Sub SaveTheFile()
+ /// Dim directoryToZip As String = "fodder"
+ /// Dim directoryInArchive As String = "files"
+ /// Dim zipFileToCreate as String = "Archive.zip"
+ /// Using zipArchive As ZipFile = New ZipFile
+ /// ' set the event handler before adding any entries
+ /// AddHandler zipArchive.ZipError, AddressOf MyZipError
+ /// zipArchive.AddDirectory(directoryToZip, directoryInArchive)
+ /// zipArchive.Save(zipFileToCreate)
+ /// End Using
+ /// End Sub
+ ///
+ /// </code>
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.ZipErrorAction"/>
+ public event EventHandler<ZipErrorEventArgs> ZipError;
+
+ internal bool OnZipErrorSaving(ZipEntry entry, Exception exc)
+ {
+ if (ZipError != null)
+ {
+ lock (LOCK)
+ {
+ var e = ZipErrorEventArgs.Saving(this.Name, entry, exc);
+ ZipError(this, e);
+ if (e.Cancel)
+ _saveOperationCanceled = true;
+ }
+ }
+ return _saveOperationCanceled;
+ }
+ #endregion
+
+ }
+}
--- /dev/null
+// ZipFile.Extract.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-July-31 14:45:18>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the methods for Extract operations on zip files.
+//
+// ------------------------------------------------------------------
+//
+
+
+using System;
+using System.IO;
+using System.Collections.Generic;
+
+namespace Ionic.Zip
+{
+
+ internal partial class ZipFile
+ {
+
+ /// <summary>
+ /// Extracts all of the items in the zip archive, to the specified path in the
+ /// filesystem. The path can be relative or fully-qualified.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method will extract all entries in the <c>ZipFile</c> to the
+ /// specified path.
+ /// </para>
+ ///
+ /// <para>
+ /// If an extraction of a file from the zip archive would overwrite an
+ /// existing file in the filesystem, the action taken is dictated by the
+ /// ExtractExistingFile property, which overrides any setting you may have
+ /// made on individual ZipEntry instances. By default, if you have not
+ /// set that property on the <c>ZipFile</c> instance, the entry will not
+ /// be extracted, the existing file will not be overwritten and an
+ /// exception will be thrown. To change this, set the property, or use the
+ /// <see cref="ZipFile.ExtractAll(string,
+ /// Ionic.Zip.ExtractExistingFileAction)" /> overload that allows you to
+ /// specify an ExtractExistingFileAction parameter.
+ /// </para>
+ ///
+ /// <para>
+ /// The action to take when an extract would overwrite an existing file
+ /// applies to all entries. If you want to set this on a per-entry basis,
+ /// then you must use one of the <see
+ /// cref="ZipEntry.Extract()">ZipEntry.Extract</see> methods.
+ /// </para>
+ ///
+ /// <para>
+ /// This method will send verbose output messages to the <see
+ /// cref="StatusMessageTextWriter"/>, if it is set on the <c>ZipFile</c>
+ /// instance.
+ /// </para>
+ ///
+ /// <para>
+ /// You may wish to take advantage of the <c>ExtractProgress</c> event.
+ /// </para>
+ ///
+ /// <para>
+ /// About timestamps: When extracting a file entry from a zip archive, the
+ /// extracted file gets the last modified time of the entry as stored in
+ /// the archive. The archive may also store extended file timestamp
+ /// information, including last accessed and created times. If these are
+ /// present in the <c>ZipEntry</c>, then the extracted file will also get
+ /// these times.
+ /// </para>
+ ///
+ /// <para>
+ /// A Directory entry is somewhat different. It will get the times as
+ /// described for a file entry, but, if there are file entries in the zip
+ /// archive that, when extracted, appear in the just-created directory,
+ /// then when those file entries are extracted, the last modified and last
+ /// accessed times of the directory will change, as a side effect. The
+ /// result is that after an extraction of a directory and a number of
+ /// files within the directory, the last modified and last accessed
+ /// timestamps on the directory will reflect the time that the last file
+ /// was extracted into the directory, rather than the time stored in the
+ /// zip archive for the directory.
+ /// </para>
+ ///
+ /// <para>
+ /// To compensate, when extracting an archive with <c>ExtractAll</c>,
+ /// DotNetZip will extract all the file and directory entries as described
+ /// above, but it will then make a second pass on the directories, and
+ /// reset the times on the directories to reflect what is stored in the
+ /// zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// This compensation is performed only within the context of an
+ /// <c>ExtractAll</c>. If you call <c>ZipEntry.Extract</c> on a directory
+ /// entry, the timestamps on directory in the filesystem will reflect the
+ /// times stored in the zip. If you then call <c>ZipEntry.Extract</c> on
+ /// a file entry, which is extracted into the directory, the timestamps on
+ /// the directory will be updated to the current time.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example extracts all the entries in a zip archive file, to the
+ /// specified target directory. The extraction will overwrite any
+ /// existing files silently.
+ ///
+ /// <code>
+ /// String TargetDirectory= "unpack";
+ /// using(ZipFile zip= ZipFile.Read(ZipFileToExtract))
+ /// {
+ /// zip.ExtractExistingFile= ExtractExistingFileAction.OverwriteSilently;
+ /// zip.ExtractAll(TargetDirectory);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Dim TargetDirectory As String = "unpack"
+ /// Using zip As ZipFile = ZipFile.Read(ZipFileToExtract)
+ /// zip.ExtractExistingFile= ExtractExistingFileAction.OverwriteSilently
+ /// zip.ExtractAll(TargetDirectory)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.ExtractProgress"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.ExtractExistingFile"/>
+ ///
+ /// <param name="path">
+ /// The path to which the contents of the zipfile will be extracted.
+ /// The path can be relative or fully-qualified.
+ /// </param>
+ ///
+ public void ExtractAll(string path)
+ {
+ _InternalExtractAll(path, true);
+ }
+
+
+
+ /// <summary>
+ /// Extracts all of the items in the zip archive, to the specified path in the
+ /// filesystem, using the specified behavior when extraction would overwrite an
+ /// existing file.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This method will extract all entries in the <c>ZipFile</c> to the specified
+ /// path. For an extraction that would overwrite an existing file, the behavior
+ /// is dictated by <paramref name="extractExistingFile"/>, which overrides any
+ /// setting you may have made on individual ZipEntry instances.
+ /// </para>
+ ///
+ /// <para>
+ /// The action to take when an extract would overwrite an existing file
+ /// applies to all entries. If you want to set this on a per-entry basis,
+ /// then you must use <see cref="ZipEntry.Extract(String,
+ /// ExtractExistingFileAction)" /> or one of the similar methods.
+ /// </para>
+ ///
+ /// <para>
+ /// Calling this method is equivalent to setting the <see
+ /// cref="ExtractExistingFile"/> property and then calling <see
+ /// cref="ExtractAll(String)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// This method will send verbose output messages to the
+ /// <see cref="StatusMessageTextWriter"/>, if it is set on the <c>ZipFile</c> instance.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example extracts all the entries in a zip archive file, to the
+ /// specified target directory. It does not overwrite any existing files.
+ /// <code>
+ /// String TargetDirectory= "c:\\unpack";
+ /// using(ZipFile zip= ZipFile.Read(ZipFileToExtract))
+ /// {
+ /// zip.ExtractAll(TargetDirectory, ExtractExistingFileAction.DontOverwrite);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Dim TargetDirectory As String = "c:\unpack"
+ /// Using zip As ZipFile = ZipFile.Read(ZipFileToExtract)
+ /// zip.ExtractAll(TargetDirectory, ExtractExistingFileAction.DontOverwrite)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="path">
+ /// The path to which the contents of the zipfile will be extracted.
+ /// The path can be relative or fully-qualified.
+ /// </param>
+ ///
+ /// <param name="extractExistingFile">
+ /// The action to take if extraction would overwrite an existing file.
+ /// </param>
+ /// <seealso cref="ExtractSelectedEntries(String,ExtractExistingFileAction)"/>
+ public void ExtractAll(string path, ExtractExistingFileAction extractExistingFile)
+ {
+ ExtractExistingFile = extractExistingFile;
+ _InternalExtractAll(path, true);
+ }
+
+
+ private void _InternalExtractAll(string path, bool overrideExtractExistingProperty)
+ {
+ bool header = Verbose;
+ _inExtractAll = true;
+ try
+ {
+ OnExtractAllStarted(path);
+
+ int n = 0;
+ foreach (ZipEntry e in _entries.Values)
+ {
+ if (header)
+ {
+ StatusMessageTextWriter.WriteLine("\n{1,-22} {2,-8} {3,4} {4,-8} {0}",
+ "Name", "Modified", "Size", "Ratio", "Packed");
+ StatusMessageTextWriter.WriteLine(new System.String('-', 72));
+ header = false;
+ }
+ if (Verbose)
+ {
+ StatusMessageTextWriter.WriteLine("{1,-22} {2,-8} {3,4:F0}% {4,-8} {0}",
+ e.FileName,
+ e.LastModified.ToString("yyyy-MM-dd HH:mm:ss"),
+ e.UncompressedSize,
+ e.CompressionRatio,
+ e.CompressedSize);
+ if (!String.IsNullOrEmpty(e.Comment))
+ StatusMessageTextWriter.WriteLine(" Comment: {0}", e.Comment);
+ }
+ e.Password = _Password; // this may be null
+ OnExtractEntry(n, true, e, path);
+ if (overrideExtractExistingProperty)
+ e.ExtractExistingFile = this.ExtractExistingFile;
+ e.Extract(path);
+ n++;
+ OnExtractEntry(n, false, e, path);
+ if (_extractOperationCanceled)
+ break;
+ }
+
+ if (!_extractOperationCanceled)
+ {
+ // workitem 8264:
+ // now, set times on directory entries, again.
+ // The problem is, extracting a file changes the times on the parent
+ // directory. So after all files have been extracted, we have to
+ // run through the directories again.
+ foreach (ZipEntry e in _entries.Values)
+ {
+ // check if it is a directory
+ if ((e.IsDirectory) || (e.FileName.EndsWith("/")))
+ {
+ string outputFile = (e.FileName.StartsWith("/"))
+ ? Path.Combine(path, e.FileName.Substring(1))
+ : Path.Combine(path, e.FileName);
+
+ e._SetTimes(outputFile, false);
+ }
+ }
+ OnExtractAllCompleted(path);
+ }
+
+ }
+ finally
+ {
+
+ _inExtractAll = false;
+ }
+ }
+
+
+ }
+}
--- /dev/null
+// ZipFile.Read.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009-2011 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-August-05 11:38:59>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the methods for Reading zip files.
+//
+// ------------------------------------------------------------------
+//
+
+
+using System;
+using System.IO;
+using System.Collections.Generic;
+
+namespace Ionic.Zip
+{
+ /// <summary>
+ /// A class for collecting the various options that can be used when
+ /// Reading zip files for extraction or update.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// When reading a zip file, there are several options an
+ /// application can set, to modify how the file is read, or what
+ /// the library does while reading. This class collects those
+ /// options into one container.
+ /// </para>
+ ///
+ /// <para>
+ /// Pass an instance of the <c>ReadOptions</c> class into the
+ /// <c>ZipFile.Read()</c> method.
+ /// </para>
+ ///
+ /// <seealso cref="ZipFile.Read(String, ReadOptions)"/>.
+ /// <seealso cref="ZipFile.Read(Stream, ReadOptions)"/>.
+ /// </remarks>
+ internal class ReadOptions
+ {
+ /// <summary>
+ /// An event handler for Read operations. When opening large zip
+ /// archives, you may want to display a progress bar or other
+ /// indicator of status progress while reading. This parameter
+ /// allows you to specify a ReadProgress Event Handler directly.
+ /// When you call <c>Read()</c>, the progress event is invoked as
+ /// necessary.
+ /// </summary>
+ public EventHandler<ReadProgressEventArgs> ReadProgress { get; set; }
+
+ /// <summary>
+ /// The <c>System.IO.TextWriter</c> to use for writing verbose status messages
+ /// during operations on the zip archive. A console application may wish to
+ /// pass <c>System.Console.Out</c> to get messages on the Console. A graphical
+ /// or headless application may wish to capture the messages in a different
+ /// <c>TextWriter</c>, such as a <c>System.IO.StringWriter</c>.
+ /// </summary>
+ public TextWriter StatusMessageWriter { get; set; }
+
+ /// <summary>
+ /// The <c>System.Text.Encoding</c> to use when reading in the zip archive. Be
+ /// careful specifying the encoding. If the value you use here is not the same
+ /// as the Encoding used when the zip archive was created (possibly by a
+ /// different archiver) you will get unexpected results and possibly exceptions.
+ /// </summary>
+ ///
+ /// <seealso cref="ZipFile.ProvisionalAlternateEncoding"/>
+ ///
+ public System.Text.Encoding @Encoding { get; set; }
+ }
+
+
+ internal partial class ZipFile
+ {
+ /// <summary>
+ /// Reads a zip file archive and returns the instance.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The stream is read using the default <c>System.Text.Encoding</c>, which is the
+ /// <c>IBM437</c> codepage.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <exception cref="System.Exception">
+ /// Thrown if the <c>ZipFile</c> cannot be read. The implementation of this method
+ /// relies on <c>System.IO.File.OpenRead</c>, which can throw a variety of exceptions,
+ /// including specific exceptions if a file is not found, an unauthorized access
+ /// exception, exceptions for poorly formatted filenames, and so on.
+ /// </exception>
+ ///
+ /// <param name="fileName">
+ /// The name of the zip archive to open. This can be a fully-qualified or relative
+ /// pathname.
+ /// </param>
+ ///
+ /// <seealso cref="ZipFile.Read(String, ReadOptions)"/>.
+ ///
+ /// <returns>The instance read from the zip archive.</returns>
+ ///
+ internal static ZipFile Read(string fileName)
+ {
+ return ZipFile.Read(fileName, null, null, null);
+ }
+
+
+ /// <summary>
+ /// Reads a zip file archive from the named filesystem file using the
+ /// specified options.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This version of the <c>Read()</c> method allows the caller to pass
+ /// in a <c>TextWriter</c> an <c>Encoding</c>, via an instance of the
+ /// <c>ReadOptions</c> class. The <c>ZipFile</c> is read in using the
+ /// specified encoding for entries where UTF-8 encoding is not
+ /// explicitly specified.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// <para>
+ /// This example shows how to read a zip file using the Big-5 Chinese
+ /// code page (950), and extract each entry in the zip file, while
+ /// sending status messages out to the Console.
+ /// </para>
+ ///
+ /// <para>
+ /// For this code to work as intended, the zipfile must have been
+ /// created using the big5 code page (CP950). This is typical, for
+ /// example, when using WinRar on a machine with CP950 set as the
+ /// default code page. In that case, the names of entries within the
+ /// Zip archive will be stored in that code page, and reading the zip
+ /// archive must be done using that code page. If the application did
+ /// not use the correct code page in ZipFile.Read(), then names of
+ /// entries within the zip archive would not be correctly retrieved.
+ /// </para>
+ ///
+ /// <code lang="C#">
+ /// string zipToExtract = "MyArchive.zip";
+ /// string extractDirectory = "extract";
+ /// var options = new ReadOptions
+ /// {
+ /// StatusMessageWriter = System.Console.Out,
+ /// Encoding = System.Text.Encoding.GetEncoding(950)
+ /// };
+ /// using (ZipFile zip = ZipFile.Read(zipToExtract, options))
+ /// {
+ /// foreach (ZipEntry e in zip)
+ /// {
+ /// e.Extract(extractDirectory);
+ /// }
+ /// }
+ /// </code>
+ ///
+ ///
+ /// <code lang="VB">
+ /// Dim zipToExtract as String = "MyArchive.zip"
+ /// Dim extractDirectory as String = "extract"
+ /// Dim options as New ReadOptions
+ /// options.Encoding = System.Text.Encoding.GetEncoding(950)
+ /// options.StatusMessageWriter = System.Console.Out
+ /// Using zip As ZipFile = ZipFile.Read(zipToExtract, options)
+ /// Dim e As ZipEntry
+ /// For Each e In zip
+ /// e.Extract(extractDirectory)
+ /// Next
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ ///
+ /// <example>
+ ///
+ /// <para>
+ /// This example shows how to read a zip file using the default
+ /// code page, to remove entries that have a modified date before a given threshold,
+ /// sending status messages out to a <c>StringWriter</c>.
+ /// </para>
+ ///
+ /// <code lang="C#">
+ /// var options = new ReadOptions
+ /// {
+ /// StatusMessageWriter = new System.IO.StringWriter()
+ /// };
+ /// using (ZipFile zip = ZipFile.Read("PackedDocuments.zip", options))
+ /// {
+ /// var Threshold = new DateTime(2007,7,4);
+ /// // We cannot remove the entry from the list, within the context of
+ /// // an enumeration of said list.
+ /// // So we add the doomed entry to a list to be removed later.
+ /// // pass 1: mark the entries for removal
+ /// var MarkedEntries = new System.Collections.Generic.List<ZipEntry>();
+ /// foreach (ZipEntry e in zip)
+ /// {
+ /// if (e.LastModified < Threshold)
+ /// MarkedEntries.Add(e);
+ /// }
+ /// // pass 2: actually remove the entry.
+ /// foreach (ZipEntry zombie in MarkedEntries)
+ /// zip.RemoveEntry(zombie);
+ /// zip.Comment = "This archive has been updated.";
+ /// zip.Save();
+ /// }
+ /// // can now use contents of sw, eg store in an audit log
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Dim options as New ReadOptions
+ /// options.StatusMessageWriter = New System.IO.StringWriter
+ /// Using zip As ZipFile = ZipFile.Read("PackedDocuments.zip", options)
+ /// Dim Threshold As New DateTime(2007, 7, 4)
+ /// ' We cannot remove the entry from the list, within the context of
+ /// ' an enumeration of said list.
+ /// ' So we add the doomed entry to a list to be removed later.
+ /// ' pass 1: mark the entries for removal
+ /// Dim MarkedEntries As New System.Collections.Generic.List(Of ZipEntry)
+ /// Dim e As ZipEntry
+ /// For Each e In zip
+ /// If (e.LastModified < Threshold) Then
+ /// MarkedEntries.Add(e)
+ /// End If
+ /// Next
+ /// ' pass 2: actually remove the entry.
+ /// Dim zombie As ZipEntry
+ /// For Each zombie In MarkedEntries
+ /// zip.RemoveEntry(zombie)
+ /// Next
+ /// zip.Comment = "This archive has been updated."
+ /// zip.Save
+ /// End Using
+ /// ' can now use contents of sw, eg store in an audit log
+ /// </code>
+ /// </example>
+ ///
+ /// <exception cref="System.Exception">
+ /// Thrown if the zipfile cannot be read. The implementation of
+ /// this method relies on <c>System.IO.File.OpenRead</c>, which
+ /// can throw a variety of exceptions, including specific
+ /// exceptions if a file is not found, an unauthorized access
+ /// exception, exceptions for poorly formatted filenames, and so
+ /// on.
+ /// </exception>
+ ///
+ /// <param name="fileName">
+ /// The name of the zip archive to open.
+ /// This can be a fully-qualified or relative pathname.
+ /// </param>
+ ///
+ /// <param name="options">
+ /// The set of options to use when reading the zip file.
+ /// </param>
+ ///
+ /// <returns>The ZipFile instance read from the zip archive.</returns>
+ ///
+ /// <seealso cref="ZipFile.Read(Stream, ReadOptions)"/>
+ ///
+ internal static ZipFile Read(string fileName,
+ ReadOptions options)
+ {
+ if (options == null)
+ throw new ArgumentNullException("options");
+ return Read(fileName,
+ options.StatusMessageWriter,
+ options.Encoding,
+ options.ReadProgress);
+ }
+
+ /// <summary>
+ /// Reads a zip file archive using the specified text encoding, the specified
+ /// TextWriter for status messages, and the specified ReadProgress event handler,
+ /// and returns the instance.
+ /// </summary>
+ ///
+ /// <param name="fileName">
+ /// The name of the zip archive to open.
+ /// This can be a fully-qualified or relative pathname.
+ /// </param>
+ ///
+ /// <param name="readProgress">
+ /// An event handler for Read operations.
+ /// </param>
+ ///
+ /// <param name="statusMessageWriter">
+ /// The <c>System.IO.TextWriter</c> to use for writing verbose status messages
+ /// during operations on the zip archive. A console application may wish to
+ /// pass <c>System.Console.Out</c> to get messages on the Console. A graphical
+ /// or headless application may wish to capture the messages in a different
+ /// <c>TextWriter</c>, such as a <c>System.IO.StringWriter</c>.
+ /// </param>
+ ///
+ /// <param name="encoding">
+ /// The <c>System.Text.Encoding</c> to use when reading in the zip archive. Be
+ /// careful specifying the encoding. If the value you use here is not the same
+ /// as the Encoding used when the zip archive was created (possibly by a
+ /// different archiver) you will get unexpected results and possibly exceptions.
+ /// </param>
+ ///
+ /// <returns>The instance read from the zip archive.</returns>
+ ///
+ private static ZipFile Read(string fileName,
+ TextWriter statusMessageWriter,
+ System.Text.Encoding encoding,
+ EventHandler<ReadProgressEventArgs> readProgress)
+ {
+ ZipFile zf = new ZipFile();
+ zf.AlternateEncoding = encoding ?? DefaultEncoding;
+ zf.AlternateEncodingUsage = ZipOption.Always;
+ zf._StatusMessageTextWriter = statusMessageWriter;
+ zf._name = fileName;
+ if (readProgress != null)
+ zf.ReadProgress = readProgress;
+
+ if (zf.Verbose) zf._StatusMessageTextWriter.WriteLine("reading from {0}...", fileName);
+
+ ReadIntoInstance(zf);
+ zf._fileAlreadyExists = true;
+
+ return zf;
+ }
+
+ /// <summary>
+ /// Reads a zip archive from a stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// When reading from a file, it's probably easier to just use
+ /// <see cref="ZipFile.Read(String,
+ /// ReadOptions)">ZipFile.Read(String, ReadOptions)</see>. This
+ /// overload is useful when when the zip archive content is
+ /// available from an already-open stream. The stream must be
+ /// open and readable and seekable when calling this method. The
+ /// stream is left open when the reading is completed.
+ /// </para>
+ ///
+ /// <para>
+ /// Using this overload, the stream is read using the default
+ /// <c>System.Text.Encoding</c>, which is the <c>IBM437</c>
+ /// codepage. If you want to specify the encoding to use when
+ /// reading the zipfile content, see
+ /// <see cref="ZipFile.Read(Stream,
+ /// ReadOptions)">ZipFile.Read(Stream, ReadOptions)</see>. This
+ /// </para>
+ ///
+ /// <para>
+ /// Reading of zip content begins at the current position in the
+ /// stream. This means if you have a stream that concatenates
+ /// regular data and zip data, if you position the open, readable
+ /// stream at the start of the zip data, you will be able to read
+ /// the zip archive using this constructor, or any of the ZipFile
+ /// constructors that accept a <see cref="System.IO.Stream" /> as
+ /// input. Some examples of where this might be useful: the zip
+ /// content is concatenated at the end of a regular EXE file, as
+ /// some self-extracting archives do. (Note: SFX files produced
+ /// by DotNetZip do not work this way; they can be read as normal
+ /// ZIP files). Another example might be a stream being read from
+ /// a database, where the zip content is embedded within an
+ /// aggregate stream of data.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// <para>
+ /// This example shows how to Read zip content from a stream, and
+ /// extract one entry into a different stream. In this example,
+ /// the filename "NameOfEntryInArchive.doc", refers only to the
+ /// name of the entry within the zip archive. A file by that
+ /// name is not created in the filesystem. The I/O is done
+ /// strictly with the given streams.
+ /// </para>
+ ///
+ /// <code>
+ /// using (ZipFile zip = ZipFile.Read(InputStream))
+ /// {
+ /// zip.Extract("NameOfEntryInArchive.doc", OutputStream);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip as ZipFile = ZipFile.Read(InputStream)
+ /// zip.Extract("NameOfEntryInArchive.doc", OutputStream)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="zipStream">the stream containing the zip data.</param>
+ ///
+ /// <returns>The ZipFile instance read from the stream</returns>
+ ///
+ internal static ZipFile Read(Stream zipStream)
+ {
+ return Read(zipStream, null, null, null);
+ }
+
+ /// <summary>
+ /// Reads a zip file archive from the given stream using the
+ /// specified options.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// When reading from a file, it's probably easier to just use
+ /// <see cref="ZipFile.Read(String,
+ /// ReadOptions)">ZipFile.Read(String, ReadOptions)</see>. This
+ /// overload is useful when when the zip archive content is
+ /// available from an already-open stream. The stream must be
+ /// open and readable and seekable when calling this method. The
+ /// stream is left open when the reading is completed.
+ /// </para>
+ ///
+ /// <para>
+ /// Reading of zip content begins at the current position in the
+ /// stream. This means if you have a stream that concatenates
+ /// regular data and zip data, if you position the open, readable
+ /// stream at the start of the zip data, you will be able to read
+ /// the zip archive using this constructor, or any of the ZipFile
+ /// constructors that accept a <see cref="System.IO.Stream" /> as
+ /// input. Some examples of where this might be useful: the zip
+ /// content is concatenated at the end of a regular EXE file, as
+ /// some self-extracting archives do. (Note: SFX files produced
+ /// by DotNetZip do not work this way; they can be read as normal
+ /// ZIP files). Another example might be a stream being read from
+ /// a database, where the zip content is embedded within an
+ /// aggregate stream of data.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="zipStream">the stream containing the zip data.</param>
+ ///
+ /// <param name="options">
+ /// The set of options to use when reading the zip file.
+ /// </param>
+ ///
+ /// <exception cref="System.Exception">
+ /// Thrown if the zip archive cannot be read.
+ /// </exception>
+ ///
+ /// <returns>The ZipFile instance read from the stream.</returns>
+ ///
+ /// <seealso cref="ZipFile.Read(String, ReadOptions)"/>
+ ///
+ internal static ZipFile Read(Stream zipStream, ReadOptions options)
+ {
+ if (options == null)
+ throw new ArgumentNullException("options");
+
+ return Read(zipStream,
+ options.StatusMessageWriter,
+ options.Encoding,
+ options.ReadProgress);
+ }
+
+
+
+ /// <summary>
+ /// Reads a zip archive from a stream, using the specified text Encoding, the
+ /// specified TextWriter for status messages,
+ /// and the specified ReadProgress event handler.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Reading of zip content begins at the current position in the stream. This
+ /// means if you have a stream that concatenates regular data and zip data, if
+ /// you position the open, readable stream at the start of the zip data, you
+ /// will be able to read the zip archive using this constructor, or any of the
+ /// ZipFile constructors that accept a <see cref="System.IO.Stream" /> as
+ /// input. Some examples of where this might be useful: the zip content is
+ /// concatenated at the end of a regular EXE file, as some self-extracting
+ /// archives do. (Note: SFX files produced by DotNetZip do not work this
+ /// way). Another example might be a stream being read from a database, where
+ /// the zip content is embedded within an aggregate stream of data.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="zipStream">the stream containing the zip data.</param>
+ ///
+ /// <param name="statusMessageWriter">
+ /// The <c>System.IO.TextWriter</c> to which verbose status messages are written
+ /// during operations on the <c>ZipFile</c>. For example, in a console
+ /// application, System.Console.Out works, and will get a message for each entry
+ /// added to the ZipFile. If the TextWriter is <c>null</c>, no verbose messages
+ /// are written.
+ /// </param>
+ ///
+ /// <param name="encoding">
+ /// The text encoding to use when reading entries that do not have the UTF-8
+ /// encoding bit set. Be careful specifying the encoding. If the value you use
+ /// here is not the same as the Encoding used when the zip archive was created
+ /// (possibly by a different archiver) you will get unexpected results and
+ /// possibly exceptions. See the <see cref="ProvisionalAlternateEncoding"/>
+ /// property for more information.
+ /// </param>
+ ///
+ /// <param name="readProgress">
+ /// An event handler for Read operations.
+ /// </param>
+ ///
+ /// <returns>an instance of ZipFile</returns>
+ private static ZipFile Read(Stream zipStream,
+ TextWriter statusMessageWriter,
+ System.Text.Encoding encoding,
+ EventHandler<ReadProgressEventArgs> readProgress)
+ {
+ if (zipStream == null)
+ throw new ArgumentNullException("zipStream");
+
+ ZipFile zf = new ZipFile();
+ zf._StatusMessageTextWriter = statusMessageWriter;
+ zf._alternateEncoding = encoding ?? ZipFile.DefaultEncoding;
+ zf._alternateEncodingUsage = ZipOption.Always;
+ if (readProgress != null)
+ zf.ReadProgress += readProgress;
+ zf._readstream = (zipStream.Position == 0L)
+ ? zipStream
+ : new OffsetStream(zipStream);
+ zf._ReadStreamIsOurs = false;
+ if (zf.Verbose) zf._StatusMessageTextWriter.WriteLine("reading from stream...");
+
+ ReadIntoInstance(zf);
+ return zf;
+ }
+
+
+
+ private static void ReadIntoInstance(ZipFile zf)
+ {
+ Stream s = zf.ReadStream;
+ try
+ {
+ zf._readName = zf._name; // workitem 13915
+ if (!s.CanSeek)
+ {
+ ReadIntoInstance_Orig(zf);
+ return;
+ }
+
+ zf.OnReadStarted();
+
+ // change for workitem 8098
+ //zf._originPosition = s.Position;
+
+ // Try reading the central directory, rather than scanning the file.
+
+ uint datum = ReadFirstFourBytes(s);
+
+ if (datum == ZipConstants.EndOfCentralDirectorySignature)
+ return;
+
+
+ // start at the end of the file...
+ // seek backwards a bit, then look for the EoCD signature.
+ int nTries = 0;
+ bool success = false;
+
+ // The size of the end-of-central-directory-footer plus 2 bytes is 18.
+ // This implies an archive comment length of 0. We'll add a margin of
+ // safety and start "in front" of that, when looking for the
+ // EndOfCentralDirectorySignature
+ long posn = s.Length - 64;
+ long maxSeekback = Math.Max(s.Length - 0x4000, 10);
+ do
+ {
+ if (posn < 0) posn = 0; // BOF
+ s.Seek(posn, SeekOrigin.Begin);
+ long bytesRead = SharedUtilities.FindSignature(s, (int)ZipConstants.EndOfCentralDirectorySignature);
+ if (bytesRead != -1)
+ success = true;
+ else
+ {
+ if (posn==0) break; // started at the BOF and found nothing
+ nTries++;
+ // Weird: with NETCF, negative offsets from SeekOrigin.End DO
+ // NOT WORK. So rather than seek a negative offset, we seek
+ // from SeekOrigin.Begin using a smaller number.
+ posn -= (32 * (nTries + 1) * nTries);
+ }
+ }
+ while (!success && posn > maxSeekback);
+
+ if (success)
+ {
+ // workitem 8299
+ zf._locEndOfCDS = s.Position - 4;
+
+ byte[] block = new byte[16];
+ s.Read(block, 0, block.Length);
+
+ zf._diskNumberWithCd = BitConverter.ToUInt16(block, 2);
+
+ if (zf._diskNumberWithCd == 0xFFFF)
+ throw new ZipException("Spanned archives with more than 65534 segments are not supported at this time.");
+
+ zf._diskNumberWithCd++; // I think the number in the file differs from reality by 1
+
+ int i = 12;
+
+ uint offset32 = (uint) BitConverter.ToUInt32(block, i);
+ if (offset32 == 0xFFFFFFFF)
+ {
+ Zip64SeekToCentralDirectory(zf);
+ }
+ else
+ {
+ zf._OffsetOfCentralDirectory = offset32;
+ // change for workitem 8098
+ s.Seek(offset32, SeekOrigin.Begin);
+ }
+
+ ReadCentralDirectory(zf);
+ }
+ else
+ {
+ // Could not find the central directory.
+ // Fallback to the old method.
+ // workitem 8098: ok
+ //s.Seek(zf._originPosition, SeekOrigin.Begin);
+ s.Seek(0L, SeekOrigin.Begin);
+ ReadIntoInstance_Orig(zf);
+ }
+ }
+ catch (Exception ex1)
+ {
+ if (zf._ReadStreamIsOurs && zf._readstream != null)
+ {
+ try
+ {
+#if NETCF
+ zf._readstream.Close();
+#else
+ zf._readstream.Dispose();
+#endif
+ zf._readstream = null;
+ }
+ finally { }
+ }
+
+ throw new ZipException("Cannot read that as a ZipFile", ex1);
+ }
+
+ // the instance has been read in
+ zf._contentsChanged = false;
+ }
+
+
+
+ private static void Zip64SeekToCentralDirectory(ZipFile zf)
+ {
+ Stream s = zf.ReadStream;
+ byte[] block = new byte[16];
+
+ // seek back to find the ZIP64 EoCD.
+ // I think this might not work for .NET CF ?
+ s.Seek(-40, SeekOrigin.Current);
+ s.Read(block, 0, 16);
+
+ Int64 offset64 = BitConverter.ToInt64(block, 8);
+ zf._OffsetOfCentralDirectory = 0xFFFFFFFF;
+ zf._OffsetOfCentralDirectory64 = offset64;
+ // change for workitem 8098
+ s.Seek(offset64, SeekOrigin.Begin);
+ //zf.SeekFromOrigin(Offset64);
+
+ uint datum = (uint)Ionic.Zip.SharedUtilities.ReadInt(s);
+ if (datum != ZipConstants.Zip64EndOfCentralDirectoryRecordSignature)
+ throw new BadReadException(String.Format(" Bad signature (0x{0:X8}) looking for ZIP64 EoCD Record at position 0x{1:X8}", datum, s.Position));
+
+ s.Read(block, 0, 8);
+ Int64 Size = BitConverter.ToInt64(block, 0);
+
+ block = new byte[Size];
+ s.Read(block, 0, block.Length);
+
+ offset64 = BitConverter.ToInt64(block, 36);
+ // change for workitem 8098
+ s.Seek(offset64, SeekOrigin.Begin);
+ //zf.SeekFromOrigin(Offset64);
+ }
+
+
+ private static uint ReadFirstFourBytes(Stream s)
+ {
+ uint datum = (uint)Ionic.Zip.SharedUtilities.ReadInt(s);
+ return datum;
+ }
+
+
+
+ private static void ReadCentralDirectory(ZipFile zf)
+ {
+ // We must have the central directory footer record, in order to properly
+ // read zip dir entries from the central directory. This because the logic
+ // knows when to open a spanned file when the volume number for the central
+ // directory differs from the volume number for the zip entry. The
+ // _diskNumberWithCd was set when originally finding the offset for the
+ // start of the Central Directory.
+
+ // workitem 9214
+ bool inputUsesZip64 = false;
+ ZipEntry de;
+ // in lieu of hashset, use a dictionary
+ var previouslySeen = new Dictionary<String,object>();
+ while ((de = ZipEntry.ReadDirEntry(zf, previouslySeen)) != null)
+ {
+ de.ResetDirEntry();
+ zf.OnReadEntry(true, null);
+
+ if (zf.Verbose)
+ zf.StatusMessageTextWriter.WriteLine("entry {0}", de.FileName);
+
+ zf._entries.Add(de.FileName,de);
+
+ // workitem 9214
+ if (de._InputUsesZip64) inputUsesZip64 = true;
+ previouslySeen.Add(de.FileName, null); // to prevent dupes
+ }
+
+ // workitem 9214; auto-set the zip64 flag
+ if (inputUsesZip64) zf.UseZip64WhenSaving = Zip64Option.Always;
+
+ // workitem 8299
+ if (zf._locEndOfCDS > 0)
+ zf.ReadStream.Seek(zf._locEndOfCDS, SeekOrigin.Begin);
+
+ ReadCentralDirectoryFooter(zf);
+
+ if (zf.Verbose && !String.IsNullOrEmpty(zf.Comment))
+ zf.StatusMessageTextWriter.WriteLine("Zip file Comment: {0}", zf.Comment);
+
+ // We keep the read stream open after reading.
+
+ if (zf.Verbose)
+ zf.StatusMessageTextWriter.WriteLine("read in {0} entries.", zf._entries.Count);
+
+ zf.OnReadCompleted();
+ }
+
+
+
+
+ // build the TOC by reading each entry in the file.
+ private static void ReadIntoInstance_Orig(ZipFile zf)
+ {
+ zf.OnReadStarted();
+ //zf._entries = new System.Collections.Generic.List<ZipEntry>();
+ zf._entries = new System.Collections.Generic.Dictionary<String,ZipEntry>();
+
+ ZipEntry e;
+ if (zf.Verbose)
+ if (zf.Name == null)
+ zf.StatusMessageTextWriter.WriteLine("Reading zip from stream...");
+ else
+ zf.StatusMessageTextWriter.WriteLine("Reading zip {0}...", zf.Name);
+
+ // work item 6647: PK00 (packed to removable disk)
+ bool firstEntry = true;
+ ZipContainer zc = new ZipContainer(zf);
+ while ((e = ZipEntry.ReadEntry(zc, firstEntry)) != null)
+ {
+ if (zf.Verbose)
+ zf.StatusMessageTextWriter.WriteLine(" {0}", e.FileName);
+
+ zf._entries.Add(e.FileName,e);
+ firstEntry = false;
+ }
+
+ // read the zipfile's central directory structure here.
+ // workitem 9912
+ // But, because it may be corrupted, ignore errors.
+ try
+ {
+ ZipEntry de;
+ // in lieu of hashset, use a dictionary
+ var previouslySeen = new Dictionary<String,Object>();
+ while ((de = ZipEntry.ReadDirEntry(zf, previouslySeen)) != null)
+ {
+ // Housekeeping: Since ZipFile exposes ZipEntry elements in the enumerator,
+ // we need to copy the comment that we grab from the ZipDirEntry
+ // into the ZipEntry, so the application can access the comment.
+ // Also since ZipEntry is used to Write zip files, we need to copy the
+ // file attributes to the ZipEntry as appropriate.
+ ZipEntry e1 = zf._entries[de.FileName];
+ if (e1 != null)
+ {
+ e1._Comment = de.Comment;
+ if (de.IsDirectory) e1.MarkAsDirectory();
+ }
+ previouslySeen.Add(de.FileName,null); // to prevent dupes
+ }
+
+ // workitem 8299
+ if (zf._locEndOfCDS > 0)
+ zf.ReadStream.Seek(zf._locEndOfCDS, SeekOrigin.Begin);
+
+ ReadCentralDirectoryFooter(zf);
+
+ if (zf.Verbose && !String.IsNullOrEmpty(zf.Comment))
+ zf.StatusMessageTextWriter.WriteLine("Zip file Comment: {0}", zf.Comment);
+ }
+ catch (ZipException) { }
+ catch (IOException) { }
+
+ zf.OnReadCompleted();
+ }
+
+
+
+
+ private static void ReadCentralDirectoryFooter(ZipFile zf)
+ {
+ Stream s = zf.ReadStream;
+ int signature = Ionic.Zip.SharedUtilities.ReadSignature(s);
+
+ byte[] block = null;
+ int j = 0;
+ if (signature == ZipConstants.Zip64EndOfCentralDirectoryRecordSignature)
+ {
+ // We have a ZIP64 EOCD
+ // This data block is 4 bytes sig, 8 bytes size, 44 bytes fixed data,
+ // followed by a variable-sized extension block. We have read the sig already.
+ // 8 - datasize (64 bits)
+ // 2 - version made by
+ // 2 - version needed to extract
+ // 4 - number of this disk
+ // 4 - number of the disk with the start of the CD
+ // 8 - total number of entries in the CD on this disk
+ // 8 - total number of entries in the CD
+ // 8 - size of the CD
+ // 8 - offset of the CD
+ // -----------------------
+ // 52 bytes
+
+ block = new byte[8 + 44];
+ s.Read(block, 0, block.Length);
+
+ Int64 DataSize = BitConverter.ToInt64(block, 0); // == 44 + the variable length
+
+ if (DataSize < 44)
+ throw new ZipException("Bad size in the ZIP64 Central Directory.");
+
+ zf._versionMadeBy = BitConverter.ToUInt16(block, j);
+ j += 2;
+ zf._versionNeededToExtract = BitConverter.ToUInt16(block, j);
+ j += 2;
+ zf._diskNumberWithCd = BitConverter.ToUInt32(block, j);
+ j += 2;
+
+ //zf._diskNumberWithCd++; // hack!!
+
+ // read the extended block
+ block = new byte[DataSize - 44];
+ s.Read(block, 0, block.Length);
+ // discard the result
+
+ signature = Ionic.Zip.SharedUtilities.ReadSignature(s);
+ if (signature != ZipConstants.Zip64EndOfCentralDirectoryLocatorSignature)
+ throw new ZipException("Inconsistent metadata in the ZIP64 Central Directory.");
+
+ block = new byte[16];
+ s.Read(block, 0, block.Length);
+ // discard the result
+
+ signature = Ionic.Zip.SharedUtilities.ReadSignature(s);
+ }
+
+ // Throw if this is not a signature for "end of central directory record"
+ // This is a sanity check.
+ if (signature != ZipConstants.EndOfCentralDirectorySignature)
+ {
+ s.Seek(-4, SeekOrigin.Current);
+ throw new BadReadException(String.Format("Bad signature ({0:X8}) at position 0x{1:X8}",
+ signature, s.Position));
+ }
+
+ // read the End-of-Central-Directory-Record
+ block = new byte[16];
+ zf.ReadStream.Read(block, 0, block.Length);
+
+ // off sz data
+ // -------------------------------------------------------
+ // 0 4 end of central dir signature (0x06054b50)
+ // 4 2 number of this disk
+ // 6 2 number of the disk with start of the central directory
+ // 8 2 total number of entries in the central directory on this disk
+ // 10 2 total number of entries in the central directory
+ // 12 4 size of the central directory
+ // 16 4 offset of start of central directory with respect to the starting disk number
+ // 20 2 ZIP file comment length
+ // 22 ?? ZIP file comment
+
+ if (zf._diskNumberWithCd == 0)
+ {
+ zf._diskNumberWithCd = BitConverter.ToUInt16(block, 2);
+ //zf._diskNumberWithCd++; // hack!!
+ }
+
+ // read the comment here
+ ReadZipFileComment(zf);
+ }
+
+
+
+ private static void ReadZipFileComment(ZipFile zf)
+ {
+ // read the comment here
+ byte[] block = new byte[2];
+ zf.ReadStream.Read(block, 0, block.Length);
+
+ Int16 commentLength = (short)(block[0] + block[1] * 256);
+ if (commentLength > 0)
+ {
+ block = new byte[commentLength];
+ zf.ReadStream.Read(block, 0, block.Length);
+
+ // workitem 10392 - prefer ProvisionalAlternateEncoding,
+ // first. The fix for workitem 6513 tried to use UTF8
+ // only as necessary, but that is impossible to test
+ // for, in this direction. There's no way to know what
+ // characters the already-encoded bytes refer
+ // to. Therefore, must do what the user tells us.
+
+ string s1 = zf.AlternateEncoding.GetString(block, 0, block.Length);
+ zf.Comment = s1;
+ }
+ }
+
+
+ // private static bool BlocksAreEqual(byte[] a, byte[] b)
+ // {
+ // if (a.Length != b.Length) return false;
+ // for (int i = 0; i < a.Length; i++)
+ // {
+ // if (a[i] != b[i]) return false;
+ // }
+ // return true;
+ // }
+
+
+
+ /// <summary>
+ /// Checks the given file to see if it appears to be a valid zip file.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// Calling this method is equivalent to calling <see cref="IsZipFile(string,
+ /// bool)"/> with the testExtract parameter set to false.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="fileName">The file to check.</param>
+ /// <returns>true if the file appears to be a zip file.</returns>
+ internal static bool IsZipFile(string fileName)
+ {
+ return IsZipFile(fileName, false);
+ }
+
+
+ /// <summary>
+ /// Checks a file to see if it is a valid zip file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method opens the specified zip file, reads in the zip archive,
+ /// verifying the ZIP metadata as it reads.
+ /// </para>
+ ///
+ /// <para>
+ /// If everything succeeds, then the method returns true. If anything fails -
+ /// for example if an incorrect signature or CRC is found, indicating a
+ /// corrupt file, the the method returns false. This method also returns
+ /// false for a file that does not exist.
+ /// </para>
+ ///
+ /// <para>
+ /// If <paramref name="testExtract"/> is true, as part of its check, this
+ /// method reads in the content for each entry, expands it, and checks CRCs.
+ /// This provides an additional check beyond verifying the zip header and
+ /// directory data.
+ /// </para>
+ ///
+ /// <para>
+ /// If <paramref name="testExtract"/> is true, and if any of the zip entries
+ /// are protected with a password, this method will return false. If you want
+ /// to verify a <c>ZipFile</c> that has entries which are protected with a
+ /// password, you will need to do that manually.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="fileName">The zip file to check.</param>
+ /// <param name="testExtract">true if the caller wants to extract each entry.</param>
+ /// <returns>true if the file contains a valid zip file.</returns>
+ internal static bool IsZipFile(string fileName, bool testExtract)
+ {
+ bool result = false;
+ try
+ {
+ if (!File.Exists(fileName)) return false;
+
+ using (var s = File.Open(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
+ {
+ result = IsZipFile(s, testExtract);
+ }
+ }
+ catch (IOException) { }
+ catch (ZipException) { }
+ return result;
+ }
+
+
+ /// <summary>
+ /// Checks a stream to see if it contains a valid zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method reads the zip archive contained in the specified stream, verifying
+ /// the ZIP metadata as it reads. If testExtract is true, this method also extracts
+ /// each entry in the archive, dumping all the bits into <see cref="Stream.Null"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// If everything succeeds, then the method returns true. If anything fails -
+ /// for example if an incorrect signature or CRC is found, indicating a corrupt
+ /// file, the the method returns false. This method also returns false for a
+ /// file that does not exist.
+ /// </para>
+ ///
+ /// <para>
+ /// If <c>testExtract</c> is true, this method reads in the content for each
+ /// entry, expands it, and checks CRCs. This provides an additional check
+ /// beyond verifying the zip header data.
+ /// </para>
+ ///
+ /// <para>
+ /// If <c>testExtract</c> is true, and if any of the zip entries are protected
+ /// with a password, this method will return false. If you want to verify a
+ /// ZipFile that has entries which are protected with a password, you will need
+ /// to do that manually.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <seealso cref="IsZipFile(string, bool)"/>
+ ///
+ /// <param name="stream">The stream to check.</param>
+ /// <param name="testExtract">true if the caller wants to extract each entry.</param>
+ /// <returns>true if the stream contains a valid zip archive.</returns>
+ internal static bool IsZipFile(Stream stream, bool testExtract)
+ {
+ if (stream == null)
+ throw new ArgumentNullException("stream");
+
+ bool result = false;
+ try
+ {
+ if (!stream.CanRead) return false;
+
+ var bitBucket = Stream.Null;
+
+ using (ZipFile zip1 = ZipFile.Read(stream, null, null, null))
+ {
+ if (testExtract)
+ {
+ foreach (var e in zip1)
+ {
+ if (!e.IsDirectory)
+ {
+ e.Extract(bitBucket);
+ }
+ }
+ }
+ }
+ result = true;
+ }
+ catch (IOException) { }
+ catch (ZipException) { }
+ return result;
+ }
+
+
+
+
+ }
+
+}
--- /dev/null
+// ZipFile.Save.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-August-05 13:31:23>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the methods for Save operations on zip files.
+//
+// ------------------------------------------------------------------
+//
+
+
+using System;
+using System.IO;
+using System.Collections.Generic;
+
+namespace Ionic.Zip
+{
+
+ internal partial class ZipFile
+ {
+
+ /// <summary>
+ /// Delete file with retry on UnauthorizedAccessException.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// When calling File.Delete() on a file that has been "recently"
+ /// created, the call sometimes fails with
+ /// UnauthorizedAccessException. This method simply retries the Delete 3
+ /// times with a sleep between tries.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name='filename'>the name of the file to be deleted</param>
+ private void DeleteFileWithRetry(string filename)
+ {
+ bool done = false;
+ int nRetries = 3;
+ for (int i=0; i < nRetries && !done; i++)
+ {
+ try
+ {
+ File.Delete(filename);
+ done = true;
+ }
+ catch (System.UnauthorizedAccessException)
+ {
+ Console.WriteLine("************************************************** Retry delete.");
+ System.Threading.Thread.Sleep(200+i*200);
+ }
+ }
+ }
+
+
+ /// <summary>
+ /// Saves the Zip archive to a file, specified by the Name property of the
+ /// <c>ZipFile</c>.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The <c>ZipFile</c> instance is written to storage, typically a zip file
+ /// in a filesystem, only when the caller calls <c>Save</c>. In the typical
+ /// case, the Save operation writes the zip content to a temporary file, and
+ /// then renames the temporary file to the desired name. If necessary, this
+ /// method will delete a pre-existing file before the rename.
+ /// </para>
+ ///
+ /// <para>
+ /// The <see cref="ZipFile.Name"/> property is specified either explicitly,
+ /// or implicitly using one of the parameterized ZipFile constructors. For
+ /// COM Automation clients, the <c>Name</c> property must be set explicitly,
+ /// because COM Automation clients cannot call parameterized constructors.
+ /// </para>
+ ///
+ /// <para>
+ /// When using a filesystem file for the Zip output, it is possible to call
+ /// <c>Save</c> multiple times on the <c>ZipFile</c> instance. With each
+ /// call the zip content is re-written to the same output file.
+ /// </para>
+ ///
+ /// <para>
+ /// Data for entries that have been added to the <c>ZipFile</c> instance is
+ /// written to the output when the <c>Save</c> method is called. This means
+ /// that the input streams for those entries must be available at the time
+ /// the application calls <c>Save</c>. If, for example, the application
+ /// adds entries with <c>AddEntry</c> using a dynamically-allocated
+ /// <c>MemoryStream</c>, the memory stream must not have been disposed
+ /// before the call to <c>Save</c>. See the <see
+ /// cref="ZipEntry.InputStream"/> property for more discussion of the
+ /// availability requirements of the input stream for an entry, and an
+ /// approach for providing just-in-time stream lifecycle management.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.AddEntry(String, System.IO.Stream)"/>
+ ///
+ /// <exception cref="Ionic.Zip.BadStateException">
+ /// Thrown if you haven't specified a location or stream for saving the zip,
+ /// either in the constructor or by setting the Name property, or if you try
+ /// to save a regular zip archive to a filename with a .exe extension.
+ /// </exception>
+ ///
+ /// <exception cref="System.OverflowException">
+ /// Thrown if <see cref="MaxOutputSegmentSize"/> is non-zero, and the number
+ /// of segments that would be generated for the spanned zip file during the
+ /// save operation exceeds 99. If this happens, you need to increase the
+ /// segment size.
+ /// </exception>
+ ///
+ public void Save()
+ {
+ try
+ {
+ bool thisSaveUsedZip64 = false;
+ _saveOperationCanceled = false;
+ _numberOfSegmentsForMostRecentSave = 0;
+ OnSaveStarted();
+
+ if (WriteStream == null)
+ throw new BadStateException("You haven't specified where to save the zip.");
+
+ if (_name != null && _name.EndsWith(".exe") && !_SavingSfx)
+ throw new BadStateException("You specified an EXE for a plain zip file.");
+
+ // check if modified, before saving.
+ if (!_contentsChanged)
+ {
+ OnSaveCompleted();
+ if (Verbose) StatusMessageTextWriter.WriteLine("No save is necessary....");
+ return;
+ }
+
+ Reset(true);
+
+ if (Verbose) StatusMessageTextWriter.WriteLine("saving....");
+
+ // validate the number of entries
+ if (_entries.Count >= 0xFFFF && _zip64 == Zip64Option.Never)
+ throw new ZipException("The number of entries is 65535 or greater. Consider setting the UseZip64WhenSaving property on the ZipFile instance.");
+
+
+ // write an entry in the zip for each file
+ int n = 0;
+ // workitem 9831
+ ICollection<ZipEntry> c = (SortEntriesBeforeSaving) ? EntriesSorted : Entries;
+ foreach (ZipEntry e in c) // _entries.Values
+ {
+ OnSaveEntry(n, e, true);
+ e.Write(WriteStream);
+ if (_saveOperationCanceled)
+ break;
+
+ n++;
+ OnSaveEntry(n, e, false);
+ if (_saveOperationCanceled)
+ break;
+
+ // Some entries can be skipped during the save.
+ if (e.IncludedInMostRecentSave)
+ thisSaveUsedZip64 |= e.OutputUsedZip64.Value;
+ }
+
+
+
+ if (_saveOperationCanceled)
+ return;
+
+ var zss = WriteStream as ZipSegmentedStream;
+
+ _numberOfSegmentsForMostRecentSave = (zss!=null)
+ ? zss.CurrentSegment
+ : 1;
+
+ bool directoryNeededZip64 =
+ ZipOutput.WriteCentralDirectoryStructure
+ (WriteStream,
+ c,
+ _numberOfSegmentsForMostRecentSave,
+ _zip64,
+ Comment,
+ new ZipContainer(this));
+
+ OnSaveEvent(ZipProgressEventType.Saving_AfterSaveTempArchive);
+
+ _hasBeenSaved = true;
+ _contentsChanged = false;
+
+ thisSaveUsedZip64 |= directoryNeededZip64;
+ _OutputUsesZip64 = new Nullable<bool>(thisSaveUsedZip64);
+
+
+ // do the rename as necessary
+ if (_name != null &&
+ (_temporaryFileName!=null || zss != null))
+ {
+ // _temporaryFileName may remain null if we are writing to a stream.
+ // only close the stream if there is a file behind it.
+#if NETCF
+ WriteStream.Close();
+#else
+ WriteStream.Dispose();
+#endif
+ if (_saveOperationCanceled)
+ return;
+
+ if (_fileAlreadyExists && this._readstream != null)
+ {
+ // This means we opened and read a zip file.
+ // If we are now saving to the same file, we need to close the
+ // orig file, first.
+ this._readstream.Close();
+ this._readstream = null;
+ // the archiveStream for each entry needs to be null
+ foreach (var e in c)
+ {
+ var zss1 = e._archiveStream as ZipSegmentedStream;
+ if (zss1 != null)
+#if NETCF
+ zss1.Close();
+#else
+ zss1.Dispose();
+#endif
+ e._archiveStream = null;
+ }
+ }
+
+ string tmpName = null;
+ if (File.Exists(_name))
+ {
+ // the steps:
+ //
+ // 1. Delete tmpName
+ // 2. move existing zip to tmpName
+ // 3. rename (File.Move) working file to name of existing zip
+ // 4. delete tmpName
+ //
+ // This series of steps avoids the exception,
+ // System.IO.IOException:
+ // "Cannot create a file when that file already exists."
+ //
+ // Cannot just call File.Replace() here because
+ // there is a possibility that the TEMP volume is different
+ // that the volume for the final file (c:\ vs d:\).
+ // So we need to do a Delete+Move pair.
+ //
+ // But, when doing the delete, Windows allows a process to
+ // delete the file, even though it is held open by, say, a
+ // virus scanner. It gets internally marked as "delete
+ // pending". The file does not actually get removed from the
+ // file system, it is still there after the File.Delete
+ // call.
+ //
+ // Therefore, we need to move the existing zip, which may be
+ // held open, to some other name. Then rename our working
+ // file to the desired name, then delete (possibly delete
+ // pending) the "other name".
+ //
+ // Ideally this would be transactional. It's possible that the
+ // delete succeeds and the move fails. Lacking transactions, if
+ // this kind of failure happens, we're hosed, and this logic will
+ // throw on the next File.Move().
+ //
+ //File.Delete(_name);
+ // workitem 10447
+#if NETCF || SILVERLIGHT
+ tmpName = _name + "." + SharedUtilities.GenerateRandomStringImpl(8,0) + ".tmp";
+#else
+ tmpName = _name + "." + Path.GetRandomFileName();
+#endif
+ if (File.Exists(tmpName))
+ DeleteFileWithRetry(tmpName);
+ File.Move(_name, tmpName);
+ }
+
+ OnSaveEvent(ZipProgressEventType.Saving_BeforeRenameTempArchive);
+ File.Move((zss != null) ? zss.CurrentTempName : _temporaryFileName,
+ _name);
+
+ OnSaveEvent(ZipProgressEventType.Saving_AfterRenameTempArchive);
+
+ if (tmpName != null)
+ {
+ try
+ {
+ // not critical
+ if (File.Exists(tmpName))
+ File.Delete(tmpName);
+ }
+ catch
+ {
+ // don't care about exceptions here.
+ }
+
+ }
+ _fileAlreadyExists = true;
+ }
+
+ NotifyEntriesSaveComplete(c);
+ OnSaveCompleted();
+ _JustSaved = true;
+ }
+
+ // workitem 5043
+ finally
+ {
+ CleanupAfterSaveOperation();
+ }
+
+ return;
+ }
+
+
+
+ private static void NotifyEntriesSaveComplete(ICollection<ZipEntry> c)
+ {
+ foreach (ZipEntry e in c)
+ {
+ e.NotifySaveComplete();
+ }
+ }
+
+
+ private void RemoveTempFile()
+ {
+ try
+ {
+ if (File.Exists(_temporaryFileName))
+ {
+ File.Delete(_temporaryFileName);
+ }
+ }
+ catch (IOException ex1)
+ {
+ if (Verbose)
+ StatusMessageTextWriter.WriteLine("ZipFile::Save: could not delete temp file: {0}.", ex1.Message);
+ }
+ }
+
+
+ private void CleanupAfterSaveOperation()
+ {
+ if (_name != null)
+ {
+ // close the stream if there is a file behind it.
+ if (_writestream != null)
+ {
+ try
+ {
+ // workitem 7704
+#if NETCF
+ _writestream.Close();
+#else
+ _writestream.Dispose();
+#endif
+ }
+ catch (System.IO.IOException) { }
+ }
+ _writestream = null;
+
+ if (_temporaryFileName != null)
+ {
+ RemoveTempFile();
+ _temporaryFileName = null;
+ }
+ }
+ }
+
+
+ /// <summary>
+ /// Save the file to a new zipfile, with the given name.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method allows the application to explicitly specify the name of the zip
+ /// file when saving. Use this when creating a new zip file, or when
+ /// updating a zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// An application can also save a zip archive in several places by calling this
+ /// method multiple times in succession, with different filenames.
+ /// </para>
+ ///
+ /// <para>
+ /// The <c>ZipFile</c> instance is written to storage, typically a zip file in a
+ /// filesystem, only when the caller calls <c>Save</c>. The Save operation writes
+ /// the zip content to a temporary file, and then renames the temporary file
+ /// to the desired name. If necessary, this method will delete a pre-existing file
+ /// before the rename.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <exception cref="System.ArgumentException">
+ /// Thrown if you specify a directory for the filename.
+ /// </exception>
+ ///
+ /// <param name="fileName">
+ /// The name of the zip archive to save to. Existing files will
+ /// be overwritten with great prejudice.
+ /// </param>
+ ///
+ /// <example>
+ /// This example shows how to create and Save a zip file.
+ /// <code>
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// zip.AddDirectory(@"c:\reports\January");
+ /// zip.Save("January.zip");
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As New ZipFile()
+ /// zip.AddDirectory("c:\reports\January")
+ /// zip.Save("January.zip")
+ /// End Using
+ /// </code>
+ ///
+ /// </example>
+ ///
+ /// <example>
+ /// This example shows how to update a zip file.
+ /// <code>
+ /// using (ZipFile zip = ZipFile.Read("ExistingArchive.zip"))
+ /// {
+ /// zip.AddFile("NewData.csv");
+ /// zip.Save("UpdatedArchive.zip");
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As ZipFile = ZipFile.Read("ExistingArchive.zip")
+ /// zip.AddFile("NewData.csv")
+ /// zip.Save("UpdatedArchive.zip")
+ /// End Using
+ /// </code>
+ ///
+ /// </example>
+ public void Save(String fileName)
+ {
+ // Check for the case where we are re-saving a zip archive
+ // that was originally instantiated with a stream. In that case,
+ // the _name will be null. If so, we set _writestream to null,
+ // which insures that we'll cons up a new WriteStream (with a filesystem
+ // file backing it) in the Save() method.
+ if (_name == null)
+ _writestream = null;
+
+ else _readName = _name; // workitem 13915
+
+ _name = fileName;
+ if (Directory.Exists(_name))
+ throw new ZipException("Bad Directory", new System.ArgumentException("That name specifies an existing directory. Please specify a filename.", "fileName"));
+ _contentsChanged = true;
+ _fileAlreadyExists = File.Exists(_name);
+ Save();
+ }
+
+
+ /// <summary>
+ /// Save the zip archive to the specified stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The <c>ZipFile</c> instance is written to storage - typically a zip file
+ /// in a filesystem, but using this overload, the storage can be anything
+ /// accessible via a writable stream - only when the caller calls <c>Save</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// Use this method to save the zip content to a stream directly. A common
+ /// scenario is an ASP.NET application that dynamically generates a zip file
+ /// and allows the browser to download it. The application can call
+ /// <c>Save(Response.OutputStream)</c> to write a zipfile directly to the
+ /// output stream, without creating a zip file on the disk on the ASP.NET
+ /// server.
+ /// </para>
+ ///
+ /// <para>
+ /// Be careful when saving a file to a non-seekable stream, including
+ /// <c>Response.OutputStream</c>. When DotNetZip writes to a non-seekable
+ /// stream, the zip archive is formatted in such a way that may not be
+ /// compatible with all zip tools on all platforms. It's a perfectly legal
+ /// and compliant zip file, but some people have reported problems opening
+ /// files produced this way using the Mac OS archive utility.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example saves the zipfile content into a MemoryStream, and
+ /// then gets the array of bytes from that MemoryStream.
+ ///
+ /// <code lang="C#">
+ /// using (var zip = new Ionic.Zip.ZipFile())
+ /// {
+ /// zip.CompressionLevel= Ionic.Zlib.CompressionLevel.BestCompression;
+ /// zip.Password = "VerySecret.";
+ /// zip.Encryption = EncryptionAlgorithm.WinZipAes128;
+ /// zip.AddFile(sourceFileName);
+ /// MemoryStream output = new MemoryStream();
+ /// zip.Save(output);
+ ///
+ /// byte[] zipbytes = output.ToArray();
+ /// }
+ /// </code>
+ /// </example>
+ ///
+ /// <example>
+ /// <para>
+ /// This example shows a pitfall you should avoid. DO NOT read
+ /// from a stream, then try to save to the same stream. DO
+ /// NOT DO THIS:
+ /// </para>
+ ///
+ /// <code lang="C#">
+ /// using (var fs = new FileSteeam(filename, FileMode.Open))
+ /// {
+ /// using (var zip = Ionic.Zip.ZipFile.Read(inputStream))
+ /// {
+ /// zip.AddEntry("Name1.txt", "this is the content");
+ /// zip.Save(inputStream); // NO NO NO!!
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <para>
+ /// Better like this:
+ /// </para>
+ ///
+ /// <code lang="C#">
+ /// using (var zip = Ionic.Zip.ZipFile.Read(filename))
+ /// {
+ /// zip.AddEntry("Name1.txt", "this is the content");
+ /// zip.Save(); // YES!
+ /// }
+ /// </code>
+ ///
+ /// </example>
+ ///
+ /// <param name="outputStream">
+ /// The <c>System.IO.Stream</c> to write to. It must be
+ /// writable. If you created the ZipFile instanct by calling
+ /// ZipFile.Read(), this stream must not be the same stream
+ /// you passed to ZipFile.Read().
+ /// </param>
+ public void Save(Stream outputStream)
+ {
+ if (outputStream == null)
+ throw new ArgumentNullException("outputStream");
+ if (!outputStream.CanWrite)
+ throw new ArgumentException("Must be a writable stream.", "outputStream");
+
+ // if we had a filename to save to, we are now obliterating it.
+ _name = null;
+
+ _writestream = new CountingStream(outputStream);
+
+ _contentsChanged = true;
+ _fileAlreadyExists = false;
+ Save();
+ }
+
+
+ }
+
+
+
+ internal static class ZipOutput
+ {
+ internal static bool WriteCentralDirectoryStructure(Stream s,
+ ICollection<ZipEntry> entries,
+ uint numSegments,
+ Zip64Option zip64,
+ String comment,
+ ZipContainer container)
+ {
+ var zss = s as ZipSegmentedStream;
+ if (zss != null)
+ zss.ContiguousWrite = true;
+
+ // write to a memory stream in order to keep the
+ // CDR contiguous
+ Int64 aLength = 0;
+ using (var ms = new MemoryStream())
+ {
+ foreach (ZipEntry e in entries)
+ {
+ if (e.IncludedInMostRecentSave)
+ {
+ // this writes a ZipDirEntry corresponding to the ZipEntry
+ e.WriteCentralDirectoryEntry(ms);
+ }
+ }
+ var a = ms.ToArray();
+ s.Write(a, 0, a.Length);
+ aLength = a.Length;
+ }
+
+
+ // We need to keep track of the start and
+ // Finish of the Central Directory Structure.
+
+ // Cannot always use WriteStream.Length or Position; some streams do
+ // not support these. (eg, ASP.NET Response.OutputStream) In those
+ // cases we have a CountingStream.
+
+ // Also, we cannot just set Start as s.Position bfore the write, and Finish
+ // as s.Position after the write. In a split zip, the write may actually
+ // flip to the next segment. In that case, Start will be zero. But we
+ // don't know that til after we know the size of the thing to write. So the
+ // answer is to compute the directory, then ask the ZipSegmentedStream which
+ // segment that directory would fall in, it it were written. Then, include
+ // that data into the directory, and finally, write the directory to the
+ // output stream.
+
+ var output = s as CountingStream;
+ long Finish = (output != null) ? output.ComputedPosition : s.Position; // BytesWritten
+ long Start = Finish - aLength;
+
+ // need to know which segment the EOCD record starts in
+ UInt32 startSegment = (zss != null)
+ ? zss.CurrentSegment
+ : 0;
+
+ Int64 SizeOfCentralDirectory = Finish - Start;
+
+ int countOfEntries = CountEntries(entries);
+
+ bool needZip64CentralDirectory =
+ zip64 == Zip64Option.Always ||
+ countOfEntries >= 0xFFFF ||
+ SizeOfCentralDirectory > 0xFFFFFFFF ||
+ Start > 0xFFFFFFFF;
+
+ byte[] a2 = null;
+
+ // emit ZIP64 extensions as required
+ if (needZip64CentralDirectory)
+ {
+ if (zip64 == Zip64Option.Never)
+ {
+#if NETCF
+ throw new ZipException("The archive requires a ZIP64 Central Directory. Consider enabling ZIP64 extensions.");
+#else
+ System.Diagnostics.StackFrame sf = new System.Diagnostics.StackFrame(1);
+ if (sf.GetMethod().DeclaringType == typeof(ZipFile))
+ throw new ZipException("The archive requires a ZIP64 Central Directory. Consider setting the ZipFile.UseZip64WhenSaving property.");
+ else
+ throw new ZipException("The archive requires a ZIP64 Central Directory. Consider setting the ZipOutputStream.EnableZip64 property.");
+#endif
+
+ }
+
+ var a = GenZip64EndOfCentralDirectory(Start, Finish, countOfEntries, numSegments);
+ a2 = GenCentralDirectoryFooter(Start, Finish, zip64, countOfEntries, comment, container);
+ if (startSegment != 0)
+ {
+ UInt32 thisSegment = zss.ComputeSegment(a.Length + a2.Length);
+ int i = 16;
+ // number of this disk
+ Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
+ i += 4;
+ // number of the disk with the start of the central directory
+ //Array.Copy(BitConverter.GetBytes(startSegment), 0, a, i, 4);
+ Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
+
+ i = 60;
+ // offset 60
+ // number of the disk with the start of the zip64 eocd
+ Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
+ i += 4;
+ i += 8;
+
+ // offset 72
+ // total number of disks
+ Array.Copy(BitConverter.GetBytes(thisSegment), 0, a, i, 4);
+ }
+ s.Write(a, 0, a.Length);
+ }
+ else
+ a2 = GenCentralDirectoryFooter(Start, Finish, zip64, countOfEntries, comment, container);
+
+
+ // now, the regular footer
+ if (startSegment != 0)
+ {
+ // The assumption is the central directory is never split across
+ // segment boundaries.
+
+ UInt16 thisSegment = (UInt16) zss.ComputeSegment(a2.Length);
+ int i = 4;
+ // number of this disk
+ Array.Copy(BitConverter.GetBytes(thisSegment), 0, a2, i, 2);
+ i += 2;
+ // number of the disk with the start of the central directory
+ //Array.Copy(BitConverter.GetBytes((UInt16)startSegment), 0, a2, i, 2);
+ Array.Copy(BitConverter.GetBytes(thisSegment), 0, a2, i, 2);
+ i += 2;
+ }
+
+ s.Write(a2, 0, a2.Length);
+
+ // reset the contiguous write property if necessary
+ if (zss != null)
+ zss.ContiguousWrite = false;
+
+ return needZip64CentralDirectory;
+ }
+
+
+ private static System.Text.Encoding GetEncoding(ZipContainer container, string t)
+ {
+ switch (container.AlternateEncodingUsage)
+ {
+ case ZipOption.Always:
+ return container.AlternateEncoding;
+ case ZipOption.Never:
+ return container.DefaultEncoding;
+ }
+
+ // AsNecessary is in force
+ var e = container.DefaultEncoding;
+ if (t == null) return e;
+
+ var bytes = e.GetBytes(t);
+ var t2 = e.GetString(bytes,0,bytes.Length);
+ if (t2.Equals(t)) return e;
+ return container.AlternateEncoding;
+ }
+
+
+
+ private static byte[] GenCentralDirectoryFooter(long StartOfCentralDirectory,
+ long EndOfCentralDirectory,
+ Zip64Option zip64,
+ int entryCount,
+ string comment,
+ ZipContainer container)
+ {
+ System.Text.Encoding encoding = GetEncoding(container, comment);
+ int j = 0;
+ int bufferLength = 22;
+ byte[] block = null;
+ Int16 commentLength = 0;
+ if ((comment != null) && (comment.Length != 0))
+ {
+ block = encoding.GetBytes(comment);
+ commentLength = (Int16)block.Length;
+ }
+ bufferLength += commentLength;
+ byte[] bytes = new byte[bufferLength];
+
+ int i = 0;
+ // signature
+ byte[] sig = BitConverter.GetBytes(ZipConstants.EndOfCentralDirectorySignature);
+ Array.Copy(sig, 0, bytes, i, 4);
+ i+=4;
+
+ // number of this disk
+ // (this number may change later)
+ bytes[i++] = 0;
+ bytes[i++] = 0;
+
+ // number of the disk with the start of the central directory
+ // (this number may change later)
+ bytes[i++] = 0;
+ bytes[i++] = 0;
+
+ // handle ZIP64 extensions for the end-of-central-directory
+ if (entryCount >= 0xFFFF || zip64 == Zip64Option.Always)
+ {
+ // the ZIP64 version.
+ for (j = 0; j < 4; j++)
+ bytes[i++] = 0xFF;
+ }
+ else
+ {
+ // the standard version.
+ // total number of entries in the central dir on this disk
+ bytes[i++] = (byte)(entryCount & 0x00FF);
+ bytes[i++] = (byte)((entryCount & 0xFF00) >> 8);
+
+ // total number of entries in the central directory
+ bytes[i++] = (byte)(entryCount & 0x00FF);
+ bytes[i++] = (byte)((entryCount & 0xFF00) >> 8);
+ }
+
+ // size of the central directory
+ Int64 SizeOfCentralDirectory = EndOfCentralDirectory - StartOfCentralDirectory;
+
+ if (SizeOfCentralDirectory >= 0xFFFFFFFF || StartOfCentralDirectory >= 0xFFFFFFFF)
+ {
+ // The actual data is in the ZIP64 central directory structure
+ for (j = 0; j < 8; j++)
+ bytes[i++] = 0xFF;
+ }
+ else
+ {
+ // size of the central directory (we just get the low 4 bytes)
+ bytes[i++] = (byte)(SizeOfCentralDirectory & 0x000000FF);
+ bytes[i++] = (byte)((SizeOfCentralDirectory & 0x0000FF00) >> 8);
+ bytes[i++] = (byte)((SizeOfCentralDirectory & 0x00FF0000) >> 16);
+ bytes[i++] = (byte)((SizeOfCentralDirectory & 0xFF000000) >> 24);
+
+ // offset of the start of the central directory (we just get the low 4 bytes)
+ bytes[i++] = (byte)(StartOfCentralDirectory & 0x000000FF);
+ bytes[i++] = (byte)((StartOfCentralDirectory & 0x0000FF00) >> 8);
+ bytes[i++] = (byte)((StartOfCentralDirectory & 0x00FF0000) >> 16);
+ bytes[i++] = (byte)((StartOfCentralDirectory & 0xFF000000) >> 24);
+ }
+
+
+ // zip archive comment
+ if ((comment == null) || (comment.Length == 0))
+ {
+ // no comment!
+ bytes[i++] = (byte)0;
+ bytes[i++] = (byte)0;
+ }
+ else
+ {
+ // the size of our buffer defines the max length of the comment we can write
+ if (commentLength + i + 2 > bytes.Length) commentLength = (Int16)(bytes.Length - i - 2);
+ bytes[i++] = (byte)(commentLength & 0x00FF);
+ bytes[i++] = (byte)((commentLength & 0xFF00) >> 8);
+
+ if (commentLength != 0)
+ {
+ // now actually write the comment itself into the byte buffer
+ for (j = 0; (j < commentLength) && (i + j < bytes.Length); j++)
+ {
+ bytes[i + j] = block[j];
+ }
+ i += j;
+ }
+ }
+
+ // s.Write(bytes, 0, i);
+ return bytes;
+ }
+
+
+
+ private static byte[] GenZip64EndOfCentralDirectory(long StartOfCentralDirectory,
+ long EndOfCentralDirectory,
+ int entryCount,
+ uint numSegments)
+ {
+ const int bufferLength = 12 + 44 + 20;
+
+ byte[] bytes = new byte[bufferLength];
+
+ int i = 0;
+ // signature
+ byte[] sig = BitConverter.GetBytes(ZipConstants.Zip64EndOfCentralDirectoryRecordSignature);
+ Array.Copy(sig, 0, bytes, i, 4);
+ i+=4;
+
+ // There is a possibility to include "Extensible" data in the zip64
+ // end-of-central-dir record. I cannot figure out what it might be used to
+ // store, so the size of this record is always fixed. Maybe it is used for
+ // strong encryption data? That is for another day.
+ long DataSize = 44;
+ Array.Copy(BitConverter.GetBytes(DataSize), 0, bytes, i, 8);
+ i += 8;
+
+ // offset 12
+ // VersionMadeBy = 45;
+ bytes[i++] = 45;
+ bytes[i++] = 0x00;
+
+ // VersionNeededToExtract = 45;
+ bytes[i++] = 45;
+ bytes[i++] = 0x00;
+
+ // offset 16
+ // number of the disk, and the disk with the start of the central dir.
+ // (this may change later)
+ for (int j = 0; j < 8; j++)
+ bytes[i++] = 0x00;
+
+ // offset 24
+ long numberOfEntries = entryCount;
+ Array.Copy(BitConverter.GetBytes(numberOfEntries), 0, bytes, i, 8);
+ i += 8;
+ Array.Copy(BitConverter.GetBytes(numberOfEntries), 0, bytes, i, 8);
+ i += 8;
+
+ // offset 40
+ Int64 SizeofCentraldirectory = EndOfCentralDirectory - StartOfCentralDirectory;
+ Array.Copy(BitConverter.GetBytes(SizeofCentraldirectory), 0, bytes, i, 8);
+ i += 8;
+ Array.Copy(BitConverter.GetBytes(StartOfCentralDirectory), 0, bytes, i, 8);
+ i += 8;
+
+ // offset 56
+ // now, the locator
+ // signature
+ sig = BitConverter.GetBytes(ZipConstants.Zip64EndOfCentralDirectoryLocatorSignature);
+ Array.Copy(sig, 0, bytes, i, 4);
+ i+=4;
+
+ // offset 60
+ // number of the disk with the start of the zip64 eocd
+ // (this will change later) (it will?)
+ uint x2 = (numSegments==0)?0:(uint)(numSegments-1);
+ Array.Copy(BitConverter.GetBytes(x2), 0, bytes, i, 4);
+ i+=4;
+
+ // offset 64
+ // relative offset of the zip64 eocd
+ Array.Copy(BitConverter.GetBytes(EndOfCentralDirectory), 0, bytes, i, 8);
+ i += 8;
+
+ // offset 72
+ // total number of disks
+ // (this will change later)
+ Array.Copy(BitConverter.GetBytes(numSegments), 0, bytes, i, 4);
+ i+=4;
+
+ return bytes;
+ }
+
+
+
+ private static int CountEntries(ICollection<ZipEntry> _entries)
+ {
+ // Cannot just emit _entries.Count, because some of the entries
+ // may have been skipped.
+ int count = 0;
+ foreach (var entry in _entries)
+ if (entry.IncludedInMostRecentSave) count++;
+ return count;
+ }
+
+
+
+
+ }
+}
--- /dev/null
+// ZipFile.saveSelfExtractor.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2008-2011 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-August-10 19:22:46>
+//
+// ------------------------------------------------------------------
+//
+// This is a the source module that implements the stuff for saving to a
+// self-extracting Zip archive.
+//
+// ZipFile is set up as a "partial class" - defined in multiple .cs source modules.
+// This is one of the source modules for the ZipFile class.
+//
+// Here's the design: The self-extracting zip file is just a regular managed EXE
+// file, with embedded resources. The managed code logic instantiates a ZipFile, and
+// then extracts each entry. The embedded resources include the zip archive content,
+// as well as the Zip library itself. The latter is required so that self-extracting
+// can work on any machine, whether or not it has the DotNetZip library installed on
+// it.
+//
+// What we need to do is create the animal I just described, within a method on the
+// ZipFile class. This source module provides that capability. The method is
+// SaveSelfExtractor().
+//
+// The way the method works: it uses the programmatic interface to the csc.exe
+// compiler, Microsoft.CSharp.CSharpCodeProvider, to compile "boilerplate"
+// extraction logic into a new assembly. As part of that compile, we embed within
+// that assembly the zip archive itself, as well as the Zip library.
+//
+// Therefore we need to first save to a temporary zip file, then produce the exe.
+//
+// There are a few twists.
+//
+// The Visual Studio Project structure is a little weird. There are code files
+// that ARE NOT compiled during a normal build of the VS Solution. They are
+// marked as embedded resources. These are the various "boilerplate" modules that
+// are used in the self-extractor. These modules are: WinFormsSelfExtractorStub.cs
+// WinFormsSelfExtractorStub.Designer.cs CommandLineSelfExtractorStub.cs
+// PasswordDialog.cs PasswordDialog.Designer.cs
+//
+// At design time, if you want to modify the way the GUI looks, you have to
+// mark those modules to have a "compile" build action. Then tweak em, test,
+// etc. Then again mark them as "Embedded resource".
+//
+// ------------------------------------------------------------------
+
+using System;
+using System.Reflection;
+using System.IO;
+using System.Collections.Generic;
+
+
+namespace Ionic.Zip
+{
+#if !NO_SFX
+ /// <summary>
+ /// An enum that provides the different self-extractor flavors
+ /// </summary>
+ internal enum SelfExtractorFlavor
+ {
+ /// <summary>
+ /// A self-extracting zip archive that runs from the console or
+ /// command line.
+ /// </summary>
+ ConsoleApplication = 0,
+
+ /// <summary>
+ /// A self-extracting zip archive that presents a graphical user
+ /// interface when it is executed.
+ /// </summary>
+ WinFormsApplication,
+ }
+
+ /// <summary>
+ /// The options for generating a self-extracting archive.
+ /// </summary>
+ internal class SelfExtractorSaveOptions
+ {
+ /// <summary>
+ /// The type of SFX to create.
+ /// </summary>
+ public SelfExtractorFlavor Flavor
+ {
+ get;
+ set;
+ }
+
+ /// <summary>
+ /// The command to run after extraction.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This is optional. Leave it empty (<c>null</c> in C# or <c>Nothing</c> in
+ /// VB) to run no command after extraction.
+ /// </para>
+ ///
+ /// <para>
+ /// If it is non-empty, the SFX will execute the command specified in this
+ /// string on the user's machine, and using the extract directory as the
+ /// working directory for the process, after unpacking the archive. The
+ /// program to execute can include a path, if you like. If you want to execute
+ /// a program that accepts arguments, specify the program name, followed by a
+ /// space, and then the arguments for the program, each separated by a space,
+ /// just as you would on a normal command line. Example: <c>program.exe arg1
+ /// arg2</c>. The string prior to the first space will be taken as the
+ /// program name, and the string following the first space specifies the
+ /// arguments to the program.
+ /// </para>
+ ///
+ /// <para>
+ /// If you want to execute a program that has a space in the name or path of
+ /// the file, surround the program name in double-quotes. The first character
+ /// of the command line should be a double-quote character, and there must be
+ /// a matching double-quote following the end of the program file name. Any
+ /// optional arguments to the program follow that, separated by
+ /// spaces. Example: <c>"c:\project files\program name.exe" arg1 arg2</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// If the flavor of the SFX is <c>SelfExtractorFlavor.ConsoleApplication</c>,
+ /// then the SFX starts a new process, using this string as the post-extract
+ /// command line. The SFX waits for the process to exit. The exit code of
+ /// the post-extract command line is returned as the exit code of the
+ /// command-line self-extractor exe. A non-zero exit code is typically used to
+ /// indicated a failure by the program. In the case of an SFX, a non-zero exit
+ /// code may indicate a failure during extraction, OR, it may indicate a
+ /// failure of the run-after-extract program if specified, OR, it may indicate
+ /// the run-after-extract program could not be fuond. There is no way to
+ /// distinguish these conditions from the calling shell, aside from parsing
+ /// the output of the SFX. If you have Quiet set to <c>true</c>, you may not
+ /// see error messages, if a problem occurs.
+ /// </para>
+ ///
+ /// <para>
+ /// If the flavor of the SFX is
+ /// <c>SelfExtractorFlavor.WinFormsApplication</c>, then the SFX starts a new
+ /// process, using this string as the post-extract command line, and using the
+ /// extract directory as the working directory for the process. The SFX does
+ /// not wait for the command to complete, and does not check the exit code of
+ /// the program. If the run-after-extract program cannot be fuond, a message
+ /// box is displayed indicating that fact.
+ /// </para>
+ ///
+ /// <para>
+ /// You can specify environment variables within this string, with a format like
+ /// <c>%NAME%</c>. The value of these variables will be expanded at the time
+ /// the SFX is run. Example: <c>%WINDIR%\system32\xcopy.exe</c> may expand at
+ /// runtime to <c>c:\Windows\System32\xcopy.exe</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// By combining this with the <c>RemoveUnpackedFilesAfterExecute</c>
+ /// flag, you can create an SFX that extracts itself, runs a file that
+ /// was extracted, then deletes all the files that were extracted. If
+ /// you want it to run "invisibly" then set <c>Flavor</c> to
+ /// <c>SelfExtractorFlavor.ConsoleApplication</c>, and set <c>Quiet</c>
+ /// to true. The user running such an EXE will see a console window
+ /// appear, then disappear quickly. You may also want to specify the
+ /// default extract location, with <c>DefaultExtractDirectory</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// If you set <c>Flavor</c> to
+ /// <c>SelfExtractorFlavor.WinFormsApplication</c>, and set <c>Quiet</c> to
+ /// true, then a GUI with progressbars is displayed, but it is
+ /// "non-interactive" - it accepts no input from the user. Instead the SFX
+ /// just automatically unpacks and exits.
+ /// </para>
+ ///
+ /// </remarks>
+ public String PostExtractCommandLine
+ {
+ get;
+ set;
+ }
+
+ /// <summary>
+ /// The default extract directory the user will see when
+ /// running the self-extracting archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Passing null (or Nothing in VB) here will cause the Self Extractor to use
+ /// the the user's personal directory (<see
+ /// cref="Environment.SpecialFolder.Personal"/>) for the default extract
+ /// location.
+ /// </para>
+ ///
+ /// <para>
+ /// This is only a default location. The actual extract location will be
+ /// settable on the command line when the SFX is executed.
+ /// </para>
+ ///
+ /// <para>
+ /// You can specify environment variables within this string,
+ /// with <c>%NAME%</c>. The value of these variables will be
+ /// expanded at the time the SFX is run. Example:
+ /// <c>%USERPROFILE%\Documents\unpack</c> may expand at runtime to
+ /// <c>c:\users\melvin\Documents\unpack</c>.
+ /// </para>
+ /// </remarks>
+ public String DefaultExtractDirectory
+ {
+ get;
+ set;
+ }
+
+ /// <summary>
+ /// The name of an .ico file in the filesystem to use for the application icon
+ /// for the generated SFX.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Normally, DotNetZip will embed an "zipped folder" icon into the generated
+ /// SFX. If you prefer to use a different icon, you can specify it here. It
+ /// should be a .ico file. This file is passed as the <c>/win32icon</c>
+ /// option to the csc.exe compiler when constructing the SFX file.
+ /// </para>
+ /// </remarks>
+ ///
+ public string IconFile
+ {
+ get;
+ set;
+ }
+
+ /// <summary>
+ /// Whether the ConsoleApplication SFX will be quiet during extraction.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This option affects the way the generated SFX runs. By default it is
+ /// false. When you set it to true,...
+ /// </para>
+ ///
+ /// <list type="table">
+ /// <listheader>
+ /// <term>Flavor</term>
+ /// <description>Behavior</description>
+ /// </listheader>
+ ///
+ /// <item>
+ /// <term><c>ConsoleApplication</c></term>
+ /// <description><para>no messages will be emitted during successful
+ /// operation.</para> <para> Double-clicking the SFX in Windows
+ /// Explorer or as an attachment in an email will cause a console
+ /// window to appear briefly, before it disappears. If you run the
+ /// ConsoleApplication SFX from the cmd.exe prompt, it runs as a
+ /// normal console app; by default, because it is quiet, it displays
+ /// no messages to the console. If you pass the -v+ command line
+ /// argument to the Console SFX when you run it, you will get verbose
+ /// messages to the console. </para>
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term><c>WinFormsApplication</c></term>
+ /// <description>the SFX extracts automatically when the application
+ /// is launched, with no additional user input.
+ /// </description>
+ /// </item>
+ ///
+ /// </list>
+ ///
+ /// <para>
+ /// When you set it to false,...
+ /// </para>
+ ///
+ /// <list type="table">
+ /// <listheader>
+ /// <term>Flavor</term>
+ /// <description>Behavior</description>
+ /// </listheader>
+ ///
+ /// <item>
+ /// <term><c>ConsoleApplication</c></term>
+ /// <description><para>the extractor will emit a
+ /// message to the console for each entry extracted.</para>
+ /// <para>
+ /// When double-clicking to launch the SFX, the console window will
+ /// remain, and the SFX will emit a message for each file as it
+ /// extracts. The messages fly by quickly, they won't be easily
+ /// readable, unless the extracted files are fairly large.
+ /// </para>
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term><c>WinFormsApplication</c></term>
+ /// <description>the SFX presents a forms UI and allows the user to select
+ /// options before extracting.
+ /// </description>
+ /// </item>
+ ///
+ /// </list>
+ ///
+ /// </remarks>
+ public bool Quiet
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// Specify what the self-extractor will do when extracting an entry
+ /// would overwrite an existing file.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// The default behavvior is to Throw.
+ /// </para>
+ /// </remarks>
+ public Ionic.Zip.ExtractExistingFileAction ExtractExistingFile
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// Whether to remove the files that have been unpacked, after executing the
+ /// PostExtractCommandLine.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// If true, and if there is a <see
+ /// cref="SelfExtractorSaveOptions.PostExtractCommandLine">
+ /// PostExtractCommandLine</see>, and if the command runs successfully,
+ /// then the files that the SFX unpacked will be removed, afterwards. If
+ /// the command does not complete successfully (non-zero return code),
+ /// that is interpreted as a failure, and the extracted files will not be
+ /// removed.
+ /// </para>
+ ///
+ /// <para>
+ /// Setting this flag, and setting <c>Flavor</c> to
+ /// <c>SelfExtractorFlavor.ConsoleApplication</c>, and setting <c>Quiet</c> to
+ /// true, results in an SFX that extracts itself, runs a file that was
+ /// extracted, then deletes all the files that were extracted, with no
+ /// intervention by the user. You may also want to specify the default
+ /// extract location, with <c>DefaultExtractDirectory</c>.
+ /// </para>
+ ///
+ /// </remarks>
+ public bool RemoveUnpackedFilesAfterExecute
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// The file version number to embed into the generated EXE. It will show up, for
+ /// example, during a mouseover in Windows Explorer.
+ /// </summary>
+ ///
+ public Version FileVersion
+ {
+ get;
+ set;
+ }
+
+ /// <summary>
+ /// The product version to embed into the generated EXE. It will show up, for
+ /// example, during a mouseover in Windows Explorer.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// You can use any arbitrary string, but a human-readable version number is
+ /// recommended. For example "v1.2 alpha" or "v4.2 RC2". If you specify nothing,
+ /// then there is no product version embedded into the EXE.
+ /// </remarks>
+ ///
+ public String ProductVersion
+ {
+ get;
+ set;
+ }
+
+ /// <summary>
+ /// The copyright notice, if any, to embed into the generated EXE.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// It will show up, for example, while viewing properties of the file in
+ /// Windows Explorer. You can use any arbitrary string, but typically you
+ /// want something like "Copyright © Dino Chiesa 2011".
+ /// </remarks>
+ ///
+ public String Copyright
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// The description to embed into the generated EXE.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Use any arbitrary string. This text will be displayed during a
+ /// mouseover in Windows Explorer. If you specify nothing, then the string
+ /// "DotNetZip SFX Archive" is embedded into the EXE as the description.
+ /// </remarks>
+ ///
+ public String Description
+ {
+ get;
+ set;
+ }
+
+ /// <summary>
+ /// The product name to embed into the generated EXE.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Use any arbitrary string. This text will be displayed
+ /// while viewing properties of the EXE file in
+ /// Windows Explorer.
+ /// </remarks>
+ ///
+ public String ProductName
+ {
+ get;
+ set;
+ }
+
+ /// <summary>
+ /// The title to display in the Window of a GUI SFX, while it extracts.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// By default the title show in the GUI window of a self-extractor
+ /// is "DotNetZip Self-extractor (http://DotNetZip.codeplex.com/)".
+ /// You can change that by setting this property before saving the SFX.
+ /// </para>
+ ///
+ /// <para>
+ /// This property has an effect only when producing a Self-extractor
+ /// of flavor <c>SelfExtractorFlavor.WinFormsApplication</c>.
+ /// </para>
+ /// </remarks>
+ ///
+ public String SfxExeWindowTitle
+ {
+ // workitem 12608
+ get;
+ set;
+ }
+
+ /// <summary>
+ /// Additional options for the csc.exe compiler, when producing the SFX
+ /// EXE.
+ /// </summary>
+ /// <exclude/>
+ public string AdditionalCompilerSwitches
+ {
+ get; set;
+ }
+ }
+
+
+
+
+ partial class ZipFile
+ {
+ class ExtractorSettings
+ {
+ public SelfExtractorFlavor Flavor;
+ public List<string> ReferencedAssemblies;
+ public List<string> CopyThroughResources;
+ public List<string> ResourcesToCompile;
+ }
+
+
+ private static ExtractorSettings[] SettingsList = {
+ new ExtractorSettings() {
+ Flavor = SelfExtractorFlavor.WinFormsApplication,
+ ReferencedAssemblies= new List<string>{
+ "System.dll", "System.Windows.Forms.dll", "System.Drawing.dll"},
+ CopyThroughResources = new List<string>{
+ "Ionic.Zip.WinFormsSelfExtractorStub.resources",
+ "Ionic.Zip.Forms.PasswordDialog.resources",
+ "Ionic.Zip.Forms.ZipContentsDialog.resources"},
+ ResourcesToCompile = new List<string>{
+ "WinFormsSelfExtractorStub.cs",
+ "WinFormsSelfExtractorStub.Designer.cs", // .Designer.cs?
+ "PasswordDialog.cs",
+ "PasswordDialog.Designer.cs", //.Designer.cs"
+ "ZipContentsDialog.cs",
+ "ZipContentsDialog.Designer.cs", //.Designer.cs"
+ "FolderBrowserDialogEx.cs",
+ }
+ },
+ new ExtractorSettings() {
+ Flavor = SelfExtractorFlavor.ConsoleApplication,
+ ReferencedAssemblies= new List<string> { "System.dll", },
+ CopyThroughResources = null,
+ ResourcesToCompile = new List<string>{"CommandLineSelfExtractorStub.cs"}
+ }
+ };
+
+
+
+ //string _defaultExtractLocation;
+ //string _postExtractCmdLine;
+ // string _SetDefaultLocationCode =
+ // "namespace Ionic.Zip { internal partial class WinFormsSelfExtractorStub { partial void _SetDefaultExtractLocation() {" +
+ // " txtExtractDirectory.Text = \"@@VALUE\"; } }}";
+
+
+
+ /// <summary>
+ /// Saves the ZipFile instance to a self-extracting zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// The generated exe image will execute on any machine that has the .NET
+ /// Framework 2.0 installed on it. The generated exe image is also a
+ /// valid ZIP file, readable with DotNetZip or another Zip library or tool
+ /// such as WinZip.
+ /// </para>
+ ///
+ /// <para>
+ /// There are two "flavors" of self-extracting archive. The
+ /// <c>WinFormsApplication</c> version will pop up a GUI and allow the
+ /// user to select a target directory into which to extract. There's also
+ /// a checkbox allowing the user to specify to overwrite existing files,
+ /// and another checkbox to allow the user to request that Explorer be
+ /// opened to see the extracted files after extraction. The other flavor
+ /// is <c>ConsoleApplication</c>. A self-extractor generated with that
+ /// flavor setting will run from the command line. It accepts command-line
+ /// options to set the overwrite behavior, and to specify the target
+ /// extraction directory.
+ /// </para>
+ ///
+ /// <para>
+ /// There are a few temporary files created during the saving to a
+ /// self-extracting zip. These files are created in the directory pointed
+ /// to by <see cref="ZipFile.TempFileFolder"/>, which defaults to <see
+ /// cref="System.IO.Path.GetTempPath"/>. These temporary files are
+ /// removed upon successful completion of this method.
+ /// </para>
+ ///
+ /// <para>
+ /// When a user runs the WinForms SFX, the user's personal directory (<see
+ /// cref="Environment.SpecialFolder.Personal">Environment.SpecialFolder.Personal</see>)
+ /// will be used as the default extract location. If you want to set the
+ /// default extract location, you should use the other overload of
+ /// <c>SaveSelfExtractor()</c>/ The user who runs the SFX will have the
+ /// opportunity to change the extract directory before extracting. When
+ /// the user runs the Command-Line SFX, the user must explicitly specify
+ /// the directory to which to extract. The .NET Framework 2.0 is required
+ /// on the computer when the self-extracting archive is run.
+ /// </para>
+ ///
+ /// <para>
+ /// NB: This method is not available in the version of DotNetZip build for
+ /// the .NET Compact Framework, nor in the "Reduced" DotNetZip library.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// <code>
+ /// string DirectoryPath = "c:\\Documents\\Project7";
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// zip.AddDirectory(DirectoryPath, System.IO.Path.GetFileName(DirectoryPath));
+ /// zip.Comment = "This will be embedded into a self-extracting console-based exe";
+ /// zip.SaveSelfExtractor("archive.exe", SelfExtractorFlavor.ConsoleApplication);
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Dim DirectoryPath As String = "c:\Documents\Project7"
+ /// Using zip As New ZipFile()
+ /// zip.AddDirectory(DirectoryPath, System.IO.Path.GetFileName(DirectoryPath))
+ /// zip.Comment = "This will be embedded into a self-extracting console-based exe"
+ /// zip.SaveSelfExtractor("archive.exe", SelfExtractorFlavor.ConsoleApplication)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="exeToGenerate">
+ /// a pathname, possibly fully qualified, to be created. Typically it
+ /// will end in an .exe extension.</param>
+ /// <param name="flavor">
+ /// Indicates whether a Winforms or Console self-extractor is
+ /// desired. </param>
+ public void SaveSelfExtractor(string exeToGenerate, SelfExtractorFlavor flavor)
+ {
+ SelfExtractorSaveOptions options = new SelfExtractorSaveOptions();
+ options.Flavor = flavor;
+ SaveSelfExtractor(exeToGenerate, options);
+ }
+
+
+
+ /// <summary>
+ /// Saves the ZipFile instance to a self-extracting zip archive, using
+ /// the specified save options.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method saves a self extracting archive, using the specified save
+ /// options. These options include the flavor of the SFX, the default extract
+ /// directory, the icon file, and so on. See the documentation
+ /// for <see cref="SaveSelfExtractor(string , SelfExtractorFlavor)"/> for more
+ /// details.
+ /// </para>
+ ///
+ /// <para>
+ /// The user who runs the SFX will have the opportunity to change the extract
+ /// directory before extracting. If at the time of extraction, the specified
+ /// directory does not exist, the SFX will create the directory before
+ /// extracting the files.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example saves a WinForms-based self-extracting archive EXE that
+ /// will use c:\ExtractHere as the default extract location. The C# code
+ /// shows syntax for .NET 3.0, which uses an object initializer for
+ /// the SelfExtractorOptions object.
+ /// <code>
+ /// string DirectoryPath = "c:\\Documents\\Project7";
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// zip.AddDirectory(DirectoryPath, System.IO.Path.GetFileName(DirectoryPath));
+ /// zip.Comment = "This will be embedded into a self-extracting WinForms-based exe";
+ /// var options = new SelfExtractorOptions
+ /// {
+ /// Flavor = SelfExtractorFlavor.WinFormsApplication,
+ /// DefaultExtractDirectory = "%USERPROFILE%\\ExtractHere",
+ /// PostExtractCommandLine = ExeToRunAfterExtract,
+ /// SfxExeWindowTitle = "My Custom Window Title",
+ /// RemoveUnpackedFilesAfterExecute = true
+ /// };
+ /// zip.SaveSelfExtractor("archive.exe", options);
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Dim DirectoryPath As String = "c:\Documents\Project7"
+ /// Using zip As New ZipFile()
+ /// zip.AddDirectory(DirectoryPath, System.IO.Path.GetFileName(DirectoryPath))
+ /// zip.Comment = "This will be embedded into a self-extracting console-based exe"
+ /// Dim options As New SelfExtractorOptions()
+ /// options.Flavor = SelfExtractorFlavor.WinFormsApplication
+ /// options.DefaultExtractDirectory = "%USERPROFILE%\\ExtractHere"
+ /// options.PostExtractCommandLine = ExeToRunAfterExtract
+ /// options.SfxExeWindowTitle = "My Custom Window Title"
+ /// options.RemoveUnpackedFilesAfterExecute = True
+ /// zip.SaveSelfExtractor("archive.exe", options)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="exeToGenerate">The name of the EXE to generate.</param>
+ /// <param name="options">provides the options for creating the
+ /// Self-extracting archive.</param>
+ public void SaveSelfExtractor(string exeToGenerate, SelfExtractorSaveOptions options)
+ {
+ // Save an SFX that is both an EXE and a ZIP.
+
+ // Check for the case where we are re-saving a zip archive
+ // that was originally instantiated with a stream. In that case,
+ // the _name will be null. If so, we set _writestream to null,
+ // which insures that we'll cons up a new WriteStream (with a filesystem
+ // file backing it) in the Save() method.
+ if (_name == null)
+ _writestream = null;
+
+ _SavingSfx = true;
+ _name = exeToGenerate;
+ if (Directory.Exists(_name))
+ throw new ZipException("Bad Directory", new System.ArgumentException("That name specifies an existing directory. Please specify a filename.", "exeToGenerate"));
+ _contentsChanged = true;
+ _fileAlreadyExists = File.Exists(_name);
+
+ _SaveSfxStub(exeToGenerate, options);
+
+ Save();
+ _SavingSfx = false;
+ }
+
+
+
+
+ private static void ExtractResourceToFile(Assembly a, string resourceName, string filename)
+ {
+ int n = 0;
+ byte[] bytes = new byte[1024];
+ using (Stream instream = a.GetManifestResourceStream(resourceName))
+ {
+ if (instream == null)
+ throw new ZipException(String.Format("missing resource '{0}'", resourceName));
+
+ using (FileStream outstream = File.OpenWrite(filename))
+ {
+ do
+ {
+ n = instream.Read(bytes, 0, bytes.Length);
+ outstream.Write(bytes, 0, n);
+ } while (n > 0);
+ }
+ }
+ }
+
+
+ private void _SaveSfxStub(string exeToGenerate, SelfExtractorSaveOptions options)
+ {
+ string nameOfIconFile = null;
+ string stubExe = null;
+ string unpackedResourceDir = null;
+ string tmpDir = null;
+ try
+ {
+ if (File.Exists(exeToGenerate))
+ {
+ if (Verbose) StatusMessageTextWriter.WriteLine("The existing file ({0}) will be overwritten.", exeToGenerate);
+ }
+ if (!exeToGenerate.EndsWith(".exe"))
+ {
+ if (Verbose) StatusMessageTextWriter.WriteLine("Warning: The generated self-extracting file will not have an .exe extension.");
+ }
+
+ // workitem 10553
+ tmpDir = TempFileFolder ?? Path.GetDirectoryName(exeToGenerate);
+ stubExe = GenerateTempPathname(tmpDir, "exe");
+
+ // get the Ionic.Zip assembly
+ Assembly a1 = typeof(ZipFile).Assembly;
+
+ using (var csharp = new Microsoft.CSharp.CSharpCodeProvider
+ (new Dictionary<string,string>() { { "CompilerVersion", "v2.0" } })) {
+
+ // The following is a perfect opportunity for a linq query, but
+ // I cannot use it. DotNetZip needs to run on .NET 2.0,
+ // and using LINQ would break that. Here's what it would look
+ // like:
+ //
+ // var settings = (from x in SettingsList
+ // where x.Flavor == flavor
+ // select x).First();
+
+ ExtractorSettings settings = null;
+ foreach (var x in SettingsList)
+ {
+ if (x.Flavor == options.Flavor)
+ {
+ settings = x;
+ break;
+ }
+ }
+
+ // sanity check; should never happen
+ if (settings == null)
+ throw new BadStateException(String.Format("While saving a Self-Extracting Zip, Cannot find that flavor ({0})?", options.Flavor));
+
+ // This is the list of referenced assemblies. Ionic.Zip is
+ // needed here. Also if it is the winforms (gui) extractor, we
+ // need other referenced assemblies, like
+ // System.Windows.Forms.dll, etc.
+ var cp = new System.CodeDom.Compiler.CompilerParameters();
+ cp.ReferencedAssemblies.Add(a1.Location);
+ if (settings.ReferencedAssemblies != null)
+ foreach (string ra in settings.ReferencedAssemblies)
+ cp.ReferencedAssemblies.Add(ra);
+
+ cp.GenerateInMemory = false;
+ cp.GenerateExecutable = true;
+ cp.IncludeDebugInformation = false;
+ cp.CompilerOptions = "";
+
+ Assembly a2 = Assembly.GetExecutingAssembly();
+
+ // Use this to concatenate all the source code resources into a
+ // single module.
+ var sb = new System.Text.StringBuilder();
+
+ // In case there are compiler errors later, we allocate a source
+ // file name now. If errors are detected, we'll spool the source
+ // code as well as the errors (in comments) into that filename,
+ // and throw an exception with the filename. Makes it easier to
+ // diagnose. This should be rare; most errors happen only
+ // during devlpmt of DotNetZip itself, but there are rare
+ // occasions when they occur in other cases.
+ string sourceFile = GenerateTempPathname(tmpDir, "cs");
+
+
+ // // debugging: enumerate the resources in this assembly
+ // Console.WriteLine("Resources in this assembly:");
+ // foreach (string rsrc in a2.GetManifestResourceNames())
+ // {
+ // Console.WriteLine(rsrc);
+ // }
+ // Console.WriteLine();
+
+
+ // all the source code is embedded in the DLL as a zip file.
+ using (ZipFile zip = ZipFile.Read(a2.GetManifestResourceStream("Ionic.Zip.Resources.ZippedResources.zip")))
+ {
+ // // debugging: enumerate the files in the embedded zip
+ // Console.WriteLine("Entries in the embbedded zip:");
+ // foreach (ZipEntry entry in zip)
+ // {
+ // Console.WriteLine(entry.FileName);
+ // }
+ // Console.WriteLine();
+
+ unpackedResourceDir = GenerateTempPathname(tmpDir, "tmp");
+
+ if (String.IsNullOrEmpty(options.IconFile))
+ {
+ // Use the ico file that is embedded into the Ionic.Zip
+ // DLL itself. To do this we must unpack the icon to
+ // the filesystem, in order to specify it on the cmdline
+ // of csc.exe. This method will remove the unpacked
+ // file later.
+ System.IO.Directory.CreateDirectory(unpackedResourceDir);
+ ZipEntry e = zip["zippedFile.ico"];
+ // Must not extract a readonly file - it will be impossible to
+ // delete later.
+ if ((e.Attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
+ e.Attributes ^= FileAttributes.ReadOnly;
+ e.Extract(unpackedResourceDir);
+ nameOfIconFile = Path.Combine(unpackedResourceDir, "zippedFile.ico");
+ cp.CompilerOptions += String.Format("/win32icon:\"{0}\"", nameOfIconFile);
+ }
+ else
+ cp.CompilerOptions += String.Format("/win32icon:\"{0}\"", options.IconFile);
+
+ cp.OutputAssembly = stubExe;
+
+ if (options.Flavor == SelfExtractorFlavor.WinFormsApplication)
+ cp.CompilerOptions += " /target:winexe";
+
+ if (!String.IsNullOrEmpty(options.AdditionalCompilerSwitches))
+ cp.CompilerOptions += " " + options.AdditionalCompilerSwitches;
+
+ if (String.IsNullOrEmpty(cp.CompilerOptions))
+ cp.CompilerOptions = null;
+
+ if ((settings.CopyThroughResources != null) && (settings.CopyThroughResources.Count != 0))
+ {
+ if (!Directory.Exists(unpackedResourceDir)) System.IO.Directory.CreateDirectory(unpackedResourceDir);
+ foreach (string re in settings.CopyThroughResources)
+ {
+ string filename = Path.Combine(unpackedResourceDir, re);
+
+ ExtractResourceToFile(a2, re, filename);
+ // add the file into the target assembly as an embedded resource
+ cp.EmbeddedResources.Add(filename);
+ }
+ }
+
+ // add the Ionic.Utils.Zip DLL as an embedded resource
+ cp.EmbeddedResources.Add(a1.Location);
+
+ // file header
+ sb.Append("// " + Path.GetFileName(sourceFile) + "\n")
+ .Append("// --------------------------------------------\n//\n")
+ .Append("// This SFX source file was generated by DotNetZip ")
+ .Append(ZipFile.LibraryVersion.ToString())
+ .Append("\n// at ")
+ .Append(System.DateTime.Now.ToString("yyyy MMMM dd HH:mm:ss"))
+ .Append("\n//\n// --------------------------------------------\n\n\n");
+
+ // assembly attributes
+ if (!String.IsNullOrEmpty(options.Description))
+ sb.Append("[assembly: System.Reflection.AssemblyTitle(\""
+ + options.Description.Replace("\"", "")
+ + "\")]\n");
+ else
+ sb.Append("[assembly: System.Reflection.AssemblyTitle(\"DotNetZip SFX Archive\")]\n");
+
+ if (!String.IsNullOrEmpty(options.ProductVersion))
+ sb.Append("[assembly: System.Reflection.AssemblyInformationalVersion(\""
+ + options.ProductVersion.Replace("\"", "")
+ + "\")]\n");
+
+ // workitem
+ string copyright =
+ (String.IsNullOrEmpty(options.Copyright))
+ ? "Extractor: Copyright © Dino Chiesa 2008-2011"
+ : options.Copyright.Replace("\"", "");
+
+ if (!String.IsNullOrEmpty(options.ProductName))
+ sb.Append("[assembly: System.Reflection.AssemblyProduct(\"")
+ .Append(options.ProductName.Replace("\"", ""))
+ .Append("\")]\n");
+ else
+ sb.Append("[assembly: System.Reflection.AssemblyProduct(\"DotNetZip\")]\n");
+
+
+ sb.Append("[assembly: System.Reflection.AssemblyCopyright(\"" + copyright + "\")]\n")
+ .Append(String.Format("[assembly: System.Reflection.AssemblyVersion(\"{0}\")]\n", ZipFile.LibraryVersion.ToString()));
+ if (options.FileVersion != null)
+ sb.Append(String.Format("[assembly: System.Reflection.AssemblyFileVersion(\"{0}\")]\n",
+ options.FileVersion.ToString()));
+
+ sb.Append("\n\n\n");
+
+ // Set the default extract location if it is available
+ string extractLoc = options.DefaultExtractDirectory;
+ if (extractLoc != null)
+ {
+ // remove double-quotes and replace slash with double-slash.
+ // This, because the value is going to be embedded into a
+ // cs file as a quoted string, and it needs to be escaped.
+ extractLoc = extractLoc.Replace("\"", "").Replace("\\", "\\\\");
+ }
+
+ string postExCmdLine = options.PostExtractCommandLine;
+ if (postExCmdLine != null)
+ {
+ postExCmdLine = postExCmdLine.Replace("\\", "\\\\");
+ postExCmdLine = postExCmdLine.Replace("\"", "\\\"");
+ }
+
+
+ foreach (string rc in settings.ResourcesToCompile)
+ {
+ using (Stream s = zip[rc].OpenReader())
+ {
+ if (s == null)
+ throw new ZipException(String.Format("missing resource '{0}'", rc));
+ using (StreamReader sr = new StreamReader(s))
+ {
+ while (sr.Peek() >= 0)
+ {
+ string line = sr.ReadLine();
+ if (extractLoc != null)
+ line = line.Replace("@@EXTRACTLOCATION", extractLoc);
+
+ line = line.Replace("@@REMOVE_AFTER_EXECUTE", options.RemoveUnpackedFilesAfterExecute.ToString());
+ line = line.Replace("@@QUIET", options.Quiet.ToString());
+ if (!String.IsNullOrEmpty(options.SfxExeWindowTitle))
+
+ line = line.Replace("@@SFX_EXE_WINDOW_TITLE", options.SfxExeWindowTitle);
+
+ line = line.Replace("@@EXTRACT_EXISTING_FILE", ((int)options.ExtractExistingFile).ToString());
+
+ if (postExCmdLine != null)
+ line = line.Replace("@@POST_UNPACK_CMD_LINE", postExCmdLine);
+
+ sb.Append(line).Append("\n");
+ }
+ }
+ sb.Append("\n\n");
+ }
+ }
+ }
+
+ string LiteralSource = sb.ToString();
+
+#if DEBUGSFX
+ // for debugging only
+ string sourceModule = GenerateTempPathname(tmpDir, "cs");
+ using (StreamWriter sw = File.CreateText(sourceModule))
+ {
+ sw.Write(LiteralSource);
+ }
+ Console.WriteLine("source: {0}", sourceModule);
+#endif
+
+ var cr = csharp.CompileAssemblyFromSource(cp, LiteralSource);
+
+
+ if (cr == null)
+ throw new SfxGenerationException("Cannot compile the extraction logic!");
+
+ if (Verbose)
+ foreach (string output in cr.Output)
+ StatusMessageTextWriter.WriteLine(output);
+
+ if (cr.Errors.Count != 0)
+ {
+ using (TextWriter tw = new StreamWriter(sourceFile))
+ {
+ // first, the source we compiled
+ tw.Write(LiteralSource);
+
+ // now, append the compile errors
+ tw.Write("\n\n\n// ------------------------------------------------------------------\n");
+ tw.Write("// Errors during compilation: \n//\n");
+ string p = Path.GetFileName(sourceFile);
+
+ foreach (System.CodeDom.Compiler.CompilerError error in cr.Errors)
+ {
+ tw.Write(String.Format("// {0}({1},{2}): {3} {4}: {5}\n//\n",
+ p, // 0
+ error.Line, // 1
+ error.Column, // 2
+ error.IsWarning ? "Warning" : "error", // 3
+ error.ErrorNumber, // 4
+ error.ErrorText)); // 5
+ }
+ }
+ throw new SfxGenerationException(String.Format("Errors compiling the extraction logic! {0}", sourceFile));
+ }
+
+ OnSaveEvent(ZipProgressEventType.Saving_AfterCompileSelfExtractor);
+
+ // Now, copy the resulting EXE image to the _writestream.
+ // Because this stub exe is being saved first, the effect will be to
+ // concatenate the exe and the zip data together.
+ using (System.IO.Stream input = System.IO.File.OpenRead(stubExe))
+ {
+ byte[] buffer = new byte[4000];
+ int n = 1;
+ while (n != 0)
+ {
+ n = input.Read(buffer, 0, buffer.Length);
+ if (n != 0)
+ WriteStream.Write(buffer, 0, n);
+ }
+ }
+ }
+
+ OnSaveEvent(ZipProgressEventType.Saving_AfterSaveTempArchive);
+ }
+ finally
+ {
+ try
+ {
+ if (Directory.Exists(unpackedResourceDir))
+ {
+ try { Directory.Delete(unpackedResourceDir, true); }
+ catch (System.IO.IOException exc1)
+ {
+ StatusMessageTextWriter.WriteLine("Warning: Exception: {0}", exc1);
+ }
+ }
+ if (File.Exists(stubExe))
+ {
+ try { File.Delete(stubExe); }
+ catch (System.IO.IOException exc1)
+ {
+ StatusMessageTextWriter.WriteLine("Warning: Exception: {0}", exc1);
+ }
+ }
+ }
+ catch (System.IO.IOException) { }
+ }
+
+ return;
+
+ }
+
+
+
+ internal static string GenerateTempPathname(string dir, string extension)
+ {
+ string candidate = null;
+ String AppName = System.Reflection.Assembly.GetExecutingAssembly().GetName().Name;
+ do
+ {
+ // workitem 13475
+ string uuid = System.Guid.NewGuid().ToString();
+
+ string Name = String.Format("{0}-{1}-{2}.{3}",
+ AppName, System.DateTime.Now.ToString("yyyyMMMdd-HHmmss"),
+ uuid, extension);
+ candidate = System.IO.Path.Combine(dir, Name);
+ } while (System.IO.File.Exists(candidate) || System.IO.Directory.Exists(candidate));
+
+ // The candidate path does not exist as a file or directory.
+ // It can now be created, as a file or directory.
+ return candidate;
+ }
+
+ }
+#endif
+}
--- /dev/null
+// ZipFile.Selector.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009-2010 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-August-06 09:35:58>
+//
+// ------------------------------------------------------------------
+//
+// This module defines methods in the ZipFile class associated to the FileFilter
+// capability - selecting files to add into the archive, or selecting entries to
+// retrieve from the archive based on criteria including the filename, size, date, or
+// attributes. It is something like a "poor man's LINQ". I included it into DotNetZip
+// because not everyone has .NET 3.5 yet. When using DotNetZip on .NET 3.5, the LINQ
+// query/selection will be superior.
+//
+// These methods are segregated into a different module to facilitate easy exclusion for
+// those people who wish to have a smaller library without this function.
+//
+// ------------------------------------------------------------------
+
+
+using System;
+using System.IO;
+using System.Collections.Generic;
+
+namespace Ionic.Zip
+{
+
+ partial class ZipFile
+ {
+ /// <summary>
+ /// Adds to the ZipFile a set of files from the current working directory on
+ /// disk, that conform to the specified criteria.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method selects files from the the current working directory matching
+ /// the specified criteria, and adds them to the ZipFile.
+ /// </para>
+ ///
+ /// <para>
+ /// Specify the criteria in statements of 3 elements: a noun, an operator, and
+ /// a value. Consider the string "name != *.doc" . The noun is "name". The
+ /// operator is "!=", implying "Not Equal". The value is "*.doc". That
+ /// criterion, in English, says "all files with a name that does not end in
+ /// the .doc extension."
+ /// </para>
+ ///
+ /// <para>
+ /// Supported nouns include "name" (or "filename") for the filename; "atime",
+ /// "mtime", and "ctime" for last access time, last modfied time, and created
+ /// time of the file, respectively; "attributes" (or "attrs") for the file
+ /// attributes; "size" (or "length") for the file length (uncompressed), and
+ /// "type" for the type of object, either a file or a directory. The
+ /// "attributes", "name" and "type" nouns both support = and != as operators.
+ /// The "size", "atime", "mtime", and "ctime" nouns support = and !=, and
+ /// >, >=, <, <= as well. The times are taken to be expressed in
+ /// local time.
+ /// </para>
+ ///
+ /// <para>
+ /// Specify values for the file attributes as a string with one or more of the
+ /// characters H,R,S,A,I,L in any order, implying file attributes of Hidden,
+ /// ReadOnly, System, Archive, NotContextIndexed, and ReparsePoint (symbolic
+ /// link) respectively.
+ /// </para>
+ ///
+ /// <para>
+ /// To specify a time, use YYYY-MM-DD-HH:mm:ss or YYYY/MM/DD-HH:mm:ss as the
+ /// format. If you omit the HH:mm:ss portion, it is assumed to be 00:00:00
+ /// (midnight).
+ /// </para>
+ ///
+ /// <para>
+ /// The value for a size criterion is expressed in integer quantities of bytes,
+ /// kilobytes (use k or kb after the number), megabytes (m or mb), or gigabytes
+ /// (g or gb).
+ /// </para>
+ ///
+ /// <para>
+ /// The value for a name is a pattern to match against the filename, potentially
+ /// including wildcards. The pattern follows CMD.exe glob rules: * implies one
+ /// or more of any character, while ? implies one character. If the name
+ /// pattern contains any slashes, it is matched to the entire filename,
+ /// including the path; otherwise, it is matched against only the filename
+ /// without the path. This means a pattern of "*\*.*" matches all files one
+ /// directory level deep, while a pattern of "*.*" matches all files in all
+ /// directories.
+ /// </para>
+ ///
+ /// <para>
+ /// To specify a name pattern that includes spaces, use single quotes around the
+ /// pattern. A pattern of "'* *.*'" will match all files that have spaces in
+ /// the filename. The full criteria string for that would be "name = '* *.*'" .
+ /// </para>
+ ///
+ /// <para>
+ /// The value for a type criterion is either F (implying a file) or D (implying
+ /// a directory).
+ /// </para>
+ ///
+ /// <para>
+ /// Some examples:
+ /// </para>
+ ///
+ /// <list type="table">
+ /// <listheader>
+ /// <term>criteria</term>
+ /// <description>Files retrieved</description>
+ /// </listheader>
+ ///
+ /// <item>
+ /// <term>name != *.xls </term>
+ /// <description>any file with an extension that is not .xls
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>name = *.mp3 </term>
+ /// <description>any file with a .mp3 extension.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>*.mp3</term>
+ /// <description>(same as above) any file with a .mp3 extension.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>attributes = A </term>
+ /// <description>all files whose attributes include the Archive bit.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>attributes != H </term>
+ /// <description>all files whose attributes do not include the Hidden bit.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>mtime > 2009-01-01</term>
+ /// <description>all files with a last modified time after January 1st, 2009.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>size > 2gb</term>
+ /// <description>all files whose uncompressed size is greater than 2gb.
+ /// </description>
+ /// </item>
+ ///
+ /// <item>
+ /// <term>type = D</term>
+ /// <description>all directories in the filesystem. </description>
+ /// </item>
+ ///
+ /// </list>
+ ///
+ /// <para>
+ /// You can combine criteria with the conjunctions AND or OR. Using a string
+ /// like "name = *.txt AND size >= 100k" for the selectionCriteria retrieves
+ /// entries whose names end in .txt, and whose uncompressed size is greater than
+ /// or equal to 100 kilobytes.
+ /// </para>
+ ///
+ /// <para>
+ /// For more complex combinations of criteria, you can use parenthesis to group
+ /// clauses in the boolean logic. Without parenthesis, the precedence of the
+ /// criterion atoms is determined by order of appearance. Unlike the C#
+ /// language, the AND conjunction does not take precendence over the logical OR.
+ /// This is important only in strings that contain 3 or more criterion atoms.
+ /// In other words, "name = *.txt and size > 1000 or attributes = H" implies
+ /// "((name = *.txt AND size > 1000) OR attributes = H)" while "attributes =
+ /// H OR name = *.txt and size > 1000" evaluates to "((attributes = H OR name
+ /// = *.txt) AND size > 1000)". When in doubt, use parenthesis.
+ /// </para>
+ ///
+ /// <para>
+ /// Using time properties requires some extra care. If you want to retrieve all
+ /// entries that were last updated on 2009 February 14, specify a time range
+ /// like so:"mtime >= 2009-02-14 AND mtime < 2009-02-15". Read this to
+ /// say: all files updated after 12:00am on February 14th, until 12:00am on
+ /// February 15th. You can use the same bracketing approach to specify any time
+ /// period - a year, a month, a week, and so on.
+ /// </para>
+ ///
+ /// <para>
+ /// The syntax allows one special case: if you provide a string with no spaces, it is
+ /// treated as a pattern to match for the filename. Therefore a string like "*.xls"
+ /// will be equivalent to specifying "name = *.xls".
+ /// </para>
+ ///
+ /// <para>
+ /// There is no logic in this method that insures that the file inclusion
+ /// criteria are internally consistent. For example, it's possible to specify
+ /// criteria that says the file must have a size of less than 100 bytes, as well
+ /// as a size that is greater than 1000 bytes. Obviously no file will ever
+ /// satisfy such criteria, but this method does not detect such logical
+ /// inconsistencies. The caller is responsible for insuring the criteria are
+ /// sensible.
+ /// </para>
+ ///
+ /// <para>
+ /// Using this method, the file selection does not recurse into
+ /// subdirectories, and the full path of the selected files is included in the
+ /// entries added into the zip archive. If you don't like these behaviors,
+ /// see the other overloads of this method.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example zips up all *.csv files in the current working directory.
+ /// <code>
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// // To just match on filename wildcards,
+ /// // use the shorthand form of the selectionCriteria string.
+ /// zip.AddSelectedFiles("*.csv");
+ /// zip.Save(PathToZipArchive);
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip As ZipFile = New ZipFile()
+ /// zip.AddSelectedFiles("*.csv")
+ /// zip.Save(PathToZipArchive)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="selectionCriteria">The criteria for file selection</param>
+ public void AddSelectedFiles(String selectionCriteria)
+ {
+ this.AddSelectedFiles(selectionCriteria, ".", null, false);
+ }
+
+ /// <summary>
+ /// Adds to the ZipFile a set of files from the disk that conform to the
+ /// specified criteria, optionally recursing into subdirectories.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method selects files from the the current working directory matching
+ /// the specified criteria, and adds them to the ZipFile. If
+ /// <c>recurseDirectories</c> is true, files are also selected from
+ /// subdirectories, and the directory structure in the filesystem is
+ /// reproduced in the zip archive, rooted at the current working directory.
+ /// </para>
+ ///
+ /// <para>
+ /// Using this method, the full path of the selected files is included in the
+ /// entries added into the zip archive. If you don't want this behavior, use
+ /// one of the overloads of this method that allows the specification of a
+ /// <c>directoryInArchive</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// For details on the syntax for the selectionCriteria parameter, see <see
+ /// cref="AddSelectedFiles(String)"/>.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example zips up all *.xml files in the current working directory, or any
+ /// subdirectory, that are larger than 1mb.
+ ///
+ /// <code>
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// // Use a compound expression in the selectionCriteria string.
+ /// zip.AddSelectedFiles("name = *.xml and size > 1024kb", true);
+ /// zip.Save(PathToZipArchive);
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip As ZipFile = New ZipFile()
+ /// ' Use a compound expression in the selectionCriteria string.
+ /// zip.AddSelectedFiles("name = *.xml and size > 1024kb", true)
+ /// zip.Save(PathToZipArchive)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="selectionCriteria">The criteria for file selection</param>
+ ///
+ /// <param name="recurseDirectories">
+ /// If true, the file selection will recurse into subdirectories.
+ /// </param>
+ public void AddSelectedFiles(String selectionCriteria, bool recurseDirectories)
+ {
+ this.AddSelectedFiles(selectionCriteria, ".", null, recurseDirectories);
+ }
+
+ /// <summary>
+ /// Adds to the ZipFile a set of files from a specified directory in the
+ /// filesystem, that conform to the specified criteria.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method selects files that conform to the specified criteria, from the
+ /// the specified directory on disk, and adds them to the ZipFile. The search
+ /// does not recurse into subdirectores.
+ /// </para>
+ ///
+ /// <para>
+ /// Using this method, the full filesystem path of the files on disk is
+ /// reproduced on the entries added to the zip file. If you don't want this
+ /// behavior, use one of the other overloads of this method.
+ /// </para>
+ ///
+ /// <para>
+ /// For details on the syntax for the selectionCriteria parameter, see <see
+ /// cref="AddSelectedFiles(String)"/>.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example zips up all *.xml files larger than 1mb in the directory
+ /// given by "d:\rawdata".
+ ///
+ /// <code>
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// // Use a compound expression in the selectionCriteria string.
+ /// zip.AddSelectedFiles("name = *.xml and size > 1024kb", "d:\\rawdata");
+ /// zip.Save(PathToZipArchive);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As ZipFile = New ZipFile()
+ /// ' Use a compound expression in the selectionCriteria string.
+ /// zip.AddSelectedFiles("name = *.xml and size > 1024kb", "d:\rawdata)
+ /// zip.Save(PathToZipArchive)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="selectionCriteria">The criteria for file selection</param>
+ ///
+ /// <param name="directoryOnDisk">
+ /// The name of the directory on the disk from which to select files.
+ /// </param>
+ public void AddSelectedFiles(String selectionCriteria, String directoryOnDisk)
+ {
+ this.AddSelectedFiles(selectionCriteria, directoryOnDisk, null, false);
+ }
+
+
+ /// <summary>
+ /// Adds to the ZipFile a set of files from the specified directory on disk,
+ /// that conform to the specified criteria.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This method selects files from the the specified disk directory matching
+ /// the specified selection criteria, and adds them to the ZipFile. If
+ /// <c>recurseDirectories</c> is true, files are also selected from
+ /// subdirectories.
+ /// </para>
+ ///
+ /// <para>
+ /// The full directory structure in the filesystem is reproduced on the
+ /// entries added to the zip archive. If you don't want this behavior, use
+ /// one of the overloads of this method that allows the specification of a
+ /// <c>directoryInArchive</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// For details on the syntax for the selectionCriteria parameter, see <see
+ /// cref="AddSelectedFiles(String)"/>.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example zips up all *.csv files in the "files" directory, or any
+ /// subdirectory, that have been saved since 2009 February 14th.
+ ///
+ /// <code>
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// // Use a compound expression in the selectionCriteria string.
+ /// zip.AddSelectedFiles("name = *.csv and mtime > 2009-02-14", "files", true);
+ /// zip.Save(PathToZipArchive);
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip As ZipFile = New ZipFile()
+ /// ' Use a compound expression in the selectionCriteria string.
+ /// zip.AddSelectedFiles("name = *.csv and mtime > 2009-02-14", "files", true)
+ /// zip.Save(PathToZipArchive)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <example>
+ /// This example zips up all files in the current working
+ /// directory, and all its child directories, except those in
+ /// the <c>excludethis</c> subdirectory.
+ /// <code lang="VB">
+ /// Using Zip As ZipFile = New ZipFile(zipfile)
+ /// Zip.AddSelectedFfiles("name != 'excludethis\*.*'", datapath, True)
+ /// Zip.Save()
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="selectionCriteria">The criteria for file selection</param>
+ ///
+ /// <param name="directoryOnDisk">
+ /// The filesystem path from which to select files.
+ /// </param>
+ ///
+ /// <param name="recurseDirectories">
+ /// If true, the file selection will recurse into subdirectories.
+ /// </param>
+ public void AddSelectedFiles(String selectionCriteria, String directoryOnDisk, bool recurseDirectories)
+ {
+ this.AddSelectedFiles(selectionCriteria, directoryOnDisk, null, recurseDirectories);
+ }
+
+
+ /// <summary>
+ /// Adds to the ZipFile a selection of files from the specified directory on
+ /// disk, that conform to the specified criteria, and using a specified root
+ /// path for entries added to the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method selects files from the specified disk directory matching the
+ /// specified selection criteria, and adds those files to the ZipFile, using
+ /// the specified directory path in the archive. The search does not recurse
+ /// into subdirectories. For details on the syntax for the selectionCriteria
+ /// parameter, see <see cref="AddSelectedFiles(String)" />.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example zips up all *.psd files in the "photos" directory that have
+ /// been saved since 2009 February 14th, and puts them all in a zip file,
+ /// using the directory name of "content" in the zip archive itself. When the
+ /// zip archive is unzipped, the folder containing the .psd files will be
+ /// named "content".
+ ///
+ /// <code>
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// // Use a compound expression in the selectionCriteria string.
+ /// zip.AddSelectedFiles("name = *.psd and mtime > 2009-02-14", "photos", "content");
+ /// zip.Save(PathToZipArchive);
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip As ZipFile = New ZipFile
+ /// zip.AddSelectedFiles("name = *.psd and mtime > 2009-02-14", "photos", "content")
+ /// zip.Save(PathToZipArchive)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="selectionCriteria">
+ /// The criteria for selection of files to add to the <c>ZipFile</c>.
+ /// </param>
+ ///
+ /// <param name="directoryOnDisk">
+ /// The path to the directory in the filesystem from which to select files.
+ /// </param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// Specifies a directory path to use to in place of the
+ /// <c>directoryOnDisk</c>. This path may, or may not, correspond to a real
+ /// directory in the current filesystem. If the files within the zip are
+ /// later extracted, this is the path used for the extracted file. Passing
+ /// null (nothing in VB) will use the path on the file name, if any; in other
+ /// words it would use <c>directoryOnDisk</c>, plus any subdirectory. Passing
+ /// the empty string ("") will insert the item at the root path within the
+ /// archive.
+ /// </param>
+ public void AddSelectedFiles(String selectionCriteria,
+ String directoryOnDisk,
+ String directoryPathInArchive)
+ {
+ this.AddSelectedFiles(selectionCriteria, directoryOnDisk, directoryPathInArchive, false);
+ }
+
+ /// <summary>
+ /// Adds to the ZipFile a selection of files from the specified directory on
+ /// disk, that conform to the specified criteria, optionally recursing through
+ /// subdirectories, and using a specified root path for entries added to the
+ /// zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This method selects files from the specified disk directory that match the
+ /// specified selection criteria, and adds those files to the ZipFile, using
+ /// the specified directory path in the archive. If <c>recurseDirectories</c>
+ /// is true, files are also selected from subdirectories, and the directory
+ /// structure in the filesystem is reproduced in the zip archive, rooted at
+ /// the directory specified by <c>directoryOnDisk</c>. For details on the
+ /// syntax for the selectionCriteria parameter, see <see
+ /// cref="AddSelectedFiles(String)" />.
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example zips up all files that are NOT *.pst files, in the current
+ /// working directory and any subdirectories.
+ ///
+ /// <code>
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// zip.AddSelectedFiles("name != *.pst", SourceDirectory, "backup", true);
+ /// zip.Save(PathToZipArchive);
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip As ZipFile = New ZipFile
+ /// zip.AddSelectedFiles("name != *.pst", SourceDirectory, "backup", true)
+ /// zip.Save(PathToZipArchive)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="selectionCriteria">
+ /// The criteria for selection of files to add to the <c>ZipFile</c>.
+ /// </param>
+ ///
+ /// <param name="directoryOnDisk">
+ /// The path to the directory in the filesystem from which to select files.
+ /// </param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// Specifies a directory path to use to in place of the
+ /// <c>directoryOnDisk</c>. This path may, or may not, correspond to a real
+ /// directory in the current filesystem. If the files within the zip are
+ /// later extracted, this is the path used for the extracted file. Passing
+ /// null (nothing in VB) will use the path on the file name, if any; in other
+ /// words it would use <c>directoryOnDisk</c>, plus any subdirectory. Passing
+ /// the empty string ("") will insert the item at the root path within the
+ /// archive.
+ /// </param>
+ ///
+ /// <param name="recurseDirectories">
+ /// If true, the method also scans subdirectories for files matching the
+ /// criteria.
+ /// </param>
+ public void AddSelectedFiles(String selectionCriteria,
+ String directoryOnDisk,
+ String directoryPathInArchive,
+ bool recurseDirectories)
+ {
+ _AddOrUpdateSelectedFiles(selectionCriteria,
+ directoryOnDisk,
+ directoryPathInArchive,
+ recurseDirectories,
+ false);
+ }
+
+ /// <summary>
+ /// Updates the ZipFile with a selection of files from the disk that conform
+ /// to the specified criteria.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This method selects files from the specified disk directory that match the
+ /// specified selection criteria, and Updates the <c>ZipFile</c> with those
+ /// files, using the specified directory path in the archive. If
+ /// <c>recurseDirectories</c> is true, files are also selected from
+ /// subdirectories, and the directory structure in the filesystem is
+ /// reproduced in the zip archive, rooted at the directory specified by
+ /// <c>directoryOnDisk</c>. For details on the syntax for the
+ /// selectionCriteria parameter, see <see cref="AddSelectedFiles(String)" />.
+ /// </remarks>
+ ///
+ /// <param name="selectionCriteria">
+ /// The criteria for selection of files to add to the <c>ZipFile</c>.
+ /// </param>
+ ///
+ /// <param name="directoryOnDisk">
+ /// The path to the directory in the filesystem from which to select files.
+ /// </param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// Specifies a directory path to use to in place of the
+ /// <c>directoryOnDisk</c>. This path may, or may not, correspond to a
+ /// real directory in the current filesystem. If the files within the zip
+ /// are later extracted, this is the path used for the extracted file.
+ /// Passing null (nothing in VB) will use the path on the file name, if
+ /// any; in other words it would use <c>directoryOnDisk</c>, plus any
+ /// subdirectory. Passing the empty string ("") will insert the item at
+ /// the root path within the archive.
+ /// </param>
+ ///
+ /// <param name="recurseDirectories">
+ /// If true, the method also scans subdirectories for files matching the criteria.
+ /// </param>
+ ///
+ /// <seealso cref="AddSelectedFiles(String, String, String, bool)" />
+ public void UpdateSelectedFiles(String selectionCriteria,
+ String directoryOnDisk,
+ String directoryPathInArchive,
+ bool recurseDirectories)
+ {
+ _AddOrUpdateSelectedFiles(selectionCriteria,
+ directoryOnDisk,
+ directoryPathInArchive,
+ recurseDirectories,
+ true);
+ }
+
+
+ private string EnsureendInSlash(string s)
+ {
+ if (s.EndsWith("\\")) return s;
+ return s + "\\";
+ }
+
+ private void _AddOrUpdateSelectedFiles(String selectionCriteria,
+ String directoryOnDisk,
+ String directoryPathInArchive,
+ bool recurseDirectories,
+ bool wantUpdate)
+ {
+ if (directoryOnDisk == null && (Directory.Exists(selectionCriteria)))
+ {
+ directoryOnDisk = selectionCriteria;
+ selectionCriteria = "*.*";
+ }
+ else if (String.IsNullOrEmpty(directoryOnDisk))
+ {
+ directoryOnDisk = ".";
+ }
+
+ // workitem 9176
+ while (directoryOnDisk.EndsWith("\\")) directoryOnDisk = directoryOnDisk.Substring(0, directoryOnDisk.Length - 1);
+ if (Verbose) StatusMessageTextWriter.WriteLine("adding selection '{0}' from dir '{1}'...",
+ selectionCriteria, directoryOnDisk);
+ Ionic.FileSelector ff = new Ionic.FileSelector(selectionCriteria,
+ AddDirectoryWillTraverseReparsePoints);
+ var itemsToAdd = ff.SelectFiles(directoryOnDisk, recurseDirectories);
+
+ if (Verbose) StatusMessageTextWriter.WriteLine("found {0} files...", itemsToAdd.Count);
+
+ OnAddStarted();
+
+ AddOrUpdateAction action = (wantUpdate) ? AddOrUpdateAction.AddOrUpdate : AddOrUpdateAction.AddOnly;
+ foreach (var item in itemsToAdd)
+ {
+ // workitem 10153
+ string dirInArchive = (directoryPathInArchive == null)
+ ? null
+ // workitem 12260
+ : ReplaceLeadingDirectory(Path.GetDirectoryName(item),
+ directoryOnDisk,
+ directoryPathInArchive);
+
+ if (File.Exists(item))
+ {
+ if (wantUpdate)
+ this.UpdateFile(item, dirInArchive);
+ else
+ this.AddFile(item, dirInArchive);
+ }
+ else
+ {
+ // this adds "just" the directory, without recursing to the contained files
+ AddOrUpdateDirectoryImpl(item, dirInArchive, action, false, 0);
+ }
+ }
+
+ OnAddCompleted();
+ }
+
+
+ // workitem 12260
+ private static string ReplaceLeadingDirectory(string original,
+ string pattern,
+ string replacement)
+ {
+ string upperString = original.ToUpper();
+ string upperPattern = pattern.ToUpper();
+ int p1 = upperString.IndexOf(upperPattern);
+ if (p1 != 0) return original;
+ return replacement + original.Substring(upperPattern.Length);
+ }
+
+#if NOT
+ private static string ReplaceEx(string original,
+ string pattern,
+ string replacement)
+ {
+ int count, position0, position1;
+ count = position0 = position1 = 0;
+ string upperString = original.ToUpper();
+ string upperPattern = pattern.ToUpper();
+ int inc = (original.Length/pattern.Length) *
+ (replacement.Length-pattern.Length);
+ char [] chars = new char[original.Length + Math.Max(0, inc)];
+ while( (position1 = upperString.IndexOf(upperPattern,
+ position0)) != -1 )
+ {
+ for ( int i=position0 ; i < position1 ; ++i )
+ chars[count++] = original[i];
+ for ( int i=0 ; i < replacement.Length ; ++i )
+ chars[count++] = replacement[i];
+ position0 = position1+pattern.Length;
+ }
+ if ( position0 == 0 ) return original;
+ for ( int i=position0 ; i < original.Length ; ++i )
+ chars[count++] = original[i];
+ return new string(chars, 0, count);
+ }
+#endif
+
+ /// <summary>
+ /// Retrieve entries from the zipfile by specified criteria.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method allows callers to retrieve the collection of entries from the zipfile
+ /// that fit the specified criteria. The criteria are described in a string format, and
+ /// can include patterns for the filename; constraints on the size of the entry;
+ /// constraints on the last modified, created, or last accessed time for the file
+ /// described by the entry; or the attributes of the entry.
+ /// </para>
+ ///
+ /// <para>
+ /// For details on the syntax for the selectionCriteria parameter, see <see
+ /// cref="AddSelectedFiles(String)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// This method is intended for use with a ZipFile that has been read from storage.
+ /// When creating a new ZipFile, this method will work only after the ZipArchive has
+ /// been Saved to the disk (the ZipFile class subsequently and implicitly reads the Zip
+ /// archive from storage.) Calling SelectEntries on a ZipFile that has not yet been
+ /// saved will deliver undefined results.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <exception cref="System.Exception">
+ /// Thrown if selectionCriteria has an invalid syntax.
+ /// </exception>
+ ///
+ /// <example>
+ /// This example selects all the PhotoShop files from within an archive, and extracts them
+ /// to the current working directory.
+ /// <code>
+ /// using (ZipFile zip1 = ZipFile.Read(ZipFileName))
+ /// {
+ /// var PhotoShopFiles = zip1.SelectEntries("*.psd");
+ /// foreach (ZipEntry psd in PhotoShopFiles)
+ /// {
+ /// psd.Extract();
+ /// }
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip1 As ZipFile = ZipFile.Read(ZipFileName)
+ /// Dim PhotoShopFiles as ICollection(Of ZipEntry)
+ /// PhotoShopFiles = zip1.SelectEntries("*.psd")
+ /// Dim psd As ZipEntry
+ /// For Each psd In PhotoShopFiles
+ /// psd.Extract
+ /// Next
+ /// End Using
+ /// </code>
+ /// </example>
+ /// <param name="selectionCriteria">the string that specifies which entries to select</param>
+ /// <returns>a collection of ZipEntry objects that conform to the inclusion spec</returns>
+ public ICollection<ZipEntry> SelectEntries(String selectionCriteria)
+ {
+ Ionic.FileSelector ff = new Ionic.FileSelector(selectionCriteria,
+ AddDirectoryWillTraverseReparsePoints);
+ return ff.SelectEntries(this);
+ }
+
+
+ /// <summary>
+ /// Retrieve entries from the zipfile by specified criteria.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method allows callers to retrieve the collection of entries from the zipfile
+ /// that fit the specified criteria. The criteria are described in a string format, and
+ /// can include patterns for the filename; constraints on the size of the entry;
+ /// constraints on the last modified, created, or last accessed time for the file
+ /// described by the entry; or the attributes of the entry.
+ /// </para>
+ ///
+ /// <para>
+ /// For details on the syntax for the selectionCriteria parameter, see <see
+ /// cref="AddSelectedFiles(String)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// This method is intended for use with a ZipFile that has been read from storage.
+ /// When creating a new ZipFile, this method will work only after the ZipArchive has
+ /// been Saved to the disk (the ZipFile class subsequently and implicitly reads the Zip
+ /// archive from storage.) Calling SelectEntries on a ZipFile that has not yet been
+ /// saved will deliver undefined results.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <exception cref="System.Exception">
+ /// Thrown if selectionCriteria has an invalid syntax.
+ /// </exception>
+ ///
+ /// <example>
+ /// <code>
+ /// using (ZipFile zip1 = ZipFile.Read(ZipFileName))
+ /// {
+ /// var UpdatedPhotoShopFiles = zip1.SelectEntries("*.psd", "UpdatedFiles");
+ /// foreach (ZipEntry e in UpdatedPhotoShopFiles)
+ /// {
+ /// // prompt for extract here
+ /// if (WantExtract(e.FileName))
+ /// e.Extract();
+ /// }
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip1 As ZipFile = ZipFile.Read(ZipFileName)
+ /// Dim UpdatedPhotoShopFiles As ICollection(Of ZipEntry) = zip1.SelectEntries("*.psd", "UpdatedFiles")
+ /// Dim e As ZipEntry
+ /// For Each e In UpdatedPhotoShopFiles
+ /// ' prompt for extract here
+ /// If Me.WantExtract(e.FileName) Then
+ /// e.Extract
+ /// End If
+ /// Next
+ /// End Using
+ /// </code>
+ /// </example>
+ /// <param name="selectionCriteria">the string that specifies which entries to select</param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// the directory in the archive from which to select entries. If null, then
+ /// all directories in the archive are used.
+ /// </param>
+ ///
+ /// <returns>a collection of ZipEntry objects that conform to the inclusion spec</returns>
+ public ICollection<ZipEntry> SelectEntries(String selectionCriteria, string directoryPathInArchive)
+ {
+ Ionic.FileSelector ff = new Ionic.FileSelector(selectionCriteria,
+ AddDirectoryWillTraverseReparsePoints);
+ return ff.SelectEntries(this, directoryPathInArchive);
+ }
+
+
+
+ /// <summary>
+ /// Remove entries from the zipfile by specified criteria.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method allows callers to remove the collection of entries from the zipfile
+ /// that fit the specified criteria. The criteria are described in a string format, and
+ /// can include patterns for the filename; constraints on the size of the entry;
+ /// constraints on the last modified, created, or last accessed time for the file
+ /// described by the entry; or the attributes of the entry.
+ /// </para>
+ ///
+ /// <para>
+ /// For details on the syntax for the selectionCriteria parameter, see <see
+ /// cref="AddSelectedFiles(String)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// This method is intended for use with a ZipFile that has been read from storage.
+ /// When creating a new ZipFile, this method will work only after the ZipArchive has
+ /// been Saved to the disk (the ZipFile class subsequently and implicitly reads the Zip
+ /// archive from storage.) Calling SelectEntries on a ZipFile that has not yet been
+ /// saved will deliver undefined results.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <exception cref="System.Exception">
+ /// Thrown if selectionCriteria has an invalid syntax.
+ /// </exception>
+ ///
+ /// <example>
+ /// This example removes all entries in a zip file that were modified prior to January 1st, 2008.
+ /// <code>
+ /// using (ZipFile zip1 = ZipFile.Read(ZipFileName))
+ /// {
+ /// // remove all entries from prior to Jan 1, 2008
+ /// zip1.RemoveEntries("mtime < 2008-01-01");
+ /// // don't forget to save the archive!
+ /// zip1.Save();
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip As ZipFile = ZipFile.Read(ZipFileName)
+ /// ' remove all entries from prior to Jan 1, 2008
+ /// zip1.RemoveEntries("mtime < 2008-01-01")
+ /// ' do not forget to save the archive!
+ /// zip1.Save
+ /// End Using
+ /// </code>
+ /// </example>
+ /// <param name="selectionCriteria">the string that specifies which entries to select</param>
+ /// <returns>the number of entries removed</returns>
+ public int RemoveSelectedEntries(String selectionCriteria)
+ {
+ var selection = this.SelectEntries(selectionCriteria);
+ this.RemoveEntries(selection);
+ return selection.Count;
+ }
+
+
+ /// <summary>
+ /// Remove entries from the zipfile by specified criteria, and within the specified
+ /// path in the archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method allows callers to remove the collection of entries from the zipfile
+ /// that fit the specified criteria. The criteria are described in a string format, and
+ /// can include patterns for the filename; constraints on the size of the entry;
+ /// constraints on the last modified, created, or last accessed time for the file
+ /// described by the entry; or the attributes of the entry.
+ /// </para>
+ ///
+ /// <para>
+ /// For details on the syntax for the selectionCriteria parameter, see <see
+ /// cref="AddSelectedFiles(String)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// This method is intended for use with a ZipFile that has been read from storage.
+ /// When creating a new ZipFile, this method will work only after the ZipArchive has
+ /// been Saved to the disk (the ZipFile class subsequently and implicitly reads the Zip
+ /// archive from storage.) Calling SelectEntries on a ZipFile that has not yet been
+ /// saved will deliver undefined results.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <exception cref="System.Exception">
+ /// Thrown if selectionCriteria has an invalid syntax.
+ /// </exception>
+ ///
+ /// <example>
+ /// <code>
+ /// using (ZipFile zip1 = ZipFile.Read(ZipFileName))
+ /// {
+ /// // remove all entries from prior to Jan 1, 2008
+ /// zip1.RemoveEntries("mtime < 2008-01-01", "documents");
+ /// // a call to ZipFile.Save will make the modifications permanent
+ /// zip1.Save();
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip As ZipFile = ZipFile.Read(ZipFileName)
+ /// ' remove all entries from prior to Jan 1, 2008
+ /// zip1.RemoveEntries("mtime < 2008-01-01", "documents")
+ /// ' a call to ZipFile.Save will make the modifications permanent
+ /// zip1.Save
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="selectionCriteria">the string that specifies which entries to select</param>
+ /// <param name="directoryPathInArchive">
+ /// the directory in the archive from which to select entries. If null, then
+ /// all directories in the archive are used.
+ /// </param>
+ /// <returns>the number of entries removed</returns>
+ public int RemoveSelectedEntries(String selectionCriteria, string directoryPathInArchive)
+ {
+ var selection = this.SelectEntries(selectionCriteria, directoryPathInArchive);
+ this.RemoveEntries(selection);
+ return selection.Count;
+ }
+
+
+ /// <summary>
+ /// Selects and Extracts a set of Entries from the ZipFile.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The entries are extracted into the current working directory.
+ /// </para>
+ ///
+ /// <para>
+ /// If any of the files to be extracted already exist, then the action taken is as
+ /// specified in the <see cref="ZipEntry.ExtractExistingFile"/> property on the
+ /// corresponding ZipEntry instance. By default, the action taken in this case is to
+ /// throw an exception.
+ /// </para>
+ ///
+ /// <para>
+ /// For information on the syntax of the selectionCriteria string,
+ /// see <see cref="AddSelectedFiles(String)" />.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example shows how extract all XML files modified after 15 January 2009.
+ /// <code>
+ /// using (ZipFile zip = ZipFile.Read(zipArchiveName))
+ /// {
+ /// zip.ExtractSelectedEntries("name = *.xml and mtime > 2009-01-15");
+ /// }
+ /// </code>
+ /// </example>
+ /// <param name="selectionCriteria">the selection criteria for entries to extract.</param>
+ ///
+ /// <seealso cref="ExtractSelectedEntries(String,ExtractExistingFileAction)"/>
+ public void ExtractSelectedEntries(String selectionCriteria)
+ {
+ foreach (ZipEntry e in SelectEntries(selectionCriteria))
+ {
+ e.Password = _Password; // possibly null
+ e.Extract();
+ }
+ }
+
+
+ /// <summary>
+ /// Selects and Extracts a set of Entries from the ZipFile.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The entries are extracted into the current working directory. When extraction would would
+ /// overwrite an existing filesystem file, the action taken is as specified in the
+ /// <paramref name="extractExistingFile"/> parameter.
+ /// </para>
+ ///
+ /// <para>
+ /// For information on the syntax of the string describing the entry selection criteria,
+ /// see <see cref="AddSelectedFiles(String)" />.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example shows how extract all XML files modified after 15 January 2009,
+ /// overwriting any existing files.
+ /// <code>
+ /// using (ZipFile zip = ZipFile.Read(zipArchiveName))
+ /// {
+ /// zip.ExtractSelectedEntries("name = *.xml and mtime > 2009-01-15",
+ /// ExtractExistingFileAction.OverwriteSilently);
+ /// }
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="selectionCriteria">the selection criteria for entries to extract.</param>
+ ///
+ /// <param name="extractExistingFile">
+ /// The action to take if extraction would overwrite an existing file.
+ /// </param>
+ public void ExtractSelectedEntries(String selectionCriteria, ExtractExistingFileAction extractExistingFile)
+ {
+ foreach (ZipEntry e in SelectEntries(selectionCriteria))
+ {
+ e.Password = _Password; // possibly null
+ e.Extract(extractExistingFile);
+ }
+ }
+
+
+ /// <summary>
+ /// Selects and Extracts a set of Entries from the ZipFile.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The entries are selected from the specified directory within the archive, and then
+ /// extracted into the current working directory.
+ /// </para>
+ ///
+ /// <para>
+ /// If any of the files to be extracted already exist, then the action taken is as
+ /// specified in the <see cref="ZipEntry.ExtractExistingFile"/> property on the
+ /// corresponding ZipEntry instance. By default, the action taken in this case is to
+ /// throw an exception.
+ /// </para>
+ ///
+ /// <para>
+ /// For information on the syntax of the string describing the entry selection criteria,
+ /// see <see cref="AddSelectedFiles(String)" />.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example shows how extract all XML files modified after 15 January 2009,
+ /// and writes them to the "unpack" directory.
+ /// <code>
+ /// using (ZipFile zip = ZipFile.Read(zipArchiveName))
+ /// {
+ /// zip.ExtractSelectedEntries("name = *.xml and mtime > 2009-01-15","unpack");
+ /// }
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="selectionCriteria">the selection criteria for entries to extract.</param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// the directory in the archive from which to select entries. If null, then
+ /// all directories in the archive are used.
+ /// </param>
+ ///
+ /// <seealso cref="ExtractSelectedEntries(String,String,String,ExtractExistingFileAction)"/>
+ public void ExtractSelectedEntries(String selectionCriteria, String directoryPathInArchive)
+ {
+ foreach (ZipEntry e in SelectEntries(selectionCriteria, directoryPathInArchive))
+ {
+ e.Password = _Password; // possibly null
+ e.Extract();
+ }
+ }
+
+
+ /// <summary>
+ /// Selects and Extracts a set of Entries from the ZipFile.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The entries are extracted into the specified directory. If any of the files to be
+ /// extracted already exist, an exception will be thrown.
+ /// </para>
+ /// <para>
+ /// For information on the syntax of the string describing the entry selection criteria,
+ /// see <see cref="AddSelectedFiles(String)" />.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="selectionCriteria">the selection criteria for entries to extract.</param>
+ ///
+ /// <param name="directoryInArchive">
+ /// the directory in the archive from which to select entries. If null, then
+ /// all directories in the archive are used.
+ /// </param>
+ ///
+ /// <param name="extractDirectory">
+ /// the directory on the disk into which to extract. It will be created
+ /// if it does not exist.
+ /// </param>
+ public void ExtractSelectedEntries(String selectionCriteria, string directoryInArchive, string extractDirectory)
+ {
+ foreach (ZipEntry e in SelectEntries(selectionCriteria, directoryInArchive))
+ {
+ e.Password = _Password; // possibly null
+ e.Extract(extractDirectory);
+ }
+ }
+
+
+ /// <summary>
+ /// Selects and Extracts a set of Entries from the ZipFile.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The entries are extracted into the specified directory. When extraction would would
+ /// overwrite an existing filesystem file, the action taken is as specified in the
+ /// <paramref name="extractExistingFile"/> parameter.
+ /// </para>
+ ///
+ /// <para>
+ /// For information on the syntax of the string describing the entry selection criteria,
+ /// see <see cref="AddSelectedFiles(String)" />.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example shows how extract all files with an XML extension or with a size larger than 100,000 bytes,
+ /// and puts them in the unpack directory. For any files that already exist in
+ /// that destination directory, they will not be overwritten.
+ /// <code>
+ /// using (ZipFile zip = ZipFile.Read(zipArchiveName))
+ /// {
+ /// zip.ExtractSelectedEntries("name = *.xml or size > 100000",
+ /// null,
+ /// "unpack",
+ /// ExtractExistingFileAction.DontOverwrite);
+ /// }
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="selectionCriteria">the selection criteria for entries to extract.</param>
+ ///
+ /// <param name="extractDirectory">
+ /// The directory on the disk into which to extract. It will be created if it does not exist.
+ /// </param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// The directory in the archive from which to select entries. If null, then
+ /// all directories in the archive are used.
+ /// </param>
+ ///
+ /// <param name="extractExistingFile">
+ /// The action to take if extraction would overwrite an existing file.
+ /// </param>
+ ///
+ public void ExtractSelectedEntries(String selectionCriteria, string directoryPathInArchive, string extractDirectory, ExtractExistingFileAction extractExistingFile)
+ {
+ foreach (ZipEntry e in SelectEntries(selectionCriteria, directoryPathInArchive))
+ {
+ e.Password = _Password; // possibly null
+ e.Extract(extractDirectory, extractExistingFile);
+ }
+ }
+
+ }
+
+}
+
+
+
+namespace Ionic
+{
+ internal abstract partial class SelectionCriterion
+ {
+ internal abstract bool Evaluate(Ionic.Zip.ZipEntry entry);
+ }
+
+
+ internal partial class NameCriterion : SelectionCriterion
+ {
+ internal override bool Evaluate(Ionic.Zip.ZipEntry entry)
+ {
+ // swap forward slashes in the entry.FileName for backslashes
+ string transformedFileName = entry.FileName.Replace("/", "\\");
+
+ return _Evaluate(transformedFileName);
+ }
+ }
+
+
+ internal partial class SizeCriterion : SelectionCriterion
+ {
+ internal override bool Evaluate(Ionic.Zip.ZipEntry entry)
+ {
+ return _Evaluate(entry.UncompressedSize);
+ }
+ }
+
+ internal partial class TimeCriterion : SelectionCriterion
+ {
+ internal override bool Evaluate(Ionic.Zip.ZipEntry entry)
+ {
+ DateTime x;
+ switch (Which)
+ {
+ case WhichTime.atime:
+ x = entry.AccessedTime;
+ break;
+ case WhichTime.mtime:
+ x = entry.ModifiedTime;
+ break;
+ case WhichTime.ctime:
+ x = entry.CreationTime;
+ break;
+ default: throw new ArgumentException("??time");
+ }
+ return _Evaluate(x);
+ }
+ }
+
+
+ internal partial class TypeCriterion : SelectionCriterion
+ {
+ internal override bool Evaluate(Ionic.Zip.ZipEntry entry)
+ {
+ bool result = (ObjectType == 'D')
+ ? entry.IsDirectory
+ : !entry.IsDirectory;
+
+ if (Operator != ComparisonOperator.EqualTo)
+ result = !result;
+ return result;
+ }
+ }
+
+#if !SILVERLIGHT
+ internal partial class AttributesCriterion : SelectionCriterion
+ {
+ internal override bool Evaluate(Ionic.Zip.ZipEntry entry)
+ {
+ FileAttributes fileAttrs = entry.Attributes;
+ return _Evaluate(fileAttrs);
+ }
+ }
+#endif
+
+ internal partial class CompoundCriterion : SelectionCriterion
+ {
+ internal override bool Evaluate(Ionic.Zip.ZipEntry entry)
+ {
+ bool result = Left.Evaluate(entry);
+ switch (Conjunction)
+ {
+ case LogicalConjunction.AND:
+ if (result)
+ result = Right.Evaluate(entry);
+ break;
+ case LogicalConjunction.OR:
+ if (!result)
+ result = Right.Evaluate(entry);
+ break;
+ case LogicalConjunction.XOR:
+ result ^= Right.Evaluate(entry);
+ break;
+ }
+ return result;
+ }
+ }
+
+
+
+ internal partial class FileSelector
+ {
+ private bool Evaluate(Ionic.Zip.ZipEntry entry)
+ {
+ bool result = _Criterion.Evaluate(entry);
+ return result;
+ }
+
+ /// <summary>
+ /// Retrieve the ZipEntry items in the ZipFile that conform to the specified criteria.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// This method applies the criteria set in the FileSelector instance (as described in
+ /// the <see cref="FileSelector.SelectionCriteria"/>) to the specified ZipFile. Using this
+ /// method, for example, you can retrieve all entries from the given ZipFile that
+ /// have filenames ending in .txt.
+ /// </para>
+ ///
+ /// <para>
+ /// Normally, applications would not call this method directly. This method is used
+ /// by the ZipFile class.
+ /// </para>
+ ///
+ /// <para>
+ /// Using the appropriate SelectionCriteria, you can retrieve entries based on size,
+ /// time, and attributes. See <see cref="FileSelector.SelectionCriteria"/> for a
+ /// description of the syntax of the SelectionCriteria string.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="zip">The ZipFile from which to retrieve entries.</param>
+ ///
+ /// <returns>a collection of ZipEntry objects that conform to the criteria.</returns>
+ public ICollection<Ionic.Zip.ZipEntry> SelectEntries(Ionic.Zip.ZipFile zip)
+ {
+ if (zip == null)
+ throw new ArgumentNullException("zip");
+
+ var list = new List<Ionic.Zip.ZipEntry>();
+
+ foreach (Ionic.Zip.ZipEntry e in zip)
+ {
+ if (this.Evaluate(e))
+ list.Add(e);
+ }
+
+ return list;
+ }
+
+
+ /// <summary>
+ /// Retrieve the ZipEntry items in the ZipFile that conform to the specified criteria.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// This method applies the criteria set in the FileSelector instance (as described in
+ /// the <see cref="FileSelector.SelectionCriteria"/>) to the specified ZipFile. Using this
+ /// method, for example, you can retrieve all entries from the given ZipFile that
+ /// have filenames ending in .txt.
+ /// </para>
+ ///
+ /// <para>
+ /// Normally, applications would not call this method directly. This method is used
+ /// by the ZipFile class.
+ /// </para>
+ ///
+ /// <para>
+ /// This overload allows the selection of ZipEntry instances from the ZipFile to be restricted
+ /// to entries contained within a particular directory in the ZipFile.
+ /// </para>
+ ///
+ /// <para>
+ /// Using the appropriate SelectionCriteria, you can retrieve entries based on size,
+ /// time, and attributes. See <see cref="FileSelector.SelectionCriteria"/> for a
+ /// description of the syntax of the SelectionCriteria string.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="zip">The ZipFile from which to retrieve entries.</param>
+ ///
+ /// <param name="directoryPathInArchive">
+ /// the directory in the archive from which to select entries. If null, then
+ /// all directories in the archive are used.
+ /// </param>
+ ///
+ /// <returns>a collection of ZipEntry objects that conform to the criteria.</returns>
+ public ICollection<Ionic.Zip.ZipEntry> SelectEntries(Ionic.Zip.ZipFile zip, string directoryPathInArchive)
+ {
+ if (zip == null)
+ throw new ArgumentNullException("zip");
+
+ var list = new List<Ionic.Zip.ZipEntry>();
+ // workitem 8559
+ string slashSwapped = (directoryPathInArchive == null) ? null : directoryPathInArchive.Replace("/", "\\");
+ // workitem 9174
+ if (slashSwapped != null)
+ {
+ while (slashSwapped.EndsWith("\\"))
+ slashSwapped = slashSwapped.Substring(0, slashSwapped.Length - 1);
+ }
+ foreach (Ionic.Zip.ZipEntry e in zip)
+ {
+ if (directoryPathInArchive == null || (Path.GetDirectoryName(e.FileName) == directoryPathInArchive)
+ || (Path.GetDirectoryName(e.FileName) == slashSwapped)) // workitem 8559
+ if (this.Evaluate(e))
+ list.Add(e);
+ }
+
+ return list;
+ }
+
+ }
+}
--- /dev/null
+// ZipFile.cs
+//
+// Copyright (c) 2006-2010 Dino Chiesa
+// All rights reserved.
+//
+// This module is part of DotNetZip, a zipfile class library.
+// The class library reads and writes zip files, according to the format
+// described by PKware, at:
+// http://www.pkware.com/business_and_developers/developer/popups/appnote.txt
+//
+//
+// There are other Zip class libraries available.
+//
+// - it is possible to read and write zip files within .NET via the J# runtime.
+// But some people don't like to install the extra DLL, which is no longer
+// supported by MS. And also, the J# libraries don't support advanced zip
+// features, like ZIP64, spanned archives, or AES encryption.
+//
+// - There are third-party GPL and LGPL libraries available. Some people don't
+// like the license, and some of them don't support all the ZIP features, like AES.
+//
+// - Finally, there are commercial tools (From ComponentOne, XCeed, etc). But
+// some people don't want to incur the cost.
+//
+// This alternative implementation is **not** GPL licensed. It is free of cost, and
+// does not require J#. It does require .NET 2.0. It balances a good set of
+// features, with ease of use and speed of performance.
+//
+// This code is released under the Microsoft Public License .
+// See the License.txt for details.
+//
+//
+// NB: This implementation originally relied on the
+// System.IO.Compression.DeflateStream base class in the .NET Framework
+// v2.0 base class library, but now includes a managed-code port of Zlib.
+//
+// Thu, 08 Oct 2009 17:04
+//
+
+
+using System;
+using System.IO;
+using System.Collections.Generic;
+using System.Text;
+using Interop = System.Runtime.InteropServices;
+
+
+namespace Ionic.Zip
+{
+ /// <summary>
+ /// The ZipFile type represents a zip archive file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This is the main type in the DotNetZip class library. This class reads and
+ /// writes zip files, as defined in the <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">specification
+ /// for zip files described by PKWare</see>. The compression for this
+ /// implementation is provided by a managed-code version of Zlib, included with
+ /// DotNetZip in the classes in the Ionic.Zlib namespace.
+ /// </para>
+ ///
+ /// <para>
+ /// This class provides a general purpose zip file capability. Use it to read,
+ /// create, or update zip files. When you want to create zip files using a
+ /// <c>Stream</c> type to write the zip file, you may want to consider the <see
+ /// cref="ZipOutputStream"/> class.
+ /// </para>
+ ///
+ /// <para>
+ /// Both the <c>ZipOutputStream</c> class and the <c>ZipFile</c> class can
+ /// be used to create zip files. Both of them support many of the common zip
+ /// features, including Unicode, different compression methods and levels,
+ /// and ZIP64. They provide very similar performance when creating zip
+ /// files.
+ /// </para>
+ ///
+ /// <para>
+ /// The <c>ZipFile</c> class is generally easier to use than
+ /// <c>ZipOutputStream</c> and should be considered a higher-level interface. For
+ /// example, when creating a zip file via calls to the <c>PutNextEntry()</c> and
+ /// <c>Write()</c> methods on the <c>ZipOutputStream</c> class, the caller is
+ /// responsible for opening the file, reading the bytes from the file, writing
+ /// those bytes into the <c>ZipOutputStream</c>, setting the attributes on the
+ /// <c>ZipEntry</c>, and setting the created, last modified, and last accessed
+ /// timestamps on the zip entry. All of these things are done automatically by a
+ /// call to <see cref="ZipFile.AddFile(string,string)">ZipFile.AddFile()</see>.
+ /// For this reason, the <c>ZipOutputStream</c> is generally recommended for use
+ /// only when your application emits arbitrary data, not necessarily data from a
+ /// filesystem file, directly into a zip file, and does so using a <c>Stream</c>
+ /// metaphor.
+ /// </para>
+ ///
+ /// <para>
+ /// Aside from the differences in programming model, there are other
+ /// differences in capability between the two classes.
+ /// </para>
+ ///
+ /// <list type="bullet">
+ /// <item>
+ /// <c>ZipFile</c> can be used to read and extract zip files, in addition to
+ /// creating zip files. <c>ZipOutputStream</c> cannot read zip files. If you want
+ /// to use a stream to read zip files, check out the <see cref="ZipInputStream"/> class.
+ /// </item>
+ ///
+ /// <item>
+ /// <c>ZipOutputStream</c> does not support the creation of segmented or spanned
+ /// zip files.
+ /// </item>
+ ///
+ /// <item>
+ /// <c>ZipOutputStream</c> cannot produce a self-extracting archive.
+ /// </item>
+ /// </list>
+ ///
+ /// <para>
+ /// Be aware that the <c>ZipFile</c> class implements the <see
+ /// cref="System.IDisposable"/> interface. In order for <c>ZipFile</c> to
+ /// produce a valid zip file, you use use it within a using clause (<c>Using</c>
+ /// in VB), or call the <c>Dispose()</c> method explicitly. See the examples
+ /// for how to employ a using clause.
+ /// </para>
+ ///
+ /// </remarks>
+ [Interop.GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d00005")]
+ [Interop.ComVisible(true)]
+#if !NETCF
+ [Interop.ClassInterface(Interop.ClassInterfaceType.AutoDispatch)]
+#endif
+ internal partial class ZipFile :
+ System.Collections.IEnumerable,
+ System.Collections.Generic.IEnumerable<ZipEntry>,
+ IDisposable
+ {
+
+ #region public properties
+
+ /// <summary>
+ /// Indicates whether to perform a full scan of the zip file when reading it.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// You almost never want to use this property.
+ /// </para>
+ ///
+ /// <para>
+ /// When reading a zip file, if this flag is <c>true</c> (<c>True</c> in
+ /// VB), the entire zip archive will be scanned and searched for entries.
+ /// For large archives, this can take a very, long time. The much more
+ /// efficient default behavior is to read the zip directory, which is
+ /// stored at the end of the zip file. But, in some cases the directory is
+ /// corrupted and you need to perform a full scan of the zip file to
+ /// determine the contents of the zip file. This property lets you do
+ /// that, when necessary.
+ /// </para>
+ ///
+ /// <para>
+ /// This flag is effective only when calling <see
+ /// cref="Initialize(string)"/>. Normally you would read a ZipFile with the
+ /// static <see cref="ZipFile.Read(String)">ZipFile.Read</see>
+ /// method. But you can't set the <c>FullScan</c> property on the
+ /// <c>ZipFile</c> instance when you use a static factory method like
+ /// <c>ZipFile.Read</c>.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to read a zip file using the full scan approach,
+ /// and then save it, thereby producing a corrected zip file.
+ ///
+ /// <code lang="C#">
+ /// using (var zip = new ZipFile())
+ /// {
+ /// zip.FullScan = true;
+ /// zip.Initialize(zipFileName);
+ /// zip.Save(newName);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As New ZipFile
+ /// zip.FullScan = True
+ /// zip.Initialize(zipFileName)
+ /// zip.Save(newName)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ public bool FullScan
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// Whether to sort the ZipEntries before saving the file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// The default is false. If you have a large number of zip entries, the sort
+ /// alone can consume significant time.
+ /// </remarks>
+ ///
+ /// <example>
+ /// <code lang="C#">
+ /// using (var zip = new ZipFile())
+ /// {
+ /// zip.AddFiles(filesToAdd);
+ /// zip.SortEntriesBeforeSaving = true;
+ /// zip.Save(name);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As New ZipFile
+ /// zip.AddFiles(filesToAdd)
+ /// zip.SortEntriesBeforeSaving = True
+ /// zip.Save(name)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ public bool SortEntriesBeforeSaving
+ {
+ get;
+ set;
+ }
+
+
+
+ /// <summary>
+ /// Indicates whether NTFS Reparse Points, like junctions, should be
+ /// traversed during calls to <c>AddDirectory()</c>.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// By default, calls to AddDirectory() will traverse NTFS reparse
+ /// points, like mounted volumes, and directory junctions. An example
+ /// of a junction is the "My Music" directory in Windows Vista. In some
+ /// cases you may not want DotNetZip to traverse those directories. In
+ /// that case, set this property to false.
+ /// </remarks>
+ ///
+ /// <example>
+ /// <code lang="C#">
+ /// using (var zip = new ZipFile())
+ /// {
+ /// zip.AddDirectoryWillTraverseReparsePoints = false;
+ /// zip.AddDirectory(dirToZip,"fodder");
+ /// zip.Save(zipFileToCreate);
+ /// }
+ /// </code>
+ /// </example>
+ public bool AddDirectoryWillTraverseReparsePoints { get; set; }
+
+
+ /// <summary>
+ /// Size of the IO buffer used while saving.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// First, let me say that you really don't need to bother with this. It is
+ /// here to allow for optimizations that you probably won't make! It will work
+ /// fine if you don't set or get this property at all. Ok?
+ /// </para>
+ ///
+ /// <para>
+ /// Now that we have <em>that</em> out of the way, the fine print: This
+ /// property affects the size of the buffer that is used for I/O for each
+ /// entry contained in the zip file. When a file is read in to be compressed,
+ /// it uses a buffer given by the size here. When you update a zip file, the
+ /// data for unmodified entries is copied from the first zip file to the
+ /// other, through a buffer given by the size here.
+ /// </para>
+ ///
+ /// <para>
+ /// Changing the buffer size affects a few things: first, for larger buffer
+ /// sizes, the memory used by the <c>ZipFile</c>, obviously, will be larger
+ /// during I/O operations. This may make operations faster for very much
+ /// larger files. Last, for any given entry, when you use a larger buffer
+ /// there will be fewer progress events during I/O operations, because there's
+ /// one progress event generated for each time the buffer is filled and then
+ /// emptied.
+ /// </para>
+ ///
+ /// <para>
+ /// The default buffer size is 8k. Increasing the buffer size may speed
+ /// things up as you compress larger files. But there are no hard-and-fast
+ /// rules here, eh? You won't know til you test it. And there will be a
+ /// limit where ever larger buffers actually slow things down. So as I said
+ /// in the beginning, it's probably best if you don't set or get this property
+ /// at all.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example shows how you might set a large buffer size for efficiency when
+ /// dealing with zip entries that are larger than 1gb.
+ /// <code lang="C#">
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// zip.SaveProgress += this.zip1_SaveProgress;
+ /// zip.AddDirectory(directoryToZip, "");
+ /// zip.UseZip64WhenSaving = Zip64Option.Always;
+ /// zip.BufferSize = 65536*8; // 65536 * 8 = 512k
+ /// zip.Save(ZipFileToCreate);
+ /// }
+ /// </code>
+ /// </example>
+
+ public int BufferSize
+ {
+ get { return _BufferSize; }
+ set { _BufferSize = value; }
+ }
+
+ /// <summary>
+ /// Size of the work buffer to use for the ZLIB codec during compression.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// When doing ZLIB or Deflate compression, the library fills a buffer,
+ /// then passes it to the compressor for compression. Then the library
+ /// reads out the compressed bytes. This happens repeatedly until there
+ /// is no more uncompressed data to compress. This property sets the
+ /// size of the buffer that will be used for chunk-wise compression. In
+ /// order for the setting to take effect, your application needs to set
+ /// this property before calling one of the <c>ZipFile.Save()</c>
+ /// overloads.
+ /// </para>
+ /// <para>
+ /// Setting this affects the performance and memory efficiency of
+ /// compression and decompression. For larger files, setting this to a
+ /// larger size may improve compression performance, but the exact
+ /// numbers vary depending on available memory, the size of the streams
+ /// you are compressing, and a bunch of other variables. I don't have
+ /// good firm recommendations on how to set it. You'll have to test it
+ /// yourself. Or just leave it alone and accept the default.
+ /// </para>
+ /// </remarks>
+ public int CodecBufferSize
+ {
+ get;
+ set;
+ }
+
+ /// <summary>
+ /// Indicates whether extracted files should keep their paths as
+ /// stored in the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This property affects Extraction. It is not used when creating zip
+ /// archives.
+ /// </para>
+ ///
+ /// <para>
+ /// With this property set to <c>false</c>, the default, extracting entries
+ /// from a zip file will create files in the filesystem that have the full
+ /// path associated to the entry within the zip file. With this property set
+ /// to <c>true</c>, extracting entries from the zip file results in files
+ /// with no path: the folders are "flattened."
+ /// </para>
+ ///
+ /// <para>
+ /// An example: suppose the zip file contains entries /directory1/file1.txt and
+ /// /directory2/file2.txt. With <c>FlattenFoldersOnExtract</c> set to false,
+ /// the files created will be \directory1\file1.txt and \directory2\file2.txt.
+ /// With the property set to true, the files created are file1.txt and file2.txt.
+ /// </para>
+ ///
+ /// </remarks>
+ public bool FlattenFoldersOnExtract
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// The compression strategy to use for all entries.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Set the Strategy used by the ZLIB-compatible compressor, when
+ /// compressing entries using the DEFLATE method. Different compression
+ /// strategies work better on different sorts of data. The strategy
+ /// parameter can affect the compression ratio and the speed of
+ /// compression but not the correctness of the compresssion. For more
+ /// information see <see
+ /// cref="Ionic.Zlib.CompressionStrategy">Ionic.Zlib.CompressionStrategy</see>.
+ /// </remarks>
+ public Ionic.Zlib.CompressionStrategy Strategy
+ {
+ get { return _Strategy; }
+ set { _Strategy = value; }
+ }
+
+
+ /// <summary>
+ /// The name of the <c>ZipFile</c>, on disk.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// When the <c>ZipFile</c> instance was created by reading an archive using
+ /// one of the <c>ZipFile.Read</c> methods, this property represents the name
+ /// of the zip file that was read. When the <c>ZipFile</c> instance was
+ /// created by using the no-argument constructor, this value is <c>null</c>
+ /// (<c>Nothing</c> in VB).
+ /// </para>
+ ///
+ /// <para>
+ /// If you use the no-argument constructor, and you then explicitly set this
+ /// property, when you call <see cref="ZipFile.Save()"/>, this name will
+ /// specify the name of the zip file created. Doing so is equivalent to
+ /// calling <see cref="ZipFile.Save(String)"/>. When instantiating a
+ /// <c>ZipFile</c> by reading from a stream or byte array, the <c>Name</c>
+ /// property remains <c>null</c>. When saving to a stream, the <c>Name</c>
+ /// property is implicitly set to <c>null</c>.
+ /// </para>
+ /// </remarks>
+ public string Name
+ {
+ get { return _name; }
+ set { _name = value; }
+ }
+
+
+ /// <summary>
+ /// Sets the compression level to be used for entries subsequently added to
+ /// the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Varying the compression level used on entries can affect the
+ /// size-vs-speed tradeoff when compression and decompressing data streams
+ /// or files.
+ /// </para>
+ ///
+ /// <para>
+ /// As with some other properties on the <c>ZipFile</c> class, like <see
+ /// cref="Password"/>, <see cref="Encryption"/>, and <see
+ /// cref="ZipErrorAction"/>, setting this property on a <c>ZipFile</c>
+ /// instance will cause the specified <c>CompressionLevel</c> to be used on all
+ /// <see cref="ZipEntry"/> items that are subsequently added to the
+ /// <c>ZipFile</c> instance. If you set this property after you have added
+ /// items to the <c>ZipFile</c>, but before you have called <c>Save()</c>,
+ /// those items will not use the specified compression level.
+ /// </para>
+ ///
+ /// <para>
+ /// If you do not set this property, the default compression level is used,
+ /// which normally gives a good balance of compression efficiency and
+ /// compression speed. In some tests, using <c>BestCompression</c> can
+ /// double the time it takes to compress, while delivering just a small
+ /// increase in compression efficiency. This behavior will vary with the
+ /// type of data you compress. If you are in doubt, just leave this setting
+ /// alone, and accept the default.
+ /// </para>
+ /// </remarks>
+ public Ionic.Zlib.CompressionLevel CompressionLevel
+ {
+ get;
+ set;
+ }
+
+ /// <summary>
+ /// The compression method for the zipfile.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// By default, the compression method is <c>CompressionMethod.Deflate.</c>
+ /// </para>
+ /// </remarks>
+ /// <seealso cref="Ionic.Zip.CompressionMethod" />
+ public Ionic.Zip.CompressionMethod CompressionMethod
+ {
+ get
+ {
+ return _compressionMethod;
+ }
+ set
+ {
+ _compressionMethod = value;
+ }
+ }
+
+
+
+ /// <summary>
+ /// A comment attached to the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This property is read/write. It allows the application to specify a
+ /// comment for the <c>ZipFile</c>, or read the comment for the
+ /// <c>ZipFile</c>. After setting this property, changes are only made
+ /// permanent when you call a <c>Save()</c> method.
+ /// </para>
+ ///
+ /// <para>
+ /// According to <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">PKWARE's
+ /// zip specification</see>, the comment is not encrypted, even if there is a
+ /// password set on the zip file.
+ /// </para>
+ ///
+ /// <para>
+ /// The specification does not describe how to indicate the encoding used
+ /// on a comment string. Many "compliant" zip tools and libraries use
+ /// IBM437 as the code page for comments; DotNetZip, too, follows that
+ /// practice. On the other hand, there are situations where you want a
+ /// Comment to be encoded with something else, for example using code page
+ /// 950 "Big-5 Chinese". To fill that need, DotNetZip will encode the
+ /// comment following the same procedure it follows for encoding
+ /// filenames: (a) if <see cref="AlternateEncodingUsage"/> is
+ /// <c>Never</c>, it uses the default encoding (IBM437). (b) if <see
+ /// cref="AlternateEncodingUsage"/> is <c>Always</c>, it always uses the
+ /// alternate encoding (<see cref="AlternateEncoding"/>). (c) if <see
+ /// cref="AlternateEncodingUsage"/> is <c>AsNecessary</c>, it uses the
+ /// alternate encoding only if the default encoding is not sufficient for
+ /// encoding the comment - in other words if decoding the result does not
+ /// produce the original string. This decision is taken at the time of
+ /// the call to <c>ZipFile.Save()</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// When creating a zip archive using this library, it is possible to change
+ /// the value of <see cref="AlternateEncoding" /> between each
+ /// entry you add, and between adding entries and the call to
+ /// <c>Save()</c>. Don't do this. It will likely result in a zip file that is
+ /// not readable by any tool or application. For best interoperability, leave
+ /// <see cref="AlternateEncoding"/> alone, or specify it only
+ /// once, before adding any entries to the <c>ZipFile</c> instance.
+ /// </para>
+ ///
+ /// </remarks>
+ public string Comment
+ {
+ get { return _Comment; }
+ set
+ {
+ _Comment = value;
+ _contentsChanged = true;
+ }
+ }
+
+
+
+
+ /// <summary>
+ /// Specifies whether the Creation, Access, and Modified times for entries
+ /// added to the zip file will be emitted in “Windows format”
+ /// when the zip archive is saved.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// An application creating a zip archive can use this flag to explicitly
+ /// specify that the file times for the entries should or should not be stored
+ /// in the zip archive in the format used by Windows. By default this flag is
+ /// <c>true</c>, meaning the Windows-format times are stored in the zip
+ /// archive.
+ /// </para>
+ ///
+ /// <para>
+ /// When adding an entry from a file or directory, the Creation (<see
+ /// cref="ZipEntry.CreationTime"/>), Access (<see
+ /// cref="ZipEntry.AccessedTime"/>), and Modified (<see
+ /// cref="ZipEntry.ModifiedTime"/>) times for the given entry are
+ /// automatically set from the filesystem values. When adding an entry from a
+ /// stream or string, all three values are implicitly set to
+ /// <c>DateTime.Now</c>. Applications can also explicitly set those times by
+ /// calling <see cref="ZipEntry.SetEntryTimes(DateTime, DateTime,
+ /// DateTime)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">PKWARE's
+ /// zip specification</see> describes multiple ways to format these times in a
+ /// zip file. One is the format Windows applications normally use: 100ns ticks
+ /// since January 1, 1601 UTC. The other is a format Unix applications typically
+ /// use: seconds since January 1, 1970 UTC. Each format can be stored in an
+ /// "extra field" in the zip entry when saving the zip archive. The former
+ /// uses an extra field with a Header Id of 0x000A, while the latter uses a
+ /// header ID of 0x5455, although you probably don't need to know that.
+ /// </para>
+ ///
+ /// <para>
+ /// Not all tools and libraries can interpret these fields. Windows
+ /// compressed folders is one that can read the Windows Format timestamps,
+ /// while I believe <see href="http://www.info-zip.org/">the Infozip
+ /// tools</see> can read the Unix format timestamps. Some tools and libraries
+ /// may be able to read only one or the other. DotNetZip can read or write
+ /// times in either or both formats.
+ /// </para>
+ ///
+ /// <para>
+ /// The times stored are taken from <see cref="ZipEntry.ModifiedTime"/>, <see
+ /// cref="ZipEntry.AccessedTime"/>, and <see cref="ZipEntry.CreationTime"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// The value set here applies to all entries subsequently added to the
+ /// <c>ZipFile</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// This property is not mutually exclusive of the <see
+ /// cref="EmitTimesInUnixFormatWhenSaving" /> property. It is possible and
+ /// legal and valid to produce a zip file that contains timestamps encoded in
+ /// the Unix format as well as in the Windows format, in addition to the <see
+ /// cref="ZipEntry.LastModified">LastModified</see> time attached to each
+ /// entry in the archive, a time that is always stored in "DOS format". And,
+ /// notwithstanding the names PKWare uses for these time formats, any of them
+ /// can be read and written by any computer, on any operating system. But,
+ /// there are no guarantees that a program running on Mac or Linux will
+ /// gracefully handle a zip file with "Windows" formatted times, or that an
+ /// application that does not use DotNetZip but runs on Windows will be able to
+ /// handle file times in Unix format.
+ /// </para>
+ ///
+ /// <para>
+ /// When in doubt, test. Sorry, I haven't got a complete list of tools and
+ /// which sort of timestamps they can use and will tolerate. If you get any
+ /// good information and would like to pass it on, please do so and I will
+ /// include that information in this documentation.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example shows how to save a zip file that contains file timestamps
+ /// in a format normally used by Unix.
+ /// <code lang="C#">
+ /// using (var zip = new ZipFile())
+ /// {
+ /// // produce a zip file the Mac will like
+ /// zip.EmitTimesInWindowsFormatWhenSaving = false;
+ /// zip.EmitTimesInUnixFormatWhenSaving = true;
+ /// zip.AddDirectory(directoryToZip, "files");
+ /// zip.Save(outputFile);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As New ZipFile
+ /// '' produce a zip file the Mac will like
+ /// zip.EmitTimesInWindowsFormatWhenSaving = False
+ /// zip.EmitTimesInUnixFormatWhenSaving = True
+ /// zip.AddDirectory(directoryToZip, "files")
+ /// zip.Save(outputFile)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <seealso cref="ZipEntry.EmitTimesInWindowsFormatWhenSaving" />
+ /// <seealso cref="EmitTimesInUnixFormatWhenSaving" />
+ public bool EmitTimesInWindowsFormatWhenSaving
+ {
+ get
+ {
+ return _emitNtfsTimes;
+ }
+ set
+ {
+ _emitNtfsTimes = value;
+ }
+ }
+
+
+ /// <summary>
+ /// Specifies whether the Creation, Access, and Modified times
+ /// for entries added to the zip file will be emitted in "Unix(tm)
+ /// format" when the zip archive is saved.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// An application creating a zip archive can use this flag to explicitly
+ /// specify that the file times for the entries should or should not be stored
+ /// in the zip archive in the format used by Unix. By default this flag is
+ /// <c>false</c>, meaning the Unix-format times are not stored in the zip
+ /// archive.
+ /// </para>
+ ///
+ /// <para>
+ /// When adding an entry from a file or directory, the Creation (<see
+ /// cref="ZipEntry.CreationTime"/>), Access (<see
+ /// cref="ZipEntry.AccessedTime"/>), and Modified (<see
+ /// cref="ZipEntry.ModifiedTime"/>) times for the given entry are
+ /// automatically set from the filesystem values. When adding an entry from a
+ /// stream or string, all three values are implicitly set to DateTime.Now.
+ /// Applications can also explicitly set those times by calling <see
+ /// cref="ZipEntry.SetEntryTimes(DateTime, DateTime, DateTime)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">PKWARE's
+ /// zip specification</see> describes multiple ways to format these times in a
+ /// zip file. One is the format Windows applications normally use: 100ns ticks
+ /// since January 1, 1601 UTC. The other is a format Unix applications
+ /// typically use: seconds since January 1, 1970 UTC. Each format can be
+ /// stored in an "extra field" in the zip entry when saving the zip
+ /// archive. The former uses an extra field with a Header Id of 0x000A, while
+ /// the latter uses a header ID of 0x5455, although you probably don't need to
+ /// know that.
+ /// </para>
+ ///
+ /// <para>
+ /// Not all tools and libraries can interpret these fields. Windows
+ /// compressed folders is one that can read the Windows Format timestamps,
+ /// while I believe the <see href="http://www.info-zip.org/">Infozip</see>
+ /// tools can read the Unix format timestamps. Some tools and libraries may be
+ /// able to read only one or the other. DotNetZip can read or write times in
+ /// either or both formats.
+ /// </para>
+ ///
+ /// <para>
+ /// The times stored are taken from <see cref="ZipEntry.ModifiedTime"/>, <see
+ /// cref="ZipEntry.AccessedTime"/>, and <see cref="ZipEntry.CreationTime"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// This property is not mutually exclusive of the <see
+ /// cref="EmitTimesInWindowsFormatWhenSaving" /> property. It is possible and
+ /// legal and valid to produce a zip file that contains timestamps encoded in
+ /// the Unix format as well as in the Windows format, in addition to the <see
+ /// cref="ZipEntry.LastModified">LastModified</see> time attached to each
+ /// entry in the zip archive, a time that is always stored in "DOS
+ /// format". And, notwithstanding the names PKWare uses for these time
+ /// formats, any of them can be read and written by any computer, on any
+ /// operating system. But, there are no guarantees that a program running on
+ /// Mac or Linux will gracefully handle a zip file with "Windows" formatted
+ /// times, or that an application that does not use DotNetZip but runs on
+ /// Windows will be able to handle file times in Unix format.
+ /// </para>
+ ///
+ /// <para>
+ /// When in doubt, test. Sorry, I haven't got a complete list of tools and
+ /// which sort of timestamps they can use and will tolerate. If you get any
+ /// good information and would like to pass it on, please do so and I will
+ /// include that information in this documentation.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <seealso cref="ZipEntry.EmitTimesInUnixFormatWhenSaving" />
+ /// <seealso cref="EmitTimesInWindowsFormatWhenSaving" />
+ public bool EmitTimesInUnixFormatWhenSaving
+ {
+ get
+ {
+ return _emitUnixTimes;
+ }
+ set
+ {
+ _emitUnixTimes = value;
+ }
+ }
+
+
+
+ /// <summary>
+ /// Indicates whether verbose output is sent to the <see
+ /// cref="StatusMessageTextWriter"/> during <c>AddXxx()</c> and
+ /// <c>ReadXxx()</c> operations.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This is a <em>synthetic</em> property. It returns true if the <see
+ /// cref="StatusMessageTextWriter"/> is non-null.
+ /// </remarks>
+ internal bool Verbose
+ {
+ get { return (_StatusMessageTextWriter != null); }
+ }
+
+
+ /// <summary>
+ /// Returns true if an entry by the given name exists in the ZipFile.
+ /// </summary>
+ ///
+ /// <param name='name'>the name of the entry to find</param>
+ /// <returns>true if an entry with the given name exists; otherwise false.
+ /// </returns>
+ public bool ContainsEntry(string name)
+ {
+ // workitem 12534
+ return _entries.ContainsKey(SharedUtilities.NormalizePathForUseInZipFile(name));
+ }
+
+
+
+ /// <summary>
+ /// Indicates whether to perform case-sensitive matching on the filename when
+ /// retrieving entries in the zipfile via the string-based indexer.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// The default value is <c>false</c>, which means don't do case-sensitive
+ /// matching. In other words, retrieving zip["ReadMe.Txt"] is the same as
+ /// zip["readme.txt"]. It really makes sense to set this to <c>true</c> only
+ /// if you are not running on Windows, which has case-insensitive
+ /// filenames. But since this library is not built for non-Windows platforms,
+ /// in most cases you should just leave this property alone.
+ /// </remarks>
+ public bool CaseSensitiveRetrieval
+ {
+ get
+ {
+ return _CaseSensitiveRetrieval;
+ }
+
+ set
+ {
+ // workitem 9868
+ if (value != _CaseSensitiveRetrieval)
+ {
+ _CaseSensitiveRetrieval = value;
+ _initEntriesDictionary();
+ }
+ }
+ }
+
+
+ /// <summary>
+ /// Indicates whether to encode entry filenames and entry comments using Unicode
+ /// (UTF-8).
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// <see href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">The
+ /// PKWare zip specification</see> provides for encoding file names and file
+ /// comments in either the IBM437 code page, or in UTF-8. This flag selects
+ /// the encoding according to that specification. By default, this flag is
+ /// false, and filenames and comments are encoded into the zip file in the
+ /// IBM437 codepage. Setting this flag to true will specify that filenames
+ /// and comments that cannot be encoded with IBM437 will be encoded with
+ /// UTF-8.
+ /// </para>
+ ///
+ /// <para>
+ /// Zip files created with strict adherence to the PKWare specification with
+ /// respect to UTF-8 encoding can contain entries with filenames containing
+ /// any combination of Unicode characters, including the full range of
+ /// characters from Chinese, Latin, Hebrew, Greek, Cyrillic, and many other
+ /// alphabets. However, because at this time, the UTF-8 portion of the PKWare
+ /// specification is not broadly supported by other zip libraries and
+ /// utilities, such zip files may not be readable by your favorite zip tool or
+ /// archiver. In other words, interoperability will decrease if you set this
+ /// flag to true.
+ /// </para>
+ ///
+ /// <para>
+ /// In particular, Zip files created with strict adherence to the PKWare
+ /// specification with respect to UTF-8 encoding will not work well with
+ /// Explorer in Windows XP or Windows Vista, because Windows compressed
+ /// folders, as far as I know, do not support UTF-8 in zip files. Vista can
+ /// read the zip files, but shows the filenames incorrectly. Unpacking from
+ /// Windows Vista Explorer will result in filenames that have rubbish
+ /// characters in place of the high-order UTF-8 bytes.
+ /// </para>
+ ///
+ /// <para>
+ /// Also, zip files that use UTF-8 encoding will not work well with Java
+ /// applications that use the java.util.zip classes, as of v5.0 of the Java
+ /// runtime. The Java runtime does not correctly implement the PKWare
+ /// specification in this regard.
+ /// </para>
+ ///
+ /// <para>
+ /// As a result, we have the unfortunate situation that "correct" behavior by
+ /// the DotNetZip library with regard to Unicode encoding of filenames during
+ /// zip creation will result in zip files that are readable by strictly
+ /// compliant and current tools (for example the most recent release of the
+ /// commercial WinZip tool); but these zip files will not be readable by
+ /// various other tools or libraries, including Windows Explorer.
+ /// </para>
+ ///
+ /// <para>
+ /// The DotNetZip library can read and write zip files with UTF8-encoded
+ /// entries, according to the PKware spec. If you use DotNetZip for both
+ /// creating and reading the zip file, and you use UTF-8, there will be no
+ /// loss of information in the filenames. For example, using a self-extractor
+ /// created by this library will allow you to unpack files correctly with no
+ /// loss of information in the filenames.
+ /// </para>
+ ///
+ /// <para>
+ /// If you do not set this flag, it will remain false. If this flag is false,
+ /// your <c>ZipFile</c> will encode all filenames and comments using the
+ /// IBM437 codepage. This can cause "loss of information" on some filenames,
+ /// but the resulting zipfile will be more interoperable with other
+ /// utilities. As an example of the loss of information, diacritics can be
+ /// lost. The o-tilde character will be down-coded to plain o. The c with a
+ /// cedilla (Unicode 0xE7) used in Portugese will be downcoded to a c.
+ /// Likewise, the O-stroke character (Unicode 248), used in Danish and
+ /// Norwegian, will be down-coded to plain o. Chinese characters cannot be
+ /// represented in codepage IBM437; when using the default encoding, Chinese
+ /// characters in filenames will be represented as ?. These are all examples
+ /// of "information loss".
+ /// </para>
+ ///
+ /// <para>
+ /// The loss of information associated to the use of the IBM437 encoding is
+ /// inconvenient, and can also lead to runtime errors. For example, using
+ /// IBM437, any sequence of 4 Chinese characters will be encoded as ????. If
+ /// your application creates a <c>ZipFile</c>, then adds two files, each with
+ /// names of four Chinese characters each, this will result in a duplicate
+ /// filename exception. In the case where you add a single file with a name
+ /// containing four Chinese characters, calling Extract() on the entry that
+ /// has question marks in the filename will result in an exception, because
+ /// the question mark is not legal for use within filenames on Windows. These
+ /// are just a few examples of the problems associated to loss of information.
+ /// </para>
+ ///
+ /// <para>
+ /// This flag is independent of the encoding of the content within the entries
+ /// in the zip file. Think of the zip file as a container - it supports an
+ /// encoding. Within the container are other "containers" - the file entries
+ /// themselves. The encoding within those entries is independent of the
+ /// encoding of the zip archive container for those entries.
+ /// </para>
+ ///
+ /// <para>
+ /// Rather than specify the encoding in a binary fashion using this flag, an
+ /// application can specify an arbitrary encoding via the <see
+ /// cref="ProvisionalAlternateEncoding"/> property. Setting the encoding
+ /// explicitly when creating zip archives will result in non-compliant zip
+ /// files that, curiously, are fairly interoperable. The challenge is, the
+ /// PKWare specification does not provide for a way to specify that an entry
+ /// in a zip archive uses a code page that is neither IBM437 nor UTF-8.
+ /// Therefore if you set the encoding explicitly when creating a zip archive,
+ /// you must take care upon reading the zip archive to use the same code page.
+ /// If you get it wrong, the behavior is undefined and may result in incorrect
+ /// filenames, exceptions, stomach upset, hair loss, and acne.
+ /// </para>
+ /// </remarks>
+ /// <seealso cref="ProvisionalAlternateEncoding"/>
+ [Obsolete("Beginning with v1.9.1.6 of DotNetZip, this property is obsolete. It will be removed in a future version of the library. Your applications should use AlternateEncoding and AlternateEncodingUsage instead.")]
+ public bool UseUnicodeAsNecessary
+ {
+ get
+ {
+ return (_alternateEncoding == System.Text.Encoding.GetEncoding("UTF-8")) &&
+ (_alternateEncodingUsage == ZipOption.AsNecessary);
+ }
+ set
+ {
+ if (value)
+ {
+ _alternateEncoding = System.Text.Encoding.GetEncoding("UTF-8");
+ _alternateEncodingUsage = ZipOption.AsNecessary;
+
+ }
+ else
+ {
+ _alternateEncoding = Ionic.Zip.ZipFile.DefaultEncoding;
+ _alternateEncodingUsage = ZipOption.Never;
+ }
+ }
+ }
+
+
+ /// <summary>
+ /// Specify whether to use ZIP64 extensions when saving a zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// When creating a zip file, the default value for the property is <see
+ /// cref="Zip64Option.Never"/>. <see cref="Zip64Option.AsNecessary"/> is
+ /// safest, in the sense that you will not get an Exception if a pre-ZIP64
+ /// limit is exceeded.
+ /// </para>
+ ///
+ /// <para>
+ /// You may set the property at any time before calling Save().
+ /// </para>
+ ///
+ /// <para>
+ /// When reading a zip file via the <c>Zipfile.Read()</c> method, DotNetZip
+ /// will properly read ZIP64-endowed zip archives, regardless of the value of
+ /// this property. DotNetZip will always read ZIP64 archives. This property
+ /// governs only whether DotNetZip will write them. Therefore, when updating
+ /// archives, be careful about setting this property after reading an archive
+ /// that may use ZIP64 extensions.
+ /// </para>
+ ///
+ /// <para>
+ /// An interesting question is, if you have set this property to
+ /// <c>AsNecessary</c>, and then successfully saved, does the resulting
+ /// archive use ZIP64 extensions or not? To learn this, check the <see
+ /// cref="OutputUsedZip64"/> property, after calling <c>Save()</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// Have you thought about
+ /// <see href="http://cheeso.members.winisp.net/DotNetZipDonate.aspx">donating</see>?
+ /// </para>
+ ///
+ /// </remarks>
+ /// <seealso cref="RequiresZip64"/>
+ public Zip64Option UseZip64WhenSaving
+ {
+ get
+ {
+ return _zip64;
+ }
+ set
+ {
+ _zip64 = value;
+ }
+ }
+
+
+
+ /// <summary>
+ /// Indicates whether the archive requires ZIP64 extensions.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This property is <c>null</c> (or <c>Nothing</c> in VB) if the archive has
+ /// not been saved, and there are fewer than 65334 <c>ZipEntry</c> items
+ /// contained in the archive.
+ /// </para>
+ ///
+ /// <para>
+ /// The <c>Value</c> is true if any of the following four conditions holds:
+ /// the uncompressed size of any entry is larger than 0xFFFFFFFF; the
+ /// compressed size of any entry is larger than 0xFFFFFFFF; the relative
+ /// offset of any entry within the zip archive is larger than 0xFFFFFFFF; or
+ /// there are more than 65534 entries in the archive. (0xFFFFFFFF =
+ /// 4,294,967,295). The result may not be known until a <c>Save()</c> is attempted
+ /// on the zip archive. The Value of this <see cref="System.Nullable"/>
+ /// property may be set only AFTER one of the Save() methods has been called.
+ /// </para>
+ ///
+ /// <para>
+ /// If none of the four conditions holds, and the archive has been saved, then
+ /// the <c>Value</c> is false.
+ /// </para>
+ ///
+ /// <para>
+ /// A <c>Value</c> of false does not indicate that the zip archive, as saved,
+ /// does not use ZIP64. It merely indicates that ZIP64 is not required. An
+ /// archive may use ZIP64 even when not required if the <see
+ /// cref="ZipFile.UseZip64WhenSaving"/> property is set to <see
+ /// cref="Zip64Option.Always"/>, or if the <see
+ /// cref="ZipFile.UseZip64WhenSaving"/> property is set to <see
+ /// cref="Zip64Option.AsNecessary"/> and the output stream was not
+ /// seekable. Use the <see cref="OutputUsedZip64"/> property to determine if
+ /// the most recent <c>Save()</c> method resulted in an archive that utilized
+ /// the ZIP64 extensions.
+ /// </para>
+ ///
+ /// </remarks>
+ /// <seealso cref="UseZip64WhenSaving"/>
+ /// <seealso cref="OutputUsedZip64"/>
+ public Nullable<bool> RequiresZip64
+ {
+ get
+ {
+ if (_entries.Count > 65534)
+ return new Nullable<bool>(true);
+
+ // If the <c>ZipFile</c> has not been saved or if the contents have changed, then
+ // it is not known if ZIP64 is required.
+ if (!_hasBeenSaved || _contentsChanged) return null;
+
+ // Whether ZIP64 is required is knowable.
+ foreach (ZipEntry e in _entries.Values)
+ {
+ if (e.RequiresZip64.Value) return new Nullable<bool>(true);
+ }
+
+ return new Nullable<bool>(false);
+ }
+ }
+
+
+ /// <summary>
+ /// Indicates whether the most recent <c>Save()</c> operation used ZIP64 extensions.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The use of ZIP64 extensions within an archive is not always necessary, and
+ /// for interoperability concerns, it may be desired to NOT use ZIP64 if
+ /// possible. The <see cref="ZipFile.UseZip64WhenSaving"/> property can be
+ /// set to use ZIP64 extensions only when necessary. In those cases,
+ /// Sometimes applications want to know whether a Save() actually used ZIP64
+ /// extensions. Applications can query this read-only property to learn
+ /// whether ZIP64 has been used in a just-saved <c>ZipFile</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// The value is <c>null</c> (or <c>Nothing</c> in VB) if the archive has not
+ /// been saved.
+ /// </para>
+ ///
+ /// <para>
+ /// Non-null values (<c>HasValue</c> is true) indicate whether ZIP64
+ /// extensions were used during the most recent <c>Save()</c> operation. The
+ /// ZIP64 extensions may have been used as required by any particular entry
+ /// because of its uncompressed or compressed size, or because the archive is
+ /// larger than 4294967295 bytes, or because there are more than 65534 entries
+ /// in the archive, or because the <c>UseZip64WhenSaving</c> property was set
+ /// to <see cref="Zip64Option.Always"/>, or because the
+ /// <c>UseZip64WhenSaving</c> property was set to <see
+ /// cref="Zip64Option.AsNecessary"/> and the output stream was not seekable.
+ /// The value of this property does not indicate the reason the ZIP64
+ /// extensions were used.
+ /// </para>
+ ///
+ /// </remarks>
+ /// <seealso cref="UseZip64WhenSaving"/>
+ /// <seealso cref="RequiresZip64"/>
+ public Nullable<bool> OutputUsedZip64
+ {
+ get
+ {
+ return _OutputUsesZip64;
+ }
+ }
+
+
+ /// <summary>
+ /// Indicates whether the most recent <c>Read()</c> operation read a zip file that uses
+ /// ZIP64 extensions.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This property will return null (Nothing in VB) if you've added an entry after reading
+ /// the zip file.
+ /// </remarks>
+ public Nullable<bool> InputUsesZip64
+ {
+ get
+ {
+ if (_entries.Count > 65534)
+ return true;
+
+ foreach (ZipEntry e in this)
+ {
+ // if any entry was added after reading the zip file, then the result is null
+ if (e.Source != ZipEntrySource.ZipFile) return null;
+
+ // if any entry read from the zip used zip64, then the result is true
+ if (e._InputUsesZip64) return true;
+ }
+ return false;
+ }
+ }
+
+
+ /// <summary>
+ /// The text encoding to use when writing new entries to the <c>ZipFile</c>,
+ /// for those entries that cannot be encoded with the default (IBM437)
+ /// encoding; or, the text encoding that was used when reading the entries
+ /// from the <c>ZipFile</c>.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// In <see href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">its
+ /// zip specification</see>, PKWare describes two options for encoding
+ /// filenames and comments: using IBM437 or UTF-8. But, some archiving tools
+ /// or libraries do not follow the specification, and instead encode
+ /// characters using the system default code page. For example, WinRAR when
+ /// run on a machine in Shanghai may encode filenames with the Big-5 Chinese
+ /// (950) code page. This behavior is contrary to the Zip specification, but
+ /// it occurs anyway.
+ /// </para>
+ ///
+ /// <para>
+ /// When using DotNetZip to write zip archives that will be read by one of
+ /// these other archivers, set this property to specify the code page to use
+ /// when encoding the <see cref="ZipEntry.FileName"/> and <see
+ /// cref="ZipEntry.Comment"/> for each <c>ZipEntry</c> in the zip file, for
+ /// values that cannot be encoded with the default codepage for zip files,
+ /// IBM437. This is why this property is "provisional". In all cases, IBM437
+ /// is used where possible, in other words, where no loss of data would
+ /// result. It is possible, therefore, to have a given entry with a
+ /// <c>Comment</c> encoded in IBM437 and a <c>FileName</c> encoded with the
+ /// specified "provisional" codepage.
+ /// </para>
+ ///
+ /// <para>
+ /// Be aware that a zip file created after you've explicitly set the <see
+ /// cref="ProvisionalAlternateEncoding" /> property to a value other than
+ /// IBM437 may not be compliant to the PKWare specification, and may not be
+ /// readable by compliant archivers. On the other hand, many (most?)
+ /// archivers are non-compliant and can read zip files created in arbitrary
+ /// code pages. The trick is to use or specify the proper codepage when
+ /// reading the zip.
+ /// </para>
+ ///
+ /// <para>
+ /// When creating a zip archive using this library, it is possible to change
+ /// the value of <see cref="ProvisionalAlternateEncoding" /> between each
+ /// entry you add, and between adding entries and the call to
+ /// <c>Save()</c>. Don't do this. It will likely result in a zipfile that is
+ /// not readable. For best interoperability, either leave <see
+ /// cref="ProvisionalAlternateEncoding" /> alone, or specify it only once,
+ /// before adding any entries to the <c>ZipFile</c> instance. There is one
+ /// exception to this recommendation, described later.
+ /// </para>
+ ///
+ /// <para>
+ /// When using an arbitrary, non-UTF8 code page for encoding, there is no
+ /// standard way for the creator application - whether DotNetZip, WinZip,
+ /// WinRar, or something else - to formally specify in the zip file which
+ /// codepage has been used for the entries. As a result, readers of zip files
+ /// are not able to inspect the zip file and determine the codepage that was
+ /// used for the entries contained within it. It is left to the application
+ /// or user to determine the necessary codepage when reading zip files encoded
+ /// this way. In other words, if you explicitly specify the codepage when you
+ /// create the zipfile, you must explicitly specify the same codepage when
+ /// reading the zipfile.
+ /// </para>
+ ///
+ /// <para>
+ /// The way you specify the code page to use when reading a zip file varies
+ /// depending on the tool or library you use to read the zip. In DotNetZip,
+ /// you use a ZipFile.Read() method that accepts an encoding parameter. It
+ /// isn't possible with Windows Explorer, as far as I know, to specify an
+ /// explicit codepage to use when reading a zip. If you use an incorrect
+ /// codepage when reading a zipfile, you will get entries with filenames that
+ /// are incorrect, and the incorrect filenames may even contain characters
+ /// that are not legal for use within filenames in Windows. Extracting entries
+ /// with illegal characters in the filenames will lead to exceptions. It's too
+ /// bad, but this is just the way things are with code pages in zip
+ /// files. Caveat Emptor.
+ /// </para>
+ ///
+ /// <para>
+ /// Example: Suppose you create a zipfile that contains entries with
+ /// filenames that have Danish characters. If you use <see
+ /// cref="ProvisionalAlternateEncoding" /> equal to "iso-8859-1" (cp 28591),
+ /// the filenames will be correctly encoded in the zip. But, to read that
+ /// zipfile correctly, you have to specify the same codepage at the time you
+ /// read it. If try to read that zip file with Windows Explorer or another
+ /// application that is not flexible with respect to the codepage used to
+ /// decode filenames in zipfiles, you will get a filename like "Inf°.txt".
+ /// </para>
+ ///
+ /// <para>
+ /// When using DotNetZip to read a zip archive, and the zip archive uses an
+ /// arbitrary code page, you must specify the encoding to use before or when
+ /// the <c>Zipfile</c> is READ. This means you must use a <c>ZipFile.Read()</c>
+ /// method that allows you to specify a System.Text.Encoding parameter. Setting
+ /// the ProvisionalAlternateEncoding property after your application has read in
+ /// the zip archive will not affect the entry names of entries that have already
+ /// been read in.
+ /// </para>
+ ///
+ /// <para>
+ /// And now, the exception to the rule described above. One strategy for
+ /// specifying the code page for a given zip file is to describe the code page
+ /// in a human-readable form in the Zip comment. For example, the comment may
+ /// read "Entries in this archive are encoded in the Big5 code page". For
+ /// maximum interoperability, the zip comment in this case should be encoded
+ /// in the default, IBM437 code page. In this case, the zip comment is
+ /// encoded using a different page than the filenames. To do this, Specify
+ /// <c>ProvisionalAlternateEncoding</c> to your desired region-specific code
+ /// page, once before adding any entries, and then reset
+ /// <c>ProvisionalAlternateEncoding</c> to IBM437 before setting the <see
+ /// cref="Comment"/> property and calling Save().
+ /// </para>
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example shows how to read a zip file using the Big-5 Chinese code page
+ /// (950), and extract each entry in the zip file. For this code to work as
+ /// desired, the <c>Zipfile</c> must have been created using the big5 code page
+ /// (CP950). This is typical, for example, when using WinRar on a machine with
+ /// CP950 set as the default code page. In that case, the names of entries
+ /// within the Zip archive will be stored in that code page, and reading the zip
+ /// archive must be done using that code page. If the application did not use
+ /// the correct code page in <c>ZipFile.Read()</c>, then names of entries within the
+ /// zip archive would not be correctly retrieved.
+ /// <code>
+ /// using (var zip = ZipFile.Read(zipFileName, System.Text.Encoding.GetEncoding("big5")))
+ /// {
+ /// // retrieve and extract an entry using a name encoded with CP950
+ /// zip[MyDesiredEntry].Extract("unpack");
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As ZipFile = ZipFile.Read(ZipToExtract, System.Text.Encoding.GetEncoding("big5"))
+ /// ' retrieve and extract an entry using a name encoded with CP950
+ /// zip(MyDesiredEntry).Extract("unpack")
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.DefaultEncoding">DefaultEncoding</seealso>
+ [Obsolete("use AlternateEncoding instead.")]
+ public System.Text.Encoding ProvisionalAlternateEncoding
+ {
+ get
+ {
+ if (_alternateEncodingUsage == ZipOption.AsNecessary)
+ return _alternateEncoding;
+ return null;
+ }
+ set
+ {
+ _alternateEncoding = value;
+ _alternateEncodingUsage = ZipOption.AsNecessary;
+ }
+ }
+
+
+ /// <summary>
+ /// A Text Encoding to use when encoding the filenames and comments for
+ /// all the ZipEntry items, during a ZipFile.Save() operation.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// Whether the encoding specified here is used during the save depends
+ /// on <see cref="AlternateEncodingUsage"/>.
+ /// </para>
+ /// </remarks>
+ public System.Text.Encoding AlternateEncoding
+ {
+ get
+ {
+ return _alternateEncoding;
+ }
+ set
+ {
+ _alternateEncoding = value;
+ }
+ }
+
+
+ /// <summary>
+ /// A flag that tells if and when this instance should apply
+ /// AlternateEncoding to encode the filenames and comments associated to
+ /// of ZipEntry objects contained within this instance.
+ /// </summary>
+ public ZipOption AlternateEncodingUsage
+ {
+ get
+ {
+ return _alternateEncodingUsage;
+ }
+ set
+ {
+ _alternateEncodingUsage = value;
+ }
+ }
+
+
+ /// <summary>
+ /// The default text encoding used in zip archives. It is numeric 437, also
+ /// known as IBM437.
+ /// </summary>
+ /// <seealso cref="Ionic.Zip.ZipFile.ProvisionalAlternateEncoding"/>
+ internal static System.Text.Encoding DefaultEncoding
+ {
+ get
+ {
+ return _defaultEncoding;
+ }
+ }
+
+
+ /// <summary>
+ /// Gets or sets the <c>TextWriter</c> to which status messages are delivered
+ /// for the instance.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// If the TextWriter is set to a non-null value, then verbose output is sent
+ /// to the <c>TextWriter</c> during <c>Add</c><c>, Read</c><c>, Save</c> and
+ /// <c>Extract</c> operations. Typically, console applications might use
+ /// <c>Console.Out</c> and graphical or headless applications might use a
+ /// <c>System.IO.StringWriter</c>. The output of this is suitable for viewing
+ /// by humans.
+ /// </remarks>
+ ///
+ /// <example>
+ /// <para>
+ /// In this example, a console application instantiates a <c>ZipFile</c>, then
+ /// sets the <c>StatusMessageTextWriter</c> to <c>Console.Out</c>. At that
+ /// point, all verbose status messages for that <c>ZipFile</c> are sent to the
+ /// console.
+ /// </para>
+ ///
+ /// <code lang="C#">
+ /// using (ZipFile zip= ZipFile.Read(FilePath))
+ /// {
+ /// zip.StatusMessageTextWriter= System.Console.Out;
+ /// // messages are sent to the console during extraction
+ /// zip.ExtractAll();
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As ZipFile = ZipFile.Read(FilePath)
+ /// zip.StatusMessageTextWriter= System.Console.Out
+ /// 'Status Messages will be sent to the console during extraction
+ /// zip.ExtractAll()
+ /// End Using
+ /// </code>
+ ///
+ /// <para>
+ /// In this example, a Windows Forms application instantiates a
+ /// <c>ZipFile</c>, then sets the <c>StatusMessageTextWriter</c> to a
+ /// <c>StringWriter</c>. At that point, all verbose status messages for that
+ /// <c>ZipFile</c> are sent to the <c>StringWriter</c>.
+ /// </para>
+ ///
+ /// <code lang="C#">
+ /// var sw = new System.IO.StringWriter();
+ /// using (ZipFile zip= ZipFile.Read(FilePath))
+ /// {
+ /// zip.StatusMessageTextWriter= sw;
+ /// zip.ExtractAll();
+ /// }
+ /// Console.WriteLine("{0}", sw.ToString());
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Dim sw as New System.IO.StringWriter
+ /// Using zip As ZipFile = ZipFile.Read(FilePath)
+ /// zip.StatusMessageTextWriter= sw
+ /// zip.ExtractAll()
+ /// End Using
+ /// 'Status Messages are now available in sw
+ ///
+ /// </code>
+ /// </example>
+ public TextWriter StatusMessageTextWriter
+ {
+ get { return _StatusMessageTextWriter; }
+ set { _StatusMessageTextWriter = value; }
+ }
+
+
+
+
+ /// <summary>
+ /// Gets or sets the name for the folder to store the temporary file
+ /// this library writes when saving a zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This library will create a temporary file when saving a Zip archive to a
+ /// file. This file is written when calling one of the <c>Save()</c> methods
+ /// that does not save to a stream, or one of the <c>SaveSelfExtractor()</c>
+ /// methods.
+ /// </para>
+ ///
+ /// <para>
+ /// By default, the library will create the temporary file in the directory
+ /// specified for the file itself, via the <see cref="Name"/> property or via
+ /// the <see cref="ZipFile.Save(String)"/> method.
+ /// </para>
+ ///
+ /// <para>
+ /// Setting this property allows applications to override this default
+ /// behavior, so that the library will create the temporary file in the
+ /// specified folder. For example, to have the library create the temporary
+ /// file in the current working directory, regardless where the <c>ZipFile</c>
+ /// is saved, specfy ".". To revert to the default behavior, set this
+ /// property to <c>null</c> (<c>Nothing</c> in VB).
+ /// </para>
+ ///
+ /// <para>
+ /// When setting the property to a non-null value, the folder specified must
+ /// exist; if it does not an exception is thrown. The application should have
+ /// write and delete permissions on the folder. The permissions are not
+ /// explicitly checked ahead of time; if the application does not have the
+ /// appropriate rights, an exception will be thrown at the time <c>Save()</c>
+ /// is called.
+ /// </para>
+ ///
+ /// <para>
+ /// There is no temporary file created when reading a zip archive. When
+ /// saving to a Stream, there is no temporary file created. For example, if
+ /// the application is an ASP.NET application and calls <c>Save()</c>
+ /// specifying the <c>Response.OutputStream</c> as the output stream, there is
+ /// no temporary file created.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <exception cref="System.IO.FileNotFoundException">
+ /// Thrown when setting the property if the directory does not exist.
+ /// </exception>
+ ///
+ public String TempFileFolder
+ {
+ get { return _TempFileFolder; }
+
+ set
+ {
+ _TempFileFolder = value;
+ if (value == null) return;
+
+ if (!Directory.Exists(value))
+ throw new FileNotFoundException(String.Format("That directory ({0}) does not exist.", value));
+
+ }
+ }
+
+ /// <summary>
+ /// Sets the password to be used on the <c>ZipFile</c> instance.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// When writing a zip archive, this password is applied to the entries, not
+ /// to the zip archive itself. It applies to any <c>ZipEntry</c> subsequently
+ /// added to the <c>ZipFile</c>, using one of the <c>AddFile</c>,
+ /// <c>AddDirectory</c>, <c>AddEntry</c>, or <c>AddItem</c> methods, etc.
+ /// When reading a zip archive, this property applies to any entry
+ /// subsequently extracted from the <c>ZipFile</c> using one of the Extract
+ /// methods on the <c>ZipFile</c> class.
+ /// </para>
+ ///
+ /// <para>
+ /// When writing a zip archive, keep this in mind: though the password is set
+ /// on the ZipFile object, according to the Zip spec, the "directory" of the
+ /// archive - in other words the list of entries or files contained in the archive - is
+ /// not encrypted with the password, or protected in any way. If you set the
+ /// Password property, the password actually applies to individual entries
+ /// that are added to the archive, subsequent to the setting of this property.
+ /// The list of filenames in the archive that is eventually created will
+ /// appear in clear text, but the contents of the individual files are
+ /// encrypted. This is how Zip encryption works.
+ /// </para>
+ ///
+ /// <para>
+ /// One simple way around this limitation is to simply double-wrap sensitive
+ /// filenames: Store the files in a zip file, and then store that zip file
+ /// within a second, "outer" zip file. If you apply a password to the outer
+ /// zip file, then readers will be able to see that the outer zip file
+ /// contains an inner zip file. But readers will not be able to read the
+ /// directory or file list of the inner zip file.
+ /// </para>
+ ///
+ /// <para>
+ /// If you set the password on the <c>ZipFile</c>, and then add a set of files
+ /// to the archive, then each entry is encrypted with that password. You may
+ /// also want to change the password between adding different entries. If you
+ /// set the password, add an entry, then set the password to <c>null</c>
+ /// (<c>Nothing</c> in VB), and add another entry, the first entry is
+ /// encrypted and the second is not. If you call <c>AddFile()</c>, then set
+ /// the <c>Password</c> property, then call <c>ZipFile.Save</c>, the file
+ /// added will not be password-protected, and no warning will be generated.
+ /// </para>
+ ///
+ /// <para>
+ /// When setting the Password, you may also want to explicitly set the <see
+ /// cref="Encryption"/> property, to specify how to encrypt the entries added
+ /// to the ZipFile. If you set the Password to a non-null value and do not
+ /// set <see cref="Encryption"/>, then PKZip 2.0 ("Weak") encryption is used.
+ /// This encryption is relatively weak but is very interoperable. If you set
+ /// the password to a <c>null</c> value (<c>Nothing</c> in VB), Encryption is
+ /// reset to None.
+ /// </para>
+ ///
+ /// <para>
+ /// All of the preceding applies to writing zip archives, in other words when
+ /// you use one of the Save methods. To use this property when reading or an
+ /// existing ZipFile, do the following: set the Password property on the
+ /// <c>ZipFile</c>, then call one of the Extract() overloads on the <see
+ /// cref="ZipEntry" />. In this case, the entry is extracted using the
+ /// <c>Password</c> that is specified on the <c>ZipFile</c> instance. If you
+ /// have not set the <c>Password</c> property, then the password is
+ /// <c>null</c>, and the entry is extracted with no password.
+ /// </para>
+ ///
+ /// <para>
+ /// If you set the Password property on the <c>ZipFile</c>, then call
+ /// <c>Extract()</c> an entry that has not been encrypted with a password, the
+ /// password is not used for that entry, and the <c>ZipEntry</c> is extracted
+ /// as normal. In other words, the password is used only if necessary.
+ /// </para>
+ ///
+ /// <para>
+ /// The <see cref="ZipEntry"/> class also has a <see
+ /// cref="ZipEntry.Password">Password</see> property. It takes precedence
+ /// over this property on the <c>ZipFile</c>. Typically, you would use the
+ /// per-entry Password when most entries in the zip archive use one password,
+ /// and a few entries use a different password. If all entries in the zip
+ /// file use the same password, then it is simpler to just set this property
+ /// on the <c>ZipFile</c> itself, whether creating a zip archive or extracting
+ /// a zip archive.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// <para>
+ /// This example creates a zip file, using password protection for the
+ /// entries, and then extracts the entries from the zip file. When creating
+ /// the zip file, the Readme.txt file is not protected with a password, but
+ /// the other two are password-protected as they are saved. During extraction,
+ /// each file is extracted with the appropriate password.
+ /// </para>
+ /// <code>
+ /// // create a file with encryption
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// zip.AddFile("ReadMe.txt");
+ /// zip.Password= "!Secret1";
+ /// zip.AddFile("MapToTheSite-7440-N49th.png");
+ /// zip.AddFile("2008-Regional-Sales-Report.pdf");
+ /// zip.Save("EncryptedArchive.zip");
+ /// }
+ ///
+ /// // extract entries that use encryption
+ /// using (ZipFile zip = ZipFile.Read("EncryptedArchive.zip"))
+ /// {
+ /// zip.Password= "!Secret1";
+ /// zip.ExtractAll("extractDir");
+ /// }
+ ///
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As New ZipFile
+ /// zip.AddFile("ReadMe.txt")
+ /// zip.Password = "123456!"
+ /// zip.AddFile("MapToTheSite-7440-N49th.png")
+ /// zip.Password= "!Secret1";
+ /// zip.AddFile("2008-Regional-Sales-Report.pdf")
+ /// zip.Save("EncryptedArchive.zip")
+ /// End Using
+ ///
+ ///
+ /// ' extract entries that use encryption
+ /// Using (zip as ZipFile = ZipFile.Read("EncryptedArchive.zip"))
+ /// zip.Password= "!Secret1"
+ /// zip.ExtractAll("extractDir")
+ /// End Using
+ ///
+ /// </code>
+ ///
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.Encryption">ZipFile.Encryption</seealso>
+ /// <seealso cref="Ionic.Zip.ZipEntry.Password">ZipEntry.Password</seealso>
+ public String Password
+ {
+ set
+ {
+ _Password = value;
+ if (_Password == null)
+ {
+ Encryption = EncryptionAlgorithm.None;
+ }
+ else if (Encryption == EncryptionAlgorithm.None)
+ {
+ Encryption = EncryptionAlgorithm.PkzipWeak;
+ }
+ }
+ private get
+ {
+ return _Password;
+ }
+ }
+
+
+
+
+
+ /// <summary>
+ /// The action the library should take when extracting a file that already
+ /// exists.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This property affects the behavior of the Extract methods (one of the
+ /// <c>Extract()</c> or <c>ExtractWithPassword()</c> overloads), when
+ /// extraction would would overwrite an existing filesystem file. If you do
+ /// not set this property, the library throws an exception when extracting an
+ /// entry would overwrite an existing file.
+ /// </para>
+ ///
+ /// <para>
+ /// This property has no effect when extracting to a stream, or when the file
+ /// to be extracted does not already exist.
+ /// </para>
+ /// </remarks>
+ /// <seealso cref="Ionic.Zip.ZipEntry.ExtractExistingFile"/>
+ public ExtractExistingFileAction ExtractExistingFile
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// The action the library should take when an error is encountered while
+ /// opening or reading files as they are saved into a zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Errors can occur as a file is being saved to the zip archive. For
+ /// example, the File.Open may fail, or a File.Read may fail, because of
+ /// lock conflicts or other reasons.
+ /// </para>
+ ///
+ /// <para>
+ /// The first problem might occur after having called AddDirectory() on a
+ /// directory that contains a Clipper .dbf file; the file is locked by
+ /// Clipper and cannot be opened for read by another process. An example of
+ /// the second problem might occur when trying to zip a .pst file that is in
+ /// use by Microsoft Outlook. Outlook locks a range on the file, which allows
+ /// other processes to open the file, but not read it in its entirety.
+ /// </para>
+ ///
+ /// <para>
+ /// This property tells DotNetZip what you would like to do in the case of
+ /// these errors. The primary options are: <c>ZipErrorAction.Throw</c> to
+ /// throw an exception (this is the default behavior if you don't set this
+ /// property); <c>ZipErrorAction.Skip</c> to Skip the file for which there
+ /// was an error and continue saving; <c>ZipErrorAction.Retry</c> to Retry
+ /// the entry that caused the problem; or
+ /// <c>ZipErrorAction.InvokeErrorEvent</c> to invoke an event handler.
+ /// </para>
+ ///
+ /// <para>
+ /// This property is implicitly set to <c>ZipErrorAction.InvokeErrorEvent</c>
+ /// if you add a handler to the <see cref="ZipError" /> event. If you set
+ /// this property to something other than
+ /// <c>ZipErrorAction.InvokeErrorEvent</c>, then the <c>ZipError</c>
+ /// event is implicitly cleared. What it means is you can set one or the
+ /// other (or neither), depending on what you want, but you never need to set
+ /// both.
+ /// </para>
+ ///
+ /// <para>
+ /// As with some other properties on the <c>ZipFile</c> class, like <see
+ /// cref="Password"/>, <see cref="Encryption"/>, and <see
+ /// cref="CompressionLevel"/>, setting this property on a <c>ZipFile</c>
+ /// instance will cause the specified <c>ZipErrorAction</c> to be used on all
+ /// <see cref="ZipEntry"/> items that are subsequently added to the
+ /// <c>ZipFile</c> instance. If you set this property after you have added
+ /// items to the <c>ZipFile</c>, but before you have called <c>Save()</c>,
+ /// those items will not use the specified error handling action.
+ /// </para>
+ ///
+ /// <para>
+ /// If you want to handle any errors that occur with any entry in the zip
+ /// file in the same way, then set this property once, before adding any
+ /// entries to the zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// If you set this property to <c>ZipErrorAction.Skip</c> and you'd like to
+ /// learn which files may have been skipped after a <c>Save()</c>, you can
+ /// set the <see cref="StatusMessageTextWriter" /> on the ZipFile before
+ /// calling <c>Save()</c>. A message will be emitted into that writer for
+ /// each skipped file, if any.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example shows how to tell DotNetZip to skip any files for which an
+ /// error is generated during the Save().
+ /// <code lang="VB">
+ /// Public Sub SaveZipFile()
+ /// Dim SourceFolder As String = "fodder"
+ /// Dim DestFile As String = "eHandler.zip"
+ /// Dim sw as New StringWriter
+ /// Using zipArchive As ZipFile = New ZipFile
+ /// ' Tell DotNetZip to skip any files for which it encounters an error
+ /// zipArchive.ZipErrorAction = ZipErrorAction.Skip
+ /// zipArchive.StatusMessageTextWriter = sw
+ /// zipArchive.AddDirectory(SourceFolder)
+ /// zipArchive.Save(DestFile)
+ /// End Using
+ /// ' examine sw here to see any messages
+ /// End Sub
+ ///
+ /// </code>
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipEntry.ZipErrorAction"/>
+ /// <seealso cref="Ionic.Zip.ZipFile.ZipError"/>
+
+ public ZipErrorAction ZipErrorAction
+ {
+ get
+ {
+ if (ZipError != null)
+ _zipErrorAction = ZipErrorAction.InvokeErrorEvent;
+ return _zipErrorAction;
+ }
+ set
+ {
+ _zipErrorAction = value;
+ if (_zipErrorAction != ZipErrorAction.InvokeErrorEvent && ZipError != null)
+ ZipError = null;
+ }
+ }
+
+
+ /// <summary>
+ /// The Encryption to use for entries added to the <c>ZipFile</c>.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Set this when creating a zip archive, or when updating a zip archive. The
+ /// specified Encryption is applied to the entries subsequently added to the
+ /// <c>ZipFile</c> instance. Applications do not need to set the
+ /// <c>Encryption</c> property when reading or extracting a zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// If you set this to something other than EncryptionAlgorithm.None, you
+ /// will also need to set the <see cref="Password"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// As with some other properties on the <c>ZipFile</c> class, like <see
+ /// cref="Password"/> and <see cref="CompressionLevel"/>, setting this
+ /// property on a <c>ZipFile</c> instance will cause the specified
+ /// <c>EncryptionAlgorithm</c> to be used on all <see cref="ZipEntry"/> items
+ /// that are subsequently added to the <c>ZipFile</c> instance. In other
+ /// words, if you set this property after you have added items to the
+ /// <c>ZipFile</c>, but before you have called <c>Save()</c>, those items will
+ /// not be encrypted or protected with a password in the resulting zip
+ /// archive. To get a zip archive with encrypted entries, set this property,
+ /// along with the <see cref="Password"/> property, before calling
+ /// <c>AddFile</c>, <c>AddItem</c>, or <c>AddDirectory</c> (etc.) on the
+ /// <c>ZipFile</c> instance.
+ /// </para>
+ ///
+ /// <para>
+ /// If you read a <c>ZipFile</c>, you can modify the <c>Encryption</c> on an
+ /// encrypted entry, only by setting the <c>Encryption</c> property on the
+ /// <c>ZipEntry</c> itself. Setting the <c>Encryption</c> property on the
+ /// <c>ZipFile</c>, once it has been created via a call to
+ /// <c>ZipFile.Read()</c>, does not affect entries that were previously read.
+ /// </para>
+ ///
+ /// <para>
+ /// For example, suppose you read a <c>ZipFile</c>, and there is an encrypted
+ /// entry. Setting the <c>Encryption</c> property on that <c>ZipFile</c> and
+ /// then calling <c>Save()</c> on the <c>ZipFile</c> does not update the
+ /// <c>Encryption</c> used for the entries in the archive. Neither is an
+ /// exception thrown. Instead, what happens during the <c>Save()</c> is that
+ /// all previously existing entries are copied through to the new zip archive,
+ /// with whatever encryption and password that was used when originally
+ /// creating the zip archive. Upon re-reading that archive, to extract
+ /// entries, applications should use the original password or passwords, if
+ /// any.
+ /// </para>
+ ///
+ /// <para>
+ /// Suppose an application reads a <c>ZipFile</c>, and there is an encrypted
+ /// entry. Setting the <c>Encryption</c> property on that <c>ZipFile</c> and
+ /// then adding new entries (via <c>AddFile()</c>, <c>AddEntry()</c>, etc)
+ /// and then calling <c>Save()</c> on the <c>ZipFile</c> does not update the
+ /// <c>Encryption</c> on any of the entries that had previously been in the
+ /// <c>ZipFile</c>. The <c>Encryption</c> property applies only to the
+ /// newly-added entries.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// <para>
+ /// This example creates a zip archive that uses encryption, and then extracts
+ /// entries from the archive. When creating the zip archive, the ReadMe.txt
+ /// file is zipped without using a password or encryption. The other files
+ /// use encryption.
+ /// </para>
+ ///
+ /// <code>
+ /// // Create a zip archive with AES Encryption.
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// zip.AddFile("ReadMe.txt");
+ /// zip.Encryption= EncryptionAlgorithm.WinZipAes256;
+ /// zip.Password= "Top.Secret.No.Peeking!";
+ /// zip.AddFile("7440-N49th.png");
+ /// zip.AddFile("2008-Regional-Sales-Report.pdf");
+ /// zip.Save("EncryptedArchive.zip");
+ /// }
+ ///
+ /// // Extract a zip archive that uses AES Encryption.
+ /// // You do not need to specify the algorithm during extraction.
+ /// using (ZipFile zip = ZipFile.Read("EncryptedArchive.zip"))
+ /// {
+ /// zip.Password= "Top.Secret.No.Peeking!";
+ /// zip.ExtractAll("extractDirectory");
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// ' Create a zip that uses Encryption.
+ /// Using zip As New ZipFile()
+ /// zip.Encryption= EncryptionAlgorithm.WinZipAes256
+ /// zip.Password= "Top.Secret.No.Peeking!"
+ /// zip.AddFile("ReadMe.txt")
+ /// zip.AddFile("7440-N49th.png")
+ /// zip.AddFile("2008-Regional-Sales-Report.pdf")
+ /// zip.Save("EncryptedArchive.zip")
+ /// End Using
+ ///
+ /// ' Extract a zip archive that uses AES Encryption.
+ /// ' You do not need to specify the algorithm during extraction.
+ /// Using (zip as ZipFile = ZipFile.Read("EncryptedArchive.zip"))
+ /// zip.Password= "Top.Secret.No.Peeking!"
+ /// zip.ExtractAll("extractDirectory")
+ /// End Using
+ /// </code>
+ ///
+ /// </example>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.Password">ZipFile.Password</seealso>
+ /// <seealso cref="Ionic.Zip.ZipEntry.Encryption">ZipEntry.Encryption</seealso>
+ public EncryptionAlgorithm Encryption
+ {
+ get
+ {
+ return _Encryption;
+ }
+ set
+ {
+ if (value == EncryptionAlgorithm.Unsupported)
+ throw new InvalidOperationException("You may not set Encryption to that value.");
+ _Encryption = value;
+ }
+ }
+
+
+
+ /// <summary>
+ /// A callback that allows the application to specify the compression level
+ /// to use for entries subsequently added to the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// With this callback, the DotNetZip library allows the application to
+ /// determine whether compression will be used, at the time of the
+ /// <c>Save</c>. This may be useful if the application wants to favor
+ /// speed over size, and wants to defer the decision until the time of
+ /// <c>Save</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// Typically applications set the <see cref="CompressionLevel"/> property on
+ /// the <c>ZipFile</c> or on each <c>ZipEntry</c> to determine the level of
+ /// compression used. This is done at the time the entry is added to the
+ /// <c>ZipFile</c>. Setting the property to
+ /// <c>Ionic.Zlib.CompressionLevel.None</c> means no compression will be used.
+ /// </para>
+ ///
+ /// <para>
+ /// This callback allows the application to defer the decision on the
+ /// <c>CompressionLevel</c> to use, until the time of the call to
+ /// <c>ZipFile.Save()</c>. The callback is invoked once per <c>ZipEntry</c>,
+ /// at the time the data for the entry is being written out as part of a
+ /// <c>Save()</c> operation. The application can use whatever criteria it
+ /// likes in determining the level to return. For example, an application may
+ /// wish that no .mp3 files should be compressed, because they are already
+ /// compressed and the extra compression is not worth the CPU time incurred,
+ /// and so can return <c>None</c> for all .mp3 entries.
+ /// </para>
+ ///
+ /// <para>
+ /// The library determines whether compression will be attempted for an entry
+ /// this way: If the entry is a zero length file, or a directory, no
+ /// compression is used. Otherwise, if this callback is set, it is invoked
+ /// and the <c>CompressionLevel</c> is set to the return value. If this
+ /// callback has not been set, then the previously set value for
+ /// <c>CompressionLevel</c> is used.
+ /// </para>
+ ///
+ /// </remarks>
+ public SetCompressionCallback SetCompression
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// The maximum size of an output segment, when saving a split Zip file.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// Set this to a non-zero value before calling <see cref="Save()"/> or <see
+ /// cref="Save(String)"/> to specify that the ZipFile should be saved as a
+ /// split archive, also sometimes called a spanned archive. Some also
+ /// call them multi-file archives.
+ /// </para>
+ ///
+ /// <para>
+ /// A split zip archive is saved in a set of discrete filesystem files,
+ /// rather than in a single file. This is handy when transmitting the
+ /// archive in email or some other mechanism that has a limit to the size of
+ /// each file. The first file in a split archive will be named
+ /// <c>basename.z01</c>, the second will be named <c>basename.z02</c>, and
+ /// so on. The final file is named <c>basename.zip</c>. According to the zip
+ /// specification from PKWare, the minimum value is 65536, for a 64k segment
+ /// size. The maximum number of segments allows in a split archive is 99.
+ /// </para>
+ ///
+ /// <para>
+ /// The value of this property determines the maximum size of a split
+ /// segment when writing a split archive. For example, suppose you have a
+ /// <c>ZipFile</c> that would save to a single file of 200k. If you set the
+ /// <c>MaxOutputSegmentSize</c> to 65536 before calling <c>Save()</c>, you
+ /// will get four distinct output files. On the other hand if you set this
+ /// property to 256k, then you will get a single-file archive for that
+ /// <c>ZipFile</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// The size of each split output file will be as large as possible, up to
+ /// the maximum size set here. The zip specification requires that some data
+ /// fields in a zip archive may not span a split boundary, and an output
+ /// segment may be smaller than the maximum if necessary to avoid that
+ /// problem. Also, obviously the final segment of the archive may be smaller
+ /// than the maximum segment size. Segments will never be larger than the
+ /// value set with this property.
+ /// </para>
+ ///
+ /// <para>
+ /// You can save a split Zip file only when saving to a regular filesystem
+ /// file. It's not possible to save a split zip file as a self-extracting
+ /// archive, nor is it possible to save a split zip file to a stream. When
+ /// saving to a SFX or to a Stream, this property is ignored.
+ /// </para>
+ ///
+ /// <para>
+ /// About interoperability: Split or spanned zip files produced by DotNetZip
+ /// can be read by WinZip or PKZip, and vice-versa. Segmented zip files may
+ /// not be readable by other tools, if those other tools don't support zip
+ /// spanning or splitting. When in doubt, test. I don't believe Windows
+ /// Explorer can extract a split archive.
+ /// </para>
+ ///
+ /// <para>
+ /// This property has no effect when reading a split archive. You can read
+ /// a split archive in the normal way with DotNetZip.
+ /// </para>
+ ///
+ /// <para>
+ /// When saving a zip file, if you want a regular zip file rather than a
+ /// split zip file, don't set this property, or set it to Zero.
+ /// </para>
+ ///
+ /// <para>
+ /// If you read a split archive, with <see cref="ZipFile.Read(string)"/> and
+ /// then subsequently call <c>ZipFile.Save()</c>, unless you set this
+ /// property before calling <c>Save()</c>, you will get a normal,
+ /// single-file archive.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <seealso cref="NumberOfSegmentsForMostRecentSave"/>
+ public Int32 MaxOutputSegmentSize
+ {
+ get
+ {
+ return _maxOutputSegmentSize;
+ }
+ set
+ {
+ if (value < 65536 && value != 0)
+ throw new ZipException("The minimum acceptable segment size is 65536.");
+ _maxOutputSegmentSize = value;
+ }
+ }
+
+
+ /// <summary>
+ /// Returns the number of segments used in the most recent Save() operation.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// This is normally zero, unless you have set the <see
+ /// cref="MaxOutputSegmentSize"/> property. If you have set <see
+ /// cref="MaxOutputSegmentSize"/>, and then you save a file, after the call to
+ /// Save() completes, you can read this value to learn the number of segments that
+ /// were created.
+ /// </para>
+ /// <para>
+ /// If you call Save("Archive.zip"), and it creates 5 segments, then you
+ /// will have filesystem files named Archive.z01, Archive.z02, Archive.z03,
+ /// Archive.z04, and Archive.zip, and the value of this property will be 5.
+ /// </para>
+ /// </remarks>
+ /// <seealso cref="MaxOutputSegmentSize"/>
+ public Int32 NumberOfSegmentsForMostRecentSave
+ {
+ get
+ {
+ return unchecked((Int32)_numberOfSegmentsForMostRecentSave + 1);
+ }
+ }
+
+
+#if !NETCF
+ /// <summary>
+ /// The size threshold for an entry, above which a parallel deflate is used.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// DotNetZip will use multiple threads to compress any ZipEntry,
+ /// if the entry is larger than the given size. Zero means "always
+ /// use parallel deflate", while -1 means "never use parallel
+ /// deflate". The default value for this property is 512k. Aside
+ /// from the special values of 0 and 1, the minimum value is 65536.
+ /// </para>
+ ///
+ /// <para>
+ /// If the entry size cannot be known before compression, as with a
+ /// read-forward stream, then Parallel deflate will never be
+ /// performed, unless the value of this property is zero.
+ /// </para>
+ ///
+ /// <para>
+ /// A parallel deflate operations will speed up the compression of
+ /// large files, on computers with multiple CPUs or multiple CPU
+ /// cores. For files above 1mb, on a dual core or dual-cpu (2p)
+ /// machine, the time required to compress the file can be 70% of the
+ /// single-threaded deflate. For very large files on 4p machines the
+ /// compression can be done in 30% of the normal time. The downside
+ /// is that parallel deflate consumes extra memory during the deflate,
+ /// and the deflation is not as effective.
+ /// </para>
+ ///
+ /// <para>
+ /// Parallel deflate tends to yield slightly less compression when
+ /// compared to as single-threaded deflate; this is because the original
+ /// data stream is split into multiple independent buffers, each of which
+ /// is compressed in parallel. But because they are treated
+ /// independently, there is no opportunity to share compression
+ /// dictionaries. For that reason, a deflated stream may be slightly
+ /// larger when compressed using parallel deflate, as compared to a
+ /// traditional single-threaded deflate. Sometimes the increase over the
+ /// normal deflate is as much as 5% of the total compressed size. For
+ /// larger files it can be as small as 0.1%.
+ /// </para>
+ ///
+ /// <para>
+ /// Multi-threaded compression does not give as much an advantage when
+ /// using Encryption. This is primarily because encryption tends to slow
+ /// down the entire pipeline. Also, multi-threaded compression gives less
+ /// of an advantage when using lower compression levels, for example <see
+ /// cref="Ionic.Zlib.CompressionLevel.BestSpeed"/>. You may have to
+ /// perform some tests to determine the best approach for your situation.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <seealso cref="ParallelDeflateMaxBufferPairs"/>
+ ///
+ public long ParallelDeflateThreshold
+ {
+ set
+ {
+ if ((value != 0) && (value != -1) && (value < 64 * 1024))
+ throw new ArgumentOutOfRangeException("ParallelDeflateThreshold should be -1, 0, or > 65536");
+ _ParallelDeflateThreshold = value;
+ }
+ get
+ {
+ return _ParallelDeflateThreshold;
+ }
+ }
+
+ /// <summary>
+ /// The maximum number of buffer pairs to use when performing
+ /// parallel compression.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This property sets an upper limit on the number of memory
+ /// buffer pairs to create when performing parallel
+ /// compression. The implementation of the parallel
+ /// compression stream allocates multiple buffers to
+ /// facilitate parallel compression. As each buffer fills up,
+ /// the stream uses <see
+ /// cref="System.Threading.ThreadPool.QueueUserWorkItem(System.Threading.WaitCallback)">
+ /// ThreadPool.QueueUserWorkItem()</see> to compress those
+ /// buffers in a background threadpool thread. After a buffer
+ /// is compressed, it is re-ordered and written to the output
+ /// stream.
+ /// </para>
+ ///
+ /// <para>
+ /// A higher number of buffer pairs enables a higher degree of
+ /// parallelism, which tends to increase the speed of compression on
+ /// multi-cpu computers. On the other hand, a higher number of buffer
+ /// pairs also implies a larger memory consumption, more active worker
+ /// threads, and a higher cpu utilization for any compression. This
+ /// property enables the application to limit its memory consumption and
+ /// CPU utilization behavior depending on requirements.
+ /// </para>
+ ///
+ /// <para>
+ /// For each compression "task" that occurs in parallel, there are 2
+ /// buffers allocated: one for input and one for output. This property
+ /// sets a limit for the number of pairs. The total amount of storage
+ /// space allocated for buffering will then be (N*S*2), where N is the
+ /// number of buffer pairs, S is the size of each buffer (<see
+ /// cref="BufferSize"/>). By default, DotNetZip allocates 4 buffer
+ /// pairs per CPU core, so if your machine has 4 cores, and you retain
+ /// the default buffer size of 128k, then the
+ /// ParallelDeflateOutputStream will use 4 * 4 * 2 * 128kb of buffer
+ /// memory in total, or 4mb, in blocks of 128kb. If you then set this
+ /// property to 8, then the number will be 8 * 2 * 128kb of buffer
+ /// memory, or 2mb.
+ /// </para>
+ ///
+ /// <para>
+ /// CPU utilization will also go up with additional buffers, because a
+ /// larger number of buffer pairs allows a larger number of background
+ /// threads to compress in parallel. If you find that parallel
+ /// compression is consuming too much memory or CPU, you can adjust this
+ /// value downward.
+ /// </para>
+ ///
+ /// <para>
+ /// The default value is 16. Different values may deliver better or
+ /// worse results, depending on your priorities and the dynamic
+ /// performance characteristics of your storage and compute resources.
+ /// </para>
+ ///
+ /// <para>
+ /// This property is not the number of buffer pairs to use; it is an
+ /// upper limit. An illustration: Suppose you have an application that
+ /// uses the default value of this property (which is 16), and it runs
+ /// on a machine with 2 CPU cores. In that case, DotNetZip will allocate
+ /// 4 buffer pairs per CPU core, for a total of 8 pairs. The upper
+ /// limit specified by this property has no effect.
+ /// </para>
+ ///
+ /// <para>
+ /// The application can set this value at any time
+ /// before calling <c>ZipFile.Save()</c>.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <seealso cref="ParallelDeflateThreshold"/>
+ ///
+ public int ParallelDeflateMaxBufferPairs
+ {
+ get
+ {
+ return _maxBufferPairs;
+ }
+ set
+ {
+ if (value < 4)
+ throw new ArgumentOutOfRangeException("ParallelDeflateMaxBufferPairs",
+ "Value must be 4 or greater.");
+ _maxBufferPairs = value;
+ }
+ }
+#endif
+
+
+ /// <summary>Provides a string representation of the instance.</summary>
+ /// <returns>a string representation of the instance.</returns>
+ public override String ToString()
+ {
+ return String.Format("ZipFile::{0}", Name);
+ }
+
+
+ /// <summary>
+ /// Returns the version number on the DotNetZip assembly.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This property is exposed as a convenience. Callers could also get the
+ /// version value by retrieving GetName().Version on the
+ /// System.Reflection.Assembly object pointing to the DotNetZip
+ /// assembly. But sometimes it is not clear which assembly is being loaded.
+ /// This property makes it clear.
+ /// </para>
+ /// <para>
+ /// This static property is primarily useful for diagnostic purposes.
+ /// </para>
+ /// </remarks>
+ internal static System.Version LibraryVersion
+ {
+ get
+ {
+ return System.Reflection.Assembly.GetExecutingAssembly().GetName().Version;
+ }
+ }
+
+ internal void NotifyEntryChanged()
+ {
+ _contentsChanged = true;
+ }
+
+
+ internal Stream StreamForDiskNumber(uint diskNumber)
+ {
+ if (diskNumber + 1 == this._diskNumberWithCd ||
+ (diskNumber == 0 && this._diskNumberWithCd == 0))
+ {
+ //return (this.ReadStream as FileStream);
+ return this.ReadStream;
+ }
+ return ZipSegmentedStream.ForReading(this._readName ?? this._name,
+ diskNumber, _diskNumberWithCd);
+ }
+
+
+
+ // called by ZipEntry in ZipEntry.Extract(), when there is no stream set for the
+ // ZipEntry.
+ internal void Reset(bool whileSaving)
+ {
+ if (_JustSaved)
+ {
+ // read in the just-saved zip archive
+ using (ZipFile x = new ZipFile())
+ {
+ // workitem 10735
+ x._readName = x._name = whileSaving
+ ? (this._readName ?? this._name)
+ : this._name;
+ x.AlternateEncoding = this.AlternateEncoding;
+ x.AlternateEncodingUsage = this.AlternateEncodingUsage;
+ ReadIntoInstance(x);
+ // copy the contents of the entries.
+ // cannot just replace the entries - the app may be holding them
+ foreach (ZipEntry e1 in x)
+ {
+ foreach (ZipEntry e2 in this)
+ {
+ if (e1.FileName == e2.FileName)
+ {
+ e2.CopyMetaData(e1);
+ break;
+ }
+ }
+ }
+ }
+ _JustSaved = false;
+ }
+ }
+
+
+ #endregion
+
+ #region Constructors
+
+ /// <summary>
+ /// Creates a new <c>ZipFile</c> instance, using the specified filename.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Applications can use this constructor to create a new ZipFile for writing,
+ /// or to slurp in an existing zip archive for read and update purposes.
+ /// </para>
+ ///
+ /// <para>
+ /// To create a new zip archive, an application can call this constructor,
+ /// passing the name of a file that does not exist. The name may be a fully
+ /// qualified path. Then the application can add directories or files to the
+ /// <c>ZipFile</c> via <c>AddDirectory()</c>, <c>AddFile()</c>, <c>AddItem()</c>
+ /// and then write the zip archive to the disk by calling <c>Save()</c>. The
+ /// zip file is not actually opened and written to the disk until the
+ /// application calls <c>ZipFile.Save()</c>. At that point the new zip file
+ /// with the given name is created.
+ /// </para>
+ ///
+ /// <para>
+ /// If you won't know the name of the <c>Zipfile</c> until the time you call
+ /// <c>ZipFile.Save()</c>, or if you plan to save to a stream (which has no
+ /// name), then you should use the no-argument constructor.
+ /// </para>
+ ///
+ /// <para>
+ /// The application can also call this constructor to read an existing zip
+ /// archive. passing the name of a valid zip file that does exist. But, it's
+ /// better form to use the static <see cref="ZipFile.Read(String)"/> method,
+ /// passing the name of the zip file, because using <c>ZipFile.Read()</c> in
+ /// your code communicates very clearly what you are doing. In either case,
+ /// the file is then read into the <c>ZipFile</c> instance. The app can then
+ /// enumerate the entries or can modify the zip file, for example adding
+ /// entries, removing entries, changing comments, and so on.
+ /// </para>
+ ///
+ /// <para>
+ /// One advantage to this parameterized constructor: it allows applications to
+ /// use the same code to add items to a zip archive, regardless of whether the
+ /// zip file exists.
+ /// </para>
+ ///
+ /// <para>
+ /// Instances of the <c>ZipFile</c> class are not multi-thread safe. You may
+ /// not party on a single instance with multiple threads. You may have
+ /// multiple threads that each use a distinct <c>ZipFile</c> instance, or you
+ /// can synchronize multi-thread access to a single instance.
+ /// </para>
+ ///
+ /// <para>
+ /// By the way, since DotNetZip is so easy to use, don't you think <see
+ /// href="http://cheeso.members.winisp.net/DotNetZipDonate.aspx">you should
+ /// donate $5 or $10</see>?
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <exception cref="Ionic.Zip.ZipException">
+ /// Thrown if name refers to an existing file that is not a valid zip file.
+ /// </exception>
+ ///
+ /// <example>
+ /// This example shows how to create a zipfile, and add a few files into it.
+ /// <code>
+ /// String ZipFileToCreate = "archive1.zip";
+ /// String DirectoryToZip = "c:\\reports";
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// // Store all files found in the top level directory, into the zip archive.
+ /// String[] filenames = System.IO.Directory.GetFiles(DirectoryToZip);
+ /// zip.AddFiles(filenames, "files");
+ /// zip.Save(ZipFileToCreate);
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Dim ZipFileToCreate As String = "archive1.zip"
+ /// Dim DirectoryToZip As String = "c:\reports"
+ /// Using zip As ZipFile = New ZipFile()
+ /// Dim filenames As String() = System.IO.Directory.GetFiles(DirectoryToZip)
+ /// zip.AddFiles(filenames, "files")
+ /// zip.Save(ZipFileToCreate)
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="fileName">The filename to use for the new zip archive.</param>
+ ///
+ public ZipFile(string fileName)
+ {
+ try
+ {
+ _InitInstance(fileName, null);
+ }
+ catch (Exception e1)
+ {
+ throw new ZipException(String.Format("Could not read {0} as a zip file", fileName), e1);
+ }
+ }
+
+
+ /// <summary>
+ /// Creates a new <c>ZipFile</c> instance, using the specified name for the
+ /// filename, and the specified Encoding.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// See the documentation on the <see cref="ZipFile(String)">ZipFile
+ /// constructor that accepts a single string argument</see> for basic
+ /// information on all the <c>ZipFile</c> constructors.
+ /// </para>
+ ///
+ /// <para>
+ /// The Encoding is used as the default alternate encoding for entries with
+ /// filenames or comments that cannot be encoded with the IBM437 code page.
+ /// This is equivalent to setting the <see
+ /// cref="ProvisionalAlternateEncoding"/> property on the <c>ZipFile</c>
+ /// instance after construction.
+ /// </para>
+ ///
+ /// <para>
+ /// Instances of the <c>ZipFile</c> class are not multi-thread safe. You may
+ /// not party on a single instance with multiple threads. You may have
+ /// multiple threads that each use a distinct <c>ZipFile</c> instance, or you
+ /// can synchronize multi-thread access to a single instance.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <exception cref="Ionic.Zip.ZipException">
+ /// Thrown if name refers to an existing file that is not a valid zip file.
+ /// </exception>
+ ///
+ /// <param name="fileName">The filename to use for the new zip archive.</param>
+ /// <param name="encoding">The Encoding is used as the default alternate
+ /// encoding for entries with filenames or comments that cannot be encoded
+ /// with the IBM437 code page. </param>
+ public ZipFile(string fileName, System.Text.Encoding encoding)
+ {
+ try
+ {
+ AlternateEncoding = encoding;
+ AlternateEncodingUsage = ZipOption.Always;
+ _InitInstance(fileName, null);
+ }
+ catch (Exception e1)
+ {
+ throw new ZipException(String.Format("{0} is not a valid zip file", fileName), e1);
+ }
+ }
+
+
+
+ /// <summary>
+ /// Create a zip file, without specifying a target filename or stream to save to.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// See the documentation on the <see cref="ZipFile(String)">ZipFile
+ /// constructor that accepts a single string argument</see> for basic
+ /// information on all the <c>ZipFile</c> constructors.
+ /// </para>
+ ///
+ /// <para>
+ /// After instantiating with this constructor and adding entries to the
+ /// archive, the application should call <see cref="ZipFile.Save(String)"/> or
+ /// <see cref="ZipFile.Save(System.IO.Stream)"/> to save to a file or a
+ /// stream, respectively. The application can also set the <see cref="Name"/>
+ /// property and then call the no-argument <see cref="Save()"/> method. (This
+ /// is the preferred approach for applications that use the library through
+ /// COM interop.) If you call the no-argument <see cref="Save()"/> method
+ /// without having set the <c>Name</c> of the <c>ZipFile</c>, either through
+ /// the parameterized constructor or through the explicit property , the
+ /// Save() will throw, because there is no place to save the file. </para>
+ ///
+ /// <para>
+ /// Instances of the <c>ZipFile</c> class are not multi-thread safe. You may
+ /// have multiple threads that each use a distinct <c>ZipFile</c> instance, or
+ /// you can synchronize multi-thread access to a single instance. </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example creates a Zip archive called Backup.zip, containing all the files
+ /// in the directory DirectoryToZip. Files within subdirectories are not zipped up.
+ /// <code>
+ /// using (ZipFile zip = new ZipFile())
+ /// {
+ /// // Store all files found in the top level directory, into the zip archive.
+ /// // note: this code does not recurse subdirectories!
+ /// String[] filenames = System.IO.Directory.GetFiles(DirectoryToZip);
+ /// zip.AddFiles(filenames, "files");
+ /// zip.Save("Backup.zip");
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As New ZipFile
+ /// ' Store all files found in the top level directory, into the zip archive.
+ /// ' note: this code does not recurse subdirectories!
+ /// Dim filenames As String() = System.IO.Directory.GetFiles(DirectoryToZip)
+ /// zip.AddFiles(filenames, "files")
+ /// zip.Save("Backup.zip")
+ /// End Using
+ /// </code>
+ /// </example>
+ public ZipFile()
+ {
+ _InitInstance(null, null);
+ }
+
+
+ /// <summary>
+ /// Create a zip file, specifying a text Encoding, but without specifying a
+ /// target filename or stream to save to.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// See the documentation on the <see cref="ZipFile(String)">ZipFile
+ /// constructor that accepts a single string argument</see> for basic
+ /// information on all the <c>ZipFile</c> constructors.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="encoding">
+ /// The Encoding is used as the default alternate encoding for entries with
+ /// filenames or comments that cannot be encoded with the IBM437 code page.
+ /// </param>
+ public ZipFile(System.Text.Encoding encoding)
+ {
+ AlternateEncoding = encoding;
+ AlternateEncodingUsage = ZipOption.Always;
+ _InitInstance(null, null);
+ }
+
+
+ /// <summary>
+ /// Creates a new <c>ZipFile</c> instance, using the specified name for the
+ /// filename, and the specified status message writer.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// See the documentation on the <see cref="ZipFile(String)">ZipFile
+ /// constructor that accepts a single string argument</see> for basic
+ /// information on all the <c>ZipFile</c> constructors.
+ /// </para>
+ ///
+ /// <para>
+ /// This version of the constructor allows the caller to pass in a TextWriter,
+ /// to which verbose messages will be written during extraction or creation of
+ /// the zip archive. A console application may wish to pass
+ /// System.Console.Out to get messages on the Console. A graphical or headless
+ /// application may wish to capture the messages in a different
+ /// <c>TextWriter</c>, for example, a <c>StringWriter</c>, and then display
+ /// the messages in a TextBox, or generate an audit log of ZipFile operations.
+ /// </para>
+ ///
+ /// <para>
+ /// To encrypt the data for the files added to the <c>ZipFile</c> instance,
+ /// set the Password property after creating the <c>ZipFile</c> instance.
+ /// </para>
+ ///
+ /// <para>
+ /// Instances of the <c>ZipFile</c> class are not multi-thread safe. You may
+ /// not party on a single instance with multiple threads. You may have
+ /// multiple threads that each use a distinct <c>ZipFile</c> instance, or you
+ /// can synchronize multi-thread access to a single instance.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <exception cref="Ionic.Zip.ZipException">
+ /// Thrown if name refers to an existing file that is not a valid zip file.
+ /// </exception>
+ ///
+ /// <example>
+ /// <code>
+ /// using (ZipFile zip = new ZipFile("Backup.zip", Console.Out))
+ /// {
+ /// // Store all files found in the top level directory, into the zip archive.
+ /// // note: this code does not recurse subdirectories!
+ /// // Status messages will be written to Console.Out
+ /// String[] filenames = System.IO.Directory.GetFiles(DirectoryToZip);
+ /// zip.AddFiles(filenames);
+ /// zip.Save();
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As New ZipFile("Backup.zip", Console.Out)
+ /// ' Store all files found in the top level directory, into the zip archive.
+ /// ' note: this code does not recurse subdirectories!
+ /// ' Status messages will be written to Console.Out
+ /// Dim filenames As String() = System.IO.Directory.GetFiles(DirectoryToZip)
+ /// zip.AddFiles(filenames)
+ /// zip.Save()
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="fileName">The filename to use for the new zip archive.</param>
+ /// <param name="statusMessageWriter">A TextWriter to use for writing
+ /// verbose status messages.</param>
+ public ZipFile(string fileName, TextWriter statusMessageWriter)
+ {
+ try
+ {
+ _InitInstance(fileName, statusMessageWriter);
+ }
+ catch (Exception e1)
+ {
+ throw new ZipException(String.Format("{0} is not a valid zip file", fileName), e1);
+ }
+ }
+
+
+ /// <summary>
+ /// Creates a new <c>ZipFile</c> instance, using the specified name for the
+ /// filename, the specified status message writer, and the specified Encoding.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This constructor works like the <see cref="ZipFile(String)">ZipFile
+ /// constructor that accepts a single string argument.</see> See that
+ /// reference for detail on what this constructor does.
+ /// </para>
+ ///
+ /// <para>
+ /// This version of the constructor allows the caller to pass in a
+ /// <c>TextWriter</c>, and an Encoding. The <c>TextWriter</c> will collect
+ /// verbose messages that are generated by the library during extraction or
+ /// creation of the zip archive. A console application may wish to pass
+ /// <c>System.Console.Out</c> to get messages on the Console. A graphical or
+ /// headless application may wish to capture the messages in a different
+ /// <c>TextWriter</c>, for example, a <c>StringWriter</c>, and then display
+ /// the messages in a <c>TextBox</c>, or generate an audit log of
+ /// <c>ZipFile</c> operations.
+ /// </para>
+ ///
+ /// <para>
+ /// The <c>Encoding</c> is used as the default alternate encoding for entries
+ /// with filenames or comments that cannot be encoded with the IBM437 code
+ /// page. This is a equivalent to setting the <see
+ /// cref="ProvisionalAlternateEncoding"/> property on the <c>ZipFile</c>
+ /// instance after construction.
+ /// </para>
+ ///
+ /// <para>
+ /// To encrypt the data for the files added to the <c>ZipFile</c> instance,
+ /// set the <c>Password</c> property after creating the <c>ZipFile</c>
+ /// instance.
+ /// </para>
+ ///
+ /// <para>
+ /// Instances of the <c>ZipFile</c> class are not multi-thread safe. You may
+ /// not party on a single instance with multiple threads. You may have
+ /// multiple threads that each use a distinct <c>ZipFile</c> instance, or you
+ /// can synchronize multi-thread access to a single instance.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <exception cref="Ionic.Zip.ZipException">
+ /// Thrown if <c>fileName</c> refers to an existing file that is not a valid zip file.
+ /// </exception>
+ ///
+ /// <param name="fileName">The filename to use for the new zip archive.</param>
+ /// <param name="statusMessageWriter">A TextWriter to use for writing verbose
+ /// status messages.</param>
+ /// <param name="encoding">
+ /// The Encoding is used as the default alternate encoding for entries with
+ /// filenames or comments that cannot be encoded with the IBM437 code page.
+ /// </param>
+ public ZipFile(string fileName, TextWriter statusMessageWriter,
+ System.Text.Encoding encoding)
+ {
+ try
+ {
+ AlternateEncoding = encoding;
+ AlternateEncodingUsage = ZipOption.Always;
+ _InitInstance(fileName, statusMessageWriter);
+ }
+ catch (Exception e1)
+ {
+ throw new ZipException(String.Format("{0} is not a valid zip file", fileName), e1);
+ }
+ }
+
+
+
+
+ /// <summary>
+ /// Initialize a <c>ZipFile</c> instance by reading in a zip file.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This method is primarily useful from COM Automation environments, when
+ /// reading or extracting zip files. In COM, it is not possible to invoke
+ /// parameterized constructors for a class. A COM Automation application can
+ /// update a zip file by using the <see cref="ZipFile()">default (no argument)
+ /// constructor</see>, then calling <c>Initialize()</c> to read the contents
+ /// of an on-disk zip archive into the <c>ZipFile</c> instance.
+ /// </para>
+ ///
+ /// <para>
+ /// .NET applications are encouraged to use the <c>ZipFile.Read()</c> methods
+ /// for better clarity.
+ /// </para>
+ ///
+ /// </remarks>
+ /// <param name="fileName">the name of the existing zip file to read in.</param>
+ public void Initialize(string fileName)
+ {
+ try
+ {
+ _InitInstance(fileName, null);
+ }
+ catch (Exception e1)
+ {
+ throw new ZipException(String.Format("{0} is not a valid zip file", fileName), e1);
+ }
+ }
+
+ #region Xamarin
+
+ public ZipFile(Stream readStream, Stream writeStream, bool leaveStreamOpen,
+ System.Text.Encoding encoding)
+ {
+ ReadStream = readStream;
+ WriteStream = writeStream;
+ AlternateEncoding = encoding;
+
+ // workitem 7685, 9868
+ _initEntriesDictionary();
+ }
+
+ public void ReadToInstance()
+ {
+ if (FullScan)
+ ReadIntoInstance_Orig(this);
+ else
+ ReadIntoInstance(this);
+ }
+
+ #endregion
+
+ private void _initEntriesDictionary()
+ {
+ // workitem 9868
+ StringComparer sc = (CaseSensitiveRetrieval) ? StringComparer.Ordinal : StringComparer.OrdinalIgnoreCase;
+ _entries = (_entries == null)
+ ? new Dictionary<String, ZipEntry>(sc)
+ : new Dictionary<String, ZipEntry>(_entries, sc);
+ }
+
+
+ private void _InitInstance(string zipFileName, TextWriter statusMessageWriter)
+ {
+ // create a new zipfile
+ _name = zipFileName;
+ _StatusMessageTextWriter = statusMessageWriter;
+ _contentsChanged = true;
+ AddDirectoryWillTraverseReparsePoints = true; // workitem 8617
+ CompressionLevel = Ionic.Zlib.CompressionLevel.Default;
+#if !NETCF
+ ParallelDeflateThreshold = 512 * 1024;
+#endif
+ // workitem 7685, 9868
+ _initEntriesDictionary();
+
+ if (File.Exists(_name))
+ {
+ if (FullScan)
+ ReadIntoInstance_Orig(this);
+ else
+ ReadIntoInstance(this);
+ this._fileAlreadyExists = true;
+ }
+
+ return;
+ }
+ #endregion
+
+
+
+ #region Indexers and Collections
+
+ private List<ZipEntry> ZipEntriesAsList
+ {
+ get
+ {
+ if (_zipEntriesAsList == null)
+ _zipEntriesAsList = new List<ZipEntry>(_entries.Values);
+ return _zipEntriesAsList;
+ }
+ }
+
+ /// <summary>
+ /// This is an integer indexer into the Zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This property is read-only.
+ /// </para>
+ ///
+ /// <para>
+ /// Internally, the <c>ZipEntry</c> instances that belong to the
+ /// <c>ZipFile</c> are stored in a Dictionary. When you use this
+ /// indexer the first time, it creates a read-only
+ /// <c>List<ZipEntry></c> from the Dictionary.Values Collection.
+ /// If at any time you modify the set of entries in the <c>ZipFile</c>,
+ /// either by adding an entry, removing an entry, or renaming an
+ /// entry, a new List will be created, and the numeric indexes for the
+ /// remaining entries may be different.
+ /// </para>
+ ///
+ /// <para>
+ /// This means you cannot rename any ZipEntry from
+ /// inside an enumeration of the zip file.
+ /// </para>
+ ///
+ /// <param name="ix">
+ /// The index value.
+ /// </param>
+ ///
+ /// </remarks>
+ ///
+ /// <returns>
+ /// The <c>ZipEntry</c> within the Zip archive at the specified index. If the
+ /// entry does not exist in the archive, this indexer throws.
+ /// </returns>
+ ///
+ public ZipEntry this[int ix]
+ {
+ // workitem 6402
+ get
+ {
+ return ZipEntriesAsList[ix];
+ }
+ }
+
+
+ /// <summary>
+ /// This is a name-based indexer into the Zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This property is read-only.
+ /// </para>
+ ///
+ /// <para>
+ /// The <see cref="CaseSensitiveRetrieval"/> property on the <c>ZipFile</c>
+ /// determines whether retrieval via this indexer is done via case-sensitive
+ /// comparisons. By default, retrieval is not case sensitive. This makes
+ /// sense on Windows, in which filesystems are not case sensitive.
+ /// </para>
+ ///
+ /// <para>
+ /// Regardless of case-sensitivity, it is not always the case that
+ /// <c>this[value].FileName == value</c>. In other words, the <c>FileName</c>
+ /// property of the <c>ZipEntry</c> retrieved with this indexer, may or may
+ /// not be equal to the index value.
+ /// </para>
+ ///
+ /// <para>
+ /// This is because DotNetZip performs a normalization of filenames passed to
+ /// this indexer, before attempting to retrieve the item. That normalization
+ /// includes: removal of a volume letter and colon, swapping backward slashes
+ /// for forward slashes. So, <c>zip["dir1\\entry1.txt"].FileName ==
+ /// "dir1/entry.txt"</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// Directory entries in the zip file may be retrieved via this indexer only
+ /// with names that have a trailing slash. DotNetZip automatically appends a
+ /// trailing slash to the names of any directory entries added to a zip.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example extracts only the entries in a zip file that are .txt files.
+ /// <code>
+ /// using (ZipFile zip = ZipFile.Read("PackedDocuments.zip"))
+ /// {
+ /// foreach (string s1 in zip.EntryFilenames)
+ /// {
+ /// if (s1.EndsWith(".txt"))
+ /// zip[s1].Extract("textfiles");
+ /// }
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using zip As ZipFile = ZipFile.Read("PackedDocuments.zip")
+ /// Dim s1 As String
+ /// For Each s1 In zip.EntryFilenames
+ /// If s1.EndsWith(".txt") Then
+ /// zip(s1).Extract("textfiles")
+ /// End If
+ /// Next
+ /// End Using
+ /// </code>
+ /// </example>
+ /// <seealso cref="Ionic.Zip.ZipFile.RemoveEntry(string)"/>
+ ///
+ /// <exception cref="System.ArgumentException">
+ /// Thrown if the caller attempts to assign a non-null value to the indexer.
+ /// </exception>
+ ///
+ /// <param name="fileName">
+ /// The name of the file, including any directory path, to retrieve from the
+ /// zip. The filename match is not case-sensitive by default; you can use the
+ /// <see cref="CaseSensitiveRetrieval"/> property to change this behavior. The
+ /// pathname can use forward-slashes or backward slashes.
+ /// </param>
+ ///
+ /// <returns>
+ /// The <c>ZipEntry</c> within the Zip archive, given by the specified
+ /// filename. If the named entry does not exist in the archive, this indexer
+ /// returns <c>null</c> (<c>Nothing</c> in VB).
+ /// </returns>
+ ///
+ public ZipEntry this[String fileName]
+ {
+ get
+ {
+ var key = SharedUtilities.NormalizePathForUseInZipFile(fileName);
+ if (_entries.ContainsKey(key))
+ return _entries[key];
+ // workitem 11056
+ key = key.Replace("/", "\\");
+ if (_entries.ContainsKey(key))
+ return _entries[key];
+ return null;
+
+#if MESSY
+ foreach (ZipEntry e in _entries.Values)
+ {
+ if (this.CaseSensitiveRetrieval)
+ {
+ // check for the file match with a case-sensitive comparison.
+ if (e.FileName == fileName) return e;
+ // also check for equivalence
+ if (fileName.Replace("\\", "/") == e.FileName) return e;
+ if (e.FileName.Replace("\\", "/") == fileName) return e;
+
+ // check for a difference only in trailing slash
+ if (e.FileName.EndsWith("/"))
+ {
+ var fileNameNoSlash = e.FileName.Trim("/".ToCharArray());
+ if (fileNameNoSlash == fileName) return e;
+ // also check for equivalence
+ if (fileName.Replace("\\", "/") == fileNameNoSlash) return e;
+ if (fileNameNoSlash.Replace("\\", "/") == fileName) return e;
+ }
+
+ }
+ else
+ {
+ // check for the file match in a case-insensitive manner.
+ if (String.Compare(e.FileName, fileName, StringComparison.CurrentCultureIgnoreCase) == 0) return e;
+ // also check for equivalence
+ if (String.Compare(fileName.Replace("\\", "/"), e.FileName, StringComparison.CurrentCultureIgnoreCase) == 0) return e;
+ if (String.Compare(e.FileName.Replace("\\", "/"), fileName, StringComparison.CurrentCultureIgnoreCase) == 0) return e;
+
+ // check for a difference only in trailing slash
+ if (e.FileName.EndsWith("/"))
+ {
+ var fileNameNoSlash = e.FileName.Trim("/".ToCharArray());
+
+ if (String.Compare(fileNameNoSlash, fileName, StringComparison.CurrentCultureIgnoreCase) == 0) return e;
+ // also check for equivalence
+ if (String.Compare(fileName.Replace("\\", "/"), fileNameNoSlash, StringComparison.CurrentCultureIgnoreCase) == 0) return e;
+ if (String.Compare(fileNameNoSlash.Replace("\\", "/"), fileName, StringComparison.CurrentCultureIgnoreCase) == 0) return e;
+
+ }
+
+ }
+
+ }
+ return null;
+
+#endif
+ }
+ }
+
+
+ /// <summary>
+ /// The list of filenames for the entries contained within the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// According to the ZIP specification, the names of the entries use forward
+ /// slashes in pathnames. If you are scanning through the list, you may have
+ /// to swap forward slashes for backslashes.
+ /// </remarks>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.this[string]"/>
+ ///
+ /// <example>
+ /// This example shows one way to test if a filename is already contained
+ /// within a zip archive.
+ /// <code>
+ /// String zipFileToRead= "PackedDocuments.zip";
+ /// string candidate = "DatedMaterial.xps";
+ /// using (ZipFile zip = new ZipFile(zipFileToRead))
+ /// {
+ /// if (zip.EntryFilenames.Contains(candidate))
+ /// Console.WriteLine("The file '{0}' exists in the zip archive '{1}'",
+ /// candidate,
+ /// zipFileName);
+ /// else
+ /// Console.WriteLine("The file, '{0}', does not exist in the zip archive '{1}'",
+ /// candidate,
+ /// zipFileName);
+ /// Console.WriteLine();
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Dim zipFileToRead As String = "PackedDocuments.zip"
+ /// Dim candidate As String = "DatedMaterial.xps"
+ /// Using zip As ZipFile.Read(ZipFileToRead)
+ /// If zip.EntryFilenames.Contains(candidate) Then
+ /// Console.WriteLine("The file '{0}' exists in the zip archive '{1}'", _
+ /// candidate, _
+ /// zipFileName)
+ /// Else
+ /// Console.WriteLine("The file, '{0}', does not exist in the zip archive '{1}'", _
+ /// candidate, _
+ /// zipFileName)
+ /// End If
+ /// Console.WriteLine
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <returns>
+ /// The list of strings for the filenames contained within the Zip archive.
+ /// </returns>
+ ///
+ public System.Collections.Generic.ICollection<String> EntryFileNames
+ {
+ get
+ {
+ return _entries.Keys;
+ }
+ }
+
+
+ /// <summary>
+ /// Returns the readonly collection of entries in the Zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// If there are no entries in the current <c>ZipFile</c>, the value returned is a
+ /// non-null zero-element collection. If there are entries in the zip file,
+ /// the elements are returned in no particular order.
+ /// </para>
+ /// <para>
+ /// This is the implied enumerator on the <c>ZipFile</c> class. If you use a
+ /// <c>ZipFile</c> instance in a context that expects an enumerator, you will
+ /// get this collection.
+ /// </para>
+ /// </remarks>
+ /// <seealso cref="EntriesSorted"/>
+ public System.Collections.Generic.ICollection<ZipEntry> Entries
+ {
+ get
+ {
+ return _entries.Values;
+ }
+ }
+
+
+ /// <summary>
+ /// Returns a readonly collection of entries in the Zip archive, sorted by FileName.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// If there are no entries in the current <c>ZipFile</c>, the value returned
+ /// is a non-null zero-element collection. If there are entries in the zip
+ /// file, the elements are returned sorted by the name of the entry.
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example fills a Windows Forms ListView with the entries in a zip file.
+ ///
+ /// <code lang="C#">
+ /// using (ZipFile zip = ZipFile.Read(zipFile))
+ /// {
+ /// foreach (ZipEntry entry in zip.EntriesSorted)
+ /// {
+ /// ListViewItem item = new ListViewItem(n.ToString());
+ /// n++;
+ /// string[] subitems = new string[] {
+ /// entry.FileName.Replace("/","\\"),
+ /// entry.LastModified.ToString("yyyy-MM-dd HH:mm:ss"),
+ /// entry.UncompressedSize.ToString(),
+ /// String.Format("{0,5:F0}%", entry.CompressionRatio),
+ /// entry.CompressedSize.ToString(),
+ /// (entry.UsesEncryption) ? "Y" : "N",
+ /// String.Format("{0:X8}", entry.Crc)};
+ ///
+ /// foreach (String s in subitems)
+ /// {
+ /// ListViewItem.ListViewSubItem subitem = new ListViewItem.ListViewSubItem();
+ /// subitem.Text = s;
+ /// item.SubItems.Add(subitem);
+ /// }
+ ///
+ /// this.listView1.Items.Add(item);
+ /// }
+ /// }
+ /// </code>
+ /// </example>
+ ///
+ /// <seealso cref="Entries"/>
+ public System.Collections.Generic.ICollection<ZipEntry> EntriesSorted
+ {
+ get
+ {
+ var coll = new System.Collections.Generic.List<ZipEntry>();
+ foreach (var e in this.Entries)
+ {
+ coll.Add(e);
+ }
+ StringComparison sc = (CaseSensitiveRetrieval) ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase;
+
+ coll.Sort((x, y) => { return String.Compare(x.FileName, y.FileName, sc); });
+ return coll.AsReadOnly();
+ }
+ }
+
+
+ /// <summary>
+ /// Returns the number of entries in the Zip archive.
+ /// </summary>
+ public int Count
+ {
+ get
+ {
+ return _entries.Count;
+ }
+ }
+
+
+
+ /// <summary>
+ /// Removes the given <c>ZipEntry</c> from the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// After calling <c>RemoveEntry</c>, the application must call <c>Save</c> to
+ /// make the changes permanent.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <exception cref="System.ArgumentException">
+ /// Thrown if the specified <c>ZipEntry</c> does not exist in the <c>ZipFile</c>.
+ /// </exception>
+ ///
+ /// <example>
+ /// In this example, all entries in the zip archive dating from before
+ /// December 31st, 2007, are removed from the archive. This is actually much
+ /// easier if you use the RemoveSelectedEntries method. But I needed an
+ /// example for RemoveEntry, so here it is.
+ /// <code>
+ /// String ZipFileToRead = "ArchiveToModify.zip";
+ /// System.DateTime Threshold = new System.DateTime(2007,12,31);
+ /// using (ZipFile zip = ZipFile.Read(ZipFileToRead))
+ /// {
+ /// var EntriesToRemove = new System.Collections.Generic.List<ZipEntry>();
+ /// foreach (ZipEntry e in zip)
+ /// {
+ /// if (e.LastModified < Threshold)
+ /// {
+ /// // We cannot remove the entry from the list, within the context of
+ /// // an enumeration of said list.
+ /// // So we add the doomed entry to a list to be removed later.
+ /// EntriesToRemove.Add(e);
+ /// }
+ /// }
+ ///
+ /// // actually remove the doomed entries.
+ /// foreach (ZipEntry zombie in EntriesToRemove)
+ /// zip.RemoveEntry(zombie);
+ ///
+ /// zip.Comment= String.Format("This zip archive was updated at {0}.",
+ /// System.DateTime.Now.ToString("G"));
+ ///
+ /// // save with a different name
+ /// zip.Save("Archive-Updated.zip");
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Dim ZipFileToRead As String = "ArchiveToModify.zip"
+ /// Dim Threshold As New DateTime(2007, 12, 31)
+ /// Using zip As ZipFile = ZipFile.Read(ZipFileToRead)
+ /// Dim EntriesToRemove As New System.Collections.Generic.List(Of ZipEntry)
+ /// Dim e As ZipEntry
+ /// For Each e In zip
+ /// If (e.LastModified < Threshold) Then
+ /// ' We cannot remove the entry from the list, within the context of
+ /// ' an enumeration of said list.
+ /// ' So we add the doomed entry to a list to be removed later.
+ /// EntriesToRemove.Add(e)
+ /// End If
+ /// Next
+ ///
+ /// ' actually remove the doomed entries.
+ /// Dim zombie As ZipEntry
+ /// For Each zombie In EntriesToRemove
+ /// zip.RemoveEntry(zombie)
+ /// Next
+ /// zip.Comment = String.Format("This zip archive was updated at {0}.", DateTime.Now.ToString("G"))
+ /// 'save as a different name
+ /// zip.Save("Archive-Updated.zip")
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="entry">
+ /// The <c>ZipEntry</c> to remove from the zip.
+ /// </param>
+ ///
+ /// <seealso cref="Ionic.Zip.ZipFile.RemoveSelectedEntries(string)"/>
+ ///
+ public void RemoveEntry(ZipEntry entry)
+ {
+ //if (!_entries.Values.Contains(entry))
+ // throw new ArgumentException("The entry you specified does not exist in the zip archive.");
+ if (entry == null)
+ throw new ArgumentNullException("entry");
+
+ _entries.Remove(SharedUtilities.NormalizePathForUseInZipFile(entry.FileName));
+ _zipEntriesAsList = null;
+
+#if NOTNEEDED
+ if (_direntries != null)
+ {
+ bool FoundAndRemovedDirEntry = false;
+ foreach (ZipDirEntry de1 in _direntries)
+ {
+ if (entry.FileName == de1.FileName)
+ {
+ _direntries.Remove(de1);
+ FoundAndRemovedDirEntry = true;
+ break;
+ }
+ }
+
+ if (!FoundAndRemovedDirEntry)
+ throw new BadStateException("The entry to be removed was not found in the directory.");
+ }
+#endif
+ _contentsChanged = true;
+ }
+
+
+
+
+ /// <summary>
+ /// Removes the <c>ZipEntry</c> with the given filename from the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// After calling <c>RemoveEntry</c>, the application must call <c>Save</c> to
+ /// make the changes permanent.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <exception cref="System.InvalidOperationException">
+ /// Thrown if the <c>ZipFile</c> is not updatable.
+ /// </exception>
+ ///
+ /// <exception cref="System.ArgumentException">
+ /// Thrown if a <c>ZipEntry</c> with the specified filename does not exist in
+ /// the <c>ZipFile</c>.
+ /// </exception>
+ ///
+ /// <example>
+ ///
+ /// This example shows one way to remove an entry with a given filename from
+ /// an existing zip archive.
+ ///
+ /// <code>
+ /// String zipFileToRead= "PackedDocuments.zip";
+ /// string candidate = "DatedMaterial.xps";
+ /// using (ZipFile zip = ZipFile.Read(zipFileToRead))
+ /// {
+ /// if (zip.EntryFilenames.Contains(candidate))
+ /// {
+ /// zip.RemoveEntry(candidate);
+ /// zip.Comment= String.Format("The file '{0}' has been removed from this archive.",
+ /// Candidate);
+ /// zip.Save();
+ /// }
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Dim zipFileToRead As String = "PackedDocuments.zip"
+ /// Dim candidate As String = "DatedMaterial.xps"
+ /// Using zip As ZipFile = ZipFile.Read(zipFileToRead)
+ /// If zip.EntryFilenames.Contains(candidate) Then
+ /// zip.RemoveEntry(candidate)
+ /// zip.Comment = String.Format("The file '{0}' has been removed from this archive.", Candidate)
+ /// zip.Save
+ /// End If
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="fileName">
+ /// The name of the file, including any directory path, to remove from the zip.
+ /// The filename match is not case-sensitive by default; you can use the
+ /// <c>CaseSensitiveRetrieval</c> property to change this behavior. The
+ /// pathname can use forward-slashes or backward slashes.
+ /// </param>
+ ///
+ public void RemoveEntry(String fileName)
+ {
+ string modifiedName = ZipEntry.NameInArchive(fileName, null);
+ ZipEntry e = this[modifiedName];
+ if (e == null)
+ throw new ArgumentException("The entry you specified was not found in the zip archive.");
+
+ RemoveEntry(e);
+ }
+
+
+ #endregion
+
+ #region Destructors and Disposers
+
+ // /// <summary>
+ // /// This is the class Destructor, which gets called implicitly when the instance
+ // /// is destroyed. Because the <c>ZipFile</c> type implements IDisposable, this
+ // /// method calls Dispose(false).
+ // /// </summary>
+ // ~ZipFile()
+ // {
+ // // call Dispose with false. Since we're in the
+ // // destructor call, the managed resources will be
+ // // disposed of anyways.
+ // Dispose(false);
+ // }
+
+ /// <summary>
+ /// Closes the read and write streams associated
+ /// to the <c>ZipFile</c>, if necessary.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// The Dispose() method is generally employed implicitly, via a <c>using(..) {..}</c>
+ /// statement. (<c>Using...End Using</c> in VB) If you do not employ a using
+ /// statement, insure that your application calls Dispose() explicitly. For
+ /// example, in a Powershell application, or an application that uses the COM
+ /// interop interface, you must call Dispose() explicitly.
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example extracts an entry selected by name, from the Zip file to the
+ /// Console.
+ /// <code>
+ /// using (ZipFile zip = ZipFile.Read(zipfile))
+ /// {
+ /// foreach (ZipEntry e in zip)
+ /// {
+ /// if (WantThisEntry(e.FileName))
+ /// zip.Extract(e.FileName, Console.OpenStandardOutput());
+ /// }
+ /// } // Dispose() is called implicitly here.
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using zip As ZipFile = ZipFile.Read(zipfile)
+ /// Dim e As ZipEntry
+ /// For Each e In zip
+ /// If WantThisEntry(e.FileName) Then
+ /// zip.Extract(e.FileName, Console.OpenStandardOutput())
+ /// End If
+ /// Next
+ /// End Using ' Dispose is implicity called here
+ /// </code>
+ /// </example>
+ public void Dispose()
+ {
+ // dispose of the managed and unmanaged resources
+ Dispose(true);
+
+ // tell the GC that the Finalize process no longer needs
+ // to be run for this object.
+ GC.SuppressFinalize(this);
+ }
+
+ /// <summary>
+ /// Disposes any managed resources, if the flag is set, then marks the
+ /// instance disposed. This method is typically not called explicitly from
+ /// application code.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Applications should call <see cref="Dispose()">the no-arg Dispose method</see>.
+ /// </remarks>
+ ///
+ /// <param name="disposeManagedResources">
+ /// indicates whether the method should dispose streams or not.
+ /// </param>
+ protected virtual void Dispose(bool disposeManagedResources)
+ {
+ if (!this._disposed)
+ {
+ if (disposeManagedResources)
+ {
+ // dispose managed resources
+ if (_ReadStreamIsOurs)
+ {
+ if (_readstream != null)
+ {
+ // workitem 7704
+#if NETCF
+ _readstream.Close();
+#else
+ _readstream.Dispose();
+#endif
+ _readstream = null;
+ }
+ }
+ // only dispose the writestream if there is a backing file
+ if ((_temporaryFileName != null) && (_name != null))
+ if (_writestream != null)
+ {
+ // workitem 7704
+#if NETCF
+ _writestream.Close();
+#else
+ _writestream.Dispose();
+#endif
+ _writestream = null;
+ }
+
+#if !NETCF
+ // workitem 10030
+ if (this.ParallelDeflater != null)
+ {
+ this.ParallelDeflater.Dispose();
+ this.ParallelDeflater = null;
+ }
+#endif
+ }
+ this._disposed = true;
+ }
+ }
+ #endregion
+
+
+ #region private properties
+
+ internal Stream ReadStream
+ {
+ get
+ {
+ if (_readstream == null)
+ {
+ if (_readName != null || _name !=null)
+ {
+ _readstream = File.Open(_readName ?? _name,
+ FileMode.Open,
+ FileAccess.Read,
+ FileShare.Read | FileShare.Write);
+ _ReadStreamIsOurs = true;
+ }
+ }
+ return _readstream;
+ }
+ set
+ {
+ _readstream = value;
+ }
+ }
+
+
+
+ internal Stream WriteStream
+ {
+ // workitem 9763
+ get
+ {
+ if (_writestream != null) return _writestream;
+ if (_name == null) return _writestream;
+
+ if (_maxOutputSegmentSize != 0)
+ {
+ _writestream = ZipSegmentedStream.ForWriting(this._name, _maxOutputSegmentSize);
+ return _writestream;
+ }
+
+ SharedUtilities.CreateAndOpenUniqueTempFile(TempFileFolder ?? Path.GetDirectoryName(_name),
+ out _writestream,
+ out _temporaryFileName);
+ return _writestream;
+ }
+ set
+ {
+ _writestream = value;
+ }
+ }
+ #endregion
+
+ #region private fields
+ private TextWriter _StatusMessageTextWriter;
+ private bool _CaseSensitiveRetrieval;
+ private Stream _readstream;
+ private Stream _writestream;
+ private UInt16 _versionMadeBy;
+ private UInt16 _versionNeededToExtract;
+ private UInt32 _diskNumberWithCd;
+ private Int32 _maxOutputSegmentSize;
+ private UInt32 _numberOfSegmentsForMostRecentSave;
+ private ZipErrorAction _zipErrorAction;
+ private bool _disposed;
+ //private System.Collections.Generic.List<ZipEntry> _entries;
+ private System.Collections.Generic.Dictionary<String, ZipEntry> _entries;
+ private List<ZipEntry> _zipEntriesAsList;
+ private string _name;
+ private string _readName;
+ private string _Comment;
+ internal string _Password;
+ private bool _emitNtfsTimes = true;
+ private bool _emitUnixTimes;
+ private Ionic.Zlib.CompressionStrategy _Strategy = Ionic.Zlib.CompressionStrategy.Default;
+ private Ionic.Zip.CompressionMethod _compressionMethod = Ionic.Zip.CompressionMethod.Deflate;
+ private bool _fileAlreadyExists;
+ private string _temporaryFileName;
+ private bool _contentsChanged;
+ private bool _hasBeenSaved;
+ private String _TempFileFolder;
+ private bool _ReadStreamIsOurs = true;
+ private object LOCK = new object();
+ private bool _saveOperationCanceled;
+ private bool _extractOperationCanceled;
+ private bool _addOperationCanceled;
+ private EncryptionAlgorithm _Encryption;
+ private bool _JustSaved;
+ private long _locEndOfCDS = -1;
+ private uint _OffsetOfCentralDirectory;
+ private Int64 _OffsetOfCentralDirectory64;
+ private Nullable<bool> _OutputUsesZip64;
+ internal bool _inExtractAll;
+ private System.Text.Encoding _alternateEncoding = System.Text.Encoding.GetEncoding("IBM437"); // UTF-8
+ private ZipOption _alternateEncodingUsage = ZipOption.Never;
+ private static System.Text.Encoding _defaultEncoding = System.Text.Encoding.GetEncoding("IBM437");
+
+ private int _BufferSize = BufferSizeDefault;
+
+#if !NETCF
+ internal Ionic.Zlib.ParallelDeflateOutputStream ParallelDeflater;
+ private long _ParallelDeflateThreshold;
+ private int _maxBufferPairs = 16;
+#endif
+
+ internal Zip64Option _zip64 = Zip64Option.Default;
+#pragma warning disable 649
+ private bool _SavingSfx;
+#pragma warning restore 649
+
+ /// <summary>
+ /// Default size of the buffer used for IO.
+ /// </summary>
+ internal static readonly int BufferSizeDefault = 32768;
+
+ #endregion
+ }
+
+ /// <summary>
+ /// Options for using ZIP64 extensions when saving zip archives.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// Designed many years ago, the <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">original zip
+ /// specification from PKWARE</see> allowed for 32-bit quantities for the
+ /// compressed and uncompressed sizes of zip entries, as well as a 32-bit quantity
+ /// for specifying the length of the zip archive itself, and a maximum of 65535
+ /// entries. These limits are now regularly exceeded in many backup and archival
+ /// scenarios. Recently, PKWare added extensions to the original zip spec, called
+ /// "ZIP64 extensions", to raise those limitations. This property governs whether
+ /// DotNetZip will use those extensions when writing zip archives. The use of
+ /// these extensions is optional and explicit in DotNetZip because, despite the
+ /// status of ZIP64 as a bona fide standard, many other zip tools and libraries do
+ /// not support ZIP64, and therefore a zip file with ZIP64 extensions may be
+ /// unreadable by some of those other tools.
+ /// </para>
+ ///
+ /// <para>
+ /// Set this property to <see cref="Zip64Option.Always"/> to always use ZIP64
+ /// extensions when saving, regardless of whether your zip archive needs it.
+ /// Suppose you add 5 files, each under 100k, to a ZipFile. If you specify Always
+ /// for this flag, you will get a ZIP64 archive, though the archive does not need
+ /// to use ZIP64 because none of the original zip limits had been exceeded.
+ /// </para>
+ ///
+ /// <para>
+ /// Set this property to <see cref="Zip64Option.Never"/> to tell the DotNetZip
+ /// library to never use ZIP64 extensions. This is useful for maximum
+ /// compatibility and interoperability, at the expense of the capability of
+ /// handling large files or large archives. NB: Windows Explorer in Windows XP
+ /// and Windows Vista cannot currently extract files from a zip64 archive, so if
+ /// you want to guarantee that a zip archive produced by this library will work in
+ /// Windows Explorer, use <c>Never</c>. If you set this property to <see
+ /// cref="Zip64Option.Never"/>, and your application creates a zip that would
+ /// exceed one of the Zip limits, the library will throw an exception while saving
+ /// the zip file.
+ /// </para>
+ ///
+ /// <para>
+ /// Set this property to <see cref="Zip64Option.AsNecessary"/> to tell the
+ /// DotNetZip library to use the ZIP64 extensions when required by the
+ /// entry. After the file is compressed, the original and compressed sizes are
+ /// checked, and if they exceed the limits described above, then zip64 can be
+ /// used. That is the general idea, but there is an additional wrinkle when saving
+ /// to a non-seekable device, like the ASP.NET <c>Response.OutputStream</c>, or
+ /// <c>Console.Out</c>. When using non-seekable streams for output, the entry
+ /// header - which indicates whether zip64 is in use - is emitted before it is
+ /// known if zip64 is necessary. It is only after all entries have been saved
+ /// that it can be known if ZIP64 will be required. On seekable output streams,
+ /// after saving all entries, the library can seek backward and re-emit the zip
+ /// file header to be consistent with the actual ZIP64 requirement. But using a
+ /// non-seekable output stream, the library cannot seek backward, so the header
+ /// can never be changed. In other words, the archive's use of ZIP64 extensions is
+ /// not alterable after the header is emitted. Therefore, when saving to
+ /// non-seekable streams, using <see cref="Zip64Option.AsNecessary"/> is the same
+ /// as using <see cref="Zip64Option.Always"/>: it will always produce a zip
+ /// archive that uses ZIP64 extensions.
+ /// </para>
+ ///
+ /// </remarks>
+ internal enum Zip64Option
+ {
+ /// <summary>
+ /// The default behavior, which is "Never".
+ /// (For COM clients, this is a 0 (zero).)
+ /// </summary>
+ Default = 0,
+ /// <summary>
+ /// Do not use ZIP64 extensions when writing zip archives.
+ /// (For COM clients, this is a 0 (zero).)
+ /// </summary>
+ Never = 0,
+ /// <summary>
+ /// Use ZIP64 extensions when writing zip archives, as necessary.
+ /// For example, when a single entry exceeds 0xFFFFFFFF in size, or when the archive as a whole
+ /// exceeds 0xFFFFFFFF in size, or when there are more than 65535 entries in an archive.
+ /// (For COM clients, this is a 1.)
+ /// </summary>
+ AsNecessary = 1,
+ /// <summary>
+ /// Always use ZIP64 extensions when writing zip archives, even when unnecessary.
+ /// (For COM clients, this is a 2.)
+ /// </summary>
+ Always
+ }
+
+
+ /// <summary>
+ /// An enum representing the values on a three-way toggle switch
+ /// for various options in the library. This might be used to
+ /// specify whether to employ a particular text encoding, or to use
+ /// ZIP64 extensions, or some other option.
+ /// </summary>
+ internal enum ZipOption
+ {
+ /// <summary>
+ /// The default behavior. This is the same as "Never".
+ /// (For COM clients, this is a 0 (zero).)
+ /// </summary>
+ Default = 0,
+ /// <summary>
+ /// Never use the associated option.
+ /// (For COM clients, this is a 0 (zero).)
+ /// </summary>
+ Never = 0,
+ /// <summary>
+ /// Use the associated behavior "as necessary."
+ /// (For COM clients, this is a 1.)
+ /// </summary>
+ AsNecessary = 1,
+ /// <summary>
+ /// Use the associated behavior Always, whether necessary or not.
+ /// (For COM clients, this is a 2.)
+ /// </summary>
+ Always
+ }
+
+
+ enum AddOrUpdateAction
+ {
+ AddOnly = 0,
+ AddOrUpdate
+ }
+
+}
+
+
+
+// ==================================================================
+//
+// Information on the ZIP format:
+//
+// From
+// http://www.pkware.com/documents/casestudies/APPNOTE.TXT
+//
+// Overall .ZIP file format:
+//
+// [local file header 1]
+// [file data 1]
+// [data descriptor 1] ** sometimes
+// .
+// .
+// .
+// [local file header n]
+// [file data n]
+// [data descriptor n] ** sometimes
+// [archive decryption header]
+// [archive extra data record]
+// [central directory]
+// [zip64 end of central directory record]
+// [zip64 end of central directory locator]
+// [end of central directory record]
+//
+// Local File Header format:
+// local file header signature ... 4 bytes (0x04034b50)
+// version needed to extract ..... 2 bytes
+// general purpose bit field ..... 2 bytes
+// compression method ............ 2 bytes
+// last mod file time ............ 2 bytes
+// last mod file date............. 2 bytes
+// crc-32 ........................ 4 bytes
+// compressed size................ 4 bytes
+// uncompressed size.............. 4 bytes
+// file name length............... 2 bytes
+// extra field length ............ 2 bytes
+// file name varies
+// extra field varies
+//
+//
+// Data descriptor: (used only when bit 3 of the general purpose bitfield is set)
+// (although, I have found zip files where bit 3 is not set, yet this descriptor is present!)
+// local file header signature 4 bytes (0x08074b50) ** sometimes!!! Not always
+// crc-32 4 bytes
+// compressed size 4 bytes
+// uncompressed size 4 bytes
+//
+//
+// Central directory structure:
+//
+// [file header 1]
+// .
+// .
+// .
+// [file header n]
+// [digital signature]
+//
+//
+// File header: (This is a ZipDirEntry)
+// central file header signature 4 bytes (0x02014b50)
+// version made by 2 bytes
+// version needed to extract 2 bytes
+// general purpose bit flag 2 bytes
+// compression method 2 bytes
+// last mod file time 2 bytes
+// last mod file date 2 bytes
+// crc-32 4 bytes
+// compressed size 4 bytes
+// uncompressed size 4 bytes
+// file name length 2 bytes
+// extra field length 2 bytes
+// file comment length 2 bytes
+// disk number start 2 bytes
+// internal file attributes ** 2 bytes
+// external file attributes *** 4 bytes
+// relative offset of local header 4 bytes
+// file name (variable size)
+// extra field (variable size)
+// file comment (variable size)
+//
+// ** The internal file attributes, near as I can tell,
+// uses 0x01 for a file and a 0x00 for a directory.
+//
+// ***The external file attributes follows the MS-DOS file attribute byte, described here:
+// at http://support.microsoft.com/kb/q125019/
+// 0x0010 => directory
+// 0x0020 => file
+//
+//
+// End of central directory record:
+//
+// end of central dir signature 4 bytes (0x06054b50)
+// number of this disk 2 bytes
+// number of the disk with the
+// start of the central directory 2 bytes
+// total number of entries in the
+// central directory on this disk 2 bytes
+// total number of entries in
+// the central directory 2 bytes
+// size of the central directory 4 bytes
+// offset of start of central
+// directory with respect to
+// the starting disk number 4 bytes
+// .ZIP file comment length 2 bytes
+// .ZIP file comment (variable size)
+//
+// date and time are packed values, as MSDOS did them
+// time: bits 0-4 : seconds (divided by 2)
+// 5-10: minute
+// 11-15: hour
+// date bits 0-4 : day
+// 5-8: month
+// 9-15 year (since 1980)
+//
+// see http://msdn.microsoft.com/en-us/library/ms724274(VS.85).aspx
+
--- /dev/null
+// ZipFile.x-IEnumerable.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2006, 2007, 2008, 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2009-December-26 15:13:26>
+//
+// ------------------------------------------------------------------
+//
+// This module defines smoe methods for IEnumerable support. It is
+// particularly important for COM to have these things in a separate module.
+//
+// ------------------------------------------------------------------
+
+
+namespace Ionic.Zip
+{
+
+ // For some weird reason, the method with the DispId(-4) attribute, which is used as
+ // the _NewEnum() method, and which is required to get enumeration to work from COM
+ // environments like VBScript and Javascript (etc) must be the LAST MEMBER in the
+ // source. In the event of Partial classes, it needs to be the last member defined
+ // in the last source module. The source modules are ordered alphabetically by
+ // filename. Not sure why this is true. In any case, we put the enumeration stuff
+ // here in this oddly-named module, for this reason.
+ //
+
+
+
+ internal partial class ZipFile
+ {
+
+
+
+
+ /// <summary>
+ /// Generic IEnumerator support, for use of a ZipFile in an enumeration.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// You probably do not want to call <c>GetEnumerator</c> explicitly. Instead
+ /// it is implicitly called when you use a <see langword="foreach"/> loop in C#, or a
+ /// <c>For Each</c> loop in VB.NET.
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example reads a zipfile of a given name, then enumerates the
+ /// entries in that zip file, and displays the information about each
+ /// entry on the Console.
+ /// <code>
+ /// using (ZipFile zip = ZipFile.Read(zipfile))
+ /// {
+ /// bool header = true;
+ /// foreach (ZipEntry e in zip)
+ /// {
+ /// if (header)
+ /// {
+ /// System.Console.WriteLine("Zipfile: {0}", zip.Name);
+ /// System.Console.WriteLine("Version Needed: 0x{0:X2}", e.VersionNeeded);
+ /// System.Console.WriteLine("BitField: 0x{0:X2}", e.BitField);
+ /// System.Console.WriteLine("Compression Method: 0x{0:X2}", e.CompressionMethod);
+ /// System.Console.WriteLine("\n{1,-22} {2,-6} {3,4} {4,-8} {0}",
+ /// "Filename", "Modified", "Size", "Ratio", "Packed");
+ /// System.Console.WriteLine(new System.String('-', 72));
+ /// header = false;
+ /// }
+ ///
+ /// System.Console.WriteLine("{1,-22} {2,-6} {3,4:F0}% {4,-8} {0}",
+ /// e.FileName,
+ /// e.LastModified.ToString("yyyy-MM-dd HH:mm:ss"),
+ /// e.UncompressedSize,
+ /// e.CompressionRatio,
+ /// e.CompressedSize);
+ ///
+ /// e.Extract();
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Dim ZipFileToExtract As String = "c:\foo.zip"
+ /// Using zip As ZipFile = ZipFile.Read(ZipFileToExtract)
+ /// Dim header As Boolean = True
+ /// Dim e As ZipEntry
+ /// For Each e In zip
+ /// If header Then
+ /// Console.WriteLine("Zipfile: {0}", zip.Name)
+ /// Console.WriteLine("Version Needed: 0x{0:X2}", e.VersionNeeded)
+ /// Console.WriteLine("BitField: 0x{0:X2}", e.BitField)
+ /// Console.WriteLine("Compression Method: 0x{0:X2}", e.CompressionMethod)
+ /// Console.WriteLine(ChrW(10) & "{1,-22} {2,-6} {3,4} {4,-8} {0}", _
+ /// "Filename", "Modified", "Size", "Ratio", "Packed" )
+ /// Console.WriteLine(New String("-"c, 72))
+ /// header = False
+ /// End If
+ /// Console.WriteLine("{1,-22} {2,-6} {3,4:F0}% {4,-8} {0}", _
+ /// e.FileName, _
+ /// e.LastModified.ToString("yyyy-MM-dd HH:mm:ss"), _
+ /// e.UncompressedSize, _
+ /// e.CompressionRatio, _
+ /// e.CompressedSize )
+ /// e.Extract
+ /// Next
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <returns>A generic enumerator suitable for use within a foreach loop.</returns>
+ public System.Collections.Generic.IEnumerator<ZipEntry> GetEnumerator()
+ {
+ foreach (ZipEntry e in _entries.Values)
+ yield return e;
+ }
+
+ System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
+ {
+ return GetEnumerator();
+ }
+
+
+ /// <summary>
+ /// An IEnumerator, for use of a ZipFile in a foreach construct.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This method is included for COM support. An application generally does not call
+ /// this method directly. It is called implicitly by COM clients when enumerating
+ /// the entries in the ZipFile instance. In VBScript, this is done with a <c>For Each</c>
+ /// statement. In Javascript, this is done with <c>new Enumerator(zipfile)</c>.
+ /// </remarks>
+ ///
+ /// <returns>
+ /// The IEnumerator over the entries in the ZipFile.
+ /// </returns>
+ [System.Runtime.InteropServices.DispId(-4)]
+ public System.Collections.IEnumerator GetNewEnum() // the name of this method is not significant
+ {
+ return GetEnumerator();
+ }
+
+ }
+}
--- /dev/null
+// ZipInputStream.cs
+//
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009-2010 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-July-31 14:48:30>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the ZipInputStream class, which is a stream metaphor for
+// reading zip files. This class does not depend on Ionic.Zip.ZipFile, but rather
+// stands alongside it as an alternative "container" for ZipEntry, when reading zips.
+//
+// It adds one interesting method to the normal "stream" interface: GetNextEntry.
+//
+// ------------------------------------------------------------------
+//
+
+using System;
+using System.Threading;
+using System.Collections.Generic;
+using System.IO;
+using Ionic.Zip;
+
+namespace Ionic.Zip
+{
+ /// <summary>
+ /// Provides a stream metaphor for reading zip files.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This class provides an alternative programming model for reading zip files to
+ /// the one enabled by the <see cref="ZipFile"/> class. Use this when reading zip
+ /// files, as an alternative to the <see cref="ZipFile"/> class, when you would
+ /// like to use a Stream class to read the file.
+ /// </para>
+ ///
+ /// <para>
+ /// Some application designs require a readable stream for input. This stream can
+ /// be used to read a zip file, and extract entries.
+ /// </para>
+ ///
+ /// <para>
+ /// Both the <c>ZipInputStream</c> class and the <c>ZipFile</c> class can be used
+ /// to read and extract zip files. Both of them support many of the common zip
+ /// features, including Unicode, different compression levels, and ZIP64. The
+ /// programming models differ. For example, when extracting entries via calls to
+ /// the <c>GetNextEntry()</c> and <c>Read()</c> methods on the
+ /// <c>ZipInputStream</c> class, the caller is responsible for creating the file,
+ /// writing the bytes into the file, setting the attributes on the file, and
+ /// setting the created, last modified, and last accessed timestamps on the
+ /// file. All of these things are done automatically by a call to <see
+ /// cref="ZipEntry.Extract()">ZipEntry.Extract()</see>. For this reason, the
+ /// <c>ZipInputStream</c> is generally recommended for when your application wants
+ /// to extract the data, without storing that data into a file.
+ /// </para>
+ ///
+ /// <para>
+ /// Aside from the obvious differences in programming model, there are some
+ /// differences in capability between the <c>ZipFile</c> class and the
+ /// <c>ZipInputStream</c> class.
+ /// </para>
+ ///
+ /// <list type="bullet">
+ /// <item>
+ /// <c>ZipFile</c> can be used to create or update zip files, or read and
+ /// extract zip files. <c>ZipInputStream</c> can be used only to read and
+ /// extract zip files. If you want to use a stream to create zip files, check
+ /// out the <see cref="ZipOutputStream"/>.
+ /// </item>
+ ///
+ /// <item>
+ /// <c>ZipInputStream</c> cannot read segmented or spanned
+ /// zip files.
+ /// </item>
+ ///
+ /// <item>
+ /// <c>ZipInputStream</c> will not read Zip file comments.
+ /// </item>
+ ///
+ /// <item>
+ /// When reading larger files, <c>ZipInputStream</c> will always underperform
+ /// <c>ZipFile</c>. This is because the <c>ZipInputStream</c> does a full scan on the
+ /// zip file, while the <c>ZipFile</c> class reads the central directory of the
+ /// zip file.
+ /// </item>
+ ///
+ /// </list>
+ ///
+ /// </remarks>
+ internal class ZipInputStream : Stream
+ {
+ /// <summary>
+ /// Create a <c>ZipInputStream</c>, wrapping it around an existing stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// While the <see cref="ZipFile"/> class is generally easier
+ /// to use, this class provides an alternative to those
+ /// applications that want to read from a zipfile directly,
+ /// using a <see cref="System.IO.Stream"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// Both the <c>ZipInputStream</c> class and the <c>ZipFile</c> class can be used
+ /// to read and extract zip files. Both of them support many of the common zip
+ /// features, including Unicode, different compression levels, and ZIP64. The
+ /// programming models differ. For example, when extracting entries via calls to
+ /// the <c>GetNextEntry()</c> and <c>Read()</c> methods on the
+ /// <c>ZipInputStream</c> class, the caller is responsible for creating the file,
+ /// writing the bytes into the file, setting the attributes on the file, and
+ /// setting the created, last modified, and last accessed timestamps on the
+ /// file. All of these things are done automatically by a call to <see
+ /// cref="ZipEntry.Extract()">ZipEntry.Extract()</see>. For this reason, the
+ /// <c>ZipInputStream</c> is generally recommended for when your application wants
+ /// to extract the data, without storing that data into a file.
+ /// </para>
+ ///
+ /// <para>
+ /// Aside from the obvious differences in programming model, there are some
+ /// differences in capability between the <c>ZipFile</c> class and the
+ /// <c>ZipInputStream</c> class.
+ /// </para>
+ ///
+ /// <list type="bullet">
+ /// <item>
+ /// <c>ZipFile</c> can be used to create or update zip files, or read and extract
+ /// zip files. <c>ZipInputStream</c> can be used only to read and extract zip
+ /// files. If you want to use a stream to create zip files, check out the <see
+ /// cref="ZipOutputStream"/>.
+ /// </item>
+ ///
+ /// <item>
+ /// <c>ZipInputStream</c> cannot read segmented or spanned
+ /// zip files.
+ /// </item>
+ ///
+ /// <item>
+ /// <c>ZipInputStream</c> will not read Zip file comments.
+ /// </item>
+ ///
+ /// <item>
+ /// When reading larger files, <c>ZipInputStream</c> will always underperform
+ /// <c>ZipFile</c>. This is because the <c>ZipInputStream</c> does a full scan on the
+ /// zip file, while the <c>ZipFile</c> class reads the central directory of the
+ /// zip file.
+ /// </item>
+ ///
+ /// </list>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="stream">
+ /// The stream to read. It must be readable. This stream will be closed at
+ /// the time the <c>ZipInputStream</c> is closed.
+ /// </param>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to read a zip file, and extract entries, using the
+ /// <c>ZipInputStream</c> class.
+ ///
+ /// <code lang="C#">
+ /// private void Unzip()
+ /// {
+ /// byte[] buffer= new byte[2048];
+ /// int n;
+ /// using (var raw = File.Open(inputFileName, FileMode.Open, FileAccess.Read))
+ /// {
+ /// using (var input= new ZipInputStream(raw))
+ /// {
+ /// ZipEntry e;
+ /// while (( e = input.GetNextEntry()) != null)
+ /// {
+ /// if (e.IsDirectory) continue;
+ /// string outputPath = Path.Combine(extractDir, e.FileName);
+ /// using (var output = File.Open(outputPath, FileMode.Create, FileAccess.ReadWrite))
+ /// {
+ /// while ((n= input.Read(buffer, 0, buffer.Length)) > 0)
+ /// {
+ /// output.Write(buffer,0,n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Private Sub UnZip()
+ /// Dim inputFileName As String = "MyArchive.zip"
+ /// Dim extractDir As String = "extract"
+ /// Dim buffer As Byte() = New Byte(2048) {}
+ /// Using raw As FileStream = File.Open(inputFileName, FileMode.Open, FileAccess.Read)
+ /// Using input As ZipInputStream = New ZipInputStream(raw)
+ /// Dim e As ZipEntry
+ /// Do While (Not e = input.GetNextEntry Is Nothing)
+ /// If Not e.IsDirectory Then
+ /// Using output As FileStream = File.Open(Path.Combine(extractDir, e.FileName), _
+ /// FileMode.Create, FileAccess.ReadWrite)
+ /// Dim n As Integer
+ /// Do While (n = input.Read(buffer, 0, buffer.Length) > 0)
+ /// output.Write(buffer, 0, n)
+ /// Loop
+ /// End Using
+ /// End If
+ /// Loop
+ /// End Using
+ /// End Using
+ /// End Sub
+ /// </code>
+ /// </example>
+ public ZipInputStream(Stream stream) : this (stream, false) { }
+
+
+
+ /// <summary>
+ /// Create a <c>ZipInputStream</c>, given the name of an existing zip file.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This constructor opens a <c>FileStream</c> for the given zipfile, and
+ /// wraps a <c>ZipInputStream</c> around that. See the documentation for the
+ /// <see cref="ZipInputStream(Stream)"/> constructor for full details.
+ /// </para>
+ ///
+ /// <para>
+ /// While the <see cref="ZipFile"/> class is generally easier
+ /// to use, this class provides an alternative to those
+ /// applications that want to read from a zipfile directly,
+ /// using a <see cref="System.IO.Stream"/>.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="fileName">
+ /// The name of the filesystem file to read.
+ /// </param>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to read a zip file, and extract entries, using the
+ /// <c>ZipInputStream</c> class.
+ ///
+ /// <code lang="C#">
+ /// private void Unzip()
+ /// {
+ /// byte[] buffer= new byte[2048];
+ /// int n;
+ /// using (var input= new ZipInputStream(inputFileName))
+ /// {
+ /// ZipEntry e;
+ /// while (( e = input.GetNextEntry()) != null)
+ /// {
+ /// if (e.IsDirectory) continue;
+ /// string outputPath = Path.Combine(extractDir, e.FileName);
+ /// using (var output = File.Open(outputPath, FileMode.Create, FileAccess.ReadWrite))
+ /// {
+ /// while ((n= input.Read(buffer, 0, buffer.Length)) > 0)
+ /// {
+ /// output.Write(buffer,0,n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Private Sub UnZip()
+ /// Dim inputFileName As String = "MyArchive.zip"
+ /// Dim extractDir As String = "extract"
+ /// Dim buffer As Byte() = New Byte(2048) {}
+ /// Using input As ZipInputStream = New ZipInputStream(inputFileName)
+ /// Dim e As ZipEntry
+ /// Do While (Not e = input.GetNextEntry Is Nothing)
+ /// If Not e.IsDirectory Then
+ /// Using output As FileStream = File.Open(Path.Combine(extractDir, e.FileName), _
+ /// FileMode.Create, FileAccess.ReadWrite)
+ /// Dim n As Integer
+ /// Do While (n = input.Read(buffer, 0, buffer.Length) > 0)
+ /// output.Write(buffer, 0, n)
+ /// Loop
+ /// End Using
+ /// End If
+ /// Loop
+ /// End Using
+ /// End Sub
+ /// </code>
+ /// </example>
+ public ZipInputStream(String fileName)
+ {
+ Stream stream = File.Open(fileName, FileMode.Open, FileAccess.Read, FileShare.Read );
+ _Init(stream, false, fileName);
+ }
+
+
+ /// <summary>
+ /// Create a <c>ZipInputStream</c>, explicitly specifying whether to
+ /// keep the underlying stream open.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// See the documentation for the <see
+ /// cref="ZipInputStream(Stream)">ZipInputStream(Stream)</see>
+ /// constructor for a discussion of the class, and an example of how to use the class.
+ /// </remarks>
+ ///
+ /// <param name="stream">
+ /// The stream to read from. It must be readable.
+ /// </param>
+ ///
+ /// <param name="leaveOpen">
+ /// true if the application would like the stream
+ /// to remain open after the <c>ZipInputStream</c> has been closed.
+ /// </param>
+ public ZipInputStream(Stream stream, bool leaveOpen)
+ {
+ _Init(stream, leaveOpen, null);
+ }
+
+ private void _Init(Stream stream, bool leaveOpen, string name)
+ {
+ _inputStream = stream;
+ if (!_inputStream.CanRead)
+ throw new ZipException("The stream must be readable.");
+ _container= new ZipContainer(this);
+ _provisionalAlternateEncoding = System.Text.Encoding.GetEncoding("IBM437");
+ _leaveUnderlyingStreamOpen = leaveOpen;
+ _findRequired= true;
+ _name = name ?? "(stream)";
+ }
+
+
+ /// <summary>Provides a string representation of the instance.</summary>
+ /// <remarks>
+ /// <para>
+ /// This can be useful for debugging purposes.
+ /// </para>
+ /// </remarks>
+ /// <returns>a string representation of the instance.</returns>
+ public override String ToString()
+ {
+ return String.Format ("ZipInputStream::{0}(leaveOpen({1})))", _name, _leaveUnderlyingStreamOpen);
+ }
+
+
+ /// <summary>
+ /// The text encoding to use when reading entries into the zip archive, for
+ /// those entries whose filenames or comments cannot be encoded with the
+ /// default (IBM437) encoding.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// In <see href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">its
+ /// zip specification</see>, PKWare describes two options for encoding
+ /// filenames and comments: using IBM437 or UTF-8. But, some archiving tools
+ /// or libraries do not follow the specification, and instead encode
+ /// characters using the system default code page. For example, WinRAR when
+ /// run on a machine in Shanghai may encode filenames with the Big-5 Chinese
+ /// (950) code page. This behavior is contrary to the Zip specification, but
+ /// it occurs anyway.
+ /// </para>
+ ///
+ /// <para>
+ /// When using DotNetZip to read zip archives that use something other than
+ /// UTF-8 or IBM437, set this property to specify the code page to use when
+ /// reading encoded filenames and comments for each <c>ZipEntry</c> in the zip
+ /// file.
+ /// </para>
+ ///
+ /// <para>
+ /// This property is "provisional". When the entry in the zip archive is not
+ /// explicitly marked as using UTF-8, then IBM437 is used to decode filenames
+ /// and comments. If a loss of data would result from using IBM436 -
+ /// specifically when encoding and decoding is not reflexive - the codepage
+ /// specified here is used. It is possible, therefore, to have a given entry
+ /// with a <c>Comment</c> encoded in IBM437 and a <c>FileName</c> encoded with
+ /// the specified "provisional" codepage.
+ /// </para>
+ ///
+ /// <para>
+ /// When a zip file uses an arbitrary, non-UTF8 code page for encoding, there
+ /// is no standard way for the reader application - whether DotNetZip, WinZip,
+ /// WinRar, or something else - to know which codepage has been used for the
+ /// entries. Readers of zip files are not able to inspect the zip file and
+ /// determine the codepage that was used for the entries contained within it.
+ /// It is left to the application or user to determine the necessary codepage
+ /// when reading zip files encoded this way. If you use an incorrect codepage
+ /// when reading a zipfile, you will get entries with filenames that are
+ /// incorrect, and the incorrect filenames may even contain characters that
+ /// are not legal for use within filenames in Windows. Extracting entries with
+ /// illegal characters in the filenames will lead to exceptions. It's too bad,
+ /// but this is just the way things are with code pages in zip files. Caveat
+ /// Emptor.
+ /// </para>
+ ///
+ /// </remarks>
+ public System.Text.Encoding ProvisionalAlternateEncoding
+ {
+ get
+ {
+ return _provisionalAlternateEncoding;
+ }
+ set
+ {
+ _provisionalAlternateEncoding = value;
+ }
+ }
+
+
+ /// <summary>
+ /// Size of the work buffer to use for the ZLIB codec during decompression.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Setting this affects the performance and memory efficiency of compression
+ /// and decompression. For larger files, setting this to a larger size may
+ /// improve performance, but the exact numbers vary depending on available
+ /// memory, and a bunch of other variables. I don't have good firm
+ /// recommendations on how to set it. You'll have to test it yourself. Or
+ /// just leave it alone and accept the default.
+ /// </remarks>
+ public int CodecBufferSize
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// Sets the password to be used on the <c>ZipInputStream</c> instance.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// When reading a zip archive, this password is used to read and decrypt the
+ /// entries that are encrypted within the zip file. When entries within a zip
+ /// file use different passwords, set the appropriate password for the entry
+ /// before the first call to <c>Read()</c> for each entry.
+ /// </para>
+ ///
+ /// <para>
+ /// When reading an entry that is not encrypted, the value of this property is
+ /// ignored.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example uses the ZipInputStream to read and extract entries from a
+ /// zip file, using a potentially different password for each entry.
+ ///
+ /// <code lang="C#">
+ /// byte[] buffer= new byte[2048];
+ /// int n;
+ /// using (var raw = File.Open(_inputFileName, FileMode.Open, FileAccess.Read ))
+ /// {
+ /// using (var input= new ZipInputStream(raw))
+ /// {
+ /// ZipEntry e;
+ /// while (( e = input.GetNextEntry()) != null)
+ /// {
+ /// input.Password = PasswordForEntry(e.FileName);
+ /// if (e.IsDirectory) continue;
+ /// string outputPath = Path.Combine(_extractDir, e.FileName);
+ /// using (var output = File.Open(outputPath, FileMode.Create, FileAccess.ReadWrite))
+ /// {
+ /// while ((n= input.Read(buffer,0,buffer.Length)) > 0)
+ /// {
+ /// output.Write(buffer,0,n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// }
+ ///
+ /// </code>
+ /// </example>
+ public String Password
+ {
+ set
+ {
+ if (_closed)
+ {
+ _exceptionPending = true;
+ throw new System.InvalidOperationException("The stream has been closed.");
+ }
+ _Password = value;
+ }
+ }
+
+
+ private void SetupStream()
+ {
+ // Seek to the correct posn in the file, and open a
+ // stream that can be read.
+ _crcStream= _currentEntry.InternalOpenReader(_Password);
+ _LeftToRead = _crcStream.Length;
+ _needSetup = false;
+ }
+
+
+
+ internal Stream ReadStream
+ {
+ get
+ {
+ return _inputStream;
+ }
+ }
+
+
+ /// <summary>
+ /// Read the data from the stream into the buffer.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The data for the zipentry will be decrypted and uncompressed, as
+ /// necessary, before being copied into the buffer.
+ /// </para>
+ ///
+ /// <para>
+ /// You must set the <see cref="Password"/> property before calling
+ /// <c>Read()</c> the first time for an encrypted entry. To determine if an
+ /// entry is encrypted and requires a password, check the <see
+ /// cref="ZipEntry.Encryption">ZipEntry.Encryption</see> property.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="buffer">The buffer to hold the data read from the stream.</param>
+ /// <param name="offset">the offset within the buffer to copy the first byte read.</param>
+ /// <param name="count">the number of bytes to read.</param>
+ /// <returns>the number of bytes read, after decryption and decompression.</returns>
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ if (_closed)
+ {
+ _exceptionPending = true;
+ throw new System.InvalidOperationException("The stream has been closed.");
+ }
+
+ if (_needSetup)
+ SetupStream();
+
+ if (_LeftToRead == 0) return 0;
+
+ int len = (_LeftToRead > count) ? count : (int)_LeftToRead;
+ int n = _crcStream.Read(buffer, offset, len);
+
+ _LeftToRead -= n;
+
+ if (_LeftToRead == 0)
+ {
+ int CrcResult = _crcStream.Crc;
+ _currentEntry.VerifyCrcAfterExtract(CrcResult);
+ _inputStream.Seek(_endOfEntry, SeekOrigin.Begin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(_inputStream);
+ }
+
+ return n;
+ }
+
+
+
+ /// <summary>
+ /// Read the next entry from the zip file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Call this method just before calling <see cref="Read(byte[], int, int)"/>,
+ /// to position the pointer in the zip file to the next entry that can be
+ /// read. Subsequent calls to <c>Read()</c>, will decrypt and decompress the
+ /// data in the zip file, until <c>Read()</c> returns 0.
+ /// </para>
+ ///
+ /// <para>
+ /// Each time you call <c>GetNextEntry()</c>, the pointer in the wrapped
+ /// stream is moved to the next entry in the zip file. If you call <see
+ /// cref="Seek(long, SeekOrigin)"/>, and thus re-position the pointer within
+ /// the file, you will need to call <c>GetNextEntry()</c> again, to insure
+ /// that the file pointer is positioned at the beginning of a zip entry.
+ /// </para>
+ ///
+ /// <para>
+ /// This method returns the <c>ZipEntry</c>. Using a stream approach, you will
+ /// read the raw bytes for an entry in a zip file via calls to <c>Read()</c>.
+ /// Alternatively, you can extract an entry into a file, or a stream, by
+ /// calling <see cref="ZipEntry.Extract()"/>, or one of its siblings.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <returns>
+ /// The <c>ZipEntry</c> read. Returns null (or Nothing in VB) if there are no more
+ /// entries in the zip file.
+ /// </returns>
+ ///
+ public ZipEntry GetNextEntry()
+ {
+ if (_findRequired)
+ {
+ // find the next signature
+ long d = SharedUtilities.FindSignature(_inputStream, ZipConstants.ZipEntrySignature);
+ if (d == -1) return null;
+ // back up 4 bytes: ReadEntry assumes the file pointer is positioned before the entry signature
+ _inputStream.Seek(-4, SeekOrigin.Current);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(_inputStream);
+ }
+ // workitem 10923
+ else if (_firstEntry)
+ {
+ // we've already read one entry.
+ // Seek to the end of it.
+ _inputStream.Seek(_endOfEntry, SeekOrigin.Begin);
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(_inputStream);
+ }
+
+ _currentEntry = ZipEntry.ReadEntry(_container, !_firstEntry);
+ // ReadEntry leaves the file position after all the entry
+ // data and the optional bit-3 data descriptpr. This is
+ // where the next entry would normally start.
+ _endOfEntry = _inputStream.Position;
+ _firstEntry = true;
+ _needSetup = true;
+ _findRequired= false;
+ return _currentEntry;
+ }
+
+
+ /// <summary>
+ /// Dispose the stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method disposes the ZipInputStream. It may also close the
+ /// underlying stream, depending on which constructor was used.
+ /// </para>
+ ///
+ /// <para>
+ /// Typically the application will call <c>Dispose()</c> implicitly, via
+ /// a <c>using</c> statement in C#, or a <c>Using</c> statement in VB.
+ /// </para>
+ ///
+ /// <para>
+ /// Application code won't call this code directly. This method may
+ /// be invoked in two distinct scenarios. If disposing == true, the
+ /// method has been called directly or indirectly by a user's code,
+ /// for example via the public Dispose() method. In this case, both
+ /// managed and unmanaged resources can be referenced and disposed.
+ /// If disposing == false, the method has been called by the runtime
+ /// from inside the object finalizer and this method should not
+ /// reference other objects; in that case only unmanaged resources
+ /// must be referenced or disposed.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="disposing">
+ /// true if the Dispose method was invoked by user code.
+ /// </param>
+ protected override void Dispose(bool disposing)
+ {
+ if (_closed) return;
+
+ if (disposing) // not called from finalizer
+ {
+ // When ZipInputStream is used within a using clause, and an
+ // exception is thrown, Close() is invoked. But we don't want to
+ // try to write anything in that case. Eventually the exception
+ // will be propagated to the application.
+ if (_exceptionPending) return;
+
+ if (!_leaveUnderlyingStreamOpen)
+ {
+#if NETCF
+ _inputStream.Close();
+#else
+ _inputStream.Dispose();
+#endif
+ }
+ }
+ _closed= true;
+ }
+
+
+ /// <summary>
+ /// Always returns true.
+ /// </summary>
+ public override bool CanRead { get { return true; }}
+
+ /// <summary>
+ /// Returns the value of <c>CanSeek</c> for the underlying (wrapped) stream.
+ /// </summary>
+ public override bool CanSeek { get { return _inputStream.CanSeek; } }
+
+ /// <summary>
+ /// Always returns false.
+ /// </summary>
+ public override bool CanWrite { get { return false; } }
+
+ /// <summary>
+ /// Returns the length of the underlying stream.
+ /// </summary>
+ public override long Length { get { return _inputStream.Length; }}
+
+ /// <summary>
+ /// Gets or sets the position of the underlying stream.
+ /// </summary>
+ /// <remarks>
+ /// Setting the position is equivalent to calling <c>Seek(value, SeekOrigin.Begin)</c>.
+ /// </remarks>
+ public override long Position
+ {
+ get { return _inputStream.Position;}
+ set { Seek(value, SeekOrigin.Begin); }
+ }
+
+ /// <summary>
+ /// This is a no-op.
+ /// </summary>
+ public override void Flush()
+ {
+ throw new NotSupportedException("Flush");
+ }
+
+
+ /// <summary>
+ /// This method always throws a NotSupportedException.
+ /// </summary>
+ /// <param name="buffer">ignored</param>
+ /// <param name="offset">ignored</param>
+ /// <param name="count">ignored</param>
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ throw new NotSupportedException("Write");
+ }
+
+
+ /// <summary>
+ /// This method seeks in the underlying stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Call this method if you want to seek around within the zip file for random access.
+ /// </para>
+ ///
+ /// <para>
+ /// Applications can intermix calls to <c>Seek()</c> with calls to <see
+ /// cref="GetNextEntry()"/>. After a call to <c>Seek()</c>,
+ /// <c>GetNextEntry()</c> will get the next <c>ZipEntry</c> that falls after
+ /// the current position in the input stream. You're on your own for finding
+ /// out just where to seek in the stream, to get to the various entries.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="offset">the offset point to seek to</param>
+ /// <param name="origin">the reference point from which to seek</param>
+ /// <returns>The new position</returns>
+ public override long Seek(long offset, SeekOrigin origin)
+ {
+ _findRequired= true;
+ var x = _inputStream.Seek(offset, origin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(_inputStream);
+ return x;
+ }
+
+ /// <summary>
+ /// This method always throws a NotSupportedException.
+ /// </summary>
+ /// <param name="value">ignored</param>
+ public override void SetLength(long value)
+ {
+ throw new NotSupportedException();
+ }
+
+
+ private Stream _inputStream;
+ private System.Text.Encoding _provisionalAlternateEncoding;
+ private ZipEntry _currentEntry;
+ private bool _firstEntry;
+ private bool _needSetup;
+ private ZipContainer _container;
+ private Ionic.Crc.CrcCalculatorStream _crcStream;
+ private Int64 _LeftToRead;
+ internal String _Password;
+ private Int64 _endOfEntry;
+ private string _name;
+
+ private bool _leaveUnderlyingStreamOpen;
+ private bool _closed;
+ private bool _findRequired;
+ private bool _exceptionPending;
+ }
+
+
+
+}
\ No newline at end of file
--- /dev/null
+// ZipOutputStream.cs
+//
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-July-28 06:34:30>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the ZipOutputStream class, which is a stream metaphor for
+// generating zip files. This class does not depend on Ionic.Zip.ZipFile, but rather
+// stands alongside it as an alternative "container" for ZipEntry. It replicates a
+// subset of the properties, including these:
+//
+// - Comment
+// - Encryption
+// - Password
+// - CodecBufferSize
+// - CompressionLevel
+// - CompressionMethod
+// - EnableZip64 (UseZip64WhenSaving)
+// - IgnoreCase (!CaseSensitiveRetrieval)
+//
+// It adds these novel methods:
+//
+// - PutNextEntry
+//
+//
+// ------------------------------------------------------------------
+//
+
+using System;
+using System.Threading;
+using System.Collections.Generic;
+using System.IO;
+using Ionic.Zip;
+
+namespace Ionic.Zip
+{
+ /// <summary>
+ /// Provides a stream metaphor for generating zip files.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This class writes zip files, as defined in the <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">specification
+ /// for zip files described by PKWare</see>. The compression for this
+ /// implementation is provided by a managed-code version of Zlib, included with
+ /// DotNetZip in the classes in the Ionic.Zlib namespace.
+ /// </para>
+ ///
+ /// <para>
+ /// This class provides an alternative programming model to the one enabled by the
+ /// <see cref="ZipFile"/> class. Use this when creating zip files, as an
+ /// alternative to the <see cref="ZipFile"/> class, when you would like to use a
+ /// <c>Stream</c> type to write the zip file.
+ /// </para>
+ ///
+ /// <para>
+ /// Both the <c>ZipOutputStream</c> class and the <c>ZipFile</c> class can be used
+ /// to create zip files. Both of them support many of the common zip features,
+ /// including Unicode, different compression levels, and ZIP64. They provide
+ /// very similar performance when creating zip files.
+ /// </para>
+ ///
+ /// <para>
+ /// The <c>ZipFile</c> class is generally easier to use than
+ /// <c>ZipOutputStream</c> and should be considered a higher-level interface. For
+ /// example, when creating a zip file via calls to the <c>PutNextEntry()</c> and
+ /// <c>Write()</c> methods on the <c>ZipOutputStream</c> class, the caller is
+ /// responsible for opening the file, reading the bytes from the file, writing
+ /// those bytes into the <c>ZipOutputStream</c>, setting the attributes on the
+ /// <c>ZipEntry</c>, and setting the created, last modified, and last accessed
+ /// timestamps on the zip entry. All of these things are done automatically by a
+ /// call to <see cref="ZipFile.AddFile(string,string)">ZipFile.AddFile()</see>.
+ /// For this reason, the <c>ZipOutputStream</c> is generally recommended for use
+ /// only when your application emits arbitrary data, not necessarily data from a
+ /// filesystem file, directly into a zip file, and does so using a <c>Stream</c>
+ /// metaphor.
+ /// </para>
+ ///
+ /// <para>
+ /// Aside from the differences in programming model, there are other
+ /// differences in capability between the two classes.
+ /// </para>
+ ///
+ /// <list type="bullet">
+ /// <item>
+ /// <c>ZipFile</c> can be used to read and extract zip files, in addition to
+ /// creating zip files. <c>ZipOutputStream</c> cannot read zip files. If you want
+ /// to use a stream to read zip files, check out the <see cref="ZipInputStream"/> class.
+ /// </item>
+ ///
+ /// <item>
+ /// <c>ZipOutputStream</c> does not support the creation of segmented or spanned
+ /// zip files.
+ /// </item>
+ ///
+ /// <item>
+ /// <c>ZipOutputStream</c> cannot produce a self-extracting archive.
+ /// </item>
+ /// </list>
+ ///
+ /// <para>
+ /// Be aware that the <c>ZipOutputStream</c> class implements the <see
+ /// cref="System.IDisposable"/> interface. In order for
+ /// <c>ZipOutputStream</c> to produce a valid zip file, you use use it within
+ /// a using clause (<c>Using</c> in VB), or call the <c>Dispose()</c> method
+ /// explicitly. See the examples for how to employ a using clause.
+ /// </para>
+ ///
+ /// <para>
+ /// Also, a note regarding compression performance: On the desktop .NET
+ /// Framework, DotNetZip can use a multi-threaded compression implementation
+ /// that provides significant speed increases on large files, over 300k or so,
+ /// at the cost of increased memory use at runtime. (The output of the
+ /// compression is almost exactly the same size). But, the multi-threaded
+ /// approach incurs a performance hit on smaller files. There's no way for the
+ /// ZipOutputStream to know whether parallel compression will be beneficial,
+ /// because the ZipOutputStream does not know how much data you will write
+ /// through the stream. You may wish to set the <see
+ /// cref="ParallelDeflateThreshold"/> property to zero, if you are compressing
+ /// large files through <c>ZipOutputStream</c>. This will cause parallel
+ /// compression to be used, always.
+ /// </para>
+ /// </remarks>
+ internal class ZipOutputStream : Stream
+ {
+ /// <summary>
+ /// Create a ZipOutputStream, wrapping an existing stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The <see cref="ZipFile"/> class is generally easier to use when creating
+ /// zip files. The ZipOutputStream offers a different metaphor for creating a
+ /// zip file, based on the <see cref="System.IO.Stream"/> class.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="stream">
+ /// The stream to wrap. It must be writable. This stream will be closed at
+ /// the time the ZipOutputStream is closed.
+ /// </param>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to create a zip file, using the
+ /// ZipOutputStream class.
+ ///
+ /// <code lang="C#">
+ /// private void Zipup()
+ /// {
+ /// if (filesToZip.Count == 0)
+ /// {
+ /// System.Console.WriteLine("Nothing to do.");
+ /// return;
+ /// }
+ ///
+ /// using (var raw = File.Open(_outputFileName, FileMode.Create, FileAccess.ReadWrite ))
+ /// {
+ /// using (var output= new ZipOutputStream(raw))
+ /// {
+ /// output.Password = "VerySecret!";
+ /// output.Encryption = EncryptionAlgorithm.WinZipAes256;
+ ///
+ /// foreach (string inputFileName in filesToZip)
+ /// {
+ /// System.Console.WriteLine("file: {0}", inputFileName);
+ ///
+ /// output.PutNextEntry(inputFileName);
+ /// using (var input = File.Open(inputFileName, FileMode.Open, FileAccess.Read, FileShare.Read | FileShare.Write ))
+ /// {
+ /// byte[] buffer= new byte[2048];
+ /// int n;
+ /// while ((n= input.Read(buffer,0,buffer.Length)) > 0)
+ /// {
+ /// output.Write(buffer,0,n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Private Sub Zipup()
+ /// Dim outputFileName As String = "XmlData.zip"
+ /// Dim filesToZip As String() = Directory.GetFiles(".", "*.xml")
+ /// If (filesToZip.Length = 0) Then
+ /// Console.WriteLine("Nothing to do.")
+ /// Else
+ /// Using raw As FileStream = File.Open(outputFileName, FileMode.Create, FileAccess.ReadWrite)
+ /// Using output As ZipOutputStream = New ZipOutputStream(raw)
+ /// output.Password = "VerySecret!"
+ /// output.Encryption = EncryptionAlgorithm.WinZipAes256
+ /// Dim inputFileName As String
+ /// For Each inputFileName In filesToZip
+ /// Console.WriteLine("file: {0}", inputFileName)
+ /// output.PutNextEntry(inputFileName)
+ /// Using input As FileStream = File.Open(inputFileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)
+ /// Dim n As Integer
+ /// Dim buffer As Byte() = New Byte(2048) {}
+ /// Do While (n = input.Read(buffer, 0, buffer.Length) > 0)
+ /// output.Write(buffer, 0, n)
+ /// Loop
+ /// End Using
+ /// Next
+ /// End Using
+ /// End Using
+ /// End If
+ /// End Sub
+ /// </code>
+ /// </example>
+ public ZipOutputStream(Stream stream) : this(stream, false) { }
+
+
+ /// <summary>
+ /// Create a ZipOutputStream that writes to a filesystem file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// The <see cref="ZipFile"/> class is generally easier to use when creating
+ /// zip files. The ZipOutputStream offers a different metaphor for creating a
+ /// zip file, based on the <see cref="System.IO.Stream"/> class.
+ /// </remarks>
+ ///
+ /// <param name="fileName">
+ /// The name of the zip file to create.
+ /// </param>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to create a zip file, using the
+ /// ZipOutputStream class.
+ ///
+ /// <code lang="C#">
+ /// private void Zipup()
+ /// {
+ /// if (filesToZip.Count == 0)
+ /// {
+ /// System.Console.WriteLine("Nothing to do.");
+ /// return;
+ /// }
+ ///
+ /// using (var output= new ZipOutputStream(outputFileName))
+ /// {
+ /// output.Password = "VerySecret!";
+ /// output.Encryption = EncryptionAlgorithm.WinZipAes256;
+ ///
+ /// foreach (string inputFileName in filesToZip)
+ /// {
+ /// System.Console.WriteLine("file: {0}", inputFileName);
+ ///
+ /// output.PutNextEntry(inputFileName);
+ /// using (var input = File.Open(inputFileName, FileMode.Open, FileAccess.Read,
+ /// FileShare.Read | FileShare.Write ))
+ /// {
+ /// byte[] buffer= new byte[2048];
+ /// int n;
+ /// while ((n= input.Read(buffer,0,buffer.Length)) > 0)
+ /// {
+ /// output.Write(buffer,0,n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Private Sub Zipup()
+ /// Dim outputFileName As String = "XmlData.zip"
+ /// Dim filesToZip As String() = Directory.GetFiles(".", "*.xml")
+ /// If (filesToZip.Length = 0) Then
+ /// Console.WriteLine("Nothing to do.")
+ /// Else
+ /// Using output As ZipOutputStream = New ZipOutputStream(outputFileName)
+ /// output.Password = "VerySecret!"
+ /// output.Encryption = EncryptionAlgorithm.WinZipAes256
+ /// Dim inputFileName As String
+ /// For Each inputFileName In filesToZip
+ /// Console.WriteLine("file: {0}", inputFileName)
+ /// output.PutNextEntry(inputFileName)
+ /// Using input As FileStream = File.Open(inputFileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)
+ /// Dim n As Integer
+ /// Dim buffer As Byte() = New Byte(2048) {}
+ /// Do While (n = input.Read(buffer, 0, buffer.Length) > 0)
+ /// output.Write(buffer, 0, n)
+ /// Loop
+ /// End Using
+ /// Next
+ /// End Using
+ /// End If
+ /// End Sub
+ /// </code>
+ /// </example>
+ public ZipOutputStream(String fileName)
+ {
+ Stream stream = File.Open(fileName, FileMode.Create, FileAccess.ReadWrite, FileShare.None);
+ _Init(stream, false, fileName);
+ }
+
+
+ /// <summary>
+ /// Create a ZipOutputStream.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// See the documentation for the <see
+ /// cref="ZipOutputStream(Stream)">ZipOutputStream(Stream)</see>
+ /// constructor for an example.
+ /// </remarks>
+ ///
+ /// <param name="stream">
+ /// The stream to wrap. It must be writable.
+ /// </param>
+ ///
+ /// <param name="leaveOpen">
+ /// true if the application would like the stream
+ /// to remain open after the <c>ZipOutputStream</c> has been closed.
+ /// </param>
+ public ZipOutputStream(Stream stream, bool leaveOpen)
+ {
+ _Init(stream, leaveOpen, null);
+ }
+
+ private void _Init(Stream stream, bool leaveOpen, string name)
+ {
+ // workitem 9307
+ _outputStream = stream.CanRead ? stream : new CountingStream(stream);
+ CompressionLevel = Ionic.Zlib.CompressionLevel.Default;
+ CompressionMethod = Ionic.Zip.CompressionMethod.Deflate;
+ _encryption = EncryptionAlgorithm.None;
+ _entriesWritten = new Dictionary<String, ZipEntry>(StringComparer.Ordinal);
+ _zip64 = Zip64Option.Never;
+ _leaveUnderlyingStreamOpen = leaveOpen;
+ Strategy = Ionic.Zlib.CompressionStrategy.Default;
+ _name = name ?? "(stream)";
+#if !NETCF
+ ParallelDeflateThreshold = -1L;
+#endif
+ }
+
+
+ /// <summary>Provides a string representation of the instance.</summary>
+ /// <remarks>
+ /// <para>
+ /// This can be useful for debugging purposes.
+ /// </para>
+ /// </remarks>
+ /// <returns>a string representation of the instance.</returns>
+ public override String ToString()
+ {
+ return String.Format ("ZipOutputStream::{0}(leaveOpen({1})))", _name, _leaveUnderlyingStreamOpen);
+ }
+
+
+ /// <summary>
+ /// Sets the password to be used on the <c>ZipOutputStream</c> instance.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// When writing a zip archive, this password is applied to the entries, not
+ /// to the zip archive itself. It applies to any <c>ZipEntry</c> subsequently
+ /// written to the <c>ZipOutputStream</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// Using a password does not encrypt or protect the "directory" of the
+ /// archive - the list of entries contained in the archive. If you set the
+ /// <c>Password</c> property, the password actually applies to individual
+ /// entries that are added to the archive, subsequent to the setting of this
+ /// property. The list of filenames in the archive that is eventually created
+ /// will appear in clear text, but the contents of the individual files are
+ /// encrypted. This is how Zip encryption works.
+ /// </para>
+ ///
+ /// <para>
+ /// If you set this property, and then add a set of entries to the archive via
+ /// calls to <c>PutNextEntry</c>, then each entry is encrypted with that
+ /// password. You may also want to change the password between adding
+ /// different entries. If you set the password, add an entry, then set the
+ /// password to <c>null</c> (<c>Nothing</c> in VB), and add another entry, the
+ /// first entry is encrypted and the second is not.
+ /// </para>
+ ///
+ /// <para>
+ /// When setting the <c>Password</c>, you may also want to explicitly set the <see
+ /// cref="Encryption"/> property, to specify how to encrypt the entries added
+ /// to the ZipFile. If you set the <c>Password</c> to a non-null value and do not
+ /// set <see cref="Encryption"/>, then PKZip 2.0 ("Weak") encryption is used.
+ /// This encryption is relatively weak but is very interoperable. If
+ /// you set the password to a <c>null</c> value (<c>Nothing</c> in VB),
+ /// <c>Encryption</c> is reset to None.
+ /// </para>
+ ///
+ /// <para>
+ /// Special case: if you wrap a ZipOutputStream around a non-seekable stream,
+ /// and use encryption, and emit an entry of zero bytes, the <c>Close()</c> or
+ /// <c>PutNextEntry()</c> following the entry will throw an exception.
+ /// </para>
+ ///
+ /// </remarks>
+ public String Password
+ {
+ set
+ {
+ if (_disposed)
+ {
+ _exceptionPending = true;
+ throw new System.InvalidOperationException("The stream has been closed.");
+ }
+
+ _password = value;
+ if (_password == null)
+ {
+ _encryption = EncryptionAlgorithm.None;
+ }
+ else if (_encryption == EncryptionAlgorithm.None)
+ {
+ _encryption = EncryptionAlgorithm.PkzipWeak;
+ }
+ }
+ }
+
+
+ /// <summary>
+ /// The Encryption to use for entries added to the <c>ZipOutputStream</c>.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The specified Encryption is applied to the entries subsequently
+ /// written to the <c>ZipOutputStream</c> instance.
+ /// </para>
+ ///
+ /// <para>
+ /// If you set this to something other than
+ /// EncryptionAlgorithm.None, you will also need to set the
+ /// <see cref="Password"/> to a non-null, non-empty value in
+ /// order to actually get encryption on the entry.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <seealso cref="Password">ZipOutputStream.Password</seealso>
+ /// <seealso cref="Ionic.Zip.ZipEntry.Encryption">ZipEntry.Encryption</seealso>
+ public EncryptionAlgorithm Encryption
+ {
+ get
+ {
+ return _encryption;
+ }
+ set
+ {
+ if (_disposed)
+ {
+ _exceptionPending = true;
+ throw new System.InvalidOperationException("The stream has been closed.");
+ }
+ if (value == EncryptionAlgorithm.Unsupported)
+ {
+ _exceptionPending = true;
+ throw new InvalidOperationException("You may not set Encryption to that value.");
+ }
+ _encryption = value;
+ }
+ }
+
+
+ /// <summary>
+ /// Size of the work buffer to use for the ZLIB codec during compression.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Setting this may affect performance. For larger files, setting this to a
+ /// larger size may improve performance, but I'm not sure. Sorry, I don't
+ /// currently have good recommendations on how to set it. You can test it if
+ /// you like.
+ /// </remarks>
+ public int CodecBufferSize
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// The compression strategy to use for all entries.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Set the Strategy used by the ZLIB-compatible compressor, when compressing
+ /// data for the entries in the zip archive. Different compression strategies
+ /// work better on different sorts of data. The strategy parameter can affect
+ /// the compression ratio and the speed of compression but not the correctness
+ /// of the compresssion. For more information see <see
+ /// cref="Ionic.Zlib.CompressionStrategy "/>.
+ /// </remarks>
+ public Ionic.Zlib.CompressionStrategy Strategy
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// The type of timestamp attached to the ZipEntry.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Set this in order to specify the kind of timestamp that should be emitted
+ /// into the zip file for each entry.
+ /// </remarks>
+ public ZipEntryTimestamp Timestamp
+ {
+ get
+ {
+ return _timestamp;
+ }
+ set
+ {
+ if (_disposed)
+ {
+ _exceptionPending = true;
+ throw new System.InvalidOperationException("The stream has been closed.");
+ }
+ _timestamp = value;
+ }
+ }
+
+
+ /// <summary>
+ /// Sets the compression level to be used for entries subsequently added to
+ /// the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Varying the compression level used on entries can affect the
+ /// size-vs-speed tradeoff when compression and decompressing data streams
+ /// or files.
+ /// </para>
+ ///
+ /// <para>
+ /// As with some other properties on the <c>ZipOutputStream</c> class, like <see
+ /// cref="Password"/>, and <see cref="Encryption"/>,
+ /// setting this property on a <c>ZipOutputStream</c>
+ /// instance will cause the specified <c>CompressionLevel</c> to be used on all
+ /// <see cref="ZipEntry"/> items that are subsequently added to the
+ /// <c>ZipOutputStream</c> instance.
+ /// </para>
+ ///
+ /// <para>
+ /// If you do not set this property, the default compression level is used,
+ /// which normally gives a good balance of compression efficiency and
+ /// compression speed. In some tests, using <c>BestCompression</c> can
+ /// double the time it takes to compress, while delivering just a small
+ /// increase in compression efficiency. This behavior will vary with the
+ /// type of data you compress. If you are in doubt, just leave this setting
+ /// alone, and accept the default.
+ /// </para>
+ /// </remarks>
+ public Ionic.Zlib.CompressionLevel CompressionLevel
+ {
+ get;
+ set;
+ }
+
+ /// <summary>
+ /// The compression method used on each entry added to the ZipOutputStream.
+ /// </summary>
+ public Ionic.Zip.CompressionMethod CompressionMethod
+ {
+ get;
+ set;
+ }
+
+
+ /// <summary>
+ /// A comment attached to the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// The application sets this property to specify a comment to be embedded
+ /// into the generated zip archive.
+ /// </para>
+ ///
+ /// <para>
+ /// According to <see
+ /// href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">PKWARE's
+ /// zip specification</see>, the comment is not encrypted, even if there is a
+ /// password set on the zip file.
+ /// </para>
+ ///
+ /// <para>
+ /// The specification does not describe how to indicate the encoding used
+ /// on a comment string. Many "compliant" zip tools and libraries use
+ /// IBM437 as the code page for comments; DotNetZip, too, follows that
+ /// practice. On the other hand, there are situations where you want a
+ /// Comment to be encoded with something else, for example using code page
+ /// 950 "Big-5 Chinese". To fill that need, DotNetZip will encode the
+ /// comment following the same procedure it follows for encoding
+ /// filenames: (a) if <see cref="AlternateEncodingUsage"/> is
+ /// <c>Never</c>, it uses the default encoding (IBM437). (b) if <see
+ /// cref="AlternateEncodingUsage"/> is <c>Always</c>, it always uses the
+ /// alternate encoding (<see cref="AlternateEncoding"/>). (c) if <see
+ /// cref="AlternateEncodingUsage"/> is <c>AsNecessary</c>, it uses the
+ /// alternate encoding only if the default encoding is not sufficient for
+ /// encoding the comment - in other words if decoding the result does not
+ /// produce the original string. This decision is taken at the time of
+ /// the call to <c>ZipFile.Save()</c>.
+ /// </para>
+ ///
+ /// </remarks>
+ public string Comment
+ {
+ get { return _comment; }
+ set
+ {
+ if (_disposed)
+ {
+ _exceptionPending = true;
+ throw new System.InvalidOperationException("The stream has been closed.");
+ }
+ _comment = value;
+ }
+ }
+
+
+
+ /// <summary>
+ /// Specify whether to use ZIP64 extensions when saving a zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The default value for the property is <see
+ /// cref="Zip64Option.Never"/>. <see cref="Zip64Option.AsNecessary"/> is
+ /// safest, in the sense that you will not get an Exception if a
+ /// pre-ZIP64 limit is exceeded.
+ /// </para>
+ ///
+ /// <para>
+ /// You must set this property before calling <c>Write()</c>.
+ /// </para>
+ ///
+ /// </remarks>
+ public Zip64Option EnableZip64
+ {
+ get
+ {
+ return _zip64;
+ }
+ set
+ {
+ if (_disposed)
+ {
+ _exceptionPending = true;
+ throw new System.InvalidOperationException("The stream has been closed.");
+ }
+ _zip64 = value;
+ }
+ }
+
+
+ /// <summary>
+ /// Indicates whether ZIP64 extensions were used when saving the zip archive.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// The value is defined only after the <c>ZipOutputStream</c> has been closed.
+ /// </remarks>
+ public bool OutputUsedZip64
+ {
+ get
+ {
+ return _anyEntriesUsedZip64 || _directoryNeededZip64;
+ }
+ }
+
+
+ /// <summary>
+ /// Whether the ZipOutputStream should use case-insensitive comparisons when
+ /// checking for uniqueness of zip entries.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Though the zip specification doesn't prohibit zipfiles with duplicate
+ /// entries, Sane zip files have no duplicates, and the DotNetZip library
+ /// cannot create zip files with duplicate entries. If an application attempts
+ /// to call <see cref="PutNextEntry(String)"/> with a name that duplicates one
+ /// already used within the archive, the library will throw an Exception.
+ /// </para>
+ /// <para>
+ /// This property allows the application to specify whether the
+ /// ZipOutputStream instance considers ordinal case when checking for
+ /// uniqueness of zip entries.
+ /// </para>
+ /// </remarks>
+ public bool IgnoreCase
+ {
+ get
+ {
+ return !_DontIgnoreCase;
+ }
+
+ set
+ {
+ _DontIgnoreCase = !value;
+ }
+
+ }
+
+
+ /// <summary>
+ /// Indicates whether to encode entry filenames and entry comments using
+ /// Unicode (UTF-8).
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// <see href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">The
+ /// PKWare zip specification</see> provides for encoding file names and file
+ /// comments in either the IBM437 code page, or in UTF-8. This flag selects
+ /// the encoding according to that specification. By default, this flag is
+ /// false, and filenames and comments are encoded into the zip file in the
+ /// IBM437 codepage. Setting this flag to true will specify that filenames
+ /// and comments that cannot be encoded with IBM437 will be encoded with
+ /// UTF-8.
+ /// </para>
+ ///
+ /// <para>
+ /// Zip files created with strict adherence to the PKWare specification with
+ /// respect to UTF-8 encoding can contain entries with filenames containing
+ /// any combination of Unicode characters, including the full range of
+ /// characters from Chinese, Latin, Hebrew, Greek, Cyrillic, and many other
+ /// alphabets. However, because at this time, the UTF-8 portion of the PKWare
+ /// specification is not broadly supported by other zip libraries and
+ /// utilities, such zip files may not be readable by your favorite zip tool or
+ /// archiver. In other words, interoperability will decrease if you set this
+ /// flag to true.
+ /// </para>
+ ///
+ /// <para>
+ /// In particular, Zip files created with strict adherence to the PKWare
+ /// specification with respect to UTF-8 encoding will not work well with
+ /// Explorer in Windows XP or Windows Vista, because Windows compressed
+ /// folders, as far as I know, do not support UTF-8 in zip files. Vista can
+ /// read the zip files, but shows the filenames incorrectly. Unpacking from
+ /// Windows Vista Explorer will result in filenames that have rubbish
+ /// characters in place of the high-order UTF-8 bytes.
+ /// </para>
+ ///
+ /// <para>
+ /// Also, zip files that use UTF-8 encoding will not work well with Java
+ /// applications that use the java.util.zip classes, as of v5.0 of the Java
+ /// runtime. The Java runtime does not correctly implement the PKWare
+ /// specification in this regard.
+ /// </para>
+ ///
+ /// <para>
+ /// As a result, we have the unfortunate situation that "correct" behavior by
+ /// the DotNetZip library with regard to Unicode encoding of filenames during
+ /// zip creation will result in zip files that are readable by strictly
+ /// compliant and current tools (for example the most recent release of the
+ /// commercial WinZip tool); but these zip files will not be readable by
+ /// various other tools or libraries, including Windows Explorer.
+ /// </para>
+ ///
+ /// <para>
+ /// The DotNetZip library can read and write zip files with UTF8-encoded
+ /// entries, according to the PKware spec. If you use DotNetZip for both
+ /// creating and reading the zip file, and you use UTF-8, there will be no
+ /// loss of information in the filenames. For example, using a self-extractor
+ /// created by this library will allow you to unpack files correctly with no
+ /// loss of information in the filenames.
+ /// </para>
+ ///
+ /// <para>
+ /// If you do not set this flag, it will remain false. If this flag is false,
+ /// the <c>ZipOutputStream</c> will encode all filenames and comments using
+ /// the IBM437 codepage. This can cause "loss of information" on some
+ /// filenames, but the resulting zipfile will be more interoperable with other
+ /// utilities. As an example of the loss of information, diacritics can be
+ /// lost. The o-tilde character will be down-coded to plain o. The c with a
+ /// cedilla (Unicode 0xE7) used in Portugese will be downcoded to a c.
+ /// Likewise, the O-stroke character (Unicode 248), used in Danish and
+ /// Norwegian, will be down-coded to plain o. Chinese characters cannot be
+ /// represented in codepage IBM437; when using the default encoding, Chinese
+ /// characters in filenames will be represented as ?. These are all examples
+ /// of "information loss".
+ /// </para>
+ ///
+ /// <para>
+ /// The loss of information associated to the use of the IBM437 encoding is
+ /// inconvenient, and can also lead to runtime errors. For example, using
+ /// IBM437, any sequence of 4 Chinese characters will be encoded as ????. If
+ /// your application creates a <c>ZipOutputStream</c>, does not set the
+ /// encoding, then adds two files, each with names of four Chinese characters
+ /// each, this will result in a duplicate filename exception. In the case
+ /// where you add a single file with a name containing four Chinese
+ /// characters, the zipfile will save properly, but extracting that file
+ /// later, with any zip tool, will result in an error, because the question
+ /// mark is not legal for use within filenames on Windows. These are just a
+ /// few examples of the problems associated to loss of information.
+ /// </para>
+ ///
+ /// <para>
+ /// This flag is independent of the encoding of the content within the entries
+ /// in the zip file. Think of the zip file as a container - it supports an
+ /// encoding. Within the container are other "containers" - the file entries
+ /// themselves. The encoding within those entries is independent of the
+ /// encoding of the zip archive container for those entries.
+ /// </para>
+ ///
+ /// <para>
+ /// Rather than specify the encoding in a binary fashion using this flag, an
+ /// application can specify an arbitrary encoding via the <see
+ /// cref="ProvisionalAlternateEncoding"/> property. Setting the encoding
+ /// explicitly when creating zip archives will result in non-compliant zip
+ /// files that, curiously, are fairly interoperable. The challenge is, the
+ /// PKWare specification does not provide for a way to specify that an entry
+ /// in a zip archive uses a code page that is neither IBM437 nor UTF-8.
+ /// Therefore if you set the encoding explicitly when creating a zip archive,
+ /// you must take care upon reading the zip archive to use the same code page.
+ /// If you get it wrong, the behavior is undefined and may result in incorrect
+ /// filenames, exceptions, stomach upset, hair loss, and acne.
+ /// </para>
+ /// </remarks>
+ /// <seealso cref="ProvisionalAlternateEncoding"/>
+ [Obsolete("Beginning with v1.9.1.6 of DotNetZip, this property is obsolete. It will be removed in a future version of the library. Use AlternateEncoding and AlternateEncodingUsage instead.")]
+ public bool UseUnicodeAsNecessary
+ {
+ get
+ {
+ return (_alternateEncoding == System.Text.Encoding.UTF8) &&
+ (AlternateEncodingUsage == ZipOption.AsNecessary);
+ }
+ set
+ {
+ if (value)
+ {
+ _alternateEncoding = System.Text.Encoding.UTF8;
+ _alternateEncodingUsage = ZipOption.AsNecessary;
+
+ }
+ else
+ {
+ _alternateEncoding = Ionic.Zip.ZipOutputStream.DefaultEncoding;
+ _alternateEncodingUsage = ZipOption.Never;
+ }
+ }
+ }
+
+
+ /// <summary>
+ /// The text encoding to use when emitting entries into the zip archive, for
+ /// those entries whose filenames or comments cannot be encoded with the
+ /// default (IBM437) encoding.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// In <see href="http://www.pkware.com/documents/casestudies/APPNOTE.TXT">its
+ /// zip specification</see>, PKWare describes two options for encoding
+ /// filenames and comments: using IBM437 or UTF-8. But, some archiving tools
+ /// or libraries do not follow the specification, and instead encode
+ /// characters using the system default code page. For example, WinRAR when
+ /// run on a machine in Shanghai may encode filenames with the Big-5 Chinese
+ /// (950) code page. This behavior is contrary to the Zip specification, but
+ /// it occurs anyway.
+ /// </para>
+ ///
+ /// <para>
+ /// When using DotNetZip to write zip archives that will be read by one of
+ /// these other archivers, set this property to specify the code page to use
+ /// when encoding the <see cref="ZipEntry.FileName"/> and <see
+ /// cref="ZipEntry.Comment"/> for each <c>ZipEntry</c> in the zip file, for
+ /// values that cannot be encoded with the default codepage for zip files,
+ /// IBM437. This is why this property is "provisional". In all cases, IBM437
+ /// is used where possible, in other words, where no loss of data would
+ /// result. It is possible, therefore, to have a given entry with a
+ /// <c>Comment</c> encoded in IBM437 and a <c>FileName</c> encoded with the
+ /// specified "provisional" codepage.
+ /// </para>
+ ///
+ /// <para>
+ /// Be aware that a zip file created after you've explicitly set the
+ /// <c>ProvisionalAlternateEncoding</c> property to a value other than
+ /// IBM437 may not be compliant to the PKWare specification, and may not be
+ /// readable by compliant archivers. On the other hand, many (most?)
+ /// archivers are non-compliant and can read zip files created in arbitrary
+ /// code pages. The trick is to use or specify the proper codepage when
+ /// reading the zip.
+ /// </para>
+ ///
+ /// <para>
+ /// When creating a zip archive using this library, it is possible to change
+ /// the value of <c>ProvisionalAlternateEncoding</c> between each entry you
+ /// add, and between adding entries and the call to <c>Close()</c>. Don't do
+ /// this. It will likely result in a zipfile that is not readable. For best
+ /// interoperability, either leave <c>ProvisionalAlternateEncoding</c>
+ /// alone, or specify it only once, before adding any entries to the
+ /// <c>ZipOutputStream</c> instance. There is one exception to this
+ /// recommendation, described later.
+ /// </para>
+ ///
+ /// <para>
+ /// When using an arbitrary, non-UTF8 code page for encoding, there is no
+ /// standard way for the creator application - whether DotNetZip, WinZip,
+ /// WinRar, or something else - to formally specify in the zip file which
+ /// codepage has been used for the entries. As a result, readers of zip files
+ /// are not able to inspect the zip file and determine the codepage that was
+ /// used for the entries contained within it. It is left to the application
+ /// or user to determine the necessary codepage when reading zip files encoded
+ /// this way. If you use an incorrect codepage when reading a zipfile, you
+ /// will get entries with filenames that are incorrect, and the incorrect
+ /// filenames may even contain characters that are not legal for use within
+ /// filenames in Windows. Extracting entries with illegal characters in the
+ /// filenames will lead to exceptions. It's too bad, but this is just the way
+ /// things are with code pages in zip files. Caveat Emptor.
+ /// </para>
+ ///
+ /// <para>
+ /// One possible approach for specifying the code page for a given zip file is
+ /// to describe the code page in a human-readable form in the Zip comment. For
+ /// example, the comment may read "Entries in this archive are encoded in the
+ /// Big5 code page". For maximum interoperability, the zip comment in this
+ /// case should be encoded in the default, IBM437 code page. In this case,
+ /// the zip comment is encoded using a different page than the filenames. To
+ /// do this, Specify <c>ProvisionalAlternateEncoding</c> to your desired
+ /// region-specific code page, once before adding any entries, and then set
+ /// the <see cref="Comment"/> property and reset
+ /// <c>ProvisionalAlternateEncoding</c> to IBM437 before calling <c>Close()</c>.
+ /// </para>
+ /// </remarks>
+ [Obsolete("use AlternateEncoding and AlternateEncodingUsage instead.")]
+ public System.Text.Encoding ProvisionalAlternateEncoding
+ {
+ get
+ {
+ if (_alternateEncodingUsage == ZipOption.AsNecessary)
+ return _alternateEncoding;
+ return null;
+ }
+ set
+ {
+ _alternateEncoding = value;
+ _alternateEncodingUsage = ZipOption.AsNecessary;
+ }
+ }
+
+ /// <summary>
+ /// A Text Encoding to use when encoding the filenames and comments for
+ /// all the ZipEntry items, during a ZipFile.Save() operation.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// Whether the encoding specified here is used during the save depends
+ /// on <see cref="AlternateEncodingUsage"/>.
+ /// </para>
+ /// </remarks>
+ public System.Text.Encoding AlternateEncoding
+ {
+ get
+ {
+ return _alternateEncoding;
+ }
+ set
+ {
+ _alternateEncoding = value;
+ }
+ }
+
+ /// <summary>
+ /// A flag that tells if and when this instance should apply
+ /// AlternateEncoding to encode the filenames and comments associated to
+ /// of ZipEntry objects contained within this instance.
+ /// </summary>
+ public ZipOption AlternateEncodingUsage
+ {
+ get
+ {
+ return _alternateEncodingUsage;
+ }
+ set
+ {
+ _alternateEncodingUsage = value;
+ }
+ }
+
+ /// <summary>
+ /// The default text encoding used in zip archives. It is numeric 437, also
+ /// known as IBM437.
+ /// </summary>
+ /// <seealso cref="Ionic.Zip.ZipFile.ProvisionalAlternateEncoding"/>
+ internal static System.Text.Encoding DefaultEncoding
+ {
+ get
+ {
+ return System.Text.Encoding.GetEncoding("IBM437");
+ }
+ }
+
+
+#if !NETCF
+ /// <summary>
+ /// The size threshold for an entry, above which a parallel deflate is used.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// DotNetZip will use multiple threads to compress any ZipEntry, when
+ /// the <c>CompressionMethod</c> is Deflate, and if the entry is
+ /// larger than the given size. Zero means "always use parallel
+ /// deflate", while -1 means "never use parallel deflate".
+ /// </para>
+ ///
+ /// <para>
+ /// If the entry size cannot be known before compression, as with any entry
+ /// added via a ZipOutputStream, then Parallel deflate will never be
+ /// performed, unless the value of this property is zero.
+ /// </para>
+ ///
+ /// <para>
+ /// A parallel deflate operations will speed up the compression of
+ /// large files, on computers with multiple CPUs or multiple CPU
+ /// cores. For files above 1mb, on a dual core or dual-cpu (2p)
+ /// machine, the time required to compress the file can be 70% of the
+ /// single-threaded deflate. For very large files on 4p machines the
+ /// compression can be done in 30% of the normal time. The downside
+ /// is that parallel deflate consumes extra memory during the deflate,
+ /// and the deflation is slightly less effective.
+ /// </para>
+ ///
+ /// <para>
+ /// Parallel deflate tends to not be as effective as single-threaded deflate
+ /// because the original data stream is split into multiple independent
+ /// buffers, each of which is compressed in parallel. But because they are
+ /// treated independently, there is no opportunity to share compression
+ /// dictionaries, and additional framing bytes must be added to the output
+ /// stream. For that reason, a deflated stream may be slightly larger when
+ /// compressed using parallel deflate, as compared to a traditional
+ /// single-threaded deflate. For files of about 512k, the increase over the
+ /// normal deflate is as much as 5% of the total compressed size. For larger
+ /// files, the difference can be as small as 0.1%.
+ /// </para>
+ ///
+ /// <para>
+ /// Multi-threaded compression does not give as much an advantage when using
+ /// Encryption. This is primarily because encryption tends to slow down
+ /// the entire pipeline. Also, multi-threaded compression gives less of an
+ /// advantage when using lower compression levels, for example <see
+ /// cref="Ionic.Zlib.CompressionLevel.BestSpeed"/>. You may have to perform
+ /// some tests to determine the best approach for your situation.
+ /// </para>
+ ///
+ /// <para>
+ /// The default value for this property is -1, which means parallel
+ /// compression will not be performed unless you set it to zero.
+ /// </para>
+ ///
+ /// </remarks>
+ public long ParallelDeflateThreshold
+ {
+ set
+ {
+ if ((value != 0) && (value != -1) && (value < 64 * 1024))
+ throw new ArgumentOutOfRangeException("value must be greater than 64k, or 0, or -1");
+ _ParallelDeflateThreshold = value;
+ }
+ get
+ {
+ return _ParallelDeflateThreshold;
+ }
+ }
+
+
+ /// <summary>
+ /// The maximum number of buffer pairs to use when performing
+ /// parallel compression.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This property sets an upper limit on the number of memory
+ /// buffer pairs to create when performing parallel
+ /// compression. The implementation of the parallel
+ /// compression stream allocates multiple buffers to
+ /// facilitate parallel compression. As each buffer fills up,
+ /// the stream uses <see
+ /// cref="System.Threading.ThreadPool.QueueUserWorkItem(WaitCallback)">
+ /// ThreadPool.QueueUserWorkItem()</see> to compress those
+ /// buffers in a background threadpool thread. After a buffer
+ /// is compressed, it is re-ordered and written to the output
+ /// stream.
+ /// </para>
+ ///
+ /// <para>
+ /// A higher number of buffer pairs enables a higher degree of
+ /// parallelism, which tends to increase the speed of compression on
+ /// multi-cpu computers. On the other hand, a higher number of buffer
+ /// pairs also implies a larger memory consumption, more active worker
+ /// threads, and a higher cpu utilization for any compression. This
+ /// property enables the application to limit its memory consumption and
+ /// CPU utilization behavior depending on requirements.
+ /// </para>
+ ///
+ /// <para>
+ /// For each compression "task" that occurs in parallel, there are 2
+ /// buffers allocated: one for input and one for output. This property
+ /// sets a limit for the number of pairs. The total amount of storage
+ /// space allocated for buffering will then be (N*S*2), where N is the
+ /// number of buffer pairs, S is the size of each buffer (<see
+ /// cref="CodecBufferSize"/>). By default, DotNetZip allocates 4 buffer
+ /// pairs per CPU core, so if your machine has 4 cores, and you retain
+ /// the default buffer size of 128k, then the
+ /// ParallelDeflateOutputStream will use 4 * 4 * 2 * 128kb of buffer
+ /// memory in total, or 4mb, in blocks of 128kb. If you then set this
+ /// property to 8, then the number will be 8 * 2 * 128kb of buffer
+ /// memory, or 2mb.
+ /// </para>
+ ///
+ /// <para>
+ /// CPU utilization will also go up with additional buffers, because a
+ /// larger number of buffer pairs allows a larger number of background
+ /// threads to compress in parallel. If you find that parallel
+ /// compression is consuming too much memory or CPU, you can adjust this
+ /// value downward.
+ /// </para>
+ ///
+ /// <para>
+ /// The default value is 16. Different values may deliver better or
+ /// worse results, depending on your priorities and the dynamic
+ /// performance characteristics of your storage and compute resources.
+ /// </para>
+ ///
+ /// <para>
+ /// This property is not the number of buffer pairs to use; it is an
+ /// upper limit. An illustration: Suppose you have an application that
+ /// uses the default value of this property (which is 16), and it runs
+ /// on a machine with 2 CPU cores. In that case, DotNetZip will allocate
+ /// 4 buffer pairs per CPU core, for a total of 8 pairs. The upper
+ /// limit specified by this property has no effect.
+ /// </para>
+ ///
+ /// <para>
+ /// The application can set this value at any time, but it is
+ /// effective only if set before calling
+ /// <c>ZipOutputStream.Write()</c> for the first time.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <seealso cref="ParallelDeflateThreshold"/>
+ ///
+ public int ParallelDeflateMaxBufferPairs
+ {
+ get
+ {
+ return _maxBufferPairs;
+ }
+ set
+ {
+ if (value < 4)
+ throw new ArgumentOutOfRangeException("ParallelDeflateMaxBufferPairs",
+ "Value must be 4 or greater.");
+ _maxBufferPairs = value;
+ }
+ }
+#endif
+
+
+ private void InsureUniqueEntry(ZipEntry ze1)
+ {
+ if (_entriesWritten.ContainsKey(ze1.FileName))
+ {
+ _exceptionPending = true;
+ throw new ArgumentException(String.Format("The entry '{0}' already exists in the zip archive.", ze1.FileName));
+ }
+ }
+
+
+ internal Stream OutputStream
+ {
+ get
+ {
+ return _outputStream;
+ }
+ }
+
+ internal String Name
+ {
+ get
+ {
+ return _name;
+ }
+ }
+
+ /// <summary>
+ /// Returns true if an entry by the given name has already been written
+ /// to the ZipOutputStream.
+ /// </summary>
+ ///
+ /// <param name="name">
+ /// The name of the entry to scan for.
+ /// </param>
+ ///
+ /// <returns>
+ /// true if an entry by the given name has already been written.
+ /// </returns>
+ public bool ContainsEntry(string name)
+ {
+ return _entriesWritten.ContainsKey(SharedUtilities.NormalizePathForUseInZipFile(name));
+ }
+
+
+ /// <summary>
+ /// Write the data from the buffer to the stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// As the application writes data into this stream, the data may be
+ /// compressed and encrypted before being written out to the underlying
+ /// stream, depending on the settings of the <see cref="CompressionLevel"/>
+ /// and the <see cref="Encryption"/> properties.
+ /// </remarks>
+ ///
+ /// <param name="buffer">The buffer holding data to write to the stream.</param>
+ /// <param name="offset">the offset within that data array to find the first byte to write.</param>
+ /// <param name="count">the number of bytes to write.</param>
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ if (_disposed)
+ {
+ _exceptionPending = true;
+ throw new System.InvalidOperationException("The stream has been closed.");
+ }
+
+ if (buffer==null)
+ {
+ _exceptionPending = true;
+ throw new System.ArgumentNullException("buffer");
+ }
+
+ if (_currentEntry == null)
+ {
+ _exceptionPending = true;
+ throw new System.InvalidOperationException("You must call PutNextEntry() before calling Write().");
+ }
+
+ if (_currentEntry.IsDirectory)
+ {
+ _exceptionPending = true;
+ throw new System.InvalidOperationException("You cannot Write() data for an entry that is a directory.");
+ }
+
+ if (_needToWriteEntryHeader)
+ _InitiateCurrentEntry(false);
+
+ if (count != 0)
+ _entryOutputStream.Write(buffer, offset, count);
+ }
+
+
+
+ /// <summary>
+ /// Specify the name of the next entry that will be written to the zip file.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// Call this method just before calling <see cref="Write(byte[], int, int)"/>, to
+ /// specify the name of the entry that the next set of bytes written to
+ /// the <c>ZipOutputStream</c> belongs to. All subsequent calls to <c>Write</c>,
+ /// until the next call to <c>PutNextEntry</c>,
+ /// will be inserted into the named entry in the zip file.
+ /// </para>
+ ///
+ /// <para>
+ /// If the <paramref name="entryName"/> used in <c>PutNextEntry()</c> ends in
+ /// a slash, then the entry added is marked as a directory. Because directory
+ /// entries do not contain data, a call to <c>Write()</c>, before an
+ /// intervening additional call to <c>PutNextEntry()</c>, will throw an
+ /// exception.
+ /// </para>
+ ///
+ /// <para>
+ /// If you don't call <c>Write()</c> between two calls to
+ /// <c>PutNextEntry()</c>, the first entry is inserted into the zip file as a
+ /// file of zero size. This may be what you want.
+ /// </para>
+ ///
+ /// <para>
+ /// Because <c>PutNextEntry()</c> closes out the prior entry, if any, this
+ /// method may throw if there is a problem with the prior entry.
+ /// </para>
+ ///
+ /// <para>
+ /// This method returns the <c>ZipEntry</c>. You can modify public properties
+ /// on the <c>ZipEntry</c>, such as <see cref="ZipEntry.Encryption"/>, <see
+ /// cref="ZipEntry.Password"/>, and so on, until the first call to
+ /// <c>ZipOutputStream.Write()</c>, or until the next call to
+ /// <c>PutNextEntry()</c>. If you modify the <c>ZipEntry</c> <em>after</em>
+ /// having called <c>Write()</c>, you may get a runtime exception, or you may
+ /// silently get an invalid zip archive.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to create a zip file, using the
+ /// <c>ZipOutputStream</c> class.
+ ///
+ /// <code>
+ /// private void Zipup()
+ /// {
+ /// using (FileStream fs raw = File.Open(_outputFileName, FileMode.Create, FileAccess.ReadWrite ))
+ /// {
+ /// using (var output= new ZipOutputStream(fs))
+ /// {
+ /// output.Password = "VerySecret!";
+ /// output.Encryption = EncryptionAlgorithm.WinZipAes256;
+ /// output.PutNextEntry("entry1.txt");
+ /// byte[] buffer= System.Text.Encoding.ASCII.GetBytes("This is the content for entry #1.");
+ /// output.Write(buffer,0,buffer.Length);
+ /// output.PutNextEntry("entry2.txt"); // this will be zero length
+ /// output.PutNextEntry("entry3.txt");
+ /// buffer= System.Text.Encoding.ASCII.GetBytes("This is the content for entry #3.");
+ /// output.Write(buffer,0,buffer.Length);
+ /// }
+ /// }
+ /// }
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="entryName">
+ /// The name of the entry to be added, including any path to be used
+ /// within the zip file.
+ /// </param>
+ ///
+ /// <returns>
+ /// The ZipEntry created.
+ /// </returns>
+ ///
+ public ZipEntry PutNextEntry(String entryName)
+ {
+ if (String.IsNullOrEmpty(entryName))
+ throw new ArgumentNullException("entryName");
+
+ if (_disposed)
+ {
+ _exceptionPending = true;
+ throw new System.InvalidOperationException("The stream has been closed.");
+ }
+
+ _FinishCurrentEntry();
+ _currentEntry = ZipEntry.CreateForZipOutputStream(entryName);
+ _currentEntry._container = new ZipContainer(this);
+ _currentEntry._BitField |= 0x0008; // workitem 8932
+ _currentEntry.SetEntryTimes(DateTime.Now, DateTime.Now, DateTime.Now);
+ _currentEntry.CompressionLevel = this.CompressionLevel;
+ _currentEntry.CompressionMethod = this.CompressionMethod;
+ _currentEntry.Password = _password; // workitem 13909
+ _currentEntry.Encryption = this.Encryption;
+ // workitem 12634
+ _currentEntry.AlternateEncoding = this.AlternateEncoding;
+ _currentEntry.AlternateEncodingUsage = this.AlternateEncodingUsage;
+
+ if (entryName.EndsWith("/")) _currentEntry.MarkAsDirectory();
+
+ _currentEntry.EmitTimesInWindowsFormatWhenSaving = ((_timestamp & ZipEntryTimestamp.Windows) != 0);
+ _currentEntry.EmitTimesInUnixFormatWhenSaving = ((_timestamp & ZipEntryTimestamp.Unix) != 0);
+ InsureUniqueEntry(_currentEntry);
+ _needToWriteEntryHeader = true;
+
+ return _currentEntry;
+ }
+
+
+
+ private void _InitiateCurrentEntry(bool finishing)
+ {
+ // If finishing==true, this means we're initiating the entry at the time of
+ // Close() or PutNextEntry(). If this happens, it means no data was written
+ // for the entry - Write() was never called. (The usual case us to call
+ // _InitiateCurrentEntry(bool) from within Write().) If finishing==true,
+ // the entry could be either a zero-byte file or a directory.
+
+ _entriesWritten.Add(_currentEntry.FileName,_currentEntry);
+ _entryCount++; // could use _entriesWritten.Count, but I don't want to incur
+ // the cost.
+
+ if (_entryCount > 65534 && _zip64 == Zip64Option.Never)
+ {
+ _exceptionPending = true;
+ throw new System.InvalidOperationException("Too many entries. Consider setting ZipOutputStream.EnableZip64.");
+ }
+
+ // Write out the header.
+ //
+ // If finishing, and encryption is in use, then we don't want to emit the
+ // normal encryption header. Signal that with a cycle=99 to turn off
+ // encryption for zero-byte entries or directories.
+ //
+ // If finishing, then we know the stream length is zero. Else, unknown
+ // stream length. Passing stream length == 0 allows an optimization so as
+ // not to setup an encryption or deflation stream, when stream length is
+ // zero.
+
+ _currentEntry.WriteHeader(_outputStream, finishing ? 99 : 0);
+ _currentEntry.StoreRelativeOffset();
+
+ if (!_currentEntry.IsDirectory)
+ {
+ _currentEntry.WriteSecurityMetadata(_outputStream);
+ _currentEntry.PrepOutputStream(_outputStream,
+ finishing ? 0 : -1,
+ out _outputCounter,
+ out _encryptor,
+ out _deflater,
+ out _entryOutputStream);
+ }
+ _needToWriteEntryHeader = false;
+ }
+
+
+
+ private void _FinishCurrentEntry()
+ {
+ if (_currentEntry != null)
+ {
+ if (_needToWriteEntryHeader)
+ _InitiateCurrentEntry(true); // an empty entry - no writes
+
+ _currentEntry.FinishOutputStream(_outputStream, _outputCounter, _encryptor, _deflater, _entryOutputStream);
+ _currentEntry.PostProcessOutput(_outputStream);
+ // workitem 12964
+ if (_currentEntry.OutputUsedZip64!=null)
+ _anyEntriesUsedZip64 |= _currentEntry.OutputUsedZip64.Value;
+
+ // reset all the streams
+ _outputCounter = null; _encryptor = _deflater = null; _entryOutputStream = null;
+ }
+ }
+
+
+
+ /// <summary>
+ /// Dispose the stream
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This method writes the Zip Central directory, then closes the stream. The
+ /// application must call Dispose() (or Close) in order to produce a valid zip file.
+ /// </para>
+ ///
+ /// <para>
+ /// Typically the application will call <c>Dispose()</c> implicitly, via a <c>using</c>
+ /// statement in C#, or a <c>Using</c> statement in VB.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="disposing">set this to true, always.</param>
+ protected override void Dispose(bool disposing)
+ {
+ if (_disposed) return;
+
+ if (disposing) // not called from finalizer
+ {
+ // handle pending exceptions
+ if (!_exceptionPending)
+ {
+ _FinishCurrentEntry();
+ _directoryNeededZip64 = ZipOutput.WriteCentralDirectoryStructure(_outputStream,
+ _entriesWritten.Values,
+ 1, // _numberOfSegmentsForMostRecentSave,
+ _zip64,
+ Comment,
+ new ZipContainer(this));
+ Stream wrappedStream = null;
+ CountingStream cs = _outputStream as CountingStream;
+ if (cs != null)
+ {
+ wrappedStream = cs.WrappedStream;
+#if NETCF
+ cs.Close();
+#else
+ cs.Dispose();
+#endif
+ }
+ else
+ {
+ wrappedStream = _outputStream;
+ }
+
+ if (!_leaveUnderlyingStreamOpen)
+ {
+#if NETCF
+ wrappedStream.Close();
+#else
+ wrappedStream.Dispose();
+#endif
+ }
+ _outputStream = null;
+ }
+ }
+ _disposed = true;
+ }
+
+
+
+ /// <summary>
+ /// Always returns false.
+ /// </summary>
+ public override bool CanRead { get { return false; } }
+
+ /// <summary>
+ /// Always returns false.
+ /// </summary>
+ public override bool CanSeek { get { return false; } }
+
+ /// <summary>
+ /// Always returns true.
+ /// </summary>
+ public override bool CanWrite { get { return true; } }
+
+ /// <summary>
+ /// Always returns a NotSupportedException.
+ /// </summary>
+ public override long Length { get { throw new NotSupportedException(); } }
+
+ /// <summary>
+ /// Setting this property always returns a NotSupportedException. Getting it
+ /// returns the value of the Position on the underlying stream.
+ /// </summary>
+ public override long Position
+ {
+ get { return _outputStream.Position; }
+ set { throw new NotSupportedException(); }
+ }
+
+ /// <summary>
+ /// This is a no-op.
+ /// </summary>
+ public override void Flush() { }
+
+ /// <summary>
+ /// This method always throws a NotSupportedException.
+ /// </summary>
+ /// <param name="buffer">ignored</param>
+ /// <param name="offset">ignored</param>
+ /// <param name="count">ignored</param>
+ /// <returns>nothing</returns>
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ throw new NotSupportedException("Read");
+ }
+
+ /// <summary>
+ /// This method always throws a NotSupportedException.
+ /// </summary>
+ /// <param name="offset">ignored</param>
+ /// <param name="origin">ignored</param>
+ /// <returns>nothing</returns>
+ public override long Seek(long offset, SeekOrigin origin)
+ {
+ throw new NotSupportedException("Seek");
+ }
+
+ /// <summary>
+ /// This method always throws a NotSupportedException.
+ /// </summary>
+ /// <param name="value">ignored</param>
+ public override void SetLength(long value)
+ {
+ throw new NotSupportedException();
+ }
+
+
+ private EncryptionAlgorithm _encryption;
+ private ZipEntryTimestamp _timestamp;
+ internal String _password;
+ private String _comment;
+ private Stream _outputStream;
+ private ZipEntry _currentEntry;
+ internal Zip64Option _zip64;
+ private Dictionary<String, ZipEntry> _entriesWritten;
+ private int _entryCount;
+ private ZipOption _alternateEncodingUsage = ZipOption.Never;
+ private System.Text.Encoding _alternateEncoding
+ = System.Text.Encoding.GetEncoding("IBM437"); // default = IBM437
+
+ private bool _leaveUnderlyingStreamOpen;
+ private bool _disposed;
+ private bool _exceptionPending; // **see note below
+ private bool _anyEntriesUsedZip64, _directoryNeededZip64;
+ private CountingStream _outputCounter;
+ private Stream _encryptor;
+ private Stream _deflater;
+ private Ionic.Crc.CrcCalculatorStream _entryOutputStream;
+ private bool _needToWriteEntryHeader;
+ private string _name;
+ private bool _DontIgnoreCase;
+#if !NETCF
+ internal Ionic.Zlib.ParallelDeflateOutputStream ParallelDeflater;
+ private long _ParallelDeflateThreshold;
+ private int _maxBufferPairs = 16;
+#endif
+
+ // **Note regarding exceptions:
+
+ // When ZipOutputStream is employed within a using clause, which
+ // is the typical scenario, and an exception is thrown within
+ // the scope of the using, Close()/Dispose() is invoked
+ // implicitly before processing the initial exception. In that
+ // case, _exceptionPending is true, and we don't want to try to
+ // write anything in the Close/Dispose logic. Doing so can
+ // cause additional exceptions that mask the original one. So,
+ // the _exceptionPending flag is used to track that, and to
+ // allow the original exception to be propagated to the
+ // application without extra "noise."
+
+ }
+
+
+
+ internal class ZipContainer
+ {
+ private ZipFile _zf;
+ private ZipOutputStream _zos;
+ private ZipInputStream _zis;
+
+ public ZipContainer(Object o)
+ {
+ _zf = (o as ZipFile);
+ _zos = (o as ZipOutputStream);
+ _zis = (o as ZipInputStream);
+ }
+
+ public ZipFile ZipFile
+ {
+ get { return _zf; }
+ }
+
+ public ZipOutputStream ZipOutputStream
+ {
+ get { return _zos; }
+ }
+
+ public string Name
+ {
+ get
+ {
+ if (_zf != null) return _zf.Name;
+ if (_zis != null) throw new NotSupportedException();
+ return _zos.Name;
+ }
+ }
+
+ public string Password
+ {
+ get
+ {
+ if (_zf != null) return _zf._Password;
+ if (_zis != null) return _zis._Password;
+ return _zos._password;
+ }
+ }
+
+ public Zip64Option Zip64
+ {
+ get
+ {
+ if (_zf != null) return _zf._zip64;
+ if (_zis != null) throw new NotSupportedException();
+ return _zos._zip64;
+ }
+ }
+
+ public int BufferSize
+ {
+ get
+ {
+ if (_zf != null) return _zf.BufferSize;
+ if (_zis != null) throw new NotSupportedException();
+ return 0;
+ }
+ }
+
+#if !NETCF
+ public Ionic.Zlib.ParallelDeflateOutputStream ParallelDeflater
+ {
+ get
+ {
+ if (_zf != null) return _zf.ParallelDeflater;
+ if (_zis != null) return null;
+ return _zos.ParallelDeflater;
+ }
+ set
+ {
+ if (_zf != null) _zf.ParallelDeflater = value;
+ else if (_zos != null) _zos.ParallelDeflater = value;
+ }
+ }
+
+ public long ParallelDeflateThreshold
+ {
+ get
+ {
+ if (_zf != null) return _zf.ParallelDeflateThreshold;
+ return _zos.ParallelDeflateThreshold;
+ }
+ }
+ public int ParallelDeflateMaxBufferPairs
+ {
+ get
+ {
+ if (_zf != null) return _zf.ParallelDeflateMaxBufferPairs;
+ return _zos.ParallelDeflateMaxBufferPairs;
+ }
+ }
+#endif
+
+ public int CodecBufferSize
+ {
+ get
+ {
+ if (_zf != null) return _zf.CodecBufferSize;
+ if (_zis != null) return _zis.CodecBufferSize;
+ return _zos.CodecBufferSize;
+ }
+ }
+
+ public Ionic.Zlib.CompressionStrategy Strategy
+ {
+ get
+ {
+ if (_zf != null) return _zf.Strategy;
+ return _zos.Strategy;
+ }
+ }
+
+ public Zip64Option UseZip64WhenSaving
+ {
+ get
+ {
+ if (_zf != null) return _zf.UseZip64WhenSaving;
+ return _zos.EnableZip64;
+ }
+ }
+
+ public System.Text.Encoding AlternateEncoding
+ {
+ get
+ {
+ if (_zf != null) return _zf.AlternateEncoding;
+ if (_zos!=null) return _zos.AlternateEncoding;
+ return null;
+ }
+ }
+ public System.Text.Encoding DefaultEncoding
+ {
+ get
+ {
+ if (_zf != null) return ZipFile.DefaultEncoding;
+ if (_zos!=null) return ZipOutputStream.DefaultEncoding;
+ return null;
+ }
+ }
+ public ZipOption AlternateEncodingUsage
+ {
+ get
+ {
+ if (_zf != null) return _zf.AlternateEncodingUsage;
+ if (_zos!=null) return _zos.AlternateEncodingUsage;
+ return ZipOption.Never; // n/a
+ }
+ }
+
+ public Stream ReadStream
+ {
+ get
+ {
+ if (_zf != null) return _zf.ReadStream;
+ return _zis.ReadStream;
+ }
+ }
+ }
+
+}
\ No newline at end of file
--- /dev/null
+// ZipSegmentedStream.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009-2011 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-July-13 22:25:45>
+//
+// ------------------------------------------------------------------
+//
+// This module defines logic for zip streams that span disk files.
+//
+// ------------------------------------------------------------------
+
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+
+namespace Ionic.Zip
+{
+ internal class ZipSegmentedStream : System.IO.Stream
+ {
+ enum RwMode
+ {
+ None = 0,
+ ReadOnly = 1,
+ Write = 2,
+ //Update = 3
+ }
+
+ private RwMode rwMode;
+ private bool _exceptionPending; // **see note below
+ private string _baseName;
+ private string _baseDir;
+ //private bool _isDisposed;
+ private string _currentName;
+ private string _currentTempName;
+ private uint _currentDiskNumber;
+ private uint _maxDiskNumber;
+ private int _maxSegmentSize;
+ private System.IO.Stream _innerStream;
+
+ // **Note regarding exceptions:
+ //
+ // When ZipSegmentedStream is employed within a using clause,
+ // which is the typical scenario, and an exception is thrown
+ // within the scope of the using, Dispose() is invoked
+ // implicitly before processing the initial exception. If that
+ // happens, this class sets _exceptionPending to true, and then
+ // within the Dispose(bool), takes special action as
+ // appropriate. Need to be careful: any additional exceptions
+ // will mask the original one.
+
+ private ZipSegmentedStream() : base()
+ {
+ _exceptionPending = false;
+ }
+
+ internal static ZipSegmentedStream ForReading(string name,
+ uint initialDiskNumber,
+ uint maxDiskNumber)
+ {
+ ZipSegmentedStream zss = new ZipSegmentedStream()
+ {
+ rwMode = RwMode.ReadOnly,
+ CurrentSegment = initialDiskNumber,
+ _maxDiskNumber = maxDiskNumber,
+ _baseName = name,
+ };
+
+ // Console.WriteLine("ZSS: ForReading ({0})",
+ // Path.GetFileName(zss.CurrentName));
+
+ zss._SetReadStream();
+
+ return zss;
+ }
+
+
+ internal static ZipSegmentedStream ForWriting(string name, int maxSegmentSize)
+ {
+ ZipSegmentedStream zss = new ZipSegmentedStream()
+ {
+ rwMode = RwMode.Write,
+ CurrentSegment = 0,
+ _baseName = name,
+ _maxSegmentSize = maxSegmentSize,
+ _baseDir = Path.GetDirectoryName(name)
+ };
+
+ // workitem 9522
+ if (zss._baseDir=="") zss._baseDir=".";
+
+ zss._SetWriteStream(0);
+
+ // Console.WriteLine("ZSS: ForWriting ({0})",
+ // Path.GetFileName(zss.CurrentName));
+
+ return zss;
+ }
+
+
+ /// <summary>
+ /// Sort-of like a factory method, ForUpdate is used only when
+ /// the application needs to update the zip entry metadata for
+ /// a segmented zip file, when the starting segment is earlier
+ /// than the ending segment, for a particular entry.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// The update is always contiguous, never rolls over. As a
+ /// result, this method doesn't need to return a ZSS; it can
+ /// simply return a FileStream. That's why it's "sort of"
+ /// like a Factory method.
+ /// </para>
+ /// <para>
+ /// Caller must Close/Dispose the stream object returned by
+ /// this method.
+ /// </para>
+ /// </remarks>
+ internal static Stream ForUpdate(string name, uint diskNumber)
+ {
+ if (diskNumber >= 99)
+ throw new ArgumentOutOfRangeException("diskNumber");
+
+ string fname =
+ String.Format("{0}.z{1:D2}",
+ Path.Combine(Path.GetDirectoryName(name),
+ Path.GetFileNameWithoutExtension(name)),
+ diskNumber + 1);
+
+ // Console.WriteLine("ZSS: ForUpdate ({0})",
+ // Path.GetFileName(fname));
+
+ // This class assumes that the update will not expand the
+ // size of the segment. Update is used only for an in-place
+ // update of zip metadata. It never will try to write beyond
+ // the end of a segment.
+
+ return File.Open(fname,
+ FileMode.Open,
+ FileAccess.ReadWrite,
+ FileShare.None);
+ }
+
+ public bool ContiguousWrite
+ {
+ get;
+ set;
+ }
+
+
+ public UInt32 CurrentSegment
+ {
+ get
+ {
+ return _currentDiskNumber;
+ }
+ private set
+ {
+ _currentDiskNumber = value;
+ _currentName = null; // it will get updated next time referenced
+ }
+ }
+
+ /// <summary>
+ /// Name of the filesystem file corresponding to the current segment.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// The name is not always the name currently being used in the
+ /// filesystem. When rwMode is RwMode.Write, the filesystem file has a
+ /// temporary name until the stream is closed or until the next segment is
+ /// started.
+ /// </para>
+ /// </remarks>
+ public String CurrentName
+ {
+ get
+ {
+ if (_currentName==null)
+ _currentName = _NameForSegment(CurrentSegment);
+
+ return _currentName;
+ }
+ }
+
+
+ public String CurrentTempName
+ {
+ get
+ {
+ return _currentTempName;
+ }
+ }
+
+ private string _NameForSegment(uint diskNumber)
+ {
+ if (diskNumber >= 99)
+ {
+ _exceptionPending = true;
+ throw new OverflowException("The number of zip segments would exceed 99.");
+ }
+
+ return String.Format("{0}.z{1:D2}",
+ Path.Combine(Path.GetDirectoryName(_baseName),
+ Path.GetFileNameWithoutExtension(_baseName)),
+ diskNumber + 1);
+ }
+
+
+ // Returns the segment that WILL be current if writing
+ // a block of the given length.
+ // This isn't exactly true. It could roll over beyond
+ // this number.
+ public UInt32 ComputeSegment(int length)
+ {
+ if (_innerStream.Position + length > _maxSegmentSize)
+ // the block will go AT LEAST into the next segment
+ return CurrentSegment + 1;
+
+ // it will fit in the current segment
+ return CurrentSegment;
+ }
+
+
+ public override String ToString()
+ {
+ return String.Format("{0}[{1}][{2}], pos=0x{3:X})",
+ "ZipSegmentedStream", CurrentName,
+ rwMode.ToString(),
+ this.Position);
+ }
+
+
+ private void _SetReadStream()
+ {
+ if (_innerStream != null)
+ {
+#if NETCF
+ _innerStream.Close();
+#else
+ _innerStream.Dispose();
+#endif
+ }
+
+ if (CurrentSegment + 1 == _maxDiskNumber)
+ _currentName = _baseName;
+
+ // Console.WriteLine("ZSS: SRS ({0})",
+ // Path.GetFileName(CurrentName));
+
+ _innerStream = File.OpenRead(CurrentName);
+ }
+
+
+ /// <summary>
+ /// Read from the stream
+ /// </summary>
+ /// <param name="buffer">the buffer to read</param>
+ /// <param name="offset">the offset at which to start</param>
+ /// <param name="count">the number of bytes to read</param>
+ /// <returns>the number of bytes actually read</returns>
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ if (rwMode != RwMode.ReadOnly)
+ {
+ _exceptionPending = true;
+ throw new InvalidOperationException("Stream Error: Cannot Read.");
+ }
+
+ int r = _innerStream.Read(buffer, offset, count);
+ int r1 = r;
+
+ while (r1 != count)
+ {
+ if (_innerStream.Position != _innerStream.Length)
+ {
+ _exceptionPending = true;
+ throw new ZipException(String.Format("Read error in file {0}", CurrentName));
+
+ }
+
+ if (CurrentSegment + 1 == _maxDiskNumber)
+ return r; // no more to read
+
+ CurrentSegment++;
+ _SetReadStream();
+ offset += r1;
+ count -= r1;
+ r1 = _innerStream.Read(buffer, offset, count);
+ r += r1;
+ }
+ return r;
+ }
+
+
+
+ private void _SetWriteStream(uint increment)
+ {
+ if (_innerStream != null)
+ {
+#if NETCF
+ _innerStream.Close();
+#else
+ _innerStream.Dispose();
+#endif
+ if (File.Exists(CurrentName))
+ File.Delete(CurrentName);
+ File.Move(_currentTempName, CurrentName);
+ // Console.WriteLine("ZSS: SWS close ({0})",
+ // Path.GetFileName(CurrentName));
+ }
+
+ if (increment > 0)
+ CurrentSegment += increment;
+
+ SharedUtilities.CreateAndOpenUniqueTempFile(_baseDir,
+ out _innerStream,
+ out _currentTempName);
+
+ // Console.WriteLine("ZSS: SWS open ({0})",
+ // Path.GetFileName(_currentTempName));
+
+ if (CurrentSegment == 0)
+ _innerStream.Write(BitConverter.GetBytes(ZipConstants.SplitArchiveSignature), 0, 4);
+ }
+
+
+ /// <summary>
+ /// Write to the stream.
+ /// </summary>
+ /// <param name="buffer">the buffer from which to write</param>
+ /// <param name="offset">the offset at which to start writing</param>
+ /// <param name="count">the number of bytes to write</param>
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ if (rwMode != RwMode.Write)
+ {
+ _exceptionPending = true;
+ throw new InvalidOperationException("Stream Error: Cannot Write.");
+ }
+
+
+ if (ContiguousWrite)
+ {
+ // enough space for a contiguous write?
+ if (_innerStream.Position + count > _maxSegmentSize)
+ _SetWriteStream(1);
+ }
+ else
+ {
+ while (_innerStream.Position + count > _maxSegmentSize)
+ {
+ int c = unchecked(_maxSegmentSize - (int)_innerStream.Position);
+ _innerStream.Write(buffer, offset, c);
+ _SetWriteStream(1);
+ count -= c;
+ offset += c;
+ }
+ }
+
+ _innerStream.Write(buffer, offset, count);
+ }
+
+
+ public long TruncateBackward(uint diskNumber, long offset)
+ {
+ // Console.WriteLine("***ZSS.Trunc to disk {0}", diskNumber);
+ // Console.WriteLine("***ZSS.Trunc: current disk {0}", CurrentSegment);
+ if (diskNumber >= 99)
+ throw new ArgumentOutOfRangeException("diskNumber");
+
+ if (rwMode != RwMode.Write)
+ {
+ _exceptionPending = true;
+ throw new ZipException("bad state.");
+ }
+
+ // Seek back in the segmented stream to a (maybe) prior segment.
+
+ // Check if it is the same segment. If it is, very simple.
+ if (diskNumber == CurrentSegment)
+ {
+ var x =_innerStream.Seek(offset, SeekOrigin.Begin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(_innerStream);
+ return x;
+ }
+
+ // Seeking back to a prior segment.
+ // The current segment and any intervening segments must be removed.
+ // First, close the current segment, and then remove it.
+ if (_innerStream != null)
+ {
+#if NETCF
+ _innerStream.Close();
+#else
+ _innerStream.Dispose();
+#endif
+ if (File.Exists(_currentTempName))
+ File.Delete(_currentTempName);
+ }
+
+ // Now, remove intervening segments.
+ for (uint j= CurrentSegment-1; j > diskNumber; j--)
+ {
+ string s = _NameForSegment(j);
+ // Console.WriteLine("***ZSS.Trunc: removing file {0}", s);
+ if (File.Exists(s))
+ File.Delete(s);
+ }
+
+ // now, open the desired segment. It must exist.
+ CurrentSegment = diskNumber;
+
+ // get a new temp file, try 3 times:
+ for (int i = 0; i < 3; i++)
+ {
+ try
+ {
+ _currentTempName = SharedUtilities.InternalGetTempFileName();
+ // move the .z0x file back to a temp name
+ File.Move(CurrentName, _currentTempName);
+ break; // workitem 12403
+ }
+ catch(IOException)
+ {
+ if (i == 2) throw;
+ }
+ }
+
+ // open it
+ _innerStream = new FileStream(_currentTempName, FileMode.Open);
+
+ var r = _innerStream.Seek(offset, SeekOrigin.Begin);
+
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(_innerStream);
+
+ return r;
+ }
+
+
+
+ public override bool CanRead
+ {
+ get
+ {
+ return (rwMode == RwMode.ReadOnly &&
+ (_innerStream != null) &&
+ _innerStream.CanRead);
+ }
+ }
+
+
+ public override bool CanSeek
+ {
+ get
+ {
+ return (_innerStream != null) &&
+ _innerStream.CanSeek;
+ }
+ }
+
+
+ public override bool CanWrite
+ {
+ get
+ {
+ return (rwMode == RwMode.Write) &&
+ (_innerStream != null) &&
+ _innerStream.CanWrite;
+ }
+ }
+
+ public override void Flush()
+ {
+ _innerStream.Flush();
+ }
+
+ public override long Length
+ {
+ get
+ {
+ return _innerStream.Length;
+ }
+ }
+
+ public override long Position
+ {
+ get { return _innerStream.Position; }
+ set { _innerStream.Position = value; }
+ }
+
+ public override long Seek(long offset, System.IO.SeekOrigin origin)
+ {
+ var x = _innerStream.Seek(offset, origin);
+ // workitem 10178
+ Ionic.Zip.SharedUtilities.Workaround_Ladybug318918(_innerStream);
+ return x;
+ }
+
+ public override void SetLength(long value)
+ {
+ if (rwMode != RwMode.Write)
+ {
+ _exceptionPending = true;
+ throw new InvalidOperationException();
+ }
+ _innerStream.SetLength(value);
+ }
+
+
+ protected override void Dispose(bool disposing)
+ {
+ // this gets called by Stream.Close()
+
+ // if (_isDisposed) return;
+ // _isDisposed = true;
+ //Console.WriteLine("Dispose (mode={0})\n", rwMode.ToString());
+
+ try
+ {
+ if (_innerStream != null)
+ {
+#if NETCF
+ _innerStream.Close();
+#else
+ _innerStream.Dispose();
+#endif
+ //_innerStream = null;
+ if (rwMode == RwMode.Write)
+ {
+ if (_exceptionPending)
+ {
+ // possibly could try to clean up all the
+ // temp files created so far...
+ }
+ else
+ {
+ // // move the final temp file to the .zNN name
+ // if (File.Exists(CurrentName))
+ // File.Delete(CurrentName);
+ // if (File.Exists(_currentTempName))
+ // File.Move(_currentTempName, CurrentName);
+ }
+ }
+ }
+ }
+ finally
+ {
+ base.Dispose(disposing);
+ }
+ }
+
+ }
+
+}
\ No newline at end of file
--- /dev/null
+// Deflate.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-August-03 19:52:15>
+//
+// ------------------------------------------------------------------
+//
+// This module defines logic for handling the Deflate or compression.
+//
+// This code is based on multiple sources:
+// - the original zlib v1.2.3 source, which is Copyright (C) 1995-2005 Jean-loup Gailly.
+// - the original jzlib, which is Copyright (c) 2000-2003 ymnk, JCraft,Inc.
+//
+// However, this code is significantly different from both.
+// The object model is not the same, and many of the behaviors are different.
+//
+// In keeping with the license for these other works, the copyrights for
+// jzlib and zlib are here.
+//
+// -----------------------------------------------------------------------
+// Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in
+// the documentation and/or other materials provided with the distribution.
+//
+// 3. The names of the authors may not be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
+// INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
+// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// -----------------------------------------------------------------------
+//
+// This program is based on zlib-1.1.3; credit to authors
+// Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
+// and contributors of zlib.
+//
+// -----------------------------------------------------------------------
+
+
+using System;
+
+namespace Ionic.Zlib
+{
+
+ internal enum BlockState
+ {
+ NeedMore = 0, // block not completed, need more input or more output
+ BlockDone, // block flush performed
+ FinishStarted, // finish started, need only more output at next deflate
+ FinishDone // finish done, accept no more input or output
+ }
+
+ internal enum DeflateFlavor
+ {
+ Store,
+ Fast,
+ Slow
+ }
+
+ internal sealed class DeflateManager
+ {
+ private static readonly int MEM_LEVEL_MAX = 9;
+ private static readonly int MEM_LEVEL_DEFAULT = 8;
+
+ internal delegate BlockState CompressFunc(FlushType flush);
+
+ internal class Config
+ {
+ // Use a faster search when the previous match is longer than this
+ internal int GoodLength; // reduce lazy search above this match length
+
+ // Attempt to find a better match only when the current match is
+ // strictly smaller than this value. This mechanism is used only for
+ // compression levels >= 4. For levels 1,2,3: MaxLazy is actually
+ // MaxInsertLength. (See DeflateFast)
+
+ internal int MaxLazy; // do not perform lazy search above this match length
+
+ internal int NiceLength; // quit search above this match length
+
+ // To speed up deflation, hash chains are never searched beyond this
+ // length. A higher limit improves compression ratio but degrades the speed.
+
+ internal int MaxChainLength;
+
+ internal DeflateFlavor Flavor;
+
+ private Config(int goodLength, int maxLazy, int niceLength, int maxChainLength, DeflateFlavor flavor)
+ {
+ this.GoodLength = goodLength;
+ this.MaxLazy = maxLazy;
+ this.NiceLength = niceLength;
+ this.MaxChainLength = maxChainLength;
+ this.Flavor = flavor;
+ }
+
+ internal static Config Lookup(CompressionLevel level)
+ {
+ return Table[(int)level];
+ }
+
+
+ static Config()
+ {
+ Table = new Config[] {
+ new Config(0, 0, 0, 0, DeflateFlavor.Store),
+ new Config(4, 4, 8, 4, DeflateFlavor.Fast),
+ new Config(4, 5, 16, 8, DeflateFlavor.Fast),
+ new Config(4, 6, 32, 32, DeflateFlavor.Fast),
+
+ new Config(4, 4, 16, 16, DeflateFlavor.Slow),
+ new Config(8, 16, 32, 32, DeflateFlavor.Slow),
+ new Config(8, 16, 128, 128, DeflateFlavor.Slow),
+ new Config(8, 32, 128, 256, DeflateFlavor.Slow),
+ new Config(32, 128, 258, 1024, DeflateFlavor.Slow),
+ new Config(32, 258, 258, 4096, DeflateFlavor.Slow),
+ };
+ }
+
+ private static readonly Config[] Table;
+ }
+
+
+ private CompressFunc DeflateFunction;
+
+ private static readonly System.String[] _ErrorMessage = new System.String[]
+ {
+ "need dictionary",
+ "stream end",
+ "",
+ "file error",
+ "stream error",
+ "data error",
+ "insufficient memory",
+ "buffer error",
+ "incompatible version",
+ ""
+ };
+
+ // preset dictionary flag in zlib header
+ private static readonly int PRESET_DICT = 0x20;
+
+ private static readonly int INIT_STATE = 42;
+ private static readonly int BUSY_STATE = 113;
+ private static readonly int FINISH_STATE = 666;
+
+ // The deflate compression method
+ private static readonly int Z_DEFLATED = 8;
+
+ private static readonly int STORED_BLOCK = 0;
+ private static readonly int STATIC_TREES = 1;
+ private static readonly int DYN_TREES = 2;
+
+ // The three kinds of block type
+ private static readonly int Z_BINARY = 0;
+ private static readonly int Z_ASCII = 1;
+ private static readonly int Z_UNKNOWN = 2;
+
+ private static readonly int Buf_size = 8 * 2;
+
+ private static readonly int MIN_MATCH = 3;
+ private static readonly int MAX_MATCH = 258;
+
+ private static readonly int MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);
+
+ private static readonly int HEAP_SIZE = (2 * InternalConstants.L_CODES + 1);
+
+ private static readonly int END_BLOCK = 256;
+
+ internal ZlibCodec _codec; // the zlib encoder/decoder
+ internal int status; // as the name implies
+ internal byte[] pending; // output still pending - waiting to be compressed
+ internal int nextPending; // index of next pending byte to output to the stream
+ internal int pendingCount; // number of bytes in the pending buffer
+
+ internal sbyte data_type; // UNKNOWN, BINARY or ASCII
+ internal int last_flush; // value of flush param for previous deflate call
+
+ internal int w_size; // LZ77 window size (32K by default)
+ internal int w_bits; // log2(w_size) (8..16)
+ internal int w_mask; // w_size - 1
+
+ //internal byte[] dictionary;
+ internal byte[] window;
+
+ // Sliding window. Input bytes are read into the second half of the window,
+ // and move to the first half later to keep a dictionary of at least wSize
+ // bytes. With this organization, matches are limited to a distance of
+ // wSize-MAX_MATCH bytes, but this ensures that IO is always
+ // performed with a length multiple of the block size.
+ //
+ // To do: use the user input buffer as sliding window.
+
+ internal int window_size;
+ // Actual size of window: 2*wSize, except when the user input buffer
+ // is directly used as sliding window.
+
+ internal short[] prev;
+ // Link to older string with same hash index. To limit the size of this
+ // array to 64K, this link is maintained only for the last 32K strings.
+ // An index in this array is thus a window index modulo 32K.
+
+ internal short[] head; // Heads of the hash chains or NIL.
+
+ internal int ins_h; // hash index of string to be inserted
+ internal int hash_size; // number of elements in hash table
+ internal int hash_bits; // log2(hash_size)
+ internal int hash_mask; // hash_size-1
+
+ // Number of bits by which ins_h must be shifted at each input
+ // step. It must be such that after MIN_MATCH steps, the oldest
+ // byte no longer takes part in the hash key, that is:
+ // hash_shift * MIN_MATCH >= hash_bits
+ internal int hash_shift;
+
+ // Window position at the beginning of the current output block. Gets
+ // negative when the window is moved backwards.
+
+ internal int block_start;
+
+ Config config;
+ internal int match_length; // length of best match
+ internal int prev_match; // previous match
+ internal int match_available; // set if previous match exists
+ internal int strstart; // start of string to insert into.....????
+ internal int match_start; // start of matching string
+ internal int lookahead; // number of valid bytes ahead in window
+
+ // Length of the best match at previous step. Matches not greater than this
+ // are discarded. This is used in the lazy match evaluation.
+ internal int prev_length;
+
+ // Insert new strings in the hash table only if the match length is not
+ // greater than this length. This saves time but degrades compression.
+ // max_insert_length is used only for compression levels <= 3.
+
+ internal CompressionLevel compressionLevel; // compression level (1..9)
+ internal CompressionStrategy compressionStrategy; // favor or force Huffman coding
+
+
+ internal short[] dyn_ltree; // literal and length tree
+ internal short[] dyn_dtree; // distance tree
+ internal short[] bl_tree; // Huffman tree for bit lengths
+
+ internal Tree treeLiterals = new Tree(); // desc for literal tree
+ internal Tree treeDistances = new Tree(); // desc for distance tree
+ internal Tree treeBitLengths = new Tree(); // desc for bit length tree
+
+ // number of codes at each bit length for an optimal tree
+ internal short[] bl_count = new short[InternalConstants.MAX_BITS + 1];
+
+ // heap used to build the Huffman trees
+ internal int[] heap = new int[2 * InternalConstants.L_CODES + 1];
+
+ internal int heap_len; // number of elements in the heap
+ internal int heap_max; // element of largest frequency
+
+ // The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
+ // The same heap array is used to build all trees.
+
+ // Depth of each subtree used as tie breaker for trees of equal frequency
+ internal sbyte[] depth = new sbyte[2 * InternalConstants.L_CODES + 1];
+
+ internal int _lengthOffset; // index for literals or lengths
+
+
+ // Size of match buffer for literals/lengths. There are 4 reasons for
+ // limiting lit_bufsize to 64K:
+ // - frequencies can be kept in 16 bit counters
+ // - if compression is not successful for the first block, all input
+ // data is still in the window so we can still emit a stored block even
+ // when input comes from standard input. (This can also be done for
+ // all blocks if lit_bufsize is not greater than 32K.)
+ // - if compression is not successful for a file smaller than 64K, we can
+ // even emit a stored file instead of a stored block (saving 5 bytes).
+ // This is applicable only for zip (not gzip or zlib).
+ // - creating new Huffman trees less frequently may not provide fast
+ // adaptation to changes in the input data statistics. (Take for
+ // example a binary file with poorly compressible code followed by
+ // a highly compressible string table.) Smaller buffer sizes give
+ // fast adaptation but have of course the overhead of transmitting
+ // trees more frequently.
+
+ internal int lit_bufsize;
+
+ internal int last_lit; // running index in l_buf
+
+ // Buffer for distances. To simplify the code, d_buf and l_buf have
+ // the same number of elements. To use different lengths, an extra flag
+ // array would be necessary.
+
+ internal int _distanceOffset; // index into pending; points to distance data??
+
+ internal int opt_len; // bit length of current block with optimal trees
+ internal int static_len; // bit length of current block with static trees
+ internal int matches; // number of string matches in current block
+ internal int last_eob_len; // bit length of EOB code for last block
+
+ // Output buffer. bits are inserted starting at the bottom (least
+ // significant bits).
+ internal short bi_buf;
+
+ // Number of valid bits in bi_buf. All bits above the last valid bit
+ // are always zero.
+ internal int bi_valid;
+
+
+ internal DeflateManager()
+ {
+ dyn_ltree = new short[HEAP_SIZE * 2];
+ dyn_dtree = new short[(2 * InternalConstants.D_CODES + 1) * 2]; // distance tree
+ bl_tree = new short[(2 * InternalConstants.BL_CODES + 1) * 2]; // Huffman tree for bit lengths
+ }
+
+
+ // lm_init
+ private void _InitializeLazyMatch()
+ {
+ window_size = 2 * w_size;
+
+ // clear the hash - workitem 9063
+ Array.Clear(head, 0, hash_size);
+ //for (int i = 0; i < hash_size; i++) head[i] = 0;
+
+ config = Config.Lookup(compressionLevel);
+ SetDeflater();
+
+ strstart = 0;
+ block_start = 0;
+ lookahead = 0;
+ match_length = prev_length = MIN_MATCH - 1;
+ match_available = 0;
+ ins_h = 0;
+ }
+
+ // Initialize the tree data structures for a new zlib stream.
+ private void _InitializeTreeData()
+ {
+ treeLiterals.dyn_tree = dyn_ltree;
+ treeLiterals.staticTree = StaticTree.Literals;
+
+ treeDistances.dyn_tree = dyn_dtree;
+ treeDistances.staticTree = StaticTree.Distances;
+
+ treeBitLengths.dyn_tree = bl_tree;
+ treeBitLengths.staticTree = StaticTree.BitLengths;
+
+ bi_buf = 0;
+ bi_valid = 0;
+ last_eob_len = 8; // enough lookahead for inflate
+
+ // Initialize the first block of the first file:
+ _InitializeBlocks();
+ }
+
+ internal void _InitializeBlocks()
+ {
+ // Initialize the trees.
+ for (int i = 0; i < InternalConstants.L_CODES; i++)
+ dyn_ltree[i * 2] = 0;
+ for (int i = 0; i < InternalConstants.D_CODES; i++)
+ dyn_dtree[i * 2] = 0;
+ for (int i = 0; i < InternalConstants.BL_CODES; i++)
+ bl_tree[i * 2] = 0;
+
+ dyn_ltree[END_BLOCK * 2] = 1;
+ opt_len = static_len = 0;
+ last_lit = matches = 0;
+ }
+
+ // Restore the heap property by moving down the tree starting at node k,
+ // exchanging a node with the smallest of its two sons if necessary, stopping
+ // when the heap property is re-established (each father smaller than its
+ // two sons).
+ internal void pqdownheap(short[] tree, int k)
+ {
+ int v = heap[k];
+ int j = k << 1; // left son of k
+ while (j <= heap_len)
+ {
+ // Set j to the smallest of the two sons:
+ if (j < heap_len && _IsSmaller(tree, heap[j + 1], heap[j], depth))
+ {
+ j++;
+ }
+ // Exit if v is smaller than both sons
+ if (_IsSmaller(tree, v, heap[j], depth))
+ break;
+
+ // Exchange v with the smallest son
+ heap[k] = heap[j]; k = j;
+ // And continue down the tree, setting j to the left son of k
+ j <<= 1;
+ }
+ heap[k] = v;
+ }
+
+ internal static bool _IsSmaller(short[] tree, int n, int m, sbyte[] depth)
+ {
+ short tn2 = tree[n * 2];
+ short tm2 = tree[m * 2];
+ return (tn2 < tm2 || (tn2 == tm2 && depth[n] <= depth[m]));
+ }
+
+
+ // Scan a literal or distance tree to determine the frequencies of the codes
+ // in the bit length tree.
+ internal void scan_tree(short[] tree, int max_code)
+ {
+ int n; // iterates over all tree elements
+ int prevlen = -1; // last emitted length
+ int curlen; // length of current code
+ int nextlen = (int)tree[0 * 2 + 1]; // length of next code
+ int count = 0; // repeat count of the current code
+ int max_count = 7; // max repeat count
+ int min_count = 4; // min repeat count
+
+ if (nextlen == 0)
+ {
+ max_count = 138; min_count = 3;
+ }
+ tree[(max_code + 1) * 2 + 1] = (short)0x7fff; // guard //??
+
+ for (n = 0; n <= max_code; n++)
+ {
+ curlen = nextlen; nextlen = (int)tree[(n + 1) * 2 + 1];
+ if (++count < max_count && curlen == nextlen)
+ {
+ continue;
+ }
+ else if (count < min_count)
+ {
+ bl_tree[curlen * 2] = (short)(bl_tree[curlen * 2] + count);
+ }
+ else if (curlen != 0)
+ {
+ if (curlen != prevlen)
+ bl_tree[curlen * 2]++;
+ bl_tree[InternalConstants.REP_3_6 * 2]++;
+ }
+ else if (count <= 10)
+ {
+ bl_tree[InternalConstants.REPZ_3_10 * 2]++;
+ }
+ else
+ {
+ bl_tree[InternalConstants.REPZ_11_138 * 2]++;
+ }
+ count = 0; prevlen = curlen;
+ if (nextlen == 0)
+ {
+ max_count = 138; min_count = 3;
+ }
+ else if (curlen == nextlen)
+ {
+ max_count = 6; min_count = 3;
+ }
+ else
+ {
+ max_count = 7; min_count = 4;
+ }
+ }
+ }
+
+ // Construct the Huffman tree for the bit lengths and return the index in
+ // bl_order of the last bit length code to send.
+ internal int build_bl_tree()
+ {
+ int max_blindex; // index of last bit length code of non zero freq
+
+ // Determine the bit length frequencies for literal and distance trees
+ scan_tree(dyn_ltree, treeLiterals.max_code);
+ scan_tree(dyn_dtree, treeDistances.max_code);
+
+ // Build the bit length tree:
+ treeBitLengths.build_tree(this);
+ // opt_len now includes the length of the tree representations, except
+ // the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
+
+ // Determine the number of bit length codes to send. The pkzip format
+ // requires that at least 4 bit length codes be sent. (appnote.txt says
+ // 3 but the actual value used is 4.)
+ for (max_blindex = InternalConstants.BL_CODES - 1; max_blindex >= 3; max_blindex--)
+ {
+ if (bl_tree[Tree.bl_order[max_blindex] * 2 + 1] != 0)
+ break;
+ }
+ // Update opt_len to include the bit length tree and counts
+ opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;
+
+ return max_blindex;
+ }
+
+
+ // Send the header for a block using dynamic Huffman trees: the counts, the
+ // lengths of the bit length codes, the literal tree and the distance tree.
+ // IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
+ internal void send_all_trees(int lcodes, int dcodes, int blcodes)
+ {
+ int rank; // index in bl_order
+
+ send_bits(lcodes - 257, 5); // not +255 as stated in appnote.txt
+ send_bits(dcodes - 1, 5);
+ send_bits(blcodes - 4, 4); // not -3 as stated in appnote.txt
+ for (rank = 0; rank < blcodes; rank++)
+ {
+ send_bits(bl_tree[Tree.bl_order[rank] * 2 + 1], 3);
+ }
+ send_tree(dyn_ltree, lcodes - 1); // literal tree
+ send_tree(dyn_dtree, dcodes - 1); // distance tree
+ }
+
+ // Send a literal or distance tree in compressed form, using the codes in
+ // bl_tree.
+ internal void send_tree(short[] tree, int max_code)
+ {
+ int n; // iterates over all tree elements
+ int prevlen = -1; // last emitted length
+ int curlen; // length of current code
+ int nextlen = tree[0 * 2 + 1]; // length of next code
+ int count = 0; // repeat count of the current code
+ int max_count = 7; // max repeat count
+ int min_count = 4; // min repeat count
+
+ if (nextlen == 0)
+ {
+ max_count = 138; min_count = 3;
+ }
+
+ for (n = 0; n <= max_code; n++)
+ {
+ curlen = nextlen; nextlen = tree[(n + 1) * 2 + 1];
+ if (++count < max_count && curlen == nextlen)
+ {
+ continue;
+ }
+ else if (count < min_count)
+ {
+ do
+ {
+ send_code(curlen, bl_tree);
+ }
+ while (--count != 0);
+ }
+ else if (curlen != 0)
+ {
+ if (curlen != prevlen)
+ {
+ send_code(curlen, bl_tree); count--;
+ }
+ send_code(InternalConstants.REP_3_6, bl_tree);
+ send_bits(count - 3, 2);
+ }
+ else if (count <= 10)
+ {
+ send_code(InternalConstants.REPZ_3_10, bl_tree);
+ send_bits(count - 3, 3);
+ }
+ else
+ {
+ send_code(InternalConstants.REPZ_11_138, bl_tree);
+ send_bits(count - 11, 7);
+ }
+ count = 0; prevlen = curlen;
+ if (nextlen == 0)
+ {
+ max_count = 138; min_count = 3;
+ }
+ else if (curlen == nextlen)
+ {
+ max_count = 6; min_count = 3;
+ }
+ else
+ {
+ max_count = 7; min_count = 4;
+ }
+ }
+ }
+
+ // Output a block of bytes on the stream.
+ // IN assertion: there is enough room in pending_buf.
+ private void put_bytes(byte[] p, int start, int len)
+ {
+ Array.Copy(p, start, pending, pendingCount, len);
+ pendingCount += len;
+ }
+
+#if NOTNEEDED
+ private void put_byte(byte c)
+ {
+ pending[pendingCount++] = c;
+ }
+ internal void put_short(int b)
+ {
+ unchecked
+ {
+ pending[pendingCount++] = (byte)b;
+ pending[pendingCount++] = (byte)(b >> 8);
+ }
+ }
+ internal void putShortMSB(int b)
+ {
+ unchecked
+ {
+ pending[pendingCount++] = (byte)(b >> 8);
+ pending[pendingCount++] = (byte)b;
+ }
+ }
+#endif
+
+ internal void send_code(int c, short[] tree)
+ {
+ int c2 = c * 2;
+ send_bits((tree[c2] & 0xffff), (tree[c2 + 1] & 0xffff));
+ }
+
+ internal void send_bits(int value, int length)
+ {
+ int len = length;
+ unchecked
+ {
+ if (bi_valid > (int)Buf_size - len)
+ {
+ //int val = value;
+ // bi_buf |= (val << bi_valid);
+
+ bi_buf |= (short)((value << bi_valid) & 0xffff);
+ //put_short(bi_buf);
+ pending[pendingCount++] = (byte)bi_buf;
+ pending[pendingCount++] = (byte)(bi_buf >> 8);
+
+
+ bi_buf = (short)((uint)value >> (Buf_size - bi_valid));
+ bi_valid += len - Buf_size;
+ }
+ else
+ {
+ // bi_buf |= (value) << bi_valid;
+ bi_buf |= (short)((value << bi_valid) & 0xffff);
+ bi_valid += len;
+ }
+ }
+ }
+
+ // Send one empty static block to give enough lookahead for inflate.
+ // This takes 10 bits, of which 7 may remain in the bit buffer.
+ // The current inflate code requires 9 bits of lookahead. If the
+ // last two codes for the previous block (real code plus EOB) were coded
+ // on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode
+ // the last real code. In this case we send two empty static blocks instead
+ // of one. (There are no problems if the previous block is stored or fixed.)
+ // To simplify the code, we assume the worst case of last real code encoded
+ // on one bit only.
+ internal void _tr_align()
+ {
+ send_bits(STATIC_TREES << 1, 3);
+ send_code(END_BLOCK, StaticTree.lengthAndLiteralsTreeCodes);
+
+ bi_flush();
+
+ // Of the 10 bits for the empty block, we have already sent
+ // (10 - bi_valid) bits. The lookahead for the last real code (before
+ // the EOB of the previous block) was thus at least one plus the length
+ // of the EOB plus what we have just sent of the empty static block.
+ if (1 + last_eob_len + 10 - bi_valid < 9)
+ {
+ send_bits(STATIC_TREES << 1, 3);
+ send_code(END_BLOCK, StaticTree.lengthAndLiteralsTreeCodes);
+ bi_flush();
+ }
+ last_eob_len = 7;
+ }
+
+
+ // Save the match info and tally the frequency counts. Return true if
+ // the current block must be flushed.
+ internal bool _tr_tally(int dist, int lc)
+ {
+ pending[_distanceOffset + last_lit * 2] = unchecked((byte) ( (uint)dist >> 8 ) );
+ pending[_distanceOffset + last_lit * 2 + 1] = unchecked((byte)dist);
+ pending[_lengthOffset + last_lit] = unchecked((byte)lc);
+ last_lit++;
+
+ if (dist == 0)
+ {
+ // lc is the unmatched char
+ dyn_ltree[lc * 2]++;
+ }
+ else
+ {
+ matches++;
+ // Here, lc is the match length - MIN_MATCH
+ dist--; // dist = match distance - 1
+ dyn_ltree[(Tree.LengthCode[lc] + InternalConstants.LITERALS + 1) * 2]++;
+ dyn_dtree[Tree.DistanceCode(dist) * 2]++;
+ }
+
+ if ((last_lit & 0x1fff) == 0 && (int)compressionLevel > 2)
+ {
+ // Compute an upper bound for the compressed length
+ int out_length = last_lit << 3;
+ int in_length = strstart - block_start;
+ int dcode;
+ for (dcode = 0; dcode < InternalConstants.D_CODES; dcode++)
+ {
+ out_length = (int)(out_length + (int)dyn_dtree[dcode * 2] * (5L + Tree.ExtraDistanceBits[dcode]));
+ }
+ out_length >>= 3;
+ if ((matches < (last_lit / 2)) && out_length < in_length / 2)
+ return true;
+ }
+
+ return (last_lit == lit_bufsize - 1) || (last_lit == lit_bufsize);
+ // dinoch - wraparound?
+ // We avoid equality with lit_bufsize because of wraparound at 64K
+ // on 16 bit machines and because stored blocks are restricted to
+ // 64K-1 bytes.
+ }
+
+
+
+ // Send the block data compressed using the given Huffman trees
+ internal void send_compressed_block(short[] ltree, short[] dtree)
+ {
+ int distance; // distance of matched string
+ int lc; // match length or unmatched char (if dist == 0)
+ int lx = 0; // running index in l_buf
+ int code; // the code to send
+ int extra; // number of extra bits to send
+
+ if (last_lit != 0)
+ {
+ do
+ {
+ int ix = _distanceOffset + lx * 2;
+ distance = ((pending[ix] << 8) & 0xff00) |
+ (pending[ix + 1] & 0xff);
+ lc = (pending[_lengthOffset + lx]) & 0xff;
+ lx++;
+
+ if (distance == 0)
+ {
+ send_code(lc, ltree); // send a literal byte
+ }
+ else
+ {
+ // literal or match pair
+ // Here, lc is the match length - MIN_MATCH
+ code = Tree.LengthCode[lc];
+
+ // send the length code
+ send_code(code + InternalConstants.LITERALS + 1, ltree);
+ extra = Tree.ExtraLengthBits[code];
+ if (extra != 0)
+ {
+ // send the extra length bits
+ lc -= Tree.LengthBase[code];
+ send_bits(lc, extra);
+ }
+ distance--; // dist is now the match distance - 1
+ code = Tree.DistanceCode(distance);
+
+ // send the distance code
+ send_code(code, dtree);
+
+ extra = Tree.ExtraDistanceBits[code];
+ if (extra != 0)
+ {
+ // send the extra distance bits
+ distance -= Tree.DistanceBase[code];
+ send_bits(distance, extra);
+ }
+ }
+
+ // Check that the overlay between pending and d_buf+l_buf is ok:
+ }
+ while (lx < last_lit);
+ }
+
+ send_code(END_BLOCK, ltree);
+ last_eob_len = ltree[END_BLOCK * 2 + 1];
+ }
+
+
+
+ // Set the data type to ASCII or BINARY, using a crude approximation:
+ // binary if more than 20% of the bytes are <= 6 or >= 128, ascii otherwise.
+ // IN assertion: the fields freq of dyn_ltree are set and the total of all
+ // frequencies does not exceed 64K (to fit in an int on 16 bit machines).
+ internal void set_data_type()
+ {
+ int n = 0;
+ int ascii_freq = 0;
+ int bin_freq = 0;
+ while (n < 7)
+ {
+ bin_freq += dyn_ltree[n * 2]; n++;
+ }
+ while (n < 128)
+ {
+ ascii_freq += dyn_ltree[n * 2]; n++;
+ }
+ while (n < InternalConstants.LITERALS)
+ {
+ bin_freq += dyn_ltree[n * 2]; n++;
+ }
+ data_type = (sbyte)(bin_freq > (ascii_freq >> 2) ? Z_BINARY : Z_ASCII);
+ }
+
+
+
+ // Flush the bit buffer, keeping at most 7 bits in it.
+ internal void bi_flush()
+ {
+ if (bi_valid == 16)
+ {
+ pending[pendingCount++] = (byte)bi_buf;
+ pending[pendingCount++] = (byte)(bi_buf >> 8);
+ bi_buf = 0;
+ bi_valid = 0;
+ }
+ else if (bi_valid >= 8)
+ {
+ //put_byte((byte)bi_buf);
+ pending[pendingCount++] = (byte)bi_buf;
+ bi_buf >>= 8;
+ bi_valid -= 8;
+ }
+ }
+
+ // Flush the bit buffer and align the output on a byte boundary
+ internal void bi_windup()
+ {
+ if (bi_valid > 8)
+ {
+ pending[pendingCount++] = (byte)bi_buf;
+ pending[pendingCount++] = (byte)(bi_buf >> 8);
+ }
+ else if (bi_valid > 0)
+ {
+ //put_byte((byte)bi_buf);
+ pending[pendingCount++] = (byte)bi_buf;
+ }
+ bi_buf = 0;
+ bi_valid = 0;
+ }
+
+ // Copy a stored block, storing first the length and its
+ // one's complement if requested.
+ internal void copy_block(int buf, int len, bool header)
+ {
+ bi_windup(); // align on byte boundary
+ last_eob_len = 8; // enough lookahead for inflate
+
+ if (header)
+ unchecked
+ {
+ //put_short((short)len);
+ pending[pendingCount++] = (byte)len;
+ pending[pendingCount++] = (byte)(len >> 8);
+ //put_short((short)~len);
+ pending[pendingCount++] = (byte)~len;
+ pending[pendingCount++] = (byte)(~len >> 8);
+ }
+
+ put_bytes(window, buf, len);
+ }
+
+ internal void flush_block_only(bool eof)
+ {
+ _tr_flush_block(block_start >= 0 ? block_start : -1, strstart - block_start, eof);
+ block_start = strstart;
+ _codec.flush_pending();
+ }
+
+ // Copy without compression as much as possible from the input stream, return
+ // the current block state.
+ // This function does not insert new strings in the dictionary since
+ // uncompressible data is probably not useful. This function is used
+ // only for the level=0 compression option.
+ // NOTE: this function should be optimized to avoid extra copying from
+ // window to pending_buf.
+ internal BlockState DeflateNone(FlushType flush)
+ {
+ // Stored blocks are limited to 0xffff bytes, pending is limited
+ // to pending_buf_size, and each stored block has a 5 byte header:
+
+ int max_block_size = 0xffff;
+ int max_start;
+
+ if (max_block_size > pending.Length - 5)
+ {
+ max_block_size = pending.Length - 5;
+ }
+
+ // Copy as much as possible from input to output:
+ while (true)
+ {
+ // Fill the window as much as possible:
+ if (lookahead <= 1)
+ {
+ _fillWindow();
+ if (lookahead == 0 && flush == FlushType.None)
+ return BlockState.NeedMore;
+ if (lookahead == 0)
+ break; // flush the current block
+ }
+
+ strstart += lookahead;
+ lookahead = 0;
+
+ // Emit a stored block if pending will be full:
+ max_start = block_start + max_block_size;
+ if (strstart == 0 || strstart >= max_start)
+ {
+ // strstart == 0 is possible when wraparound on 16-bit machine
+ lookahead = (int)(strstart - max_start);
+ strstart = (int)max_start;
+
+ flush_block_only(false);
+ if (_codec.AvailableBytesOut == 0)
+ return BlockState.NeedMore;
+ }
+
+ // Flush if we may have to slide, otherwise block_start may become
+ // negative and the data will be gone:
+ if (strstart - block_start >= w_size - MIN_LOOKAHEAD)
+ {
+ flush_block_only(false);
+ if (_codec.AvailableBytesOut == 0)
+ return BlockState.NeedMore;
+ }
+ }
+
+ flush_block_only(flush == FlushType.Finish);
+ if (_codec.AvailableBytesOut == 0)
+ return (flush == FlushType.Finish) ? BlockState.FinishStarted : BlockState.NeedMore;
+
+ return flush == FlushType.Finish ? BlockState.FinishDone : BlockState.BlockDone;
+ }
+
+
+ // Send a stored block
+ internal void _tr_stored_block(int buf, int stored_len, bool eof)
+ {
+ send_bits((STORED_BLOCK << 1) + (eof ? 1 : 0), 3); // send block type
+ copy_block(buf, stored_len, true); // with header
+ }
+
+ // Determine the best encoding for the current block: dynamic trees, static
+ // trees or store, and output the encoded block to the zip file.
+ internal void _tr_flush_block(int buf, int stored_len, bool eof)
+ {
+ int opt_lenb, static_lenb; // opt_len and static_len in bytes
+ int max_blindex = 0; // index of last bit length code of non zero freq
+
+ // Build the Huffman trees unless a stored block is forced
+ if (compressionLevel > 0)
+ {
+ // Check if the file is ascii or binary
+ if (data_type == Z_UNKNOWN)
+ set_data_type();
+
+ // Construct the literal and distance trees
+ treeLiterals.build_tree(this);
+
+ treeDistances.build_tree(this);
+
+ // At this point, opt_len and static_len are the total bit lengths of
+ // the compressed block data, excluding the tree representations.
+
+ // Build the bit length tree for the above two trees, and get the index
+ // in bl_order of the last bit length code to send.
+ max_blindex = build_bl_tree();
+
+ // Determine the best encoding. Compute first the block length in bytes
+ opt_lenb = (opt_len + 3 + 7) >> 3;
+ static_lenb = (static_len + 3 + 7) >> 3;
+
+ if (static_lenb <= opt_lenb)
+ opt_lenb = static_lenb;
+ }
+ else
+ {
+ opt_lenb = static_lenb = stored_len + 5; // force a stored block
+ }
+
+ if (stored_len + 4 <= opt_lenb && buf != -1)
+ {
+ // 4: two words for the lengths
+ // The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
+ // Otherwise we can't have processed more than WSIZE input bytes since
+ // the last block flush, because compression would have been
+ // successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
+ // transform a block into a stored block.
+ _tr_stored_block(buf, stored_len, eof);
+ }
+ else if (static_lenb == opt_lenb)
+ {
+ send_bits((STATIC_TREES << 1) + (eof ? 1 : 0), 3);
+ send_compressed_block(StaticTree.lengthAndLiteralsTreeCodes, StaticTree.distTreeCodes);
+ }
+ else
+ {
+ send_bits((DYN_TREES << 1) + (eof ? 1 : 0), 3);
+ send_all_trees(treeLiterals.max_code + 1, treeDistances.max_code + 1, max_blindex + 1);
+ send_compressed_block(dyn_ltree, dyn_dtree);
+ }
+
+ // The above check is made mod 2^32, for files larger than 512 MB
+ // and uLong implemented on 32 bits.
+
+ _InitializeBlocks();
+
+ if (eof)
+ {
+ bi_windup();
+ }
+ }
+
+ // Fill the window when the lookahead becomes insufficient.
+ // Updates strstart and lookahead.
+ //
+ // IN assertion: lookahead < MIN_LOOKAHEAD
+ // OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
+ // At least one byte has been read, or avail_in == 0; reads are
+ // performed for at least two bytes (required for the zip translate_eol
+ // option -- not supported here).
+ private void _fillWindow()
+ {
+ int n, m;
+ int p;
+ int more; // Amount of free space at the end of the window.
+
+ do
+ {
+ more = (window_size - lookahead - strstart);
+
+ // Deal with !@#$% 64K limit:
+ if (more == 0 && strstart == 0 && lookahead == 0)
+ {
+ more = w_size;
+ }
+ else if (more == -1)
+ {
+ // Very unlikely, but possible on 16 bit machine if strstart == 0
+ // and lookahead == 1 (input done one byte at time)
+ more--;
+
+ // If the window is almost full and there is insufficient lookahead,
+ // move the upper half to the lower one to make room in the upper half.
+ }
+ else if (strstart >= w_size + w_size - MIN_LOOKAHEAD)
+ {
+ Array.Copy(window, w_size, window, 0, w_size);
+ match_start -= w_size;
+ strstart -= w_size; // we now have strstart >= MAX_DIST
+ block_start -= w_size;
+
+ // Slide the hash table (could be avoided with 32 bit values
+ // at the expense of memory usage). We slide even when level == 0
+ // to keep the hash table consistent if we switch back to level > 0
+ // later. (Using level 0 permanently is not an optimal usage of
+ // zlib, so we don't care about this pathological case.)
+
+ n = hash_size;
+ p = n;
+ do
+ {
+ m = (head[--p] & 0xffff);
+ head[p] = (short)((m >= w_size) ? (m - w_size) : 0);
+ }
+ while (--n != 0);
+
+ n = w_size;
+ p = n;
+ do
+ {
+ m = (prev[--p] & 0xffff);
+ prev[p] = (short)((m >= w_size) ? (m - w_size) : 0);
+ // If n is not on any hash chain, prev[n] is garbage but
+ // its value will never be used.
+ }
+ while (--n != 0);
+ more += w_size;
+ }
+
+ if (_codec.AvailableBytesIn == 0)
+ return;
+
+ // If there was no sliding:
+ // strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
+ // more == window_size - lookahead - strstart
+ // => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
+ // => more >= window_size - 2*WSIZE + 2
+ // In the BIG_MEM or MMAP case (not yet supported),
+ // window_size == input_size + MIN_LOOKAHEAD &&
+ // strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
+ // Otherwise, window_size == 2*WSIZE so more >= 2.
+ // If there was sliding, more >= WSIZE. So in all cases, more >= 2.
+
+ n = _codec.read_buf(window, strstart + lookahead, more);
+ lookahead += n;
+
+ // Initialize the hash value now that we have some input:
+ if (lookahead >= MIN_MATCH)
+ {
+ ins_h = window[strstart] & 0xff;
+ ins_h = (((ins_h) << hash_shift) ^ (window[strstart + 1] & 0xff)) & hash_mask;
+ }
+ // If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
+ // but this is not important since only literal bytes will be emitted.
+ }
+ while (lookahead < MIN_LOOKAHEAD && _codec.AvailableBytesIn != 0);
+ }
+
+ // Compress as much as possible from the input stream, return the current
+ // block state.
+ // This function does not perform lazy evaluation of matches and inserts
+ // new strings in the dictionary only for unmatched strings or for short
+ // matches. It is used only for the fast compression options.
+ internal BlockState DeflateFast(FlushType flush)
+ {
+ // short hash_head = 0; // head of the hash chain
+ int hash_head = 0; // head of the hash chain
+ bool bflush; // set if current block must be flushed
+
+ while (true)
+ {
+ // Make sure that we always have enough lookahead, except
+ // at the end of the input file. We need MAX_MATCH bytes
+ // for the next match, plus MIN_MATCH bytes to insert the
+ // string following the next match.
+ if (lookahead < MIN_LOOKAHEAD)
+ {
+ _fillWindow();
+ if (lookahead < MIN_LOOKAHEAD && flush == FlushType.None)
+ {
+ return BlockState.NeedMore;
+ }
+ if (lookahead == 0)
+ break; // flush the current block
+ }
+
+ // Insert the string window[strstart .. strstart+2] in the
+ // dictionary, and set hash_head to the head of the hash chain:
+ if (lookahead >= MIN_MATCH)
+ {
+ ins_h = (((ins_h) << hash_shift) ^ (window[(strstart) + (MIN_MATCH - 1)] & 0xff)) & hash_mask;
+
+ // prev[strstart&w_mask]=hash_head=head[ins_h];
+ hash_head = (head[ins_h] & 0xffff);
+ prev[strstart & w_mask] = head[ins_h];
+ head[ins_h] = unchecked((short)strstart);
+ }
+
+ // Find the longest match, discarding those <= prev_length.
+ // At this point we have always match_length < MIN_MATCH
+
+ if (hash_head != 0L && ((strstart - hash_head) & 0xffff) <= w_size - MIN_LOOKAHEAD)
+ {
+ // To simplify the code, we prevent matches with the string
+ // of window index 0 (in particular we have to avoid a match
+ // of the string with itself at the start of the input file).
+ if (compressionStrategy != CompressionStrategy.HuffmanOnly)
+ {
+ match_length = longest_match(hash_head);
+ }
+ // longest_match() sets match_start
+ }
+ if (match_length >= MIN_MATCH)
+ {
+ // check_match(strstart, match_start, match_length);
+
+ bflush = _tr_tally(strstart - match_start, match_length - MIN_MATCH);
+
+ lookahead -= match_length;
+
+ // Insert new strings in the hash table only if the match length
+ // is not too large. This saves time but degrades compression.
+ if (match_length <= config.MaxLazy && lookahead >= MIN_MATCH)
+ {
+ match_length--; // string at strstart already in hash table
+ do
+ {
+ strstart++;
+
+ ins_h = ((ins_h << hash_shift) ^ (window[(strstart) + (MIN_MATCH - 1)] & 0xff)) & hash_mask;
+ // prev[strstart&w_mask]=hash_head=head[ins_h];
+ hash_head = (head[ins_h] & 0xffff);
+ prev[strstart & w_mask] = head[ins_h];
+ head[ins_h] = unchecked((short)strstart);
+
+ // strstart never exceeds WSIZE-MAX_MATCH, so there are
+ // always MIN_MATCH bytes ahead.
+ }
+ while (--match_length != 0);
+ strstart++;
+ }
+ else
+ {
+ strstart += match_length;
+ match_length = 0;
+ ins_h = window[strstart] & 0xff;
+
+ ins_h = (((ins_h) << hash_shift) ^ (window[strstart + 1] & 0xff)) & hash_mask;
+ // If lookahead < MIN_MATCH, ins_h is garbage, but it does not
+ // matter since it will be recomputed at next deflate call.
+ }
+ }
+ else
+ {
+ // No match, output a literal byte
+
+ bflush = _tr_tally(0, window[strstart] & 0xff);
+ lookahead--;
+ strstart++;
+ }
+ if (bflush)
+ {
+ flush_block_only(false);
+ if (_codec.AvailableBytesOut == 0)
+ return BlockState.NeedMore;
+ }
+ }
+
+ flush_block_only(flush == FlushType.Finish);
+ if (_codec.AvailableBytesOut == 0)
+ {
+ if (flush == FlushType.Finish)
+ return BlockState.FinishStarted;
+ else
+ return BlockState.NeedMore;
+ }
+ return flush == FlushType.Finish ? BlockState.FinishDone : BlockState.BlockDone;
+ }
+
+ // Same as above, but achieves better compression. We use a lazy
+ // evaluation for matches: a match is finally adopted only if there is
+ // no better match at the next window position.
+ internal BlockState DeflateSlow(FlushType flush)
+ {
+ // short hash_head = 0; // head of hash chain
+ int hash_head = 0; // head of hash chain
+ bool bflush; // set if current block must be flushed
+
+ // Process the input block.
+ while (true)
+ {
+ // Make sure that we always have enough lookahead, except
+ // at the end of the input file. We need MAX_MATCH bytes
+ // for the next match, plus MIN_MATCH bytes to insert the
+ // string following the next match.
+
+ if (lookahead < MIN_LOOKAHEAD)
+ {
+ _fillWindow();
+ if (lookahead < MIN_LOOKAHEAD && flush == FlushType.None)
+ return BlockState.NeedMore;
+
+ if (lookahead == 0)
+ break; // flush the current block
+ }
+
+ // Insert the string window[strstart .. strstart+2] in the
+ // dictionary, and set hash_head to the head of the hash chain:
+
+ if (lookahead >= MIN_MATCH)
+ {
+ ins_h = (((ins_h) << hash_shift) ^ (window[(strstart) + (MIN_MATCH - 1)] & 0xff)) & hash_mask;
+ // prev[strstart&w_mask]=hash_head=head[ins_h];
+ hash_head = (head[ins_h] & 0xffff);
+ prev[strstart & w_mask] = head[ins_h];
+ head[ins_h] = unchecked((short)strstart);
+ }
+
+ // Find the longest match, discarding those <= prev_length.
+ prev_length = match_length;
+ prev_match = match_start;
+ match_length = MIN_MATCH - 1;
+
+ if (hash_head != 0 && prev_length < config.MaxLazy &&
+ ((strstart - hash_head) & 0xffff) <= w_size - MIN_LOOKAHEAD)
+ {
+ // To simplify the code, we prevent matches with the string
+ // of window index 0 (in particular we have to avoid a match
+ // of the string with itself at the start of the input file).
+
+ if (compressionStrategy != CompressionStrategy.HuffmanOnly)
+ {
+ match_length = longest_match(hash_head);
+ }
+ // longest_match() sets match_start
+
+ if (match_length <= 5 && (compressionStrategy == CompressionStrategy.Filtered ||
+ (match_length == MIN_MATCH && strstart - match_start > 4096)))
+ {
+
+ // If prev_match is also MIN_MATCH, match_start is garbage
+ // but we will ignore the current match anyway.
+ match_length = MIN_MATCH - 1;
+ }
+ }
+
+ // If there was a match at the previous step and the current
+ // match is not better, output the previous match:
+ if (prev_length >= MIN_MATCH && match_length <= prev_length)
+ {
+ int max_insert = strstart + lookahead - MIN_MATCH;
+ // Do not insert strings in hash table beyond this.
+
+ // check_match(strstart-1, prev_match, prev_length);
+
+ bflush = _tr_tally(strstart - 1 - prev_match, prev_length - MIN_MATCH);
+
+ // Insert in hash table all strings up to the end of the match.
+ // strstart-1 and strstart are already inserted. If there is not
+ // enough lookahead, the last two strings are not inserted in
+ // the hash table.
+ lookahead -= (prev_length - 1);
+ prev_length -= 2;
+ do
+ {
+ if (++strstart <= max_insert)
+ {
+ ins_h = (((ins_h) << hash_shift) ^ (window[(strstart) + (MIN_MATCH - 1)] & 0xff)) & hash_mask;
+ //prev[strstart&w_mask]=hash_head=head[ins_h];
+ hash_head = (head[ins_h] & 0xffff);
+ prev[strstart & w_mask] = head[ins_h];
+ head[ins_h] = unchecked((short)strstart);
+ }
+ }
+ while (--prev_length != 0);
+ match_available = 0;
+ match_length = MIN_MATCH - 1;
+ strstart++;
+
+ if (bflush)
+ {
+ flush_block_only(false);
+ if (_codec.AvailableBytesOut == 0)
+ return BlockState.NeedMore;
+ }
+ }
+ else if (match_available != 0)
+ {
+
+ // If there was no match at the previous position, output a
+ // single literal. If there was a match but the current match
+ // is longer, truncate the previous match to a single literal.
+
+ bflush = _tr_tally(0, window[strstart - 1] & 0xff);
+
+ if (bflush)
+ {
+ flush_block_only(false);
+ }
+ strstart++;
+ lookahead--;
+ if (_codec.AvailableBytesOut == 0)
+ return BlockState.NeedMore;
+ }
+ else
+ {
+ // There is no previous match to compare with, wait for
+ // the next step to decide.
+
+ match_available = 1;
+ strstart++;
+ lookahead--;
+ }
+ }
+
+ if (match_available != 0)
+ {
+ bflush = _tr_tally(0, window[strstart - 1] & 0xff);
+ match_available = 0;
+ }
+ flush_block_only(flush == FlushType.Finish);
+
+ if (_codec.AvailableBytesOut == 0)
+ {
+ if (flush == FlushType.Finish)
+ return BlockState.FinishStarted;
+ else
+ return BlockState.NeedMore;
+ }
+
+ return flush == FlushType.Finish ? BlockState.FinishDone : BlockState.BlockDone;
+ }
+
+
+ internal int longest_match(int cur_match)
+ {
+ int chain_length = config.MaxChainLength; // max hash chain length
+ int scan = strstart; // current string
+ int match; // matched string
+ int len; // length of current match
+ int best_len = prev_length; // best match length so far
+ int limit = strstart > (w_size - MIN_LOOKAHEAD) ? strstart - (w_size - MIN_LOOKAHEAD) : 0;
+
+ int niceLength = config.NiceLength;
+
+ // Stop when cur_match becomes <= limit. To simplify the code,
+ // we prevent matches with the string of window index 0.
+
+ int wmask = w_mask;
+
+ int strend = strstart + MAX_MATCH;
+ byte scan_end1 = window[scan + best_len - 1];
+ byte scan_end = window[scan + best_len];
+
+ // The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
+ // It is easy to get rid of this optimization if necessary.
+
+ // Do not waste too much time if we already have a good match:
+ if (prev_length >= config.GoodLength)
+ {
+ chain_length >>= 2;
+ }
+
+ // Do not look for matches beyond the end of the input. This is necessary
+ // to make deflate deterministic.
+ if (niceLength > lookahead)
+ niceLength = lookahead;
+
+ do
+ {
+ match = cur_match;
+
+ // Skip to next match if the match length cannot increase
+ // or if the match length is less than 2:
+ if (window[match + best_len] != scan_end ||
+ window[match + best_len - 1] != scan_end1 ||
+ window[match] != window[scan] ||
+ window[++match] != window[scan + 1])
+ continue;
+
+ // The check at best_len-1 can be removed because it will be made
+ // again later. (This heuristic is not always a win.)
+ // It is not necessary to compare scan[2] and match[2] since they
+ // are always equal when the other bytes match, given that
+ // the hash keys are equal and that HASH_BITS >= 8.
+ scan += 2; match++;
+
+ // We check for insufficient lookahead only every 8th comparison;
+ // the 256th check will be made at strstart+258.
+ do
+ {
+ }
+ while (window[++scan] == window[++match] &&
+ window[++scan] == window[++match] &&
+ window[++scan] == window[++match] &&
+ window[++scan] == window[++match] &&
+ window[++scan] == window[++match] &&
+ window[++scan] == window[++match] &&
+ window[++scan] == window[++match] &&
+ window[++scan] == window[++match] && scan < strend);
+
+ len = MAX_MATCH - (int)(strend - scan);
+ scan = strend - MAX_MATCH;
+
+ if (len > best_len)
+ {
+ match_start = cur_match;
+ best_len = len;
+ if (len >= niceLength)
+ break;
+ scan_end1 = window[scan + best_len - 1];
+ scan_end = window[scan + best_len];
+ }
+ }
+ while ((cur_match = (prev[cur_match & wmask] & 0xffff)) > limit && --chain_length != 0);
+
+ if (best_len <= lookahead)
+ return best_len;
+ return lookahead;
+ }
+
+
+ private bool Rfc1950BytesEmitted = false;
+ private bool _WantRfc1950HeaderBytes = true;
+ internal bool WantRfc1950HeaderBytes
+ {
+ get { return _WantRfc1950HeaderBytes; }
+ set { _WantRfc1950HeaderBytes = value; }
+ }
+
+
+ internal int Initialize(ZlibCodec codec, CompressionLevel level)
+ {
+ return Initialize(codec, level, ZlibConstants.WindowBitsMax);
+ }
+
+ internal int Initialize(ZlibCodec codec, CompressionLevel level, int bits)
+ {
+ return Initialize(codec, level, bits, MEM_LEVEL_DEFAULT, CompressionStrategy.Default);
+ }
+
+ internal int Initialize(ZlibCodec codec, CompressionLevel level, int bits, CompressionStrategy compressionStrategy)
+ {
+ return Initialize(codec, level, bits, MEM_LEVEL_DEFAULT, compressionStrategy);
+ }
+
+ internal int Initialize(ZlibCodec codec, CompressionLevel level, int windowBits, int memLevel, CompressionStrategy strategy)
+ {
+ _codec = codec;
+ _codec.Message = null;
+
+ // validation
+ if (windowBits < 9 || windowBits > 15)
+ throw new ZlibException("windowBits must be in the range 9..15.");
+
+ if (memLevel < 1 || memLevel > MEM_LEVEL_MAX)
+ throw new ZlibException(String.Format("memLevel must be in the range 1.. {0}", MEM_LEVEL_MAX));
+
+ _codec.dstate = this;
+
+ w_bits = windowBits;
+ w_size = 1 << w_bits;
+ w_mask = w_size - 1;
+
+ hash_bits = memLevel + 7;
+ hash_size = 1 << hash_bits;
+ hash_mask = hash_size - 1;
+ hash_shift = ((hash_bits + MIN_MATCH - 1) / MIN_MATCH);
+
+ window = new byte[w_size * 2];
+ prev = new short[w_size];
+ head = new short[hash_size];
+
+ // for memLevel==8, this will be 16384, 16k
+ lit_bufsize = 1 << (memLevel + 6);
+
+ // Use a single array as the buffer for data pending compression,
+ // the output distance codes, and the output length codes (aka tree).
+ // orig comment: This works just fine since the average
+ // output size for (length,distance) codes is <= 24 bits.
+ pending = new byte[lit_bufsize * 4];
+ _distanceOffset = lit_bufsize;
+ _lengthOffset = (1 + 2) * lit_bufsize;
+
+ // So, for memLevel 8, the length of the pending buffer is 65536. 64k.
+ // The first 16k are pending bytes.
+ // The middle slice, of 32k, is used for distance codes.
+ // The final 16k are length codes.
+
+ this.compressionLevel = level;
+ this.compressionStrategy = strategy;
+
+ Reset();
+ return ZlibConstants.Z_OK;
+ }
+
+
+ internal void Reset()
+ {
+ _codec.TotalBytesIn = _codec.TotalBytesOut = 0;
+ _codec.Message = null;
+ //strm.data_type = Z_UNKNOWN;
+
+ pendingCount = 0;
+ nextPending = 0;
+
+ Rfc1950BytesEmitted = false;
+
+ status = (WantRfc1950HeaderBytes) ? INIT_STATE : BUSY_STATE;
+ _codec._Adler32 = Adler.Adler32(0, null, 0, 0);
+
+ last_flush = (int)FlushType.None;
+
+ _InitializeTreeData();
+ _InitializeLazyMatch();
+ }
+
+
+ internal int End()
+ {
+ if (status != INIT_STATE && status != BUSY_STATE && status != FINISH_STATE)
+ {
+ return ZlibConstants.Z_STREAM_ERROR;
+ }
+ // Deallocate in reverse order of allocations:
+ pending = null;
+ head = null;
+ prev = null;
+ window = null;
+ // free
+ // dstate=null;
+ return status == BUSY_STATE ? ZlibConstants.Z_DATA_ERROR : ZlibConstants.Z_OK;
+ }
+
+
+ private void SetDeflater()
+ {
+ switch (config.Flavor)
+ {
+ case DeflateFlavor.Store:
+ DeflateFunction = DeflateNone;
+ break;
+ case DeflateFlavor.Fast:
+ DeflateFunction = DeflateFast;
+ break;
+ case DeflateFlavor.Slow:
+ DeflateFunction = DeflateSlow;
+ break;
+ }
+ }
+
+
+ internal int SetParams(CompressionLevel level, CompressionStrategy strategy)
+ {
+ int result = ZlibConstants.Z_OK;
+
+ if (compressionLevel != level)
+ {
+ Config newConfig = Config.Lookup(level);
+
+ // change in the deflate flavor (Fast vs slow vs none)?
+ if (newConfig.Flavor != config.Flavor && _codec.TotalBytesIn != 0)
+ {
+ // Flush the last buffer:
+ result = _codec.Deflate(FlushType.Partial);
+ }
+
+ compressionLevel = level;
+ config = newConfig;
+ SetDeflater();
+ }
+
+ // no need to flush with change in strategy? Really?
+ compressionStrategy = strategy;
+
+ return result;
+ }
+
+
+ internal int SetDictionary(byte[] dictionary)
+ {
+ int length = dictionary.Length;
+ int index = 0;
+
+ if (dictionary == null || status != INIT_STATE)
+ throw new ZlibException("Stream error.");
+
+ _codec._Adler32 = Adler.Adler32(_codec._Adler32, dictionary, 0, dictionary.Length);
+
+ if (length < MIN_MATCH)
+ return ZlibConstants.Z_OK;
+ if (length > w_size - MIN_LOOKAHEAD)
+ {
+ length = w_size - MIN_LOOKAHEAD;
+ index = dictionary.Length - length; // use the tail of the dictionary
+ }
+ Array.Copy(dictionary, index, window, 0, length);
+ strstart = length;
+ block_start = length;
+
+ // Insert all strings in the hash table (except for the last two bytes).
+ // s->lookahead stays null, so s->ins_h will be recomputed at the next
+ // call of fill_window.
+
+ ins_h = window[0] & 0xff;
+ ins_h = (((ins_h) << hash_shift) ^ (window[1] & 0xff)) & hash_mask;
+
+ for (int n = 0; n <= length - MIN_MATCH; n++)
+ {
+ ins_h = (((ins_h) << hash_shift) ^ (window[(n) + (MIN_MATCH - 1)] & 0xff)) & hash_mask;
+ prev[n & w_mask] = head[ins_h];
+ head[ins_h] = (short)n;
+ }
+ return ZlibConstants.Z_OK;
+ }
+
+
+
+ internal int Deflate(FlushType flush)
+ {
+ int old_flush;
+
+ if (_codec.OutputBuffer == null ||
+ (_codec.InputBuffer == null && _codec.AvailableBytesIn != 0) ||
+ (status == FINISH_STATE && flush != FlushType.Finish))
+ {
+ _codec.Message = _ErrorMessage[ZlibConstants.Z_NEED_DICT - (ZlibConstants.Z_STREAM_ERROR)];
+ throw new ZlibException(String.Format("Something is fishy. [{0}]", _codec.Message));
+ }
+ if (_codec.AvailableBytesOut == 0)
+ {
+ _codec.Message = _ErrorMessage[ZlibConstants.Z_NEED_DICT - (ZlibConstants.Z_BUF_ERROR)];
+ throw new ZlibException("OutputBuffer is full (AvailableBytesOut == 0)");
+ }
+
+ old_flush = last_flush;
+ last_flush = (int)flush;
+
+ // Write the zlib (rfc1950) header bytes
+ if (status == INIT_STATE)
+ {
+ int header = (Z_DEFLATED + ((w_bits - 8) << 4)) << 8;
+ int level_flags = (((int)compressionLevel - 1) & 0xff) >> 1;
+
+ if (level_flags > 3)
+ level_flags = 3;
+ header |= (level_flags << 6);
+ if (strstart != 0)
+ header |= PRESET_DICT;
+ header += 31 - (header % 31);
+
+ status = BUSY_STATE;
+ //putShortMSB(header);
+ unchecked
+ {
+ pending[pendingCount++] = (byte)(header >> 8);
+ pending[pendingCount++] = (byte)header;
+ }
+ // Save the adler32 of the preset dictionary:
+ if (strstart != 0)
+ {
+ pending[pendingCount++] = (byte)((_codec._Adler32 & 0xFF000000) >> 24);
+ pending[pendingCount++] = (byte)((_codec._Adler32 & 0x00FF0000) >> 16);
+ pending[pendingCount++] = (byte)((_codec._Adler32 & 0x0000FF00) >> 8);
+ pending[pendingCount++] = (byte)(_codec._Adler32 & 0x000000FF);
+ }
+ _codec._Adler32 = Adler.Adler32(0, null, 0, 0);
+ }
+
+ // Flush as much pending output as possible
+ if (pendingCount != 0)
+ {
+ _codec.flush_pending();
+ if (_codec.AvailableBytesOut == 0)
+ {
+ //System.out.println(" avail_out==0");
+ // Since avail_out is 0, deflate will be called again with
+ // more output space, but possibly with both pending and
+ // avail_in equal to zero. There won't be anything to do,
+ // but this is not an error situation so make sure we
+ // return OK instead of BUF_ERROR at next call of deflate:
+ last_flush = -1;
+ return ZlibConstants.Z_OK;
+ }
+
+ // Make sure there is something to do and avoid duplicate consecutive
+ // flushes. For repeated and useless calls with Z_FINISH, we keep
+ // returning Z_STREAM_END instead of Z_BUFF_ERROR.
+ }
+ else if (_codec.AvailableBytesIn == 0 &&
+ (int)flush <= old_flush &&
+ flush != FlushType.Finish)
+ {
+ // workitem 8557
+ //
+ // Not sure why this needs to be an error. pendingCount == 0, which
+ // means there's nothing to deflate. And the caller has not asked
+ // for a FlushType.Finish, but... that seems very non-fatal. We
+ // can just say "OK" and do nothing.
+
+ // _codec.Message = z_errmsg[ZlibConstants.Z_NEED_DICT - (ZlibConstants.Z_BUF_ERROR)];
+ // throw new ZlibException("AvailableBytesIn == 0 && flush<=old_flush && flush != FlushType.Finish");
+
+ return ZlibConstants.Z_OK;
+ }
+
+ // User must not provide more input after the first FINISH:
+ if (status == FINISH_STATE && _codec.AvailableBytesIn != 0)
+ {
+ _codec.Message = _ErrorMessage[ZlibConstants.Z_NEED_DICT - (ZlibConstants.Z_BUF_ERROR)];
+ throw new ZlibException("status == FINISH_STATE && _codec.AvailableBytesIn != 0");
+ }
+
+ // Start a new block or continue the current one.
+ if (_codec.AvailableBytesIn != 0 || lookahead != 0 || (flush != FlushType.None && status != FINISH_STATE))
+ {
+ BlockState bstate = DeflateFunction(flush);
+
+ if (bstate == BlockState.FinishStarted || bstate == BlockState.FinishDone)
+ {
+ status = FINISH_STATE;
+ }
+ if (bstate == BlockState.NeedMore || bstate == BlockState.FinishStarted)
+ {
+ if (_codec.AvailableBytesOut == 0)
+ {
+ last_flush = -1; // avoid BUF_ERROR next call, see above
+ }
+ return ZlibConstants.Z_OK;
+ // If flush != Z_NO_FLUSH && avail_out == 0, the next call
+ // of deflate should use the same flush parameter to make sure
+ // that the flush is complete. So we don't have to output an
+ // empty block here, this will be done at next call. This also
+ // ensures that for a very small output buffer, we emit at most
+ // one empty block.
+ }
+
+ if (bstate == BlockState.BlockDone)
+ {
+ if (flush == FlushType.Partial)
+ {
+ _tr_align();
+ }
+ else
+ {
+ // FlushType.Full or FlushType.Sync
+ _tr_stored_block(0, 0, false);
+ // For a full flush, this empty block will be recognized
+ // as a special marker by inflate_sync().
+ if (flush == FlushType.Full)
+ {
+ // clear hash (forget the history)
+ for (int i = 0; i < hash_size; i++)
+ head[i] = 0;
+ }
+ }
+ _codec.flush_pending();
+ if (_codec.AvailableBytesOut == 0)
+ {
+ last_flush = -1; // avoid BUF_ERROR at next call, see above
+ return ZlibConstants.Z_OK;
+ }
+ }
+ }
+
+ if (flush != FlushType.Finish)
+ return ZlibConstants.Z_OK;
+
+ if (!WantRfc1950HeaderBytes || Rfc1950BytesEmitted)
+ return ZlibConstants.Z_STREAM_END;
+
+ // Write the zlib trailer (adler32)
+ pending[pendingCount++] = (byte)((_codec._Adler32 & 0xFF000000) >> 24);
+ pending[pendingCount++] = (byte)((_codec._Adler32 & 0x00FF0000) >> 16);
+ pending[pendingCount++] = (byte)((_codec._Adler32 & 0x0000FF00) >> 8);
+ pending[pendingCount++] = (byte)(_codec._Adler32 & 0x000000FF);
+ //putShortMSB((int)(SharedUtils.URShift(_codec._Adler32, 16)));
+ //putShortMSB((int)(_codec._Adler32 & 0xffff));
+
+ _codec.flush_pending();
+
+ // If avail_out is zero, the application will call deflate again
+ // to flush the rest.
+
+ Rfc1950BytesEmitted = true; // write the trailer only once!
+
+ return pendingCount != 0 ? ZlibConstants.Z_OK : ZlibConstants.Z_STREAM_END;
+ }
+
+ }
+}
\ No newline at end of file
--- /dev/null
+// DeflateStream.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009-2010 Dino Chiesa.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-July-31 14:48:11>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the DeflateStream class, which can be used as a replacement for
+// the System.IO.Compression.DeflateStream class in the .NET BCL.
+//
+// ------------------------------------------------------------------
+
+
+using System;
+
+namespace Ionic.Zlib
+{
+ /// <summary>
+ /// A class for compressing and decompressing streams using the Deflate algorithm.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// The DeflateStream is a <see
+ /// href="http://en.wikipedia.org/wiki/Decorator_pattern">Decorator</see> on a <see
+ /// cref="System.IO.Stream"/>. It adds DEFLATE compression or decompression to any
+ /// stream.
+ /// </para>
+ ///
+ /// <para>
+ /// Using this stream, applications can compress or decompress data via stream
+ /// <c>Read</c> and <c>Write</c> operations. Either compresssion or decompression
+ /// can occur through either reading or writing. The compression format used is
+ /// DEFLATE, which is documented in <see
+ /// href="http://www.ietf.org/rfc/rfc1951.txt">IETF RFC 1951</see>, "DEFLATE
+ /// Compressed Data Format Specification version 1.3.".
+ /// </para>
+ ///
+ /// <para>
+ /// This class is similar to <see cref="ZlibStream"/>, except that
+ /// <c>ZlibStream</c> adds the <see href="http://www.ietf.org/rfc/rfc1950.txt">RFC
+ /// 1950 - ZLIB</see> framing bytes to a compressed stream when compressing, or
+ /// expects the RFC1950 framing bytes when decompressing. The <c>DeflateStream</c>
+ /// does not.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <seealso cref="ZlibStream" />
+ /// <seealso cref="GZipStream" />
+ internal class DeflateStream : System.IO.Stream
+ {
+ internal ZlibBaseStream _baseStream;
+ internal System.IO.Stream _innerStream;
+ bool _disposed;
+
+ /// <summary>
+ /// Create a DeflateStream using the specified CompressionMode.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// When mode is <c>CompressionMode.Compress</c>, the DeflateStream will use
+ /// the default compression level. The "captive" stream will be closed when
+ /// the DeflateStream is closed.
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example uses a DeflateStream to compress data from a file, and writes
+ /// the compressed data to another file.
+ /// <code>
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
+ /// {
+ /// using (var raw = System.IO.File.Create(fileToCompress + ".deflated"))
+ /// {
+ /// using (Stream compressor = new DeflateStream(raw, CompressionMode.Compress))
+ /// {
+ /// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
+ /// int n;
+ /// while ((n= input.Read(buffer, 0, buffer.Length)) != 0)
+ /// {
+ /// compressor.Write(buffer, 0, n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using input As Stream = File.OpenRead(fileToCompress)
+ /// Using raw As FileStream = File.Create(fileToCompress & ".deflated")
+ /// Using compressor As Stream = New DeflateStream(raw, CompressionMode.Compress)
+ /// Dim buffer As Byte() = New Byte(4096) {}
+ /// Dim n As Integer = -1
+ /// Do While (n <> 0)
+ /// If (n > 0) Then
+ /// compressor.Write(buffer, 0, n)
+ /// End If
+ /// n = input.Read(buffer, 0, buffer.Length)
+ /// Loop
+ /// End Using
+ /// End Using
+ /// End Using
+ /// </code>
+ /// </example>
+ /// <param name="stream">The stream which will be read or written.</param>
+ /// <param name="mode">Indicates whether the DeflateStream will compress or decompress.</param>
+ public DeflateStream(System.IO.Stream stream, CompressionMode mode)
+ : this(stream, mode, CompressionLevel.Default, false)
+ {
+ }
+
+ /// <summary>
+ /// Create a DeflateStream using the specified CompressionMode and the specified CompressionLevel.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// When mode is <c>CompressionMode.Decompress</c>, the level parameter is
+ /// ignored. The "captive" stream will be closed when the DeflateStream is
+ /// closed.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example uses a DeflateStream to compress data from a file, and writes
+ /// the compressed data to another file.
+ ///
+ /// <code>
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
+ /// {
+ /// using (var raw = System.IO.File.Create(fileToCompress + ".deflated"))
+ /// {
+ /// using (Stream compressor = new DeflateStream(raw,
+ /// CompressionMode.Compress,
+ /// CompressionLevel.BestCompression))
+ /// {
+ /// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
+ /// int n= -1;
+ /// while (n != 0)
+ /// {
+ /// if (n > 0)
+ /// compressor.Write(buffer, 0, n);
+ /// n= input.Read(buffer, 0, buffer.Length);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using input As Stream = File.OpenRead(fileToCompress)
+ /// Using raw As FileStream = File.Create(fileToCompress & ".deflated")
+ /// Using compressor As Stream = New DeflateStream(raw, CompressionMode.Compress, CompressionLevel.BestCompression)
+ /// Dim buffer As Byte() = New Byte(4096) {}
+ /// Dim n As Integer = -1
+ /// Do While (n <> 0)
+ /// If (n > 0) Then
+ /// compressor.Write(buffer, 0, n)
+ /// End If
+ /// n = input.Read(buffer, 0, buffer.Length)
+ /// Loop
+ /// End Using
+ /// End Using
+ /// End Using
+ /// </code>
+ /// </example>
+ /// <param name="stream">The stream to be read or written while deflating or inflating.</param>
+ /// <param name="mode">Indicates whether the <c>DeflateStream</c> will compress or decompress.</param>
+ /// <param name="level">A tuning knob to trade speed for effectiveness.</param>
+ public DeflateStream(System.IO.Stream stream, CompressionMode mode, CompressionLevel level)
+ : this(stream, mode, level, false)
+ {
+ }
+
+ /// <summary>
+ /// Create a <c>DeflateStream</c> using the specified
+ /// <c>CompressionMode</c>, and explicitly specify whether the
+ /// stream should be left open after Deflation or Inflation.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This constructor allows the application to request that the captive stream
+ /// remain open after the deflation or inflation occurs. By default, after
+ /// <c>Close()</c> is called on the stream, the captive stream is also
+ /// closed. In some cases this is not desired, for example if the stream is a
+ /// memory stream that will be re-read after compression. Specify true for
+ /// the <paramref name="leaveOpen"/> parameter to leave the stream open.
+ /// </para>
+ ///
+ /// <para>
+ /// The <c>DeflateStream</c> will use the default compression level.
+ /// </para>
+ ///
+ /// <para>
+ /// See the other overloads of this constructor for example code.
+ /// </para>
+ /// </remarks>
+ ///
+ /// <param name="stream">
+ /// The stream which will be read or written. This is called the
+ /// "captive" stream in other places in this documentation.
+ /// </param>
+ ///
+ /// <param name="mode">
+ /// Indicates whether the <c>DeflateStream</c> will compress or decompress.
+ /// </param>
+ ///
+ /// <param name="leaveOpen">true if the application would like the stream to
+ /// remain open after inflation/deflation.</param>
+ public DeflateStream(System.IO.Stream stream, CompressionMode mode, bool leaveOpen)
+ : this(stream, mode, CompressionLevel.Default, leaveOpen)
+ {
+ }
+
+ /// <summary>
+ /// Create a <c>DeflateStream</c> using the specified <c>CompressionMode</c>
+ /// and the specified <c>CompressionLevel</c>, and explicitly specify whether
+ /// the stream should be left open after Deflation or Inflation.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// When mode is <c>CompressionMode.Decompress</c>, the level parameter is ignored.
+ /// </para>
+ ///
+ /// <para>
+ /// This constructor allows the application to request that the captive stream
+ /// remain open after the deflation or inflation occurs. By default, after
+ /// <c>Close()</c> is called on the stream, the captive stream is also
+ /// closed. In some cases this is not desired, for example if the stream is a
+ /// <see cref="System.IO.MemoryStream"/> that will be re-read after
+ /// compression. Specify true for the <paramref name="leaveOpen"/> parameter
+ /// to leave the stream open.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to use a <c>DeflateStream</c> to compress data from
+ /// a file, and store the compressed data into another file.
+ ///
+ /// <code>
+ /// using (var output = System.IO.File.Create(fileToCompress + ".deflated"))
+ /// {
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
+ /// {
+ /// using (Stream compressor = new DeflateStream(output, CompressionMode.Compress, CompressionLevel.BestCompression, true))
+ /// {
+ /// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
+ /// int n= -1;
+ /// while (n != 0)
+ /// {
+ /// if (n > 0)
+ /// compressor.Write(buffer, 0, n);
+ /// n= input.Read(buffer, 0, buffer.Length);
+ /// }
+ /// }
+ /// }
+ /// // can write additional data to the output stream here
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using output As FileStream = File.Create(fileToCompress & ".deflated")
+ /// Using input As Stream = File.OpenRead(fileToCompress)
+ /// Using compressor As Stream = New DeflateStream(output, CompressionMode.Compress, CompressionLevel.BestCompression, True)
+ /// Dim buffer As Byte() = New Byte(4096) {}
+ /// Dim n As Integer = -1
+ /// Do While (n <> 0)
+ /// If (n > 0) Then
+ /// compressor.Write(buffer, 0, n)
+ /// End If
+ /// n = input.Read(buffer, 0, buffer.Length)
+ /// Loop
+ /// End Using
+ /// End Using
+ /// ' can write additional data to the output stream here.
+ /// End Using
+ /// </code>
+ /// </example>
+ /// <param name="stream">The stream which will be read or written.</param>
+ /// <param name="mode">Indicates whether the DeflateStream will compress or decompress.</param>
+ /// <param name="leaveOpen">true if the application would like the stream to remain open after inflation/deflation.</param>
+ /// <param name="level">A tuning knob to trade speed for effectiveness.</param>
+ public DeflateStream(System.IO.Stream stream, CompressionMode mode, CompressionLevel level, bool leaveOpen)
+ {
+ _innerStream = stream;
+ _baseStream = new ZlibBaseStream(stream, mode, level, ZlibStreamFlavor.DEFLATE, leaveOpen);
+ }
+
+ #region Zlib properties
+
+ /// <summary>
+ /// This property sets the flush behavior on the stream.
+ /// </summary>
+ /// <remarks> See the ZLIB documentation for the meaning of the flush behavior.
+ /// </remarks>
+ virtual public FlushType FlushMode
+ {
+ get { return (this._baseStream._flushMode); }
+ set
+ {
+ if (_disposed) throw new ObjectDisposedException("DeflateStream");
+ this._baseStream._flushMode = value;
+ }
+ }
+
+ /// <summary>
+ /// The size of the working buffer for the compression codec.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The working buffer is used for all stream operations. The default size is
+ /// 1024 bytes. The minimum size is 128 bytes. You may get better performance
+ /// with a larger buffer. Then again, you might not. You would have to test
+ /// it.
+ /// </para>
+ ///
+ /// <para>
+ /// Set this before the first call to <c>Read()</c> or <c>Write()</c> on the
+ /// stream. If you try to set it afterwards, it will throw.
+ /// </para>
+ /// </remarks>
+ public int BufferSize
+ {
+ get
+ {
+ return this._baseStream._bufferSize;
+ }
+ set
+ {
+ if (_disposed) throw new ObjectDisposedException("DeflateStream");
+ if (this._baseStream._workingBuffer != null)
+ throw new ZlibException("The working buffer is already set.");
+ if (value < ZlibConstants.WorkingBufferSizeMin)
+ throw new ZlibException(String.Format("Don't be silly. {0} bytes?? Use a bigger buffer, at least {1}.", value, ZlibConstants.WorkingBufferSizeMin));
+ this._baseStream._bufferSize = value;
+ }
+ }
+
+ /// <summary>
+ /// The ZLIB strategy to be used during compression.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// By tweaking this parameter, you may be able to optimize the compression for
+ /// data with particular characteristics.
+ /// </remarks>
+ public CompressionStrategy Strategy
+ {
+ get
+ {
+ return this._baseStream.Strategy;
+ }
+ set
+ {
+ if (_disposed) throw new ObjectDisposedException("DeflateStream");
+ this._baseStream.Strategy = value;
+ }
+ }
+
+ /// <summary> Returns the total number of bytes input so far.</summary>
+ virtual public long TotalIn
+ {
+ get
+ {
+ return this._baseStream._z.TotalBytesIn;
+ }
+ }
+
+ /// <summary> Returns the total number of bytes output so far.</summary>
+ virtual public long TotalOut
+ {
+ get
+ {
+ return this._baseStream._z.TotalBytesOut;
+ }
+ }
+
+ #endregion
+
+ #region System.IO.Stream methods
+ /// <summary>
+ /// Dispose the stream.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// This may or may not result in a <c>Close()</c> call on the captive
+ /// stream. See the constructors that have a <c>leaveOpen</c> parameter
+ /// for more information.
+ /// </para>
+ /// <para>
+ /// Application code won't call this code directly. This method may be
+ /// invoked in two distinct scenarios. If disposing == true, the method
+ /// has been called directly or indirectly by a user's code, for example
+ /// via the public Dispose() method. In this case, both managed and
+ /// unmanaged resources can be referenced and disposed. If disposing ==
+ /// false, the method has been called by the runtime from inside the
+ /// object finalizer and this method should not reference other objects;
+ /// in that case only unmanaged resources must be referenced or
+ /// disposed.
+ /// </para>
+ /// </remarks>
+ /// <param name="disposing">
+ /// true if the Dispose method was invoked by user code.
+ /// </param>
+ protected override void Dispose(bool disposing)
+ {
+ try
+ {
+ if (!_disposed)
+ {
+ if (disposing && (this._baseStream != null))
+ this._baseStream.Close();
+ _disposed = true;
+ }
+ }
+ finally
+ {
+ base.Dispose(disposing);
+ }
+ }
+
+
+
+ /// <summary>
+ /// Indicates whether the stream can be read.
+ /// </summary>
+ /// <remarks>
+ /// The return value depends on whether the captive stream supports reading.
+ /// </remarks>
+ public override bool CanRead
+ {
+ get
+ {
+ if (_disposed) throw new ObjectDisposedException("DeflateStream");
+ return _baseStream._stream.CanRead;
+ }
+ }
+
+ /// <summary>
+ /// Indicates whether the stream supports Seek operations.
+ /// </summary>
+ /// <remarks>
+ /// Always returns false.
+ /// </remarks>
+ public override bool CanSeek
+ {
+ get { return false; }
+ }
+
+
+ /// <summary>
+ /// Indicates whether the stream can be written.
+ /// </summary>
+ /// <remarks>
+ /// The return value depends on whether the captive stream supports writing.
+ /// </remarks>
+ public override bool CanWrite
+ {
+ get
+ {
+ if (_disposed) throw new ObjectDisposedException("DeflateStream");
+ return _baseStream._stream.CanWrite;
+ }
+ }
+
+ /// <summary>
+ /// Flush the stream.
+ /// </summary>
+ public override void Flush()
+ {
+ if (_disposed) throw new ObjectDisposedException("DeflateStream");
+ _baseStream.Flush();
+ }
+
+ /// <summary>
+ /// Reading this property always throws a <see cref="NotImplementedException"/>.
+ /// </summary>
+ public override long Length
+ {
+ get { throw new NotImplementedException(); }
+ }
+
+ /// <summary>
+ /// The position of the stream pointer.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Setting this property always throws a <see
+ /// cref="NotImplementedException"/>. Reading will return the total bytes
+ /// written out, if used in writing, or the total bytes read in, if used in
+ /// reading. The count may refer to compressed bytes or uncompressed bytes,
+ /// depending on how you've used the stream.
+ /// </remarks>
+ public override long Position
+ {
+ get
+ {
+ if (this._baseStream._streamMode == Ionic.Zlib.ZlibBaseStream.StreamMode.Writer)
+ return this._baseStream._z.TotalBytesOut;
+ if (this._baseStream._streamMode == Ionic.Zlib.ZlibBaseStream.StreamMode.Reader)
+ return this._baseStream._z.TotalBytesIn;
+ return 0;
+ }
+ set { throw new NotImplementedException(); }
+ }
+
+ /// <summary>
+ /// Read data from the stream.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// If you wish to use the <c>DeflateStream</c> to compress data while
+ /// reading, you can create a <c>DeflateStream</c> with
+ /// <c>CompressionMode.Compress</c>, providing an uncompressed data stream.
+ /// Then call Read() on that <c>DeflateStream</c>, and the data read will be
+ /// compressed as you read. If you wish to use the <c>DeflateStream</c> to
+ /// decompress data while reading, you can create a <c>DeflateStream</c> with
+ /// <c>CompressionMode.Decompress</c>, providing a readable compressed data
+ /// stream. Then call Read() on that <c>DeflateStream</c>, and the data read
+ /// will be decompressed as you read.
+ /// </para>
+ ///
+ /// <para>
+ /// A <c>DeflateStream</c> can be used for <c>Read()</c> or <c>Write()</c>, but not both.
+ /// </para>
+ ///
+ /// </remarks>
+ /// <param name="buffer">The buffer into which the read data should be placed.</param>
+ /// <param name="offset">the offset within that data array to put the first byte read.</param>
+ /// <param name="count">the number of bytes to read.</param>
+ /// <returns>the number of bytes actually read</returns>
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ if (_disposed) throw new ObjectDisposedException("DeflateStream");
+ return _baseStream.Read(buffer, offset, count);
+ }
+
+
+ /// <summary>
+ /// Calling this method always throws a <see cref="NotImplementedException"/>.
+ /// </summary>
+ /// <param name="offset">this is irrelevant, since it will always throw!</param>
+ /// <param name="origin">this is irrelevant, since it will always throw!</param>
+ /// <returns>irrelevant!</returns>
+ public override long Seek(long offset, System.IO.SeekOrigin origin)
+ {
+ throw new NotImplementedException();
+ }
+
+ /// <summary>
+ /// Calling this method always throws a <see cref="NotImplementedException"/>.
+ /// </summary>
+ /// <param name="value">this is irrelevant, since it will always throw!</param>
+ public override void SetLength(long value)
+ {
+ throw new NotImplementedException();
+ }
+
+ /// <summary>
+ /// Write data to the stream.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// If you wish to use the <c>DeflateStream</c> to compress data while
+ /// writing, you can create a <c>DeflateStream</c> with
+ /// <c>CompressionMode.Compress</c>, and a writable output stream. Then call
+ /// <c>Write()</c> on that <c>DeflateStream</c>, providing uncompressed data
+ /// as input. The data sent to the output stream will be the compressed form
+ /// of the data written. If you wish to use the <c>DeflateStream</c> to
+ /// decompress data while writing, you can create a <c>DeflateStream</c> with
+ /// <c>CompressionMode.Decompress</c>, and a writable output stream. Then
+ /// call <c>Write()</c> on that stream, providing previously compressed
+ /// data. The data sent to the output stream will be the decompressed form of
+ /// the data written.
+ /// </para>
+ ///
+ /// <para>
+ /// A <c>DeflateStream</c> can be used for <c>Read()</c> or <c>Write()</c>,
+ /// but not both.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="buffer">The buffer holding data to write to the stream.</param>
+ /// <param name="offset">the offset within that data array to find the first byte to write.</param>
+ /// <param name="count">the number of bytes to write.</param>
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ if (_disposed) throw new ObjectDisposedException("DeflateStream");
+ _baseStream.Write(buffer, offset, count);
+ }
+ #endregion
+
+
+
+
+ /// <summary>
+ /// Compress a string into a byte array using DEFLATE (RFC 1951).
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Uncompress it with <see cref="DeflateStream.UncompressString(byte[])"/>.
+ /// </remarks>
+ ///
+ /// <seealso cref="DeflateStream.UncompressString(byte[])">DeflateStream.UncompressString(byte[])</seealso>
+ /// <seealso cref="DeflateStream.CompressBuffer(byte[])">DeflateStream.CompressBuffer(byte[])</seealso>
+ /// <seealso cref="GZipStream.CompressString(string)">GZipStream.CompressString(string)</seealso>
+ /// <seealso cref="ZlibStream.CompressString(string)">ZlibStream.CompressString(string)</seealso>
+ ///
+ /// <param name="s">
+ /// A string to compress. The string will first be encoded
+ /// using UTF8, then compressed.
+ /// </param>
+ ///
+ /// <returns>The string in compressed form</returns>
+ internal static byte[] CompressString(String s)
+ {
+ using (var ms = new System.IO.MemoryStream())
+ {
+ System.IO.Stream compressor =
+ new DeflateStream(ms, CompressionMode.Compress, CompressionLevel.BestCompression);
+ ZlibBaseStream.CompressString(s, compressor);
+ return ms.ToArray();
+ }
+ }
+
+
+ /// <summary>
+ /// Compress a byte array into a new byte array using DEFLATE.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Uncompress it with <see cref="DeflateStream.UncompressBuffer(byte[])"/>.
+ /// </remarks>
+ ///
+ /// <seealso cref="DeflateStream.CompressString(string)">DeflateStream.CompressString(string)</seealso>
+ /// <seealso cref="DeflateStream.UncompressBuffer(byte[])">DeflateStream.UncompressBuffer(byte[])</seealso>
+ /// <seealso cref="GZipStream.CompressBuffer(byte[])">GZipStream.CompressBuffer(byte[])</seealso>
+ /// <seealso cref="ZlibStream.CompressBuffer(byte[])">ZlibStream.CompressBuffer(byte[])</seealso>
+ ///
+ /// <param name="b">
+ /// A buffer to compress.
+ /// </param>
+ ///
+ /// <returns>The data in compressed form</returns>
+ internal static byte[] CompressBuffer(byte[] b)
+ {
+ using (var ms = new System.IO.MemoryStream())
+ {
+ System.IO.Stream compressor =
+ new DeflateStream( ms, CompressionMode.Compress, CompressionLevel.BestCompression );
+
+ ZlibBaseStream.CompressBuffer(b, compressor);
+ return ms.ToArray();
+ }
+ }
+
+
+ /// <summary>
+ /// Uncompress a DEFLATE'd byte array into a single string.
+ /// </summary>
+ ///
+ /// <seealso cref="DeflateStream.CompressString(String)">DeflateStream.CompressString(String)</seealso>
+ /// <seealso cref="DeflateStream.UncompressBuffer(byte[])">DeflateStream.UncompressBuffer(byte[])</seealso>
+ /// <seealso cref="GZipStream.UncompressString(byte[])">GZipStream.UncompressString(byte[])</seealso>
+ /// <seealso cref="ZlibStream.UncompressString(byte[])">ZlibStream.UncompressString(byte[])</seealso>
+ ///
+ /// <param name="compressed">
+ /// A buffer containing DEFLATE-compressed data.
+ /// </param>
+ ///
+ /// <returns>The uncompressed string</returns>
+ internal static String UncompressString(byte[] compressed)
+ {
+ using (var input = new System.IO.MemoryStream(compressed))
+ {
+ System.IO.Stream decompressor =
+ new DeflateStream(input, CompressionMode.Decompress);
+
+ return ZlibBaseStream.UncompressString(compressed, decompressor);
+ }
+ }
+
+
+ /// <summary>
+ /// Uncompress a DEFLATE'd byte array into a byte array.
+ /// </summary>
+ ///
+ /// <seealso cref="DeflateStream.CompressBuffer(byte[])">DeflateStream.CompressBuffer(byte[])</seealso>
+ /// <seealso cref="DeflateStream.UncompressString(byte[])">DeflateStream.UncompressString(byte[])</seealso>
+ /// <seealso cref="GZipStream.UncompressBuffer(byte[])">GZipStream.UncompressBuffer(byte[])</seealso>
+ /// <seealso cref="ZlibStream.UncompressBuffer(byte[])">ZlibStream.UncompressBuffer(byte[])</seealso>
+ ///
+ /// <param name="compressed">
+ /// A buffer containing data that has been compressed with DEFLATE.
+ /// </param>
+ ///
+ /// <returns>The data in uncompressed form</returns>
+ internal static byte[] UncompressBuffer(byte[] compressed)
+ {
+ using (var input = new System.IO.MemoryStream(compressed))
+ {
+ System.IO.Stream decompressor =
+ new DeflateStream( input, CompressionMode.Decompress );
+
+ return ZlibBaseStream.UncompressBuffer(compressed, decompressor);
+ }
+ }
+
+ }
+
+}
+
--- /dev/null
+// GZipStream.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-August-08 18:14:39>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the GZipStream class, which can be used as a replacement for
+// the System.IO.Compression.GZipStream class in the .NET BCL. NB: The design is not
+// completely OO clean: there is some intelligence in the ZlibBaseStream that reads the
+// GZip header.
+//
+// ------------------------------------------------------------------
+
+
+using System;
+using System.IO;
+
+namespace Ionic.Zlib
+{
+ /// <summary>
+ /// A class for compressing and decompressing GZIP streams.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// The <c>GZipStream</c> is a <see
+ /// href="http://en.wikipedia.org/wiki/Decorator_pattern">Decorator</see> on a
+ /// <see cref="Stream"/>. It adds GZIP compression or decompression to any
+ /// stream.
+ /// </para>
+ ///
+ /// <para>
+ /// Like the <c>System.IO.Compression.GZipStream</c> in the .NET Base Class Library, the
+ /// <c>Ionic.Zlib.GZipStream</c> can compress while writing, or decompress while
+ /// reading, but not vice versa. The compression method used is GZIP, which is
+ /// documented in <see href="http://www.ietf.org/rfc/rfc1952.txt">IETF RFC
+ /// 1952</see>, "GZIP file format specification version 4.3".</para>
+ ///
+ /// <para>
+ /// A <c>GZipStream</c> can be used to decompress data (through <c>Read()</c>) or
+ /// to compress data (through <c>Write()</c>), but not both.
+ /// </para>
+ ///
+ /// <para>
+ /// If you wish to use the <c>GZipStream</c> to compress data, you must wrap it
+ /// around a write-able stream. As you call <c>Write()</c> on the <c>GZipStream</c>, the
+ /// data will be compressed into the GZIP format. If you want to decompress data,
+ /// you must wrap the <c>GZipStream</c> around a readable stream that contains an
+ /// IETF RFC 1952-compliant stream. The data will be decompressed as you call
+ /// <c>Read()</c> on the <c>GZipStream</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// Though the GZIP format allows data from multiple files to be concatenated
+ /// together, this stream handles only a single segment of GZIP format, typically
+ /// representing a single file.
+ /// </para>
+ ///
+ /// <para>
+ /// This class is similar to <see cref="ZlibStream"/> and <see cref="DeflateStream"/>.
+ /// <c>ZlibStream</c> handles RFC1950-compliant streams. <see cref="DeflateStream"/>
+ /// handles RFC1951-compliant streams. This class handles RFC1952-compliant streams.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <seealso cref="DeflateStream" />
+ /// <seealso cref="ZlibStream" />
+ internal class GZipStream : System.IO.Stream
+ {
+ // GZip format
+ // source: http://tools.ietf.org/html/rfc1952
+ //
+ // header id: 2 bytes 1F 8B
+ // compress method 1 byte 8= DEFLATE (none other supported)
+ // flag 1 byte bitfield (See below)
+ // mtime 4 bytes time_t (seconds since jan 1, 1970 UTC of the file.
+ // xflg 1 byte 2 = max compress used , 4 = max speed (can be ignored)
+ // OS 1 byte OS for originating archive. set to 0xFF in compression.
+ // extra field length 2 bytes optional - only if FEXTRA is set.
+ // extra field varies
+ // filename varies optional - if FNAME is set. zero terminated. ISO-8859-1.
+ // file comment varies optional - if FCOMMENT is set. zero terminated. ISO-8859-1.
+ // crc16 1 byte optional - present only if FHCRC bit is set
+ // compressed data varies
+ // CRC32 4 bytes
+ // isize 4 bytes data size modulo 2^32
+ //
+ // FLG (FLaGs)
+ // bit 0 FTEXT - indicates file is ASCII text (can be safely ignored)
+ // bit 1 FHCRC - there is a CRC16 for the header immediately following the header
+ // bit 2 FEXTRA - extra fields are present
+ // bit 3 FNAME - the zero-terminated filename is present. encoding; ISO-8859-1.
+ // bit 4 FCOMMENT - a zero-terminated file comment is present. encoding: ISO-8859-1
+ // bit 5 reserved
+ // bit 6 reserved
+ // bit 7 reserved
+ //
+ // On consumption:
+ // Extra field is a bunch of nonsense and can be safely ignored.
+ // Header CRC and OS, likewise.
+ //
+ // on generation:
+ // all optional fields get 0, except for the OS, which gets 255.
+ //
+
+
+
+ /// <summary>
+ /// The comment on the GZIP stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The GZIP format allows for each file to optionally have an associated
+ /// comment stored with the file. The comment is encoded with the ISO-8859-1
+ /// code page. To include a comment in a GZIP stream you create, set this
+ /// property before calling <c>Write()</c> for the first time on the
+ /// <c>GZipStream</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// When using <c>GZipStream</c> to decompress, you can retrieve this property
+ /// after the first call to <c>Read()</c>. If no comment has been set in the
+ /// GZIP bytestream, the Comment property will return <c>null</c>
+ /// (<c>Nothing</c> in VB).
+ /// </para>
+ /// </remarks>
+ public String Comment
+ {
+ get
+ {
+ return _Comment;
+ }
+ set
+ {
+ if (_disposed) throw new ObjectDisposedException("GZipStream");
+ _Comment = value;
+ }
+ }
+
+ /// <summary>
+ /// The FileName for the GZIP stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// The GZIP format optionally allows each file to have an associated
+ /// filename. When compressing data (through <c>Write()</c>), set this
+ /// FileName before calling <c>Write()</c> the first time on the <c>GZipStream</c>.
+ /// The actual filename is encoded into the GZIP bytestream with the
+ /// ISO-8859-1 code page, according to RFC 1952. It is the application's
+ /// responsibility to insure that the FileName can be encoded and decoded
+ /// correctly with this code page.
+ /// </para>
+ ///
+ /// <para>
+ /// When decompressing (through <c>Read()</c>), you can retrieve this value
+ /// any time after the first <c>Read()</c>. In the case where there was no filename
+ /// encoded into the GZIP bytestream, the property will return <c>null</c> (<c>Nothing</c>
+ /// in VB).
+ /// </para>
+ /// </remarks>
+ public String FileName
+ {
+ get { return _FileName; }
+ set
+ {
+ if (_disposed) throw new ObjectDisposedException("GZipStream");
+ _FileName = value;
+ if (_FileName == null) return;
+ if (_FileName.IndexOf("/") != -1)
+ {
+ _FileName = _FileName.Replace("/", "\\");
+ }
+ if (_FileName.EndsWith("\\"))
+ throw new Exception("Illegal filename");
+ if (_FileName.IndexOf("\\") != -1)
+ {
+ // trim any leading path
+ _FileName = Path.GetFileName(_FileName);
+ }
+ }
+ }
+
+ /// <summary>
+ /// The last modified time for the GZIP stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// GZIP allows the storage of a last modified time with each GZIP entry.
+ /// When compressing data, you can set this before the first call to
+ /// <c>Write()</c>. When decompressing, you can retrieve this value any time
+ /// after the first call to <c>Read()</c>.
+ /// </remarks>
+ public DateTime? LastModified;
+
+ /// <summary>
+ /// The CRC on the GZIP stream.
+ /// </summary>
+ /// <remarks>
+ /// This is used for internal error checking. You probably don't need to look at this property.
+ /// </remarks>
+ public int Crc32 { get { return _Crc32; } }
+
+ private int _headerByteCount;
+ internal ZlibBaseStream _baseStream;
+ bool _disposed;
+ bool _firstReadDone;
+ string _FileName;
+ string _Comment;
+ int _Crc32;
+
+
+ /// <summary>
+ /// Create a <c>GZipStream</c> using the specified <c>CompressionMode</c>.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// When mode is <c>CompressionMode.Compress</c>, the <c>GZipStream</c> will use the
+ /// default compression level.
+ /// </para>
+ ///
+ /// <para>
+ /// As noted in the class documentation, the <c>CompressionMode</c> (Compress
+ /// or Decompress) also establishes the "direction" of the stream. A
+ /// <c>GZipStream</c> with <c>CompressionMode.Compress</c> works only through
+ /// <c>Write()</c>. A <c>GZipStream</c> with
+ /// <c>CompressionMode.Decompress</c> works only through <c>Read()</c>.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example shows how to use a GZipStream to compress data.
+ /// <code>
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
+ /// {
+ /// using (var raw = System.IO.File.Create(outputFile))
+ /// {
+ /// using (Stream compressor = new GZipStream(raw, CompressionMode.Compress))
+ /// {
+ /// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
+ /// int n;
+ /// while ((n= input.Read(buffer, 0, buffer.Length)) != 0)
+ /// {
+ /// compressor.Write(buffer, 0, n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Dim outputFile As String = (fileToCompress & ".compressed")
+ /// Using input As Stream = File.OpenRead(fileToCompress)
+ /// Using raw As FileStream = File.Create(outputFile)
+ /// Using compressor As Stream = New GZipStream(raw, CompressionMode.Compress)
+ /// Dim buffer As Byte() = New Byte(4096) {}
+ /// Dim n As Integer = -1
+ /// Do While (n <> 0)
+ /// If (n > 0) Then
+ /// compressor.Write(buffer, 0, n)
+ /// End If
+ /// n = input.Read(buffer, 0, buffer.Length)
+ /// Loop
+ /// End Using
+ /// End Using
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <example>
+ /// This example shows how to use a GZipStream to uncompress a file.
+ /// <code>
+ /// private void GunZipFile(string filename)
+ /// {
+ /// if (!filename.EndsWith(".gz))
+ /// throw new ArgumentException("filename");
+ /// var DecompressedFile = filename.Substring(0,filename.Length-3);
+ /// byte[] working = new byte[WORKING_BUFFER_SIZE];
+ /// int n= 1;
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(filename))
+ /// {
+ /// using (Stream decompressor= new Ionic.Zlib.GZipStream(input, CompressionMode.Decompress, true))
+ /// {
+ /// using (var output = System.IO.File.Create(DecompressedFile))
+ /// {
+ /// while (n !=0)
+ /// {
+ /// n= decompressor.Read(working, 0, working.Length);
+ /// if (n > 0)
+ /// {
+ /// output.Write(working, 0, n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Private Sub GunZipFile(ByVal filename as String)
+ /// If Not (filename.EndsWith(".gz)) Then
+ /// Throw New ArgumentException("filename")
+ /// End If
+ /// Dim DecompressedFile as String = filename.Substring(0,filename.Length-3)
+ /// Dim working(WORKING_BUFFER_SIZE) as Byte
+ /// Dim n As Integer = 1
+ /// Using input As Stream = File.OpenRead(filename)
+ /// Using decompressor As Stream = new Ionic.Zlib.GZipStream(input, CompressionMode.Decompress, True)
+ /// Using output As Stream = File.Create(UncompressedFile)
+ /// Do
+ /// n= decompressor.Read(working, 0, working.Length)
+ /// If n > 0 Then
+ /// output.Write(working, 0, n)
+ /// End IF
+ /// Loop While (n > 0)
+ /// End Using
+ /// End Using
+ /// End Using
+ /// End Sub
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="stream">The stream which will be read or written.</param>
+ /// <param name="mode">Indicates whether the GZipStream will compress or decompress.</param>
+ public GZipStream(Stream stream, CompressionMode mode)
+ : this(stream, mode, CompressionLevel.Default, false)
+ {
+ }
+
+ /// <summary>
+ /// Create a <c>GZipStream</c> using the specified <c>CompressionMode</c> and
+ /// the specified <c>CompressionLevel</c>.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// The <c>CompressionMode</c> (Compress or Decompress) also establishes the
+ /// "direction" of the stream. A <c>GZipStream</c> with
+ /// <c>CompressionMode.Compress</c> works only through <c>Write()</c>. A
+ /// <c>GZipStream</c> with <c>CompressionMode.Decompress</c> works only
+ /// through <c>Read()</c>.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to use a <c>GZipStream</c> to compress a file into a .gz file.
+ ///
+ /// <code>
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
+ /// {
+ /// using (var raw = System.IO.File.Create(fileToCompress + ".gz"))
+ /// {
+ /// using (Stream compressor = new GZipStream(raw,
+ /// CompressionMode.Compress,
+ /// CompressionLevel.BestCompression))
+ /// {
+ /// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
+ /// int n;
+ /// while ((n= input.Read(buffer, 0, buffer.Length)) != 0)
+ /// {
+ /// compressor.Write(buffer, 0, n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using input As Stream = File.OpenRead(fileToCompress)
+ /// Using raw As FileStream = File.Create(fileToCompress & ".gz")
+ /// Using compressor As Stream = New GZipStream(raw, CompressionMode.Compress, CompressionLevel.BestCompression)
+ /// Dim buffer As Byte() = New Byte(4096) {}
+ /// Dim n As Integer = -1
+ /// Do While (n <> 0)
+ /// If (n > 0) Then
+ /// compressor.Write(buffer, 0, n)
+ /// End If
+ /// n = input.Read(buffer, 0, buffer.Length)
+ /// Loop
+ /// End Using
+ /// End Using
+ /// End Using
+ /// </code>
+ /// </example>
+ /// <param name="stream">The stream to be read or written while deflating or inflating.</param>
+ /// <param name="mode">Indicates whether the <c>GZipStream</c> will compress or decompress.</param>
+ /// <param name="level">A tuning knob to trade speed for effectiveness.</param>
+ public GZipStream(Stream stream, CompressionMode mode, CompressionLevel level)
+ : this(stream, mode, level, false)
+ {
+ }
+
+ /// <summary>
+ /// Create a <c>GZipStream</c> using the specified <c>CompressionMode</c>, and
+ /// explicitly specify whether the stream should be left open after Deflation
+ /// or Inflation.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This constructor allows the application to request that the captive stream
+ /// remain open after the deflation or inflation occurs. By default, after
+ /// <c>Close()</c> is called on the stream, the captive stream is also
+ /// closed. In some cases this is not desired, for example if the stream is a
+ /// memory stream that will be re-read after compressed data has been written
+ /// to it. Specify true for the <paramref name="leaveOpen"/> parameter to leave
+ /// the stream open.
+ /// </para>
+ ///
+ /// <para>
+ /// The <see cref="CompressionMode"/> (Compress or Decompress) also
+ /// establishes the "direction" of the stream. A <c>GZipStream</c> with
+ /// <c>CompressionMode.Compress</c> works only through <c>Write()</c>. A <c>GZipStream</c>
+ /// with <c>CompressionMode.Decompress</c> works only through <c>Read()</c>.
+ /// </para>
+ ///
+ /// <para>
+ /// The <c>GZipStream</c> will use the default compression level. If you want
+ /// to specify the compression level, see <see cref="GZipStream(Stream,
+ /// CompressionMode, CompressionLevel, bool)"/>.
+ /// </para>
+ ///
+ /// <para>
+ /// See the other overloads of this constructor for example code.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="stream">
+ /// The stream which will be read or written. This is called the "captive"
+ /// stream in other places in this documentation.
+ /// </param>
+ ///
+ /// <param name="mode">Indicates whether the GZipStream will compress or decompress.
+ /// </param>
+ ///
+ /// <param name="leaveOpen">
+ /// true if the application would like the base stream to remain open after
+ /// inflation/deflation.
+ /// </param>
+ public GZipStream(Stream stream, CompressionMode mode, bool leaveOpen)
+ : this(stream, mode, CompressionLevel.Default, leaveOpen)
+ {
+ }
+
+ /// <summary>
+ /// Create a <c>GZipStream</c> using the specified <c>CompressionMode</c> and the
+ /// specified <c>CompressionLevel</c>, and explicitly specify whether the
+ /// stream should be left open after Deflation or Inflation.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This constructor allows the application to request that the captive stream
+ /// remain open after the deflation or inflation occurs. By default, after
+ /// <c>Close()</c> is called on the stream, the captive stream is also
+ /// closed. In some cases this is not desired, for example if the stream is a
+ /// memory stream that will be re-read after compressed data has been written
+ /// to it. Specify true for the <paramref name="leaveOpen"/> parameter to
+ /// leave the stream open.
+ /// </para>
+ ///
+ /// <para>
+ /// As noted in the class documentation, the <c>CompressionMode</c> (Compress
+ /// or Decompress) also establishes the "direction" of the stream. A
+ /// <c>GZipStream</c> with <c>CompressionMode.Compress</c> works only through
+ /// <c>Write()</c>. A <c>GZipStream</c> with <c>CompressionMode.Decompress</c> works only
+ /// through <c>Read()</c>.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example shows how to use a <c>GZipStream</c> to compress data.
+ /// <code>
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
+ /// {
+ /// using (var raw = System.IO.File.Create(outputFile))
+ /// {
+ /// using (Stream compressor = new GZipStream(raw, CompressionMode.Compress, CompressionLevel.BestCompression, true))
+ /// {
+ /// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
+ /// int n;
+ /// while ((n= input.Read(buffer, 0, buffer.Length)) != 0)
+ /// {
+ /// compressor.Write(buffer, 0, n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Dim outputFile As String = (fileToCompress & ".compressed")
+ /// Using input As Stream = File.OpenRead(fileToCompress)
+ /// Using raw As FileStream = File.Create(outputFile)
+ /// Using compressor As Stream = New GZipStream(raw, CompressionMode.Compress, CompressionLevel.BestCompression, True)
+ /// Dim buffer As Byte() = New Byte(4096) {}
+ /// Dim n As Integer = -1
+ /// Do While (n <> 0)
+ /// If (n > 0) Then
+ /// compressor.Write(buffer, 0, n)
+ /// End If
+ /// n = input.Read(buffer, 0, buffer.Length)
+ /// Loop
+ /// End Using
+ /// End Using
+ /// End Using
+ /// </code>
+ /// </example>
+ /// <param name="stream">The stream which will be read or written.</param>
+ /// <param name="mode">Indicates whether the GZipStream will compress or decompress.</param>
+ /// <param name="leaveOpen">true if the application would like the stream to remain open after inflation/deflation.</param>
+ /// <param name="level">A tuning knob to trade speed for effectiveness.</param>
+ public GZipStream(Stream stream, CompressionMode mode, CompressionLevel level, bool leaveOpen)
+ {
+ _baseStream = new ZlibBaseStream(stream, mode, level, ZlibStreamFlavor.GZIP, leaveOpen);
+ }
+
+ #region Zlib properties
+
+ /// <summary>
+ /// This property sets the flush behavior on the stream.
+ /// </summary>
+ virtual public FlushType FlushMode
+ {
+ get { return (this._baseStream._flushMode); }
+ set {
+ if (_disposed) throw new ObjectDisposedException("GZipStream");
+ this._baseStream._flushMode = value;
+ }
+ }
+
+ /// <summary>
+ /// The size of the working buffer for the compression codec.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The working buffer is used for all stream operations. The default size is
+ /// 1024 bytes. The minimum size is 128 bytes. You may get better performance
+ /// with a larger buffer. Then again, you might not. You would have to test
+ /// it.
+ /// </para>
+ ///
+ /// <para>
+ /// Set this before the first call to <c>Read()</c> or <c>Write()</c> on the
+ /// stream. If you try to set it afterwards, it will throw.
+ /// </para>
+ /// </remarks>
+ public int BufferSize
+ {
+ get
+ {
+ return this._baseStream._bufferSize;
+ }
+ set
+ {
+ if (_disposed) throw new ObjectDisposedException("GZipStream");
+ if (this._baseStream._workingBuffer != null)
+ throw new ZlibException("The working buffer is already set.");
+ if (value < ZlibConstants.WorkingBufferSizeMin)
+ throw new ZlibException(String.Format("Don't be silly. {0} bytes?? Use a bigger buffer, at least {1}.", value, ZlibConstants.WorkingBufferSizeMin));
+ this._baseStream._bufferSize = value;
+ }
+ }
+
+
+ /// <summary> Returns the total number of bytes input so far.</summary>
+ virtual public long TotalIn
+ {
+ get
+ {
+ return this._baseStream._z.TotalBytesIn;
+ }
+ }
+
+ /// <summary> Returns the total number of bytes output so far.</summary>
+ virtual public long TotalOut
+ {
+ get
+ {
+ return this._baseStream._z.TotalBytesOut;
+ }
+ }
+
+ #endregion
+
+ #region Stream methods
+
+ /// <summary>
+ /// Dispose the stream.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// This may or may not result in a <c>Close()</c> call on the captive
+ /// stream. See the constructors that have a <c>leaveOpen</c> parameter
+ /// for more information.
+ /// </para>
+ /// <para>
+ /// This method may be invoked in two distinct scenarios. If disposing
+ /// == true, the method has been called directly or indirectly by a
+ /// user's code, for example via the public Dispose() method. In this
+ /// case, both managed and unmanaged resources can be referenced and
+ /// disposed. If disposing == false, the method has been called by the
+ /// runtime from inside the object finalizer and this method should not
+ /// reference other objects; in that case only unmanaged resources must
+ /// be referenced or disposed.
+ /// </para>
+ /// </remarks>
+ /// <param name="disposing">
+ /// indicates whether the Dispose method was invoked by user code.
+ /// </param>
+ protected override void Dispose(bool disposing)
+ {
+ try
+ {
+ if (!_disposed)
+ {
+ if (disposing && (this._baseStream != null))
+ {
+ this._baseStream.Close();
+ this._Crc32 = _baseStream.Crc32;
+ }
+ _disposed = true;
+ }
+ }
+ finally
+ {
+ base.Dispose(disposing);
+ }
+ }
+
+
+ /// <summary>
+ /// Indicates whether the stream can be read.
+ /// </summary>
+ /// <remarks>
+ /// The return value depends on whether the captive stream supports reading.
+ /// </remarks>
+ public override bool CanRead
+ {
+ get
+ {
+ if (_disposed) throw new ObjectDisposedException("GZipStream");
+ return _baseStream._stream.CanRead;
+ }
+ }
+
+ /// <summary>
+ /// Indicates whether the stream supports Seek operations.
+ /// </summary>
+ /// <remarks>
+ /// Always returns false.
+ /// </remarks>
+ public override bool CanSeek
+ {
+ get { return false; }
+ }
+
+
+ /// <summary>
+ /// Indicates whether the stream can be written.
+ /// </summary>
+ /// <remarks>
+ /// The return value depends on whether the captive stream supports writing.
+ /// </remarks>
+ public override bool CanWrite
+ {
+ get
+ {
+ if (_disposed) throw new ObjectDisposedException("GZipStream");
+ return _baseStream._stream.CanWrite;
+ }
+ }
+
+ /// <summary>
+ /// Flush the stream.
+ /// </summary>
+ public override void Flush()
+ {
+ if (_disposed) throw new ObjectDisposedException("GZipStream");
+ _baseStream.Flush();
+ }
+
+ /// <summary>
+ /// Reading this property always throws a <see cref="NotImplementedException"/>.
+ /// </summary>
+ public override long Length
+ {
+ get { throw new NotImplementedException(); }
+ }
+
+ /// <summary>
+ /// The position of the stream pointer.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Setting this property always throws a <see
+ /// cref="NotImplementedException"/>. Reading will return the total bytes
+ /// written out, if used in writing, or the total bytes read in, if used in
+ /// reading. The count may refer to compressed bytes or uncompressed bytes,
+ /// depending on how you've used the stream.
+ /// </remarks>
+ public override long Position
+ {
+ get
+ {
+ if (this._baseStream._streamMode == Ionic.Zlib.ZlibBaseStream.StreamMode.Writer)
+ return this._baseStream._z.TotalBytesOut + _headerByteCount;
+ if (this._baseStream._streamMode == Ionic.Zlib.ZlibBaseStream.StreamMode.Reader)
+ return this._baseStream._z.TotalBytesIn + this._baseStream._gzipHeaderByteCount;
+ return 0;
+ }
+
+ set { throw new NotImplementedException(); }
+ }
+
+ /// <summary>
+ /// Read and decompress data from the source stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// With a <c>GZipStream</c>, decompression is done through reading.
+ /// </remarks>
+ ///
+ /// <example>
+ /// <code>
+ /// byte[] working = new byte[WORKING_BUFFER_SIZE];
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(_CompressedFile))
+ /// {
+ /// using (Stream decompressor= new Ionic.Zlib.GZipStream(input, CompressionMode.Decompress, true))
+ /// {
+ /// using (var output = System.IO.File.Create(_DecompressedFile))
+ /// {
+ /// int n;
+ /// while ((n= decompressor.Read(working, 0, working.Length)) !=0)
+ /// {
+ /// output.Write(working, 0, n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ /// </example>
+ /// <param name="buffer">The buffer into which the decompressed data should be placed.</param>
+ /// <param name="offset">the offset within that data array to put the first byte read.</param>
+ /// <param name="count">the number of bytes to read.</param>
+ /// <returns>the number of bytes actually read</returns>
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ if (_disposed) throw new ObjectDisposedException("GZipStream");
+ int n = _baseStream.Read(buffer, offset, count);
+
+ // Console.WriteLine("GZipStream::Read(buffer, off({0}), c({1}) = {2}", offset, count, n);
+ // Console.WriteLine( Util.FormatByteArray(buffer, offset, n) );
+
+ if (!_firstReadDone)
+ {
+ _firstReadDone = true;
+ FileName = _baseStream._GzipFileName;
+ Comment = _baseStream._GzipComment;
+ }
+ return n;
+ }
+
+
+
+ /// <summary>
+ /// Calling this method always throws a <see cref="NotImplementedException"/>.
+ /// </summary>
+ /// <param name="offset">irrelevant; it will always throw!</param>
+ /// <param name="origin">irrelevant; it will always throw!</param>
+ /// <returns>irrelevant!</returns>
+ public override long Seek(long offset, SeekOrigin origin)
+ {
+ throw new NotImplementedException();
+ }
+
+ /// <summary>
+ /// Calling this method always throws a <see cref="NotImplementedException"/>.
+ /// </summary>
+ /// <param name="value">irrelevant; this method will always throw!</param>
+ public override void SetLength(long value)
+ {
+ throw new NotImplementedException();
+ }
+
+ /// <summary>
+ /// Write data to the stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// If you wish to use the <c>GZipStream</c> to compress data while writing,
+ /// you can create a <c>GZipStream</c> with <c>CompressionMode.Compress</c>, and a
+ /// writable output stream. Then call <c>Write()</c> on that <c>GZipStream</c>,
+ /// providing uncompressed data as input. The data sent to the output stream
+ /// will be the compressed form of the data written.
+ /// </para>
+ ///
+ /// <para>
+ /// A <c>GZipStream</c> can be used for <c>Read()</c> or <c>Write()</c>, but not
+ /// both. Writing implies compression. Reading implies decompression.
+ /// </para>
+ ///
+ /// </remarks>
+ /// <param name="buffer">The buffer holding data to write to the stream.</param>
+ /// <param name="offset">the offset within that data array to find the first byte to write.</param>
+ /// <param name="count">the number of bytes to write.</param>
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ if (_disposed) throw new ObjectDisposedException("GZipStream");
+ if (_baseStream._streamMode == Ionic.Zlib.ZlibBaseStream.StreamMode.Undefined)
+ {
+ //Console.WriteLine("GZipStream: First write");
+ if (_baseStream._wantCompress)
+ {
+ // first write in compression, therefore, emit the GZIP header
+ _headerByteCount = EmitHeader();
+ }
+ else
+ {
+ throw new InvalidOperationException();
+ }
+ }
+
+ _baseStream.Write(buffer, offset, count);
+ }
+ #endregion
+
+
+ internal static readonly System.DateTime _unixEpoch = new System.DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+#if SILVERLIGHT || NETCF
+ internal static readonly System.Text.Encoding iso8859dash1 = new Ionic.Encoding.Iso8859Dash1Encoding();
+#else
+ internal static readonly System.Text.Encoding iso8859dash1 = System.Text.Encoding.GetEncoding("iso-8859-1");
+#endif
+
+
+ private int EmitHeader()
+ {
+ byte[] commentBytes = (Comment == null) ? null : iso8859dash1.GetBytes(Comment);
+ byte[] filenameBytes = (FileName == null) ? null : iso8859dash1.GetBytes(FileName);
+
+ int cbLength = (Comment == null) ? 0 : commentBytes.Length + 1;
+ int fnLength = (FileName == null) ? 0 : filenameBytes.Length + 1;
+
+ int bufferLength = 10 + cbLength + fnLength;
+ byte[] header = new byte[bufferLength];
+ int i = 0;
+ // ID
+ header[i++] = 0x1F;
+ header[i++] = 0x8B;
+
+ // compression method
+ header[i++] = 8;
+ byte flag = 0;
+ if (Comment != null)
+ flag ^= 0x10;
+ if (FileName != null)
+ flag ^= 0x8;
+
+ // flag
+ header[i++] = flag;
+
+ // mtime
+ if (!LastModified.HasValue) LastModified = DateTime.Now;
+ System.TimeSpan delta = LastModified.Value - _unixEpoch;
+ Int32 timet = (Int32)delta.TotalSeconds;
+ Array.Copy(BitConverter.GetBytes(timet), 0, header, i, 4);
+ i += 4;
+
+ // xflg
+ header[i++] = 0; // this field is totally useless
+ // OS
+ header[i++] = 0xFF; // 0xFF == unspecified
+
+ // extra field length - only if FEXTRA is set, which it is not.
+ //header[i++]= 0;
+ //header[i++]= 0;
+
+ // filename
+ if (fnLength != 0)
+ {
+ Array.Copy(filenameBytes, 0, header, i, fnLength - 1);
+ i += fnLength - 1;
+ header[i++] = 0; // terminate
+ }
+
+ // comment
+ if (cbLength != 0)
+ {
+ Array.Copy(commentBytes, 0, header, i, cbLength - 1);
+ i += cbLength - 1;
+ header[i++] = 0; // terminate
+ }
+
+ _baseStream._stream.Write(header, 0, header.Length);
+
+ return header.Length; // bytes written
+ }
+
+
+
+ /// <summary>
+ /// Compress a string into a byte array using GZip.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Uncompress it with <see cref="GZipStream.UncompressString(byte[])"/>.
+ /// </remarks>
+ ///
+ /// <seealso cref="GZipStream.UncompressString(byte[])"/>
+ /// <seealso cref="GZipStream.CompressBuffer(byte[])"/>
+ ///
+ /// <param name="s">
+ /// A string to compress. The string will first be encoded
+ /// using UTF8, then compressed.
+ /// </param>
+ ///
+ /// <returns>The string in compressed form</returns>
+ internal static byte[] CompressString(String s)
+ {
+ using (var ms = new MemoryStream())
+ {
+ System.IO.Stream compressor =
+ new GZipStream(ms, CompressionMode.Compress, CompressionLevel.BestCompression);
+ ZlibBaseStream.CompressString(s, compressor);
+ return ms.ToArray();
+ }
+ }
+
+
+ /// <summary>
+ /// Compress a byte array into a new byte array using GZip.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Uncompress it with <see cref="GZipStream.UncompressBuffer(byte[])"/>.
+ /// </remarks>
+ ///
+ /// <seealso cref="GZipStream.CompressString(string)"/>
+ /// <seealso cref="GZipStream.UncompressBuffer(byte[])"/>
+ ///
+ /// <param name="b">
+ /// A buffer to compress.
+ /// </param>
+ ///
+ /// <returns>The data in compressed form</returns>
+ internal static byte[] CompressBuffer(byte[] b)
+ {
+ using (var ms = new MemoryStream())
+ {
+ System.IO.Stream compressor =
+ new GZipStream( ms, CompressionMode.Compress, CompressionLevel.BestCompression );
+
+ ZlibBaseStream.CompressBuffer(b, compressor);
+ return ms.ToArray();
+ }
+ }
+
+
+ /// <summary>
+ /// Uncompress a GZip'ed byte array into a single string.
+ /// </summary>
+ ///
+ /// <seealso cref="GZipStream.CompressString(String)"/>
+ /// <seealso cref="GZipStream.UncompressBuffer(byte[])"/>
+ ///
+ /// <param name="compressed">
+ /// A buffer containing GZIP-compressed data.
+ /// </param>
+ ///
+ /// <returns>The uncompressed string</returns>
+ internal static String UncompressString(byte[] compressed)
+ {
+ using (var input = new MemoryStream(compressed))
+ {
+ Stream decompressor = new GZipStream(input, CompressionMode.Decompress);
+ return ZlibBaseStream.UncompressString(compressed, decompressor);
+ }
+ }
+
+
+ /// <summary>
+ /// Uncompress a GZip'ed byte array into a byte array.
+ /// </summary>
+ ///
+ /// <seealso cref="GZipStream.CompressBuffer(byte[])"/>
+ /// <seealso cref="GZipStream.UncompressString(byte[])"/>
+ ///
+ /// <param name="compressed">
+ /// A buffer containing data that has been compressed with GZip.
+ /// </param>
+ ///
+ /// <returns>The data in uncompressed form</returns>
+ internal static byte[] UncompressBuffer(byte[] compressed)
+ {
+ using (var input = new System.IO.MemoryStream(compressed))
+ {
+ System.IO.Stream decompressor =
+ new GZipStream( input, CompressionMode.Decompress );
+
+ return ZlibBaseStream.UncompressBuffer(compressed, decompressor);
+ }
+ }
+
+
+ }
+}
--- /dev/null
+// Inftree.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2009-October-28 12:43:54>
+//
+// ------------------------------------------------------------------
+//
+// This module defines classes used in decompression. This code is derived
+// from the jzlib implementation of zlib. In keeping with the license for jzlib,
+// the copyright to that code is below.
+//
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in
+// the documentation and/or other materials provided with the distribution.
+//
+// 3. The names of the authors may not be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
+// INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
+// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// -----------------------------------------------------------------------
+//
+// This program is based on zlib-1.1.3; credit to authors
+// Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
+// and contributors of zlib.
+//
+// -----------------------------------------------------------------------
+
+
+
+using System;
+namespace Ionic.Zlib
+{
+
+ sealed class InfTree
+ {
+
+ private const int MANY = 1440;
+
+ private const int Z_OK = 0;
+ private const int Z_STREAM_END = 1;
+ private const int Z_NEED_DICT = 2;
+ private const int Z_ERRNO = - 1;
+ private const int Z_STREAM_ERROR = - 2;
+ private const int Z_DATA_ERROR = - 3;
+ private const int Z_MEM_ERROR = - 4;
+ private const int Z_BUF_ERROR = - 5;
+ private const int Z_VERSION_ERROR = - 6;
+
+ internal const int fixed_bl = 9;
+ internal const int fixed_bd = 5;
+
+ //UPGRADE_NOTE: Final was removed from the declaration of 'fixed_tl'. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
+ internal static readonly int[] fixed_tl = new int[]{96, 7, 256, 0, 8, 80, 0, 8, 16, 84, 8, 115, 82, 7, 31, 0, 8, 112, 0, 8, 48, 0, 9, 192, 80, 7, 10, 0, 8, 96, 0, 8, 32, 0, 9, 160, 0, 8, 0, 0, 8, 128, 0, 8, 64, 0, 9, 224, 80, 7, 6, 0, 8, 88, 0, 8, 24, 0, 9, 144, 83, 7, 59, 0, 8, 120, 0, 8, 56, 0, 9, 208, 81, 7, 17, 0, 8, 104, 0, 8, 40, 0, 9, 176, 0, 8, 8, 0, 8, 136, 0, 8, 72, 0, 9, 240, 80, 7, 4, 0, 8, 84, 0, 8, 20, 85, 8, 227, 83, 7, 43, 0, 8, 116, 0, 8, 52, 0, 9, 200, 81, 7, 13, 0, 8, 100, 0, 8, 36, 0, 9, 168, 0, 8, 4, 0, 8, 132, 0, 8, 68, 0, 9, 232, 80, 7, 8, 0, 8, 92, 0, 8, 28, 0, 9, 152, 84, 7, 83, 0, 8, 124, 0, 8, 60, 0, 9, 216, 82, 7, 23, 0, 8, 108, 0, 8, 44, 0, 9, 184, 0, 8, 12, 0, 8, 140, 0, 8, 76, 0, 9, 248, 80, 7, 3, 0, 8, 82, 0, 8, 18, 85, 8, 163, 83, 7, 35, 0, 8, 114, 0, 8, 50, 0, 9, 196, 81, 7, 11, 0, 8, 98, 0, 8, 34, 0, 9, 164, 0, 8, 2, 0, 8, 130, 0, 8, 66, 0, 9, 228, 80, 7, 7, 0, 8, 90, 0, 8, 26, 0, 9, 148, 84, 7, 67, 0, 8, 122, 0, 8, 58, 0, 9, 212, 82, 7, 19, 0, 8, 106, 0, 8, 42, 0, 9, 180, 0, 8, 10, 0, 8, 138, 0, 8, 74, 0, 9, 244, 80, 7, 5, 0, 8, 86, 0, 8, 22, 192, 8, 0, 83, 7, 51, 0, 8, 118, 0, 8, 54, 0, 9, 204, 81, 7, 15, 0, 8, 102, 0, 8, 38, 0, 9, 172, 0, 8, 6, 0, 8, 134, 0, 8, 70, 0, 9, 236, 80, 7, 9, 0, 8, 94, 0, 8, 30, 0, 9, 156, 84, 7, 99, 0, 8, 126, 0, 8, 62, 0, 9, 220, 82, 7, 27, 0, 8, 110, 0, 8, 46, 0, 9, 188, 0, 8, 14, 0, 8, 142, 0, 8, 78, 0, 9, 252, 96, 7, 256, 0, 8, 81, 0, 8, 17, 85, 8, 131, 82, 7, 31, 0, 8, 113, 0, 8, 49, 0, 9, 194, 80, 7, 10, 0, 8, 97, 0, 8, 33, 0, 9, 162, 0, 8, 1, 0, 8, 129, 0, 8, 65, 0, 9, 226, 80, 7, 6, 0, 8, 89, 0, 8, 25, 0, 9, 146, 83, 7, 59, 0, 8, 121, 0, 8, 57, 0, 9, 210, 81, 7, 17, 0, 8, 105, 0, 8, 41, 0, 9, 178, 0, 8, 9, 0, 8, 137, 0, 8, 73, 0, 9, 242, 80, 7, 4, 0, 8, 85, 0, 8, 21, 80, 8, 258, 83, 7, 43, 0, 8, 117, 0, 8, 53, 0, 9, 202, 81, 7, 13, 0, 8, 101, 0, 8, 37, 0, 9, 170, 0, 8, 5, 0, 8, 133, 0, 8, 69, 0, 9, 234, 80, 7, 8, 0, 8, 93, 0, 8, 29, 0, 9, 154, 84, 7, 83, 0, 8, 125, 0, 8, 61, 0, 9, 218, 82, 7, 23, 0, 8, 109, 0, 8, 45, 0, 9, 186,
+ 0, 8, 13, 0, 8, 141, 0, 8, 77, 0, 9, 250, 80, 7, 3, 0, 8, 83, 0, 8, 19, 85, 8, 195, 83, 7, 35, 0, 8, 115, 0, 8, 51, 0, 9, 198, 81, 7, 11, 0, 8, 99, 0, 8, 35, 0, 9, 166, 0, 8, 3, 0, 8, 131, 0, 8, 67, 0, 9, 230, 80, 7, 7, 0, 8, 91, 0, 8, 27, 0, 9, 150, 84, 7, 67, 0, 8, 123, 0, 8, 59, 0, 9, 214, 82, 7, 19, 0, 8, 107, 0, 8, 43, 0, 9, 182, 0, 8, 11, 0, 8, 139, 0, 8, 75, 0, 9, 246, 80, 7, 5, 0, 8, 87, 0, 8, 23, 192, 8, 0, 83, 7, 51, 0, 8, 119, 0, 8, 55, 0, 9, 206, 81, 7, 15, 0, 8, 103, 0, 8, 39, 0, 9, 174, 0, 8, 7, 0, 8, 135, 0, 8, 71, 0, 9, 238, 80, 7, 9, 0, 8, 95, 0, 8, 31, 0, 9, 158, 84, 7, 99, 0, 8, 127, 0, 8, 63, 0, 9, 222, 82, 7, 27, 0, 8, 111, 0, 8, 47, 0, 9, 190, 0, 8, 15, 0, 8, 143, 0, 8, 79, 0, 9, 254, 96, 7, 256, 0, 8, 80, 0, 8, 16, 84, 8, 115, 82, 7, 31, 0, 8, 112, 0, 8, 48, 0, 9, 193, 80, 7, 10, 0, 8, 96, 0, 8, 32, 0, 9, 161, 0, 8, 0, 0, 8, 128, 0, 8, 64, 0, 9, 225, 80, 7, 6, 0, 8, 88, 0, 8, 24, 0, 9, 145, 83, 7, 59, 0, 8, 120, 0, 8, 56, 0, 9, 209, 81, 7, 17, 0, 8, 104, 0, 8, 40, 0, 9, 177, 0, 8, 8, 0, 8, 136, 0, 8, 72, 0, 9, 241, 80, 7, 4, 0, 8, 84, 0, 8, 20, 85, 8, 227, 83, 7, 43, 0, 8, 116, 0, 8, 52, 0, 9, 201, 81, 7, 13, 0, 8, 100, 0, 8, 36, 0, 9, 169, 0, 8, 4, 0, 8, 132, 0, 8, 68, 0, 9, 233, 80, 7, 8, 0, 8, 92, 0, 8, 28, 0, 9, 153, 84, 7, 83, 0, 8, 124, 0, 8, 60, 0, 9, 217, 82, 7, 23, 0, 8, 108, 0, 8, 44, 0, 9, 185, 0, 8, 12, 0, 8, 140, 0, 8, 76, 0, 9, 249, 80, 7, 3, 0, 8, 82, 0, 8, 18, 85, 8, 163, 83, 7, 35, 0, 8, 114, 0, 8, 50, 0, 9, 197, 81, 7, 11, 0, 8, 98, 0, 8, 34, 0, 9, 165, 0, 8, 2, 0, 8, 130, 0, 8, 66, 0, 9, 229, 80, 7, 7, 0, 8, 90, 0, 8, 26, 0, 9, 149, 84, 7, 67, 0, 8, 122, 0, 8, 58, 0, 9, 213, 82, 7, 19, 0, 8, 106, 0, 8, 42, 0, 9, 181, 0, 8, 10, 0, 8, 138, 0, 8, 74, 0, 9, 245, 80, 7, 5, 0, 8, 86, 0, 8, 22, 192, 8, 0, 83, 7, 51, 0, 8, 118, 0, 8, 54, 0, 9, 205, 81, 7, 15, 0, 8, 102, 0, 8, 38, 0, 9, 173, 0, 8, 6, 0, 8, 134, 0, 8, 70, 0, 9, 237, 80, 7, 9, 0, 8, 94, 0, 8, 30, 0, 9, 157, 84, 7, 99, 0, 8, 126, 0, 8, 62, 0, 9, 221, 82, 7, 27, 0, 8, 110, 0, 8, 46, 0, 9, 189, 0, 8,
+ 14, 0, 8, 142, 0, 8, 78, 0, 9, 253, 96, 7, 256, 0, 8, 81, 0, 8, 17, 85, 8, 131, 82, 7, 31, 0, 8, 113, 0, 8, 49, 0, 9, 195, 80, 7, 10, 0, 8, 97, 0, 8, 33, 0, 9, 163, 0, 8, 1, 0, 8, 129, 0, 8, 65, 0, 9, 227, 80, 7, 6, 0, 8, 89, 0, 8, 25, 0, 9, 147, 83, 7, 59, 0, 8, 121, 0, 8, 57, 0, 9, 211, 81, 7, 17, 0, 8, 105, 0, 8, 41, 0, 9, 179, 0, 8, 9, 0, 8, 137, 0, 8, 73, 0, 9, 243, 80, 7, 4, 0, 8, 85, 0, 8, 21, 80, 8, 258, 83, 7, 43, 0, 8, 117, 0, 8, 53, 0, 9, 203, 81, 7, 13, 0, 8, 101, 0, 8, 37, 0, 9, 171, 0, 8, 5, 0, 8, 133, 0, 8, 69, 0, 9, 235, 80, 7, 8, 0, 8, 93, 0, 8, 29, 0, 9, 155, 84, 7, 83, 0, 8, 125, 0, 8, 61, 0, 9, 219, 82, 7, 23, 0, 8, 109, 0, 8, 45, 0, 9, 187, 0, 8, 13, 0, 8, 141, 0, 8, 77, 0, 9, 251, 80, 7, 3, 0, 8, 83, 0, 8, 19, 85, 8, 195, 83, 7, 35, 0, 8, 115, 0, 8, 51, 0, 9, 199, 81, 7, 11, 0, 8, 99, 0, 8, 35, 0, 9, 167, 0, 8, 3, 0, 8, 131, 0, 8, 67, 0, 9, 231, 80, 7, 7, 0, 8, 91, 0, 8, 27, 0, 9, 151, 84, 7, 67, 0, 8, 123, 0, 8, 59, 0, 9, 215, 82, 7, 19, 0, 8, 107, 0, 8, 43, 0, 9, 183, 0, 8, 11, 0, 8, 139, 0, 8, 75, 0, 9, 247, 80, 7, 5, 0, 8, 87, 0, 8, 23, 192, 8, 0, 83, 7, 51, 0, 8, 119, 0, 8, 55, 0, 9, 207, 81, 7, 15, 0, 8, 103, 0, 8, 39, 0, 9, 175, 0, 8, 7, 0, 8, 135, 0, 8, 71, 0, 9, 239, 80, 7, 9, 0, 8, 95, 0, 8, 31, 0, 9, 159, 84, 7, 99, 0, 8, 127, 0, 8, 63, 0, 9, 223, 82, 7, 27, 0, 8, 111, 0, 8, 47, 0, 9, 191, 0, 8, 15, 0, 8, 143, 0, 8, 79, 0, 9, 255};
+ //UPGRADE_NOTE: Final was removed from the declaration of 'fixed_td'. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
+ internal static readonly int[] fixed_td = new int[]{80, 5, 1, 87, 5, 257, 83, 5, 17, 91, 5, 4097, 81, 5, 5, 89, 5, 1025, 85, 5, 65, 93, 5, 16385, 80, 5, 3, 88, 5, 513, 84, 5, 33, 92, 5, 8193, 82, 5, 9, 90, 5, 2049, 86, 5, 129, 192, 5, 24577, 80, 5, 2, 87, 5, 385, 83, 5, 25, 91, 5, 6145, 81, 5, 7, 89, 5, 1537, 85, 5, 97, 93, 5, 24577, 80, 5, 4, 88, 5, 769, 84, 5, 49, 92, 5, 12289, 82, 5, 13, 90, 5, 3073, 86, 5, 193, 192, 5, 24577};
+
+ // Tables for deflate from PKZIP's appnote.txt.
+ //UPGRADE_NOTE: Final was removed from the declaration of 'cplens'. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
+ internal static readonly int[] cplens = new int[]{3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
+
+ // see note #13 above about 258
+ //UPGRADE_NOTE: Final was removed from the declaration of 'cplext'. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
+ internal static readonly int[] cplext = new int[]{0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 112, 112};
+
+ //UPGRADE_NOTE: Final was removed from the declaration of 'cpdist'. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
+ internal static readonly int[] cpdist = new int[]{1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
+
+ //UPGRADE_NOTE: Final was removed from the declaration of 'cpdext'. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
+ internal static readonly int[] cpdext = new int[]{0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13};
+
+ // If BMAX needs to be larger than 16, then h and x[] should be uLong.
+ internal const int BMAX = 15; // maximum bit length of any code
+
+ internal int[] hn = null; // hufts used in space
+ internal int[] v = null; // work area for huft_build
+ internal int[] c = null; // bit length count table
+ internal int[] r = null; // table entry for structure assignment
+ internal int[] u = null; // table stack
+ internal int[] x = null; // bit offsets, then code stack
+
+ private int huft_build(int[] b, int bindex, int n, int s, int[] d, int[] e, int[] t, int[] m, int[] hp, int[] hn, int[] v)
+ {
+ // Given a list of code lengths and a maximum table size, make a set of
+ // tables to decode that set of codes. Return Z_OK on success, Z_BUF_ERROR
+ // if the given code set is incomplete (the tables are still built in this
+ // case), Z_DATA_ERROR if the input is invalid (an over-subscribed set of
+ // lengths), or Z_MEM_ERROR if not enough memory.
+
+ int a; // counter for codes of length k
+ int f; // i repeats in table every f entries
+ int g; // maximum code length
+ int h; // table level
+ int i; // counter, current code
+ int j; // counter
+ int k; // number of bits in current code
+ int l; // bits per table (returned in m)
+ int mask; // (1 << w) - 1, to avoid cc -O bug on HP
+ int p; // pointer into c[], b[], or v[]
+ int q; // points to current table
+ int w; // bits before this table == (l * h)
+ int xp; // pointer into x
+ int y; // number of dummy codes added
+ int z; // number of entries in current table
+
+ // Generate counts for each bit length
+
+ p = 0; i = n;
+ do
+ {
+ c[b[bindex + p]]++; p++; i--; // assume all entries <= BMAX
+ }
+ while (i != 0);
+
+ if (c[0] == n)
+ {
+ // null input--all zero length codes
+ t[0] = - 1;
+ m[0] = 0;
+ return Z_OK;
+ }
+
+ // Find minimum and maximum length, bound *m by those
+ l = m[0];
+ for (j = 1; j <= BMAX; j++)
+ if (c[j] != 0)
+ break;
+ k = j; // minimum code length
+ if (l < j)
+ {
+ l = j;
+ }
+ for (i = BMAX; i != 0; i--)
+ {
+ if (c[i] != 0)
+ break;
+ }
+ g = i; // maximum code length
+ if (l > i)
+ {
+ l = i;
+ }
+ m[0] = l;
+
+ // Adjust last length count to fill out codes, if needed
+ for (y = 1 << j; j < i; j++, y <<= 1)
+ {
+ if ((y -= c[j]) < 0)
+ {
+ return Z_DATA_ERROR;
+ }
+ }
+ if ((y -= c[i]) < 0)
+ {
+ return Z_DATA_ERROR;
+ }
+ c[i] += y;
+
+ // Generate starting offsets into the value table for each length
+ x[1] = j = 0;
+ p = 1; xp = 2;
+ while (--i != 0)
+ {
+ // note that i == g from above
+ x[xp] = (j += c[p]);
+ xp++;
+ p++;
+ }
+
+ // Make a table of values in order of bit lengths
+ i = 0; p = 0;
+ do
+ {
+ if ((j = b[bindex + p]) != 0)
+ {
+ v[x[j]++] = i;
+ }
+ p++;
+ }
+ while (++i < n);
+ n = x[g]; // set n to length of v
+
+ // Generate the Huffman codes and for each, make the table entries
+ x[0] = i = 0; // first Huffman code is zero
+ p = 0; // grab values in bit order
+ h = - 1; // no tables yet--level -1
+ w = - l; // bits decoded == (l * h)
+ u[0] = 0; // just to keep compilers happy
+ q = 0; // ditto
+ z = 0; // ditto
+
+ // go through the bit lengths (k already is bits in shortest code)
+ for (; k <= g; k++)
+ {
+ a = c[k];
+ while (a-- != 0)
+ {
+ // here i is the Huffman code of length k bits for value *p
+ // make tables up to required level
+ while (k > w + l)
+ {
+ h++;
+ w += l; // previous table always l bits
+ // compute minimum size table less than or equal to l bits
+ z = g - w;
+ z = (z > l)?l:z; // table size upper limit
+ if ((f = 1 << (j = k - w)) > a + 1)
+ {
+ // try a k-w bit table
+ // too few codes for k-w bit table
+ f -= (a + 1); // deduct codes from patterns left
+ xp = k;
+ if (j < z)
+ {
+ while (++j < z)
+ {
+ // try smaller tables up to z bits
+ if ((f <<= 1) <= c[++xp])
+ break; // enough codes to use up j bits
+ f -= c[xp]; // else deduct codes from patterns
+ }
+ }
+ }
+ z = 1 << j; // table entries for j-bit table
+
+ // allocate new table
+ if (hn[0] + z > MANY)
+ {
+ // (note: doesn't matter for fixed)
+ return Z_DATA_ERROR; // overflow of MANY
+ }
+ u[h] = q = hn[0]; // DEBUG
+ hn[0] += z;
+
+ // connect to last table, if there is one
+ if (h != 0)
+ {
+ x[h] = i; // save pattern for backing up
+ r[0] = (sbyte) j; // bits in this table
+ r[1] = (sbyte) l; // bits to dump before this table
+ j = SharedUtils.URShift(i, (w - l));
+ r[2] = (int) (q - u[h - 1] - j); // offset to this table
+ Array.Copy(r, 0, hp, (u[h - 1] + j) * 3, 3); // connect to last table
+ }
+ else
+ {
+ t[0] = q; // first table is returned result
+ }
+ }
+
+ // set up table entry in r
+ r[1] = (sbyte) (k - w);
+ if (p >= n)
+ {
+ r[0] = 128 + 64; // out of values--invalid code
+ }
+ else if (v[p] < s)
+ {
+ r[0] = (sbyte) (v[p] < 256?0:32 + 64); // 256 is end-of-block
+ r[2] = v[p++]; // simple code is just the value
+ }
+ else
+ {
+ r[0] = (sbyte) (e[v[p] - s] + 16 + 64); // non-simple--look up in lists
+ r[2] = d[v[p++] - s];
+ }
+
+ // fill code-like entries with r
+ f = 1 << (k - w);
+ for (j = SharedUtils.URShift(i, w); j < z; j += f)
+ {
+ Array.Copy(r, 0, hp, (q + j) * 3, 3);
+ }
+
+ // backwards increment the k-bit code i
+ for (j = 1 << (k - 1); (i & j) != 0; j = SharedUtils.URShift(j, 1))
+ {
+ i ^= j;
+ }
+ i ^= j;
+
+ // backup over finished tables
+ mask = (1 << w) - 1; // needed on HP, cc -O bug
+ while ((i & mask) != x[h])
+ {
+ h--; // don't need to update q
+ w -= l;
+ mask = (1 << w) - 1;
+ }
+ }
+ }
+ // Return Z_BUF_ERROR if we were given an incomplete table
+ return y != 0 && g != 1?Z_BUF_ERROR:Z_OK;
+ }
+
+ internal int inflate_trees_bits(int[] c, int[] bb, int[] tb, int[] hp, ZlibCodec z)
+ {
+ int result;
+ initWorkArea(19);
+ hn[0] = 0;
+ result = huft_build(c, 0, 19, 19, null, null, tb, bb, hp, hn, v);
+
+ if (result == Z_DATA_ERROR)
+ {
+ z.Message = "oversubscribed dynamic bit lengths tree";
+ }
+ else if (result == Z_BUF_ERROR || bb[0] == 0)
+ {
+ z.Message = "incomplete dynamic bit lengths tree";
+ result = Z_DATA_ERROR;
+ }
+ return result;
+ }
+
+ internal int inflate_trees_dynamic(int nl, int nd, int[] c, int[] bl, int[] bd, int[] tl, int[] td, int[] hp, ZlibCodec z)
+ {
+ int result;
+
+ // build literal/length tree
+ initWorkArea(288);
+ hn[0] = 0;
+ result = huft_build(c, 0, nl, 257, cplens, cplext, tl, bl, hp, hn, v);
+ if (result != Z_OK || bl[0] == 0)
+ {
+ if (result == Z_DATA_ERROR)
+ {
+ z.Message = "oversubscribed literal/length tree";
+ }
+ else if (result != Z_MEM_ERROR)
+ {
+ z.Message = "incomplete literal/length tree";
+ result = Z_DATA_ERROR;
+ }
+ return result;
+ }
+
+ // build distance tree
+ initWorkArea(288);
+ result = huft_build(c, nl, nd, 0, cpdist, cpdext, td, bd, hp, hn, v);
+
+ if (result != Z_OK || (bd[0] == 0 && nl > 257))
+ {
+ if (result == Z_DATA_ERROR)
+ {
+ z.Message = "oversubscribed distance tree";
+ }
+ else if (result == Z_BUF_ERROR)
+ {
+ z.Message = "incomplete distance tree";
+ result = Z_DATA_ERROR;
+ }
+ else if (result != Z_MEM_ERROR)
+ {
+ z.Message = "empty distance tree with lengths";
+ result = Z_DATA_ERROR;
+ }
+ return result;
+ }
+
+ return Z_OK;
+ }
+
+ internal static int inflate_trees_fixed(int[] bl, int[] bd, int[][] tl, int[][] td, ZlibCodec z)
+ {
+ bl[0] = fixed_bl;
+ bd[0] = fixed_bd;
+ tl[0] = fixed_tl;
+ td[0] = fixed_td;
+ return Z_OK;
+ }
+
+ private void initWorkArea(int vsize)
+ {
+ if (hn == null)
+ {
+ hn = new int[1];
+ v = new int[vsize];
+ c = new int[BMAX + 1];
+ r = new int[3];
+ u = new int[BMAX];
+ x = new int[BMAX + 1];
+ }
+ else
+ {
+ if (v.Length < vsize)
+ {
+ v = new int[vsize];
+ }
+ Array.Clear(v,0,vsize);
+ Array.Clear(c,0,BMAX+1);
+ r[0]=0; r[1]=0; r[2]=0;
+ // for(int i=0; i<BMAX; i++){u[i]=0;}
+ //Array.Copy(c, 0, u, 0, BMAX);
+ Array.Clear(u,0,BMAX);
+ // for(int i=0; i<BMAX+1; i++){x[i]=0;}
+ //Array.Copy(c, 0, x, 0, BMAX + 1);
+ Array.Clear(x,0,BMAX+1);
+ }
+ }
+ }
+}
\ No newline at end of file
--- /dev/null
+// Inflate.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2010-January-08 18:32:12>
+//
+// ------------------------------------------------------------------
+//
+// This module defines classes for decompression. This code is derived
+// from the jzlib implementation of zlib, but significantly modified.
+// The object model is not the same, and many of the behaviors are
+// different. Nonetheless, in keeping with the license for jzlib, I am
+// reproducing the copyright to that code here.
+//
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in
+// the documentation and/or other materials provided with the distribution.
+//
+// 3. The names of the authors may not be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
+// INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
+// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// -----------------------------------------------------------------------
+//
+// This program is based on zlib-1.1.3; credit to authors
+// Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
+// and contributors of zlib.
+//
+// -----------------------------------------------------------------------
+
+
+using System;
+namespace Ionic.Zlib
+{
+ sealed class InflateBlocks
+ {
+ private const int MANY = 1440;
+
+ // Table for deflate from PKZIP's appnote.txt.
+ internal static readonly int[] border = new int[]
+ { 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 };
+
+ private enum InflateBlockMode
+ {
+ TYPE = 0, // get type bits (3, including end bit)
+ LENS = 1, // get lengths for stored
+ STORED = 2, // processing stored block
+ TABLE = 3, // get table lengths
+ BTREE = 4, // get bit lengths tree for a dynamic block
+ DTREE = 5, // get length, distance trees for a dynamic block
+ CODES = 6, // processing fixed or dynamic block
+ DRY = 7, // output remaining window bytes
+ DONE = 8, // finished last block, done
+ BAD = 9, // ot a data error--stuck here
+ }
+
+ private InflateBlockMode mode; // current inflate_block mode
+
+ internal int left; // if STORED, bytes left to copy
+
+ internal int table; // table lengths (14 bits)
+ internal int index; // index into blens (or border)
+ internal int[] blens; // bit lengths of codes
+ internal int[] bb = new int[1]; // bit length tree depth
+ internal int[] tb = new int[1]; // bit length decoding tree
+
+ internal InflateCodes codes = new InflateCodes(); // if CODES, current state
+
+ internal int last; // true if this block is the last block
+
+ internal ZlibCodec _codec; // pointer back to this zlib stream
+
+ // mode independent information
+ internal int bitk; // bits in bit buffer
+ internal int bitb; // bit buffer
+ internal int[] hufts; // single malloc for tree space
+ internal byte[] window; // sliding window
+ internal int end; // one byte after sliding window
+ internal int readAt; // window read pointer
+ internal int writeAt; // window write pointer
+ internal System.Object checkfn; // check function
+ internal uint check; // check on output
+
+ internal InfTree inftree = new InfTree();
+
+ internal InflateBlocks(ZlibCodec codec, System.Object checkfn, int w)
+ {
+ _codec = codec;
+ hufts = new int[MANY * 3];
+ window = new byte[w];
+ end = w;
+ this.checkfn = checkfn;
+ mode = InflateBlockMode.TYPE;
+ Reset();
+ }
+
+ internal uint Reset()
+ {
+ uint oldCheck = check;
+ mode = InflateBlockMode.TYPE;
+ bitk = 0;
+ bitb = 0;
+ readAt = writeAt = 0;
+
+ if (checkfn != null)
+ _codec._Adler32 = check = Adler.Adler32(0, null, 0, 0);
+ return oldCheck;
+ }
+
+
+ internal int Process(int r)
+ {
+ int t; // temporary storage
+ int b; // bit buffer
+ int k; // bits in bit buffer
+ int p; // input data pointer
+ int n; // bytes available there
+ int q; // output window write pointer
+ int m; // bytes to end of window or read pointer
+
+ // copy input/output information to locals (UPDATE macro restores)
+
+ p = _codec.NextIn;
+ n = _codec.AvailableBytesIn;
+ b = bitb;
+ k = bitk;
+
+ q = writeAt;
+ m = (int)(q < readAt ? readAt - q - 1 : end - q);
+
+
+ // process input based on current state
+ while (true)
+ {
+ switch (mode)
+ {
+ case InflateBlockMode.TYPE:
+
+ while (k < (3))
+ {
+ if (n != 0)
+ {
+ r = ZlibConstants.Z_OK;
+ }
+ else
+ {
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+
+ n--;
+ b |= (_codec.InputBuffer[p++] & 0xff) << k;
+ k += 8;
+ }
+ t = (int)(b & 7);
+ last = t & 1;
+
+ switch ((uint)t >> 1)
+ {
+ case 0: // stored
+ b >>= 3; k -= (3);
+ t = k & 7; // go to byte boundary
+ b >>= t; k -= t;
+ mode = InflateBlockMode.LENS; // get length of stored block
+ break;
+
+ case 1: // fixed
+ int[] bl = new int[1];
+ int[] bd = new int[1];
+ int[][] tl = new int[1][];
+ int[][] td = new int[1][];
+ InfTree.inflate_trees_fixed(bl, bd, tl, td, _codec);
+ codes.Init(bl[0], bd[0], tl[0], 0, td[0], 0);
+ b >>= 3; k -= 3;
+ mode = InflateBlockMode.CODES;
+ break;
+
+ case 2: // dynamic
+ b >>= 3; k -= 3;
+ mode = InflateBlockMode.TABLE;
+ break;
+
+ case 3: // illegal
+ b >>= 3; k -= 3;
+ mode = InflateBlockMode.BAD;
+ _codec.Message = "invalid block type";
+ r = ZlibConstants.Z_DATA_ERROR;
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+ break;
+
+ case InflateBlockMode.LENS:
+
+ while (k < (32))
+ {
+ if (n != 0)
+ {
+ r = ZlibConstants.Z_OK;
+ }
+ else
+ {
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+ ;
+ n--;
+ b |= (_codec.InputBuffer[p++] & 0xff) << k;
+ k += 8;
+ }
+
+ if ( ( ((~b)>>16) & 0xffff) != (b & 0xffff))
+ {
+ mode = InflateBlockMode.BAD;
+ _codec.Message = "invalid stored block lengths";
+ r = ZlibConstants.Z_DATA_ERROR;
+
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+ left = (b & 0xffff);
+ b = k = 0; // dump bits
+ mode = left != 0 ? InflateBlockMode.STORED : (last != 0 ? InflateBlockMode.DRY : InflateBlockMode.TYPE);
+ break;
+
+ case InflateBlockMode.STORED:
+ if (n == 0)
+ {
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+
+ if (m == 0)
+ {
+ if (q == end && readAt != 0)
+ {
+ q = 0; m = (int)(q < readAt ? readAt - q - 1 : end - q);
+ }
+ if (m == 0)
+ {
+ writeAt = q;
+ r = Flush(r);
+ q = writeAt; m = (int)(q < readAt ? readAt - q - 1 : end - q);
+ if (q == end && readAt != 0)
+ {
+ q = 0; m = (int)(q < readAt ? readAt - q - 1 : end - q);
+ }
+ if (m == 0)
+ {
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+ }
+ }
+ r = ZlibConstants.Z_OK;
+
+ t = left;
+ if (t > n)
+ t = n;
+ if (t > m)
+ t = m;
+ Array.Copy(_codec.InputBuffer, p, window, q, t);
+ p += t; n -= t;
+ q += t; m -= t;
+ if ((left -= t) != 0)
+ break;
+ mode = last != 0 ? InflateBlockMode.DRY : InflateBlockMode.TYPE;
+ break;
+
+ case InflateBlockMode.TABLE:
+
+ while (k < (14))
+ {
+ if (n != 0)
+ {
+ r = ZlibConstants.Z_OK;
+ }
+ else
+ {
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+
+ n--;
+ b |= (_codec.InputBuffer[p++] & 0xff) << k;
+ k += 8;
+ }
+
+ table = t = (b & 0x3fff);
+ if ((t & 0x1f) > 29 || ((t >> 5) & 0x1f) > 29)
+ {
+ mode = InflateBlockMode.BAD;
+ _codec.Message = "too many length or distance symbols";
+ r = ZlibConstants.Z_DATA_ERROR;
+
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+ t = 258 + (t & 0x1f) + ((t >> 5) & 0x1f);
+ if (blens == null || blens.Length < t)
+ {
+ blens = new int[t];
+ }
+ else
+ {
+ Array.Clear(blens, 0, t);
+ // for (int i = 0; i < t; i++)
+ // {
+ // blens[i] = 0;
+ // }
+ }
+
+ b >>= 14;
+ k -= 14;
+
+
+ index = 0;
+ mode = InflateBlockMode.BTREE;
+ goto case InflateBlockMode.BTREE;
+
+ case InflateBlockMode.BTREE:
+ while (index < 4 + (table >> 10))
+ {
+ while (k < (3))
+ {
+ if (n != 0)
+ {
+ r = ZlibConstants.Z_OK;
+ }
+ else
+ {
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+
+ n--;
+ b |= (_codec.InputBuffer[p++] & 0xff) << k;
+ k += 8;
+ }
+
+ blens[border[index++]] = b & 7;
+
+ b >>= 3; k -= 3;
+ }
+
+ while (index < 19)
+ {
+ blens[border[index++]] = 0;
+ }
+
+ bb[0] = 7;
+ t = inftree.inflate_trees_bits(blens, bb, tb, hufts, _codec);
+ if (t != ZlibConstants.Z_OK)
+ {
+ r = t;
+ if (r == ZlibConstants.Z_DATA_ERROR)
+ {
+ blens = null;
+ mode = InflateBlockMode.BAD;
+ }
+
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+
+ index = 0;
+ mode = InflateBlockMode.DTREE;
+ goto case InflateBlockMode.DTREE;
+
+ case InflateBlockMode.DTREE:
+ while (true)
+ {
+ t = table;
+ if (!(index < 258 + (t & 0x1f) + ((t >> 5) & 0x1f)))
+ {
+ break;
+ }
+
+ int i, j, c;
+
+ t = bb[0];
+
+ while (k < t)
+ {
+ if (n != 0)
+ {
+ r = ZlibConstants.Z_OK;
+ }
+ else
+ {
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+
+ n--;
+ b |= (_codec.InputBuffer[p++] & 0xff) << k;
+ k += 8;
+ }
+
+ t = hufts[(tb[0] + (b & InternalInflateConstants.InflateMask[t])) * 3 + 1];
+ c = hufts[(tb[0] + (b & InternalInflateConstants.InflateMask[t])) * 3 + 2];
+
+ if (c < 16)
+ {
+ b >>= t; k -= t;
+ blens[index++] = c;
+ }
+ else
+ {
+ // c == 16..18
+ i = c == 18 ? 7 : c - 14;
+ j = c == 18 ? 11 : 3;
+
+ while (k < (t + i))
+ {
+ if (n != 0)
+ {
+ r = ZlibConstants.Z_OK;
+ }
+ else
+ {
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+
+ n--;
+ b |= (_codec.InputBuffer[p++] & 0xff) << k;
+ k += 8;
+ }
+
+ b >>= t; k -= t;
+
+ j += (b & InternalInflateConstants.InflateMask[i]);
+
+ b >>= i; k -= i;
+
+ i = index;
+ t = table;
+ if (i + j > 258 + (t & 0x1f) + ((t >> 5) & 0x1f) || (c == 16 && i < 1))
+ {
+ blens = null;
+ mode = InflateBlockMode.BAD;
+ _codec.Message = "invalid bit length repeat";
+ r = ZlibConstants.Z_DATA_ERROR;
+
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+
+ c = (c == 16) ? blens[i-1] : 0;
+ do
+ {
+ blens[i++] = c;
+ }
+ while (--j != 0);
+ index = i;
+ }
+ }
+
+ tb[0] = -1;
+ {
+ int[] bl = new int[] { 9 }; // must be <= 9 for lookahead assumptions
+ int[] bd = new int[] { 6 }; // must be <= 9 for lookahead assumptions
+ int[] tl = new int[1];
+ int[] td = new int[1];
+
+ t = table;
+ t = inftree.inflate_trees_dynamic(257 + (t & 0x1f), 1 + ((t >> 5) & 0x1f), blens, bl, bd, tl, td, hufts, _codec);
+
+ if (t != ZlibConstants.Z_OK)
+ {
+ if (t == ZlibConstants.Z_DATA_ERROR)
+ {
+ blens = null;
+ mode = InflateBlockMode.BAD;
+ }
+ r = t;
+
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+ codes.Init(bl[0], bd[0], hufts, tl[0], hufts, td[0]);
+ }
+ mode = InflateBlockMode.CODES;
+ goto case InflateBlockMode.CODES;
+
+ case InflateBlockMode.CODES:
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+
+ r = codes.Process(this, r);
+ if (r != ZlibConstants.Z_STREAM_END)
+ {
+ return Flush(r);
+ }
+
+ r = ZlibConstants.Z_OK;
+ p = _codec.NextIn;
+ n = _codec.AvailableBytesIn;
+ b = bitb;
+ k = bitk;
+ q = writeAt;
+ m = (int)(q < readAt ? readAt - q - 1 : end - q);
+
+ if (last == 0)
+ {
+ mode = InflateBlockMode.TYPE;
+ break;
+ }
+ mode = InflateBlockMode.DRY;
+ goto case InflateBlockMode.DRY;
+
+ case InflateBlockMode.DRY:
+ writeAt = q;
+ r = Flush(r);
+ q = writeAt; m = (int)(q < readAt ? readAt - q - 1 : end - q);
+ if (readAt != writeAt)
+ {
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+ mode = InflateBlockMode.DONE;
+ goto case InflateBlockMode.DONE;
+
+ case InflateBlockMode.DONE:
+ r = ZlibConstants.Z_STREAM_END;
+ bitb = b;
+ bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+
+ case InflateBlockMode.BAD:
+ r = ZlibConstants.Z_DATA_ERROR;
+
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+
+
+ default:
+ r = ZlibConstants.Z_STREAM_ERROR;
+
+ bitb = b; bitk = k;
+ _codec.AvailableBytesIn = n;
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ writeAt = q;
+ return Flush(r);
+ }
+ }
+ }
+
+
+ internal void Free()
+ {
+ Reset();
+ window = null;
+ hufts = null;
+ }
+
+ internal void SetDictionary(byte[] d, int start, int n)
+ {
+ Array.Copy(d, start, window, 0, n);
+ readAt = writeAt = n;
+ }
+
+ // Returns true if inflate is currently at the end of a block generated
+ // by Z_SYNC_FLUSH or Z_FULL_FLUSH.
+ internal int SyncPoint()
+ {
+ return mode == InflateBlockMode.LENS ? 1 : 0;
+ }
+
+ // copy as much as possible from the sliding window to the output area
+ internal int Flush(int r)
+ {
+ int nBytes;
+
+ for (int pass=0; pass < 2; pass++)
+ {
+ if (pass==0)
+ {
+ // compute number of bytes to copy as far as end of window
+ nBytes = (int)((readAt <= writeAt ? writeAt : end) - readAt);
+ }
+ else
+ {
+ // compute bytes to copy
+ nBytes = writeAt - readAt;
+ }
+
+ // workitem 8870
+ if (nBytes == 0)
+ {
+ if (r == ZlibConstants.Z_BUF_ERROR)
+ r = ZlibConstants.Z_OK;
+ return r;
+ }
+
+ if (nBytes > _codec.AvailableBytesOut)
+ nBytes = _codec.AvailableBytesOut;
+
+ if (nBytes != 0 && r == ZlibConstants.Z_BUF_ERROR)
+ r = ZlibConstants.Z_OK;
+
+ // update counters
+ _codec.AvailableBytesOut -= nBytes;
+ _codec.TotalBytesOut += nBytes;
+
+ // update check information
+ if (checkfn != null)
+ _codec._Adler32 = check = Adler.Adler32(check, window, readAt, nBytes);
+
+ // copy as far as end of window
+ Array.Copy(window, readAt, _codec.OutputBuffer, _codec.NextOut, nBytes);
+ _codec.NextOut += nBytes;
+ readAt += nBytes;
+
+ // see if more to copy at beginning of window
+ if (readAt == end && pass == 0)
+ {
+ // wrap pointers
+ readAt = 0;
+ if (writeAt == end)
+ writeAt = 0;
+ }
+ else pass++;
+ }
+
+ // done
+ return r;
+ }
+ }
+
+
+ internal static class InternalInflateConstants
+ {
+ // And'ing with mask[n] masks the lower n bits
+ internal static readonly int[] InflateMask = new int[] {
+ 0x00000000, 0x00000001, 0x00000003, 0x00000007,
+ 0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f,
+ 0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff,
+ 0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff, 0x0000ffff };
+ }
+
+
+ sealed class InflateCodes
+ {
+ // waiting for "i:"=input,
+ // "o:"=output,
+ // "x:"=nothing
+ private const int START = 0; // x: set up for LEN
+ private const int LEN = 1; // i: get length/literal/eob next
+ private const int LENEXT = 2; // i: getting length extra (have base)
+ private const int DIST = 3; // i: get distance next
+ private const int DISTEXT = 4; // i: getting distance extra
+ private const int COPY = 5; // o: copying bytes in window, waiting for space
+ private const int LIT = 6; // o: got literal, waiting for output space
+ private const int WASH = 7; // o: got eob, possibly still output waiting
+ private const int END = 8; // x: got eob and all data flushed
+ private const int BADCODE = 9; // x: got error
+
+ internal int mode; // current inflate_codes mode
+
+ // mode dependent information
+ internal int len;
+
+ internal int[] tree; // pointer into tree
+ internal int tree_index = 0;
+ internal int need; // bits needed
+
+ internal int lit;
+
+ // if EXT or COPY, where and how much
+ internal int bitsToGet; // bits to get for extra
+ internal int dist; // distance back to copy from
+
+ internal byte lbits; // ltree bits decoded per branch
+ internal byte dbits; // dtree bits decoder per branch
+ internal int[] ltree; // literal/length/eob tree
+ internal int ltree_index; // literal/length/eob tree
+ internal int[] dtree; // distance tree
+ internal int dtree_index; // distance tree
+
+ internal InflateCodes()
+ {
+ }
+
+ internal void Init(int bl, int bd, int[] tl, int tl_index, int[] td, int td_index)
+ {
+ mode = START;
+ lbits = (byte)bl;
+ dbits = (byte)bd;
+ ltree = tl;
+ ltree_index = tl_index;
+ dtree = td;
+ dtree_index = td_index;
+ tree = null;
+ }
+
+ internal int Process(InflateBlocks blocks, int r)
+ {
+ int j; // temporary storage
+ int tindex; // temporary pointer
+ int e; // extra bits or operation
+ int b = 0; // bit buffer
+ int k = 0; // bits in bit buffer
+ int p = 0; // input data pointer
+ int n; // bytes available there
+ int q; // output window write pointer
+ int m; // bytes to end of window or read pointer
+ int f; // pointer to copy strings from
+
+ ZlibCodec z = blocks._codec;
+
+ // copy input/output information to locals (UPDATE macro restores)
+ p = z.NextIn;
+ n = z.AvailableBytesIn;
+ b = blocks.bitb;
+ k = blocks.bitk;
+ q = blocks.writeAt; m = q < blocks.readAt ? blocks.readAt - q - 1 : blocks.end - q;
+
+ // process input and output based on current state
+ while (true)
+ {
+ switch (mode)
+ {
+ // waiting for "i:"=input, "o:"=output, "x:"=nothing
+ case START: // x: set up for LEN
+ if (m >= 258 && n >= 10)
+ {
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n;
+ z.TotalBytesIn += p - z.NextIn;
+ z.NextIn = p;
+ blocks.writeAt = q;
+ r = InflateFast(lbits, dbits, ltree, ltree_index, dtree, dtree_index, blocks, z);
+
+ p = z.NextIn;
+ n = z.AvailableBytesIn;
+ b = blocks.bitb;
+ k = blocks.bitk;
+ q = blocks.writeAt; m = q < blocks.readAt ? blocks.readAt - q - 1 : blocks.end - q;
+
+ if (r != ZlibConstants.Z_OK)
+ {
+ mode = (r == ZlibConstants.Z_STREAM_END) ? WASH : BADCODE;
+ break;
+ }
+ }
+ need = lbits;
+ tree = ltree;
+ tree_index = ltree_index;
+
+ mode = LEN;
+ goto case LEN;
+
+ case LEN: // i: get length/literal/eob next
+ j = need;
+
+ while (k < j)
+ {
+ if (n != 0)
+ r = ZlibConstants.Z_OK;
+ else
+ {
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n;
+ z.TotalBytesIn += p - z.NextIn;
+ z.NextIn = p;
+ blocks.writeAt = q;
+ return blocks.Flush(r);
+ }
+ n--;
+ b |= (z.InputBuffer[p++] & 0xff) << k;
+ k += 8;
+ }
+
+ tindex = (tree_index + (b & InternalInflateConstants.InflateMask[j])) * 3;
+
+ b >>= (tree[tindex + 1]);
+ k -= (tree[tindex + 1]);
+
+ e = tree[tindex];
+
+ if (e == 0)
+ {
+ // literal
+ lit = tree[tindex + 2];
+ mode = LIT;
+ break;
+ }
+ if ((e & 16) != 0)
+ {
+ // length
+ bitsToGet = e & 15;
+ len = tree[tindex + 2];
+ mode = LENEXT;
+ break;
+ }
+ if ((e & 64) == 0)
+ {
+ // next table
+ need = e;
+ tree_index = tindex / 3 + tree[tindex + 2];
+ break;
+ }
+ if ((e & 32) != 0)
+ {
+ // end of block
+ mode = WASH;
+ break;
+ }
+ mode = BADCODE; // invalid code
+ z.Message = "invalid literal/length code";
+ r = ZlibConstants.Z_DATA_ERROR;
+
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n;
+ z.TotalBytesIn += p - z.NextIn;
+ z.NextIn = p;
+ blocks.writeAt = q;
+ return blocks.Flush(r);
+
+
+ case LENEXT: // i: getting length extra (have base)
+ j = bitsToGet;
+
+ while (k < j)
+ {
+ if (n != 0)
+ r = ZlibConstants.Z_OK;
+ else
+ {
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ blocks.writeAt = q;
+ return blocks.Flush(r);
+ }
+ n--; b |= (z.InputBuffer[p++] & 0xff) << k;
+ k += 8;
+ }
+
+ len += (b & InternalInflateConstants.InflateMask[j]);
+
+ b >>= j;
+ k -= j;
+
+ need = dbits;
+ tree = dtree;
+ tree_index = dtree_index;
+ mode = DIST;
+ goto case DIST;
+
+ case DIST: // i: get distance next
+ j = need;
+
+ while (k < j)
+ {
+ if (n != 0)
+ r = ZlibConstants.Z_OK;
+ else
+ {
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ blocks.writeAt = q;
+ return blocks.Flush(r);
+ }
+ n--; b |= (z.InputBuffer[p++] & 0xff) << k;
+ k += 8;
+ }
+
+ tindex = (tree_index + (b & InternalInflateConstants.InflateMask[j])) * 3;
+
+ b >>= tree[tindex + 1];
+ k -= tree[tindex + 1];
+
+ e = (tree[tindex]);
+ if ((e & 0x10) != 0)
+ {
+ // distance
+ bitsToGet = e & 15;
+ dist = tree[tindex + 2];
+ mode = DISTEXT;
+ break;
+ }
+ if ((e & 64) == 0)
+ {
+ // next table
+ need = e;
+ tree_index = tindex / 3 + tree[tindex + 2];
+ break;
+ }
+ mode = BADCODE; // invalid code
+ z.Message = "invalid distance code";
+ r = ZlibConstants.Z_DATA_ERROR;
+
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ blocks.writeAt = q;
+ return blocks.Flush(r);
+
+
+ case DISTEXT: // i: getting distance extra
+ j = bitsToGet;
+
+ while (k < j)
+ {
+ if (n != 0)
+ r = ZlibConstants.Z_OK;
+ else
+ {
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ blocks.writeAt = q;
+ return blocks.Flush(r);
+ }
+ n--; b |= (z.InputBuffer[p++] & 0xff) << k;
+ k += 8;
+ }
+
+ dist += (b & InternalInflateConstants.InflateMask[j]);
+
+ b >>= j;
+ k -= j;
+
+ mode = COPY;
+ goto case COPY;
+
+ case COPY: // o: copying bytes in window, waiting for space
+ f = q - dist;
+ while (f < 0)
+ {
+ // modulo window size-"while" instead
+ f += blocks.end; // of "if" handles invalid distances
+ }
+ while (len != 0)
+ {
+ if (m == 0)
+ {
+ if (q == blocks.end && blocks.readAt != 0)
+ {
+ q = 0; m = q < blocks.readAt ? blocks.readAt - q - 1 : blocks.end - q;
+ }
+ if (m == 0)
+ {
+ blocks.writeAt = q; r = blocks.Flush(r);
+ q = blocks.writeAt; m = q < blocks.readAt ? blocks.readAt - q - 1 : blocks.end - q;
+
+ if (q == blocks.end && blocks.readAt != 0)
+ {
+ q = 0; m = q < blocks.readAt ? blocks.readAt - q - 1 : blocks.end - q;
+ }
+
+ if (m == 0)
+ {
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n;
+ z.TotalBytesIn += p - z.NextIn;
+ z.NextIn = p;
+ blocks.writeAt = q;
+ return blocks.Flush(r);
+ }
+ }
+ }
+
+ blocks.window[q++] = blocks.window[f++]; m--;
+
+ if (f == blocks.end)
+ f = 0;
+ len--;
+ }
+ mode = START;
+ break;
+
+ case LIT: // o: got literal, waiting for output space
+ if (m == 0)
+ {
+ if (q == blocks.end && blocks.readAt != 0)
+ {
+ q = 0; m = q < blocks.readAt ? blocks.readAt - q - 1 : blocks.end - q;
+ }
+ if (m == 0)
+ {
+ blocks.writeAt = q; r = blocks.Flush(r);
+ q = blocks.writeAt; m = q < blocks.readAt ? blocks.readAt - q - 1 : blocks.end - q;
+
+ if (q == blocks.end && blocks.readAt != 0)
+ {
+ q = 0; m = q < blocks.readAt ? blocks.readAt - q - 1 : blocks.end - q;
+ }
+ if (m == 0)
+ {
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ blocks.writeAt = q;
+ return blocks.Flush(r);
+ }
+ }
+ }
+ r = ZlibConstants.Z_OK;
+
+ blocks.window[q++] = (byte)lit; m--;
+
+ mode = START;
+ break;
+
+ case WASH: // o: got eob, possibly more output
+ if (k > 7)
+ {
+ // return unused byte, if any
+ k -= 8;
+ n++;
+ p--; // can always return one
+ }
+
+ blocks.writeAt = q; r = blocks.Flush(r);
+ q = blocks.writeAt; m = q < blocks.readAt ? blocks.readAt - q - 1 : blocks.end - q;
+
+ if (blocks.readAt != blocks.writeAt)
+ {
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ blocks.writeAt = q;
+ return blocks.Flush(r);
+ }
+ mode = END;
+ goto case END;
+
+ case END:
+ r = ZlibConstants.Z_STREAM_END;
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ blocks.writeAt = q;
+ return blocks.Flush(r);
+
+ case BADCODE: // x: got error
+
+ r = ZlibConstants.Z_DATA_ERROR;
+
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ blocks.writeAt = q;
+ return blocks.Flush(r);
+
+ default:
+ r = ZlibConstants.Z_STREAM_ERROR;
+
+ blocks.bitb = b; blocks.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ blocks.writeAt = q;
+ return blocks.Flush(r);
+ }
+ }
+ }
+
+
+ // Called with number of bytes left to write in window at least 258
+ // (the maximum string length) and number of input bytes available
+ // at least ten. The ten bytes are six bytes for the longest length/
+ // distance pair plus four bytes for overloading the bit buffer.
+
+ internal int InflateFast(int bl, int bd, int[] tl, int tl_index, int[] td, int td_index, InflateBlocks s, ZlibCodec z)
+ {
+ int t; // temporary pointer
+ int[] tp; // temporary pointer
+ int tp_index; // temporary pointer
+ int e; // extra bits or operation
+ int b; // bit buffer
+ int k; // bits in bit buffer
+ int p; // input data pointer
+ int n; // bytes available there
+ int q; // output window write pointer
+ int m; // bytes to end of window or read pointer
+ int ml; // mask for literal/length tree
+ int md; // mask for distance tree
+ int c; // bytes to copy
+ int d; // distance back to copy from
+ int r; // copy source pointer
+
+ int tp_index_t_3; // (tp_index+t)*3
+
+ // load input, output, bit values
+ p = z.NextIn; n = z.AvailableBytesIn; b = s.bitb; k = s.bitk;
+ q = s.writeAt; m = q < s.readAt ? s.readAt - q - 1 : s.end - q;
+
+ // initialize masks
+ ml = InternalInflateConstants.InflateMask[bl];
+ md = InternalInflateConstants.InflateMask[bd];
+
+ // do until not enough input or output space for fast loop
+ do
+ {
+ // assume called with m >= 258 && n >= 10
+ // get literal/length code
+ while (k < (20))
+ {
+ // max bits for literal/length code
+ n--;
+ b |= (z.InputBuffer[p++] & 0xff) << k; k += 8;
+ }
+
+ t = b & ml;
+ tp = tl;
+ tp_index = tl_index;
+ tp_index_t_3 = (tp_index + t) * 3;
+ if ((e = tp[tp_index_t_3]) == 0)
+ {
+ b >>= (tp[tp_index_t_3 + 1]); k -= (tp[tp_index_t_3 + 1]);
+
+ s.window[q++] = (byte)tp[tp_index_t_3 + 2];
+ m--;
+ continue;
+ }
+ do
+ {
+
+ b >>= (tp[tp_index_t_3 + 1]); k -= (tp[tp_index_t_3 + 1]);
+
+ if ((e & 16) != 0)
+ {
+ e &= 15;
+ c = tp[tp_index_t_3 + 2] + ((int)b & InternalInflateConstants.InflateMask[e]);
+
+ b >>= e; k -= e;
+
+ // decode distance base of block to copy
+ while (k < 15)
+ {
+ // max bits for distance code
+ n--;
+ b |= (z.InputBuffer[p++] & 0xff) << k; k += 8;
+ }
+
+ t = b & md;
+ tp = td;
+ tp_index = td_index;
+ tp_index_t_3 = (tp_index + t) * 3;
+ e = tp[tp_index_t_3];
+
+ do
+ {
+
+ b >>= (tp[tp_index_t_3 + 1]); k -= (tp[tp_index_t_3 + 1]);
+
+ if ((e & 16) != 0)
+ {
+ // get extra bits to add to distance base
+ e &= 15;
+ while (k < e)
+ {
+ // get extra bits (up to 13)
+ n--;
+ b |= (z.InputBuffer[p++] & 0xff) << k; k += 8;
+ }
+
+ d = tp[tp_index_t_3 + 2] + (b & InternalInflateConstants.InflateMask[e]);
+
+ b >>= e; k -= e;
+
+ // do the copy
+ m -= c;
+ if (q >= d)
+ {
+ // offset before dest
+ // just copy
+ r = q - d;
+ if (q - r > 0 && 2 > (q - r))
+ {
+ s.window[q++] = s.window[r++]; // minimum count is three,
+ s.window[q++] = s.window[r++]; // so unroll loop a little
+ c -= 2;
+ }
+ else
+ {
+ Array.Copy(s.window, r, s.window, q, 2);
+ q += 2; r += 2; c -= 2;
+ }
+ }
+ else
+ {
+ // else offset after destination
+ r = q - d;
+ do
+ {
+ r += s.end; // force pointer in window
+ }
+ while (r < 0); // covers invalid distances
+ e = s.end - r;
+ if (c > e)
+ {
+ // if source crosses,
+ c -= e; // wrapped copy
+ if (q - r > 0 && e > (q - r))
+ {
+ do
+ {
+ s.window[q++] = s.window[r++];
+ }
+ while (--e != 0);
+ }
+ else
+ {
+ Array.Copy(s.window, r, s.window, q, e);
+ q += e; r += e; e = 0;
+ }
+ r = 0; // copy rest from start of window
+ }
+ }
+
+ // copy all or what's left
+ if (q - r > 0 && c > (q - r))
+ {
+ do
+ {
+ s.window[q++] = s.window[r++];
+ }
+ while (--c != 0);
+ }
+ else
+ {
+ Array.Copy(s.window, r, s.window, q, c);
+ q += c; r += c; c = 0;
+ }
+ break;
+ }
+ else if ((e & 64) == 0)
+ {
+ t += tp[tp_index_t_3 + 2];
+ t += (b & InternalInflateConstants.InflateMask[e]);
+ tp_index_t_3 = (tp_index + t) * 3;
+ e = tp[tp_index_t_3];
+ }
+ else
+ {
+ z.Message = "invalid distance code";
+
+ c = z.AvailableBytesIn - n; c = (k >> 3) < c ? k >> 3 : c; n += c; p -= c; k -= (c << 3);
+
+ s.bitb = b; s.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ s.writeAt = q;
+
+ return ZlibConstants.Z_DATA_ERROR;
+ }
+ }
+ while (true);
+ break;
+ }
+
+ if ((e & 64) == 0)
+ {
+ t += tp[tp_index_t_3 + 2];
+ t += (b & InternalInflateConstants.InflateMask[e]);
+ tp_index_t_3 = (tp_index + t) * 3;
+ if ((e = tp[tp_index_t_3]) == 0)
+ {
+ b >>= (tp[tp_index_t_3 + 1]); k -= (tp[tp_index_t_3 + 1]);
+ s.window[q++] = (byte)tp[tp_index_t_3 + 2];
+ m--;
+ break;
+ }
+ }
+ else if ((e & 32) != 0)
+ {
+ c = z.AvailableBytesIn - n; c = (k >> 3) < c ? k >> 3 : c; n += c; p -= c; k -= (c << 3);
+
+ s.bitb = b; s.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ s.writeAt = q;
+
+ return ZlibConstants.Z_STREAM_END;
+ }
+ else
+ {
+ z.Message = "invalid literal/length code";
+
+ c = z.AvailableBytesIn - n; c = (k >> 3) < c ? k >> 3 : c; n += c; p -= c; k -= (c << 3);
+
+ s.bitb = b; s.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ s.writeAt = q;
+
+ return ZlibConstants.Z_DATA_ERROR;
+ }
+ }
+ while (true);
+ }
+ while (m >= 258 && n >= 10);
+
+ // not enough input or output--restore pointers and return
+ c = z.AvailableBytesIn - n; c = (k >> 3) < c ? k >> 3 : c; n += c; p -= c; k -= (c << 3);
+
+ s.bitb = b; s.bitk = k;
+ z.AvailableBytesIn = n; z.TotalBytesIn += p - z.NextIn; z.NextIn = p;
+ s.writeAt = q;
+
+ return ZlibConstants.Z_OK;
+ }
+ }
+
+
+ internal sealed class InflateManager
+ {
+ // preset dictionary flag in zlib header
+ private const int PRESET_DICT = 0x20;
+
+ private const int Z_DEFLATED = 8;
+
+ private enum InflateManagerMode
+ {
+ METHOD = 0, // waiting for method byte
+ FLAG = 1, // waiting for flag byte
+ DICT4 = 2, // four dictionary check bytes to go
+ DICT3 = 3, // three dictionary check bytes to go
+ DICT2 = 4, // two dictionary check bytes to go
+ DICT1 = 5, // one dictionary check byte to go
+ DICT0 = 6, // waiting for inflateSetDictionary
+ BLOCKS = 7, // decompressing blocks
+ CHECK4 = 8, // four check bytes to go
+ CHECK3 = 9, // three check bytes to go
+ CHECK2 = 10, // two check bytes to go
+ CHECK1 = 11, // one check byte to go
+ DONE = 12, // finished check, done
+ BAD = 13, // got an error--stay here
+ }
+
+ private InflateManagerMode mode; // current inflate mode
+ internal ZlibCodec _codec; // pointer back to this zlib stream
+
+ // mode dependent information
+ internal int method; // if FLAGS, method byte
+
+ // if CHECK, check values to compare
+ internal uint computedCheck; // computed check value
+ internal uint expectedCheck; // stream check value
+
+ // if BAD, inflateSync's marker bytes count
+ internal int marker;
+
+ // mode independent information
+ //internal int nowrap; // flag for no wrapper
+ private bool _handleRfc1950HeaderBytes = true;
+ internal bool HandleRfc1950HeaderBytes
+ {
+ get { return _handleRfc1950HeaderBytes; }
+ set { _handleRfc1950HeaderBytes = value; }
+ }
+ internal int wbits; // log2(window size) (8..15, defaults to 15)
+
+ internal InflateBlocks blocks; // current inflate_blocks state
+
+ public InflateManager() { }
+
+ public InflateManager(bool expectRfc1950HeaderBytes)
+ {
+ _handleRfc1950HeaderBytes = expectRfc1950HeaderBytes;
+ }
+
+ internal int Reset()
+ {
+ _codec.TotalBytesIn = _codec.TotalBytesOut = 0;
+ _codec.Message = null;
+ mode = HandleRfc1950HeaderBytes ? InflateManagerMode.METHOD : InflateManagerMode.BLOCKS;
+ blocks.Reset();
+ return ZlibConstants.Z_OK;
+ }
+
+ internal int End()
+ {
+ if (blocks != null)
+ blocks.Free();
+ blocks = null;
+ return ZlibConstants.Z_OK;
+ }
+
+ internal int Initialize(ZlibCodec codec, int w)
+ {
+ _codec = codec;
+ _codec.Message = null;
+ blocks = null;
+
+ // handle undocumented nowrap option (no zlib header or check)
+ //nowrap = 0;
+ //if (w < 0)
+ //{
+ // w = - w;
+ // nowrap = 1;
+ //}
+
+ // set window size
+ if (w < 8 || w > 15)
+ {
+ End();
+ throw new ZlibException("Bad window size.");
+
+ //return ZlibConstants.Z_STREAM_ERROR;
+ }
+ wbits = w;
+
+ blocks = new InflateBlocks(codec,
+ HandleRfc1950HeaderBytes ? this : null,
+ 1 << w);
+
+ // reset state
+ Reset();
+ return ZlibConstants.Z_OK;
+ }
+
+
+ internal int Inflate(FlushType flush)
+ {
+ int b;
+
+ if (_codec.InputBuffer == null)
+ throw new ZlibException("InputBuffer is null. ");
+
+// int f = (flush == FlushType.Finish)
+// ? ZlibConstants.Z_BUF_ERROR
+// : ZlibConstants.Z_OK;
+
+ // workitem 8870
+ int f = ZlibConstants.Z_OK;
+ int r = ZlibConstants.Z_BUF_ERROR;
+
+ while (true)
+ {
+ switch (mode)
+ {
+ case InflateManagerMode.METHOD:
+ if (_codec.AvailableBytesIn == 0) return r;
+ r = f;
+ _codec.AvailableBytesIn--;
+ _codec.TotalBytesIn++;
+ if (((method = _codec.InputBuffer[_codec.NextIn++]) & 0xf) != Z_DEFLATED)
+ {
+ mode = InflateManagerMode.BAD;
+ _codec.Message = String.Format("unknown compression method (0x{0:X2})", method);
+ marker = 5; // can't try inflateSync
+ break;
+ }
+ if ((method >> 4) + 8 > wbits)
+ {
+ mode = InflateManagerMode.BAD;
+ _codec.Message = String.Format("invalid window size ({0})", (method >> 4) + 8);
+ marker = 5; // can't try inflateSync
+ break;
+ }
+ mode = InflateManagerMode.FLAG;
+ break;
+
+
+ case InflateManagerMode.FLAG:
+ if (_codec.AvailableBytesIn == 0) return r;
+ r = f;
+ _codec.AvailableBytesIn--;
+ _codec.TotalBytesIn++;
+ b = (_codec.InputBuffer[_codec.NextIn++]) & 0xff;
+
+ if ((((method << 8) + b) % 31) != 0)
+ {
+ mode = InflateManagerMode.BAD;
+ _codec.Message = "incorrect header check";
+ marker = 5; // can't try inflateSync
+ break;
+ }
+
+ mode = ((b & PRESET_DICT) == 0)
+ ? InflateManagerMode.BLOCKS
+ : InflateManagerMode.DICT4;
+ break;
+
+ case InflateManagerMode.DICT4:
+ if (_codec.AvailableBytesIn == 0) return r;
+ r = f;
+ _codec.AvailableBytesIn--;
+ _codec.TotalBytesIn++;
+ expectedCheck = (uint)((_codec.InputBuffer[_codec.NextIn++] << 24) & 0xff000000);
+ mode = InflateManagerMode.DICT3;
+ break;
+
+ case InflateManagerMode.DICT3:
+ if (_codec.AvailableBytesIn == 0) return r;
+ r = f;
+ _codec.AvailableBytesIn--;
+ _codec.TotalBytesIn++;
+ expectedCheck += (uint)((_codec.InputBuffer[_codec.NextIn++] << 16) & 0x00ff0000);
+ mode = InflateManagerMode.DICT2;
+ break;
+
+ case InflateManagerMode.DICT2:
+
+ if (_codec.AvailableBytesIn == 0) return r;
+ r = f;
+ _codec.AvailableBytesIn--;
+ _codec.TotalBytesIn++;
+ expectedCheck += (uint)((_codec.InputBuffer[_codec.NextIn++] << 8) & 0x0000ff00);
+ mode = InflateManagerMode.DICT1;
+ break;
+
+
+ case InflateManagerMode.DICT1:
+ if (_codec.AvailableBytesIn == 0) return r;
+ r = f;
+ _codec.AvailableBytesIn--; _codec.TotalBytesIn++;
+ expectedCheck += (uint)(_codec.InputBuffer[_codec.NextIn++] & 0x000000ff);
+ _codec._Adler32 = expectedCheck;
+ mode = InflateManagerMode.DICT0;
+ return ZlibConstants.Z_NEED_DICT;
+
+
+ case InflateManagerMode.DICT0:
+ mode = InflateManagerMode.BAD;
+ _codec.Message = "need dictionary";
+ marker = 0; // can try inflateSync
+ return ZlibConstants.Z_STREAM_ERROR;
+
+
+ case InflateManagerMode.BLOCKS:
+ r = blocks.Process(r);
+ if (r == ZlibConstants.Z_DATA_ERROR)
+ {
+ mode = InflateManagerMode.BAD;
+ marker = 0; // can try inflateSync
+ break;
+ }
+
+ if (r == ZlibConstants.Z_OK) r = f;
+
+ if (r != ZlibConstants.Z_STREAM_END)
+ return r;
+
+ r = f;
+ computedCheck = blocks.Reset();
+ if (!HandleRfc1950HeaderBytes)
+ {
+ mode = InflateManagerMode.DONE;
+ return ZlibConstants.Z_STREAM_END;
+ }
+ mode = InflateManagerMode.CHECK4;
+ break;
+
+ case InflateManagerMode.CHECK4:
+ if (_codec.AvailableBytesIn == 0) return r;
+ r = f;
+ _codec.AvailableBytesIn--;
+ _codec.TotalBytesIn++;
+ expectedCheck = (uint)((_codec.InputBuffer[_codec.NextIn++] << 24) & 0xff000000);
+ mode = InflateManagerMode.CHECK3;
+ break;
+
+ case InflateManagerMode.CHECK3:
+ if (_codec.AvailableBytesIn == 0) return r;
+ r = f;
+ _codec.AvailableBytesIn--; _codec.TotalBytesIn++;
+ expectedCheck += (uint)((_codec.InputBuffer[_codec.NextIn++] << 16) & 0x00ff0000);
+ mode = InflateManagerMode.CHECK2;
+ break;
+
+ case InflateManagerMode.CHECK2:
+ if (_codec.AvailableBytesIn == 0) return r;
+ r = f;
+ _codec.AvailableBytesIn--;
+ _codec.TotalBytesIn++;
+ expectedCheck += (uint)((_codec.InputBuffer[_codec.NextIn++] << 8) & 0x0000ff00);
+ mode = InflateManagerMode.CHECK1;
+ break;
+
+ case InflateManagerMode.CHECK1:
+ if (_codec.AvailableBytesIn == 0) return r;
+ r = f;
+ _codec.AvailableBytesIn--; _codec.TotalBytesIn++;
+ expectedCheck += (uint)(_codec.InputBuffer[_codec.NextIn++] & 0x000000ff);
+ if (computedCheck != expectedCheck)
+ {
+ mode = InflateManagerMode.BAD;
+ _codec.Message = "incorrect data check";
+ marker = 5; // can't try inflateSync
+ break;
+ }
+ mode = InflateManagerMode.DONE;
+ return ZlibConstants.Z_STREAM_END;
+
+ case InflateManagerMode.DONE:
+ return ZlibConstants.Z_STREAM_END;
+
+ case InflateManagerMode.BAD:
+ throw new ZlibException(String.Format("Bad state ({0})", _codec.Message));
+
+ default:
+ throw new ZlibException("Stream error.");
+
+ }
+ }
+ }
+
+
+
+ internal int SetDictionary(byte[] dictionary)
+ {
+ int index = 0;
+ int length = dictionary.Length;
+ if (mode != InflateManagerMode.DICT0)
+ throw new ZlibException("Stream error.");
+
+ if (Adler.Adler32(1, dictionary, 0, dictionary.Length) != _codec._Adler32)
+ {
+ return ZlibConstants.Z_DATA_ERROR;
+ }
+
+ _codec._Adler32 = Adler.Adler32(0, null, 0, 0);
+
+ if (length >= (1 << wbits))
+ {
+ length = (1 << wbits) - 1;
+ index = dictionary.Length - length;
+ }
+ blocks.SetDictionary(dictionary, index, length);
+ mode = InflateManagerMode.BLOCKS;
+ return ZlibConstants.Z_OK;
+ }
+
+
+ private static readonly byte[] mark = new byte[] { 0, 0, 0xff, 0xff };
+
+ internal int Sync()
+ {
+ int n; // number of bytes to look at
+ int p; // pointer to bytes
+ int m; // number of marker bytes found in a row
+ long r, w; // temporaries to save total_in and total_out
+
+ // set up
+ if (mode != InflateManagerMode.BAD)
+ {
+ mode = InflateManagerMode.BAD;
+ marker = 0;
+ }
+ if ((n = _codec.AvailableBytesIn) == 0)
+ return ZlibConstants.Z_BUF_ERROR;
+ p = _codec.NextIn;
+ m = marker;
+
+ // search
+ while (n != 0 && m < 4)
+ {
+ if (_codec.InputBuffer[p] == mark[m])
+ {
+ m++;
+ }
+ else if (_codec.InputBuffer[p] != 0)
+ {
+ m = 0;
+ }
+ else
+ {
+ m = 4 - m;
+ }
+ p++; n--;
+ }
+
+ // restore
+ _codec.TotalBytesIn += p - _codec.NextIn;
+ _codec.NextIn = p;
+ _codec.AvailableBytesIn = n;
+ marker = m;
+
+ // return no joy or set up to restart on a new block
+ if (m != 4)
+ {
+ return ZlibConstants.Z_DATA_ERROR;
+ }
+ r = _codec.TotalBytesIn;
+ w = _codec.TotalBytesOut;
+ Reset();
+ _codec.TotalBytesIn = r;
+ _codec.TotalBytesOut = w;
+ mode = InflateManagerMode.BLOCKS;
+ return ZlibConstants.Z_OK;
+ }
+
+
+ // Returns true if inflate is currently at the end of a block generated
+ // by Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP
+ // implementation to provide an additional safety check. PPP uses Z_SYNC_FLUSH
+ // but removes the length bytes of the resulting empty stored block. When
+ // decompressing, PPP checks that at the end of input packet, inflate is
+ // waiting for these length bytes.
+ internal int SyncPoint(ZlibCodec z)
+ {
+ return blocks.SyncPoint();
+ }
+ }
+}
\ No newline at end of file
--- /dev/null
+//#define Trace
+
+// ParallelDeflateOutputStream.cs
+// ------------------------------------------------------------------
+//
+// A DeflateStream that does compression only, it uses a
+// divide-and-conquer approach with multiple threads to exploit multiple
+// CPUs for the DEFLATE computation.
+//
+// last saved: <2011-July-31 14:49:40>
+//
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009-2011 by Dino Chiesa
+// All rights reserved!
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using Ionic.Zlib;
+using System.IO;
+
+
+namespace Ionic.Zlib
+{
+ internal class WorkItem
+ {
+ public byte[] buffer;
+ public byte[] compressed;
+ public int crc;
+ public int index;
+ public int ordinal;
+ public int inputBytesAvailable;
+ public int compressedBytesAvailable;
+ public ZlibCodec compressor;
+
+ public WorkItem(int size,
+ Ionic.Zlib.CompressionLevel compressLevel,
+ CompressionStrategy strategy,
+ int ix)
+ {
+ this.buffer= new byte[size];
+ // alloc 5 bytes overhead for every block (margin of safety= 2)
+ int n = size + ((size / 32768)+1) * 5 * 2;
+ this.compressed = new byte[n];
+ this.compressor = new ZlibCodec();
+ this.compressor.InitializeDeflate(compressLevel, false);
+ this.compressor.OutputBuffer = this.compressed;
+ this.compressor.InputBuffer = this.buffer;
+ this.index = ix;
+ }
+ }
+
+ /// <summary>
+ /// A class for compressing streams using the
+ /// Deflate algorithm with multiple threads.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This class performs DEFLATE compression through writing. For
+ /// more information on the Deflate algorithm, see IETF RFC 1951,
+ /// "DEFLATE Compressed Data Format Specification version 1.3."
+ /// </para>
+ ///
+ /// <para>
+ /// This class is similar to <see cref="Ionic.Zlib.DeflateStream"/>, except
+ /// that this class is for compression only, and this implementation uses an
+ /// approach that employs multiple worker threads to perform the DEFLATE. On
+ /// a multi-cpu or multi-core computer, the performance of this class can be
+ /// significantly higher than the single-threaded DeflateStream, particularly
+ /// for larger streams. How large? Anything over 10mb is a good candidate
+ /// for parallel compression.
+ /// </para>
+ ///
+ /// <para>
+ /// The tradeoff is that this class uses more memory and more CPU than the
+ /// vanilla DeflateStream, and also is less efficient as a compressor. For
+ /// large files the size of the compressed data stream can be less than 1%
+ /// larger than the size of a compressed data stream from the vanialla
+ /// DeflateStream. For smaller files the difference can be larger. The
+ /// difference will also be larger if you set the BufferSize to be lower than
+ /// the default value. Your mileage may vary. Finally, for small files, the
+ /// ParallelDeflateOutputStream can be much slower than the vanilla
+ /// DeflateStream, because of the overhead associated to using the thread
+ /// pool.
+ /// </para>
+ ///
+ /// </remarks>
+ /// <seealso cref="Ionic.Zlib.DeflateStream" />
+ internal class ParallelDeflateOutputStream : System.IO.Stream
+ {
+
+ private static readonly int IO_BUFFER_SIZE_DEFAULT = 64 * 1024; // 128k
+ private static readonly int BufferPairsPerCore = 4;
+
+ private System.Collections.Generic.List<WorkItem> _pool;
+ private bool _leaveOpen;
+ private bool emitting;
+ private System.IO.Stream _outStream;
+ private int _maxBufferPairs;
+ private int _bufferSize = IO_BUFFER_SIZE_DEFAULT;
+ private AutoResetEvent _newlyCompressedBlob;
+ //private ManualResetEvent _writingDone;
+ //private ManualResetEvent _sessionReset;
+ private object _outputLock = new object();
+ private bool _isClosed;
+ private bool _firstWriteDone;
+ private int _currentlyFilling;
+ private int _lastFilled;
+ private int _lastWritten;
+ private int _latestCompressed;
+ private int _Crc32;
+ private Ionic.Crc.CRC32 _runningCrc;
+ private object _latestLock = new object();
+ private System.Collections.Generic.Queue<int> _toWrite;
+ private System.Collections.Generic.Queue<int> _toFill;
+ private Int64 _totalBytesProcessed;
+ private Ionic.Zlib.CompressionLevel _compressLevel;
+ private volatile Exception _pendingException;
+ private bool _handlingException;
+ private object _eLock = new Object(); // protects _pendingException
+
+ // This bitfield is used only when Trace is defined.
+ //private TraceBits _DesiredTrace = TraceBits.Write | TraceBits.WriteBegin |
+ //TraceBits.WriteDone | TraceBits.Lifecycle | TraceBits.Fill | TraceBits.Flush |
+ //TraceBits.Session;
+
+ //private TraceBits _DesiredTrace = TraceBits.WriteBegin | TraceBits.WriteDone | TraceBits.Synch | TraceBits.Lifecycle | TraceBits.Session ;
+
+ private TraceBits _DesiredTrace =
+ TraceBits.Session |
+ TraceBits.Compress |
+ TraceBits.WriteTake |
+ TraceBits.WriteEnter |
+ TraceBits.EmitEnter |
+ TraceBits.EmitDone |
+ TraceBits.EmitLock |
+ TraceBits.EmitSkip |
+ TraceBits.EmitBegin;
+
+ /// <summary>
+ /// Create a ParallelDeflateOutputStream.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// This stream compresses data written into it via the DEFLATE
+ /// algorithm (see RFC 1951), and writes out the compressed byte stream.
+ /// </para>
+ ///
+ /// <para>
+ /// The instance will use the default compression level, the default
+ /// buffer sizes and the default number of threads and buffers per
+ /// thread.
+ /// </para>
+ ///
+ /// <para>
+ /// This class is similar to <see cref="Ionic.Zlib.DeflateStream"/>,
+ /// except that this implementation uses an approach that employs
+ /// multiple worker threads to perform the DEFLATE. On a multi-cpu or
+ /// multi-core computer, the performance of this class can be
+ /// significantly higher than the single-threaded DeflateStream,
+ /// particularly for larger streams. How large? Anything over 10mb is
+ /// a good candidate for parallel compression.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to use a ParallelDeflateOutputStream to compress
+ /// data. It reads a file, compresses it, and writes the compressed data to
+ /// a second, output file.
+ ///
+ /// <code>
+ /// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
+ /// int n= -1;
+ /// String outputFile = fileToCompress + ".compressed";
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
+ /// {
+ /// using (var raw = System.IO.File.Create(outputFile))
+ /// {
+ /// using (Stream compressor = new ParallelDeflateOutputStream(raw))
+ /// {
+ /// while ((n= input.Read(buffer, 0, buffer.Length)) != 0)
+ /// {
+ /// compressor.Write(buffer, 0, n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Dim buffer As Byte() = New Byte(4096) {}
+ /// Dim n As Integer = -1
+ /// Dim outputFile As String = (fileToCompress & ".compressed")
+ /// Using input As Stream = File.OpenRead(fileToCompress)
+ /// Using raw As FileStream = File.Create(outputFile)
+ /// Using compressor As Stream = New ParallelDeflateOutputStream(raw)
+ /// Do While (n <> 0)
+ /// If (n > 0) Then
+ /// compressor.Write(buffer, 0, n)
+ /// End If
+ /// n = input.Read(buffer, 0, buffer.Length)
+ /// Loop
+ /// End Using
+ /// End Using
+ /// End Using
+ /// </code>
+ /// </example>
+ /// <param name="stream">The stream to which compressed data will be written.</param>
+ public ParallelDeflateOutputStream(System.IO.Stream stream)
+ : this(stream, CompressionLevel.Default, CompressionStrategy.Default, false)
+ {
+ }
+
+ /// <summary>
+ /// Create a ParallelDeflateOutputStream using the specified CompressionLevel.
+ /// </summary>
+ /// <remarks>
+ /// See the <see cref="ParallelDeflateOutputStream(System.IO.Stream)"/>
+ /// constructor for example code.
+ /// </remarks>
+ /// <param name="stream">The stream to which compressed data will be written.</param>
+ /// <param name="level">A tuning knob to trade speed for effectiveness.</param>
+ public ParallelDeflateOutputStream(System.IO.Stream stream, CompressionLevel level)
+ : this(stream, level, CompressionStrategy.Default, false)
+ {
+ }
+
+ /// <summary>
+ /// Create a ParallelDeflateOutputStream and specify whether to leave the captive stream open
+ /// when the ParallelDeflateOutputStream is closed.
+ /// </summary>
+ /// <remarks>
+ /// See the <see cref="ParallelDeflateOutputStream(System.IO.Stream)"/>
+ /// constructor for example code.
+ /// </remarks>
+ /// <param name="stream">The stream to which compressed data will be written.</param>
+ /// <param name="leaveOpen">
+ /// true if the application would like the stream to remain open after inflation/deflation.
+ /// </param>
+ public ParallelDeflateOutputStream(System.IO.Stream stream, bool leaveOpen)
+ : this(stream, CompressionLevel.Default, CompressionStrategy.Default, leaveOpen)
+ {
+ }
+
+ /// <summary>
+ /// Create a ParallelDeflateOutputStream and specify whether to leave the captive stream open
+ /// when the ParallelDeflateOutputStream is closed.
+ /// </summary>
+ /// <remarks>
+ /// See the <see cref="ParallelDeflateOutputStream(System.IO.Stream)"/>
+ /// constructor for example code.
+ /// </remarks>
+ /// <param name="stream">The stream to which compressed data will be written.</param>
+ /// <param name="level">A tuning knob to trade speed for effectiveness.</param>
+ /// <param name="leaveOpen">
+ /// true if the application would like the stream to remain open after inflation/deflation.
+ /// </param>
+ public ParallelDeflateOutputStream(System.IO.Stream stream, CompressionLevel level, bool leaveOpen)
+ : this(stream, CompressionLevel.Default, CompressionStrategy.Default, leaveOpen)
+ {
+ }
+
+ /// <summary>
+ /// Create a ParallelDeflateOutputStream using the specified
+ /// CompressionLevel and CompressionStrategy, and specifying whether to
+ /// leave the captive stream open when the ParallelDeflateOutputStream is
+ /// closed.
+ /// </summary>
+ /// <remarks>
+ /// See the <see cref="ParallelDeflateOutputStream(System.IO.Stream)"/>
+ /// constructor for example code.
+ /// </remarks>
+ /// <param name="stream">The stream to which compressed data will be written.</param>
+ /// <param name="level">A tuning knob to trade speed for effectiveness.</param>
+ /// <param name="strategy">
+ /// By tweaking this parameter, you may be able to optimize the compression for
+ /// data with particular characteristics.
+ /// </param>
+ /// <param name="leaveOpen">
+ /// true if the application would like the stream to remain open after inflation/deflation.
+ /// </param>
+ public ParallelDeflateOutputStream(System.IO.Stream stream,
+ CompressionLevel level,
+ CompressionStrategy strategy,
+ bool leaveOpen)
+ {
+ TraceOutput(TraceBits.Lifecycle | TraceBits.Session, "-------------------------------------------------------");
+ TraceOutput(TraceBits.Lifecycle | TraceBits.Session, "Create {0:X8}", this.GetHashCode());
+ _outStream = stream;
+ _compressLevel= level;
+ Strategy = strategy;
+ _leaveOpen = leaveOpen;
+ this.MaxBufferPairs = 16; // default
+ }
+
+
+ /// <summary>
+ /// The ZLIB strategy to be used during compression.
+ /// </summary>
+ ///
+ public CompressionStrategy Strategy
+ {
+ get;
+ private set;
+ }
+
+ /// <summary>
+ /// The maximum number of buffer pairs to use.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// This property sets an upper limit on the number of memory buffer
+ /// pairs to create. The implementation of this stream allocates
+ /// multiple buffers to facilitate parallel compression. As each buffer
+ /// fills up, this stream uses <see
+ /// cref="System.Threading.ThreadPool.QueueUserWorkItem(WaitCallback)">
+ /// ThreadPool.QueueUserWorkItem()</see>
+ /// to compress those buffers in a background threadpool thread. After a
+ /// buffer is compressed, it is re-ordered and written to the output
+ /// stream.
+ /// </para>
+ ///
+ /// <para>
+ /// A higher number of buffer pairs enables a higher degree of
+ /// parallelism, which tends to increase the speed of compression on
+ /// multi-cpu computers. On the other hand, a higher number of buffer
+ /// pairs also implies a larger memory consumption, more active worker
+ /// threads, and a higher cpu utilization for any compression. This
+ /// property enables the application to limit its memory consumption and
+ /// CPU utilization behavior depending on requirements.
+ /// </para>
+ ///
+ /// <para>
+ /// For each compression "task" that occurs in parallel, there are 2
+ /// buffers allocated: one for input and one for output. This property
+ /// sets a limit for the number of pairs. The total amount of storage
+ /// space allocated for buffering will then be (N*S*2), where N is the
+ /// number of buffer pairs, S is the size of each buffer (<see
+ /// cref="BufferSize"/>). By default, DotNetZip allocates 4 buffer
+ /// pairs per CPU core, so if your machine has 4 cores, and you retain
+ /// the default buffer size of 128k, then the
+ /// ParallelDeflateOutputStream will use 4 * 4 * 2 * 128kb of buffer
+ /// memory in total, or 4mb, in blocks of 128kb. If you then set this
+ /// property to 8, then the number will be 8 * 2 * 128kb of buffer
+ /// memory, or 2mb.
+ /// </para>
+ ///
+ /// <para>
+ /// CPU utilization will also go up with additional buffers, because a
+ /// larger number of buffer pairs allows a larger number of background
+ /// threads to compress in parallel. If you find that parallel
+ /// compression is consuming too much memory or CPU, you can adjust this
+ /// value downward.
+ /// </para>
+ ///
+ /// <para>
+ /// The default value is 16. Different values may deliver better or
+ /// worse results, depending on your priorities and the dynamic
+ /// performance characteristics of your storage and compute resources.
+ /// </para>
+ ///
+ /// <para>
+ /// This property is not the number of buffer pairs to use; it is an
+ /// upper limit. An illustration: Suppose you have an application that
+ /// uses the default value of this property (which is 16), and it runs
+ /// on a machine with 2 CPU cores. In that case, DotNetZip will allocate
+ /// 4 buffer pairs per CPU core, for a total of 8 pairs. The upper
+ /// limit specified by this property has no effect.
+ /// </para>
+ ///
+ /// <para>
+ /// The application can set this value at any time, but it is effective
+ /// only before the first call to Write(), which is when the buffers are
+ /// allocated.
+ /// </para>
+ /// </remarks>
+ public int MaxBufferPairs
+ {
+ get
+ {
+ return _maxBufferPairs;
+ }
+ set
+ {
+ if (value < 4)
+ throw new ArgumentException("MaxBufferPairs",
+ "Value must be 4 or greater.");
+ _maxBufferPairs = value;
+ }
+ }
+
+ /// <summary>
+ /// The size of the buffers used by the compressor threads.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// The default buffer size is 128k. The application can set this value
+ /// at any time, but it is effective only before the first Write().
+ /// </para>
+ ///
+ /// <para>
+ /// Larger buffer sizes implies larger memory consumption but allows
+ /// more efficient compression. Using smaller buffer sizes consumes less
+ /// memory but may result in less effective compression. For example,
+ /// using the default buffer size of 128k, the compression delivered is
+ /// within 1% of the compression delivered by the single-threaded <see
+ /// cref="Ionic.Zlib.DeflateStream"/>. On the other hand, using a
+ /// BufferSize of 8k can result in a compressed data stream that is 5%
+ /// larger than that delivered by the single-threaded
+ /// <c>DeflateStream</c>. Excessively small buffer sizes can also cause
+ /// the speed of the ParallelDeflateOutputStream to drop, because of
+ /// larger thread scheduling overhead dealing with many many small
+ /// buffers.
+ /// </para>
+ ///
+ /// <para>
+ /// The total amount of storage space allocated for buffering will be
+ /// (N*S*2), where N is the number of buffer pairs, and S is the size of
+ /// each buffer (this property). There are 2 buffers used by the
+ /// compressor, one for input and one for output. By default, DotNetZip
+ /// allocates 4 buffer pairs per CPU core, so if your machine has 4
+ /// cores, then the number of buffer pairs used will be 16. If you
+ /// accept the default value of this property, 128k, then the
+ /// ParallelDeflateOutputStream will use 16 * 2 * 128kb of buffer memory
+ /// in total, or 4mb, in blocks of 128kb. If you set this property to
+ /// 64kb, then the number will be 16 * 2 * 64kb of buffer memory, or
+ /// 2mb.
+ /// </para>
+ ///
+ /// </remarks>
+ public int BufferSize
+ {
+ get { return _bufferSize;}
+ set
+ {
+ if (value < 1024)
+ throw new ArgumentOutOfRangeException("BufferSize",
+ "BufferSize must be greater than 1024 bytes");
+ _bufferSize = value;
+ }
+ }
+
+ /// <summary>
+ /// The CRC32 for the data that was written out, prior to compression.
+ /// </summary>
+ /// <remarks>
+ /// This value is meaningful only after a call to Close().
+ /// </remarks>
+ public int Crc32 { get { return _Crc32; } }
+
+
+ /// <summary>
+ /// The total number of uncompressed bytes processed by the ParallelDeflateOutputStream.
+ /// </summary>
+ /// <remarks>
+ /// This value is meaningful only after a call to Close().
+ /// </remarks>
+ public Int64 BytesProcessed { get { return _totalBytesProcessed; } }
+
+
+ private void _InitializePoolOfWorkItems()
+ {
+ _toWrite = new Queue<int>();
+ _toFill = new Queue<int>();
+ _pool = new System.Collections.Generic.List<WorkItem>();
+ int nTasks = BufferPairsPerCore * Environment.ProcessorCount;
+ nTasks = Math.Min(nTasks, _maxBufferPairs);
+ for(int i=0; i < nTasks; i++)
+ {
+ _pool.Add(new WorkItem(_bufferSize, _compressLevel, Strategy, i));
+ _toFill.Enqueue(i);
+ }
+
+ _newlyCompressedBlob = new AutoResetEvent(false);
+ _runningCrc = new Ionic.Crc.CRC32();
+ _currentlyFilling = -1;
+ _lastFilled = -1;
+ _lastWritten = -1;
+ _latestCompressed = -1;
+ }
+
+
+
+
+ /// <summary>
+ /// Write data to the stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// To use the ParallelDeflateOutputStream to compress data, create a
+ /// ParallelDeflateOutputStream with CompressionMode.Compress, passing a
+ /// writable output stream. Then call Write() on that
+ /// ParallelDeflateOutputStream, providing uncompressed data as input. The
+ /// data sent to the output stream will be the compressed form of the data
+ /// written.
+ /// </para>
+ ///
+ /// <para>
+ /// To decompress data, use the <see cref="Ionic.Zlib.DeflateStream"/> class.
+ /// </para>
+ ///
+ /// </remarks>
+ /// <param name="buffer">The buffer holding data to write to the stream.</param>
+ /// <param name="offset">the offset within that data array to find the first byte to write.</param>
+ /// <param name="count">the number of bytes to write.</param>
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ bool mustWait = false;
+
+ // This method does this:
+ // 0. handles any pending exceptions
+ // 1. write any buffers that are ready to be written,
+ // 2. fills a work buffer; when full, flip state to 'Filled',
+ // 3. if more data to be written, goto step 1
+
+ if (_isClosed)
+ throw new InvalidOperationException();
+
+ // dispense any exceptions that occurred on the BG threads
+ if (_pendingException != null)
+ {
+ _handlingException = true;
+ var pe = _pendingException;
+ _pendingException = null;
+ throw pe;
+ }
+
+ if (count == 0) return;
+
+ if (!_firstWriteDone)
+ {
+ // Want to do this on first Write, first session, and not in the
+ // constructor. We want to allow MaxBufferPairs to
+ // change after construction, but before first Write.
+ _InitializePoolOfWorkItems();
+ _firstWriteDone = true;
+ }
+
+
+ do
+ {
+ // may need to make buffers available
+ EmitPendingBuffers(false, mustWait);
+
+ mustWait = false;
+ // use current buffer, or get a new buffer to fill
+ int ix = -1;
+ if (_currentlyFilling >= 0)
+ {
+ ix = _currentlyFilling;
+ TraceOutput(TraceBits.WriteTake,
+ "Write notake wi({0}) lf({1})",
+ ix,
+ _lastFilled);
+ }
+ else
+ {
+ TraceOutput(TraceBits.WriteTake, "Write take?");
+ if (_toFill.Count == 0)
+ {
+ // no available buffers, so... need to emit
+ // compressed buffers.
+ mustWait = true;
+ continue;
+ }
+
+ ix = _toFill.Dequeue();
+ TraceOutput(TraceBits.WriteTake,
+ "Write take wi({0}) lf({1})",
+ ix,
+ _lastFilled);
+ ++_lastFilled; // TODO: consider rollover?
+ }
+
+ WorkItem workitem = _pool[ix];
+
+ int limit = ((workitem.buffer.Length - workitem.inputBytesAvailable) > count)
+ ? count
+ : (workitem.buffer.Length - workitem.inputBytesAvailable);
+
+ workitem.ordinal = _lastFilled;
+
+ TraceOutput(TraceBits.Write,
+ "Write lock wi({0}) ord({1}) iba({2})",
+ workitem.index,
+ workitem.ordinal,
+ workitem.inputBytesAvailable
+ );
+
+ // copy from the provided buffer to our workitem, starting at
+ // the tail end of whatever data we might have in there currently.
+ Buffer.BlockCopy(buffer,
+ offset,
+ workitem.buffer,
+ workitem.inputBytesAvailable,
+ limit);
+
+ count -= limit;
+ offset += limit;
+ workitem.inputBytesAvailable += limit;
+ if (workitem.inputBytesAvailable == workitem.buffer.Length)
+ {
+ // No need for interlocked.increment: the Write()
+ // method is documented as not multi-thread safe, so
+ // we can assume Write() calls come in from only one
+ // thread.
+ TraceOutput(TraceBits.Write,
+ "Write QUWI wi({0}) ord({1}) iba({2}) nf({3})",
+ workitem.index,
+ workitem.ordinal,
+ workitem.inputBytesAvailable );
+
+ if (!ThreadPool.QueueUserWorkItem( _DeflateOne, workitem ))
+ throw new Exception("Cannot enqueue workitem");
+
+ _currentlyFilling = -1; // will get a new buffer next time
+ }
+ else
+ _currentlyFilling = ix;
+
+ if (count > 0)
+ TraceOutput(TraceBits.WriteEnter, "Write more");
+ }
+ while (count > 0); // until no more to write
+
+ TraceOutput(TraceBits.WriteEnter, "Write exit");
+ return;
+ }
+
+
+
+ private void _FlushFinish()
+ {
+ // After writing a series of compressed buffers, each one closed
+ // with Flush.Sync, we now write the final one as Flush.Finish,
+ // and then stop.
+ byte[] buffer = new byte[128];
+ var compressor = new ZlibCodec();
+ int rc = compressor.InitializeDeflate(_compressLevel, false);
+ compressor.InputBuffer = null;
+ compressor.NextIn = 0;
+ compressor.AvailableBytesIn = 0;
+ compressor.OutputBuffer = buffer;
+ compressor.NextOut = 0;
+ compressor.AvailableBytesOut = buffer.Length;
+ rc = compressor.Deflate(FlushType.Finish);
+
+ if (rc != ZlibConstants.Z_STREAM_END && rc != ZlibConstants.Z_OK)
+ throw new Exception("deflating: " + compressor.Message);
+
+ if (buffer.Length - compressor.AvailableBytesOut > 0)
+ {
+ TraceOutput(TraceBits.EmitBegin,
+ "Emit begin flush bytes({0})",
+ buffer.Length - compressor.AvailableBytesOut);
+
+ _outStream.Write(buffer, 0, buffer.Length - compressor.AvailableBytesOut);
+
+ TraceOutput(TraceBits.EmitDone,
+ "Emit done flush");
+ }
+
+ compressor.EndDeflate();
+
+ _Crc32 = _runningCrc.Crc32Result;
+ }
+
+
+ private void _Flush(bool lastInput)
+ {
+ if (_isClosed)
+ throw new InvalidOperationException();
+
+ if (emitting) return;
+
+ // compress any partial buffer
+ if (_currentlyFilling >= 0)
+ {
+ WorkItem workitem = _pool[_currentlyFilling];
+ _DeflateOne(workitem);
+ _currentlyFilling = -1; // get a new buffer next Write()
+ }
+
+ if (lastInput)
+ {
+ EmitPendingBuffers(true, false);
+ _FlushFinish();
+ }
+ else
+ {
+ EmitPendingBuffers(false, false);
+ }
+ }
+
+
+
+ /// <summary>
+ /// Flush the stream.
+ /// </summary>
+ public override void Flush()
+ {
+ if (_pendingException != null)
+ {
+ _handlingException = true;
+ var pe = _pendingException;
+ _pendingException = null;
+ throw pe;
+ }
+ if (_handlingException)
+ return;
+
+ _Flush(false);
+ }
+
+
+ /// <summary>
+ /// Close the stream.
+ /// </summary>
+ /// <remarks>
+ /// You must call Close on the stream to guarantee that all of the data written in has
+ /// been compressed, and the compressed data has been written out.
+ /// </remarks>
+ public override void Close()
+ {
+ TraceOutput(TraceBits.Session, "Close {0:X8}", this.GetHashCode());
+
+ if (_pendingException != null)
+ {
+ _handlingException = true;
+ var pe = _pendingException;
+ _pendingException = null;
+ throw pe;
+ }
+
+ if (_handlingException)
+ return;
+
+ if (_isClosed) return;
+
+ _Flush(true);
+
+ if (!_leaveOpen)
+ _outStream.Close();
+
+ _isClosed= true;
+ }
+
+
+
+ // workitem 10030 - implement a new Dispose method
+
+ /// <summary>Dispose the object</summary>
+ /// <remarks>
+ /// <para>
+ /// Because ParallelDeflateOutputStream is IDisposable, the
+ /// application must call this method when finished using the instance.
+ /// </para>
+ /// <para>
+ /// This method is generally called implicitly upon exit from
+ /// a <c>using</c> scope in C# (<c>Using</c> in VB).
+ /// </para>
+ /// </remarks>
+ new public void Dispose()
+ {
+ TraceOutput(TraceBits.Lifecycle, "Dispose {0:X8}", this.GetHashCode());
+ Close();
+ _pool = null;
+ Dispose(true);
+ }
+
+
+
+ /// <summary>The Dispose method</summary>
+ /// <param name="disposing">
+ /// indicates whether the Dispose method was invoked by user code.
+ /// </param>
+ protected override void Dispose(bool disposing)
+ {
+ base.Dispose(disposing);
+ }
+
+
+ /// <summary>
+ /// Resets the stream for use with another stream.
+ /// </summary>
+ /// <remarks>
+ /// Because the ParallelDeflateOutputStream is expensive to create, it
+ /// has been designed so that it can be recycled and re-used. You have
+ /// to call Close() on the stream first, then you can call Reset() on
+ /// it, to use it again on another stream.
+ /// </remarks>
+ ///
+ /// <param name="stream">
+ /// The new output stream for this era.
+ /// </param>
+ ///
+ /// <example>
+ /// <code>
+ /// ParallelDeflateOutputStream deflater = null;
+ /// foreach (var inputFile in listOfFiles)
+ /// {
+ /// string outputFile = inputFile + ".compressed";
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(inputFile))
+ /// {
+ /// using (var outStream = System.IO.File.Create(outputFile))
+ /// {
+ /// if (deflater == null)
+ /// deflater = new ParallelDeflateOutputStream(outStream,
+ /// CompressionLevel.Best,
+ /// CompressionStrategy.Default,
+ /// true);
+ /// deflater.Reset(outStream);
+ ///
+ /// while ((n= input.Read(buffer, 0, buffer.Length)) != 0)
+ /// {
+ /// deflater.Write(buffer, 0, n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ /// </example>
+ public void Reset(Stream stream)
+ {
+ TraceOutput(TraceBits.Session, "-------------------------------------------------------");
+ TraceOutput(TraceBits.Session, "Reset {0:X8} firstDone({1})", this.GetHashCode(), _firstWriteDone);
+
+ if (!_firstWriteDone) return;
+
+ // reset all status
+ _toWrite.Clear();
+ _toFill.Clear();
+ foreach (var workitem in _pool)
+ {
+ _toFill.Enqueue(workitem.index);
+ workitem.ordinal = -1;
+ }
+
+ _firstWriteDone = false;
+ _totalBytesProcessed = 0L;
+ _runningCrc = new Ionic.Crc.CRC32();
+ _isClosed= false;
+ _currentlyFilling = -1;
+ _lastFilled = -1;
+ _lastWritten = -1;
+ _latestCompressed = -1;
+ _outStream = stream;
+ }
+
+
+
+
+ private void EmitPendingBuffers(bool doAll, bool mustWait)
+ {
+ // When combining parallel deflation with a ZipSegmentedStream, it's
+ // possible for the ZSS to throw from within this method. In that
+ // case, Close/Dispose will be called on this stream, if this stream
+ // is employed within a using or try/finally pair as required. But
+ // this stream is unaware of the pending exception, so the Close()
+ // method invokes this method AGAIN. This can lead to a deadlock.
+ // Therefore, failfast if re-entering.
+
+ if (emitting) return;
+ emitting = true;
+ if (doAll || mustWait)
+ _newlyCompressedBlob.WaitOne();
+
+ do
+ {
+ int firstSkip = -1;
+ int millisecondsToWait = doAll ? 200 : (mustWait ? -1 : 0);
+ int nextToWrite = -1;
+
+ do
+ {
+ if (Monitor.TryEnter(_toWrite, millisecondsToWait))
+ {
+ nextToWrite = -1;
+ try
+ {
+ if (_toWrite.Count > 0)
+ nextToWrite = _toWrite.Dequeue();
+ }
+ finally
+ {
+ Monitor.Exit(_toWrite);
+ }
+
+ if (nextToWrite >= 0)
+ {
+ WorkItem workitem = _pool[nextToWrite];
+ if (workitem.ordinal != _lastWritten + 1)
+ {
+ // out of order. requeue and try again.
+ TraceOutput(TraceBits.EmitSkip,
+ "Emit skip wi({0}) ord({1}) lw({2}) fs({3})",
+ workitem.index,
+ workitem.ordinal,
+ _lastWritten,
+ firstSkip);
+
+ lock(_toWrite)
+ {
+ _toWrite.Enqueue(nextToWrite);
+ }
+
+ if (firstSkip == nextToWrite)
+ {
+ // We went around the list once.
+ // None of the items in the list is the one we want.
+ // Now wait for a compressor to signal again.
+ _newlyCompressedBlob.WaitOne();
+ firstSkip = -1;
+ }
+ else if (firstSkip == -1)
+ firstSkip = nextToWrite;
+
+ continue;
+ }
+
+ firstSkip = -1;
+
+ TraceOutput(TraceBits.EmitBegin,
+ "Emit begin wi({0}) ord({1}) cba({2})",
+ workitem.index,
+ workitem.ordinal,
+ workitem.compressedBytesAvailable);
+
+ _outStream.Write(workitem.compressed, 0, workitem.compressedBytesAvailable);
+ _runningCrc.Combine(workitem.crc, workitem.inputBytesAvailable);
+ _totalBytesProcessed += workitem.inputBytesAvailable;
+ workitem.inputBytesAvailable = 0;
+
+ TraceOutput(TraceBits.EmitDone,
+ "Emit done wi({0}) ord({1}) cba({2}) mtw({3})",
+ workitem.index,
+ workitem.ordinal,
+ workitem.compressedBytesAvailable,
+ millisecondsToWait);
+
+ _lastWritten = workitem.ordinal;
+ _toFill.Enqueue(workitem.index);
+
+ // don't wait next time through
+ if (millisecondsToWait == -1) millisecondsToWait = 0;
+ }
+ }
+ else
+ nextToWrite = -1;
+
+ } while (nextToWrite >= 0);
+
+ } while (doAll && (_lastWritten != _latestCompressed));
+
+ emitting = false;
+ }
+
+
+
+#if OLD
+ private void _PerpetualWriterMethod(object state)
+ {
+ TraceOutput(TraceBits.WriterThread, "_PerpetualWriterMethod START");
+
+ try
+ {
+ do
+ {
+ // wait for the next session
+ TraceOutput(TraceBits.Synch | TraceBits.WriterThread, "Synch _sessionReset.WaitOne(begin) PWM");
+ _sessionReset.WaitOne();
+ TraceOutput(TraceBits.Synch | TraceBits.WriterThread, "Synch _sessionReset.WaitOne(done) PWM");
+
+ if (_isDisposed) break;
+
+ TraceOutput(TraceBits.Synch | TraceBits.WriterThread, "Synch _sessionReset.Reset() PWM");
+ _sessionReset.Reset();
+
+ // repeatedly write buffers as they become ready
+ WorkItem workitem = null;
+ Ionic.Zlib.CRC32 c= new Ionic.Zlib.CRC32();
+ do
+ {
+ workitem = _pool[_nextToWrite % _pc];
+ lock(workitem)
+ {
+ if (_noMoreInputForThisSegment)
+ TraceOutput(TraceBits.Write,
+ "Write drain wi({0}) stat({1}) canuse({2}) cba({3})",
+ workitem.index,
+ workitem.status,
+ (workitem.status == (int)WorkItem.Status.Compressed),
+ workitem.compressedBytesAvailable);
+
+ do
+ {
+ if (workitem.status == (int)WorkItem.Status.Compressed)
+ {
+ TraceOutput(TraceBits.WriteBegin,
+ "Write begin wi({0}) stat({1}) cba({2})",
+ workitem.index,
+ workitem.status,
+ workitem.compressedBytesAvailable);
+
+ workitem.status = (int)WorkItem.Status.Writing;
+ _outStream.Write(workitem.compressed, 0, workitem.compressedBytesAvailable);
+ c.Combine(workitem.crc, workitem.inputBytesAvailable);
+ _totalBytesProcessed += workitem.inputBytesAvailable;
+ _nextToWrite++;
+ workitem.inputBytesAvailable= 0;
+ workitem.status = (int)WorkItem.Status.Done;
+
+ TraceOutput(TraceBits.WriteDone,
+ "Write done wi({0}) stat({1}) cba({2})",
+ workitem.index,
+ workitem.status,
+ workitem.compressedBytesAvailable);
+
+
+ Monitor.Pulse(workitem);
+ break;
+ }
+ else
+ {
+ int wcycles = 0;
+ // I've locked a workitem I cannot use.
+ // Therefore, wake someone else up, and then release the lock.
+ while (workitem.status != (int)WorkItem.Status.Compressed)
+ {
+ TraceOutput(TraceBits.WriteWait,
+ "Write waiting wi({0}) stat({1}) nw({2}) nf({3}) nomore({4})",
+ workitem.index,
+ workitem.status,
+ _nextToWrite, _nextToFill,
+ _noMoreInputForThisSegment );
+
+ if (_noMoreInputForThisSegment && _nextToWrite == _nextToFill)
+ break;
+
+ wcycles++;
+
+ // wake up someone else
+ Monitor.Pulse(workitem);
+ // release and wait
+ Monitor.Wait(workitem);
+
+ if (workitem.status == (int)WorkItem.Status.Compressed)
+ TraceOutput(TraceBits.WriteWait,
+ "Write A-OK wi({0}) stat({1}) iba({2}) cba({3}) cyc({4})",
+ workitem.index,
+ workitem.status,
+ workitem.inputBytesAvailable,
+ workitem.compressedBytesAvailable,
+ wcycles);
+ }
+
+ if (_noMoreInputForThisSegment && _nextToWrite == _nextToFill)
+ break;
+
+ }
+ }
+ while (true);
+ }
+
+ if (_noMoreInputForThisSegment)
+ TraceOutput(TraceBits.Write,
+ "Write nomore nw({0}) nf({1}) break({2})",
+ _nextToWrite, _nextToFill, (_nextToWrite == _nextToFill));
+
+ if (_noMoreInputForThisSegment && _nextToWrite == _nextToFill)
+ break;
+
+ } while (true);
+
+
+ // Finish:
+ // After writing a series of buffers, closing each one with
+ // Flush.Sync, we now write the final one as Flush.Finish, and
+ // then stop.
+ byte[] buffer = new byte[128];
+ ZlibCodec compressor = new ZlibCodec();
+ int rc = compressor.InitializeDeflate(_compressLevel, false);
+ compressor.InputBuffer = null;
+ compressor.NextIn = 0;
+ compressor.AvailableBytesIn = 0;
+ compressor.OutputBuffer = buffer;
+ compressor.NextOut = 0;
+ compressor.AvailableBytesOut = buffer.Length;
+ rc = compressor.Deflate(FlushType.Finish);
+
+ if (rc != ZlibConstants.Z_STREAM_END && rc != ZlibConstants.Z_OK)
+ throw new Exception("deflating: " + compressor.Message);
+
+ if (buffer.Length - compressor.AvailableBytesOut > 0)
+ {
+ TraceOutput(TraceBits.WriteBegin,
+ "Write begin flush bytes({0})",
+ buffer.Length - compressor.AvailableBytesOut);
+
+ _outStream.Write(buffer, 0, buffer.Length - compressor.AvailableBytesOut);
+
+ TraceOutput(TraceBits.WriteBegin,
+ "Write done flush");
+ }
+
+ compressor.EndDeflate();
+
+ _Crc32 = c.Crc32Result;
+
+ // signal that writing is complete:
+ TraceOutput(TraceBits.Synch, "Synch _writingDone.Set() PWM");
+ _writingDone.Set();
+ }
+ while (true);
+ }
+ catch (System.Exception exc1)
+ {
+ lock(_eLock)
+ {
+ // expose the exception to the main thread
+ if (_pendingException!=null)
+ _pendingException = exc1;
+ }
+ }
+
+ TraceOutput(TraceBits.WriterThread, "_PerpetualWriterMethod FINIS");
+ }
+#endif
+
+
+
+
+ private void _DeflateOne(Object wi)
+ {
+ // compress one buffer
+ WorkItem workitem = (WorkItem) wi;
+ try
+ {
+ int myItem = workitem.index;
+ Ionic.Crc.CRC32 crc = new Ionic.Crc.CRC32();
+
+ // calc CRC on the buffer
+ crc.SlurpBlock(workitem.buffer, 0, workitem.inputBytesAvailable);
+
+ // deflate it
+ DeflateOneSegment(workitem);
+
+ // update status
+ workitem.crc = crc.Crc32Result;
+ TraceOutput(TraceBits.Compress,
+ "Compress wi({0}) ord({1}) len({2})",
+ workitem.index,
+ workitem.ordinal,
+ workitem.compressedBytesAvailable
+ );
+
+ lock(_latestLock)
+ {
+ if (workitem.ordinal > _latestCompressed)
+ _latestCompressed = workitem.ordinal;
+ }
+ lock (_toWrite)
+ {
+ _toWrite.Enqueue(workitem.index);
+ }
+ _newlyCompressedBlob.Set();
+ }
+ catch (System.Exception exc1)
+ {
+ lock(_eLock)
+ {
+ // expose the exception to the main thread
+ if (_pendingException!=null)
+ _pendingException = exc1;
+ }
+ }
+ }
+
+
+
+
+ private bool DeflateOneSegment(WorkItem workitem)
+ {
+ ZlibCodec compressor = workitem.compressor;
+ int rc= 0;
+ compressor.ResetDeflate();
+ compressor.NextIn = 0;
+
+ compressor.AvailableBytesIn = workitem.inputBytesAvailable;
+
+ // step 1: deflate the buffer
+ compressor.NextOut = 0;
+ compressor.AvailableBytesOut = workitem.compressed.Length;
+ do
+ {
+ compressor.Deflate(FlushType.None);
+ }
+ while (compressor.AvailableBytesIn > 0 || compressor.AvailableBytesOut == 0);
+
+ // step 2: flush (sync)
+ rc = compressor.Deflate(FlushType.Sync);
+
+ workitem.compressedBytesAvailable= (int) compressor.TotalBytesOut;
+ return true;
+ }
+
+
+ [System.Diagnostics.ConditionalAttribute("Trace")]
+ private void TraceOutput(TraceBits bits, string format, params object[] varParams)
+ {
+ if ((bits & _DesiredTrace) != 0)
+ {
+ lock(_outputLock)
+ {
+ int tid = Thread.CurrentThread.GetHashCode();
+#if !SILVERLIGHT
+ Console.ForegroundColor = (ConsoleColor) (tid % 8 + 8);
+#endif
+ Console.Write("{0:000} PDOS ", tid);
+ Console.WriteLine(format, varParams);
+#if !SILVERLIGHT
+ Console.ResetColor();
+#endif
+ }
+ }
+ }
+
+
+ // used only when Trace is defined
+ [Flags]
+ enum TraceBits : uint
+ {
+ None = 0,
+ NotUsed1 = 1,
+ EmitLock = 2,
+ EmitEnter = 4, // enter _EmitPending
+ EmitBegin = 8, // begin to write out
+ EmitDone = 16, // done writing out
+ EmitSkip = 32, // writer skipping a workitem
+ EmitAll = 58, // All Emit flags
+ Flush = 64,
+ Lifecycle = 128, // constructor/disposer
+ Session = 256, // Close/Reset
+ Synch = 512, // thread synchronization
+ Instance = 1024, // instance settings
+ Compress = 2048, // compress task
+ Write = 4096, // filling buffers, when caller invokes Write()
+ WriteEnter = 8192, // upon entry to Write()
+ WriteTake = 16384, // on _toFill.Take()
+ All = 0xffffffff,
+ }
+
+
+
+ /// <summary>
+ /// Indicates whether the stream supports Seek operations.
+ /// </summary>
+ /// <remarks>
+ /// Always returns false.
+ /// </remarks>
+ public override bool CanSeek
+ {
+ get { return false; }
+ }
+
+
+ /// <summary>
+ /// Indicates whether the stream supports Read operations.
+ /// </summary>
+ /// <remarks>
+ /// Always returns false.
+ /// </remarks>
+ public override bool CanRead
+ {
+ get {return false;}
+ }
+
+ /// <summary>
+ /// Indicates whether the stream supports Write operations.
+ /// </summary>
+ /// <remarks>
+ /// Returns true if the provided stream is writable.
+ /// </remarks>
+ public override bool CanWrite
+ {
+ get { return _outStream.CanWrite; }
+ }
+
+ /// <summary>
+ /// Reading this property always throws a NotSupportedException.
+ /// </summary>
+ public override long Length
+ {
+ get { throw new NotSupportedException(); }
+ }
+
+ /// <summary>
+ /// Returns the current position of the output stream.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// Because the output gets written by a background thread,
+ /// the value may change asynchronously. Setting this
+ /// property always throws a NotSupportedException.
+ /// </para>
+ /// </remarks>
+ public override long Position
+ {
+ get { return _outStream.Position; }
+ set { throw new NotSupportedException(); }
+ }
+
+ /// <summary>
+ /// This method always throws a NotSupportedException.
+ /// </summary>
+ /// <param name="buffer">
+ /// The buffer into which data would be read, IF THIS METHOD
+ /// ACTUALLY DID ANYTHING.
+ /// </param>
+ /// <param name="offset">
+ /// The offset within that data array at which to insert the
+ /// data that is read, IF THIS METHOD ACTUALLY DID
+ /// ANYTHING.
+ /// </param>
+ /// <param name="count">
+ /// The number of bytes to write, IF THIS METHOD ACTUALLY DID
+ /// ANYTHING.
+ /// </param>
+ /// <returns>nothing.</returns>
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ throw new NotSupportedException();
+ }
+
+ /// <summary>
+ /// This method always throws a NotSupportedException.
+ /// </summary>
+ /// <param name="offset">
+ /// The offset to seek to....
+ /// IF THIS METHOD ACTUALLY DID ANYTHING.
+ /// </param>
+ /// <param name="origin">
+ /// The reference specifying how to apply the offset.... IF
+ /// THIS METHOD ACTUALLY DID ANYTHING.
+ /// </param>
+ /// <returns>nothing. It always throws.</returns>
+ public override long Seek(long offset, System.IO.SeekOrigin origin)
+ {
+ throw new NotSupportedException();
+ }
+
+ /// <summary>
+ /// This method always throws a NotSupportedException.
+ /// </summary>
+ /// <param name="value">
+ /// The new value for the stream length.... IF
+ /// THIS METHOD ACTUALLY DID ANYTHING.
+ /// </param>
+ public override void SetLength(long value)
+ {
+ throw new NotSupportedException();
+ }
+
+ }
+
+}
+
+
--- /dev/null
+// Tree.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2009-October-28 13:29:50>
+//
+// ------------------------------------------------------------------
+//
+// This module defines classes for zlib compression and
+// decompression. This code is derived from the jzlib implementation of
+// zlib. In keeping with the license for jzlib, the copyright to that
+// code is below.
+//
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in
+// the documentation and/or other materials provided with the distribution.
+//
+// 3. The names of the authors may not be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
+// INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
+// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// -----------------------------------------------------------------------
+//
+// This program is based on zlib-1.1.3; credit to authors
+// Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
+// and contributors of zlib.
+//
+// -----------------------------------------------------------------------
+
+
+using System;
+
+namespace Ionic.Zlib
+{
+ sealed class Tree
+ {
+ private static readonly int HEAP_SIZE = (2 * InternalConstants.L_CODES + 1);
+
+ // extra bits for each length code
+ internal static readonly int[] ExtraLengthBits = new int[]
+ {
+ 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
+ 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0
+ };
+
+ // extra bits for each distance code
+ internal static readonly int[] ExtraDistanceBits = new int[]
+ {
+ 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
+ 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13
+ };
+
+ // extra bits for each bit length code
+ internal static readonly int[] extra_blbits = new int[]{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 3, 7};
+
+ internal static readonly sbyte[] bl_order = new sbyte[]{16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
+
+
+ // The lengths of the bit length codes are sent in order of decreasing
+ // probability, to avoid transmitting the lengths for unused bit
+ // length codes.
+
+ internal const int Buf_size = 8 * 2;
+
+ // see definition of array dist_code below
+ //internal const int DIST_CODE_LEN = 512;
+
+ private static readonly sbyte[] _dist_code = new sbyte[]
+ {
+ 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7,
+ 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9,
+ 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
+ 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+ 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
+ 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
+ 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
+ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+ 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+ 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+ 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+ 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+ 0, 0, 16, 17, 18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21,
+ 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,
+ 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+ 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
+ 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+ 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
+ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
+ 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+ 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+ 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+ 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+ 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
+ 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
+ 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
+ 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
+ };
+
+ internal static readonly sbyte[] LengthCode = new sbyte[]
+ {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11,
+ 12, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15,
+ 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17,
+ 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 19, 19, 19,
+ 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+ 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
+ 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22,
+ 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
+ 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+ 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+ 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
+ 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
+ 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+ 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
+ 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28
+ };
+
+
+ internal static readonly int[] LengthBase = new int[]
+ {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28,
+ 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 0
+ };
+
+
+ internal static readonly int[] DistanceBase = new int[]
+ {
+ 0, 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192,
+ 256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576
+ };
+
+
+ /// <summary>
+ /// Map from a distance to a distance code.
+ /// </summary>
+ /// <remarks>
+ /// No side effects. _dist_code[256] and _dist_code[257] are never used.
+ /// </remarks>
+ internal static int DistanceCode(int dist)
+ {
+ return (dist < 256)
+ ? _dist_code[dist]
+ : _dist_code[256 + SharedUtils.URShift(dist, 7)];
+ }
+
+ internal short[] dyn_tree; // the dynamic tree
+ internal int max_code; // largest code with non zero frequency
+ internal StaticTree staticTree; // the corresponding static tree
+
+ // Compute the optimal bit lengths for a tree and update the total bit length
+ // for the current block.
+ // IN assertion: the fields freq and dad are set, heap[heap_max] and
+ // above are the tree nodes sorted by increasing frequency.
+ // OUT assertions: the field len is set to the optimal bit length, the
+ // array bl_count contains the frequencies for each bit length.
+ // The length opt_len is updated; static_len is also updated if stree is
+ // not null.
+ internal void gen_bitlen(DeflateManager s)
+ {
+ short[] tree = dyn_tree;
+ short[] stree = staticTree.treeCodes;
+ int[] extra = staticTree.extraBits;
+ int base_Renamed = staticTree.extraBase;
+ int max_length = staticTree.maxLength;
+ int h; // heap index
+ int n, m; // iterate over the tree elements
+ int bits; // bit length
+ int xbits; // extra bits
+ short f; // frequency
+ int overflow = 0; // number of elements with bit length too large
+
+ for (bits = 0; bits <= InternalConstants.MAX_BITS; bits++)
+ s.bl_count[bits] = 0;
+
+ // In a first pass, compute the optimal bit lengths (which may
+ // overflow in the case of the bit length tree).
+ tree[s.heap[s.heap_max] * 2 + 1] = 0; // root of the heap
+
+ for (h = s.heap_max + 1; h < HEAP_SIZE; h++)
+ {
+ n = s.heap[h];
+ bits = tree[tree[n * 2 + 1] * 2 + 1] + 1;
+ if (bits > max_length)
+ {
+ bits = max_length; overflow++;
+ }
+ tree[n * 2 + 1] = (short) bits;
+ // We overwrite tree[n*2+1] which is no longer needed
+
+ if (n > max_code)
+ continue; // not a leaf node
+
+ s.bl_count[bits]++;
+ xbits = 0;
+ if (n >= base_Renamed)
+ xbits = extra[n - base_Renamed];
+ f = tree[n * 2];
+ s.opt_len += f * (bits + xbits);
+ if (stree != null)
+ s.static_len += f * (stree[n * 2 + 1] + xbits);
+ }
+ if (overflow == 0)
+ return ;
+
+ // This happens for example on obj2 and pic of the Calgary corpus
+ // Find the first bit length which could increase:
+ do
+ {
+ bits = max_length - 1;
+ while (s.bl_count[bits] == 0)
+ bits--;
+ s.bl_count[bits]--; // move one leaf down the tree
+ s.bl_count[bits + 1] = (short) (s.bl_count[bits + 1] + 2); // move one overflow item as its brother
+ s.bl_count[max_length]--;
+ // The brother of the overflow item also moves one step up,
+ // but this does not affect bl_count[max_length]
+ overflow -= 2;
+ }
+ while (overflow > 0);
+
+ for (bits = max_length; bits != 0; bits--)
+ {
+ n = s.bl_count[bits];
+ while (n != 0)
+ {
+ m = s.heap[--h];
+ if (m > max_code)
+ continue;
+ if (tree[m * 2 + 1] != bits)
+ {
+ s.opt_len = (int) (s.opt_len + ((long) bits - (long) tree[m * 2 + 1]) * (long) tree[m * 2]);
+ tree[m * 2 + 1] = (short) bits;
+ }
+ n--;
+ }
+ }
+ }
+
+ // Construct one Huffman tree and assigns the code bit strings and lengths.
+ // Update the total bit length for the current block.
+ // IN assertion: the field freq is set for all tree elements.
+ // OUT assertions: the fields len and code are set to the optimal bit length
+ // and corresponding code. The length opt_len is updated; static_len is
+ // also updated if stree is not null. The field max_code is set.
+ internal void build_tree(DeflateManager s)
+ {
+ short[] tree = dyn_tree;
+ short[] stree = staticTree.treeCodes;
+ int elems = staticTree.elems;
+ int n, m; // iterate over heap elements
+ int max_code = -1; // largest code with non zero frequency
+ int node; // new node being created
+
+ // Construct the initial heap, with least frequent element in
+ // heap[1]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
+ // heap[0] is not used.
+ s.heap_len = 0;
+ s.heap_max = HEAP_SIZE;
+
+ for (n = 0; n < elems; n++)
+ {
+ if (tree[n * 2] != 0)
+ {
+ s.heap[++s.heap_len] = max_code = n;
+ s.depth[n] = 0;
+ }
+ else
+ {
+ tree[n * 2 + 1] = 0;
+ }
+ }
+
+ // The pkzip format requires that at least one distance code exists,
+ // and that at least one bit should be sent even if there is only one
+ // possible code. So to avoid special checks later on we force at least
+ // two codes of non zero frequency.
+ while (s.heap_len < 2)
+ {
+ node = s.heap[++s.heap_len] = (max_code < 2?++max_code:0);
+ tree[node * 2] = 1;
+ s.depth[node] = 0;
+ s.opt_len--;
+ if (stree != null)
+ s.static_len -= stree[node * 2 + 1];
+ // node is 0 or 1 so it does not have extra bits
+ }
+ this.max_code = max_code;
+
+ // The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
+ // establish sub-heaps of increasing lengths:
+
+ for (n = s.heap_len / 2; n >= 1; n--)
+ s.pqdownheap(tree, n);
+
+ // Construct the Huffman tree by repeatedly combining the least two
+ // frequent nodes.
+
+ node = elems; // next internal node of the tree
+ do
+ {
+ // n = node of least frequency
+ n = s.heap[1];
+ s.heap[1] = s.heap[s.heap_len--];
+ s.pqdownheap(tree, 1);
+ m = s.heap[1]; // m = node of next least frequency
+
+ s.heap[--s.heap_max] = n; // keep the nodes sorted by frequency
+ s.heap[--s.heap_max] = m;
+
+ // Create a new node father of n and m
+ tree[node * 2] = unchecked((short) (tree[n * 2] + tree[m * 2]));
+ s.depth[node] = (sbyte) (System.Math.Max((byte) s.depth[n], (byte) s.depth[m]) + 1);
+ tree[n * 2 + 1] = tree[m * 2 + 1] = (short) node;
+
+ // and insert the new node in the heap
+ s.heap[1] = node++;
+ s.pqdownheap(tree, 1);
+ }
+ while (s.heap_len >= 2);
+
+ s.heap[--s.heap_max] = s.heap[1];
+
+ // At this point, the fields freq and dad are set. We can now
+ // generate the bit lengths.
+
+ gen_bitlen(s);
+
+ // The field len is now set, we can generate the bit codes
+ gen_codes(tree, max_code, s.bl_count);
+ }
+
+ // Generate the codes for a given tree and bit counts (which need not be
+ // optimal).
+ // IN assertion: the array bl_count contains the bit length statistics for
+ // the given tree and the field len is set for all tree elements.
+ // OUT assertion: the field code is set for all tree elements of non
+ // zero code length.
+ internal static void gen_codes(short[] tree, int max_code, short[] bl_count)
+ {
+ short[] next_code = new short[InternalConstants.MAX_BITS + 1]; // next code value for each bit length
+ short code = 0; // running code value
+ int bits; // bit index
+ int n; // code index
+
+ // The distribution counts are first used to generate the code values
+ // without bit reversal.
+ for (bits = 1; bits <= InternalConstants.MAX_BITS; bits++)
+ unchecked {
+ next_code[bits] = code = (short) ((code + bl_count[bits - 1]) << 1);
+ }
+
+ // Check that the bit counts in bl_count are consistent. The last code
+ // must be all ones.
+ //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
+ // "inconsistent bit counts");
+ //Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
+
+ for (n = 0; n <= max_code; n++)
+ {
+ int len = tree[n * 2 + 1];
+ if (len == 0)
+ continue;
+ // Now reverse the bits
+ tree[n * 2] = unchecked((short) (bi_reverse(next_code[len]++, len)));
+ }
+ }
+
+ // Reverse the first len bits of a code, using straightforward code (a faster
+ // method would use a table)
+ // IN assertion: 1 <= len <= 15
+ internal static int bi_reverse(int code, int len)
+ {
+ int res = 0;
+ do
+ {
+ res |= code & 1;
+ code >>= 1; //SharedUtils.URShift(code, 1);
+ res <<= 1;
+ }
+ while (--len > 0);
+ return res >> 1;
+ }
+ }
+}
\ No newline at end of file
--- /dev/null
+// Zlib.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009-2011 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// Last Saved: <2011-August-03 19:52:28>
+//
+// ------------------------------------------------------------------
+//
+// This module defines classes for ZLIB compression and
+// decompression. This code is derived from the jzlib implementation of
+// zlib, but significantly modified. The object model is not the same,
+// and many of the behaviors are new or different. Nonetheless, in
+// keeping with the license for jzlib, the copyright to that code is
+// included below.
+//
+// ------------------------------------------------------------------
+//
+// The following notice applies to jzlib:
+//
+// Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in
+// the documentation and/or other materials provided with the distribution.
+//
+// 3. The names of the authors may not be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
+// INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
+// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// -----------------------------------------------------------------------
+//
+// jzlib is based on zlib-1.1.3.
+//
+// The following notice applies to zlib:
+//
+// -----------------------------------------------------------------------
+//
+// Copyright (C) 1995-2004 Jean-loup Gailly and Mark Adler
+//
+// The ZLIB software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+// claim that you wrote the original software. If you use this software
+// in a product, an acknowledgment in the product documentation would be
+// appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+// misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+//
+// Jean-loup Gailly jloup@gzip.org
+// Mark Adler madler@alumni.caltech.edu
+//
+// -----------------------------------------------------------------------
+
+
+
+using System;
+using Interop=System.Runtime.InteropServices;
+
+namespace Ionic.Zlib
+{
+
+ /// <summary>
+ /// Describes how to flush the current deflate operation.
+ /// </summary>
+ /// <remarks>
+ /// The different FlushType values are useful when using a Deflate in a streaming application.
+ /// </remarks>
+ internal enum FlushType
+ {
+ /// <summary>No flush at all.</summary>
+ None = 0,
+
+ /// <summary>Closes the current block, but doesn't flush it to
+ /// the output. Used internally only in hypothetical
+ /// scenarios. This was supposed to be removed by Zlib, but it is
+ /// still in use in some edge cases.
+ /// </summary>
+ Partial,
+
+ /// <summary>
+ /// Use this during compression to specify that all pending output should be
+ /// flushed to the output buffer and the output should be aligned on a byte
+ /// boundary. You might use this in a streaming communication scenario, so that
+ /// the decompressor can get all input data available so far. When using this
+ /// with a ZlibCodec, <c>AvailableBytesIn</c> will be zero after the call if
+ /// enough output space has been provided before the call. Flushing will
+ /// degrade compression and so it should be used only when necessary.
+ /// </summary>
+ Sync,
+
+ /// <summary>
+ /// Use this during compression to specify that all output should be flushed, as
+ /// with <c>FlushType.Sync</c>, but also, the compression state should be reset
+ /// so that decompression can restart from this point if previous compressed
+ /// data has been damaged or if random access is desired. Using
+ /// <c>FlushType.Full</c> too often can significantly degrade the compression.
+ /// </summary>
+ Full,
+
+ /// <summary>Signals the end of the compression/decompression stream.</summary>
+ Finish,
+ }
+
+
+ /// <summary>
+ /// The compression level to be used when using a DeflateStream or ZlibStream with CompressionMode.Compress.
+ /// </summary>
+ internal enum CompressionLevel
+ {
+ /// <summary>
+ /// None means that the data will be simply stored, with no change at all.
+ /// If you are producing ZIPs for use on Mac OSX, be aware that archives produced with CompressionLevel.None
+ /// cannot be opened with the default zip reader. Use a different CompressionLevel.
+ /// </summary>
+ None= 0,
+ /// <summary>
+ /// Same as None.
+ /// </summary>
+ Level0 = 0,
+
+ /// <summary>
+ /// The fastest but least effective compression.
+ /// </summary>
+ BestSpeed = 1,
+
+ /// <summary>
+ /// A synonym for BestSpeed.
+ /// </summary>
+ Level1 = 1,
+
+ /// <summary>
+ /// A little slower, but better, than level 1.
+ /// </summary>
+ Level2 = 2,
+
+ /// <summary>
+ /// A little slower, but better, than level 2.
+ /// </summary>
+ Level3 = 3,
+
+ /// <summary>
+ /// A little slower, but better, than level 3.
+ /// </summary>
+ Level4 = 4,
+
+ /// <summary>
+ /// A little slower than level 4, but with better compression.
+ /// </summary>
+ Level5 = 5,
+
+ /// <summary>
+ /// The default compression level, with a good balance of speed and compression efficiency.
+ /// </summary>
+ Default = 6,
+ /// <summary>
+ /// A synonym for Default.
+ /// </summary>
+ Level6 = 6,
+
+ /// <summary>
+ /// Pretty good compression!
+ /// </summary>
+ Level7 = 7,
+
+ /// <summary>
+ /// Better compression than Level7!
+ /// </summary>
+ Level8 = 8,
+
+ /// <summary>
+ /// The "best" compression, where best means greatest reduction in size of the input data stream.
+ /// This is also the slowest compression.
+ /// </summary>
+ BestCompression = 9,
+
+ /// <summary>
+ /// A synonym for BestCompression.
+ /// </summary>
+ Level9 = 9,
+ }
+
+ /// <summary>
+ /// Describes options for how the compression algorithm is executed. Different strategies
+ /// work better on different sorts of data. The strategy parameter can affect the compression
+ /// ratio and the speed of compression but not the correctness of the compresssion.
+ /// </summary>
+ internal enum CompressionStrategy
+ {
+ /// <summary>
+ /// The default strategy is probably the best for normal data.
+ /// </summary>
+ Default = 0,
+
+ /// <summary>
+ /// The <c>Filtered</c> strategy is intended to be used most effectively with data produced by a
+ /// filter or predictor. By this definition, filtered data consists mostly of small
+ /// values with a somewhat random distribution. In this case, the compression algorithm
+ /// is tuned to compress them better. The effect of <c>Filtered</c> is to force more Huffman
+ /// coding and less string matching; it is a half-step between <c>Default</c> and <c>HuffmanOnly</c>.
+ /// </summary>
+ Filtered = 1,
+
+ /// <summary>
+ /// Using <c>HuffmanOnly</c> will force the compressor to do Huffman encoding only, with no
+ /// string matching.
+ /// </summary>
+ HuffmanOnly = 2,
+ }
+
+
+ /// <summary>
+ /// An enum to specify the direction of transcoding - whether to compress or decompress.
+ /// </summary>
+ internal enum CompressionMode
+ {
+ /// <summary>
+ /// Used to specify that the stream should compress the data.
+ /// </summary>
+ Compress= 0,
+ /// <summary>
+ /// Used to specify that the stream should decompress the data.
+ /// </summary>
+ Decompress = 1,
+ }
+
+
+ /// <summary>
+ /// A general purpose exception class for exceptions in the Zlib library.
+ /// </summary>
+ [Interop.GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d0000E")]
+ internal class ZlibException : System.Exception
+ {
+ /// <summary>
+ /// The ZlibException class captures exception information generated
+ /// by the Zlib library.
+ /// </summary>
+ public ZlibException()
+ : base()
+ {
+ }
+
+ /// <summary>
+ /// This ctor collects a message attached to the exception.
+ /// </summary>
+ /// <param name="s">the message for the exception.</param>
+ public ZlibException(System.String s)
+ : base(s)
+ {
+ }
+ }
+
+
+ internal class SharedUtils
+ {
+ /// <summary>
+ /// Performs an unsigned bitwise right shift with the specified number
+ /// </summary>
+ /// <param name="number">Number to operate on</param>
+ /// <param name="bits">Ammount of bits to shift</param>
+ /// <returns>The resulting number from the shift operation</returns>
+ internal static int URShift(int number, int bits)
+ {
+ return (int)((uint)number >> bits);
+ }
+
+#if NOT
+ /// <summary>
+ /// Performs an unsigned bitwise right shift with the specified number
+ /// </summary>
+ /// <param name="number">Number to operate on</param>
+ /// <param name="bits">Ammount of bits to shift</param>
+ /// <returns>The resulting number from the shift operation</returns>
+ internal static long URShift(long number, int bits)
+ {
+ return (long) ((UInt64)number >> bits);
+ }
+#endif
+
+ /// <summary>
+ /// Reads a number of characters from the current source TextReader and writes
+ /// the data to the target array at the specified index.
+ /// </summary>
+ ///
+ /// <param name="sourceTextReader">The source TextReader to read from</param>
+ /// <param name="target">Contains the array of characteres read from the source TextReader.</param>
+ /// <param name="start">The starting index of the target array.</param>
+ /// <param name="count">The maximum number of characters to read from the source TextReader.</param>
+ ///
+ /// <returns>
+ /// The number of characters read. The number will be less than or equal to
+ /// count depending on the data available in the source TextReader. Returns -1
+ /// if the end of the stream is reached.
+ /// </returns>
+ internal static System.Int32 ReadInput(System.IO.TextReader sourceTextReader, byte[] target, int start, int count)
+ {
+ // Returns 0 bytes if not enough space in target
+ if (target.Length == 0) return 0;
+
+ char[] charArray = new char[target.Length];
+ int bytesRead = sourceTextReader.Read(charArray, start, count);
+
+ // Returns -1 if EOF
+ if (bytesRead == 0) return -1;
+
+ for (int index = start; index < start + bytesRead; index++)
+ target[index] = (byte)charArray[index];
+
+ return bytesRead;
+ }
+
+
+ internal static byte[] ToByteArray(System.String sourceString)
+ {
+ return System.Text.UTF8Encoding.UTF8.GetBytes(sourceString);
+ }
+
+
+ internal static char[] ToCharArray(byte[] byteArray)
+ {
+ return System.Text.UTF8Encoding.UTF8.GetChars(byteArray);
+ }
+ }
+
+ internal static class InternalConstants
+ {
+ internal static readonly int MAX_BITS = 15;
+ internal static readonly int BL_CODES = 19;
+ internal static readonly int D_CODES = 30;
+ internal static readonly int LITERALS = 256;
+ internal static readonly int LENGTH_CODES = 29;
+ internal static readonly int L_CODES = (LITERALS + 1 + LENGTH_CODES);
+
+ // Bit length codes must not exceed MAX_BL_BITS bits
+ internal static readonly int MAX_BL_BITS = 7;
+
+ // repeat previous bit length 3-6 times (2 bits of repeat count)
+ internal static readonly int REP_3_6 = 16;
+
+ // repeat a zero length 3-10 times (3 bits of repeat count)
+ internal static readonly int REPZ_3_10 = 17;
+
+ // repeat a zero length 11-138 times (7 bits of repeat count)
+ internal static readonly int REPZ_11_138 = 18;
+
+ }
+
+ internal sealed class StaticTree
+ {
+ internal static readonly short[] lengthAndLiteralsTreeCodes = new short[] {
+ 12, 8, 140, 8, 76, 8, 204, 8, 44, 8, 172, 8, 108, 8, 236, 8,
+ 28, 8, 156, 8, 92, 8, 220, 8, 60, 8, 188, 8, 124, 8, 252, 8,
+ 2, 8, 130, 8, 66, 8, 194, 8, 34, 8, 162, 8, 98, 8, 226, 8,
+ 18, 8, 146, 8, 82, 8, 210, 8, 50, 8, 178, 8, 114, 8, 242, 8,
+ 10, 8, 138, 8, 74, 8, 202, 8, 42, 8, 170, 8, 106, 8, 234, 8,
+ 26, 8, 154, 8, 90, 8, 218, 8, 58, 8, 186, 8, 122, 8, 250, 8,
+ 6, 8, 134, 8, 70, 8, 198, 8, 38, 8, 166, 8, 102, 8, 230, 8,
+ 22, 8, 150, 8, 86, 8, 214, 8, 54, 8, 182, 8, 118, 8, 246, 8,
+ 14, 8, 142, 8, 78, 8, 206, 8, 46, 8, 174, 8, 110, 8, 238, 8,
+ 30, 8, 158, 8, 94, 8, 222, 8, 62, 8, 190, 8, 126, 8, 254, 8,
+ 1, 8, 129, 8, 65, 8, 193, 8, 33, 8, 161, 8, 97, 8, 225, 8,
+ 17, 8, 145, 8, 81, 8, 209, 8, 49, 8, 177, 8, 113, 8, 241, 8,
+ 9, 8, 137, 8, 73, 8, 201, 8, 41, 8, 169, 8, 105, 8, 233, 8,
+ 25, 8, 153, 8, 89, 8, 217, 8, 57, 8, 185, 8, 121, 8, 249, 8,
+ 5, 8, 133, 8, 69, 8, 197, 8, 37, 8, 165, 8, 101, 8, 229, 8,
+ 21, 8, 149, 8, 85, 8, 213, 8, 53, 8, 181, 8, 117, 8, 245, 8,
+ 13, 8, 141, 8, 77, 8, 205, 8, 45, 8, 173, 8, 109, 8, 237, 8,
+ 29, 8, 157, 8, 93, 8, 221, 8, 61, 8, 189, 8, 125, 8, 253, 8,
+ 19, 9, 275, 9, 147, 9, 403, 9, 83, 9, 339, 9, 211, 9, 467, 9,
+ 51, 9, 307, 9, 179, 9, 435, 9, 115, 9, 371, 9, 243, 9, 499, 9,
+ 11, 9, 267, 9, 139, 9, 395, 9, 75, 9, 331, 9, 203, 9, 459, 9,
+ 43, 9, 299, 9, 171, 9, 427, 9, 107, 9, 363, 9, 235, 9, 491, 9,
+ 27, 9, 283, 9, 155, 9, 411, 9, 91, 9, 347, 9, 219, 9, 475, 9,
+ 59, 9, 315, 9, 187, 9, 443, 9, 123, 9, 379, 9, 251, 9, 507, 9,
+ 7, 9, 263, 9, 135, 9, 391, 9, 71, 9, 327, 9, 199, 9, 455, 9,
+ 39, 9, 295, 9, 167, 9, 423, 9, 103, 9, 359, 9, 231, 9, 487, 9,
+ 23, 9, 279, 9, 151, 9, 407, 9, 87, 9, 343, 9, 215, 9, 471, 9,
+ 55, 9, 311, 9, 183, 9, 439, 9, 119, 9, 375, 9, 247, 9, 503, 9,
+ 15, 9, 271, 9, 143, 9, 399, 9, 79, 9, 335, 9, 207, 9, 463, 9,
+ 47, 9, 303, 9, 175, 9, 431, 9, 111, 9, 367, 9, 239, 9, 495, 9,
+ 31, 9, 287, 9, 159, 9, 415, 9, 95, 9, 351, 9, 223, 9, 479, 9,
+ 63, 9, 319, 9, 191, 9, 447, 9, 127, 9, 383, 9, 255, 9, 511, 9,
+ 0, 7, 64, 7, 32, 7, 96, 7, 16, 7, 80, 7, 48, 7, 112, 7,
+ 8, 7, 72, 7, 40, 7, 104, 7, 24, 7, 88, 7, 56, 7, 120, 7,
+ 4, 7, 68, 7, 36, 7, 100, 7, 20, 7, 84, 7, 52, 7, 116, 7,
+ 3, 8, 131, 8, 67, 8, 195, 8, 35, 8, 163, 8, 99, 8, 227, 8
+ };
+
+ internal static readonly short[] distTreeCodes = new short[] {
+ 0, 5, 16, 5, 8, 5, 24, 5, 4, 5, 20, 5, 12, 5, 28, 5,
+ 2, 5, 18, 5, 10, 5, 26, 5, 6, 5, 22, 5, 14, 5, 30, 5,
+ 1, 5, 17, 5, 9, 5, 25, 5, 5, 5, 21, 5, 13, 5, 29, 5,
+ 3, 5, 19, 5, 11, 5, 27, 5, 7, 5, 23, 5 };
+
+ internal static readonly StaticTree Literals;
+ internal static readonly StaticTree Distances;
+ internal static readonly StaticTree BitLengths;
+
+ internal short[] treeCodes; // static tree or null
+ internal int[] extraBits; // extra bits for each code or null
+ internal int extraBase; // base index for extra_bits
+ internal int elems; // max number of elements in the tree
+ internal int maxLength; // max bit length for the codes
+
+ private StaticTree(short[] treeCodes, int[] extraBits, int extraBase, int elems, int maxLength)
+ {
+ this.treeCodes = treeCodes;
+ this.extraBits = extraBits;
+ this.extraBase = extraBase;
+ this.elems = elems;
+ this.maxLength = maxLength;
+ }
+ static StaticTree()
+ {
+ Literals = new StaticTree(lengthAndLiteralsTreeCodes, Tree.ExtraLengthBits, InternalConstants.LITERALS + 1, InternalConstants.L_CODES, InternalConstants.MAX_BITS);
+ Distances = new StaticTree(distTreeCodes, Tree.ExtraDistanceBits, 0, InternalConstants.D_CODES, InternalConstants.MAX_BITS);
+ BitLengths = new StaticTree(null, Tree.extra_blbits, 0, InternalConstants.BL_CODES, InternalConstants.MAX_BL_BITS);
+ }
+ }
+
+
+
+ /// <summary>
+ /// Computes an Adler-32 checksum.
+ /// </summary>
+ /// <remarks>
+ /// The Adler checksum is similar to a CRC checksum, but faster to compute, though less
+ /// reliable. It is used in producing RFC1950 compressed streams. The Adler checksum
+ /// is a required part of the "ZLIB" standard. Applications will almost never need to
+ /// use this class directly.
+ /// </remarks>
+ ///
+ /// <exclude/>
+ internal sealed class Adler
+ {
+ // largest prime smaller than 65536
+ private static readonly uint BASE = 65521;
+ // NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1
+ private static readonly int NMAX = 5552;
+
+
+#pragma warning disable 3001
+#pragma warning disable 3002
+
+ /// <summary>
+ /// Calculates the Adler32 checksum.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// This is used within ZLIB. You probably don't need to use this directly.
+ /// </para>
+ /// </remarks>
+ /// <example>
+ /// To compute an Adler32 checksum on a byte array:
+ /// <code>
+ /// var adler = Adler.Adler32(0, null, 0, 0);
+ /// adler = Adler.Adler32(adler, buffer, index, length);
+ /// </code>
+ /// </example>
+ internal static uint Adler32(uint adler, byte[] buf, int index, int len)
+ {
+ if (buf == null)
+ return 1;
+
+ uint s1 = (uint) (adler & 0xffff);
+ uint s2 = (uint) ((adler >> 16) & 0xffff);
+
+ while (len > 0)
+ {
+ int k = len < NMAX ? len : NMAX;
+ len -= k;
+ while (k >= 16)
+ {
+ //s1 += (buf[index++] & 0xff); s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ s1 += buf[index++]; s2 += s1;
+ k -= 16;
+ }
+ if (k != 0)
+ {
+ do
+ {
+ s1 += buf[index++];
+ s2 += s1;
+ }
+ while (--k != 0);
+ }
+ s1 %= BASE;
+ s2 %= BASE;
+ }
+ return (uint)((s2 << 16) | s1);
+ }
+#pragma warning restore 3001
+#pragma warning restore 3002
+
+ }
+
+}
\ No newline at end of file
--- /dev/null
+// ZlibBaseStream.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-August-06 21:22:38>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the ZlibBaseStream class, which is an intnernal
+// base class for DeflateStream, ZlibStream and GZipStream.
+//
+// ------------------------------------------------------------------
+
+using System;
+using System.IO;
+
+namespace Ionic.Zlib
+{
+
+ internal enum ZlibStreamFlavor { ZLIB = 1950, DEFLATE = 1951, GZIP = 1952 }
+
+ internal class ZlibBaseStream : System.IO.Stream
+ {
+ protected internal ZlibCodec _z = null; // deferred init... new ZlibCodec();
+
+ protected internal StreamMode _streamMode = StreamMode.Undefined;
+ protected internal FlushType _flushMode;
+ protected internal ZlibStreamFlavor _flavor;
+ protected internal CompressionMode _compressionMode;
+ protected internal CompressionLevel _level;
+ protected internal bool _leaveOpen;
+ protected internal byte[] _workingBuffer;
+ protected internal int _bufferSize = ZlibConstants.WorkingBufferSizeDefault;
+ protected internal byte[] _buf1 = new byte[1];
+
+ protected internal System.IO.Stream _stream;
+ protected internal CompressionStrategy Strategy = CompressionStrategy.Default;
+
+ // workitem 7159
+ Ionic.Crc.CRC32 crc;
+ protected internal string _GzipFileName;
+ protected internal string _GzipComment;
+ protected internal DateTime _GzipMtime;
+ protected internal int _gzipHeaderByteCount;
+
+ internal int Crc32 { get { if (crc == null) return 0; return crc.Crc32Result; } }
+
+ public ZlibBaseStream(System.IO.Stream stream,
+ CompressionMode compressionMode,
+ CompressionLevel level,
+ ZlibStreamFlavor flavor,
+ bool leaveOpen)
+ : base()
+ {
+ this._flushMode = FlushType.None;
+ //this._workingBuffer = new byte[WORKING_BUFFER_SIZE_DEFAULT];
+ this._stream = stream;
+ this._leaveOpen = leaveOpen;
+ this._compressionMode = compressionMode;
+ this._flavor = flavor;
+ this._level = level;
+ // workitem 7159
+ if (flavor == ZlibStreamFlavor.GZIP)
+ {
+ this.crc = new Ionic.Crc.CRC32();
+ }
+ }
+
+
+ protected internal bool _wantCompress
+ {
+ get
+ {
+ return (this._compressionMode == CompressionMode.Compress);
+ }
+ }
+
+ private ZlibCodec z
+ {
+ get
+ {
+ if (_z == null)
+ {
+ bool wantRfc1950Header = (this._flavor == ZlibStreamFlavor.ZLIB);
+ _z = new ZlibCodec();
+ if (this._compressionMode == CompressionMode.Decompress)
+ {
+ _z.InitializeInflate(wantRfc1950Header);
+ }
+ else
+ {
+ _z.Strategy = Strategy;
+ _z.InitializeDeflate(this._level, wantRfc1950Header);
+ }
+ }
+ return _z;
+ }
+ }
+
+
+
+ private byte[] workingBuffer
+ {
+ get
+ {
+ if (_workingBuffer == null)
+ _workingBuffer = new byte[_bufferSize];
+ return _workingBuffer;
+ }
+ }
+
+
+
+ public override void Write(System.Byte[] buffer, int offset, int count)
+ {
+ // workitem 7159
+ // calculate the CRC on the unccompressed data (before writing)
+ if (crc != null)
+ crc.SlurpBlock(buffer, offset, count);
+
+ if (_streamMode == StreamMode.Undefined)
+ _streamMode = StreamMode.Writer;
+ else if (_streamMode != StreamMode.Writer)
+ throw new ZlibException("Cannot Write after Reading.");
+
+ if (count == 0)
+ return;
+
+ // first reference of z property will initialize the private var _z
+ z.InputBuffer = buffer;
+ _z.NextIn = offset;
+ _z.AvailableBytesIn = count;
+ bool done = false;
+ do
+ {
+ _z.OutputBuffer = workingBuffer;
+ _z.NextOut = 0;
+ _z.AvailableBytesOut = _workingBuffer.Length;
+ int rc = (_wantCompress)
+ ? _z.Deflate(_flushMode)
+ : _z.Inflate(_flushMode);
+ if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
+ throw new ZlibException((_wantCompress ? "de" : "in") + "flating: " + _z.Message);
+
+ //if (_workingBuffer.Length - _z.AvailableBytesOut > 0)
+ _stream.Write(_workingBuffer, 0, _workingBuffer.Length - _z.AvailableBytesOut);
+
+ done = _z.AvailableBytesIn == 0 && _z.AvailableBytesOut != 0;
+
+ // If GZIP and de-compress, we're done when 8 bytes remain.
+ if (_flavor == ZlibStreamFlavor.GZIP && !_wantCompress)
+ done = (_z.AvailableBytesIn == 8 && _z.AvailableBytesOut != 0);
+
+ }
+ while (!done);
+ }
+
+
+
+ private void finish()
+ {
+ if (_z == null) return;
+
+ if (_streamMode == StreamMode.Writer)
+ {
+ bool done = false;
+ do
+ {
+ _z.OutputBuffer = workingBuffer;
+ _z.NextOut = 0;
+ _z.AvailableBytesOut = _workingBuffer.Length;
+ int rc = (_wantCompress)
+ ? _z.Deflate(FlushType.Finish)
+ : _z.Inflate(FlushType.Finish);
+
+ if (rc != ZlibConstants.Z_STREAM_END && rc != ZlibConstants.Z_OK)
+ {
+ string verb = (_wantCompress ? "de" : "in") + "flating";
+ if (_z.Message == null)
+ throw new ZlibException(String.Format("{0}: (rc = {1})", verb, rc));
+ else
+ throw new ZlibException(verb + ": " + _z.Message);
+ }
+
+ if (_workingBuffer.Length - _z.AvailableBytesOut > 0)
+ {
+ _stream.Write(_workingBuffer, 0, _workingBuffer.Length - _z.AvailableBytesOut);
+ }
+
+ done = _z.AvailableBytesIn == 0 && _z.AvailableBytesOut != 0;
+ // If GZIP and de-compress, we're done when 8 bytes remain.
+ if (_flavor == ZlibStreamFlavor.GZIP && !_wantCompress)
+ done = (_z.AvailableBytesIn == 8 && _z.AvailableBytesOut != 0);
+
+ }
+ while (!done);
+
+ Flush();
+
+ // workitem 7159
+ if (_flavor == ZlibStreamFlavor.GZIP)
+ {
+ if (_wantCompress)
+ {
+ // Emit the GZIP trailer: CRC32 and size mod 2^32
+ int c1 = crc.Crc32Result;
+ _stream.Write(BitConverter.GetBytes(c1), 0, 4);
+ int c2 = (Int32)(crc.TotalBytesRead & 0x00000000FFFFFFFF);
+ _stream.Write(BitConverter.GetBytes(c2), 0, 4);
+ }
+ else
+ {
+ throw new ZlibException("Writing with decompression is not supported.");
+ }
+ }
+ }
+ // workitem 7159
+ else if (_streamMode == StreamMode.Reader)
+ {
+ if (_flavor == ZlibStreamFlavor.GZIP)
+ {
+ if (!_wantCompress)
+ {
+ // workitem 8501: handle edge case (decompress empty stream)
+ if (_z.TotalBytesOut == 0L)
+ return;
+
+ // Read and potentially verify the GZIP trailer:
+ // CRC32 and size mod 2^32
+ byte[] trailer = new byte[8];
+
+ // workitems 8679 & 12554
+ if (_z.AvailableBytesIn < 8)
+ {
+ // Make sure we have read to the end of the stream
+ Array.Copy(_z.InputBuffer, _z.NextIn, trailer, 0, _z.AvailableBytesIn);
+ int bytesNeeded = 8 - _z.AvailableBytesIn;
+ int bytesRead = _stream.Read(trailer,
+ _z.AvailableBytesIn,
+ bytesNeeded);
+ if (bytesNeeded != bytesRead)
+ {
+ throw new ZlibException(String.Format("Missing or incomplete GZIP trailer. Expected 8 bytes, got {0}.",
+ _z.AvailableBytesIn + bytesRead));
+ }
+ }
+ else
+ {
+ Array.Copy(_z.InputBuffer, _z.NextIn, trailer, 0, trailer.Length);
+ }
+
+ Int32 crc32_expected = BitConverter.ToInt32(trailer, 0);
+ Int32 crc32_actual = crc.Crc32Result;
+ Int32 isize_expected = BitConverter.ToInt32(trailer, 4);
+ Int32 isize_actual = (Int32)(_z.TotalBytesOut & 0x00000000FFFFFFFF);
+
+ if (crc32_actual != crc32_expected)
+ throw new ZlibException(String.Format("Bad CRC32 in GZIP trailer. (actual({0:X8})!=expected({1:X8}))", crc32_actual, crc32_expected));
+
+ if (isize_actual != isize_expected)
+ throw new ZlibException(String.Format("Bad size in GZIP trailer. (actual({0})!=expected({1}))", isize_actual, isize_expected));
+
+ }
+ else
+ {
+ throw new ZlibException("Reading with compression is not supported.");
+ }
+ }
+ }
+ }
+
+
+ private void end()
+ {
+ if (z == null)
+ return;
+ if (_wantCompress)
+ {
+ _z.EndDeflate();
+ }
+ else
+ {
+ _z.EndInflate();
+ }
+ _z = null;
+ }
+
+
+ public override void Close()
+ {
+ if (_stream == null) return;
+ try
+ {
+ finish();
+ }
+ finally
+ {
+ end();
+ if (!_leaveOpen) _stream.Close();
+ _stream = null;
+ }
+ }
+
+ public override void Flush()
+ {
+ _stream.Flush();
+ }
+
+ public override System.Int64 Seek(System.Int64 offset, System.IO.SeekOrigin origin)
+ {
+ throw new NotImplementedException();
+ //_outStream.Seek(offset, origin);
+ }
+ public override void SetLength(System.Int64 value)
+ {
+ _stream.SetLength(value);
+ }
+
+
+#if NOT
+ public int Read()
+ {
+ if (Read(_buf1, 0, 1) == 0)
+ return 0;
+ // calculate CRC after reading
+ if (crc!=null)
+ crc.SlurpBlock(_buf1,0,1);
+ return (_buf1[0] & 0xFF);
+ }
+#endif
+
+ private bool nomoreinput = false;
+
+
+
+ private string ReadZeroTerminatedString()
+ {
+ var list = new System.Collections.Generic.List<byte>();
+ bool done = false;
+ do
+ {
+ // workitem 7740
+ int n = _stream.Read(_buf1, 0, 1);
+ if (n != 1)
+ throw new ZlibException("Unexpected EOF reading GZIP header.");
+ else
+ {
+ if (_buf1[0] == 0)
+ done = true;
+ else
+ list.Add(_buf1[0]);
+ }
+ } while (!done);
+ byte[] a = list.ToArray();
+ return GZipStream.iso8859dash1.GetString(a, 0, a.Length);
+ }
+
+
+ private int _ReadAndValidateGzipHeader()
+ {
+ int totalBytesRead = 0;
+ // read the header on the first read
+ byte[] header = new byte[10];
+ int n = _stream.Read(header, 0, header.Length);
+
+ // workitem 8501: handle edge case (decompress empty stream)
+ if (n == 0)
+ return 0;
+
+ if (n != 10)
+ throw new ZlibException("Not a valid GZIP stream.");
+
+ if (header[0] != 0x1F || header[1] != 0x8B || header[2] != 8)
+ throw new ZlibException("Bad GZIP header.");
+
+ Int32 timet = BitConverter.ToInt32(header, 4);
+ _GzipMtime = GZipStream._unixEpoch.AddSeconds(timet);
+ totalBytesRead += n;
+ if ((header[3] & 0x04) == 0x04)
+ {
+ // read and discard extra field
+ n = _stream.Read(header, 0, 2); // 2-byte length field
+ totalBytesRead += n;
+
+ Int16 extraLength = (Int16)(header[0] + header[1] * 256);
+ byte[] extra = new byte[extraLength];
+ n = _stream.Read(extra, 0, extra.Length);
+ if (n != extraLength)
+ throw new ZlibException("Unexpected end-of-file reading GZIP header.");
+ totalBytesRead += n;
+ }
+ if ((header[3] & 0x08) == 0x08)
+ _GzipFileName = ReadZeroTerminatedString();
+ if ((header[3] & 0x10) == 0x010)
+ _GzipComment = ReadZeroTerminatedString();
+ if ((header[3] & 0x02) == 0x02)
+ Read(_buf1, 0, 1); // CRC16, ignore
+
+ return totalBytesRead;
+ }
+
+
+
+ public override System.Int32 Read(System.Byte[] buffer, System.Int32 offset, System.Int32 count)
+ {
+ // According to MS documentation, any implementation of the IO.Stream.Read function must:
+ // (a) throw an exception if offset & count reference an invalid part of the buffer,
+ // or if count < 0, or if buffer is null
+ // (b) return 0 only upon EOF, or if count = 0
+ // (c) if not EOF, then return at least 1 byte, up to <count> bytes
+
+ if (_streamMode == StreamMode.Undefined)
+ {
+ if (!this._stream.CanRead) throw new ZlibException("The stream is not readable.");
+ // for the first read, set up some controls.
+ _streamMode = StreamMode.Reader;
+ // (The first reference to _z goes through the private accessor which
+ // may initialize it.)
+ z.AvailableBytesIn = 0;
+ if (_flavor == ZlibStreamFlavor.GZIP)
+ {
+ _gzipHeaderByteCount = _ReadAndValidateGzipHeader();
+ // workitem 8501: handle edge case (decompress empty stream)
+ if (_gzipHeaderByteCount == 0)
+ return 0;
+ }
+ }
+
+ if (_streamMode != StreamMode.Reader)
+ throw new ZlibException("Cannot Read after Writing.");
+
+ if (count == 0) return 0;
+ if (nomoreinput && _wantCompress) return 0; // workitem 8557
+ if (buffer == null) throw new ArgumentNullException("buffer");
+ if (count < 0) throw new ArgumentOutOfRangeException("count");
+ if (offset < buffer.GetLowerBound(0)) throw new ArgumentOutOfRangeException("offset");
+ if ((offset + count) > buffer.GetLength(0)) throw new ArgumentOutOfRangeException("count");
+
+ int rc = 0;
+
+ // set up the output of the deflate/inflate codec:
+ _z.OutputBuffer = buffer;
+ _z.NextOut = offset;
+ _z.AvailableBytesOut = count;
+
+ // This is necessary in case _workingBuffer has been resized. (new byte[])
+ // (The first reference to _workingBuffer goes through the private accessor which
+ // may initialize it.)
+ _z.InputBuffer = workingBuffer;
+
+ do
+ {
+ // need data in _workingBuffer in order to deflate/inflate. Here, we check if we have any.
+ if ((_z.AvailableBytesIn == 0) && (!nomoreinput))
+ {
+ // No data available, so try to Read data from the captive stream.
+ _z.NextIn = 0;
+ _z.AvailableBytesIn = _stream.Read(_workingBuffer, 0, _workingBuffer.Length);
+ if (_z.AvailableBytesIn == 0)
+ nomoreinput = true;
+
+ }
+ // we have data in InputBuffer; now compress or decompress as appropriate
+ rc = (_wantCompress)
+ ? _z.Deflate(_flushMode)
+ : _z.Inflate(_flushMode);
+
+ if (nomoreinput && (rc == ZlibConstants.Z_BUF_ERROR))
+ return 0;
+
+ if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
+ throw new ZlibException(String.Format("{0}flating: rc={1} msg={2}", (_wantCompress ? "de" : "in"), rc, _z.Message));
+
+ if ((nomoreinput || rc == ZlibConstants.Z_STREAM_END) && (_z.AvailableBytesOut == count))
+ break; // nothing more to read
+ }
+ //while (_z.AvailableBytesOut == count && rc == ZlibConstants.Z_OK);
+ while (_z.AvailableBytesOut > 0 && !nomoreinput && rc == ZlibConstants.Z_OK);
+
+
+ // workitem 8557
+ // is there more room in output?
+ if (_z.AvailableBytesOut > 0)
+ {
+ if (rc == ZlibConstants.Z_OK && _z.AvailableBytesIn == 0)
+ {
+ // deferred
+ }
+
+ // are we completely done reading?
+ if (nomoreinput)
+ {
+ // and in compression?
+ if (_wantCompress)
+ {
+ // no more input data available; therefore we flush to
+ // try to complete the read
+ rc = _z.Deflate(FlushType.Finish);
+
+ if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
+ throw new ZlibException(String.Format("Deflating: rc={0} msg={1}", rc, _z.Message));
+ }
+ }
+ }
+
+
+ rc = (count - _z.AvailableBytesOut);
+
+ // calculate CRC after reading
+ if (crc != null)
+ crc.SlurpBlock(buffer, offset, rc);
+
+ return rc;
+ }
+
+
+
+ public override System.Boolean CanRead
+ {
+ get { return this._stream.CanRead; }
+ }
+
+ public override System.Boolean CanSeek
+ {
+ get { return this._stream.CanSeek; }
+ }
+
+ public override System.Boolean CanWrite
+ {
+ get { return this._stream.CanWrite; }
+ }
+
+ public override System.Int64 Length
+ {
+ get { return _stream.Length; }
+ }
+
+ public override long Position
+ {
+ get { throw new NotImplementedException(); }
+ set { throw new NotImplementedException(); }
+ }
+
+ internal enum StreamMode
+ {
+ Writer,
+ Reader,
+ Undefined,
+ }
+
+
+ internal static void CompressString(String s, Stream compressor)
+ {
+ byte[] uncompressed = System.Text.Encoding.UTF8.GetBytes(s);
+ using (compressor)
+ {
+ compressor.Write(uncompressed, 0, uncompressed.Length);
+ }
+ }
+
+ internal static void CompressBuffer(byte[] b, Stream compressor)
+ {
+ // workitem 8460
+ using (compressor)
+ {
+ compressor.Write(b, 0, b.Length);
+ }
+ }
+
+ internal static String UncompressString(byte[] compressed, Stream decompressor)
+ {
+ // workitem 8460
+ byte[] working = new byte[1024];
+ var encoding = System.Text.Encoding.UTF8;
+ using (var output = new MemoryStream())
+ {
+ using (decompressor)
+ {
+ int n;
+ while ((n = decompressor.Read(working, 0, working.Length)) != 0)
+ {
+ output.Write(working, 0, n);
+ }
+ }
+
+ // reset to allow read from start
+ output.Seek(0, SeekOrigin.Begin);
+ var sr = new StreamReader(output, encoding);
+ return sr.ReadToEnd();
+ }
+ }
+
+ internal static byte[] UncompressBuffer(byte[] compressed, Stream decompressor)
+ {
+ // workitem 8460
+ byte[] working = new byte[1024];
+ using (var output = new MemoryStream())
+ {
+ using (decompressor)
+ {
+ int n;
+ while ((n = decompressor.Read(working, 0, working.Length)) != 0)
+ {
+ output.Write(working, 0, n);
+ }
+ }
+ return output.ToArray();
+ }
+ }
+
+ }
+
+
+}
--- /dev/null
+// ZlibCodec.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2009-November-03 15:40:51>
+//
+// ------------------------------------------------------------------
+//
+// This module defines a Codec for ZLIB compression and
+// decompression. This code extends code that was based the jzlib
+// implementation of zlib, but this code is completely novel. The codec
+// class is new, and encapsulates some behaviors that are new, and some
+// that were present in other classes in the jzlib code base. In
+// keeping with the license for jzlib, the copyright to the jzlib code
+// is included below.
+//
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in
+// the documentation and/or other materials provided with the distribution.
+//
+// 3. The names of the authors may not be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
+// INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
+// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// -----------------------------------------------------------------------
+//
+// This program is based on zlib-1.1.3; credit to authors
+// Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
+// and contributors of zlib.
+//
+// -----------------------------------------------------------------------
+
+
+using System;
+using Interop=System.Runtime.InteropServices;
+
+namespace Ionic.Zlib
+{
+ /// <summary>
+ /// Encoder and Decoder for ZLIB and DEFLATE (IETF RFC1950 and RFC1951).
+ /// </summary>
+ ///
+ /// <remarks>
+ /// This class compresses and decompresses data according to the Deflate algorithm
+ /// and optionally, the ZLIB format, as documented in <see
+ /// href="http://www.ietf.org/rfc/rfc1950.txt">RFC 1950 - ZLIB</see> and <see
+ /// href="http://www.ietf.org/rfc/rfc1951.txt">RFC 1951 - DEFLATE</see>.
+ /// </remarks>
+ [Interop.GuidAttribute("ebc25cf6-9120-4283-b972-0e5520d0000D")]
+ [Interop.ComVisible(true)]
+#if !NETCF
+ [Interop.ClassInterface(Interop.ClassInterfaceType.AutoDispatch)]
+#endif
+ sealed internal class ZlibCodec
+ {
+ /// <summary>
+ /// The buffer from which data is taken.
+ /// </summary>
+ public byte[] InputBuffer;
+
+ /// <summary>
+ /// An index into the InputBuffer array, indicating where to start reading.
+ /// </summary>
+ public int NextIn;
+
+ /// <summary>
+ /// The number of bytes available in the InputBuffer, starting at NextIn.
+ /// </summary>
+ /// <remarks>
+ /// Generally you should set this to InputBuffer.Length before the first Inflate() or Deflate() call.
+ /// The class will update this number as calls to Inflate/Deflate are made.
+ /// </remarks>
+ public int AvailableBytesIn;
+
+ /// <summary>
+ /// Total number of bytes read so far, through all calls to Inflate()/Deflate().
+ /// </summary>
+ public long TotalBytesIn;
+
+ /// <summary>
+ /// Buffer to store output data.
+ /// </summary>
+ public byte[] OutputBuffer;
+
+ /// <summary>
+ /// An index into the OutputBuffer array, indicating where to start writing.
+ /// </summary>
+ public int NextOut;
+
+ /// <summary>
+ /// The number of bytes available in the OutputBuffer, starting at NextOut.
+ /// </summary>
+ /// <remarks>
+ /// Generally you should set this to OutputBuffer.Length before the first Inflate() or Deflate() call.
+ /// The class will update this number as calls to Inflate/Deflate are made.
+ /// </remarks>
+ public int AvailableBytesOut;
+
+ /// <summary>
+ /// Total number of bytes written to the output so far, through all calls to Inflate()/Deflate().
+ /// </summary>
+ public long TotalBytesOut;
+
+ /// <summary>
+ /// used for diagnostics, when something goes wrong!
+ /// </summary>
+ public System.String Message;
+
+ internal DeflateManager dstate;
+ internal InflateManager istate;
+
+ internal uint _Adler32;
+
+ /// <summary>
+ /// The compression level to use in this codec. Useful only in compression mode.
+ /// </summary>
+ public CompressionLevel CompressLevel = CompressionLevel.Default;
+
+ /// <summary>
+ /// The number of Window Bits to use.
+ /// </summary>
+ /// <remarks>
+ /// This gauges the size of the sliding window, and hence the
+ /// compression effectiveness as well as memory consumption. It's best to just leave this
+ /// setting alone if you don't know what it is. The maximum value is 15 bits, which implies
+ /// a 32k window.
+ /// </remarks>
+ public int WindowBits = ZlibConstants.WindowBitsDefault;
+
+ /// <summary>
+ /// The compression strategy to use.
+ /// </summary>
+ /// <remarks>
+ /// This is only effective in compression. The theory offered by ZLIB is that different
+ /// strategies could potentially produce significant differences in compression behavior
+ /// for different data sets. Unfortunately I don't have any good recommendations for how
+ /// to set it differently. When I tested changing the strategy I got minimally different
+ /// compression performance. It's best to leave this property alone if you don't have a
+ /// good feel for it. Or, you may want to produce a test harness that runs through the
+ /// different strategy options and evaluates them on different file types. If you do that,
+ /// let me know your results.
+ /// </remarks>
+ public CompressionStrategy Strategy = CompressionStrategy.Default;
+
+
+ /// <summary>
+ /// The Adler32 checksum on the data transferred through the codec so far. You probably don't need to look at this.
+ /// </summary>
+ public int Adler32 { get { return (int)_Adler32; } }
+
+
+ /// <summary>
+ /// Create a ZlibCodec.
+ /// </summary>
+ /// <remarks>
+ /// If you use this default constructor, you will later have to explicitly call
+ /// InitializeInflate() or InitializeDeflate() before using the ZlibCodec to compress
+ /// or decompress.
+ /// </remarks>
+ public ZlibCodec() { }
+
+ /// <summary>
+ /// Create a ZlibCodec that either compresses or decompresses.
+ /// </summary>
+ /// <param name="mode">
+ /// Indicates whether the codec should compress (deflate) or decompress (inflate).
+ /// </param>
+ public ZlibCodec(CompressionMode mode)
+ {
+ if (mode == CompressionMode.Compress)
+ {
+ int rc = InitializeDeflate();
+ if (rc != ZlibConstants.Z_OK) throw new ZlibException("Cannot initialize for deflate.");
+ }
+ else if (mode == CompressionMode.Decompress)
+ {
+ int rc = InitializeInflate();
+ if (rc != ZlibConstants.Z_OK) throw new ZlibException("Cannot initialize for inflate.");
+ }
+ else throw new ZlibException("Invalid ZlibStreamFlavor.");
+ }
+
+ /// <summary>
+ /// Initialize the inflation state.
+ /// </summary>
+ /// <remarks>
+ /// It is not necessary to call this before using the ZlibCodec to inflate data;
+ /// It is implicitly called when you call the constructor.
+ /// </remarks>
+ /// <returns>Z_OK if everything goes well.</returns>
+ public int InitializeInflate()
+ {
+ return InitializeInflate(this.WindowBits);
+ }
+
+ /// <summary>
+ /// Initialize the inflation state with an explicit flag to
+ /// govern the handling of RFC1950 header bytes.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// By default, the ZLIB header defined in <see
+ /// href="http://www.ietf.org/rfc/rfc1950.txt">RFC 1950</see> is expected. If
+ /// you want to read a zlib stream you should specify true for
+ /// expectRfc1950Header. If you have a deflate stream, you will want to specify
+ /// false. It is only necessary to invoke this initializer explicitly if you
+ /// want to specify false.
+ /// </remarks>
+ ///
+ /// <param name="expectRfc1950Header">whether to expect an RFC1950 header byte
+ /// pair when reading the stream of data to be inflated.</param>
+ ///
+ /// <returns>Z_OK if everything goes well.</returns>
+ public int InitializeInflate(bool expectRfc1950Header)
+ {
+ return InitializeInflate(this.WindowBits, expectRfc1950Header);
+ }
+
+ /// <summary>
+ /// Initialize the ZlibCodec for inflation, with the specified number of window bits.
+ /// </summary>
+ /// <param name="windowBits">The number of window bits to use. If you need to ask what that is,
+ /// then you shouldn't be calling this initializer.</param>
+ /// <returns>Z_OK if all goes well.</returns>
+ public int InitializeInflate(int windowBits)
+ {
+ this.WindowBits = windowBits;
+ return InitializeInflate(windowBits, true);
+ }
+
+ /// <summary>
+ /// Initialize the inflation state with an explicit flag to govern the handling of
+ /// RFC1950 header bytes.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// If you want to read a zlib stream you should specify true for
+ /// expectRfc1950Header. In this case, the library will expect to find a ZLIB
+ /// header, as defined in <see href="http://www.ietf.org/rfc/rfc1950.txt">RFC
+ /// 1950</see>, in the compressed stream. If you will be reading a DEFLATE or
+ /// GZIP stream, which does not have such a header, you will want to specify
+ /// false.
+ /// </remarks>
+ ///
+ /// <param name="expectRfc1950Header">whether to expect an RFC1950 header byte pair when reading
+ /// the stream of data to be inflated.</param>
+ /// <param name="windowBits">The number of window bits to use. If you need to ask what that is,
+ /// then you shouldn't be calling this initializer.</param>
+ /// <returns>Z_OK if everything goes well.</returns>
+ public int InitializeInflate(int windowBits, bool expectRfc1950Header)
+ {
+ this.WindowBits = windowBits;
+ if (dstate != null) throw new ZlibException("You may not call InitializeInflate() after calling InitializeDeflate().");
+ istate = new InflateManager(expectRfc1950Header);
+ return istate.Initialize(this, windowBits);
+ }
+
+ /// <summary>
+ /// Inflate the data in the InputBuffer, placing the result in the OutputBuffer.
+ /// </summary>
+ /// <remarks>
+ /// You must have set InputBuffer and OutputBuffer, NextIn and NextOut, and AvailableBytesIn and
+ /// AvailableBytesOut before calling this method.
+ /// </remarks>
+ /// <example>
+ /// <code>
+ /// private void InflateBuffer()
+ /// {
+ /// int bufferSize = 1024;
+ /// byte[] buffer = new byte[bufferSize];
+ /// ZlibCodec decompressor = new ZlibCodec();
+ ///
+ /// Console.WriteLine("\n============================================");
+ /// Console.WriteLine("Size of Buffer to Inflate: {0} bytes.", CompressedBytes.Length);
+ /// MemoryStream ms = new MemoryStream(DecompressedBytes);
+ ///
+ /// int rc = decompressor.InitializeInflate();
+ ///
+ /// decompressor.InputBuffer = CompressedBytes;
+ /// decompressor.NextIn = 0;
+ /// decompressor.AvailableBytesIn = CompressedBytes.Length;
+ ///
+ /// decompressor.OutputBuffer = buffer;
+ ///
+ /// // pass 1: inflate
+ /// do
+ /// {
+ /// decompressor.NextOut = 0;
+ /// decompressor.AvailableBytesOut = buffer.Length;
+ /// rc = decompressor.Inflate(FlushType.None);
+ ///
+ /// if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
+ /// throw new Exception("inflating: " + decompressor.Message);
+ ///
+ /// ms.Write(decompressor.OutputBuffer, 0, buffer.Length - decompressor.AvailableBytesOut);
+ /// }
+ /// while (decompressor.AvailableBytesIn > 0 || decompressor.AvailableBytesOut == 0);
+ ///
+ /// // pass 2: finish and flush
+ /// do
+ /// {
+ /// decompressor.NextOut = 0;
+ /// decompressor.AvailableBytesOut = buffer.Length;
+ /// rc = decompressor.Inflate(FlushType.Finish);
+ ///
+ /// if (rc != ZlibConstants.Z_STREAM_END && rc != ZlibConstants.Z_OK)
+ /// throw new Exception("inflating: " + decompressor.Message);
+ ///
+ /// if (buffer.Length - decompressor.AvailableBytesOut > 0)
+ /// ms.Write(buffer, 0, buffer.Length - decompressor.AvailableBytesOut);
+ /// }
+ /// while (decompressor.AvailableBytesIn > 0 || decompressor.AvailableBytesOut == 0);
+ ///
+ /// decompressor.EndInflate();
+ /// }
+ ///
+ /// </code>
+ /// </example>
+ /// <param name="flush">The flush to use when inflating.</param>
+ /// <returns>Z_OK if everything goes well.</returns>
+ public int Inflate(FlushType flush)
+ {
+ if (istate == null)
+ throw new ZlibException("No Inflate State!");
+ return istate.Inflate(flush);
+ }
+
+
+ /// <summary>
+ /// Ends an inflation session.
+ /// </summary>
+ /// <remarks>
+ /// Call this after successively calling Inflate(). This will cause all buffers to be flushed.
+ /// After calling this you cannot call Inflate() without a intervening call to one of the
+ /// InitializeInflate() overloads.
+ /// </remarks>
+ /// <returns>Z_OK if everything goes well.</returns>
+ public int EndInflate()
+ {
+ if (istate == null)
+ throw new ZlibException("No Inflate State!");
+ int ret = istate.End();
+ istate = null;
+ return ret;
+ }
+
+ /// <summary>
+ /// I don't know what this does!
+ /// </summary>
+ /// <returns>Z_OK if everything goes well.</returns>
+ public int SyncInflate()
+ {
+ if (istate == null)
+ throw new ZlibException("No Inflate State!");
+ return istate.Sync();
+ }
+
+ /// <summary>
+ /// Initialize the ZlibCodec for deflation operation.
+ /// </summary>
+ /// <remarks>
+ /// The codec will use the MAX window bits and the default level of compression.
+ /// </remarks>
+ /// <example>
+ /// <code>
+ /// int bufferSize = 40000;
+ /// byte[] CompressedBytes = new byte[bufferSize];
+ /// byte[] DecompressedBytes = new byte[bufferSize];
+ ///
+ /// ZlibCodec compressor = new ZlibCodec();
+ ///
+ /// compressor.InitializeDeflate(CompressionLevel.Default);
+ ///
+ /// compressor.InputBuffer = System.Text.ASCIIEncoding.ASCII.GetBytes(TextToCompress);
+ /// compressor.NextIn = 0;
+ /// compressor.AvailableBytesIn = compressor.InputBuffer.Length;
+ ///
+ /// compressor.OutputBuffer = CompressedBytes;
+ /// compressor.NextOut = 0;
+ /// compressor.AvailableBytesOut = CompressedBytes.Length;
+ ///
+ /// while (compressor.TotalBytesIn != TextToCompress.Length && compressor.TotalBytesOut < bufferSize)
+ /// {
+ /// compressor.Deflate(FlushType.None);
+ /// }
+ ///
+ /// while (true)
+ /// {
+ /// int rc= compressor.Deflate(FlushType.Finish);
+ /// if (rc == ZlibConstants.Z_STREAM_END) break;
+ /// }
+ ///
+ /// compressor.EndDeflate();
+ ///
+ /// </code>
+ /// </example>
+ /// <returns>Z_OK if all goes well. You generally don't need to check the return code.</returns>
+ public int InitializeDeflate()
+ {
+ return _InternalInitializeDeflate(true);
+ }
+
+ /// <summary>
+ /// Initialize the ZlibCodec for deflation operation, using the specified CompressionLevel.
+ /// </summary>
+ /// <remarks>
+ /// The codec will use the maximum window bits (15) and the specified
+ /// CompressionLevel. It will emit a ZLIB stream as it compresses.
+ /// </remarks>
+ /// <param name="level">The compression level for the codec.</param>
+ /// <returns>Z_OK if all goes well.</returns>
+ public int InitializeDeflate(CompressionLevel level)
+ {
+ this.CompressLevel = level;
+ return _InternalInitializeDeflate(true);
+ }
+
+
+ /// <summary>
+ /// Initialize the ZlibCodec for deflation operation, using the specified CompressionLevel,
+ /// and the explicit flag governing whether to emit an RFC1950 header byte pair.
+ /// </summary>
+ /// <remarks>
+ /// The codec will use the maximum window bits (15) and the specified CompressionLevel.
+ /// If you want to generate a zlib stream, you should specify true for
+ /// wantRfc1950Header. In this case, the library will emit a ZLIB
+ /// header, as defined in <see href="http://www.ietf.org/rfc/rfc1950.txt">RFC
+ /// 1950</see>, in the compressed stream.
+ /// </remarks>
+ /// <param name="level">The compression level for the codec.</param>
+ /// <param name="wantRfc1950Header">whether to emit an initial RFC1950 byte pair in the compressed stream.</param>
+ /// <returns>Z_OK if all goes well.</returns>
+ public int InitializeDeflate(CompressionLevel level, bool wantRfc1950Header)
+ {
+ this.CompressLevel = level;
+ return _InternalInitializeDeflate(wantRfc1950Header);
+ }
+
+
+ /// <summary>
+ /// Initialize the ZlibCodec for deflation operation, using the specified CompressionLevel,
+ /// and the specified number of window bits.
+ /// </summary>
+ /// <remarks>
+ /// The codec will use the specified number of window bits and the specified CompressionLevel.
+ /// </remarks>
+ /// <param name="level">The compression level for the codec.</param>
+ /// <param name="bits">the number of window bits to use. If you don't know what this means, don't use this method.</param>
+ /// <returns>Z_OK if all goes well.</returns>
+ public int InitializeDeflate(CompressionLevel level, int bits)
+ {
+ this.CompressLevel = level;
+ this.WindowBits = bits;
+ return _InternalInitializeDeflate(true);
+ }
+
+ /// <summary>
+ /// Initialize the ZlibCodec for deflation operation, using the specified
+ /// CompressionLevel, the specified number of window bits, and the explicit flag
+ /// governing whether to emit an RFC1950 header byte pair.
+ /// </summary>
+ ///
+ /// <param name="level">The compression level for the codec.</param>
+ /// <param name="wantRfc1950Header">whether to emit an initial RFC1950 byte pair in the compressed stream.</param>
+ /// <param name="bits">the number of window bits to use. If you don't know what this means, don't use this method.</param>
+ /// <returns>Z_OK if all goes well.</returns>
+ public int InitializeDeflate(CompressionLevel level, int bits, bool wantRfc1950Header)
+ {
+ this.CompressLevel = level;
+ this.WindowBits = bits;
+ return _InternalInitializeDeflate(wantRfc1950Header);
+ }
+
+ private int _InternalInitializeDeflate(bool wantRfc1950Header)
+ {
+ if (istate != null) throw new ZlibException("You may not call InitializeDeflate() after calling InitializeInflate().");
+ dstate = new DeflateManager();
+ dstate.WantRfc1950HeaderBytes = wantRfc1950Header;
+
+ return dstate.Initialize(this, this.CompressLevel, this.WindowBits, this.Strategy);
+ }
+
+ /// <summary>
+ /// Deflate one batch of data.
+ /// </summary>
+ /// <remarks>
+ /// You must have set InputBuffer and OutputBuffer before calling this method.
+ /// </remarks>
+ /// <example>
+ /// <code>
+ /// private void DeflateBuffer(CompressionLevel level)
+ /// {
+ /// int bufferSize = 1024;
+ /// byte[] buffer = new byte[bufferSize];
+ /// ZlibCodec compressor = new ZlibCodec();
+ ///
+ /// Console.WriteLine("\n============================================");
+ /// Console.WriteLine("Size of Buffer to Deflate: {0} bytes.", UncompressedBytes.Length);
+ /// MemoryStream ms = new MemoryStream();
+ ///
+ /// int rc = compressor.InitializeDeflate(level);
+ ///
+ /// compressor.InputBuffer = UncompressedBytes;
+ /// compressor.NextIn = 0;
+ /// compressor.AvailableBytesIn = UncompressedBytes.Length;
+ ///
+ /// compressor.OutputBuffer = buffer;
+ ///
+ /// // pass 1: deflate
+ /// do
+ /// {
+ /// compressor.NextOut = 0;
+ /// compressor.AvailableBytesOut = buffer.Length;
+ /// rc = compressor.Deflate(FlushType.None);
+ ///
+ /// if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
+ /// throw new Exception("deflating: " + compressor.Message);
+ ///
+ /// ms.Write(compressor.OutputBuffer, 0, buffer.Length - compressor.AvailableBytesOut);
+ /// }
+ /// while (compressor.AvailableBytesIn > 0 || compressor.AvailableBytesOut == 0);
+ ///
+ /// // pass 2: finish and flush
+ /// do
+ /// {
+ /// compressor.NextOut = 0;
+ /// compressor.AvailableBytesOut = buffer.Length;
+ /// rc = compressor.Deflate(FlushType.Finish);
+ ///
+ /// if (rc != ZlibConstants.Z_STREAM_END && rc != ZlibConstants.Z_OK)
+ /// throw new Exception("deflating: " + compressor.Message);
+ ///
+ /// if (buffer.Length - compressor.AvailableBytesOut > 0)
+ /// ms.Write(buffer, 0, buffer.Length - compressor.AvailableBytesOut);
+ /// }
+ /// while (compressor.AvailableBytesIn > 0 || compressor.AvailableBytesOut == 0);
+ ///
+ /// compressor.EndDeflate();
+ ///
+ /// ms.Seek(0, SeekOrigin.Begin);
+ /// CompressedBytes = new byte[compressor.TotalBytesOut];
+ /// ms.Read(CompressedBytes, 0, CompressedBytes.Length);
+ /// }
+ /// </code>
+ /// </example>
+ /// <param name="flush">whether to flush all data as you deflate. Generally you will want to
+ /// use Z_NO_FLUSH here, in a series of calls to Deflate(), and then call EndDeflate() to
+ /// flush everything.
+ /// </param>
+ /// <returns>Z_OK if all goes well.</returns>
+ public int Deflate(FlushType flush)
+ {
+ if (dstate == null)
+ throw new ZlibException("No Deflate State!");
+ return dstate.Deflate(flush);
+ }
+
+ /// <summary>
+ /// End a deflation session.
+ /// </summary>
+ /// <remarks>
+ /// Call this after making a series of one or more calls to Deflate(). All buffers are flushed.
+ /// </remarks>
+ /// <returns>Z_OK if all goes well.</returns>
+ public int EndDeflate()
+ {
+ if (dstate == null)
+ throw new ZlibException("No Deflate State!");
+ // TODO: dinoch Tue, 03 Nov 2009 15:39 (test this)
+ //int ret = dstate.End();
+ dstate = null;
+ return ZlibConstants.Z_OK; //ret;
+ }
+
+ /// <summary>
+ /// Reset a codec for another deflation session.
+ /// </summary>
+ /// <remarks>
+ /// Call this to reset the deflation state. For example if a thread is deflating
+ /// non-consecutive blocks, you can call Reset() after the Deflate(Sync) of the first
+ /// block and before the next Deflate(None) of the second block.
+ /// </remarks>
+ /// <returns>Z_OK if all goes well.</returns>
+ public void ResetDeflate()
+ {
+ if (dstate == null)
+ throw new ZlibException("No Deflate State!");
+ dstate.Reset();
+ }
+
+
+ /// <summary>
+ /// Set the CompressionStrategy and CompressionLevel for a deflation session.
+ /// </summary>
+ /// <param name="level">the level of compression to use.</param>
+ /// <param name="strategy">the strategy to use for compression.</param>
+ /// <returns>Z_OK if all goes well.</returns>
+ public int SetDeflateParams(CompressionLevel level, CompressionStrategy strategy)
+ {
+ if (dstate == null)
+ throw new ZlibException("No Deflate State!");
+ return dstate.SetParams(level, strategy);
+ }
+
+
+ /// <summary>
+ /// Set the dictionary to be used for either Inflation or Deflation.
+ /// </summary>
+ /// <param name="dictionary">The dictionary bytes to use.</param>
+ /// <returns>Z_OK if all goes well.</returns>
+ public int SetDictionary(byte[] dictionary)
+ {
+ if (istate != null)
+ return istate.SetDictionary(dictionary);
+
+ if (dstate != null)
+ return dstate.SetDictionary(dictionary);
+
+ throw new ZlibException("No Inflate or Deflate state!");
+ }
+
+ // Flush as much pending output as possible. All deflate() output goes
+ // through this function so some applications may wish to modify it
+ // to avoid allocating a large strm->next_out buffer and copying into it.
+ // (See also read_buf()).
+ internal void flush_pending()
+ {
+ int len = dstate.pendingCount;
+
+ if (len > AvailableBytesOut)
+ len = AvailableBytesOut;
+ if (len == 0)
+ return;
+
+ if (dstate.pending.Length <= dstate.nextPending ||
+ OutputBuffer.Length <= NextOut ||
+ dstate.pending.Length < (dstate.nextPending + len) ||
+ OutputBuffer.Length < (NextOut + len))
+ {
+ throw new ZlibException(String.Format("Invalid State. (pending.Length={0}, pendingCount={1})",
+ dstate.pending.Length, dstate.pendingCount));
+ }
+
+ Array.Copy(dstate.pending, dstate.nextPending, OutputBuffer, NextOut, len);
+
+ NextOut += len;
+ dstate.nextPending += len;
+ TotalBytesOut += len;
+ AvailableBytesOut -= len;
+ dstate.pendingCount -= len;
+ if (dstate.pendingCount == 0)
+ {
+ dstate.nextPending = 0;
+ }
+ }
+
+ // Read a new buffer from the current input stream, update the adler32
+ // and total number of bytes read. All deflate() input goes through
+ // this function so some applications may wish to modify it to avoid
+ // allocating a large strm->next_in buffer and copying from it.
+ // (See also flush_pending()).
+ internal int read_buf(byte[] buf, int start, int size)
+ {
+ int len = AvailableBytesIn;
+
+ if (len > size)
+ len = size;
+ if (len == 0)
+ return 0;
+
+ AvailableBytesIn -= len;
+
+ if (dstate.WantRfc1950HeaderBytes)
+ {
+ _Adler32 = Adler.Adler32(_Adler32, InputBuffer, NextIn, len);
+ }
+ Array.Copy(InputBuffer, NextIn, buf, start, len);
+ NextIn += len;
+ TotalBytesIn += len;
+ return len;
+ }
+
+ }
+}
\ No newline at end of file
--- /dev/null
+// ZlibConstants.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2009-November-03 18:50:19>
+//
+// ------------------------------------------------------------------
+//
+// This module defines constants used by the zlib class library. This
+// code is derived from the jzlib implementation of zlib, but
+// significantly modified. In keeping with the license for jzlib, the
+// copyright to that code is included here.
+//
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2000,2001,2002,2003 ymnk, JCraft,Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in
+// the documentation and/or other materials provided with the distribution.
+//
+// 3. The names of the authors may not be used to endorse or promote products
+// derived from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
+// INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
+// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// -----------------------------------------------------------------------
+//
+// This program is based on zlib-1.1.3; credit to authors
+// Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
+// and contributors of zlib.
+//
+// -----------------------------------------------------------------------
+
+
+using System;
+
+namespace Ionic.Zlib
+{
+ /// <summary>
+ /// A bunch of constants used in the Zlib interface.
+ /// </summary>
+ internal static class ZlibConstants
+ {
+ /// <summary>
+ /// The maximum number of window bits for the Deflate algorithm.
+ /// </summary>
+ public const int WindowBitsMax = 15; // 32K LZ77 window
+
+ /// <summary>
+ /// The default number of window bits for the Deflate algorithm.
+ /// </summary>
+ public const int WindowBitsDefault = WindowBitsMax;
+
+ /// <summary>
+ /// indicates everything is A-OK
+ /// </summary>
+ public const int Z_OK = 0;
+
+ /// <summary>
+ /// Indicates that the last operation reached the end of the stream.
+ /// </summary>
+ public const int Z_STREAM_END = 1;
+
+ /// <summary>
+ /// The operation ended in need of a dictionary.
+ /// </summary>
+ public const int Z_NEED_DICT = 2;
+
+ /// <summary>
+ /// There was an error with the stream - not enough data, not open and readable, etc.
+ /// </summary>
+ public const int Z_STREAM_ERROR = -2;
+
+ /// <summary>
+ /// There was an error with the data - not enough data, bad data, etc.
+ /// </summary>
+ public const int Z_DATA_ERROR = -3;
+
+ /// <summary>
+ /// There was an error with the working buffer.
+ /// </summary>
+ public const int Z_BUF_ERROR = -5;
+
+ /// <summary>
+ /// The size of the working buffer used in the ZlibCodec class. Defaults to 8192 bytes.
+ /// </summary>
+#if NETCF
+ public const int WorkingBufferSizeDefault = 8192;
+#else
+ public const int WorkingBufferSizeDefault = 16384;
+#endif
+ /// <summary>
+ /// The minimum size of the working buffer used in the ZlibCodec class. Currently it is 128 bytes.
+ /// </summary>
+ public const int WorkingBufferSizeMin = 1024;
+ }
+
+}
+
--- /dev/null
+// ZlibStream.cs
+// ------------------------------------------------------------------
+//
+// Copyright (c) 2009 Dino Chiesa and Microsoft Corporation.
+// All rights reserved.
+//
+// This code module is part of DotNetZip, a zipfile class library.
+//
+// ------------------------------------------------------------------
+//
+// This code is licensed under the Microsoft Public License.
+// See the file License.txt for the license details.
+// More info on: http://dotnetzip.codeplex.com
+//
+// ------------------------------------------------------------------
+//
+// last saved (in emacs):
+// Time-stamp: <2011-July-31 14:53:33>
+//
+// ------------------------------------------------------------------
+//
+// This module defines the ZlibStream class, which is similar in idea to
+// the System.IO.Compression.DeflateStream and
+// System.IO.Compression.GZipStream classes in the .NET BCL.
+//
+// ------------------------------------------------------------------
+
+using System;
+using System.IO;
+
+namespace Ionic.Zlib
+{
+
+ /// <summary>
+ /// Represents a Zlib stream for compression or decompression.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// The ZlibStream is a <see
+ /// href="http://en.wikipedia.org/wiki/Decorator_pattern">Decorator</see> on a <see
+ /// cref="System.IO.Stream"/>. It adds ZLIB compression or decompression to any
+ /// stream.
+ /// </para>
+ ///
+ /// <para> Using this stream, applications can compress or decompress data via
+ /// stream <c>Read()</c> and <c>Write()</c> operations. Either compresssion or
+ /// decompression can occur through either reading or writing. The compression
+ /// format used is ZLIB, which is documented in <see
+ /// href="http://www.ietf.org/rfc/rfc1950.txt">IETF RFC 1950</see>, "ZLIB Compressed
+ /// Data Format Specification version 3.3". This implementation of ZLIB always uses
+ /// DEFLATE as the compression method. (see <see
+ /// href="http://www.ietf.org/rfc/rfc1951.txt">IETF RFC 1951</see>, "DEFLATE
+ /// Compressed Data Format Specification version 1.3.") </para>
+ ///
+ /// <para>
+ /// The ZLIB format allows for varying compression methods, window sizes, and dictionaries.
+ /// This implementation always uses the DEFLATE compression method, a preset dictionary,
+ /// and 15 window bits by default.
+ /// </para>
+ ///
+ /// <para>
+ /// This class is similar to <see cref="DeflateStream"/>, except that it adds the
+ /// RFC1950 header and trailer bytes to a compressed stream when compressing, or expects
+ /// the RFC1950 header and trailer bytes when decompressing. It is also similar to the
+ /// <see cref="GZipStream"/>.
+ /// </para>
+ /// </remarks>
+ /// <seealso cref="DeflateStream" />
+ /// <seealso cref="GZipStream" />
+ internal class ZlibStream : System.IO.Stream
+ {
+ internal ZlibBaseStream _baseStream;
+ bool _disposed;
+
+ /// <summary>
+ /// Create a <c>ZlibStream</c> using the specified <c>CompressionMode</c>.
+ /// </summary>
+ /// <remarks>
+ ///
+ /// <para>
+ /// When mode is <c>CompressionMode.Compress</c>, the <c>ZlibStream</c>
+ /// will use the default compression level. The "captive" stream will be
+ /// closed when the <c>ZlibStream</c> is closed.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example uses a <c>ZlibStream</c> to compress a file, and writes the
+ /// compressed data to another file.
+ /// <code>
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
+ /// {
+ /// using (var raw = System.IO.File.Create(fileToCompress + ".zlib"))
+ /// {
+ /// using (Stream compressor = new ZlibStream(raw, CompressionMode.Compress))
+ /// {
+ /// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
+ /// int n;
+ /// while ((n= input.Read(buffer, 0, buffer.Length)) != 0)
+ /// {
+ /// compressor.Write(buffer, 0, n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using input As Stream = File.OpenRead(fileToCompress)
+ /// Using raw As FileStream = File.Create(fileToCompress & ".zlib")
+ /// Using compressor As Stream = New ZlibStream(raw, CompressionMode.Compress)
+ /// Dim buffer As Byte() = New Byte(4096) {}
+ /// Dim n As Integer = -1
+ /// Do While (n <> 0)
+ /// If (n > 0) Then
+ /// compressor.Write(buffer, 0, n)
+ /// End If
+ /// n = input.Read(buffer, 0, buffer.Length)
+ /// Loop
+ /// End Using
+ /// End Using
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="stream">The stream which will be read or written.</param>
+ /// <param name="mode">Indicates whether the ZlibStream will compress or decompress.</param>
+ public ZlibStream(System.IO.Stream stream, CompressionMode mode)
+ : this(stream, mode, CompressionLevel.Default, false)
+ {
+ }
+
+ /// <summary>
+ /// Create a <c>ZlibStream</c> using the specified <c>CompressionMode</c> and
+ /// the specified <c>CompressionLevel</c>.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// When mode is <c>CompressionMode.Decompress</c>, the level parameter is ignored.
+ /// The "captive" stream will be closed when the <c>ZlibStream</c> is closed.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ /// This example uses a <c>ZlibStream</c> to compress data from a file, and writes the
+ /// compressed data to another file.
+ ///
+ /// <code>
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
+ /// {
+ /// using (var raw = System.IO.File.Create(fileToCompress + ".zlib"))
+ /// {
+ /// using (Stream compressor = new ZlibStream(raw,
+ /// CompressionMode.Compress,
+ /// CompressionLevel.BestCompression))
+ /// {
+ /// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
+ /// int n;
+ /// while ((n= input.Read(buffer, 0, buffer.Length)) != 0)
+ /// {
+ /// compressor.Write(buffer, 0, n);
+ /// }
+ /// }
+ /// }
+ /// }
+ /// </code>
+ ///
+ /// <code lang="VB">
+ /// Using input As Stream = File.OpenRead(fileToCompress)
+ /// Using raw As FileStream = File.Create(fileToCompress & ".zlib")
+ /// Using compressor As Stream = New ZlibStream(raw, CompressionMode.Compress, CompressionLevel.BestCompression)
+ /// Dim buffer As Byte() = New Byte(4096) {}
+ /// Dim n As Integer = -1
+ /// Do While (n <> 0)
+ /// If (n > 0) Then
+ /// compressor.Write(buffer, 0, n)
+ /// End If
+ /// n = input.Read(buffer, 0, buffer.Length)
+ /// Loop
+ /// End Using
+ /// End Using
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="stream">The stream to be read or written while deflating or inflating.</param>
+ /// <param name="mode">Indicates whether the ZlibStream will compress or decompress.</param>
+ /// <param name="level">A tuning knob to trade speed for effectiveness.</param>
+ public ZlibStream(System.IO.Stream stream, CompressionMode mode, CompressionLevel level)
+ : this(stream, mode, level, false)
+ {
+ }
+
+ /// <summary>
+ /// Create a <c>ZlibStream</c> using the specified <c>CompressionMode</c>, and
+ /// explicitly specify whether the captive stream should be left open after
+ /// Deflation or Inflation.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// When mode is <c>CompressionMode.Compress</c>, the <c>ZlibStream</c> will use
+ /// the default compression level.
+ /// </para>
+ ///
+ /// <para>
+ /// This constructor allows the application to request that the captive stream
+ /// remain open after the deflation or inflation occurs. By default, after
+ /// <c>Close()</c> is called on the stream, the captive stream is also
+ /// closed. In some cases this is not desired, for example if the stream is a
+ /// <see cref="System.IO.MemoryStream"/> that will be re-read after
+ /// compression. Specify true for the <paramref name="leaveOpen"/> parameter to leave the stream
+ /// open.
+ /// </para>
+ ///
+ /// <para>
+ /// See the other overloads of this constructor for example code.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="stream">The stream which will be read or written. This is called the
+ /// "captive" stream in other places in this documentation.</param>
+ /// <param name="mode">Indicates whether the ZlibStream will compress or decompress.</param>
+ /// <param name="leaveOpen">true if the application would like the stream to remain
+ /// open after inflation/deflation.</param>
+ public ZlibStream(System.IO.Stream stream, CompressionMode mode, bool leaveOpen)
+ : this(stream, mode, CompressionLevel.Default, leaveOpen)
+ {
+ }
+
+ /// <summary>
+ /// Create a <c>ZlibStream</c> using the specified <c>CompressionMode</c>
+ /// and the specified <c>CompressionLevel</c>, and explicitly specify
+ /// whether the stream should be left open after Deflation or Inflation.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// This constructor allows the application to request that the captive
+ /// stream remain open after the deflation or inflation occurs. By
+ /// default, after <c>Close()</c> is called on the stream, the captive
+ /// stream is also closed. In some cases this is not desired, for example
+ /// if the stream is a <see cref="System.IO.MemoryStream"/> that will be
+ /// re-read after compression. Specify true for the <paramref
+ /// name="leaveOpen"/> parameter to leave the stream open.
+ /// </para>
+ ///
+ /// <para>
+ /// When mode is <c>CompressionMode.Decompress</c>, the level parameter is
+ /// ignored.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <example>
+ ///
+ /// This example shows how to use a ZlibStream to compress the data from a file,
+ /// and store the result into another file. The filestream remains open to allow
+ /// additional data to be written to it.
+ ///
+ /// <code>
+ /// using (var output = System.IO.File.Create(fileToCompress + ".zlib"))
+ /// {
+ /// using (System.IO.Stream input = System.IO.File.OpenRead(fileToCompress))
+ /// {
+ /// using (Stream compressor = new ZlibStream(output, CompressionMode.Compress, CompressionLevel.BestCompression, true))
+ /// {
+ /// byte[] buffer = new byte[WORKING_BUFFER_SIZE];
+ /// int n;
+ /// while ((n= input.Read(buffer, 0, buffer.Length)) != 0)
+ /// {
+ /// compressor.Write(buffer, 0, n);
+ /// }
+ /// }
+ /// }
+ /// // can write additional data to the output stream here
+ /// }
+ /// </code>
+ /// <code lang="VB">
+ /// Using output As FileStream = File.Create(fileToCompress & ".zlib")
+ /// Using input As Stream = File.OpenRead(fileToCompress)
+ /// Using compressor As Stream = New ZlibStream(output, CompressionMode.Compress, CompressionLevel.BestCompression, True)
+ /// Dim buffer As Byte() = New Byte(4096) {}
+ /// Dim n As Integer = -1
+ /// Do While (n <> 0)
+ /// If (n > 0) Then
+ /// compressor.Write(buffer, 0, n)
+ /// End If
+ /// n = input.Read(buffer, 0, buffer.Length)
+ /// Loop
+ /// End Using
+ /// End Using
+ /// ' can write additional data to the output stream here.
+ /// End Using
+ /// </code>
+ /// </example>
+ ///
+ /// <param name="stream">The stream which will be read or written.</param>
+ ///
+ /// <param name="mode">Indicates whether the ZlibStream will compress or decompress.</param>
+ ///
+ /// <param name="leaveOpen">
+ /// true if the application would like the stream to remain open after
+ /// inflation/deflation.
+ /// </param>
+ ///
+ /// <param name="level">
+ /// A tuning knob to trade speed for effectiveness. This parameter is
+ /// effective only when mode is <c>CompressionMode.Compress</c>.
+ /// </param>
+ public ZlibStream(System.IO.Stream stream, CompressionMode mode, CompressionLevel level, bool leaveOpen)
+ {
+ _baseStream = new ZlibBaseStream(stream, mode, level, ZlibStreamFlavor.ZLIB, leaveOpen);
+ }
+
+ #region Zlib properties
+
+ /// <summary>
+ /// This property sets the flush behavior on the stream.
+ /// Sorry, though, not sure exactly how to describe all the various settings.
+ /// </summary>
+ virtual public FlushType FlushMode
+ {
+ get { return (this._baseStream._flushMode); }
+ set
+ {
+ if (_disposed) throw new ObjectDisposedException("ZlibStream");
+ this._baseStream._flushMode = value;
+ }
+ }
+
+ /// <summary>
+ /// The size of the working buffer for the compression codec.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// <para>
+ /// The working buffer is used for all stream operations. The default size is
+ /// 1024 bytes. The minimum size is 128 bytes. You may get better performance
+ /// with a larger buffer. Then again, you might not. You would have to test
+ /// it.
+ /// </para>
+ ///
+ /// <para>
+ /// Set this before the first call to <c>Read()</c> or <c>Write()</c> on the
+ /// stream. If you try to set it afterwards, it will throw.
+ /// </para>
+ /// </remarks>
+ public int BufferSize
+ {
+ get
+ {
+ return this._baseStream._bufferSize;
+ }
+ set
+ {
+ if (_disposed) throw new ObjectDisposedException("ZlibStream");
+ if (this._baseStream._workingBuffer != null)
+ throw new ZlibException("The working buffer is already set.");
+ if (value < ZlibConstants.WorkingBufferSizeMin)
+ throw new ZlibException(String.Format("Don't be silly. {0} bytes?? Use a bigger buffer, at least {1}.", value, ZlibConstants.WorkingBufferSizeMin));
+ this._baseStream._bufferSize = value;
+ }
+ }
+
+ /// <summary> Returns the total number of bytes input so far.</summary>
+ virtual public long TotalIn
+ {
+ get { return this._baseStream._z.TotalBytesIn; }
+ }
+
+ /// <summary> Returns the total number of bytes output so far.</summary>
+ virtual public long TotalOut
+ {
+ get { return this._baseStream._z.TotalBytesOut; }
+ }
+
+ #endregion
+
+ #region System.IO.Stream methods
+
+ /// <summary>
+ /// Dispose the stream.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// This may or may not result in a <c>Close()</c> call on the captive
+ /// stream. See the constructors that have a <c>leaveOpen</c> parameter
+ /// for more information.
+ /// </para>
+ /// <para>
+ /// This method may be invoked in two distinct scenarios. If disposing
+ /// == true, the method has been called directly or indirectly by a
+ /// user's code, for example via the public Dispose() method. In this
+ /// case, both managed and unmanaged resources can be referenced and
+ /// disposed. If disposing == false, the method has been called by the
+ /// runtime from inside the object finalizer and this method should not
+ /// reference other objects; in that case only unmanaged resources must
+ /// be referenced or disposed.
+ /// </para>
+ /// </remarks>
+ /// <param name="disposing">
+ /// indicates whether the Dispose method was invoked by user code.
+ /// </param>
+ protected override void Dispose(bool disposing)
+ {
+ try
+ {
+ if (!_disposed)
+ {
+ if (disposing && (this._baseStream != null))
+ this._baseStream.Close();
+ _disposed = true;
+ }
+ }
+ finally
+ {
+ base.Dispose(disposing);
+ }
+ }
+
+
+ /// <summary>
+ /// Indicates whether the stream can be read.
+ /// </summary>
+ /// <remarks>
+ /// The return value depends on whether the captive stream supports reading.
+ /// </remarks>
+ public override bool CanRead
+ {
+ get
+ {
+ if (_disposed) throw new ObjectDisposedException("ZlibStream");
+ return _baseStream._stream.CanRead;
+ }
+ }
+
+ /// <summary>
+ /// Indicates whether the stream supports Seek operations.
+ /// </summary>
+ /// <remarks>
+ /// Always returns false.
+ /// </remarks>
+ public override bool CanSeek
+ {
+ get { return false; }
+ }
+
+ /// <summary>
+ /// Indicates whether the stream can be written.
+ /// </summary>
+ /// <remarks>
+ /// The return value depends on whether the captive stream supports writing.
+ /// </remarks>
+ public override bool CanWrite
+ {
+ get
+ {
+ if (_disposed) throw new ObjectDisposedException("ZlibStream");
+ return _baseStream._stream.CanWrite;
+ }
+ }
+
+ /// <summary>
+ /// Flush the stream.
+ /// </summary>
+ public override void Flush()
+ {
+ if (_disposed) throw new ObjectDisposedException("ZlibStream");
+ _baseStream.Flush();
+ }
+
+ /// <summary>
+ /// Reading this property always throws a <see cref="NotSupportedException"/>.
+ /// </summary>
+ public override long Length
+ {
+ get { throw new NotSupportedException(); }
+ }
+
+ /// <summary>
+ /// The position of the stream pointer.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Setting this property always throws a <see
+ /// cref="NotSupportedException"/>. Reading will return the total bytes
+ /// written out, if used in writing, or the total bytes read in, if used in
+ /// reading. The count may refer to compressed bytes or uncompressed bytes,
+ /// depending on how you've used the stream.
+ /// </remarks>
+ public override long Position
+ {
+ get
+ {
+ if (this._baseStream._streamMode == Ionic.Zlib.ZlibBaseStream.StreamMode.Writer)
+ return this._baseStream._z.TotalBytesOut;
+ if (this._baseStream._streamMode == Ionic.Zlib.ZlibBaseStream.StreamMode.Reader)
+ return this._baseStream._z.TotalBytesIn;
+ return 0;
+ }
+
+ set { throw new NotSupportedException(); }
+ }
+
+ /// <summary>
+ /// Read data from the stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// If you wish to use the <c>ZlibStream</c> to compress data while reading,
+ /// you can create a <c>ZlibStream</c> with <c>CompressionMode.Compress</c>,
+ /// providing an uncompressed data stream. Then call <c>Read()</c> on that
+ /// <c>ZlibStream</c>, and the data read will be compressed. If you wish to
+ /// use the <c>ZlibStream</c> to decompress data while reading, you can create
+ /// a <c>ZlibStream</c> with <c>CompressionMode.Decompress</c>, providing a
+ /// readable compressed data stream. Then call <c>Read()</c> on that
+ /// <c>ZlibStream</c>, and the data will be decompressed as it is read.
+ /// </para>
+ ///
+ /// <para>
+ /// A <c>ZlibStream</c> can be used for <c>Read()</c> or <c>Write()</c>, but
+ /// not both.
+ /// </para>
+ ///
+ /// </remarks>
+ ///
+ /// <param name="buffer">
+ /// The buffer into which the read data should be placed.</param>
+ ///
+ /// <param name="offset">
+ /// the offset within that data array to put the first byte read.</param>
+ ///
+ /// <param name="count">the number of bytes to read.</param>
+ ///
+ /// <returns>the number of bytes read</returns>
+ public override int Read(byte[] buffer, int offset, int count)
+ {
+ if (_disposed) throw new ObjectDisposedException("ZlibStream");
+ return _baseStream.Read(buffer, offset, count);
+ }
+
+ /// <summary>
+ /// Calling this method always throws a <see cref="NotSupportedException"/>.
+ /// </summary>
+ /// <param name="offset">
+ /// The offset to seek to....
+ /// IF THIS METHOD ACTUALLY DID ANYTHING.
+ /// </param>
+ /// <param name="origin">
+ /// The reference specifying how to apply the offset.... IF
+ /// THIS METHOD ACTUALLY DID ANYTHING.
+ /// </param>
+ ///
+ /// <returns>nothing. This method always throws.</returns>
+ public override long Seek(long offset, System.IO.SeekOrigin origin)
+ {
+ throw new NotSupportedException();
+ }
+
+ /// <summary>
+ /// Calling this method always throws a <see cref="NotSupportedException"/>.
+ /// </summary>
+ /// <param name="value">
+ /// The new value for the stream length.... IF
+ /// THIS METHOD ACTUALLY DID ANYTHING.
+ /// </param>
+ public override void SetLength(long value)
+ {
+ throw new NotSupportedException();
+ }
+
+ /// <summary>
+ /// Write data to the stream.
+ /// </summary>
+ ///
+ /// <remarks>
+ ///
+ /// <para>
+ /// If you wish to use the <c>ZlibStream</c> to compress data while writing,
+ /// you can create a <c>ZlibStream</c> with <c>CompressionMode.Compress</c>,
+ /// and a writable output stream. Then call <c>Write()</c> on that
+ /// <c>ZlibStream</c>, providing uncompressed data as input. The data sent to
+ /// the output stream will be the compressed form of the data written. If you
+ /// wish to use the <c>ZlibStream</c> to decompress data while writing, you
+ /// can create a <c>ZlibStream</c> with <c>CompressionMode.Decompress</c>, and a
+ /// writable output stream. Then call <c>Write()</c> on that stream,
+ /// providing previously compressed data. The data sent to the output stream
+ /// will be the decompressed form of the data written.
+ /// </para>
+ ///
+ /// <para>
+ /// A <c>ZlibStream</c> can be used for <c>Read()</c> or <c>Write()</c>, but not both.
+ /// </para>
+ /// </remarks>
+ /// <param name="buffer">The buffer holding data to write to the stream.</param>
+ /// <param name="offset">the offset within that data array to find the first byte to write.</param>
+ /// <param name="count">the number of bytes to write.</param>
+ public override void Write(byte[] buffer, int offset, int count)
+ {
+ if (_disposed) throw new ObjectDisposedException("ZlibStream");
+ _baseStream.Write(buffer, offset, count);
+ }
+ #endregion
+
+
+ /// <summary>
+ /// Compress a string into a byte array using ZLIB.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Uncompress it with <see cref="ZlibStream.UncompressString(byte[])"/>.
+ /// </remarks>
+ ///
+ /// <seealso cref="ZlibStream.UncompressString(byte[])"/>
+ /// <seealso cref="ZlibStream.CompressBuffer(byte[])"/>
+ /// <seealso cref="GZipStream.CompressString(string)"/>
+ ///
+ /// <param name="s">
+ /// A string to compress. The string will first be encoded
+ /// using UTF8, then compressed.
+ /// </param>
+ ///
+ /// <returns>The string in compressed form</returns>
+ internal static byte[] CompressString(String s)
+ {
+ using (var ms = new MemoryStream())
+ {
+ Stream compressor =
+ new ZlibStream(ms, CompressionMode.Compress, CompressionLevel.BestCompression);
+ ZlibBaseStream.CompressString(s, compressor);
+ return ms.ToArray();
+ }
+ }
+
+
+ /// <summary>
+ /// Compress a byte array into a new byte array using ZLIB.
+ /// </summary>
+ ///
+ /// <remarks>
+ /// Uncompress it with <see cref="ZlibStream.UncompressBuffer(byte[])"/>.
+ /// </remarks>
+ ///
+ /// <seealso cref="ZlibStream.CompressString(string)"/>
+ /// <seealso cref="ZlibStream.UncompressBuffer(byte[])"/>
+ ///
+ /// <param name="b">
+ /// A buffer to compress.
+ /// </param>
+ ///
+ /// <returns>The data in compressed form</returns>
+ internal static byte[] CompressBuffer(byte[] b)
+ {
+ using (var ms = new MemoryStream())
+ {
+ Stream compressor =
+ new ZlibStream( ms, CompressionMode.Compress, CompressionLevel.BestCompression );
+
+ ZlibBaseStream.CompressBuffer(b, compressor);
+ return ms.ToArray();
+ }
+ }
+
+
+ /// <summary>
+ /// Uncompress a ZLIB-compressed byte array into a single string.
+ /// </summary>
+ ///
+ /// <seealso cref="ZlibStream.CompressString(String)"/>
+ /// <seealso cref="ZlibStream.UncompressBuffer(byte[])"/>
+ ///
+ /// <param name="compressed">
+ /// A buffer containing ZLIB-compressed data.
+ /// </param>
+ ///
+ /// <returns>The uncompressed string</returns>
+ internal static String UncompressString(byte[] compressed)
+ {
+ using (var input = new MemoryStream(compressed))
+ {
+ Stream decompressor =
+ new ZlibStream(input, CompressionMode.Decompress);
+
+ return ZlibBaseStream.UncompressString(compressed, decompressor);
+ }
+ }
+
+
+ /// <summary>
+ /// Uncompress a ZLIB-compressed byte array into a byte array.
+ /// </summary>
+ ///
+ /// <seealso cref="ZlibStream.CompressBuffer(byte[])"/>
+ /// <seealso cref="ZlibStream.UncompressString(byte[])"/>
+ ///
+ /// <param name="compressed">
+ /// A buffer containing ZLIB-compressed data.
+ /// </param>
+ ///
+ /// <returns>The data in uncompressed form</returns>
+ internal static byte[] UncompressBuffer(byte[] compressed)
+ {
+ using (var input = new MemoryStream(compressed))
+ {
+ Stream decompressor =
+ new ZlibStream( input, CompressionMode.Decompress );
+
+ return ZlibBaseStream.UncompressBuffer(compressed, decompressor);
+ }
+ }
+
+ }
+
+
+}
\ No newline at end of file
include ../../build/rules.make
LIBRARY = System.IO.Compression.dll
-LIB_MCS_FLAGS = /r:System
-
-NO_TEST = yes
+LIB_MCS_FLAGS = /r:System /r:System.Core /nowarn:219
+TEST_MCS_FLAGS = /r:System /r:System.Core
include ../../build/library.make
+
AssemblyInfo.cs
TypeForwarders.cs
ZipArchive.cs
ZipArchiveEntry.cs
ZipArchiveMode.cs
../../build/common/Consts.cs
-../../build/common/MonoTODOAttribute.cs
\ No newline at end of file
+../../build/common/MonoTODOAttribute.cs
+Ionic/Common/CRC32.cs
+Ionic/Common/Iso8859Dash1Encoding.cs
+Ionic/Zip/EncryptionAlgorithm.cs
+Ionic/Zip/Events.cs
+Ionic/Zip/Exceptions.cs
+Ionic/Zip/ExtractExistingFileAction.cs
+Ionic/Zip/FileSelector.cs
+Ionic/Zip/OffsetStream.cs
+Ionic/Zip/Shared.cs
+Ionic/Zip/ZipConstants.cs
+Ionic/Zip/ZipCrypto.cs
+Ionic/Zip/ZipDirEntry.cs
+Ionic/Zip/ZipEntry.cs
+Ionic/Zip/ZipEntry.Extract.cs
+Ionic/Zip/ZipEntry.Read.cs
+Ionic/Zip/ZipEntry.Write.cs
+Ionic/Zip/ZipEntrySource.cs
+Ionic/Zip/ZipErrorAction.cs
+Ionic/Zip/ZipFile.AddUpdate.cs
+Ionic/Zip/ZipFile.Check.cs
+Ionic/Zip/ZipFile.cs
+Ionic/Zip/ZipFile.Events.cs
+Ionic/Zip/ZipFile.Extract.cs
+Ionic/Zip/ZipFile.Read.cs
+Ionic/Zip/ZipFile.Save.cs
+Ionic/Zip/ZipFile.SaveSelfExtractor.cs
+Ionic/Zip/ZipFile.Selector.cs
+Ionic/Zip/ZipFile.x-IEnumerable.cs
+Ionic/Zip/ZipInputStream.cs
+Ionic/Zip/ZipOutputStream.cs
+Ionic/Zip/ZipSegmentedStream.cs
+Ionic/Zlib/Deflate.cs
+Ionic/Zlib/DeflateStream.cs
+Ionic/Zlib/GZipStream.cs
+Ionic/Zlib/Inflate.cs
+Ionic/Zlib/InfTree.cs
+Ionic/Zlib/ParallelDeflateOutputStream.cs
+Ionic/Zlib/Tree.cs
+Ionic/Zlib/Zlib.cs
+Ionic/Zlib/ZlibBaseStream.cs
+Ionic/Zlib/ZlibCodec.cs
+Ionic/Zlib/ZlibConstants.cs
+Ionic/Zlib/ZlibStream.cs
--- /dev/null
+System.IO.Compression/ZipTest.cs
--- /dev/null
+//
+// ZipTests.cs
+//
+// Author:
+// Joao Matos <joao.matos@xamarin.com>
+//
+// Copyright (c) 2013 Xamarin Inc. (http://www.xamarin.com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+using System;
+using System.IO;
+using System.IO.Compression;
+using System.Linq;
+using System.Security.Cryptography;
+using NUnit.Framework;
+
+namespace MonoTests.System.IO.Compression
+{
+ [TestFixture]
+ public class ZipArchiveTests
+ {
+ static string GetSHA1HashFromFile(Stream stream)
+ {
+ using (var sha1 = SHA1.Create())
+ {
+ return BitConverter.ToString(sha1.ComputeHash(stream))
+ .Replace("-", string.Empty);
+ }
+ }
+
+ [Test]
+ public void ZipGetEntryReadMode()
+ {
+ File.Copy("archive.zip", "test.zip", overwrite: true);
+ using (var archive = new ZipArchive(File.Open("test.zip", FileMode.Open),
+ ZipArchiveMode.Read))
+ {
+ var entry = archive.GetEntry("foo.txt");
+ Assert.IsNotNull(entry);
+
+ var nullEntry = archive.GetEntry("nonexisting");
+ Assert.IsNull(nullEntry);
+ }
+ }
+
+ [Test]
+ public void ZipGetEntryCreateMode()
+ {
+ File.Copy("archive.zip", "test.zip", overwrite: true);
+ using (var archive = new ZipArchive(File.Open("test.zip", FileMode.Open),
+ ZipArchiveMode.Create))
+ {
+ try {
+ archive.GetEntry("foo");
+ } catch(NotSupportedException ex) {
+ return;
+ }
+
+ Assert.Fail();
+ }
+ }
+
+ [Test]
+ public void ZipGetEntryUpdateMode()
+ {
+ File.Copy("archive.zip", "test.zip", overwrite: true);
+ using (var archive = new ZipArchive(File.Open("test.zip", FileMode.Open),
+ ZipArchiveMode.Read))
+ {
+ var entry = archive.GetEntry("foo.txt");
+ Assert.IsNotNull(entry);
+
+ var nullEntry = archive.GetEntry("nonexisting");
+ Assert.IsNull(nullEntry);
+ }
+ }
+
+ [Test]
+ public void ZipGetEntryOpen()
+ {
+ File.Copy("archive.zip", "test.zip", overwrite: true);
+ using (var archive = new ZipArchive(File.Open("test.zip", FileMode.Open),
+ ZipArchiveMode.Read))
+ {
+ var entry = archive.GetEntry("foo.txt");
+ Assert.IsNotNull(entry);
+
+ var foo = entry.Open();
+ Assert.AreEqual("F1D2D2F924E986AC86FDF7B36C94BCDF32BEEC15",
+ GetSHA1HashFromFile(foo));
+ }
+ }
+
+ [Test]
+ public void ZipGetEntryDeleteReadMode()
+ {
+ File.Copy("archive.zip", "delete.zip", overwrite: true);
+ using (var archive = new ZipArchive(File.Open("delete.zip", FileMode.Open),
+ ZipArchiveMode.Update))
+ {
+ var entry = archive.GetEntry("foo.txt");
+ Assert.IsNotNull(entry);
+
+ entry.Delete();
+ }
+
+ using (var archive = new ZipArchive(File.Open("delete.zip", FileMode.Open),
+ ZipArchiveMode.Read))
+ {
+ var entry = archive.GetEntry("foo.txt");
+ Assert.IsNull(entry);
+ }
+ }
+
+ [Test]
+ public void ZipGetEntryDeleteUpdateMode()
+ {
+ File.Copy("archive.zip", "delete.zip", overwrite: true);
+ using (var archive = new ZipArchive(File.Open("delete.zip", FileMode.Open),
+ ZipArchiveMode.Update))
+ {
+ var entry = archive.GetEntry("foo.txt");
+ Assert.IsNotNull(entry);
+
+ entry.Delete();
+ }
+
+ using (var archive = new ZipArchive(File.Open("delete.zip", FileMode.Open),
+ ZipArchiveMode.Read))
+ {
+ var entry = archive.GetEntry("foo.txt");
+ Assert.IsNull(entry);
+ }
+ }
+
+ [Test]
+ public void ZipCreateArchive()
+ {
+ using (var archive = new ZipArchive(File.Open("create.zip", FileMode.Create),
+ ZipArchiveMode.Create))
+ {
+ var entry = archive.CreateEntry("foo.txt");
+ using (var stream = entry.Open())
+ {
+ }
+ }
+
+ using (var archive = new ZipArchive(File.Open("create.zip", FileMode.Open),
+ ZipArchiveMode.Read))
+ {
+ var entry = archive.GetEntry("foo.txt");
+ Assert.IsNotNull(entry);
+ }
+ }
+
+ [Test]
+ public void ZipEnumerateEntriesReadMode()
+ {
+ File.Copy("archive.zip", "test.zip", overwrite: true);
+ using (var archive = new ZipArchive(File.Open("test.zip", FileMode.Open),
+ ZipArchiveMode.Read))
+ {
+ var entries = archive.Entries;
+ Assert.AreEqual(5, entries.Count);
+
+ Assert.AreEqual("bar.txt", entries[0].FullName);
+ Assert.AreEqual("foo.txt", entries[1].FullName);
+ Assert.AreEqual("foobar/", entries[2].FullName);
+ Assert.AreEqual("foobar/bar.txt", entries[3].FullName);
+ Assert.AreEqual("foobar/foo.txt", entries[4].FullName);
+ }
+ }
+
+ [Test]
+ public void ZipEnumerateEntriesUpdateMode()
+ {
+ File.Copy("archive.zip", "test.zip", overwrite: true);
+ using (var archive = new ZipArchive(File.Open("test.zip", FileMode.Open),
+ ZipArchiveMode.Read))
+ {
+ var entries = archive.Entries;
+ Assert.AreEqual(5, entries.Count);
+
+ Assert.AreEqual("bar.txt", entries[0].FullName);
+ Assert.AreEqual("foo.txt", entries[1].FullName);
+ Assert.AreEqual("foobar/", entries[2].FullName);
+ Assert.AreEqual("foobar/bar.txt", entries[3].FullName);
+ Assert.AreEqual("foobar/foo.txt", entries[4].FullName);
+ }
+ }
+
+ [Test]
+ public void ZipEnumerateEntriesCreateMode()
+ {
+ File.Copy("archive.zip", "test.zip", overwrite: true);
+ using (var archive = new ZipArchive(File.Open("test.zip", FileMode.Open),
+ ZipArchiveMode.Create))
+ {
+ try {
+ archive.Entries.ToList();
+ } catch(NotSupportedException ex) {
+ return;
+ }
+
+ Assert.Fail();
+ }
+ }
+ }
+}
// ZipArchive.cs
//
// Author:
-// Martin Baulig <martin.baulig@xamarin.com>
+// Martin Baulig <martin.baulig@xamarin.com>
+// Joao Matos <joao.matos@xamarin.com>
//
// Copyright (c) 2013 Xamarin Inc. (http://www.xamarin.com)
//
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
-using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
+using System.Linq;
using System.Text;
+using Ionic.Zip;
namespace System.IO.Compression
{
- [MonoTODO]
public class ZipArchive : IDisposable
{
+ internal Stream stream;
+ internal readonly bool leaveStreamOpen;
+ internal readonly ZipArchiveMode mode;
+ internal Encoding entryNameEncoding;
+ internal bool disposed;
+ internal Dictionary<string, ZipArchiveEntry> entries;
+ internal ZipFile zipFile;
+
public ZipArchive (Stream stream)
{
- throw new NotImplementedException ();
+ if (stream == null)
+ throw new ArgumentNullException("stream");
+
+ this.stream = stream;
+ mode = ZipArchiveMode.Read;
+ CreateZip(stream, mode);
}
public ZipArchive (Stream stream, ZipArchiveMode mode)
- : this (stream)
{
+ if (stream == null)
+ throw new ArgumentNullException("stream");
+
+ this.stream = stream;
+ this.mode = mode;
+ CreateZip(stream, mode);
}
- public ZipArchive (Stream stream, ZipArchiveMode mode,
- bool leaveOpen)
- : this (stream, mode)
+ public ZipArchive (Stream stream, ZipArchiveMode mode, bool leaveOpen)
{
+ if (stream == null)
+ throw new ArgumentNullException("stream");
+
+ this.stream = stream;
+ this.mode = mode;
+ this.leaveStreamOpen = leaveOpen;
+ CreateZip(stream, mode);
}
- public ZipArchive (Stream stream, ZipArchiveMode mode,
- bool leaveOpen, Encoding entryNameEncoding)
- : this (stream, mode, leaveOpen)
+ public ZipArchive (Stream stream, ZipArchiveMode mode, bool leaveOpen, Encoding entryNameEncoding)
{
+ if (stream == null)
+ throw new ArgumentNullException("stream");
+
+ this.stream = stream;
+ this.mode = mode;
+ this.leaveStreamOpen = leaveOpen;
+ this.entryNameEncoding = entryNameEncoding;
+ CreateZip(stream, mode);
+ }
+
+ private void CreateZip(Stream stream, ZipArchiveMode mode)
+ {
+ if (mode != ZipArchiveMode.Read && mode != ZipArchiveMode.Create && mode != ZipArchiveMode.Update)
+ throw new ArgumentOutOfRangeException("mode");
+
+ // If the mode parameter is set to Read, the stream must support reading.
+ if (mode == ZipArchiveMode.Read && !stream.CanRead)
+ throw new ArgumentException("Stream must support reading for Read archive mode");
+
+ // If the mode parameter is set to Create, the stream must support writing.
+ if (mode == ZipArchiveMode.Create && !stream.CanWrite)
+ throw new ArgumentException("Stream must support writing for Create archive mode");
+
+ // If the mode parameter is set to Update, the stream must support reading, writing, and seeking.
+ if (mode == ZipArchiveMode.Update && (!stream.CanRead || !stream.CanWrite || !stream.CanSeek))
+ throw new ArgumentException("Stream must support reading, writing and seeking for Update archive mode");
+
+ try {
+ zipFile = new ZipFile(stream, (mode != ZipArchiveMode.Read) ? stream : null, leaveStreamOpen,
+ entryNameEncoding);
+
+ if (stream.Length != 0) {
+ zipFile.FullScan = true;
+ zipFile.ReadToInstance();
+ }
+
+ if (mode == ZipArchiveMode.Create)
+ zipFile.Save();
+ } catch (Exception) {
+ throw new InvalidDataException("The contents of the stream are not in the zip archive format.");
+ }
+
+ entries = new Dictionary<string, ZipArchiveEntry>();
+ if (Mode != ZipArchiveMode.Create) {
+ foreach (var entry in zipFile.Entries) {
+ var zipEntry = new ZipArchiveEntry(this, entry);
+ entries[entry.FileName] = zipEntry;
+ }
+ }
}
public ReadOnlyCollection<ZipArchiveEntry> Entries {
get {
- throw new NotImplementedException ();
+ if (disposed)
+ throw new ObjectDisposedException("The zip archive has been disposed.");
+
+ if (Mode == ZipArchiveMode.Create)
+ throw new NotSupportedException("Cannot access entries in Create mode.");
+
+ if (zipFile == null)
+ throw new InvalidDataException("The zip archive is corrupt, and its entries cannot be retrieved.");
+
+ if (entries == null)
+ return new ReadOnlyCollection<ZipArchiveEntry>(new List<ZipArchiveEntry>());
+
+ return new ReadOnlyCollection<ZipArchiveEntry>(entries.Values.ToList());
}
}
public ZipArchiveMode Mode {
get {
- throw new NotImplementedException ();
+ if (disposed)
+ throw new ObjectDisposedException("The zip archive has been disposed.");
+
+ return mode;
}
}
public ZipArchiveEntry CreateEntry (string entryName)
{
- throw new NotImplementedException ();
+ if (disposed)
+ throw new ObjectDisposedException("The zip archive has been disposed.");
+
+ return CreateEntry(entryName, CompressionLevel.Optimal);
}
public ZipArchiveEntry CreateEntry (string entryName,
- CompressionLevel compressionLevel)
+ CompressionLevel compressionLevel)
{
- throw new NotImplementedException ();
+ if (disposed)
+ throw new ObjectDisposedException("The zip archive has been disposed.");
+
+ if (entryName == string.Empty)
+ throw new ArgumentException("Entry name cannot be empty.");
+
+ if (entryName == null)
+ throw new ArgumentNullException("entryName");
+
+ if (mode != ZipArchiveMode.Create && mode != ZipArchiveMode.Update)
+ throw new NotSupportedException("The zip archive does not support writing.");
+
+ if (zipFile == null)
+ throw new InvalidDataException("The zip archive is corrupt, and its entries cannot be retrieved.");
+
+ var memoryStream = new MemoryStream();
+ var entry = zipFile.AddEntry(entryName, memoryStream);
+ var archiveEntry = new ZipArchiveEntry(this, entry);
+ entries[entryName] = archiveEntry;
+
+ return archiveEntry;
}
public ZipArchiveEntry GetEntry (string entryName)
{
- throw new NotImplementedException ();
+ if (disposed)
+ throw new ObjectDisposedException("The zip archive has been disposed.");
+
+ if (entryName == string.Empty)
+ throw new ArgumentException("Entry name cannot be empty.");
+
+ if (entryName == null)
+ throw new ArgumentNullException("entryName");
+
+ if (mode != ZipArchiveMode.Read && mode != ZipArchiveMode.Update)
+ throw new NotSupportedException("The zip archive does not support reading.");
+
+ if (zipFile == null)
+ throw new InvalidDataException("The zip archive is corrupt, and its entries cannot be retrieved.");
+
+ return entries.ContainsKey(entryName) ? entries[entryName] : null;
+ }
+
+ private void Save()
+ {
+ // We save to a memory stream first because Ionic does not deal well
+ // with saving to a file that has previously been open before.
+ using (var newZip = new MemoryStream()) {
+ zipFile.Save(newZip);
+
+ stream.Position = 0;
+ newZip.Position = 0;
+ newZip.CopyTo(stream);
+ }
}
protected virtual void Dispose (bool disposing)
{
- throw new NotImplementedException ();
+ if (disposed)
+ return;
+
+ if (mode != ZipArchiveMode.Read)
+ Save();
+
+ disposed = true;
+
+ if (leaveStreamOpen)
+ return;
+
+ if (stream != null) {
+ stream.Dispose();
+ stream = null;
+ }
}
public void Dispose ()
{
- throw new NotImplementedException ();
+ Dispose(true);
+ GC.SuppressFinalize(this);
}
}
}
// ZipArchiveEntry.cs
//
// Author:
-// Martin Baulig <martin.baulig@xamarin.com>
+// Joao Matos <joao.matos@xamarin.com>
+// Martin Baulig <martin.baulig@xamarin.com>
//
// Copyright (c) 2013 Xamarin Inc. (http://www.xamarin.com)
//
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
-using System;
namespace System.IO.Compression
{
- [MonoTODO]
public class ZipArchiveEntry
{
+ readonly Ionic.Zip.ZipEntry entry;
+ private Stream openStream;
+ private bool wasDeleted;
+
+ internal ZipArchiveEntry(ZipArchive archive, Ionic.Zip.ZipEntry entry)
+ {
+ if (archive == null)
+ throw new ArgumentNullException("archive");
+
+ if (entry == null)
+ throw new ArgumentNullException("entry");
+
+ this.Archive = archive;
+ this.entry = entry;
+ }
+
public ZipArchive Archive {
get;
private set;
}
public long CompressedLength {
- get;
- private set;
+ get {
+ if (Archive.Mode == ZipArchiveMode.Create)
+ throw new InvalidOperationException("Property cannot be retrieved when the mode is set to Create");
+
+ return entry.CompressedSize;
+ }
}
public string FullName {
- get;
- private set;
+ get { return entry.FileName; }
}
public DateTimeOffset LastWriteTime {
- get; set;
+ get { return entry.LastModified; }
+ set { entry.LastModified = value.DateTime; }
}
public long Length {
- get;
- private set;
+ get {
+ if (Archive.Mode == ZipArchiveMode.Create)
+ throw new InvalidOperationException("Property cannot be retrieved when the mode is set to Create");
+
+ return entry.UncompressedSize;
+ }
}
public string Name {
- get;
- private set;
+ get { return Path.GetFileName(entry.FileName); }
}
public void Delete ()
{
- throw new NotImplementedException ();
+ if (Archive.disposed)
+ throw new ObjectDisposedException("The zip archive for this entry has been disposed.");
+
+ if (Archive.Mode != ZipArchiveMode.Update)
+ throw new NotSupportedException("The zip archive for this entry was opened in a mode other than Update.");
+
+ if (openStream != null)
+ throw new IOException("The entry is already open for reading or writing.");
+
+ wasDeleted = true;
+ Archive.zipFile.RemoveEntry(entry.FileName);
}
public Stream Open ()
{
- throw new NotImplementedException ();
+ if (Archive.disposed)
+ throw new ObjectDisposedException("The zip archive for this entry has been disposed.");
+
+ if (openStream != null && Archive.Mode == ZipArchiveMode.Update)
+ throw new IOException("The entry is already currently open for writing.");
+
+ if (wasDeleted)
+ throw new IOException("The entry has been deleted from the archive.");
+
+ if (Archive.Mode == ZipArchiveMode.Create && openStream != null)
+ throw new IOException("The archive for this entry was opened with the Create mode, and this entry has already been written to.");
+
+ var memoryStream = new MemoryStream();
+ openStream = memoryStream;
+
+ if (Archive.Mode == ZipArchiveMode.Read || Archive.Mode == ZipArchiveMode.Update)
+ entry.Extract(memoryStream);
+
+ memoryStream.Seek(0, SeekOrigin.Begin);
+
+ return memoryStream;
}
}
}
XmlElement element = CreateElement (reader.Prefix, reader.LocalName, reader.NamespaceURI, reader.NameTable == this.NameTable);
#if NET_2_0
if (reader.SchemaInfo != null)
- SchemaInfo = reader.SchemaInfo;
+ element.SchemaInfo = reader.SchemaInfo;
#endif
element.IsEmpty = reader.IsEmptyElement;
if (webHeaders == null)
return;
- //
- // Don't terminate response reading on bad cookie value
- //
- string value;
- try {
- value = webHeaders.Get ("Set-Cookie");
- if (value != null && SetCookie (value))
- return;
- } catch {
+ string value = webHeaders.Get ("Set-Cookie");
+ if (value != null) {
+ SetCookie (value);
}
- try {
- value = webHeaders.Get ("Set-Cookie2");
- if (value != null)
- SetCookie (value);
- } catch {
+ value = webHeaders.Get ("Set-Cookie2");
+ if (value != null) {
+ SetCookie (value);
}
}
- bool SetCookie (string header)
+ void SetCookie (string header)
{
if (cookieCollection == null)
cookieCollection = new CookieCollection ();
- bool at_least_one_set = false;
var parser = new CookieParser (header);
foreach (var cookie in parser.Parse ()) {
if (cookie.Domain == "") {
continue;
cookieCollection.Add (cookie);
- if (cookie_container != null) {
+ if (cookie_container != null)
cookie_container.Add (uri, cookie);
- at_least_one_set = true;
- }
}
-
- return at_least_one_set;
}
}
}
-DIST_SUBDIRS = x86 ppc sparc arm arm64 s390x amd64 ia64 mips
+DIST_SUBDIRS = x86 ppc sparc arm s390x amd64 ia64 mips
AM_CPPFLAGS = $(GLIB_CFLAGS) -I$(top_srcdir)
+++ /dev/null
-#include "../../../../mono-extensions/mono/arch/arm64/arm64-codegen.h"
-
-
sgen-protocol.c \
sgen-bridge.c \
sgen-bridge.h \
+ sgen-old-bridge.c \
+ sgen-new-bridge.c \
sgen-toggleref.c \
sgen-toggleref.h \
sgen-gc.h \
#elif defined(__arm__)
#define CONFIG_CPU "arm"
#define CONFIG_WORDSIZE "32"
-#elif defined(__aarch64__)
-#define CONFIG_CPU "armv8"
-#define CONFIG_WORDSIZE "64"
#elif defined(__ia64__)
#define CONFIG_CPU "ia64"
#define CONFIG_WORDSIZE "64"
((a)[13]) = (gpointer) (UCONTEXT_REG_LR((ctx))); \
} while (0)
-#elif defined(TARGET_ARM64)
-
-#include <mono/utils/mono-sigcontext.h>
-
-#ifdef __linux__
-#define REDZONE_SIZE 0
-#elif defined(__APPLE__)
-#define REDZONE_SIZE 128
-#else
-#error "Not implemented."
-#endif
-#define USE_MONO_CTX
-#define ARCH_NUM_REGS 31
-
-#define ARCH_STORE_REGS(ptr) do { g_assert_not_reached (); } while (0)
-
-#define ARCH_SIGCTX_SP(ctx) UCONTEXT_REG_SP (ctx)
-#define ARCH_SIGCTX_IP(ctx) UCONTEXT_REG_PC (ctx)
-#define ARCH_COPY_SIGCTX_REGS(a,ctx) do { g_assert_not_reached (); } while (0)
-
#elif defined(__mips__)
#define REDZONE_SIZE 0
#include "utils/mono-time.h"
#include "utils/mono-compiler.h"
-
-typedef struct {
- int size;
- int capacity;
- char *data;
-} DynArray;
-
-/*Specializations*/
-
-typedef struct {
- DynArray array;
-} DynIntArray;
-
-typedef struct {
- DynArray array;
-} DynPtrArray;
-
-typedef struct {
- DynArray array;
-} DynSCCArray;
-
-
-/*
- * FIXME: Optimizations:
- *
- * Don't allocate a scrs array for just one source. Most objects have
- * just one source, so use the srcs pointer itself.
- */
-typedef struct _HashEntry {
- MonoObject *obj; /* This is a duplicate - it's already stored in the hash table */
-
- gboolean is_bridge;
- gboolean is_visited;
-
- int finishing_time;
-
- DynPtrArray srcs;
-
- int scc_index;
-} HashEntry;
-
-typedef struct {
- HashEntry entry;
- double weight;
-} HashEntryWithAccounting;
-
-typedef struct _SCC {
- int index;
- int api_index;
- int num_bridge_entries;
- DynIntArray xrefs; /* these are incoming, not outgoing */
-} SCC;
-
-static SgenHashTable hash_table = SGEN_HASH_TABLE_INIT (INTERNAL_MEM_BRIDGE_HASH_TABLE, INTERNAL_MEM_BRIDGE_HASH_TABLE_ENTRY, sizeof (HashEntry), mono_aligned_addr_hash, NULL);
-
-static MonoGCBridgeCallbacks bridge_callbacks;
-
-static int current_time;
+MonoGCBridgeCallbacks bridge_callbacks;
+static SgenBridgeProcessor bridge_processor;
gboolean bridge_processing_in_progress = FALSE;
-static gboolean bridge_accounting_enabled = FALSE;
-
-
-/* Core functions */
-/* public */
-
-/* private */
-
-static void
-dyn_array_init (DynArray *da)
-{
- da->size = 0;
- da->capacity = 0;
- da->data = NULL;
-}
-
-static void
-dyn_array_uninit (DynArray *da, int elem_size)
-{
- if (da->capacity <= 0)
- return;
-
- sgen_free_internal_dynamic (da->data, elem_size * da->capacity, INTERNAL_MEM_BRIDGE_DATA);
- da->data = NULL;
-}
-
-static void
-dyn_array_ensure_capacity (DynArray *da, int capacity, int elem_size)
-{
- int old_capacity = da->capacity;
- char *new_data;
-
- if (capacity <= old_capacity)
- return;
-
- if (da->capacity == 0)
- da->capacity = 2;
- while (capacity > da->capacity)
- da->capacity *= 2;
-
- new_data = sgen_alloc_internal_dynamic (elem_size * da->capacity, INTERNAL_MEM_BRIDGE_DATA, TRUE);
- memcpy (new_data, da->data, elem_size * da->size);
- sgen_free_internal_dynamic (da->data, elem_size * old_capacity, INTERNAL_MEM_BRIDGE_DATA);
- da->data = new_data;
-}
-
-static void*
-dyn_array_add (DynArray *da, int elem_size)
-{
- void *p;
-
- dyn_array_ensure_capacity (da, da->size + 1, elem_size);
-
- p = da->data + da->size * elem_size;
- ++da->size;
- return p;
-}
-
-/* int */
-static void
-dyn_array_int_init (DynIntArray *da)
-{
- dyn_array_init (&da->array);
-}
-
-static void
-dyn_array_int_uninit (DynIntArray *da)
-{
- dyn_array_uninit (&da->array, sizeof (int));
-}
-
-static int
-dyn_array_int_size (DynIntArray *da)
-{
- return da->array.size;
-}
-
-static void
-dyn_array_int_set_size (DynIntArray *da, int size)
-{
- da->array.size = size;
-}
-
-static void
-dyn_array_int_add (DynIntArray *da, int x)
-{
- int *p = dyn_array_add (&da->array, sizeof (int));
- *p = x;
-}
-
-static int
-dyn_array_int_get (DynIntArray *da, int x)
-{
- return ((int*)da->array.data)[x];
-}
-
-static void
-dyn_array_int_set (DynIntArray *da, int idx, int val)
-{
- ((int*)da->array.data)[idx] = val;
-}
-
-static void
-dyn_array_int_ensure_capacity (DynIntArray *da, int capacity)
-{
- dyn_array_ensure_capacity (&da->array, capacity, sizeof (int));
-}
-
-static void
-dyn_array_int_set_all (DynIntArray *dst, DynIntArray *src)
-{
- dyn_array_int_ensure_capacity (dst, src->array.size);
- memcpy (dst->array.data, src->array.data, src->array.size * sizeof (int));
- dst->array.size = src->array.size;
-}
-
-/* ptr */
-
-static void
-dyn_array_ptr_init (DynPtrArray *da)
-{
- dyn_array_init (&da->array);
-}
-
-static void
-dyn_array_ptr_uninit (DynPtrArray *da)
-{
- dyn_array_uninit (&da->array, sizeof (void*));
-}
-
-static int
-dyn_array_ptr_size (DynPtrArray *da)
-{
- return da->array.size;
-}
-
-static void
-dyn_array_ptr_set_size (DynPtrArray *da, int size)
-{
- da->array.size = size;
-}
-
-static void*
-dyn_array_ptr_get (DynPtrArray *da, int x)
-{
- return ((void**)da->array.data)[x];
-}
-
-static void
-dyn_array_ptr_add (DynPtrArray *da, void *ptr)
-{
- void **p = dyn_array_add (&da->array, sizeof (void*));
- *p = ptr;
-}
-
-#define dyn_array_ptr_push dyn_array_ptr_add
-
-static void*
-dyn_array_ptr_pop (DynPtrArray *da)
-{
- void *p;
- int size = da->array.size;
- g_assert (size > 0);
- p = dyn_array_ptr_get (da, size - 1);
- --da->array.size;
- return p;
-}
-
-/*SCC */
-
-static void
-dyn_array_scc_init (DynSCCArray *da)
-{
- dyn_array_init (&da->array);
-}
-
-static void
-dyn_array_scc_uninit (DynSCCArray *da)
-{
- dyn_array_uninit (&da->array, sizeof (SCC));
-}
-
-static int
-dyn_array_scc_size (DynSCCArray *da)
-{
- return da->array.size;
-}
-
-static SCC*
-dyn_array_scc_add (DynSCCArray *da)
-{
- return dyn_array_add (&da->array, sizeof (SCC));
-}
-
-static SCC*
-dyn_array_scc_get_ptr (DynSCCArray *da, int x)
-{
- return &((SCC*)da->array.data)[x];
-}
-
-/* Merge code*/
-
-static DynIntArray merge_array;
-
-static gboolean
-dyn_array_int_contains (DynIntArray *da, int x)
-{
- int i;
- for (i = 0; i < dyn_array_int_size (da); ++i)
- if (dyn_array_int_get (da, i) == x)
- return TRUE;
- return FALSE;
-}
-
-
-static void
-dyn_array_int_merge (DynIntArray *dst, DynIntArray *src)
-{
- int i, j;
-
- dyn_array_int_ensure_capacity (&merge_array, dyn_array_int_size (dst) + dyn_array_int_size (src));
- dyn_array_int_set_size (&merge_array, 0);
-
- for (i = j = 0; i < dyn_array_int_size (dst) || j < dyn_array_int_size (src); ) {
- if (i < dyn_array_int_size (dst) && j < dyn_array_int_size (src)) {
- int a = dyn_array_int_get (dst, i);
- int b = dyn_array_int_get (src, j);
- if (a < b) {
- dyn_array_int_add (&merge_array, a);
- ++i;
- } else if (a == b) {
- dyn_array_int_add (&merge_array, a);
- ++i;
- ++j;
- } else {
- dyn_array_int_add (&merge_array, b);
- ++j;
- }
- } else if (i < dyn_array_int_size (dst)) {
- dyn_array_int_add (&merge_array, dyn_array_int_get (dst, i));
- ++i;
- } else {
- dyn_array_int_add (&merge_array, dyn_array_int_get (src, j));
- ++j;
- }
- }
-
- if (dyn_array_int_size (&merge_array) > dyn_array_int_size (dst)) {
- dyn_array_int_set_all (dst, &merge_array);
- }
-}
-
-static void
-dyn_array_int_merge_one (DynIntArray *array, int value)
-{
- int i;
- int tmp;
- int size = dyn_array_int_size (array);
-
- for (i = 0; i < size; ++i) {
- if (dyn_array_int_get (array, i) == value)
- return;
- else if (dyn_array_int_get (array, i) > value)
- break;
- }
-
- dyn_array_int_ensure_capacity (array, size + 1);
-
- if (i < size) {
- tmp = dyn_array_int_get (array, i);
- for (; i < size; ++i) {
- dyn_array_int_set (array, i, value);
- value = tmp;
- tmp = dyn_array_int_get (array, i + 1);
- }
- dyn_array_int_set (array, size, value);
- } else {
- dyn_array_int_set (array, size, value);
- }
-
- dyn_array_int_set_size (array, size + 1);
-}
-
void
mono_gc_wait_for_bridge_processing (void)
{
sgen_gc_unlock ();
}
-void
-sgen_enable_bridge_accounting (void)
-{
- bridge_accounting_enabled = TRUE;
- hash_table = (SgenHashTable)SGEN_HASH_TABLE_INIT (INTERNAL_MEM_BRIDGE_HASH_TABLE, INTERNAL_MEM_BRIDGE_HASH_TABLE_ENTRY, sizeof (HashEntryWithAccounting), mono_aligned_addr_hash, NULL);
-}
void
mono_gc_register_bridge_callbacks (MonoGCBridgeCallbacks *callbacks)
g_error ("Invalid bridge callback version. Expected %d but got %d\n", SGEN_BRIDGE_VERSION, callbacks->bridge_version);
bridge_callbacks = *callbacks;
+
+ if (!bridge_processor.reset_data)
+ sgen_old_bridge_init (&bridge_processor);
+}
+
+void
+sgen_set_bridge_implementation (const char *name)
+{
+ if (!strcmp ("old", name))
+ sgen_old_bridge_init (&bridge_processor);
+ else if (!strcmp ("new", name))
+ sgen_new_bridge_init (&bridge_processor);
+ else
+ g_warning ("Invalid value for bridge implementation, valid values are: 'new' and 'old'.");
}
gboolean
return bridge_callbacks.is_bridge_object (obj);
}
-MonoGCBridgeObjectKind
-sgen_bridge_class_kind (MonoClass *class)
-{
- return bridge_callbacks.bridge_class_kind (class);
-}
-
gboolean
sgen_need_bridge_processing (void)
{
return bridge_callbacks.cross_references != NULL;
}
-static HashEntry*
-get_hash_entry (MonoObject *obj, gboolean *existing)
-{
- HashEntry *entry = sgen_hash_table_lookup (&hash_table, obj);
- HashEntry new_entry;
-
- if (entry) {
- if (existing)
- *existing = TRUE;
- return entry;
- }
- if (existing)
- *existing = FALSE;
-
- memset (&new_entry, 0, sizeof (HashEntry));
-
- new_entry.obj = obj;
- dyn_array_ptr_init (&new_entry.srcs);
- new_entry.finishing_time = -1;
- new_entry.scc_index = -1;
-
- sgen_hash_table_replace (&hash_table, obj, &new_entry, NULL);
-
- return sgen_hash_table_lookup (&hash_table, obj);
-}
-
-static void
-add_source (HashEntry *entry, HashEntry *src)
-{
- dyn_array_ptr_add (&entry->srcs, src);
-}
-
-static void
-free_data (void)
-{
- MonoObject *obj;
- HashEntry *entry;
- int total_srcs = 0;
- int max_srcs = 0;
-
- SGEN_HASH_TABLE_FOREACH (&hash_table, obj, entry) {
- int entry_size = dyn_array_ptr_size (&entry->srcs);
- total_srcs += entry_size;
- if (entry_size > max_srcs)
- max_srcs = entry_size;
- dyn_array_ptr_uninit (&entry->srcs);
- } SGEN_HASH_TABLE_FOREACH_END;
-
- sgen_hash_table_clean (&hash_table);
-
- dyn_array_int_uninit (&merge_array);
- //g_print ("total srcs %d - max %d\n", total_srcs, max_srcs);
-}
-
-static HashEntry*
-register_bridge_object (MonoObject *obj)
-{
- HashEntry *entry = get_hash_entry (obj, NULL);
- entry->is_bridge = TRUE;
- return entry;
-}
-
-static void
-register_finishing_time (HashEntry *entry, int t)
-{
- g_assert (entry->finishing_time < 0);
- entry->finishing_time = t;
-}
-
-static gboolean
-object_is_live (MonoObject **objp)
-{
- MonoObject *obj = *objp;
- MonoObject *fwd = SGEN_OBJECT_IS_FORWARDED (obj);
- if (fwd) {
- *objp = fwd;
- return sgen_hash_table_lookup (&hash_table, fwd) == NULL;
- }
- if (!sgen_object_is_live (obj))
- return FALSE;
- return sgen_hash_table_lookup (&hash_table, obj) == NULL;
-}
-
-static DynPtrArray registered_bridges;
-static DynPtrArray dfs_stack;
-
-static int dsf1_passes, dsf2_passes;
-
-
-#undef HANDLE_PTR
-#define HANDLE_PTR(ptr,obj) do { \
- MonoObject *dst = (MonoObject*)*(ptr); \
- if (dst && !object_is_live (&dst)) { \
- dyn_array_ptr_push (&dfs_stack, obj_entry); \
- dyn_array_ptr_push (&dfs_stack, get_hash_entry (dst, NULL)); \
- } \
- } while (0)
-
-static void
-dfs1 (HashEntry *obj_entry)
-{
- HashEntry *src;
- g_assert (dyn_array_ptr_size (&dfs_stack) == 0);
-
- dyn_array_ptr_push (&dfs_stack, NULL);
- dyn_array_ptr_push (&dfs_stack, obj_entry);
-
- do {
- MonoObject *obj;
- char *start;
- ++dsf1_passes;
-
- obj_entry = dyn_array_ptr_pop (&dfs_stack);
- if (obj_entry) {
- src = dyn_array_ptr_pop (&dfs_stack);
-
- obj = obj_entry->obj;
- start = (char*)obj;
-
- if (src) {
- //g_print ("link %s -> %s\n", sgen_safe_name (src->obj), sgen_safe_name (obj));
- add_source (obj_entry, src);
- } else {
- //g_print ("starting with %s\n", sgen_safe_name (obj));
- }
-
- if (obj_entry->is_visited)
- continue;
-
- obj_entry->is_visited = TRUE;
-
- dyn_array_ptr_push (&dfs_stack, obj_entry);
- /* NULL marks that the next entry is to be finished */
- dyn_array_ptr_push (&dfs_stack, NULL);
-
-#include "sgen-scan-object.h"
- } else {
- obj_entry = dyn_array_ptr_pop (&dfs_stack);
-
- //g_print ("finish %s\n", sgen_safe_name (obj_entry->obj));
- register_finishing_time (obj_entry, current_time++);
- }
- } while (dyn_array_ptr_size (&dfs_stack) > 0);
-}
-
-static void
-scc_add_xref (SCC *src, SCC *dst)
-{
- g_assert (src != dst);
- g_assert (src->index != dst->index);
-
- if (dyn_array_int_contains (&dst->xrefs, src->index))
- return;
- if (src->num_bridge_entries) {
- dyn_array_int_merge_one (&dst->xrefs, src->index);
- } else {
- int i;
- dyn_array_int_merge (&dst->xrefs, &src->xrefs);
- for (i = 0; i < dyn_array_int_size (&dst->xrefs); ++i)
- g_assert (dyn_array_int_get (&dst->xrefs, i) != dst->index);
- }
-}
-
-static void
-scc_add_entry (SCC *scc, HashEntry *entry)
-{
- g_assert (entry->scc_index < 0);
- entry->scc_index = scc->index;
- if (entry->is_bridge)
- ++scc->num_bridge_entries;
-}
-
-static DynSCCArray sccs;
-static SCC *current_scc;
-
-static void
-dfs2 (HashEntry *entry)
-{
- int i;
-
- g_assert (dyn_array_ptr_size (&dfs_stack) == 0);
-
- dyn_array_ptr_push (&dfs_stack, entry);
-
- do {
- entry = dyn_array_ptr_pop (&dfs_stack);
- ++dsf2_passes;
-
- if (entry->scc_index >= 0) {
- if (entry->scc_index != current_scc->index)
- scc_add_xref (dyn_array_scc_get_ptr (&sccs, entry->scc_index), current_scc);
- continue;
- }
-
- scc_add_entry (current_scc, entry);
-
- for (i = 0; i < dyn_array_ptr_size (&entry->srcs); ++i)
- dyn_array_ptr_push (&dfs_stack, dyn_array_ptr_get (&entry->srcs, i));
- } while (dyn_array_ptr_size (&dfs_stack) > 0);
-}
-
-static int
-compare_hash_entries (const HashEntry *e1, const HashEntry *e2)
-{
- return e2->finishing_time - e1->finishing_time;
-}
-
-DEF_QSORT_INLINE(hash_entries, HashEntry*, compare_hash_entries)
-
-static unsigned long step_1, step_2, step_3, step_4, step_5, step_6, step_7, step_8;
-static int fist_pass_links, second_pass_links, sccs_links;
-static int max_sccs_links = 0;
-
+/* Dispatch wrappers */
void
-sgen_bridge_register_finalized_object (MonoObject *obj)
+sgen_bridge_reset_data (void)
{
- g_assert (sgen_need_bridge_processing ());
- dyn_array_ptr_push (®istered_bridges, obj);
+ bridge_processor.reset_data ();
}
void
-sgen_bridge_reset_data (void)
+sgen_bridge_processing_stw_step (void)
{
- dyn_array_ptr_set_size (®istered_bridges, 0);
+ bridge_processor.processing_stw_step ();
}
void
-sgen_bridge_processing_stw_step (void)
+sgen_bridge_processing_finish (int generation)
{
- int i;
- int bridge_count;
- SGEN_TV_DECLARE (atv);
- SGEN_TV_DECLARE (btv);
-
- if (!dyn_array_ptr_size (®istered_bridges))
- return;
-
- /*
- * bridge_processing_in_progress must be set with the world
- * stopped. If not there would be race conditions.
- */
- bridge_processing_in_progress = TRUE;
-
- SGEN_TV_GETTIME (btv);
-
- /* first DFS pass */
-
- dyn_array_ptr_init (&dfs_stack);
- dyn_array_int_init (&merge_array);
-
- current_time = 0;
- /*
- First we insert all bridges into the hash table and then we do dfs1.
-
- It must be done in 2 steps since the bridge arrays doesn't come in reverse topological order,
- which means that we can have entry N pointing to entry N + 1.
-
- If we dfs1 entry N before N + 1 is registered we'll not consider N + 1 for this bridge
- pass and not create the required xref between the two.
- */
- bridge_count = dyn_array_ptr_size (®istered_bridges);
- for (i = 0; i < bridge_count ; ++i)
- register_bridge_object (dyn_array_ptr_get (®istered_bridges, i));
-
- for (i = 0; i < bridge_count; ++i)
- dfs1 (get_hash_entry (dyn_array_ptr_get (®istered_bridges, i), NULL));
-
- SGEN_TV_GETTIME (atv);
- step_2 = SGEN_TV_ELAPSED (btv, atv);
+ bridge_processor.processing_finish (generation);
}
-static mono_bool
-is_bridge_object_alive (MonoObject *obj, void *data)
+MonoGCBridgeObjectKind
+sgen_bridge_class_kind (MonoClass *class)
{
- SgenHashTable *table = data;
- unsigned char *value = sgen_hash_table_lookup (table, obj);
- if (!value)
- return TRUE;
- return *value;
+ return bridge_processor.class_kind (class);
}
void
-sgen_bridge_processing_finish (int generation)
+sgen_bridge_register_finalized_object (MonoObject *obj)
{
- int i, j;
- int num_sccs, num_xrefs;
- int max_entries, max_xrefs;
- int hash_table_size, sccs_size;
- MonoObject *obj;
- HashEntry *entry;
- int num_registered_bridges;
- HashEntry **all_entries;
- MonoGCBridgeSCC **api_sccs;
- MonoGCBridgeXRef *api_xrefs;
- SgenHashTable alive_hash = SGEN_HASH_TABLE_INIT (INTERNAL_MEM_BRIDGE_ALIVE_HASH_TABLE, INTERNAL_MEM_BRIDGE_ALIVE_HASH_TABLE_ENTRY, 1, mono_aligned_addr_hash, NULL);
- SGEN_TV_DECLARE (atv);
- SGEN_TV_DECLARE (btv);
-
- if (!dyn_array_ptr_size (®istered_bridges))
- return;
-
- g_assert (bridge_processing_in_progress);
-
- SGEN_TV_GETTIME (atv);
-
- /* alloc and fill array of all entries */
-
- all_entries = sgen_alloc_internal_dynamic (sizeof (HashEntry*) * hash_table.num_entries, INTERNAL_MEM_BRIDGE_DATA, TRUE);
-
- j = 0;
- SGEN_HASH_TABLE_FOREACH (&hash_table, obj, entry) {
- g_assert (entry->finishing_time >= 0);
- all_entries [j++] = entry;
- fist_pass_links += dyn_array_ptr_size (&entry->srcs);
- } SGEN_HASH_TABLE_FOREACH_END;
- g_assert (j == hash_table.num_entries);
- hash_table_size = hash_table.num_entries;
-
- /* sort array according to decreasing finishing time */
- qsort_hash_entries (all_entries, hash_table.num_entries);
-
- SGEN_TV_GETTIME (btv);
- step_3 = SGEN_TV_ELAPSED (atv, btv);
-
- /* second DFS pass */
-
- dyn_array_scc_init (&sccs);
- for (i = 0; i < hash_table.num_entries; ++i) {
- HashEntry *entry = all_entries [i];
- if (entry->scc_index < 0) {
- int index = dyn_array_scc_size (&sccs);
- current_scc = dyn_array_scc_add (&sccs);
- current_scc->index = index;
- current_scc->num_bridge_entries = 0;
- current_scc->api_index = -1;
- dyn_array_int_init (¤t_scc->xrefs);
-
- dfs2 (entry);
- }
- }
-
- /*
- * Compute the weight of each object. The weight of an object is its size plus the size of all
- * objects it points do. When the an object is pointed by multiple objects we distribute it's weight
- * equally among them. This distribution gives a rough estimate of the real impact of making the object
- * go away.
- *
- * The reasoning for this model is that complex graphs with single roots will have a bridge with very high
- * value in comparison to others.
- *
- * The all_entries array has all objects topologically sorted. To correctly propagate the weights it must be
- * done in reverse topological order - so we calculate the weight of the pointed-to objects before processing
- * pointer-from objects.
- *
- * We log those objects in the opposite order for no particular reason. The other constrain is that it should use the same
- * direction as the other logging loop that records live/dead information.
- */
- if (bridge_accounting_enabled) {
- for (i = hash_table.num_entries - 1; i >= 0; --i) {
- double w;
- HashEntryWithAccounting *entry = (HashEntryWithAccounting*)all_entries [i];
-
- entry->weight += (double)sgen_safe_object_get_size (entry->entry.obj);
- w = entry->weight / dyn_array_ptr_size (&entry->entry.srcs);
- for (j = 0; j < dyn_array_ptr_size (&entry->entry.srcs); ++j) {
- HashEntryWithAccounting *other = (HashEntryWithAccounting *)dyn_array_ptr_get (&entry->entry.srcs, j);
- other->weight += w;
- }
- }
- for (i = 0; i < hash_table.num_entries; ++i) {
- HashEntryWithAccounting *entry = (HashEntryWithAccounting*)all_entries [i];
- if (entry->entry.is_bridge) {
- MonoClass *klass = ((MonoVTable*)SGEN_LOAD_VTABLE (entry->entry.obj))->klass;
- mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC, "OBJECT %s::%s (%p) weight %f", klass->name_space, klass->name, entry->entry.obj, entry->weight);
- }
- }
- }
-
- sccs_size = dyn_array_scc_size (&sccs);
-
- for (i = 0; i < hash_table.num_entries; ++i) {
- HashEntry *entry = all_entries [i];
- second_pass_links += dyn_array_ptr_size (&entry->srcs);
- }
-
- SGEN_TV_GETTIME (atv);
- step_4 = SGEN_TV_ELAPSED (btv, atv);
-
- //g_print ("%d sccs\n", sccs.size);
-
- dyn_array_ptr_uninit (&dfs_stack);
-
- /* init data for callback */
-
- num_sccs = 0;
- for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
- SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
- g_assert (scc->index == i);
- if (scc->num_bridge_entries)
- ++num_sccs;
- sccs_links += dyn_array_int_size (&scc->xrefs);
- max_sccs_links = MAX (max_sccs_links, dyn_array_int_size (&scc->xrefs));
- }
-
- api_sccs = sgen_alloc_internal_dynamic (sizeof (MonoGCBridgeSCC*) * num_sccs, INTERNAL_MEM_BRIDGE_DATA, TRUE);
- num_xrefs = 0;
- j = 0;
- for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
- SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
- if (!scc->num_bridge_entries)
- continue;
-
- api_sccs [j] = sgen_alloc_internal_dynamic (sizeof (MonoGCBridgeSCC) + sizeof (MonoObject*) * scc->num_bridge_entries, INTERNAL_MEM_BRIDGE_DATA, TRUE);
- api_sccs [j]->is_alive = FALSE;
- api_sccs [j]->num_objs = scc->num_bridge_entries;
- scc->num_bridge_entries = 0;
- scc->api_index = j++;
-
- num_xrefs += dyn_array_int_size (&scc->xrefs);
- }
-
- SGEN_HASH_TABLE_FOREACH (&hash_table, obj, entry) {
- if (entry->is_bridge) {
- SCC *scc = dyn_array_scc_get_ptr (&sccs, entry->scc_index);
- api_sccs [scc->api_index]->objs [scc->num_bridge_entries++] = entry->obj;
- }
- } SGEN_HASH_TABLE_FOREACH_END;
-
- api_xrefs = sgen_alloc_internal_dynamic (sizeof (MonoGCBridgeXRef) * num_xrefs, INTERNAL_MEM_BRIDGE_DATA, TRUE);
- j = 0;
- for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
- int k;
- SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
- if (!scc->num_bridge_entries)
- continue;
- for (k = 0; k < dyn_array_int_size (&scc->xrefs); ++k) {
- SCC *src_scc = dyn_array_scc_get_ptr (&sccs, dyn_array_int_get (&scc->xrefs, k));
- if (!src_scc->num_bridge_entries)
- continue;
- api_xrefs [j].src_scc_index = src_scc->api_index;
- api_xrefs [j].dst_scc_index = scc->api_index;
- ++j;
- }
- }
-
- SGEN_TV_GETTIME (btv);
- step_5 = SGEN_TV_ELAPSED (atv, btv);
-
- /* free data */
-
- j = 0;
- max_entries = max_xrefs = 0;
- for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
- SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
- if (scc->num_bridge_entries)
- ++j;
- if (scc->num_bridge_entries > max_entries)
- max_entries = scc->num_bridge_entries;
- if (dyn_array_int_size (&scc->xrefs) > max_xrefs)
- max_xrefs = dyn_array_int_size (&scc->xrefs);
- dyn_array_int_uninit (&scc->xrefs);
-
- }
- dyn_array_scc_uninit (&sccs);
-
- sgen_free_internal_dynamic (all_entries, sizeof (HashEntry*) * hash_table.num_entries, INTERNAL_MEM_BRIDGE_DATA);
-
- free_data ();
- /* Empty the registered bridges array */
- num_registered_bridges = dyn_array_ptr_size (®istered_bridges);
- dyn_array_ptr_set_size (®istered_bridges, 0);
-
- SGEN_TV_GETTIME (atv);
- step_6 = SGEN_TV_ELAPSED (btv, atv);
-
- //g_print ("%d sccs containing bridges - %d max bridge objects - %d max xrefs\n", j, max_entries, max_xrefs);
-
- /* callback */
-
- bridge_callbacks.cross_references (num_sccs, api_sccs, num_xrefs, api_xrefs);
-
- /* Release for finalization those objects we no longer care. */
- SGEN_TV_GETTIME (btv);
- step_7 = SGEN_TV_ELAPSED (atv, btv);
-
- for (i = 0; i < num_sccs; ++i) {
- unsigned char alive = api_sccs [i]->is_alive ? 1 : 0;
- for (j = 0; j < api_sccs [i]->num_objs; ++j) {
- /* Build hash table for nulling weak links. */
- sgen_hash_table_replace (&alive_hash, api_sccs [i]->objs [j], &alive, NULL);
-
- /* Release for finalization those objects we no longer care. */
- if (!api_sccs [i]->is_alive)
- sgen_mark_bridge_object (api_sccs [i]->objs [j]);
- }
- }
-
- /* Null weak links to dead objects. */
- sgen_null_links_with_predicate (GENERATION_NURSERY, is_bridge_object_alive, &alive_hash);
- if (generation == GENERATION_OLD)
- sgen_null_links_with_predicate (GENERATION_OLD, is_bridge_object_alive, &alive_hash);
-
- sgen_hash_table_clean (&alive_hash);
-
- if (bridge_accounting_enabled) {
- for (i = 0; i < num_sccs; ++i) {
- for (j = 0; j < api_sccs [i]->num_objs; ++j)
- mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC,
- "OBJECT %s (%p) SCC [%d] %s",
- sgen_safe_name (api_sccs [i]->objs [j]), api_sccs [i]->objs [j],
- i,
- api_sccs [i]->is_alive ? "ALIVE" : "DEAD");
- }
- }
-
- /* free callback data */
-
- for (i = 0; i < num_sccs; ++i) {
- sgen_free_internal_dynamic (api_sccs [i],
- sizeof (MonoGCBridgeSCC) + sizeof (MonoObject*) * api_sccs [i]->num_objs,
- INTERNAL_MEM_BRIDGE_DATA);
- }
- sgen_free_internal_dynamic (api_sccs, sizeof (MonoGCBridgeSCC*) * num_sccs, INTERNAL_MEM_BRIDGE_DATA);
-
- sgen_free_internal_dynamic (api_xrefs, sizeof (MonoGCBridgeXRef) * num_xrefs, INTERNAL_MEM_BRIDGE_DATA);
-
- SGEN_TV_GETTIME (atv);
- step_8 = SGEN_TV_ELAPSED (btv, atv);
-
- mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC, "GC_BRIDGE num-objects %d num_hash_entries %d sccs size %d init %.2fms df1 %.2fms sort %.2fms dfs2 %.2fms setup-cb %.2fms free-data %.2fms user-cb %.2fms clenanup %.2fms links %d/%d/%d/%d dfs passes %d/%d",
- num_registered_bridges, hash_table_size, dyn_array_scc_size (&sccs),
- step_1 / 1000.0f,
- step_2 / 1000.0f,
- step_3 / 1000.0f,
- step_4 / 1000.0f,
- step_5 / 1000.0f,
- step_6 / 1000.0f,
- step_7 / 1000.0f,
- step_8 / 1000.f,
- fist_pass_links, second_pass_links, sccs_links, max_sccs_links,
- dsf1_passes, dsf2_passes);
-
- step_1 = 0; /* We must cleanup since this value is used as an accumulator. */
-
- bridge_processing_in_progress = FALSE;
+ bridge_processor.register_finalized_object (obj);
}
void
sgen_bridge_describe_pointer (MonoObject *obj)
{
- HashEntry *entry;
- int i;
-
- for (i = 0; i < dyn_array_ptr_size (®istered_bridges); ++i) {
- if (obj == dyn_array_ptr_get (®istered_bridges, i)) {
- printf ("Pointer is a registered bridge object.\n");
- break;
- }
- }
-
- entry = sgen_hash_table_lookup (&hash_table, obj);
- if (!entry)
- return;
+ bridge_processor.describe_pointer (obj);
+}
- printf ("Bridge hash table entry %p:\n", entry);
- printf (" is bridge: %d\n", (int)entry->is_bridge);
- printf (" is visited: %d\n", (int)entry->is_visited);
+void
+sgen_enable_bridge_accounting (void)
+{
+ bridge_processor.enable_accounting ();
}
+/* Test support code */
static const char *bridge_class;
static MonoGCBridgeObjectKind
printf ("cards major (t %d m %d g %d r %d) los (t %d m %d g %d r %d) major_scan %.2fms los_scan %.2fms\n",
major_stats.total, major_stats.marked, major_stats.gc_marked, major_stats.remarked,
los_stats.total, los_stats.marked, los_stats.gc_marked, los_stats.remarked,
- last_major_scan_time / 1000.0, last_los_scan_time / 1000.0);
+ last_major_scan_time / 10000.0f, last_los_scan_time / 10000.0f);
}
#endif
}
sgen_register_test_bridge_callbacks (g_strdup (opt));
continue;
}
+ if (g_str_has_prefix (opt, "bridge-implementation=")) {
+ opt = strchr (opt, '=') + 1;
+ sgen_set_bridge_implementation (opt);
+ continue;
+ }
if (g_str_has_prefix (opt, "toggleref-test")) {
sgen_register_test_toggleref_callback ();
continue;
extern unsigned int sgen_global_stop_count;
extern gboolean bridge_processing_in_progress;
+extern MonoGCBridgeCallbacks bridge_callbacks;
extern int num_ready_finalizers;
void sgen_process_togglerefs (void) MONO_INTERNAL;
void sgen_register_test_toggleref_callback (void) MONO_INTERNAL;
+
+void sgen_register_test_bridge_callbacks (const char *bridge_class_name) MONO_INTERNAL;
+gboolean sgen_is_bridge_object (MonoObject *obj) MONO_INTERNAL;
+void sgen_mark_bridge_object (MonoObject *obj) MONO_INTERNAL;
+
+typedef struct {
+ void (*reset_data) (void);
+ void (*processing_stw_step) (void);
+ void (*processing_finish) (int generation);
+ MonoGCBridgeObjectKind (*class_kind) (MonoClass *class);
+ void (*register_finalized_object) (MonoObject *object);
+ void (*describe_pointer) (MonoObject *object);
+ void (*enable_accounting) (void);
+} SgenBridgeProcessor;
+
+void sgen_old_bridge_init (SgenBridgeProcessor *collector) MONO_INTERNAL;
+void sgen_new_bridge_init (SgenBridgeProcessor *collector) MONO_INTERNAL;
+void sgen_set_bridge_implementation (const char *name) MONO_INTERNAL;
+
typedef mono_bool (*WeakLinkAlivePredicateFunc) (MonoObject*, void*);
void sgen_null_links_with_predicate (int generation, WeakLinkAlivePredicateFunc predicate, void *data) MONO_INTERNAL;
full_timing_buff [0] = '\0';
if (!info->is_overflow)
- sprintf (full_timing_buff, "total %.2fms, bridge %.2fms", info->stw_time / 1000.0f, (int)info->bridge_time / 1000.0f);
+ sprintf (full_timing_buff, "total %.2fms, bridge %.2fms", info->stw_time / 10000.0f, (int)info->bridge_time / 10000.0f);
if (info->generation == GENERATION_OLD)
mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC, "GC_MAJOR%s: (%s) pause %.2fms, %s major %dK/%dK los %dK/%dK",
info->is_overflow ? "_OVERFLOW" : "",
info->reason ? info->reason : "",
- (int)info->total_time / 1000.0f,
+ (int)info->total_time / 10000.0f,
full_timing_buff,
major_collector.section_size * num_major_sections / 1024,
major_collector.section_size * last_major_num_sections / 1024,
mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC, "GC_MINOR%s: (%s) pause %.2fms, %s promoted %dK major %dK los %dK",
info->is_overflow ? "_OVERFLOW" : "",
info->reason ? info->reason : "",
- (int)info->total_time / 1000.0f,
+ (int)info->total_time / 10000.0f,
full_timing_buff,
(num_major_sections - last_major_num_sections) * major_collector.section_size / 1024,
major_collector.section_size * num_major_sections / 1024,
--- /dev/null
+/*
+ * sgen-bridge.c: Simple generational GC.
+ *
+ * Copyright 2011 Novell, Inc (http://www.novell.com)
+ * Copyright 2011 Xamarin Inc (http://www.xamarin.com)
+ *
+ * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
+ * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
+ *
+ * Permission is hereby granted to use or copy this program
+ * for any purpose, provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ *
+ *
+ * Copyright 2001-2003 Ximian, Inc
+ * Copyright 2003-2010 Novell, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "config.h"
+
+#ifdef HAVE_SGEN_GC
+
+#include <stdlib.h>
+
+#include "sgen-gc.h"
+#include "sgen-bridge.h"
+#include "sgen-hash-table.h"
+#include "sgen-qsort.h"
+#include "utils/mono-logger-internal.h"
+#include "utils/mono-time.h"
+#include "utils/mono-compiler.h"
+
+
+typedef struct {
+ int size;
+ int capacity;
+ char *data;
+} DynArray;
+
+/*Specializations*/
+
+typedef struct {
+ DynArray array;
+} DynIntArray;
+
+typedef struct {
+ DynArray array;
+} DynPtrArray;
+
+typedef struct {
+ DynArray array;
+} DynSCCArray;
+
+
+/*
+ * FIXME: Optimizations:
+ *
+ * Don't allocate a scrs array for just one source. Most objects have
+ * just one source, so use the srcs pointer itself.
+ */
+typedef struct _HashEntry {
+ MonoObject *obj; /* This is a duplicate - it's already stored in the hash table */
+
+ gboolean is_bridge;
+ gboolean is_visited;
+
+ int finishing_time;
+
+ DynPtrArray srcs;
+
+ int scc_index;
+} HashEntry;
+
+typedef struct {
+ HashEntry entry;
+ double weight;
+} HashEntryWithAccounting;
+
+typedef struct _SCC {
+ int index;
+ int api_index;
+ int num_bridge_entries;
+ DynIntArray xrefs; /* these are incoming, not outgoing */
+} SCC;
+
+static SgenHashTable hash_table = SGEN_HASH_TABLE_INIT (INTERNAL_MEM_BRIDGE_HASH_TABLE, INTERNAL_MEM_BRIDGE_HASH_TABLE_ENTRY, sizeof (HashEntry), mono_aligned_addr_hash, NULL);
+
+static int current_time;
+
+static gboolean bridge_accounting_enabled = FALSE;
+
+
+/* Core functions */
+/* public */
+
+/* private */
+
+static void
+dyn_array_init (DynArray *da)
+{
+ da->size = 0;
+ da->capacity = 0;
+ da->data = NULL;
+}
+
+static void
+dyn_array_uninit (DynArray *da, int elem_size)
+{
+ if (da->capacity <= 0)
+ return;
+
+ sgen_free_internal_dynamic (da->data, elem_size * da->capacity, INTERNAL_MEM_BRIDGE_DATA);
+ da->data = NULL;
+}
+
+static void
+dyn_array_ensure_capacity (DynArray *da, int capacity, int elem_size)
+{
+ int old_capacity = da->capacity;
+ char *new_data;
+
+ if (capacity <= old_capacity)
+ return;
+
+ if (da->capacity == 0)
+ da->capacity = 2;
+ while (capacity > da->capacity)
+ da->capacity *= 2;
+
+ new_data = sgen_alloc_internal_dynamic (elem_size * da->capacity, INTERNAL_MEM_BRIDGE_DATA, TRUE);
+ memcpy (new_data, da->data, elem_size * da->size);
+ sgen_free_internal_dynamic (da->data, elem_size * old_capacity, INTERNAL_MEM_BRIDGE_DATA);
+ da->data = new_data;
+}
+
+static void*
+dyn_array_add (DynArray *da, int elem_size)
+{
+ void *p;
+
+ dyn_array_ensure_capacity (da, da->size + 1, elem_size);
+
+ p = da->data + da->size * elem_size;
+ ++da->size;
+ return p;
+}
+
+/* int */
+static void
+dyn_array_int_init (DynIntArray *da)
+{
+ dyn_array_init (&da->array);
+}
+
+static void
+dyn_array_int_uninit (DynIntArray *da)
+{
+ dyn_array_uninit (&da->array, sizeof (int));
+}
+
+static int
+dyn_array_int_size (DynIntArray *da)
+{
+ return da->array.size;
+}
+
+static void
+dyn_array_int_set_size (DynIntArray *da, int size)
+{
+ da->array.size = size;
+}
+
+static void
+dyn_array_int_add (DynIntArray *da, int x)
+{
+ int *p = dyn_array_add (&da->array, sizeof (int));
+ *p = x;
+}
+
+static int
+dyn_array_int_get (DynIntArray *da, int x)
+{
+ return ((int*)da->array.data)[x];
+}
+
+static void
+dyn_array_int_set (DynIntArray *da, int idx, int val)
+{
+ ((int*)da->array.data)[idx] = val;
+}
+
+static void
+dyn_array_int_ensure_capacity (DynIntArray *da, int capacity)
+{
+ dyn_array_ensure_capacity (&da->array, capacity, sizeof (int));
+}
+
+static void
+dyn_array_int_set_all (DynIntArray *dst, DynIntArray *src)
+{
+ dyn_array_int_ensure_capacity (dst, src->array.size);
+ memcpy (dst->array.data, src->array.data, src->array.size * sizeof (int));
+ dst->array.size = src->array.size;
+}
+
+/* ptr */
+
+static void
+dyn_array_ptr_init (DynPtrArray *da)
+{
+ dyn_array_init (&da->array);
+}
+
+static void
+dyn_array_ptr_uninit (DynPtrArray *da)
+{
+ dyn_array_uninit (&da->array, sizeof (void*));
+}
+
+static int
+dyn_array_ptr_size (DynPtrArray *da)
+{
+ return da->array.size;
+}
+
+static void
+dyn_array_ptr_set_size (DynPtrArray *da, int size)
+{
+ da->array.size = size;
+}
+
+static void*
+dyn_array_ptr_get (DynPtrArray *da, int x)
+{
+ return ((void**)da->array.data)[x];
+}
+
+static void
+dyn_array_ptr_add (DynPtrArray *da, void *ptr)
+{
+ void **p = dyn_array_add (&da->array, sizeof (void*));
+ *p = ptr;
+}
+
+#define dyn_array_ptr_push dyn_array_ptr_add
+
+static void*
+dyn_array_ptr_pop (DynPtrArray *da)
+{
+ void *p;
+ int size = da->array.size;
+ g_assert (size > 0);
+ p = dyn_array_ptr_get (da, size - 1);
+ --da->array.size;
+ return p;
+}
+
+/*SCC */
+
+static void
+dyn_array_scc_init (DynSCCArray *da)
+{
+ dyn_array_init (&da->array);
+}
+
+static void
+dyn_array_scc_uninit (DynSCCArray *da)
+{
+ dyn_array_uninit (&da->array, sizeof (SCC));
+}
+
+static int
+dyn_array_scc_size (DynSCCArray *da)
+{
+ return da->array.size;
+}
+
+static SCC*
+dyn_array_scc_add (DynSCCArray *da)
+{
+ return dyn_array_add (&da->array, sizeof (SCC));
+}
+
+static SCC*
+dyn_array_scc_get_ptr (DynSCCArray *da, int x)
+{
+ return &((SCC*)da->array.data)[x];
+}
+
+/* Merge code*/
+
+static DynIntArray merge_array;
+
+static gboolean
+dyn_array_int_contains (DynIntArray *da, int x)
+{
+ int i;
+ for (i = 0; i < dyn_array_int_size (da); ++i)
+ if (dyn_array_int_get (da, i) == x)
+ return TRUE;
+ return FALSE;
+}
+
+
+static void
+dyn_array_int_merge (DynIntArray *dst, DynIntArray *src)
+{
+ int i, j;
+
+ dyn_array_int_ensure_capacity (&merge_array, dyn_array_int_size (dst) + dyn_array_int_size (src));
+ dyn_array_int_set_size (&merge_array, 0);
+
+ for (i = j = 0; i < dyn_array_int_size (dst) || j < dyn_array_int_size (src); ) {
+ if (i < dyn_array_int_size (dst) && j < dyn_array_int_size (src)) {
+ int a = dyn_array_int_get (dst, i);
+ int b = dyn_array_int_get (src, j);
+ if (a < b) {
+ dyn_array_int_add (&merge_array, a);
+ ++i;
+ } else if (a == b) {
+ dyn_array_int_add (&merge_array, a);
+ ++i;
+ ++j;
+ } else {
+ dyn_array_int_add (&merge_array, b);
+ ++j;
+ }
+ } else if (i < dyn_array_int_size (dst)) {
+ dyn_array_int_add (&merge_array, dyn_array_int_get (dst, i));
+ ++i;
+ } else {
+ dyn_array_int_add (&merge_array, dyn_array_int_get (src, j));
+ ++j;
+ }
+ }
+
+ if (dyn_array_int_size (&merge_array) > dyn_array_int_size (dst)) {
+ dyn_array_int_set_all (dst, &merge_array);
+ }
+}
+
+static void
+dyn_array_int_merge_one (DynIntArray *array, int value)
+{
+ int i;
+ int tmp;
+ int size = dyn_array_int_size (array);
+
+ for (i = 0; i < size; ++i) {
+ if (dyn_array_int_get (array, i) == value)
+ return;
+ else if (dyn_array_int_get (array, i) > value)
+ break;
+ }
+
+ dyn_array_int_ensure_capacity (array, size + 1);
+
+ if (i < size) {
+ tmp = dyn_array_int_get (array, i);
+ for (; i < size; ++i) {
+ dyn_array_int_set (array, i, value);
+ value = tmp;
+ tmp = dyn_array_int_get (array, i + 1);
+ }
+ dyn_array_int_set (array, size, value);
+ } else {
+ dyn_array_int_set (array, size, value);
+ }
+
+ dyn_array_int_set_size (array, size + 1);
+}
+
+
+static void
+enable_accounting (void)
+{
+ bridge_accounting_enabled = TRUE;
+ hash_table = (SgenHashTable)SGEN_HASH_TABLE_INIT (INTERNAL_MEM_BRIDGE_HASH_TABLE, INTERNAL_MEM_BRIDGE_HASH_TABLE_ENTRY, sizeof (HashEntryWithAccounting), mono_aligned_addr_hash, NULL);
+}
+
+static MonoGCBridgeObjectKind
+class_kind (MonoClass *class)
+{
+ return bridge_callbacks.bridge_class_kind (class);
+}
+
+static HashEntry*
+get_hash_entry (MonoObject *obj, gboolean *existing)
+{
+ HashEntry *entry = sgen_hash_table_lookup (&hash_table, obj);
+ HashEntry new_entry;
+
+ if (entry) {
+ if (existing)
+ *existing = TRUE;
+ return entry;
+ }
+ if (existing)
+ *existing = FALSE;
+
+ memset (&new_entry, 0, sizeof (HashEntry));
+
+ new_entry.obj = obj;
+ dyn_array_ptr_init (&new_entry.srcs);
+ new_entry.finishing_time = -1;
+ new_entry.scc_index = -1;
+
+ sgen_hash_table_replace (&hash_table, obj, &new_entry, NULL);
+
+ return sgen_hash_table_lookup (&hash_table, obj);
+}
+
+static void
+add_source (HashEntry *entry, HashEntry *src)
+{
+ dyn_array_ptr_add (&entry->srcs, src);
+}
+
+static void
+free_data (void)
+{
+ MonoObject *obj;
+ HashEntry *entry;
+ int total_srcs = 0;
+ int max_srcs = 0;
+
+ SGEN_HASH_TABLE_FOREACH (&hash_table, obj, entry) {
+ int entry_size = dyn_array_ptr_size (&entry->srcs);
+ total_srcs += entry_size;
+ if (entry_size > max_srcs)
+ max_srcs = entry_size;
+ dyn_array_ptr_uninit (&entry->srcs);
+ } SGEN_HASH_TABLE_FOREACH_END;
+
+ sgen_hash_table_clean (&hash_table);
+
+ dyn_array_int_uninit (&merge_array);
+ //g_print ("total srcs %d - max %d\n", total_srcs, max_srcs);
+}
+
+static HashEntry*
+register_bridge_object (MonoObject *obj)
+{
+ HashEntry *entry = get_hash_entry (obj, NULL);
+ entry->is_bridge = TRUE;
+ return entry;
+}
+
+static void
+register_finishing_time (HashEntry *entry, int t)
+{
+ g_assert (entry->finishing_time < 0);
+ entry->finishing_time = t;
+}
+
+static gboolean
+object_is_live (MonoObject **objp)
+{
+ MonoObject *obj = *objp;
+ MonoObject *fwd = SGEN_OBJECT_IS_FORWARDED (obj);
+ if (fwd) {
+ *objp = fwd;
+ return sgen_hash_table_lookup (&hash_table, fwd) == NULL;
+ }
+ if (!sgen_object_is_live (obj))
+ return FALSE;
+ return sgen_hash_table_lookup (&hash_table, obj) == NULL;
+}
+
+static DynPtrArray registered_bridges;
+static DynPtrArray dfs_stack;
+
+static int dsf1_passes, dsf2_passes;
+
+
+#undef HANDLE_PTR
+#define HANDLE_PTR(ptr,obj) do { \
+ MonoObject *dst = (MonoObject*)*(ptr); \
+ if (dst && !object_is_live (&dst)) { \
+ dyn_array_ptr_push (&dfs_stack, obj_entry); \
+ dyn_array_ptr_push (&dfs_stack, get_hash_entry (dst, NULL)); \
+ } \
+ } while (0)
+
+static void
+dfs1 (HashEntry *obj_entry)
+{
+ HashEntry *src;
+ g_assert (dyn_array_ptr_size (&dfs_stack) == 0);
+
+ dyn_array_ptr_push (&dfs_stack, NULL);
+ dyn_array_ptr_push (&dfs_stack, obj_entry);
+
+ do {
+ MonoObject *obj;
+ char *start;
+ ++dsf1_passes;
+
+ obj_entry = dyn_array_ptr_pop (&dfs_stack);
+ if (obj_entry) {
+ src = dyn_array_ptr_pop (&dfs_stack);
+
+ obj = obj_entry->obj;
+ start = (char*)obj;
+
+ if (src) {
+ //g_print ("link %s -> %s\n", sgen_safe_name (src->obj), sgen_safe_name (obj));
+ add_source (obj_entry, src);
+ } else {
+ //g_print ("starting with %s\n", sgen_safe_name (obj));
+ }
+
+ if (obj_entry->is_visited)
+ continue;
+
+ obj_entry->is_visited = TRUE;
+
+ dyn_array_ptr_push (&dfs_stack, obj_entry);
+ /* NULL marks that the next entry is to be finished */
+ dyn_array_ptr_push (&dfs_stack, NULL);
+
+#include "sgen-scan-object.h"
+ } else {
+ obj_entry = dyn_array_ptr_pop (&dfs_stack);
+
+ //g_print ("finish %s\n", sgen_safe_name (obj_entry->obj));
+ register_finishing_time (obj_entry, current_time++);
+ }
+ } while (dyn_array_ptr_size (&dfs_stack) > 0);
+}
+
+static void
+scc_add_xref (SCC *src, SCC *dst)
+{
+ g_assert (src != dst);
+ g_assert (src->index != dst->index);
+
+ if (dyn_array_int_contains (&dst->xrefs, src->index))
+ return;
+ if (src->num_bridge_entries) {
+ dyn_array_int_merge_one (&dst->xrefs, src->index);
+ } else {
+ int i;
+ dyn_array_int_merge (&dst->xrefs, &src->xrefs);
+ for (i = 0; i < dyn_array_int_size (&dst->xrefs); ++i)
+ g_assert (dyn_array_int_get (&dst->xrefs, i) != dst->index);
+ }
+}
+
+static void
+scc_add_entry (SCC *scc, HashEntry *entry)
+{
+ g_assert (entry->scc_index < 0);
+ entry->scc_index = scc->index;
+ if (entry->is_bridge)
+ ++scc->num_bridge_entries;
+}
+
+static DynSCCArray sccs;
+static SCC *current_scc;
+
+static void
+dfs2 (HashEntry *entry)
+{
+ int i;
+
+ g_assert (dyn_array_ptr_size (&dfs_stack) == 0);
+
+ dyn_array_ptr_push (&dfs_stack, entry);
+
+ do {
+ entry = dyn_array_ptr_pop (&dfs_stack);
+ ++dsf2_passes;
+
+ if (entry->scc_index >= 0) {
+ if (entry->scc_index != current_scc->index)
+ scc_add_xref (dyn_array_scc_get_ptr (&sccs, entry->scc_index), current_scc);
+ continue;
+ }
+
+ scc_add_entry (current_scc, entry);
+
+ for (i = 0; i < dyn_array_ptr_size (&entry->srcs); ++i)
+ dyn_array_ptr_push (&dfs_stack, dyn_array_ptr_get (&entry->srcs, i));
+ } while (dyn_array_ptr_size (&dfs_stack) > 0);
+}
+
+static int
+compare_hash_entries (const HashEntry *e1, const HashEntry *e2)
+{
+ return e2->finishing_time - e1->finishing_time;
+}
+
+DEF_QSORT_INLINE(hash_entries, HashEntry*, compare_hash_entries)
+
+static unsigned long step_1, step_2, step_3, step_4, step_5, step_6, step_7, step_8;
+static int fist_pass_links, second_pass_links, sccs_links;
+static int max_sccs_links = 0;
+
+static void
+register_finalized_object (MonoObject *obj)
+{
+ g_assert (sgen_need_bridge_processing ());
+ dyn_array_ptr_push (®istered_bridges, obj);
+}
+
+static void
+reset_data (void)
+{
+ dyn_array_ptr_set_size (®istered_bridges, 0);
+}
+
+static void
+processing_stw_step (void)
+{
+ int i;
+ int bridge_count;
+ SGEN_TV_DECLARE (atv);
+ SGEN_TV_DECLARE (btv);
+
+ if (!dyn_array_ptr_size (®istered_bridges))
+ return;
+
+ /*
+ * bridge_processing_in_progress must be set with the world
+ * stopped. If not there would be race conditions.
+ */
+ bridge_processing_in_progress = TRUE;
+
+ SGEN_TV_GETTIME (btv);
+
+ /* first DFS pass */
+
+ dyn_array_ptr_init (&dfs_stack);
+ dyn_array_int_init (&merge_array);
+
+ current_time = 0;
+ /*
+ First we insert all bridges into the hash table and then we do dfs1.
+
+ It must be done in 2 steps since the bridge arrays doesn't come in reverse topological order,
+ which means that we can have entry N pointing to entry N + 1.
+
+ If we dfs1 entry N before N + 1 is registered we'll not consider N + 1 for this bridge
+ pass and not create the required xref between the two.
+ */
+ bridge_count = dyn_array_ptr_size (®istered_bridges);
+ for (i = 0; i < bridge_count ; ++i)
+ register_bridge_object (dyn_array_ptr_get (®istered_bridges, i));
+
+ for (i = 0; i < bridge_count; ++i)
+ dfs1 (get_hash_entry (dyn_array_ptr_get (®istered_bridges, i), NULL));
+
+ SGEN_TV_GETTIME (atv);
+ step_2 = SGEN_TV_ELAPSED (btv, atv);
+}
+
+static mono_bool
+is_bridge_object_alive (MonoObject *obj, void *data)
+{
+ SgenHashTable *table = data;
+ unsigned char *value = sgen_hash_table_lookup (table, obj);
+ if (!value)
+ return TRUE;
+ return *value;
+}
+
+static void
+processing_finish (int generation)
+{
+ int i, j;
+ int num_sccs, num_xrefs;
+ int max_entries, max_xrefs;
+ int hash_table_size, sccs_size;
+ MonoObject *obj;
+ HashEntry *entry;
+ int num_registered_bridges;
+ HashEntry **all_entries;
+ MonoGCBridgeSCC **api_sccs;
+ MonoGCBridgeXRef *api_xrefs;
+ SgenHashTable alive_hash = SGEN_HASH_TABLE_INIT (INTERNAL_MEM_BRIDGE_ALIVE_HASH_TABLE, INTERNAL_MEM_BRIDGE_ALIVE_HASH_TABLE_ENTRY, 1, mono_aligned_addr_hash, NULL);
+ SGEN_TV_DECLARE (atv);
+ SGEN_TV_DECLARE (btv);
+
+ if (!dyn_array_ptr_size (®istered_bridges))
+ return;
+
+ g_assert (bridge_processing_in_progress);
+
+ SGEN_TV_GETTIME (atv);
+
+ /* alloc and fill array of all entries */
+
+ all_entries = sgen_alloc_internal_dynamic (sizeof (HashEntry*) * hash_table.num_entries, INTERNAL_MEM_BRIDGE_DATA, TRUE);
+
+ j = 0;
+ SGEN_HASH_TABLE_FOREACH (&hash_table, obj, entry) {
+ g_assert (entry->finishing_time >= 0);
+ all_entries [j++] = entry;
+ fist_pass_links += dyn_array_ptr_size (&entry->srcs);
+ } SGEN_HASH_TABLE_FOREACH_END;
+ g_assert (j == hash_table.num_entries);
+ hash_table_size = hash_table.num_entries;
+
+ /* sort array according to decreasing finishing time */
+ qsort_hash_entries (all_entries, hash_table.num_entries);
+
+ SGEN_TV_GETTIME (btv);
+ step_3 = SGEN_TV_ELAPSED (atv, btv);
+
+ /* second DFS pass */
+
+ dyn_array_scc_init (&sccs);
+ for (i = 0; i < hash_table.num_entries; ++i) {
+ HashEntry *entry = all_entries [i];
+ if (entry->scc_index < 0) {
+ int index = dyn_array_scc_size (&sccs);
+ current_scc = dyn_array_scc_add (&sccs);
+ current_scc->index = index;
+ current_scc->num_bridge_entries = 0;
+ current_scc->api_index = -1;
+ dyn_array_int_init (¤t_scc->xrefs);
+
+ dfs2 (entry);
+ }
+ }
+
+ /*
+ * Compute the weight of each object. The weight of an object is its size plus the size of all
+ * objects it points do. When the an object is pointed by multiple objects we distribute it's weight
+ * equally among them. This distribution gives a rough estimate of the real impact of making the object
+ * go away.
+ *
+ * The reasoning for this model is that complex graphs with single roots will have a bridge with very high
+ * value in comparison to others.
+ *
+ * The all_entries array has all objects topologically sorted. To correctly propagate the weights it must be
+ * done in reverse topological order - so we calculate the weight of the pointed-to objects before processing
+ * pointer-from objects.
+ *
+ * We log those objects in the opposite order for no particular reason. The other constrain is that it should use the same
+ * direction as the other logging loop that records live/dead information.
+ */
+ if (bridge_accounting_enabled) {
+ for (i = hash_table.num_entries - 1; i >= 0; --i) {
+ double w;
+ HashEntryWithAccounting *entry = (HashEntryWithAccounting*)all_entries [i];
+
+ entry->weight += (double)sgen_safe_object_get_size (entry->entry.obj);
+ w = entry->weight / dyn_array_ptr_size (&entry->entry.srcs);
+ for (j = 0; j < dyn_array_ptr_size (&entry->entry.srcs); ++j) {
+ HashEntryWithAccounting *other = (HashEntryWithAccounting *)dyn_array_ptr_get (&entry->entry.srcs, j);
+ other->weight += w;
+ }
+ }
+ for (i = 0; i < hash_table.num_entries; ++i) {
+ HashEntryWithAccounting *entry = (HashEntryWithAccounting*)all_entries [i];
+ if (entry->entry.is_bridge) {
+ MonoClass *klass = ((MonoVTable*)SGEN_LOAD_VTABLE (entry->entry.obj))->klass;
+ mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC, "OBJECT %s::%s (%p) weight %f", klass->name_space, klass->name, entry->entry.obj, entry->weight);
+ }
+ }
+ }
+
+ sccs_size = dyn_array_scc_size (&sccs);
+
+ for (i = 0; i < hash_table.num_entries; ++i) {
+ HashEntry *entry = all_entries [i];
+ second_pass_links += dyn_array_ptr_size (&entry->srcs);
+ }
+
+ SGEN_TV_GETTIME (atv);
+ step_4 = SGEN_TV_ELAPSED (btv, atv);
+
+ //g_print ("%d sccs\n", sccs.size);
+
+ dyn_array_ptr_uninit (&dfs_stack);
+
+ /* init data for callback */
+
+ num_sccs = 0;
+ for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
+ SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
+ g_assert (scc->index == i);
+ if (scc->num_bridge_entries)
+ ++num_sccs;
+ sccs_links += dyn_array_int_size (&scc->xrefs);
+ max_sccs_links = MAX (max_sccs_links, dyn_array_int_size (&scc->xrefs));
+ }
+
+ api_sccs = sgen_alloc_internal_dynamic (sizeof (MonoGCBridgeSCC*) * num_sccs, INTERNAL_MEM_BRIDGE_DATA, TRUE);
+ num_xrefs = 0;
+ j = 0;
+ for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
+ SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
+ if (!scc->num_bridge_entries)
+ continue;
+
+ api_sccs [j] = sgen_alloc_internal_dynamic (sizeof (MonoGCBridgeSCC) + sizeof (MonoObject*) * scc->num_bridge_entries, INTERNAL_MEM_BRIDGE_DATA, TRUE);
+ api_sccs [j]->is_alive = FALSE;
+ api_sccs [j]->num_objs = scc->num_bridge_entries;
+ scc->num_bridge_entries = 0;
+ scc->api_index = j++;
+
+ num_xrefs += dyn_array_int_size (&scc->xrefs);
+ }
+
+ SGEN_HASH_TABLE_FOREACH (&hash_table, obj, entry) {
+ if (entry->is_bridge) {
+ SCC *scc = dyn_array_scc_get_ptr (&sccs, entry->scc_index);
+ api_sccs [scc->api_index]->objs [scc->num_bridge_entries++] = entry->obj;
+ }
+ } SGEN_HASH_TABLE_FOREACH_END;
+
+ api_xrefs = sgen_alloc_internal_dynamic (sizeof (MonoGCBridgeXRef) * num_xrefs, INTERNAL_MEM_BRIDGE_DATA, TRUE);
+ j = 0;
+ for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
+ int k;
+ SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
+ if (!scc->num_bridge_entries)
+ continue;
+ for (k = 0; k < dyn_array_int_size (&scc->xrefs); ++k) {
+ SCC *src_scc = dyn_array_scc_get_ptr (&sccs, dyn_array_int_get (&scc->xrefs, k));
+ if (!src_scc->num_bridge_entries)
+ continue;
+ api_xrefs [j].src_scc_index = src_scc->api_index;
+ api_xrefs [j].dst_scc_index = scc->api_index;
+ ++j;
+ }
+ }
+
+ SGEN_TV_GETTIME (btv);
+ step_5 = SGEN_TV_ELAPSED (atv, btv);
+
+ /* free data */
+
+ j = 0;
+ max_entries = max_xrefs = 0;
+ for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
+ SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
+ if (scc->num_bridge_entries)
+ ++j;
+ if (scc->num_bridge_entries > max_entries)
+ max_entries = scc->num_bridge_entries;
+ if (dyn_array_int_size (&scc->xrefs) > max_xrefs)
+ max_xrefs = dyn_array_int_size (&scc->xrefs);
+ dyn_array_int_uninit (&scc->xrefs);
+
+ }
+ dyn_array_scc_uninit (&sccs);
+
+ sgen_free_internal_dynamic (all_entries, sizeof (HashEntry*) * hash_table.num_entries, INTERNAL_MEM_BRIDGE_DATA);
+
+ free_data ();
+ /* Empty the registered bridges array */
+ num_registered_bridges = dyn_array_ptr_size (®istered_bridges);
+ dyn_array_ptr_set_size (®istered_bridges, 0);
+
+ SGEN_TV_GETTIME (atv);
+ step_6 = SGEN_TV_ELAPSED (btv, atv);
+
+ //g_print ("%d sccs containing bridges - %d max bridge objects - %d max xrefs\n", j, max_entries, max_xrefs);
+
+ /* callback */
+
+ bridge_callbacks.cross_references (num_sccs, api_sccs, num_xrefs, api_xrefs);
+
+ /* Release for finalization those objects we no longer care. */
+ SGEN_TV_GETTIME (btv);
+ step_7 = SGEN_TV_ELAPSED (atv, btv);
+
+ for (i = 0; i < num_sccs; ++i) {
+ unsigned char alive = api_sccs [i]->is_alive ? 1 : 0;
+ for (j = 0; j < api_sccs [i]->num_objs; ++j) {
+ /* Build hash table for nulling weak links. */
+ sgen_hash_table_replace (&alive_hash, api_sccs [i]->objs [j], &alive, NULL);
+
+ /* Release for finalization those objects we no longer care. */
+ if (!api_sccs [i]->is_alive)
+ sgen_mark_bridge_object (api_sccs [i]->objs [j]);
+ }
+ }
+
+ /* Null weak links to dead objects. */
+ sgen_null_links_with_predicate (GENERATION_NURSERY, is_bridge_object_alive, &alive_hash);
+ if (generation == GENERATION_OLD)
+ sgen_null_links_with_predicate (GENERATION_OLD, is_bridge_object_alive, &alive_hash);
+
+ sgen_hash_table_clean (&alive_hash);
+
+ if (bridge_accounting_enabled) {
+ for (i = 0; i < num_sccs; ++i) {
+ for (j = 0; j < api_sccs [i]->num_objs; ++j)
+ mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC,
+ "OBJECT %s (%p) SCC [%d] %s",
+ sgen_safe_name (api_sccs [i]->objs [j]), api_sccs [i]->objs [j],
+ i,
+ api_sccs [i]->is_alive ? "ALIVE" : "DEAD");
+ }
+ }
+
+ /* free callback data */
+
+ for (i = 0; i < num_sccs; ++i) {
+ sgen_free_internal_dynamic (api_sccs [i],
+ sizeof (MonoGCBridgeSCC) + sizeof (MonoObject*) * api_sccs [i]->num_objs,
+ INTERNAL_MEM_BRIDGE_DATA);
+ }
+ sgen_free_internal_dynamic (api_sccs, sizeof (MonoGCBridgeSCC*) * num_sccs, INTERNAL_MEM_BRIDGE_DATA);
+
+ sgen_free_internal_dynamic (api_xrefs, sizeof (MonoGCBridgeXRef) * num_xrefs, INTERNAL_MEM_BRIDGE_DATA);
+
+ SGEN_TV_GETTIME (atv);
+ step_8 = SGEN_TV_ELAPSED (btv, atv);
+
+ mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC, "GC_BRIDGE num-objects %d num_hash_entries %d sccs size %d init %.2fms df1 %.2fms sort %.2fms dfs2 %.2fms setup-cb %.2fms free-data %.2fms user-cb %.2fms clenanup %.2fms links %d/%d/%d/%d dfs passes %d/%d",
+ num_registered_bridges, hash_table_size, dyn_array_scc_size (&sccs),
+ step_1 / 10000.0f,
+ step_2 / 10000.0f,
+ step_3 / 10000.0f,
+ step_4 / 10000.0f,
+ step_5 / 10000.0f,
+ step_6 / 10000.0f,
+ step_7 / 10000.0f,
+ step_8 / 10000.f,
+ fist_pass_links, second_pass_links, sccs_links, max_sccs_links,
+ dsf1_passes, dsf2_passes);
+
+ step_1 = 0; /* We must cleanup since this value is used as an accumulator. */
+
+ bridge_processing_in_progress = FALSE;
+}
+
+static void
+describe_pointer (MonoObject *obj)
+{
+ HashEntry *entry;
+ int i;
+
+ for (i = 0; i < dyn_array_ptr_size (®istered_bridges); ++i) {
+ if (obj == dyn_array_ptr_get (®istered_bridges, i)) {
+ printf ("Pointer is a registered bridge object.\n");
+ break;
+ }
+ }
+
+ entry = sgen_hash_table_lookup (&hash_table, obj);
+ if (!entry)
+ return;
+
+ printf ("Bridge hash table entry %p:\n", entry);
+ printf (" is bridge: %d\n", (int)entry->is_bridge);
+ printf (" is visited: %d\n", (int)entry->is_visited);
+}
+
+void
+sgen_new_bridge_init (SgenBridgeProcessor *collector)
+{
+ collector->reset_data = reset_data;
+ collector->processing_stw_step = processing_stw_step;
+ collector->processing_finish = processing_finish;
+ collector->class_kind = class_kind;
+ collector->register_finalized_object = register_finalized_object;
+ collector->describe_pointer = describe_pointer;
+ collector->enable_accounting = enable_accounting;
+}
+
+#endif
--- /dev/null
+/*
+ * sgen-bridge.c: Simple generational GC.
+ *
+ * Copyright 2011 Novell, Inc (http://www.novell.com)
+ * Copyright 2011 Xamarin Inc (http://www.xamarin.com)
+ *
+ * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
+ * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
+ *
+ * Permission is hereby granted to use or copy this program
+ * for any purpose, provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ *
+ *
+ * Copyright 2001-2003 Ximian, Inc
+ * Copyright 2003-2010 Novell, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "config.h"
+
+#ifdef HAVE_SGEN_GC
+
+#include <stdlib.h>
+
+#include "sgen-gc.h"
+#include "sgen-bridge.h"
+#include "sgen-hash-table.h"
+#include "sgen-qsort.h"
+#include "utils/mono-logger-internal.h"
+#include "utils/mono-time.h"
+#include "utils/mono-compiler.h"
+
+
+typedef struct {
+ int size;
+ int capacity;
+ char *data;
+} DynArray;
+
+/*Specializations*/
+
+typedef struct {
+ DynArray array;
+} DynIntArray;
+
+typedef struct {
+ DynArray array;
+} DynPtrArray;
+
+typedef struct {
+ DynArray array;
+} DynSCCArray;
+
+
+/*
+ * FIXME: Optimizations:
+ *
+ * Don't allocate a scrs array for just one source. Most objects have
+ * just one source, so use the srcs pointer itself.
+ */
+typedef struct _HashEntry {
+ MonoObject *obj; /* This is a duplicate - it's already stored in the hash table */
+
+ gboolean is_bridge;
+ gboolean is_visited;
+
+ int finishing_time;
+
+ DynPtrArray srcs;
+
+ int scc_index;
+} HashEntry;
+
+typedef struct {
+ HashEntry entry;
+ double weight;
+} HashEntryWithAccounting;
+
+typedef struct _SCC {
+ int index;
+ int api_index;
+ int num_bridge_entries;
+ DynIntArray xrefs; /* these are incoming, not outgoing */
+} SCC;
+
+static SgenHashTable hash_table = SGEN_HASH_TABLE_INIT (INTERNAL_MEM_BRIDGE_HASH_TABLE, INTERNAL_MEM_BRIDGE_HASH_TABLE_ENTRY, sizeof (HashEntry), mono_aligned_addr_hash, NULL);
+
+static int current_time;
+
+static gboolean bridge_accounting_enabled = FALSE;
+
+
+/* Core functions */
+/* public */
+
+/* private */
+
+static void
+dyn_array_init (DynArray *da)
+{
+ da->size = 0;
+ da->capacity = 0;
+ da->data = NULL;
+}
+
+static void
+dyn_array_uninit (DynArray *da, int elem_size)
+{
+ if (da->capacity <= 0)
+ return;
+
+ sgen_free_internal_dynamic (da->data, elem_size * da->capacity, INTERNAL_MEM_BRIDGE_DATA);
+ da->data = NULL;
+}
+
+static void
+dyn_array_ensure_capacity (DynArray *da, int capacity, int elem_size)
+{
+ int old_capacity = da->capacity;
+ char *new_data;
+
+ if (capacity <= old_capacity)
+ return;
+
+ if (da->capacity == 0)
+ da->capacity = 2;
+ while (capacity > da->capacity)
+ da->capacity *= 2;
+
+ new_data = sgen_alloc_internal_dynamic (elem_size * da->capacity, INTERNAL_MEM_BRIDGE_DATA, TRUE);
+ memcpy (new_data, da->data, elem_size * da->size);
+ sgen_free_internal_dynamic (da->data, elem_size * old_capacity, INTERNAL_MEM_BRIDGE_DATA);
+ da->data = new_data;
+}
+
+static void*
+dyn_array_add (DynArray *da, int elem_size)
+{
+ void *p;
+
+ dyn_array_ensure_capacity (da, da->size + 1, elem_size);
+
+ p = da->data + da->size * elem_size;
+ ++da->size;
+ return p;
+}
+
+/* int */
+static void
+dyn_array_int_init (DynIntArray *da)
+{
+ dyn_array_init (&da->array);
+}
+
+static void
+dyn_array_int_uninit (DynIntArray *da)
+{
+ dyn_array_uninit (&da->array, sizeof (int));
+}
+
+static int
+dyn_array_int_size (DynIntArray *da)
+{
+ return da->array.size;
+}
+
+static void
+dyn_array_int_set_size (DynIntArray *da, int size)
+{
+ da->array.size = size;
+}
+
+static void
+dyn_array_int_add (DynIntArray *da, int x)
+{
+ int *p = dyn_array_add (&da->array, sizeof (int));
+ *p = x;
+}
+
+static int
+dyn_array_int_get (DynIntArray *da, int x)
+{
+ return ((int*)da->array.data)[x];
+}
+
+static void
+dyn_array_int_set (DynIntArray *da, int idx, int val)
+{
+ ((int*)da->array.data)[idx] = val;
+}
+
+static void
+dyn_array_int_ensure_capacity (DynIntArray *da, int capacity)
+{
+ dyn_array_ensure_capacity (&da->array, capacity, sizeof (int));
+}
+
+static void
+dyn_array_int_set_all (DynIntArray *dst, DynIntArray *src)
+{
+ dyn_array_int_ensure_capacity (dst, src->array.size);
+ memcpy (dst->array.data, src->array.data, src->array.size * sizeof (int));
+ dst->array.size = src->array.size;
+}
+
+/* ptr */
+
+static void
+dyn_array_ptr_init (DynPtrArray *da)
+{
+ dyn_array_init (&da->array);
+}
+
+static void
+dyn_array_ptr_uninit (DynPtrArray *da)
+{
+ dyn_array_uninit (&da->array, sizeof (void*));
+}
+
+static int
+dyn_array_ptr_size (DynPtrArray *da)
+{
+ return da->array.size;
+}
+
+static void
+dyn_array_ptr_set_size (DynPtrArray *da, int size)
+{
+ da->array.size = size;
+}
+
+static void*
+dyn_array_ptr_get (DynPtrArray *da, int x)
+{
+ return ((void**)da->array.data)[x];
+}
+
+static void
+dyn_array_ptr_add (DynPtrArray *da, void *ptr)
+{
+ void **p = dyn_array_add (&da->array, sizeof (void*));
+ *p = ptr;
+}
+
+#define dyn_array_ptr_push dyn_array_ptr_add
+
+static void*
+dyn_array_ptr_pop (DynPtrArray *da)
+{
+ void *p;
+ int size = da->array.size;
+ g_assert (size > 0);
+ p = dyn_array_ptr_get (da, size - 1);
+ --da->array.size;
+ return p;
+}
+
+/*SCC */
+
+static void
+dyn_array_scc_init (DynSCCArray *da)
+{
+ dyn_array_init (&da->array);
+}
+
+static void
+dyn_array_scc_uninit (DynSCCArray *da)
+{
+ dyn_array_uninit (&da->array, sizeof (SCC));
+}
+
+static int
+dyn_array_scc_size (DynSCCArray *da)
+{
+ return da->array.size;
+}
+
+static SCC*
+dyn_array_scc_add (DynSCCArray *da)
+{
+ return dyn_array_add (&da->array, sizeof (SCC));
+}
+
+static SCC*
+dyn_array_scc_get_ptr (DynSCCArray *da, int x)
+{
+ return &((SCC*)da->array.data)[x];
+}
+
+/* Merge code*/
+
+static DynIntArray merge_array;
+
+static gboolean
+dyn_array_int_contains (DynIntArray *da, int x)
+{
+ int i;
+ for (i = 0; i < dyn_array_int_size (da); ++i)
+ if (dyn_array_int_get (da, i) == x)
+ return TRUE;
+ return FALSE;
+}
+
+
+static void
+dyn_array_int_merge (DynIntArray *dst, DynIntArray *src)
+{
+ int i, j;
+
+ dyn_array_int_ensure_capacity (&merge_array, dyn_array_int_size (dst) + dyn_array_int_size (src));
+ dyn_array_int_set_size (&merge_array, 0);
+
+ for (i = j = 0; i < dyn_array_int_size (dst) || j < dyn_array_int_size (src); ) {
+ if (i < dyn_array_int_size (dst) && j < dyn_array_int_size (src)) {
+ int a = dyn_array_int_get (dst, i);
+ int b = dyn_array_int_get (src, j);
+ if (a < b) {
+ dyn_array_int_add (&merge_array, a);
+ ++i;
+ } else if (a == b) {
+ dyn_array_int_add (&merge_array, a);
+ ++i;
+ ++j;
+ } else {
+ dyn_array_int_add (&merge_array, b);
+ ++j;
+ }
+ } else if (i < dyn_array_int_size (dst)) {
+ dyn_array_int_add (&merge_array, dyn_array_int_get (dst, i));
+ ++i;
+ } else {
+ dyn_array_int_add (&merge_array, dyn_array_int_get (src, j));
+ ++j;
+ }
+ }
+
+ if (dyn_array_int_size (&merge_array) > dyn_array_int_size (dst)) {
+ dyn_array_int_set_all (dst, &merge_array);
+ }
+}
+
+static void
+dyn_array_int_merge_one (DynIntArray *array, int value)
+{
+ int i;
+ int tmp;
+ int size = dyn_array_int_size (array);
+
+ for (i = 0; i < size; ++i) {
+ if (dyn_array_int_get (array, i) == value)
+ return;
+ else if (dyn_array_int_get (array, i) > value)
+ break;
+ }
+
+ dyn_array_int_ensure_capacity (array, size + 1);
+
+ if (i < size) {
+ tmp = dyn_array_int_get (array, i);
+ for (; i < size; ++i) {
+ dyn_array_int_set (array, i, value);
+ value = tmp;
+ tmp = dyn_array_int_get (array, i + 1);
+ }
+ dyn_array_int_set (array, size, value);
+ } else {
+ dyn_array_int_set (array, size, value);
+ }
+
+ dyn_array_int_set_size (array, size + 1);
+}
+
+
+static void
+enable_accounting (void)
+{
+ bridge_accounting_enabled = TRUE;
+ hash_table = (SgenHashTable)SGEN_HASH_TABLE_INIT (INTERNAL_MEM_BRIDGE_HASH_TABLE, INTERNAL_MEM_BRIDGE_HASH_TABLE_ENTRY, sizeof (HashEntryWithAccounting), mono_aligned_addr_hash, NULL);
+}
+
+static MonoGCBridgeObjectKind
+class_kind (MonoClass *class)
+{
+ return bridge_callbacks.bridge_class_kind (class);
+}
+
+static HashEntry*
+get_hash_entry (MonoObject *obj, gboolean *existing)
+{
+ HashEntry *entry = sgen_hash_table_lookup (&hash_table, obj);
+ HashEntry new_entry;
+
+ if (entry) {
+ if (existing)
+ *existing = TRUE;
+ return entry;
+ }
+ if (existing)
+ *existing = FALSE;
+
+ memset (&new_entry, 0, sizeof (HashEntry));
+
+ new_entry.obj = obj;
+ dyn_array_ptr_init (&new_entry.srcs);
+ new_entry.finishing_time = -1;
+ new_entry.scc_index = -1;
+
+ sgen_hash_table_replace (&hash_table, obj, &new_entry, NULL);
+
+ return sgen_hash_table_lookup (&hash_table, obj);
+}
+
+static void
+add_source (HashEntry *entry, HashEntry *src)
+{
+ dyn_array_ptr_add (&entry->srcs, src);
+}
+
+static void
+free_data (void)
+{
+ MonoObject *obj;
+ HashEntry *entry;
+ int total_srcs = 0;
+ int max_srcs = 0;
+
+ SGEN_HASH_TABLE_FOREACH (&hash_table, obj, entry) {
+ int entry_size = dyn_array_ptr_size (&entry->srcs);
+ total_srcs += entry_size;
+ if (entry_size > max_srcs)
+ max_srcs = entry_size;
+ dyn_array_ptr_uninit (&entry->srcs);
+ } SGEN_HASH_TABLE_FOREACH_END;
+
+ sgen_hash_table_clean (&hash_table);
+
+ dyn_array_int_uninit (&merge_array);
+ //g_print ("total srcs %d - max %d\n", total_srcs, max_srcs);
+}
+
+static HashEntry*
+register_bridge_object (MonoObject *obj)
+{
+ HashEntry *entry = get_hash_entry (obj, NULL);
+ entry->is_bridge = TRUE;
+ return entry;
+}
+
+static void
+register_finishing_time (HashEntry *entry, int t)
+{
+ g_assert (entry->finishing_time < 0);
+ entry->finishing_time = t;
+}
+
+static gboolean
+object_is_live (MonoObject **objp)
+{
+ MonoObject *obj = *objp;
+ MonoObject *fwd = SGEN_OBJECT_IS_FORWARDED (obj);
+ if (fwd) {
+ *objp = fwd;
+ return sgen_hash_table_lookup (&hash_table, fwd) == NULL;
+ }
+ if (!sgen_object_is_live (obj))
+ return FALSE;
+ return sgen_hash_table_lookup (&hash_table, obj) == NULL;
+}
+
+static DynPtrArray registered_bridges;
+static DynPtrArray dfs_stack;
+
+static int dsf1_passes, dsf2_passes;
+
+
+#undef HANDLE_PTR
+#define HANDLE_PTR(ptr,obj) do { \
+ MonoObject *dst = (MonoObject*)*(ptr); \
+ if (dst && !object_is_live (&dst)) { \
+ dyn_array_ptr_push (&dfs_stack, obj_entry); \
+ dyn_array_ptr_push (&dfs_stack, get_hash_entry (dst, NULL)); \
+ } \
+ } while (0)
+
+static void
+dfs1 (HashEntry *obj_entry)
+{
+ HashEntry *src;
+ g_assert (dyn_array_ptr_size (&dfs_stack) == 0);
+
+ dyn_array_ptr_push (&dfs_stack, NULL);
+ dyn_array_ptr_push (&dfs_stack, obj_entry);
+
+ do {
+ MonoObject *obj;
+ char *start;
+ ++dsf1_passes;
+
+ obj_entry = dyn_array_ptr_pop (&dfs_stack);
+ if (obj_entry) {
+ src = dyn_array_ptr_pop (&dfs_stack);
+
+ obj = obj_entry->obj;
+ start = (char*)obj;
+
+ if (src) {
+ //g_print ("link %s -> %s\n", sgen_safe_name (src->obj), sgen_safe_name (obj));
+ add_source (obj_entry, src);
+ } else {
+ //g_print ("starting with %s\n", sgen_safe_name (obj));
+ }
+
+ if (obj_entry->is_visited)
+ continue;
+
+ obj_entry->is_visited = TRUE;
+
+ dyn_array_ptr_push (&dfs_stack, obj_entry);
+ /* NULL marks that the next entry is to be finished */
+ dyn_array_ptr_push (&dfs_stack, NULL);
+
+#include "sgen-scan-object.h"
+ } else {
+ obj_entry = dyn_array_ptr_pop (&dfs_stack);
+
+ //g_print ("finish %s\n", sgen_safe_name (obj_entry->obj));
+ register_finishing_time (obj_entry, current_time++);
+ }
+ } while (dyn_array_ptr_size (&dfs_stack) > 0);
+}
+
+static void
+scc_add_xref (SCC *src, SCC *dst)
+{
+ g_assert (src != dst);
+ g_assert (src->index != dst->index);
+
+ if (dyn_array_int_contains (&dst->xrefs, src->index))
+ return;
+ if (src->num_bridge_entries) {
+ dyn_array_int_merge_one (&dst->xrefs, src->index);
+ } else {
+ int i;
+ dyn_array_int_merge (&dst->xrefs, &src->xrefs);
+ for (i = 0; i < dyn_array_int_size (&dst->xrefs); ++i)
+ g_assert (dyn_array_int_get (&dst->xrefs, i) != dst->index);
+ }
+}
+
+static void
+scc_add_entry (SCC *scc, HashEntry *entry)
+{
+ g_assert (entry->scc_index < 0);
+ entry->scc_index = scc->index;
+ if (entry->is_bridge)
+ ++scc->num_bridge_entries;
+}
+
+static DynSCCArray sccs;
+static SCC *current_scc;
+
+static void
+dfs2 (HashEntry *entry)
+{
+ int i;
+
+ g_assert (dyn_array_ptr_size (&dfs_stack) == 0);
+
+ dyn_array_ptr_push (&dfs_stack, entry);
+
+ do {
+ entry = dyn_array_ptr_pop (&dfs_stack);
+ ++dsf2_passes;
+
+ if (entry->scc_index >= 0) {
+ if (entry->scc_index != current_scc->index)
+ scc_add_xref (dyn_array_scc_get_ptr (&sccs, entry->scc_index), current_scc);
+ continue;
+ }
+
+ scc_add_entry (current_scc, entry);
+
+ for (i = 0; i < dyn_array_ptr_size (&entry->srcs); ++i)
+ dyn_array_ptr_push (&dfs_stack, dyn_array_ptr_get (&entry->srcs, i));
+ } while (dyn_array_ptr_size (&dfs_stack) > 0);
+}
+
+static int
+compare_hash_entries (const HashEntry *e1, const HashEntry *e2)
+{
+ return e2->finishing_time - e1->finishing_time;
+}
+
+DEF_QSORT_INLINE(hash_entries, HashEntry*, compare_hash_entries)
+
+static unsigned long step_1, step_2, step_3, step_4, step_5, step_6, step_7, step_8;
+static int fist_pass_links, second_pass_links, sccs_links;
+static int max_sccs_links = 0;
+
+static void
+register_finalized_object (MonoObject *obj)
+{
+ g_assert (sgen_need_bridge_processing ());
+ dyn_array_ptr_push (®istered_bridges, obj);
+}
+
+static void
+reset_data (void)
+{
+ dyn_array_ptr_set_size (®istered_bridges, 0);
+}
+
+static void
+processing_stw_step (void)
+{
+ int i;
+ int bridge_count;
+ SGEN_TV_DECLARE (atv);
+ SGEN_TV_DECLARE (btv);
+
+ if (!dyn_array_ptr_size (®istered_bridges))
+ return;
+
+ /*
+ * bridge_processing_in_progress must be set with the world
+ * stopped. If not there would be race conditions.
+ */
+ bridge_processing_in_progress = TRUE;
+
+ SGEN_TV_GETTIME (btv);
+
+ /* first DFS pass */
+
+ dyn_array_ptr_init (&dfs_stack);
+ dyn_array_int_init (&merge_array);
+
+ current_time = 0;
+ /*
+ First we insert all bridges into the hash table and then we do dfs1.
+
+ It must be done in 2 steps since the bridge arrays doesn't come in reverse topological order,
+ which means that we can have entry N pointing to entry N + 1.
+
+ If we dfs1 entry N before N + 1 is registered we'll not consider N + 1 for this bridge
+ pass and not create the required xref between the two.
+ */
+ bridge_count = dyn_array_ptr_size (®istered_bridges);
+ for (i = 0; i < bridge_count ; ++i)
+ register_bridge_object (dyn_array_ptr_get (®istered_bridges, i));
+
+ for (i = 0; i < bridge_count; ++i)
+ dfs1 (get_hash_entry (dyn_array_ptr_get (®istered_bridges, i), NULL));
+
+ SGEN_TV_GETTIME (atv);
+ step_2 = SGEN_TV_ELAPSED (btv, atv);
+}
+
+static mono_bool
+is_bridge_object_alive (MonoObject *obj, void *data)
+{
+ SgenHashTable *table = data;
+ unsigned char *value = sgen_hash_table_lookup (table, obj);
+ if (!value)
+ return TRUE;
+ return *value;
+}
+
+static void
+processing_finish (int generation)
+{
+ int i, j;
+ int num_sccs, num_xrefs;
+ int max_entries, max_xrefs;
+ int hash_table_size, sccs_size;
+ MonoObject *obj;
+ HashEntry *entry;
+ int num_registered_bridges;
+ HashEntry **all_entries;
+ MonoGCBridgeSCC **api_sccs;
+ MonoGCBridgeXRef *api_xrefs;
+ SgenHashTable alive_hash = SGEN_HASH_TABLE_INIT (INTERNAL_MEM_BRIDGE_ALIVE_HASH_TABLE, INTERNAL_MEM_BRIDGE_ALIVE_HASH_TABLE_ENTRY, 1, mono_aligned_addr_hash, NULL);
+ SGEN_TV_DECLARE (atv);
+ SGEN_TV_DECLARE (btv);
+
+ if (!dyn_array_ptr_size (®istered_bridges))
+ return;
+
+ g_assert (bridge_processing_in_progress);
+
+ SGEN_TV_GETTIME (atv);
+
+ /* alloc and fill array of all entries */
+
+ all_entries = sgen_alloc_internal_dynamic (sizeof (HashEntry*) * hash_table.num_entries, INTERNAL_MEM_BRIDGE_DATA, TRUE);
+
+ j = 0;
+ SGEN_HASH_TABLE_FOREACH (&hash_table, obj, entry) {
+ g_assert (entry->finishing_time >= 0);
+ all_entries [j++] = entry;
+ fist_pass_links += dyn_array_ptr_size (&entry->srcs);
+ } SGEN_HASH_TABLE_FOREACH_END;
+ g_assert (j == hash_table.num_entries);
+ hash_table_size = hash_table.num_entries;
+
+ /* sort array according to decreasing finishing time */
+ qsort_hash_entries (all_entries, hash_table.num_entries);
+
+ SGEN_TV_GETTIME (btv);
+ step_3 = SGEN_TV_ELAPSED (atv, btv);
+
+ /* second DFS pass */
+
+ dyn_array_scc_init (&sccs);
+ for (i = 0; i < hash_table.num_entries; ++i) {
+ HashEntry *entry = all_entries [i];
+ if (entry->scc_index < 0) {
+ int index = dyn_array_scc_size (&sccs);
+ current_scc = dyn_array_scc_add (&sccs);
+ current_scc->index = index;
+ current_scc->num_bridge_entries = 0;
+ current_scc->api_index = -1;
+ dyn_array_int_init (¤t_scc->xrefs);
+
+ dfs2 (entry);
+ }
+ }
+
+ /*
+ * Compute the weight of each object. The weight of an object is its size plus the size of all
+ * objects it points do. When the an object is pointed by multiple objects we distribute it's weight
+ * equally among them. This distribution gives a rough estimate of the real impact of making the object
+ * go away.
+ *
+ * The reasoning for this model is that complex graphs with single roots will have a bridge with very high
+ * value in comparison to others.
+ *
+ * The all_entries array has all objects topologically sorted. To correctly propagate the weights it must be
+ * done in reverse topological order - so we calculate the weight of the pointed-to objects before processing
+ * pointer-from objects.
+ *
+ * We log those objects in the opposite order for no particular reason. The other constrain is that it should use the same
+ * direction as the other logging loop that records live/dead information.
+ */
+ if (bridge_accounting_enabled) {
+ for (i = hash_table.num_entries - 1; i >= 0; --i) {
+ double w;
+ HashEntryWithAccounting *entry = (HashEntryWithAccounting*)all_entries [i];
+
+ entry->weight += (double)sgen_safe_object_get_size (entry->entry.obj);
+ w = entry->weight / dyn_array_ptr_size (&entry->entry.srcs);
+ for (j = 0; j < dyn_array_ptr_size (&entry->entry.srcs); ++j) {
+ HashEntryWithAccounting *other = (HashEntryWithAccounting *)dyn_array_ptr_get (&entry->entry.srcs, j);
+ other->weight += w;
+ }
+ }
+ for (i = 0; i < hash_table.num_entries; ++i) {
+ HashEntryWithAccounting *entry = (HashEntryWithAccounting*)all_entries [i];
+ if (entry->entry.is_bridge) {
+ MonoClass *klass = ((MonoVTable*)SGEN_LOAD_VTABLE (entry->entry.obj))->klass;
+ mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC, "OBJECT %s::%s (%p) weight %f", klass->name_space, klass->name, entry->entry.obj, entry->weight);
+ }
+ }
+ }
+
+ sccs_size = dyn_array_scc_size (&sccs);
+
+ for (i = 0; i < hash_table.num_entries; ++i) {
+ HashEntry *entry = all_entries [i];
+ second_pass_links += dyn_array_ptr_size (&entry->srcs);
+ }
+
+ SGEN_TV_GETTIME (atv);
+ step_4 = SGEN_TV_ELAPSED (btv, atv);
+
+ //g_print ("%d sccs\n", sccs.size);
+
+ dyn_array_ptr_uninit (&dfs_stack);
+
+ /* init data for callback */
+
+ num_sccs = 0;
+ for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
+ SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
+ g_assert (scc->index == i);
+ if (scc->num_bridge_entries)
+ ++num_sccs;
+ sccs_links += dyn_array_int_size (&scc->xrefs);
+ max_sccs_links = MAX (max_sccs_links, dyn_array_int_size (&scc->xrefs));
+ }
+
+ api_sccs = sgen_alloc_internal_dynamic (sizeof (MonoGCBridgeSCC*) * num_sccs, INTERNAL_MEM_BRIDGE_DATA, TRUE);
+ num_xrefs = 0;
+ j = 0;
+ for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
+ SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
+ if (!scc->num_bridge_entries)
+ continue;
+
+ api_sccs [j] = sgen_alloc_internal_dynamic (sizeof (MonoGCBridgeSCC) + sizeof (MonoObject*) * scc->num_bridge_entries, INTERNAL_MEM_BRIDGE_DATA, TRUE);
+ api_sccs [j]->is_alive = FALSE;
+ api_sccs [j]->num_objs = scc->num_bridge_entries;
+ scc->num_bridge_entries = 0;
+ scc->api_index = j++;
+
+ num_xrefs += dyn_array_int_size (&scc->xrefs);
+ }
+
+ SGEN_HASH_TABLE_FOREACH (&hash_table, obj, entry) {
+ if (entry->is_bridge) {
+ SCC *scc = dyn_array_scc_get_ptr (&sccs, entry->scc_index);
+ api_sccs [scc->api_index]->objs [scc->num_bridge_entries++] = entry->obj;
+ }
+ } SGEN_HASH_TABLE_FOREACH_END;
+
+ api_xrefs = sgen_alloc_internal_dynamic (sizeof (MonoGCBridgeXRef) * num_xrefs, INTERNAL_MEM_BRIDGE_DATA, TRUE);
+ j = 0;
+ for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
+ int k;
+ SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
+ if (!scc->num_bridge_entries)
+ continue;
+ for (k = 0; k < dyn_array_int_size (&scc->xrefs); ++k) {
+ SCC *src_scc = dyn_array_scc_get_ptr (&sccs, dyn_array_int_get (&scc->xrefs, k));
+ if (!src_scc->num_bridge_entries)
+ continue;
+ api_xrefs [j].src_scc_index = src_scc->api_index;
+ api_xrefs [j].dst_scc_index = scc->api_index;
+ ++j;
+ }
+ }
+
+ SGEN_TV_GETTIME (btv);
+ step_5 = SGEN_TV_ELAPSED (atv, btv);
+
+ /* free data */
+
+ j = 0;
+ max_entries = max_xrefs = 0;
+ for (i = 0; i < dyn_array_scc_size (&sccs); ++i) {
+ SCC *scc = dyn_array_scc_get_ptr (&sccs, i);
+ if (scc->num_bridge_entries)
+ ++j;
+ if (scc->num_bridge_entries > max_entries)
+ max_entries = scc->num_bridge_entries;
+ if (dyn_array_int_size (&scc->xrefs) > max_xrefs)
+ max_xrefs = dyn_array_int_size (&scc->xrefs);
+ dyn_array_int_uninit (&scc->xrefs);
+
+ }
+ dyn_array_scc_uninit (&sccs);
+
+ sgen_free_internal_dynamic (all_entries, sizeof (HashEntry*) * hash_table.num_entries, INTERNAL_MEM_BRIDGE_DATA);
+
+ free_data ();
+ /* Empty the registered bridges array */
+ num_registered_bridges = dyn_array_ptr_size (®istered_bridges);
+ dyn_array_ptr_set_size (®istered_bridges, 0);
+
+ SGEN_TV_GETTIME (atv);
+ step_6 = SGEN_TV_ELAPSED (btv, atv);
+
+ //g_print ("%d sccs containing bridges - %d max bridge objects - %d max xrefs\n", j, max_entries, max_xrefs);
+
+ /* callback */
+
+ bridge_callbacks.cross_references (num_sccs, api_sccs, num_xrefs, api_xrefs);
+
+ /* Release for finalization those objects we no longer care. */
+ SGEN_TV_GETTIME (btv);
+ step_7 = SGEN_TV_ELAPSED (atv, btv);
+
+ for (i = 0; i < num_sccs; ++i) {
+ unsigned char alive = api_sccs [i]->is_alive ? 1 : 0;
+ for (j = 0; j < api_sccs [i]->num_objs; ++j) {
+ /* Build hash table for nulling weak links. */
+ sgen_hash_table_replace (&alive_hash, api_sccs [i]->objs [j], &alive, NULL);
+
+ /* Release for finalization those objects we no longer care. */
+ if (!api_sccs [i]->is_alive)
+ sgen_mark_bridge_object (api_sccs [i]->objs [j]);
+ }
+ }
+
+ /* Null weak links to dead objects. */
+ sgen_null_links_with_predicate (GENERATION_NURSERY, is_bridge_object_alive, &alive_hash);
+ if (generation == GENERATION_OLD)
+ sgen_null_links_with_predicate (GENERATION_OLD, is_bridge_object_alive, &alive_hash);
+
+ sgen_hash_table_clean (&alive_hash);
+
+ if (bridge_accounting_enabled) {
+ for (i = 0; i < num_sccs; ++i) {
+ for (j = 0; j < api_sccs [i]->num_objs; ++j)
+ mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC,
+ "OBJECT %s (%p) SCC [%d] %s",
+ sgen_safe_name (api_sccs [i]->objs [j]), api_sccs [i]->objs [j],
+ i,
+ api_sccs [i]->is_alive ? "ALIVE" : "DEAD");
+ }
+ }
+
+ /* free callback data */
+
+ for (i = 0; i < num_sccs; ++i) {
+ sgen_free_internal_dynamic (api_sccs [i],
+ sizeof (MonoGCBridgeSCC) + sizeof (MonoObject*) * api_sccs [i]->num_objs,
+ INTERNAL_MEM_BRIDGE_DATA);
+ }
+ sgen_free_internal_dynamic (api_sccs, sizeof (MonoGCBridgeSCC*) * num_sccs, INTERNAL_MEM_BRIDGE_DATA);
+
+ sgen_free_internal_dynamic (api_xrefs, sizeof (MonoGCBridgeXRef) * num_xrefs, INTERNAL_MEM_BRIDGE_DATA);
+
+ SGEN_TV_GETTIME (atv);
+ step_8 = SGEN_TV_ELAPSED (btv, atv);
+
+ mono_trace (G_LOG_LEVEL_INFO, MONO_TRACE_GC, "GC_BRIDGE num-objects %d num_hash_entries %d sccs size %d init %.2fms df1 %.2fms sort %.2fms dfs2 %.2fms setup-cb %.2fms free-data %.2fms user-cb %.2fms clenanup %.2fms links %d/%d/%d/%d dfs passes %d/%d",
+ num_registered_bridges, hash_table_size, dyn_array_scc_size (&sccs),
+ step_1 / 10000.0f,
+ step_2 / 10000.0f,
+ step_3 / 10000.0f,
+ step_4 / 10000.0f,
+ step_5 / 10000.0f,
+ step_6 / 10000.0f,
+ step_7 / 10000.0f,
+ step_8 / 10000.f,
+ fist_pass_links, second_pass_links, sccs_links, max_sccs_links,
+ dsf1_passes, dsf2_passes);
+
+ step_1 = 0; /* We must cleanup since this value is used as an accumulator. */
+
+ bridge_processing_in_progress = FALSE;
+}
+
+static void
+describe_pointer (MonoObject *obj)
+{
+ HashEntry *entry;
+ int i;
+
+ for (i = 0; i < dyn_array_ptr_size (®istered_bridges); ++i) {
+ if (obj == dyn_array_ptr_get (®istered_bridges, i)) {
+ printf ("Pointer is a registered bridge object.\n");
+ break;
+ }
+ }
+
+ entry = sgen_hash_table_lookup (&hash_table, obj);
+ if (!entry)
+ return;
+
+ printf ("Bridge hash table entry %p:\n", entry);
+ printf (" is bridge: %d\n", (int)entry->is_bridge);
+ printf (" is visited: %d\n", (int)entry->is_visited);
+}
+
+void
+sgen_old_bridge_init (SgenBridgeProcessor *collector)
+{
+ collector->reset_data = reset_data;
+ collector->processing_stw_step = processing_stw_step;
+ collector->processing_finish = processing_finish;
+ collector->class_kind = class_kind;
+ collector->register_finalized_object = register_finalized_object;
+ collector->describe_pointer = describe_pointer;
+ collector->enable_accounting = enable_accounting;
+}
+
+#endif
}
#ifdef USE_MONO_CTX
-static MonoContext cur_thread_ctx;
+static MonoContext cur_thread_ctx = {0};
#else
static mword cur_thread_regs [ARCH_NUM_REGS] = {0};
#endif
time_stop_world += TV_ELAPSED (stop_world_time, end_handshake);
sgen_memgov_collection_start (generation);
- sgen_bridge_reset_data ();
+ if (sgen_need_bridge_processing ())
+ sgen_bridge_reset_data ();
return count;
}
sgen_try_free_some_memory = TRUE;
- sgen_bridge_processing_finish (generation);
+ if (sgen_need_bridge_processing ())
+ sgen_bridge_processing_finish (generation);
TV_GETTIME (end_bridge);
bridge_usec = TV_ELAPSED (end_sw, end_bridge);
exceptions-arm.c \
tramp-arm.c
-arm64_sources = \
- mini-arm64.c \
- mini-arm64.h \
- exceptions-arm64.c \
- tramp-arm64.c
-
mips_sources = \
mini-mips.c \
mini-mips.h \
arch_define=__arm__
endif
-if ARM64
-arch_sources = $(arm64_sources)
-arch_built=cpu-arm64.h
-arch_define=__aarch64__
-endif
-
if SPARC
arch_sources = $(sparc_sources)
arch_built=cpu-sparc.h
cpu-arm.h: cpu-arm.md genmdesc$(EXEEXT)
$(GENMDESC_PRG) cpu-arm.h arm_cpu_desc $(srcdir)/cpu-arm.md
-cpu-arm64.h: cpu-arm64.md genmdesc$(EXEEXT)
- $(GENMDESC_PRG) cpu-arm64.h arm64_cpu_desc $(srcdir)/cpu-arm64.md
-
cpu-sparc.h: cpu-sparc.md genmdesc$(EXEEXT)
$(GENMDESC_PRG) cpu-sparc.h sparc_desc $(srcdir)/cpu-sparc.md
$(amd64_sources) cpu-amd64.md \
$(ppc_sources) cpu-ppc.md cpu-ppc64.md \
$(arm_sources) cpu-arm.md \
- $(arm64_sources) cpu-arm64.md \
$(mips_sources) cpu-mips.md \
$(sparc_sources) cpu-sparc.md \
$(s390x_sources) cpu-s390x.md \
const char *temp_prefix;
const char *user_symbol_prefix;
const char *llvm_label_prefix;
- const char *inst_directive;
guint32 label_generator;
gboolean llvm;
MonoAotFileFlags flags;
static inline void
emit_code_bytes (MonoAotCompile *acfg, const guint8* buf, int size)
{
-#ifdef TARGET_ARM64
- int i;
-
- g_assert (size % 4 == 0);
- emit_unset_mode (acfg);
- for (i = 0; i < size; i += 4)
- fprintf (acfg->fp, "%s 0x%x\n", acfg->inst_directive, *(guint32*)(buf + i));
-#else
emit_bytes (acfg, buf, size);
-#endif
}
/* ARCHITECTURE SPECIFIC CODE */
#endif
#endif
-#ifdef TARGET_ARM64
-#ifdef TARGET_MACH
-#define AOT_TARGET_STR "ARM64 (MACH)"
-#else
-#define AOT_TARGET_STR "ARM64 (!MACH)"
-#endif
-#endif
-
#ifdef TARGET_POWERPC64
#ifdef __mono_ilp32__
#define AOT_TARGET_STR "POWERPC64 (mono ilp32)"
mono_arch_set_target (acfg->aot_opts.mtriple);
#endif
-#ifdef TARGET_ARM64
- acfg->inst_directive = ".inst";
- if (acfg->aot_opts.mtriple)
- mono_arch_set_target (acfg->aot_opts.mtriple);
-#endif
-
#ifdef TARGET_MACH
acfg->user_symbol_prefix = "_";
acfg->llvm_label_prefix = "_";
- acfg->inst_directive = ".word";
acfg->need_no_dead_strip = TRUE;
acfg->aot_opts.gnu_asm = TRUE;
#endif
#endif
}
-#ifdef TARGET_ARM64
-
-#include "../../../mono-extensions/mono/mini/aot-compiler-arm64.c"
-
-#endif
-
#ifdef MONO_ARCH_AOT_SUPPORTED
/*
* arch_emit_direct_call:
fprintf (acfg->fp, "bl %s\n", target);
}
*call_size = 4;
-#elif defined(TARGET_ARM64)
- arm64_emit_direct_call (acfg, target, external, thumb, ji, call_size);
#elif defined(TARGET_POWERPC)
if (acfg->use_bin_writer) {
g_assert_not_reached ();
#elif defined(TARGET_ARM)
emit_symbol_diff (acfg, acfg->got_symbol, ".", (unsigned int) ((got_slot * sizeof (gpointer))) - 12);
*code_size = mono_arch_get_patch_offset (code) + 4;
-#elif defined(TARGET_ARM64)
- arm64_emit_got_access (acfg, code, got_slot, code_size);
#elif defined(TARGET_POWERPC)
{
guint8 buf [32];
fprintf (acfg->fp, ".long %s-(%s+12)", symbol2, symbol1);
*code_size = 12;
-#elif defined(TARGET_ARM64)
- arm64_emit_objc_selector_ref (acfg, code, index, code_size);
#else
g_assert_not_reached ();
#endif
emit_symbol_diff (acfg, acfg->got_symbol, ".", ((acfg->plt_got_offset_base + index) * sizeof (gpointer)) - 4);
/* Used by mono_aot_get_plt_info_offset */
emit_int32 (acfg, acfg->plt_got_info_offsets [index]);
-#elif defined(TARGET_ARM64)
- arm64_emit_plt_entry (acfg, index);
#elif defined(TARGET_POWERPC)
guint32 offset = (acfg->plt_got_offset_base + index) * sizeof (gpointer);
g_assert (code - buf == 8);
emit_bytes (acfg, buf, code - buf);
}
-#elif defined(TARGET_ARM64)
- arm64_emit_specific_trampoline_pages (acfg);
#endif
}
*/
emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4 + 4);
//emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4 + 8);
-#elif defined(TARGET_ARM64)
- arm64_emit_specific_trampoline (acfg, offset, tramp_size);
#elif defined(TARGET_POWERPC)
guint8 buf [128];
guint8 *code;
else
fprintf (acfg->fp, "\n\tb %s\n", call_target);
}
-#elif defined(TARGET_ARM64)
- arm64_emit_unbox_trampoline (acfg, cfg, method, call_target);
#elif defined(TARGET_POWERPC)
int this_pos = 3;
emit_bytes (acfg, buf, code - buf);
emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) - 4 + 8);
emit_symbol_diff (acfg, acfg->got_symbol, ".", ((offset + 1) * sizeof (gpointer)) - 4 + 4);
-#elif defined(TARGET_ARM64)
- arm64_emit_static_rgctx_trampoline (acfg, offset, tramp_size);
#elif defined(TARGET_POWERPC)
guint8 buf [128];
guint8 *code;
emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) + (code - (labels [0] + 8)) - 4);
*tramp_size = code - buf + 4;
-#elif defined(TARGET_ARM64)
- arm64_emit_imt_thunk (acfg, offset, tramp_size);
#elif defined(TARGET_POWERPC)
guint8 buf [128];
guint8 *code, *labels [16];
/* Emit it */
emit_bytes (acfg, buf, code - buf);
emit_symbol_diff (acfg, acfg->got_symbol, ".", (offset * sizeof (gpointer)) + 4);
-#elif defined(TARGET_ARM64)
- arm64_emit_gsharedvt_arg_trampoline (acfg, offset, tramp_size);
#else
g_assert_not_reached ();
#endif
return findex;
}
-#ifdef TARGET_ARM64
-#define INST_LEN 4
-#else
#define INST_LEN 1
-#endif
/*
* emit_and_reloc_code:
opts->direct_pinvoke = TRUE;
} else if (str_begins_with (arg, "direct-icalls")) {
opts->direct_icalls = TRUE;
-#if defined(TARGET_ARM) || defined(TARGET_ARM64)
+#if defined(TARGET_ARM)
} else if (str_begins_with (arg, "iphone-abi")) {
// older full-aot users did depend on this.
#endif
img_writer_emit_unset_mode (acfg->w);
g_assert (acfg->fp);
fprintf (acfg->fp, ".section __DATA,__objc_selrefs,literal_pointers,no_dead_strip\n");
- fprintf (acfg->fp, ".align 3\n");
+ fprintf (acfg->fp, ".align 2\n");
for (i = 0; i < acfg->objc_selectors->len; ++i) {
fprintf (acfg->fp, "L_OBJC_SELECTOR_REFERENCES_%d:\n", i);
fprintf (acfg->fp, ".long L_OBJC_METH_VAR_NAME_%d\n", i);
}
fprintf (acfg->fp, ".section __DATA,__objc_imageinfo,regular,no_dead_strip\n");
- fprintf (acfg->fp, ".align 3\n");
+ fprintf (acfg->fp, ".align 2\n");
fprintf (acfg->fp, "L_OBJC_IMAGE_INFO:\n");
fprintf (acfg->fp, ".long 0\n");
fprintf (acfg->fp, ".long 16\n");
offset = (((int)ins & 0xffffff) << 8) >> 8;
return (char*)ins_addr + (offset * 4) + 8;
}
-#elif defined(TARGET_ARM64)
- return mono_arch_get_call_target (((guint8*)ins_addr) + 4);
#else
g_assert_not_reached ();
return NULL;
/* method_addresses () contains a table of branches, since the ios linker can update those correctly */
void *addr = NULL;
-#if defined(TARGET_ARM) || defined(TARGET_ARM64)
+#ifdef TARGET_ARM
addr = get_arm_bl_target ((guint32*)amodule->method_addresses + i);
#elif defined(TARGET_X86) || defined(TARGET_AMD64)
addr = mono_arch_get_call_target ((guint8*)amodule->method_addresses + (i * 5) + 5);
}
void
-mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
+mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
{
- MonoAotModule *amodule;
-
/*
* Since AOT code is only used in the root domain,
* mono_domain_get () != mono_get_root_domain () means the calling method
* is AppDomain:InvokeInDomain, so this is the same check as in
* mono_method_same_domain () but without loading the metadata for the method.
*/
- if (mono_domain_get () == mono_get_root_domain ()) {
- if (!got) {
- amodule = find_aot_module (code);
- if (amodule)
- got = amodule->got;
- }
- mono_arch_patch_plt_entry (plt_entry, got, regs, addr);
- }
+ if (mono_domain_get () == mono_get_root_domain ())
+ mono_arch_patch_plt_entry (code, got, regs, addr);
}
/*
/* Patch the PLT entry with target which might be the actual method not a trampoline */
plt_entry = mono_aot_get_plt_entry (code);
g_assert (plt_entry);
- mono_aot_patch_plt_entry (code, plt_entry, module->got, NULL, target);
+ mono_aot_patch_plt_entry (plt_entry, module->got, NULL, target);
return target;
#else
page = (TrampolinePage*)addr;
page->next = trampoline_pages [tramp_type];
trampoline_pages [tramp_type] = page;
-#ifdef TARGET_ARM64
- page->trampolines = (void*)(taddr + amodule->info.tramp_page_code_offsets [tramp_type]);
-#else
page->trampolines = (void*)(taddr + trampolines_pages_code_offsets [tramp_type]);
-#endif
- page->trampolines_end = (void*)(taddr + psize - 64);
+ page->trampolines_end = (void*)(taddr + psize);
code = page->trampolines;
- page->trampolines += specific_trampoline_size;
+ page->trampolines += 8;
mono_aot_page_unlock ();
return code;
}
}
void
-mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr)
+mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr)
{
}
+++ /dev/null
-# Copyright 2011-2013 Xamarin, Inc (http://www.xamarin.com)
-# Copyright 2003-2011 Novell, Inc (http://www.novell.com)
-# arm64 cpu description file
-# this file is read by genmdesc to pruduce a table with all the relevant information
-# about the cpu instructions that may be used by the regsiter allocator, the scheduler
-# and other parts of the arch-dependent part of mini.
-#
-# An opcode name is followed by a colon and optional specifiers.
-# A specifier has a name, a colon and a value. Specifiers are separated by white space.
-# Here is a description of the specifiers valid for this file and their possible values.
-#
-# dest:register describes the destination register of an instruction
-# src1:register describes the first source register of an instruction
-# src2:register describes the second source register of an instruction
-#
-# register may have the following values:
-# i integer register
-# a r3 register (output from calls)
-# b base register (used in address references)
-# f floating point register
-# g floating point register returned in r0:r1 for soft-float mode
-#
-# len:number describe the maximun length in bytes of the instruction
-# number is a positive integer
-#
-# cost:number describe how many cycles are needed to complete the instruction (unused)
-#
-# clob:spec describe if the instruction clobbers registers or has special needs
-#
-# spec can be one of the following characters:
-# c clobbers caller-save registers
-# r 'reserves' the destination register until a later instruction unreserves it
-# used mostly to set output registers in function calls
-#
-# flags:spec describe if the instruction uses or sets the flags (unused)
-#
-# spec can be one of the following chars:
-# s sets the flags
-# u uses the flags
-# m uses and modifies the flags
-#
-# res:spec describe what units are used in the processor (unused)
-#
-# delay: describe delay slots (unused)
-#
-# the required specifiers are: len, clob (if registers are clobbered), the registers
-# specifiers if the registers are actually used, flags (when scheduling is implemented).
-#
-# See the code in mini-x86.c for more details on how the specifiers are used.
-#
-memory_barrier: len:8 clob:a
-nop: len:4
-relaxed_nop: len:4
-break: len:20
-jmp: len:92
-br: len:16
-switch: src1:i len:12
-# See the comment in resume_from_signal_handler, we can't copy the fp regs from sigctx to MonoContext on linux,
-# since the corresponding sigctx structures are not well defined.
-seq_point: len:38 clob:c
-
-throw: src1:i len:24
-rethrow: src1:i len:20
-start_handler: len:32
-endfinally: len:32
-call_handler: len:16 clob:c
-endfilter: src1:i len:32
-
-ckfinite: dest:f src1:f len:64
-ceq: dest:i len:12
-cgt: dest:i len:12
-cgt.un: dest:i len:12
-clt: dest:i len:12
-clt.un: dest:i len:12
-localloc: dest:i src1:i len:96
-compare: src1:i src2:i len:4
-compare_imm: src1:i len:20
-fcompare: src1:f src2:f len:12
-oparglist: src1:i len:12
-setlret: src1:i src2:i len:12
-checkthis: src1:b len:4
-call: dest:a clob:c len:32
-call_reg: dest:a src1:i len:32 clob:c
-call_membase: dest:a src1:b len:32 clob:c
-voidcall: len:32 clob:c
-voidcall_reg: src1:i len:32 clob:c
-voidcall_membase: src1:b len:32 clob:c
-fcall: dest:f len:32 clob:c
-fcall_reg: dest:f src1:i len:32 clob:c
-fcall_membase: dest:f src1:b len:32 clob:c
-lcall: dest:l len:32 clob:c
-lcall_reg: dest:l src1:i len:32 clob:c
-lcall_membase: dest:l src1:b len:32 clob:c
-vcall: len:32 clob:c
-vcall_reg: src1:i len:32 clob:c
-vcall_membase: src1:b len:32 clob:c
-tailcall: len:64
-iconst: dest:i len:16
-r4const: dest:f len:24
-r8const: dest:f len:20
-label: len:0
-store_membase_imm: dest:b len:20
-store_membase_reg: dest:b src1:i len:20
-storei1_membase_imm: dest:b len:20
-storei1_membase_reg: dest:b src1:i len:12
-storei2_membase_imm: dest:b len:20
-storei2_membase_reg: dest:b src1:i len:12
-storei4_membase_imm: dest:b len:20
-storei4_membase_reg: dest:b src1:i len:20
-storer4_membase_reg: dest:b src1:f len:20
-storer8_membase_reg: dest:b src1:f len:24
-store_memindex: dest:b src1:i src2:i len:4
-storei1_memindex: dest:b src1:i src2:i len:4
-storei2_memindex: dest:b src1:i src2:i len:4
-storei4_memindex: dest:b src1:i src2:i len:4
-load_membase: dest:i src1:b len:20
-loadi1_membase: dest:i src1:b len:32
-loadu1_membase: dest:i src1:b len:32
-loadi2_membase: dest:i src1:b len:32
-loadu2_membase: dest:i src1:b len:32
-loadi4_membase: dest:i src1:b len:32
-loadu4_membase: dest:i src1:b len:32
-loadr4_membase: dest:f src1:b len:32
-loadr8_membase: dest:f src1:b len:32
-load_memindex: dest:i src1:b src2:i len:4
-loadi1_memindex: dest:i src1:b src2:i len:4
-loadu1_memindex: dest:i src1:b src2:i len:4
-loadi2_memindex: dest:i src1:b src2:i len:4
-loadu2_memindex: dest:i src1:b src2:i len:4
-loadi4_memindex: dest:i src1:b src2:i len:4
-loadu4_memindex: dest:i src1:b src2:i len:4
-loadu4_mem: dest:i len:8
-move: dest:i src1:i len:4
-fmove: dest:f src1:f len:4
-add_imm: dest:i src1:i len:12
-sub_imm: dest:i src1:i len:12
-mul_imm: dest:i src1:i len:12
-and_imm: dest:i src1:i len:12
-or_imm: dest:i src1:i len:12
-xor_imm: dest:i src1:i len:12
-shl_imm: dest:i src1:i len:8
-shr_imm: dest:i src1:i len:8
-shr_un_imm: dest:i src1:i len:8
-cond_exc_eq: len:8
-cond_exc_ne_un: len:8
-cond_exc_lt: len:8
-cond_exc_lt_un: len:8
-cond_exc_gt: len:8
-cond_exc_gt_un: len:8
-cond_exc_ge: len:8
-cond_exc_ge_un: len:8
-cond_exc_le: len:8
-cond_exc_le_un: len:8
-cond_exc_ov: len:12
-cond_exc_no: len:8
-cond_exc_c: len:12
-cond_exc_nc: len:8
-#float_beq: src1:f src2:f len:20
-#float_bne_un: src1:f src2:f len:20
-#float_blt: src1:f src2:f len:20
-#float_blt_un: src1:f src2:f len:20
-#float_bgt: src1:f src2:f len:20
-#float_bgt_un: src1:f src2:f len:20
-#float_bge: src1:f src2:f len:20
-#float_bge_un: src1:f src2:f len:20
-#float_ble: src1:f src2:f len:20
-#float_ble_un: src1:f src2:f len:20
-float_add: dest:f src1:f src2:f len:4
-float_sub: dest:f src1:f src2:f len:4
-float_mul: dest:f src1:f src2:f len:4
-float_div: dest:f src1:f src2:f len:4
-float_div_un: dest:f src1:f src2:f len:4
-float_rem: dest:f src1:f src2:f len:16
-float_rem_un: dest:f src1:f src2:f len:16
-float_neg: dest:f src1:f len:4
-float_not: dest:f src1:f len:4
-float_conv_to_i1: dest:i src1:f len:40
-float_conv_to_i2: dest:i src1:f len:40
-float_conv_to_i4: dest:i src1:f len:40
-float_conv_to_i8: dest:l src1:f len:40
-float_conv_to_r4: dest:f src1:f len:8
-float_conv_to_u4: dest:i src1:f len:40
-float_conv_to_u8: dest:l src1:f len:40
-float_conv_to_u2: dest:i src1:f len:40
-float_conv_to_u1: dest:i src1:f len:40
-float_conv_to_i: dest:i src1:f len:40
-float_ceq: dest:i src1:f src2:f len:16
-float_cgt: dest:i src1:f src2:f len:16
-float_cgt_un: dest:i src1:f src2:f len:20
-float_clt: dest:i src1:f src2:f len:16
-float_clt_un: dest:i src1:f src2:f len:20
-float_cneq: dest:i src1:f src2:f len:20
-float_cge: dest:i src1:f src2:f len:20
-float_cle: dest:i src1:f src2:f len:20
-float_conv_to_u: dest:i src1:f len:36
-setfret: src1:f len:12
-aot_const: dest:i len:16
-objc_get_selector: dest:i len:32
-sqrt: dest:f src1:f len:4
-adc: dest:i src1:i src2:i len:4
-addcc: dest:i src1:i src2:i len:4
-subcc: dest:i src1:i src2:i len:4
-adc_imm: dest:i src1:i len:12
-addcc_imm: dest:i src1:i len:12
-subcc_imm: dest:i src1:i len:12
-sbb: dest:i src1:i src2:i len:4
-sbb_imm: dest:i src1:i len:12
-br_reg: src1:i len:8
-bigmul: len:8 dest:l src1:i src2:i
-bigmul_un: len:8 dest:l src1:i src2:i
-tls_get: dest:i len:32
-tls_get_reg: dest:i src1:i len:32
-tls_set: src1:i len:32
-tls_set_reg: src1:i src2:i len:32
-
-# 32 bit opcodes
-int_add: dest:i src1:i src2:i len:4
-int_sub: dest:i src1:i src2:i len:4
-int_mul: dest:i src1:i src2:i len:4
-int_div: dest:i src1:i src2:i len:72
-int_div_un: dest:i src1:i src2:i len:72
-int_rem: dest:i src1:i src2:i len:72
-int_rem_un: dest:i src1:i src2:i len:72
-int_and: dest:i src1:i src2:i len:4
-int_or: dest:i src1:i src2:i len:4
-int_xor: dest:i src1:i src2:i len:4
-int_shl: dest:i src1:i src2:i len:4
-int_shr: dest:i src1:i src2:i len:4
-int_shr_un: dest:i src1:i src2:i len:4
-int_neg: dest:i src1:i len:4
-int_not: dest:i src1:i len:4
-int_conv_to_i1: dest:i src1:i len:8
-int_conv_to_i2: dest:i src1:i len:8
-int_conv_to_i4: dest:i src1:i len:4
-int_conv_to_r4: dest:f src1:i len:36
-int_conv_to_r8: dest:f src1:i len:36
-int_conv_to_u4: dest:i src1:i
-int_conv_to_r_un: dest:f src1:i len:56
-int_conv_to_u2: dest:i src1:i len:8
-int_conv_to_u1: dest:i src1:i len:4
-int_beq: len:16
-int_bge: len:16
-int_bgt: len:16
-int_ble: len:16
-int_blt: len:16
-int_bne_un: len:16
-int_bge_un: len:16
-int_bgt_un: len:16
-int_ble_un: len:16
-int_blt_un: len:16
-int_add_ovf: dest:i src1:i src2:i len:16
-int_add_ovf_un: dest:i src1:i src2:i len:16
-int_mul_ovf: dest:i src1:i src2:i len:16
-int_mul_ovf_un: dest:i src1:i src2:i len:16
-int_sub_ovf: dest:i src1:i src2:i len:16
-int_sub_ovf_un: dest:i src1:i src2:i len:16
-add_ovf_carry: dest:i src1:i src2:i len:16
-sub_ovf_carry: dest:i src1:i src2:i len:16
-add_ovf_un_carry: dest:i src1:i src2:i len:16
-sub_ovf_un_carry: dest:i src1:i src2:i len:16
-
-arm_rsbs_imm: dest:i src1:i len:4
-arm_rsc_imm: dest:i src1:i len:4
-
-# Linear IR opcodes
-dummy_use: src1:i len:0
-dummy_store: len:0
-not_reached: len:0
-not_null: src1:i len:0
-
-int_adc: dest:i src1:i src2:i len:4
-int_addcc: dest:i src1:i src2:i len:4
-int_subcc: dest:i src1:i src2:i len:4
-int_sbb: dest:i src1:i src2:i len:4
-int_adc_imm: dest:i src1:i len:12
-int_sbb_imm: dest:i src1:i len:12
-
-int_add_imm: dest:i src1:i len:12
-int_sub_imm: dest:i src1:i len:12
-int_mul_imm: dest:i src1:i len:12
-int_div_imm: dest:i src1:i len:20
-int_div_un_imm: dest:i src1:i len:12
-int_rem_imm: dest:i src1:i len:28
-int_rem_un_imm: dest:i src1:i len:16
-int_and_imm: dest:i src1:i len:12
-int_or_imm: dest:i src1:i len:12
-int_xor_imm: dest:i src1:i len:12
-int_shl_imm: dest:i src1:i len:8
-int_shr_imm: dest:i src1:i len:8
-int_shr_un_imm: dest:i src1:i len:8
-
-int_ceq: dest:i len:12
-int_cgt: dest:i len:12
-int_cgt_un: dest:i len:12
-int_clt: dest:i len:12
-int_clt_un: dest:i len:12
-
-int_cneq: dest:i len:12
-int_cge: dest:i len:12
-int_cle: dest:i len:12
-int_cge_un: dest:i len:12
-int_cle_un: dest:i len:12
-
-cond_exc_ieq: len:16
-cond_exc_ine_un: len:16
-cond_exc_ilt: len:16
-cond_exc_ilt_un: len:16
-cond_exc_igt: len:16
-cond_exc_igt_un: len:16
-cond_exc_ige: len:16
-cond_exc_ige_un: len:16
-cond_exc_ile: len:16
-cond_exc_ile_un: len:16
-cond_exc_iov: len:20
-cond_exc_ino: len:16
-cond_exc_ic: len:20
-cond_exc_inc: len:16
-
-icompare: src1:i src2:i len:4
-icompare_imm: src1:i len:12
-
-long_conv_to_ovf_i4_2: dest:i src1:i src2:i len:36
-
-vcall2: len:32 clob:c
-vcall2_reg: src1:i len:32 clob:c
-vcall2_membase: src1:b len:32 clob:c
-dyn_call: src1:i src2:i len:120 clob:c
-
-# This is different from the original JIT opcodes
-float_beq: len:32
-float_bne_un: len:32
-float_blt: len:32
-float_blt_un: len:32
-float_bgt: len:32
-float_bgt_un: len:32
-float_bge: len:32
-float_bge_un: len:32
-float_ble: len:32
-float_ble_un: len:32
-
-liverange_start: len:0
-liverange_end: len:0
-gc_liveness_def: len:0
-gc_liveness_use: len:0
-gc_spill_slot_liveness_def: len:0
-gc_param_slot_liveness_def: len:0
-
-# 64 bit opcodes
-i8const: dest:i len:16
-sext_i4: dest:i src1:i len:4
-zext_i4: dest:i src1:i len:4
-jump_table: dest:i len:16
-long_add: dest:i src1:i src2:i len:4
-long_sub: dest:i src1:i src2:i len:4
-long_mul: dest:i src1:i src2:i len:4
-long_div: dest:i src1:i src2:i len:80
-long_div_un: dest:i src1:i src2:i len:64
-long_rem: dest:i src1:i src2:i len:80
-long_rem_un: dest:i src1:i src2:i len:64
-long_and: dest:i src1:i src2:i len:4
-long_or: dest:i src1:i src2:i len:4
-long_xor: dest:i src1:i src2:i len:4
-long_shl: dest:i src1:i src2:i len:4
-long_shr: dest:i src1:i src2:i len:4
-long_shr_un: dest:i src1:i src2:i len:4
-long_neg: dest:i src1:i len:4
-long_not: dest:i src1:i len:4
-long_add_imm: dest:i src1:i len:12
-long_sub_imm: dest:i src1:i len:12
-long_mul_imm: dest:i src1:i len:12
-long_and_imm: dest:i src1:i len:12
-long_or_imm: dest:i src1:i len:12
-long_xor_imm: dest:i src1:i len:12
-long_shl_imm: dest:i src1:i len:12
-long_shr_imm: dest:i src1:i len:12
-long_shr_un_imm: dest:i src1:i len:12
-long_add_ovf: dest:i src1:i src2:i len:16
-long_add_ovf_un: dest:i src1:i src2:i len:16
-long_mul_ovf: dest:i src1:i src2:i len:16
-long_mul_ovf_un: dest:i src1:i src2:i len:16
-long_sub_ovf: dest:i src1:i src2:i len:16
-long_sub_ovf_un: dest:i src1:i src2:i len:16
-lcompare: src1:i src2:i len:4
-lcompare_imm: src1:i len:20
-long_beq: len:4
-long_bge: len:4
-long_bgt: len:4
-long_ble: len:4
-long_blt: len:4
-long_bne_un: len:4
-long_bge_un: len:4
-long_bgt_un: len:4
-long_ble_un: len:4
-long_blt_un: len:4
-long_ceq: dest:i len:12
-long_cgt: dest:i len:12
-long_cgt_un: dest:i len:12
-long_clt: dest:i len:12
-long_clt_un: dest:i len:12
-long_conv_to_i1: dest:i src1:i len:4
-long_conv_to_i2: dest:i src1:i len:4
-long_conv_to_u1: dest:i src1:i len:4
-long_conv_to_u2: dest:i src1:i len:4
-long_conv_to_r8: dest:f src1:i len:8
-long_conv_to_r4: dest:f src1:i len:12
-loadi8_membase: dest:i src1:b len:12
-storei8_membase_imm: dest:b len:20
-storei8_membase_reg: dest:b src1:i len:12
-long_conv_to_r_un: dest:f src1:i len:8
-arm_setfreg_r4: dest:f src1:f len:8
-localloc_imm: dest:i len:64
-arm64_cbzw: src1:i len:16
-arm64_cbzx: src1:i len:16
-arm64_cbnzw: src1:i len:16
-arm64_cbnzx: src1:i len:16
-
-atomic_add_new_i4: dest:i src1:i src2:i len:32
-atomic_add_new_i8: dest:i src1:i src2:i len:32
-atomic_exchange_i4: dest:i src1:i src2:i len:32
-atomic_exchange_i8: dest:i src1:i src2:i len:32
-atomic_cas_i4: dest:i src1:i src2:i src3:i len:32
-atomic_cas_i8: dest:i src1:i src2:i src3:i len:32
-
-
+++ /dev/null
-#include "../../../mono-extensions/mono/mini/exceptions-arm64.c"
# this must include all the #defines used in mini-ops.h
my @defines = qw (__i386__ __x86_64__ __ppc__ __powerpc__ __ppc64__ __arm__
- __sparc__ sparc __s390__ s390 __ia64__ __alpha__ __mips__ __aarch64__);
+ __sparc__ sparc __s390__ s390 __ia64__ __alpha__ __mips__);
my %table =();
my %template_table =();
my @opcodes = ();
if ($arch =~ "__arm__") {
$arch_define = "TARGET_ARM";
}
- if ($arch =~ "__aarch64__") {
- $arch_define = "TARGET_ARM64";
- }
parse_file ($arch_define, "$srcdir/mini-ops.h");
return;
#endif /* DISABLE_LOGGING */
#if defined(__i386__) || defined(__x86_64__)
-#ifndef TARGET_ARM64
#define emit_debug_info TRUE
#else
#define emit_debug_info FALSE
#endif
-#else
-#define emit_debug_info FALSE
-#endif
/*This enables us to use the right tooling when building the cross compiler for iOS.*/
#if defined (__APPLE__) && defined (TARGET_ARM) && (defined(__i386__) || defined(__x86_64__))
# else
# define AS_CMD "as -gstabs"
# endif
-#elif defined (TARGET_ARM64)
-# if defined (__APPLE__)
-# define AS_CMD "clang -c -arch arm64 -g -x assembler"
-# else
-# define AS_CMD "as -gstabs"
-# endif
#elif defined(__mips__) && (_MIPS_SIM == _ABIO32)
#define AS_CMD "as -mips32"
#elif defined(__ppc64__)
cmd = g_strdup_printf (ARCH_PREFIX DIS_CMD " %s %s", objdump_args, o_file);
unused = system (cmd);
g_free (cmd);
-
+
#ifndef HOST_WIN32
unlink (o_file);
unlink (as_file);
#if (defined(TARGET_AMD64) || defined(TARGET_POWERPC64)) && !defined(__mono_ilp32__)
#define AS_POINTER_DIRECTIVE ".quad"
-#elif defined(TARGET_ARM64)
-
-#ifdef TARGET_ASM_APPLE
-#define AS_POINTER_DIRECTIVE ".quad"
-#else
-#define AS_POINTER_DIRECTIVE ".xword"
-#endif
-
#else
#define AS_POINTER_DIRECTIVE ".long"
#endif
fprintf (acfg->fp, ".section __DWARF, __%s,regular,debug\n", section_name + 1);
} else
fprintf (acfg->fp, "%s\n", section_name);
-#elif defined(TARGET_ARM) || defined(TARGET_ARM64) || defined(TARGET_POWERPC)
+#elif defined(TARGET_ARM) || defined(TARGET_POWERPC)
/* ARM gas doesn't seem to like subsections of .bss */
if (!strcmp (section_name, ".text") || !strcmp (section_name, ".data")) {
fprintf (acfg->fp, "%s %d\n", section_name, subsection_index);
}
#else
lmf_ins = mono_get_lmf_addr_intrinsic (cfg);
- if (lmf_ins) {
+ if (lmf_ins)
MONO_ADD_INS (cfg->cbb, lmf_ins);
- } else {
-#ifdef TARGET_IOS
- MonoInst *args [16], *jit_tls_ins, *ins;
-
- /* Inline mono_get_lmf_addr () */
- /* jit_tls = pthread_getspecific (mono_jit_tls_id); lmf_addr = &jit_tls->lmf; */
-
- /* Load mono_jit_tls_id */
- EMIT_NEW_AOTCONST (cfg, args [0], MONO_PATCH_INFO_JIT_TLS_ID, NULL);
- /* call pthread_getspecific () */
- jit_tls_ins = mono_emit_jit_icall (cfg, pthread_getspecific, args);
- /* lmf_addr = &jit_tls->lmf */
- EMIT_NEW_BIALU_IMM (cfg, ins, OP_PADD_IMM, cfg->lmf_addr_var->dreg, jit_tls_ins->dreg, G_STRUCT_OFFSET (MonoJitTlsData, lmf));
- lmf_ins = ins;
-#else
+ else
lmf_ins = mono_emit_jit_icall (cfg, mono_get_lmf_addr, NULL);
-#endif
- }
#endif
lmf_ins->dreg = cfg->lmf_addr_var->dreg;
if (args [0]->opcode == OP_GOT_ENTRY) {
pi = args [0]->inst_p1;
g_assert (pi->opcode == OP_PATCH_INFO);
- g_assert (GPOINTER_TO_INT (pi->inst_p1) == MONO_PATCH_INFO_LDSTR);
+ g_assert ((int)pi->inst_p1 == MONO_PATCH_INFO_LDSTR);
ji = pi->inst_p0;
} else {
- g_assert (GPOINTER_TO_INT (args [0]->inst_p1) == MONO_PATCH_INFO_LDSTR);
+ g_assert ((int)args [0]->inst_p1 == MONO_PATCH_INFO_LDSTR);
ji = args [0]->inst_p0;
}
#include "mini-ia64.h"
#elif defined(TARGET_ARM)
#include "mini-arm.h"
-#elif defined(TARGET_ARM64)
-#include "mini-arm64.h"
#elif defined(__mips__)
#include "mini-mips.h"
#else
+++ /dev/null
-#include "../../../mono-extensions/mono/mini/mini-arm64.c"
+++ /dev/null
-#include "../../../mono-extensions/mono/mini/mini-arm64.h"
else {
g_assert (reg >= MONO_MAX_IREGS);
g_assert (hreg < MONO_MAX_IREGS);
-#if !defined(TARGET_ARM) && !defined(TARGET_ARM64)
+#ifndef TARGET_ARM
/* this seems to trigger a gcc compilation bug sometime (hreg is 0) */
- /* On arm64, rgctx_reg is a global hreg, and it is used to pass an argument */
g_assert (! is_global_ireg (hreg));
#endif
desc_to_fixed_reg_inited = TRUE;
/* Validate the cpu description against the info in mini-ops.h */
-#if defined(TARGET_AMD64) || defined(TARGET_X86) || defined(TARGET_ARM) || defined(TARGET_ARM64)
+#if defined(TARGET_AMD64) || defined(TARGET_X86) || defined(TARGET_ARM)
for (i = OP_LOAD; i < OP_LAST; ++i) {
const char *ispec;
static int callee_saved_regs [] = { X86_EBX, X86_ESI, X86_EDI };
#elif defined(TARGET_ARM)
static int callee_saved_regs [] = { ARMREG_V1, ARMREG_V2, ARMREG_V3, ARMREG_V4, ARMREG_V5, ARMREG_V7, ARMREG_FP };
-#elif defined(TARGET_ARM64)
-// FIXME:
-static int callee_saved_regs [] = { };
#elif defined(TARGET_S390X)
static int callee_saved_regs [] = { s390_r6, s390_r7, s390_r8, s390_r9, s390_r10, s390_r11, s390_r12, s390_r13, s390_r14 };
#endif
MINI_OP(OP_CHECK_FINITE, "ppc_check_finite", NONE, IREG, NONE)
#endif
-#if defined(TARGET_ARM) || defined(TARGET_ARM64)
+#if defined(TARGET_ARM)
MINI_OP(OP_ARM_RSBS_IMM, "arm_rsbs_imm", IREG, IREG, NONE)
MINI_OP(OP_ARM_RSC_IMM, "arm_rsc_imm", IREG, IREG, NONE)
-/* Set dreg to an r4 value */
-MINI_OP(OP_ARM_SETFREG_R4, "arm_setfreg_r4", FREG, FREG, NONE)
#endif
#if defined(__sparc__) || defined(sparc)
#endif
-#if defined(TARGET_ARM64)
-/* Branch if sreg1 == 0 */
-MINI_OP(OP_ARM64_CBZW, "arm64_cbzw", NONE, IREG, NONE)
-MINI_OP(OP_ARM64_CBZX, "arm64_cbzx", NONE, IREG, NONE)
-/* Branch if sreg1 != 0 */
-MINI_OP(OP_ARM64_CBNZW, "arm64_cbnzw", NONE, IREG, NONE)
-MINI_OP(OP_ARM64_CBNZX, "arm64_cbnzx", NONE, IREG, NONE)
-#endif
-
/* Same as OUTARG_VT, but has a dreg */
#ifdef ENABLE_LLVM
MINI_OP(OP_LLVM_OUTARG_VT, "llvm_outarg_vt", IREG, VREG, NONE)
}
}
if (!no_patch)
- mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, addr);
+ mono_aot_patch_plt_entry (plt_entry, NULL, regs, addr);
} else {
if (generic_shared) {
if (m->wrapper_type != MONO_WRAPPER_NONE)
plt_entry = mono_aot_get_plt_entry (code);
g_assert (plt_entry);
- mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, addr);
+ mono_aot_patch_plt_entry (plt_entry, NULL, regs, addr);
return addr;
}
if (vtable->initialized) {
if (plt_entry)
- mono_aot_patch_plt_entry (code, plt_entry, NULL, regs, mini_get_nullified_class_init_trampoline ());
+ mono_arch_patch_plt_entry (plt_entry, NULL, regs, mini_get_nullified_class_init_trampoline ());
else
mono_arch_nullify_class_init_trampoline (code, regs);
}
#endif
#ifdef TARGET_IOS
- register_icall (pthread_getspecific, "pthread_getspecific", "ptr ptr", TRUE);
+ register_icall (pthread_getspecific, "pthread_getspecific", NULL, TRUE);
#endif
mono_generic_sharing_init ();
gboolean mono_aot_get_class_from_name (MonoImage *image, const char *name_space, const char *name, MonoClass **klass) MONO_INTERNAL;
MonoJitInfo* mono_aot_find_jit_info (MonoDomain *domain, MonoImage *image, gpointer addr) MONO_INTERNAL;
gpointer mono_aot_plt_resolve (gpointer aot_module, guint32 plt_info_offset, guint8 *code) MONO_INTERNAL;
-void mono_aot_patch_plt_entry (guint8 *code, guint8 *plt_entry, gpointer *got, mgreg_t *regs, guint8 *addr) MONO_INTERNAL;
+void mono_aot_patch_plt_entry (guint8 *code, gpointer *got, mgreg_t *regs, guint8 *addr) MONO_INTERNAL;
gpointer mono_aot_get_method_from_vt_slot (MonoDomain *domain, MonoVTable *vtable, int slot) MONO_INTERNAL;
gpointer mono_aot_create_specific_trampoline (MonoImage *image, gpointer arg1, MonoTrampolineType tramp_type, MonoDomain *domain, guint32 *code_len) MONO_INTERNAL;
gpointer mono_aot_get_trampoline (const char *name) MONO_INTERNAL;
+++ /dev/null
-#include "../../../mono-extensions/mono/mini/tramp-arm64.c"
#define NUM_REGS 272
#define DWARF_DATA_ALIGN (-4)
#define DWARF_PC_REG (mono_hw_reg_to_dwarf_reg (ARMREG_LR))
-#elif defined(TARGET_ARM64)
-/* +1 is for pc */
-#define NUM_REGS (32 + 1)
-#define DWARF_DATA_ALIGN (-8)
-#define DWARF_PC_REG 32
-static int map_hw_reg_to_dwarf_reg [] = {
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
- 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
-};
#elif defined (TARGET_X86)
#ifdef __APPLE__
/*
SGEN_BRIDGE_CONFIGURATIONS = \
"|plain" \
",major=marksweep-conc|ms-conc" \
- ",minor=split|ms-split"
+ ",minor=split|ms-split" \
+ ",bridge-implementation=new|plain-new-bridge" \
+ ",bridge-implementation=new,major=marksweep-conc|ms-conc-new-bridge" \
+ ",bridge-implementation=new,minor=split|ms-split-new-bridge"
sgen-regular-tests: $(SGEN_TESTS)
@failed=0; \
arch_sources += mach-support-arm.c
endif
-if ARM64
-arch_sources += mach-support-arm.c
-endif
-
else
arch_sources += mach-support-unknown.c
arch_sources += mono-hwcap-arm.c mono-hwcap-arm.h
endif
-if ARM64
-arch_sources += mono-hwcap-arm64.c mono-hwcap-arm64.h
-endif
-
if MIPS
arch_sources += mono-hwcap-mips.c mono-hwcap-mips.h
endif
void *
mono_mach_arch_get_ip (thread_state_t state)
{
- /* Can't use unified_thread_state on !ARM64 since this has to compile on armv6 too */
-#ifdef TARGET_ARM64
- arm_unified_thread_state_t *arch_state = (arm_unified_thread_state_t *) state;
-
- return (void *) arch_state->ts_64.__pc;
-#else
arm_thread_state_t *arch_state = (arm_thread_state_t *) state;
return (void *) arch_state->__pc;
-#endif
}
void *
mono_mach_arch_get_sp (thread_state_t state)
{
-#ifdef TARGET_ARM64
- arm_unified_thread_state_t *arch_state = (arm_unified_thread_state_t *) state;
-
- return (void *) arch_state->ts_64.__sp;
-#else
arm_thread_state_t *arch_state = (arm_thread_state_t *) state;
return (void *) arch_state->__sp;
-#endif
}
int
mono_mach_arch_get_mcontext_size ()
{
-#ifdef TARGET_ARM64
- return sizeof (struct __darwin_mcontext64);
-#else
return sizeof (struct __darwin_mcontext);
-#endif
}
void
mono_mach_arch_thread_state_to_mcontext (thread_state_t state, void *context)
{
-#ifdef TARGET_ARM64
- arm_unified_thread_state_t *arch_state = (arm_unified_thread_state_t *) state;
- struct __darwin_mcontext64 *ctx = (struct __darwin_mcontext64 *) context;
-
- ctx->__ss = arch_state->ts_64;
-#else
arm_thread_state_t *arch_state = (arm_thread_state_t *) state;
struct __darwin_mcontext *ctx = (struct __darwin_mcontext *) context;
ctx->__ss = *arch_state;
-#endif
}
void
mono_mach_arch_mcontext_to_thread_state (void *context, thread_state_t state)
{
-#ifdef TARGET_ARM64
- arm_unified_thread_state_t *arch_state = (arm_unified_thread_state_t *) state;
- struct __darwin_mcontext64 *ctx = (struct __darwin_mcontext64 *) context;
-
- arch_state->ts_64 = ctx->__ss;
-#else
arm_thread_state_t *arch_state = (arm_thread_state_t *) state;
struct __darwin_mcontext *ctx = (struct __darwin_mcontext *) context;
*arch_state = ctx->__ss;
-#endif
}
int
mono_mach_arch_get_thread_state_size ()
{
-#ifdef TARGET_ARM64
- return sizeof (arm_unified_thread_state_t);
-#else
return sizeof (arm_thread_state_t);
-#endif
}
kern_return_t
mono_mach_arch_get_thread_state (thread_port_t thread, thread_state_t state, mach_msg_type_number_t *count)
{
-#ifdef TARGET_ARM64
- arm_unified_thread_state_t *arch_state = (arm_unified_thread_state_t *) state;
- kern_return_t ret;
-
- *count = ARM_UNIFIED_THREAD_STATE_COUNT;
-
- ret = thread_get_state (thread, ARM_UNIFIED_THREAD_STATE, (thread_state_t) arch_state, count);
-#else
arm_thread_state_t *arch_state = (arm_thread_state_t *) state;
kern_return_t ret;
*count = ARM_THREAD_STATE_COUNT;
ret = thread_get_state (thread, ARM_THREAD_STATE, (thread_state_t) arch_state, count);
-#endif
+
return ret;
}
kern_return_t
mono_mach_arch_set_thread_state (thread_port_t thread, thread_state_t state, mach_msg_type_number_t count)
{
-#ifdef TARGET_ARM64
- return thread_set_state (thread, ARM_UNIFIED_THREAD_STATE_COUNT, state, count);
-#else
return thread_set_state (thread, ARM_THREAD_STATE_COUNT, state, count);
-#endif
}
void *
#define MONO_MACH_ARCH_SUPPORTED 1
#if defined(__arm__)
typedef _STRUCT_MCONTEXT *mcontext_t;
-#elif defined(__aarch64__)
-typedef _STRUCT_MCONTEXT64 *mcontext_t;
#endif
// We need to define this here since we need _XOPEN_SOURCE for mono
#if defined(__arm__)
#define BIND_ROOM 8
#endif
-#if defined(TARGET_ARM64)
-#define BIND_ROOM 8
-#endif
static CodeChunk*
new_codechunk (CodeChunk *last, int dynamic, int size)
#endif
#elif defined(__arm__) && defined(__ARM_EABI__) && !defined(PIC)
#define MONO_THREAD_VAR_OFFSET(var,offset) __asm (" ldr %0, 1f; b 2f; 1: .word " #var "(tpoff); 2:" : "=r" (offset))
-#elif defined(__aarch64__) && !defined(PIC)
-#define MONO_THREAD_VAR_OFFSET(var,offset) \
- __asm ( "mov %0, #0\n add %0, %0, #:tprel_hi12:" #var "\n add %0, %0, #:tprel_lo12_nc:" #var "\n" \
- : "=r" (offset))
#elif defined(__mono_ppc__) && defined(__GNUC__)
#if defined(PIC)
#ifdef PIC_INITIAL_EXEC
#endif
}
-#elif (defined(__aarch64__) && !defined(MONO_CROSS_COMPILE)) || (defined(TARGET_ARM64))
-
-#include <mono/utils/mono-context.h>
-
-void
-mono_sigctx_to_monoctx (void *sigctx, MonoContext *mctx)
-{
-#ifdef MONO_CROSS_COMPILE
- g_assert_not_reached ();
-#else
- memcpy (mctx->regs, UCONTEXT_GREGS (sigctx), sizeof (mgreg_t) * 31);
- mctx->pc = UCONTEXT_REG_PC (sigctx);
- mctx->regs [ARMREG_SP] = UCONTEXT_REG_SP (sigctx);
- /*
- * We don't handle fp regs, this is not currrently a
- * problem, since we don't allocate them globally.
- */
-#endif
-}
-
-void
-mono_monoctx_to_sigctx (MonoContext *mctx, void *sigctx)
-{
-#ifdef MONO_CROSS_COMPILE
- g_assert_not_reached ();
-#else
- memcpy (UCONTEXT_GREGS (sigctx), mctx->regs, sizeof (mgreg_t) * 31);
- UCONTEXT_REG_PC (sigctx) = mctx->pc;
- UCONTEXT_REG_SP (sigctx) = mctx->regs [ARMREG_SP];
-#endif
-}
-
#elif (defined(__mips__) && !defined(MONO_CROSS_COMPILE)) || (defined(TARGET_MIPS))
#include <mono/utils/mono-context.h>
ctx.pc = ctx.regs [15]; \
} while (0)
-#elif (defined(__aarch64__) && !defined(MONO_CROSS_COMPILE)) || (defined(TARGET_ARM64))
-
-#include <mono/arch/arm64/arm64-codegen.h>
-
-typedef struct {
- mgreg_t regs [32];
- double fregs [32];
- mgreg_t pc;
-} MonoContext;
-
-#define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->pc = (mgreg_t)ip; } while (0)
-#define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->regs [ARMREG_FP] = (mgreg_t)bp; } while (0);
-#define MONO_CONTEXT_SET_SP(ctx,bp) do { (ctx)->regs [ARMREG_SP] = (mgreg_t)bp; } while (0);
-
-#define MONO_CONTEXT_GET_IP(ctx) (gpointer)((ctx)->pc)
-#define MONO_CONTEXT_GET_BP(ctx) (gpointer)((ctx)->regs [ARMREG_FP])
-#define MONO_CONTEXT_GET_SP(ctx) (gpointer)((ctx)->regs [ARMREG_SP])
-
-#define MONO_CONTEXT_GET_CURRENT(ctx) do { \
- __asm__ __volatile__( \
- "mov x16, %0\n" \
- "stp x0, x1, [x16], #16\n" \
- "stp x2, x3, [x16], #16\n" \
- "stp x4, x5, [x16], #16\n" \
- "stp x6, x7, [x16], #16\n" \
- "stp x8, x9, [x16], #16\n" \
- "stp x10, x11, [x16], #16\n" \
- "stp x12, x13, [x16], #16\n" \
- "stp x14, x15, [x16], #16\n" \
- "stp xzr, x17, [x16], #16\n" \
- "stp x18, x19, [x16], #16\n" \
- "stp x20, x21, [x16], #16\n" \
- "stp x22, x23, [x16], #16\n" \
- "stp x24, x25, [x16], #16\n" \
- "stp x26, x27, [x16], #16\n" \
- "stp x28, x29, [x16], #16\n" \
- "stp x30, xzr, [x16]\n" \
- "mov x30, sp\n" \
- "str x30, [x16, #8]\n" \
- : \
- : "r" (&ctx.regs) \
- : "x30", "memory" \
- ); \
- __asm__ __volatile__( \
- "adr %0, L0\n" \
- "L0:\n" \
- : "=r" (ctx.pc) \
- : \
- : "memory" \
- ); \
-} while (0)
#elif defined(__mono_ppc__) /* defined(__arm__) */
+++ /dev/null
-/*
- * mono-hwcap-arm64.c: ARM hardware feature detection
- *
- * Copyright 2013 Xamarin Inc
- */
-
-#include "mono/utils/mono-hwcap-arm64.h"
-
-#if defined(MONO_CROSS_COMPILE)
-void
-mono_hwcap_arch_init (void)
-{
-}
-#else
-void
-mono_hwcap_arch_init (void)
-{
-}
-#endif
-
-void
-mono_hwcap_print(FILE *f)
-{
-}
+++ /dev/null
-#ifndef __MONO_UTILS_HWCAP_ARM64_H__
-#define __MONO_UTILS_HWCAP_ARM64_H__
-
-#include "mono/utils/mono-hwcap.h"
-
-#endif
#define UCONTEXT_REG_R12(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_ip)
#define UCONTEXT_REG_CPSR(ctx) (((arm_ucontext*)(ctx))->sig_ctx.arm_cpsr)
#endif
-
-#elif defined(TARGET_ARM64)
-
-#if defined(MONO_CROSS_COMPILE)
- #define UCONTEXT_REG_PC(ctx) NULL
- #define UCONTEXT_REG_SP(ctx) NULL
- #define UCONTEXT_REG_R0(ctx) NULL
- #define UCONTEXT_GREGS(ctx) NULL
-#elif defined(__APPLE__)
-#include <machine/_mcontext.h>
-#include <sys/_types/_ucontext64.h>
- /* mach/arm/_structs.h */
- #define UCONTEXT_REG_PC(ctx) (((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__pc)
- #define UCONTEXT_REG_SP(ctx) (((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__sp)
- #define UCONTEXT_REG_R0(ctx) (((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__x [ARMREG_R0])
- #define UCONTEXT_GREGS(ctx) (&(((ucontext64_t*)(ctx))->uc_mcontext64->__ss.__x))
-#else
-#include <ucontext.h>
- #define UCONTEXT_REG_PC(ctx) (((ucontext_t*)(ctx))->uc_mcontext.pc)
- #define UCONTEXT_REG_SP(ctx) (((ucontext_t*)(ctx))->uc_mcontext.sp)
- #define UCONTEXT_REG_R0(ctx) (((ucontext_t*)(ctx))->uc_mcontext.regs [ARMREG_R0])
- #define UCONTEXT_GREGS(ctx) (&(((ucontext_t*)(ctx))->uc_mcontext.regs))
-#endif
-
#elif defined(__mips__)
# if HAVE_UCONTEXT_H
dict = objc_msgSend (cur, threadDictionary);
if (dict && objc_msgSend (dict, objectForKey, mono_dead_letter_key) == nil) {
id value = objc_msgSend (objc_msgSend ((id)mono_dead_letter_class, alloc), init);
-
-#ifdef TARGET_ARM64
- /*
- * See the 'Dispatch Objective-C Messages Using the Method Function’s Prototype' section in
- * the '64-Bit Transition Guide for Cocoa Touch' as to why this is required.
- */
- {
- void (*action)(id, SEL, id, id) = (void (*)(id, SEL, id, id)) objc_msgSend;
- action (dict, setObjectForKey, value, mono_dead_letter_key);
- }
-#else
objc_msgSend (dict, setObjectForKey, value, mono_dead_letter_key);
-#endif
-
objc_msgSend (value, release);
}
}
id nsautoreleasepool = objc_getClass ("NSAutoreleasePool");
SEL stringWithUTF8String = sel_registerName ("stringWithUTF8String:");
SEL retain = sel_registerName ("retain");
- id pool;
nsthread = (Class)objc_getClass ("NSThread");
nsobject = (Class)objc_getClass ("NSObject");
objc_registerClassPair (mono_dead_letter_class);
// create the dict key
- pool = objc_msgSend (objc_msgSend (nsautoreleasepool, alloc), init);
-
-#ifdef TARGET_ARM64
- {
- id (*action)(id, SEL, char*) = (id (*)(id, SEL, char*)) objc_msgSend;
- mono_dead_letter_key = action(nsstring, stringWithUTF8String, "mono-dead-letter");
- }
-#else
+ id pool = objc_msgSend (objc_msgSend (nsautoreleasepool, alloc), init);
mono_dead_letter_key = objc_msgSend (nsstring, stringWithUTF8String, "mono-dead-letter");
-#endif
-
objc_msgSend (mono_dead_letter_key, retain);
objc_msgSend (pool, release);
}
return FALSE;
mono_mach_arch_thread_state_to_mcontext (state, mctx);
-#ifdef TARGET_ARM64
- g_assert_not_reached ();
-#else
uctx.uc_mcontext = mctx;
-#endif
mono_monoctx_to_sigctx (&tmp, &uctx);
mono_mach_arch_mcontext_to_thread_state (mctx, state);
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