mcs/class/System.IO.Compression/SharpCompress/Common/Zip/Headers/LocalEntryHeader.cs

   1 using System.IO;
   2
   3 namespace SharpCompress.Common.Zip.Headers
   4 {
   5     internal enum ExtraDataType : ushort
   6     {
   7         WinZipAes = 0x9901,
   8     }
   9
  10     internal class ExtraData
  11     {
  12         internal ExtraDataType Type { get; set; }
  13         internal ushort Length { get; set; }
  14         internal byte[] DataBytes { get; set; }
  15     }
  16
  17     internal class LocalEntryHeader : ZipFileEntry
  18     {
  19         public LocalEntryHeader()
  20             : base(ZipHeaderType.LocalEntry)
  21         {
  22         }
  23
  24         internal override void Read(BinaryReader reader)
  25         {
  26             Version = reader.ReadUInt16();
  27             Flags = (HeaderFlags) reader.ReadUInt16();
  28             CompressionMethod = (ZipCompressionMethod) reader.ReadUInt16();
  29             LastModifiedTime = reader.ReadUInt16();
  30             LastModifiedDate = reader.ReadUInt16();
  31             Crc = reader.ReadUInt32();
  32             CompressedSize = reader.ReadUInt32();
  33             UncompressedSize = reader.ReadUInt32();
  34             ushort nameLength = reader.ReadUInt16();
  35             ushort extraLength = reader.ReadUInt16();
  36             byte[] name = reader.ReadBytes(nameLength);
  37             byte[] extra = reader.ReadBytes(extraLength);
  38             Name = DecodeString(name);
  39             LoadExtra(extra);
  40         }
  41
  42         internal override void Write(BinaryWriter writer)
  43         {
  44             writer.Write(Version);
  45             writer.Write((ushort) Flags);
  46             writer.Write((ushort) CompressionMethod);
  47             writer.Write(LastModifiedTime);
  48             writer.Write(LastModifiedDate);
  49             writer.Write(Crc);
  50             writer.Write(CompressedSize);
  51             writer.Write(UncompressedSize);
  52
  53             byte[] nameBytes = EncodeString(Name);
  54
  55             writer.Write((ushort) nameBytes.Length);
  56             writer.Write((ushort) 0);
  57             //if (Extra != null)
  58             //{
  59             //    writer.Write(Extra);
  60             //}
  61             writer.Write(nameBytes);
  62         }
  63
  64         internal ushort Version { get; private set; }
  65     }
  66 }