70 lines
1.8 KiB
C#
70 lines
1.8 KiB
C#
using System.IO;
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namespace BizHawk.Common
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{
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/// <summary>
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/// This stream redirects all operations to another stream, specified by the user
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/// You might think you can do this just by changing out the stream instance you operate on, but this was built to facilitate some features which were never built:
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/// The ability to have the old stream automatically flushed, or for a derived class to manage two streams at a higher level and use these facilities to switch them
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/// without this subclass's clients knowing about the existence of two streams.
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/// Well, it could be useful, so here it is.
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/// </summary>
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public class SwitcherStream : Stream
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{
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// switchstream method? flush old stream?
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private Stream _currStream;
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public SwitcherStream()
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{
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}
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public override bool CanRead { get { return _currStream.CanRead; } }
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public override bool CanSeek { get { return _currStream.CanSeek; } }
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public override bool CanWrite { get { return _currStream.CanWrite; } }
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public override long Length { get { return _currStream.Length; } }
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public override long Position
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{
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get
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{
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return _currStream.Position;
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}
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set
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{
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_currStream.Position = Position;
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}
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}
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public void SetCurrStream(Stream str)
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{
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_currStream = str;
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}
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public override void Flush()
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{
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_currStream.Flush();
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}
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public override int Read(byte[] buffer, int offset, int count)
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{
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return _currStream.Read(buffer, offset, count);
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}
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public override long Seek(long offset, SeekOrigin origin)
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{
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return _currStream.Seek(offset, origin);
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}
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public override void SetLength(long value)
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{
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_currStream.SetLength(value);
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}
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public override void Write(byte[] buffer, int offset, int count)
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{
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_currStream.Write(buffer, offset, count);
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}
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}
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} |