public override long Seek(long offset, SeekOrigin origin)
{
if (!this.CanSeek)
{
throw new InvalidOperationException();
}
ThreadSafeStream.Node node = this.GetNode();
long num = 0L;
switch (origin)
{
case SeekOrigin.Begin:
num = offset;
break;
case SeekOrigin.Current:
num = node.Position + offset;
break;
case SeekOrigin.End:
num = this.Length + offset;
break;
}
if (num < 0L || num > this.Length)
{
throw new ArgumentOutOfRangeException("offset");
}
else
{
return(node.Position = num);
}
}
public override void Write(byte[] buffer, int offset, int count)
{
ThreadSafeStream.Node node = this.GetNode();
lock (this._streamLock)
{
if (this._baseStream.Position != node.Position)
{
this._baseStream.Position = node.Position;
}
this._baseStream.Write(buffer, offset, count);
this._length = this._baseStream.Length;
}
node.Position += (long)count;
}
public override int Read(byte[] buffer, int offset, int count)
{
ThreadSafeStream.Node node = this.GetNode();
int num;
lock (this._streamLock)
{
if (this._baseStream.Position != node.Position)
{
this._baseStream.Position = node.Position;
}
num = this._baseStream.Read(buffer, offset, count);
}
node.Position += (long)num;
return(num);
}