mcs/class/System/System.IO.Compression/GzipStream.cs

   1 /* -*- Mode: csharp; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 //
   3 // GzipStream.cs
   4 //
   5 // Authors:
   6 //      Christopher James Lahey <clahey@ximian.com>
   7 //
   8 // (c) 2004 Novell, Inc. <http://www.novell.com>
   9 //
  10
  11 #if NET_2_0
  12 using System;
  13 using System.IO;
  14 using System.Runtime.InteropServices;
  15 using System.Runtime.Remoting.Messaging;
  16
  17 namespace System.IO.Compression {
  18         class GzipStream : Stream
  19         {
  20                 private DeflateStream deflateStream;
  21
  22                 public GzipStream (Stream compressedStream, CompressionMode mode) :
  23                         this (compressedStream, mode, false) {
  24                 }
  25
  26                 public GzipStream (Stream compressedStream, CompressionMode mode, bool leaveOpen) {
  27                         this.deflateStream = new DeflateStream (compressedStream, mode, leaveOpen, true);
  28                 }
  29
  30                 public override void Close () {
  31                         deflateStream.Close();
  32                 }
  33
  34                 public override int Read (byte[] dest, int dest_offset, int count)
  35                 {
  36                         return deflateStream.Read(dest, dest_offset, count);
  37                 }
  38
  39
  40                 public override void Write (byte[] src, int src_offset, int count)
  41                 {
  42                         deflateStream.Write (src, src_offset, count);
  43                 }
  44
  45                 public override void Flush() {
  46                         deflateStream.Flush();
  47                 }
  48
  49                 public override long Seek (long offset, SeekOrigin origin) {
  50                         return deflateStream.Seek (offset, origin);
  51                 }
  52
  53                 public override void SetLength (long value) {
  54                         deflateStream.SetLength (value);
  55                 }
  56
  57                 public override IAsyncResult BeginRead (byte [] buffer, int offset, int count,
  58                                                         AsyncCallback cback, object state)
  59                 {
  60                         return deflateStream.BeginRead (buffer, offset, count, cback, state);
  61                 }
  62
  63                 public override IAsyncResult BeginWrite (byte [] buffer, int offset, int count,
  64                                                         AsyncCallback cback, object state)
  65                 {
  66                         return deflateStream.BeginWrite (buffer, offset, count, cback, state);
  67                 }
  68
  69                 public override int EndRead(IAsyncResult async_result) {
  70                         return deflateStream.EndRead (async_result);
  71                 }
  72
  73                 public override void EndWrite (IAsyncResult async_result)
  74                 {
  75                         deflateStream.EndWrite (async_result);
  76                 }
  77
  78                 public Stream BaseStream {
  79                         get {
  80                                 return deflateStream.BaseStream;
  81                         }
  82                 }
  83                 public override bool CanRead {
  84                         get {
  85                                 return deflateStream.CanRead;
  86                         }
  87                 }
  88                 public override bool CanSeek {
  89                         get {
  90                                 return deflateStream.CanSeek;
  91                         }
  92                 }
  93                 public override bool CanWrite {
  94                         get {
  95                                 return deflateStream.CanWrite;
  96                         }
  97                 }
  98                 public override long Length {
  99                         get {
 100                                 return deflateStream.Length;
 101                         }
 102                         set {
 103                                 deflateStream.Length = value;
 104                         }
 105                 }
 106                 public override long Position {
 107                         get {
 108                                 return deflateStream.Position;
 109                         }
 110                         set {
 111                                 deflateStream.Position = value;
 112                         }
 113                 }
 114         }
 115 }
 116
 117 #endif