public FileHandleDataSource(PhpStream handle, int flength)
{
this.handle = handle;
this.flength = flength;
//TODO : Replace memorystream with a better reading/seeking class
PhpBytes data;
if (flength > 0)
{
data = handle.ReadBytes(flength);
}
else
{
data = handle.ReadBinaryContents(-1);
}
this.m_ms = new MemoryStream(data.ReadonlyData);
}
private void Callback(IAsyncResult ar)
{
if (access == StreamAccessOptions.Read)
{
int count = stream.EndRead(ar);
if (count > 0)
{
if (count != buffer.Length)
{
// TODO: improve streams
var buf = new byte[count];
Buffer.BlockCopy(buffer, 0, buf, 0, count);
phpStream.WriteBytes(buf);
}
else
{
phpStream.WriteBytes(buffer);
}
stream.BeginRead(buffer, 0, buffer.Length, callback, ar.AsyncState);
}
else
{
phpStream.Flush();
stream.Dispose();
}
}
else
{
buffer = phpStream.ReadBytes(BufferSize);
if (buffer != null)
{
stream.BeginWrite(buffer, 0, buffer.Length, callback, ar.AsyncState);
}
else
{
stream.EndWrite(ar);
stream.Dispose();
}
}
}
public static bool BeginIO(Stream stream, PhpStream phpStream, StreamAccessOptions access, int desc_no)
{
if (access == StreamAccessOptions.Read && !phpStream.CanWrite ||
access == StreamAccessOptions.Write && !phpStream.CanRead)
{
PhpException.Throw(PhpError.Warning, Resources.LibResources.descriptor_item_invalid_mode, desc_no.ToString());
return(false);
}
var pipe = new ActivePipe
{
stream = stream,
phpStream = phpStream,
access = access
};
pipe.callback = new AsyncCallback(pipe.Callback);
if (access == StreamAccessOptions.Read)
{
var buffer = new byte[BufferSize];
stream.BeginRead(buffer, 0, buffer.Length, pipe.callback, null);
pipe.buffer = buffer;
}
else
{
pipe.buffer = phpStream.ReadBytes(BufferSize);
if (pipe.buffer != null)
{
stream.BeginWrite(pipe.buffer, 0, pipe.buffer.Length, pipe.callback, null);
}
else
{
stream.Dispose();
}
}
return(true);
}
public static bool BeginIO(Stream stream, PhpStream phpStream, StreamAccessOptions access, int desc_no)
{
if (access == StreamAccessOptions.Read && !phpStream.CanWrite ||
access == StreamAccessOptions.Write && !phpStream.CanRead)
{
PhpException.Throw(PhpError.Warning, LibResources.GetString("descriptor_item_invalid_mode", desc_no));
return(false);
}
ActivePipe pipe = new ActivePipe();
pipe.stream = stream;
pipe.phpStream = phpStream;
pipe.access = access;
pipe.callback = new AsyncCallback(pipe.Callback);
if (access == StreamAccessOptions.Read)
{
var buffer = new byte[BufferSize];
stream.BeginRead(buffer, 0, buffer.Length, pipe.callback, null);
pipe.buffer = new PhpBytes(buffer);
}
else
{
pipe.buffer = phpStream.ReadBytes(BufferSize);
if (pipe.buffer != null)
{
stream.BeginWrite(pipe.buffer.ReadonlyData, 0, pipe.buffer.Length, pipe.callback, null);
}
else
{
stream.Close();
}
}
return(true);
}
