mcs/class/System.IO.Compression.FileSystem/ZipFileExtensions.cs

   1 //
   2 // ZipFileExtensions.cs
   3 //
   4 // Author:
   5 //       João Matos <joao.matos@xamarin.com>
   6 //       Martin Baulig <martin.baulig@xamarin.com>
   7 //
   8 // Copyright (c) 2013 Xamarin Inc. (http://www.xamarin.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining a copy
  11 // of this software and associated documentation files (the "Software"), to deal
  12 // in the Software without restriction, including without limitation the rights
  13 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14 // copies of the Software, and to permit persons to whom the Software is
  15 // furnished to do so, subject to the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be included in
  18 // all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  23 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  26 // THE SOFTWARE.
  27 using System;
  28
  29 namespace System.IO.Compression
  30 {
  31         public static class ZipFileExtensions
  32         {
  33                 public static ZipArchiveEntry CreateEntryFromFile (
  34                         this ZipArchive destination, string sourceFileName,
  35                         string entryName)
  36                 {
  37                         return CreateEntryFromFile (destination, sourceFileName, entryName,
  38                                 CompressionLevel.Fastest);
  39                 }
  40
  41                 public static ZipArchiveEntry CreateEntryFromFile (
  42                         this ZipArchive destination, string sourceFileName,
  43                         string entryName, CompressionLevel compressionLevel)
  44                 {
  45                         if (destination == null)
  46                                 throw new ArgumentNullException ("destination");
  47
  48                         if (sourceFileName == null)
  49                                 throw new ArgumentNullException ("sourceFileName");
  50
  51                         if (entryName == null)
  52                                 throw new ArgumentNullException ("entryName");
  53
  54                         ZipArchiveEntry entry;
  55                         using (Stream stream = File.Open (sourceFileName, FileMode.Open,
  56                                 FileAccess.Read, FileShare.Read))
  57                         {
  58                                 var zipArchiveEntry = destination.CreateEntry (entryName, compressionLevel);
  59                                 zipArchiveEntry.LastWriteTime = File.GetLastWriteTimeUtc(sourceFileName);
  60
  61                                 using (Stream entryStream = zipArchiveEntry.Open ())
  62                                         stream.CopyTo (entryStream);
  63
  64                                 entry = zipArchiveEntry;
  65                         }
  66
  67                         return entry;
  68                 }
  69
  70                 public static void ExtractToDirectory (
  71                         this ZipArchive source,
  72                         string destinationDirectoryName)
  73                 {
  74                         if (source == null)
  75                                 throw new ArgumentNullException ("source");
  76
  77                         if (destinationDirectoryName == null)
  78                                 throw new ArgumentNullException ("destinationDirectoryName");
  79
  80                         var destDirInfo = Directory.CreateDirectory (destinationDirectoryName);
  81                         string fullName = destDirInfo.FullName;
  82
  83                         foreach (var zipEntry in source.Entries)
  84                         {
  85                                 var fullPath = Path.GetFullPath (Path.Combine (fullName, zipEntry.FullName));
  86
  87                                 var isFileName = Path.GetFileName (fullPath).Length != 0;
  88                                 var dirPath = isFileName ? Path.GetDirectoryName (fullPath) : fullPath;
  89                                 Directory.CreateDirectory (dirPath);
  90
  91                                 if (isFileName)
  92                                         zipEntry.ExtractToFile (fullPath, false);
  93                         }
  94                 }
  95
  96                 public static void ExtractToFile (
  97                         this ZipArchiveEntry source,
  98                         string destinationFileName)
  99                 {
 100                         ExtractToFile (source, destinationFileName, overwrite: false);
 101                 }
 102
 103                 public static void ExtractToFile (
 104                         this ZipArchiveEntry source, string destinationFileName,
 105                         bool overwrite)
 106                 {
 107                         if (source == null)
 108                                 throw new ArgumentNullException ("source");
 109
 110                         if (destinationFileName == null)
 111                                 throw new ArgumentNullException ("destinationFileName");
 112
 113                         var mode = overwrite ? FileMode.Create : FileMode.CreateNew;
 114                         using (var stream = File.Open (destinationFileName, mode, FileAccess.Write))
 115                         {
 116                                 using (var stream2 = source.Open ())
 117                                         stream2.CopyTo(stream);
 118                         }
 119
 120                         File.SetLastWriteTime(destinationFileName, source.LastWriteTime.DateTime);
 121                 }
 122         }
 123 }
 124