diff options
Diffstat (limited to '3rdparty/lzma/CPP/7zip/Common/OutBuffer.cpp')
-rw-r--r-- | 3rdparty/lzma/CPP/7zip/Common/OutBuffer.cpp | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/3rdparty/lzma/CPP/7zip/Common/OutBuffer.cpp b/3rdparty/lzma/CPP/7zip/Common/OutBuffer.cpp new file mode 100644 index 00000000000..2e5debd8335 --- /dev/null +++ b/3rdparty/lzma/CPP/7zip/Common/OutBuffer.cpp @@ -0,0 +1,116 @@ +// OutBuffer.cpp + +#include "StdAfx.h" + +#include "../../../C/Alloc.h" + +#include "OutBuffer.h" + +bool COutBuffer::Create(UInt32 bufferSize) +{ + const UInt32 kMinBlockSize = 1; + if (bufferSize < kMinBlockSize) + bufferSize = kMinBlockSize; + if (_buffer != 0 && _bufferSize == bufferSize) + return true; + Free(); + _bufferSize = bufferSize; + _buffer = (Byte *)::MidAlloc(bufferSize); + return (_buffer != 0); +} + +void COutBuffer::Free() +{ + ::MidFree(_buffer); + _buffer = 0; +} + +void COutBuffer::SetStream(ISequentialOutStream *stream) +{ + _stream = stream; +} + +void COutBuffer::Init() +{ + _streamPos = 0; + _limitPos = _bufferSize; + _pos = 0; + _processedSize = 0; + _overDict = false; + #ifdef _NO_EXCEPTIONS + ErrorCode = S_OK; + #endif +} + +UInt64 COutBuffer::GetProcessedSize() const +{ + UInt64 res = _processedSize + _pos - _streamPos; + if (_streamPos > _pos) + res += _bufferSize; + return res; +} + + +HRESULT COutBuffer::FlushPart() +{ + // _streamPos < _bufferSize + UInt32 size = (_streamPos >= _pos) ? (_bufferSize - _streamPos) : (_pos - _streamPos); + HRESULT result = S_OK; + #ifdef _NO_EXCEPTIONS + result = ErrorCode; + #endif + if (_buffer2 != 0) + { + memmove(_buffer2, _buffer + _streamPos, size); + _buffer2 += size; + } + + if (_stream != 0 + #ifdef _NO_EXCEPTIONS + && (ErrorCode == S_OK) + #endif + ) + { + UInt32 processedSize = 0; + result = _stream->Write(_buffer + _streamPos, size, &processedSize); + size = processedSize; + } + _streamPos += size; + if (_streamPos == _bufferSize) + _streamPos = 0; + if (_pos == _bufferSize) + { + _overDict = true; + _pos = 0; + } + _limitPos = (_streamPos > _pos) ? _streamPos : _bufferSize; + _processedSize += size; + return result; +} + +HRESULT COutBuffer::Flush() +{ + #ifdef _NO_EXCEPTIONS + if (ErrorCode != S_OK) + return ErrorCode; + #endif + + while(_streamPos != _pos) + { + HRESULT result = FlushPart(); + if (result != S_OK) + return result; + } + return S_OK; +} + +void COutBuffer::FlushWithCheck() +{ + HRESULT result = Flush(); + #ifdef _NO_EXCEPTIONS + ErrorCode = result; + #else + if (result != S_OK) + throw COutBufferException(result); + #endif +} |