MoonTools.NETPhysFS/SharpPhysFS/PhysFSStream.cs

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using System;
using System.IO;
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namespace SharpPhysFS
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{
public class PhysFSStream : Stream
{
private IntPtr handle;
private readonly bool readOnly;
private readonly PhysFS physFS;
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internal PhysFSStream(PhysFS pfs, IntPtr ptr, bool readOnly)
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{
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handle = ptr;
this.readOnly = readOnly;
physFS = pfs;
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}
public override bool CanRead
{
get
{
return true;
}
}
public override bool CanSeek
{
get
{
return true;
}
}
public override bool CanWrite
{
get
{
return !readOnly;
}
}
public override void Flush()
{
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PhysFS.LowLevel.Flush(handle, physFS);
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}
public override long Length
{
get
{
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return PhysFS.LowLevel.FileLength(handle);
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}
}
public override long Position
{
get
{
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return PhysFS.LowLevel.Tell(handle);
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}
set
{
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PhysFS.LowLevel.Seek(handle, (ulong)value, physFS);
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}
}
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public long Read(byte[] buffer, int offset, uint count)
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{
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return PhysFS.LowLevel.Read(handle, buffer, 1, count, offset);
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}
public override int Read(byte[] buffer, int offset, int count)
{
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return (int)Read(buffer, offset, (uint)count);
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}
public override long Seek(long offset, SeekOrigin origin)
{
long pos;
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if (origin == SeekOrigin.Begin)
pos = 0;
else if (origin == SeekOrigin.Current)
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pos = PhysFS.LowLevel.Tell(handle);
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else
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pos = PhysFS.LowLevel.FileLength(handle);
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PhysFS.LowLevel.Seek(handle, (ulong)(pos + offset), physFS);
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return pos + offset;
}
public long Write(byte[] buffer, uint offset, uint count)
{
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return PhysFS.LowLevel.Write(handle, buffer, 1, count);
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}
public override void Write(byte[] buffer, int offset, int count)
{
Write(buffer, (uint)offset, (uint)count);
}
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public override void SetLength(long value)
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{
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throw new NotImplementedException();
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}
protected override void Dispose(bool disposing)
{
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if(disposing)
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{
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if (handle != IntPtr.Zero)
{
PhysFS.LowLevel.Close(handle, physFS);
handle = IntPtr.Zero;
}
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}
base.Dispose(disposing);
}
}
}