Util/UnclosableStream.cs

   1 //
   2 // UnclosableStream.cs
   3 //
   4 // Copyright (C) 2005 Novell, Inc.
   5 //
   6
   7 //
   8 // Permission is hereby granted, free of charge, to any person obtaining a copy
   9 // of this software and associated documentation files (the "Software"), to deal
  10 // in the Software without restriction, including without limitation the rights
  11 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12 // copies of the Software, and to permit persons to whom the Software is
  13 // furnished to do so, subject to the following conditions:
  14 //
  15 // The above copyright notice and this permission notice shall be included in all
  16 // copies or substantial portions of the Software.
  17 //
  18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24 // SOFTWARE.
  25 //
  26
  27 using System;
  28 using System.IO;
  29
  30 namespace Beagle.Util {
  31
  32         public class UnclosableStream : Stream {
  33
  34                 Stream base_stream;
  35                 bool   close_was_called = false;
  36
  37                 public UnclosableStream (Stream base_stream) : base ()
  38                 {
  39                         this.base_stream = base_stream;
  40                 }
  41
  42                 public Stream BaseStream {
  43                         get { return base_stream; }
  44                 }
  45
  46                 public bool CloseWasCalled {
  47                         get { return close_was_called; }
  48                 }
  49
  50                 public override bool CanRead {
  51                         get { return base_stream.CanRead; }
  52                 }
  53
  54                 public override bool CanWrite {
  55                         get { return base_stream.CanWrite; }
  56                 }
  57
  58                 public override bool CanSeek {
  59                         get { return base_stream.CanSeek; }
  60                 }
  61
  62                 public override long Length {
  63                         get { return base_stream.Length; }
  64                 }
  65
  66                 public override long Position {
  67                         get { return base_stream.Position; }
  68                         set { base_stream.Position = value; }
  69                 }
  70
  71                 public override void Close ()
  72                 {
  73                         base_stream.Flush ();
  74                         close_was_called = true;
  75                 }
  76
  77                 public override void Flush ()
  78                 {
  79                         base_stream.Flush ();
  80                 }
  81
  82                 public override int Read (byte [] buffer, int offset, int count)
  83                 {
  84                         return base_stream.Read (buffer, offset, count);
  85                 }
  86
  87                 public override int ReadByte ()
  88                 {
  89                         return base_stream.ReadByte ();
  90                 }
  91
  92                 public override long Seek (long offset, SeekOrigin origin)
  93                 {
  94                         return base_stream.Seek (offset, origin);
  95                 }
  96
  97                 public override void SetLength (long value)
  98                 {
  99                         base_stream.SetLength (value);
 100                 }
 101
 102                 public override void Write (byte [] buffer, int offset, int count)
 103                 {
 104                         base_stream.Write (buffer, offset, count);
 105                 }
 106
 107                 public override void WriteByte (byte value)
 108                 {
 109                         base_stream.WriteByte (value);
 110                 }
 111
 112                 public override IAsyncResult
 113                 BeginRead (byte [] buffer, int offset, int count, AsyncCallback cback, object state)
 114                 {
 115                         return base_stream.BeginRead (buffer, offset, count, cback, state);
 116                 }
 117
 118                 public override IAsyncResult
 119                 BeginWrite (byte [] buffer, int offset, int count, AsyncCallback cback, object state)
 120                 {
 121                         return base_stream.BeginWrite (buffer, offset, count, cback, state);
 122                 }
 123
 124                 public override int EndRead (IAsyncResult async_result)
 125                 {
 126                         return base_stream.EndRead (async_result);
 127                 }
 128
 129                 public override void EndWrite (IAsyncResult async_result)
 130                 {
 131                         base_stream.EndWrite (async_result);
 132                 }
 133         }
 134 }