unsafe void Write(byte *buffer, int count, LZMAAction action) { if (_mode == CompressionMode.Decompress) { throw new NotSupportedException("Can't write on a decompress stream!"); } _wasWrittenTo = true; _zstream->avail_in = (IntPtr)count; _zstream->next_in = buffer; do { var result = LZMANative.lzma_code(_zstream, action); var avail_out = _zstream->avail_out.ToInt32(); if (avail_out < BufferSize) { var outSize = BufferSize - avail_out; _compressedStream.Write(_tmpBuffer, 0, outSize); _zstream->next_out = _tmpBufferPtr; _zstream->avail_out = (IntPtr)BufferSize; } // Translate erros into specific exceptions switch (result) { case LZMAStatus.LZMA_OK: continue; case LZMAStatus.LZMA_STREAM_END: return; case LZMAStatus.LZMA_MEM_ERROR: case LZMAStatus.LZMA_MEMLIMIT_ERROR: throw new OutOfMemoryException("liblzma return code: " + result); default: throw new Exception("liblzma return code: " + result); } } while ((_zstream->avail_in.ToInt32() > 0) || action == LZMAAction.LZMA_FINISH); }
public unsafe int Read(byte *buffer, int length, int offset, int count) { if (_mode == CompressionMode.Compress) { throw new NotSupportedException("Can't read on a compress stream!"); } var exitLoop = false; _zstream->next_out = buffer + offset; _zstream->avail_out = (IntPtr)count; while (_zstream->avail_out.ToInt32() > 0 && exitLoop == false) { if (_zstream->avail_in.ToInt32() == 0) { var readLength = _compressedStream.Read(_tmpBuffer, 0, _tmpBuffer.Length); _zstream->avail_in = (IntPtr)readLength; _zstream->next_in = _tmpBufferPtr; } var result = LZMANative.lzma_code(_zstream, LZMAAction.LZMA_RUN); if (result == LZMAStatus.LZMA_OK) { continue; } switch (result) { case LZMAStatus.LZMA_STREAM_END: exitLoop = true; break; case LZMAStatus.LZMA_MEM_ERROR: case LZMAStatus.LZMA_MEMLIMIT_ERROR: throw new OutOfMemoryException("liblzma return code: " + result); default: throw new Exception("liblzma return code: " + result); } } return(count - (int)_zstream->avail_out); }