diff options
Diffstat (limited to 'CPP/7zip/Common/InBuffer.h')
-rwxr-xr-x | CPP/7zip/Common/InBuffer.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/CPP/7zip/Common/InBuffer.h b/CPP/7zip/Common/InBuffer.h new file mode 100755 index 00000000..057caa16 --- /dev/null +++ b/CPP/7zip/Common/InBuffer.h @@ -0,0 +1,76 @@ +// InBuffer.h + +#ifndef __INBUFFER_H +#define __INBUFFER_H + +#include "../IStream.h" +#include "../../Common/MyCom.h" + +#ifndef _NO_EXCEPTIONS +class CInBufferException +{ +public: + HRESULT ErrorCode; + CInBufferException(HRESULT errorCode): ErrorCode(errorCode) {} +}; +#endif + +class CInBuffer +{ + Byte *_buffer; + Byte *_bufferLimit; + Byte *_bufferBase; + CMyComPtr<ISequentialInStream> _stream; + UInt64 _processedSize; + UInt32 _bufferSize; + bool _wasFinished; + + bool ReadBlock(); + Byte ReadBlock2(); + +public: + #ifdef _NO_EXCEPTIONS + HRESULT ErrorCode; + #endif + + CInBuffer(); + ~CInBuffer() { Free(); } + + bool Create(UInt32 bufferSize); + void Free(); + + void SetStream(ISequentialInStream *stream); + void Init(); + void ReleaseStream() { _stream.Release(); } + + bool ReadByte(Byte &b) + { + if(_buffer >= _bufferLimit) + if(!ReadBlock()) + return false; + b = *_buffer++; + return true; + } + Byte ReadByte() + { + if(_buffer >= _bufferLimit) + return ReadBlock2(); + return *_buffer++; + } + void ReadBytes(void *data, UInt32 size, UInt32 &processedSize) + { + for(processedSize = 0; processedSize < size; processedSize++) + if (!ReadByte(((Byte *)data)[processedSize])) + return; + } + bool ReadBytes(void *data, UInt32 size) + { + UInt32 processedSize; + ReadBytes(data, size, processedSize); + return (processedSize == size); + } + UInt64 GetProcessedSize() const { return _processedSize + (_buffer - _bufferBase); } + bool WasFinished() const { return _wasFinished; } +}; + +#endif |