private void _FlushFinish()
{
// After writing a series of compressed buffers, each one closed
// with Flush.Sync, we now write the final one as Flush.Finish,
// and then stop.
byte[] buffer = new byte[128];
var compressor = new ZlibCodec();
int rc = compressor.InitializeDeflate(_compressLevel, false);
compressor.InputBuffer = null;
compressor.NextIn = 0;
compressor.AvailableBytesIn = 0;
compressor.OutputBuffer = buffer;
compressor.NextOut = 0;
compressor.AvailableBytesOut = buffer.Length;
rc = compressor.Deflate(FlushType.Finish);
if (rc != ZlibConstants.Z_STREAM_END && rc != ZlibConstants.Z_OK)
throw new Exception("deflating: " + compressor.Message);
if (buffer.Length - compressor.AvailableBytesOut > 0)
{
TraceOutput(TraceBits.EmitBegin,
"Emit begin flush bytes({0})",
buffer.Length - compressor.AvailableBytesOut);
_outStream.Write(buffer, 0, buffer.Length - compressor.AvailableBytesOut);
TraceOutput(TraceBits.EmitDone,
"Emit done flush");
}
compressor.EndDeflate();
_Crc32 = _runningCrc.Crc32Result;
}