public override void Write(System.Byte[] buffer, int offset, int count)
{
// workitem 7159
// calculate the CRC on the unccompressed data (before writing)
if (crc != null)
{
crc.SlurpBlock(buffer, offset, count);
}
if (_streamMode == StreamMode.Undefined)
{
_streamMode = StreamMode.Writer;
}
else if (_streamMode != StreamMode.Writer)
{
throw new ZlibException("Cannot Write after Reading.");
}
if (count == 0)
{
return;
}
// first reference of z property will initialize the private var _z
z.InputBuffer = buffer;
_z.NextIn = offset;
_z.AvailableBytesIn = count;
bool done = false;
do
{
_z.OutputBuffer = workingBuffer;
_z.NextOut = 0;
_z.AvailableBytesOut = _workingBuffer.Length;
int rc = (_wantCompress)
? _z.Deflate(_flushMode)
: _z.Inflate(_flushMode);
if (rc != ZlibConstants.Z_OK && rc != ZlibConstants.Z_STREAM_END)
{
throw new ZlibException((_wantCompress ? "de" : "in") + "flating: " + _z.Message);
}
//if (_workingBuffer.Length - _z.AvailableBytesOut > 0)
_stream.Write(_workingBuffer, 0, _workingBuffer.Length - _z.AvailableBytesOut);
done = _z.AvailableBytesIn == 0 && _z.AvailableBytesOut != 0;
// If GZIP and de-compress, we're done when 8 bytes remain.
if (_flavor == ZlibStreamFlavor.GZIP && !_wantCompress)
{
done = (_z.AvailableBytesIn == 8 && _z.AvailableBytesOut != 0);
}
}while (!done);
}
public override void Write(byte[] buffer, int offset, int count)
{
if (crc != null)
{
crc.SlurpBlock(buffer, offset, count);
}
if (_streamMode == StreamMode.Undefined)
{
_streamMode = StreamMode.Writer;
}
else if (_streamMode != 0)
{
throw new ZlibException("Cannot Write after Reading.");
}
if (count == 0)
{
return;
}
z.InputBuffer = buffer;
_z.NextIn = offset;
_z.AvailableBytesIn = count;
bool flag = false;
while (true)
{
_z.OutputBuffer = workingBuffer;
_z.NextOut = 0;
_z.AvailableBytesOut = _workingBuffer.Length;
int num = (!_wantCompress) ? _z.Inflate(_flushMode) : _z.Deflate(_flushMode);
if (num != 0 && num != 1)
{
break;
}
_stream.Write(_workingBuffer, 0, _workingBuffer.Length - _z.AvailableBytesOut);
flag = (_z.AvailableBytesIn == 0 && _z.AvailableBytesOut != 0);
if (_flavor == ZlibStreamFlavor.GZIP && !_wantCompress)
{
flag = (_z.AvailableBytesIn == 8 && _z.AvailableBytesOut != 0);
}
if (flag)
{
return;
}
}
throw new ZlibException(((!_wantCompress) ? "in" : "de") + "flating: " + _z.Message);
}
internal int SetParams(CompressionLevel level, CompressionStrategy strategy)
{
int result = 0;
if (compressionLevel != level)
{
Config config = Config.Lookup(level);
if (config.Flavor != this.config.Flavor && _codec.TotalBytesIn != 0L)
{
result = _codec.Deflate(FlushType.Partial);
}
compressionLevel = level;
this.config = config;
SetDeflater();
}
compressionStrategy = strategy;
return(result);
}