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// LZOutWindow.cpp
#include "StdAfx.h"
#include "../../../Common/Alloc.h"
#include "LZOutWindow.h"
bool CLZOutWindow::Create(UInt32 windowSize)
{
const UInt32 kMinBlockSize = 1;
if (windowSize < kMinBlockSize)
windowSize = kMinBlockSize;
if (_buffer != 0 && _windowSize == windowSize)
return true;
// It's here to allow Solid decoding / and calling Create for RAR
_pos = 0;
_streamPos = 0;
Free();
_windowSize = windowSize;
_buffer = (Byte *)::BigAlloc(windowSize);
return (_buffer != 0);
}
void CLZOutWindow::Free()
{
::BigFree(_buffer);
_buffer = 0;
}
void CLZOutWindow::SetStream(ISequentialOutStream *stream)
{
ReleaseStream();
_stream = stream;
_stream->AddRef();
}
void CLZOutWindow::Init(bool solid)
{
if(!solid)
{
_streamPos = 0;
_pos = 0;
}
#ifdef _NO_EXCEPTIONS
ErrorCode = S_OK;
#endif
}
void CLZOutWindow::ReleaseStream()
{
if(_stream != 0)
{
// Flush(); // Test it
_stream->Release();
_stream = 0;
}
}
void CLZOutWindow::FlushWithCheck()
{
HRESULT result = Flush();
#ifdef _NO_EXCEPTIONS
ErrorCode = result;
#else
if (result != S_OK)
throw CLZOutWindowException(result);
#endif
}
HRESULT CLZOutWindow::Flush()
{
UInt32 size = _pos - _streamPos;
if(size == 0)
return S_OK;
#ifdef _NO_EXCEPTIONS
if (ErrorCode != S_OK)
return ErrorCode;
#endif
if(_stream != 0)
{
UInt32 processedSize;
HRESULT result = _stream->Write(_buffer + _streamPos, size, &processedSize);
if (result != S_OK)
return result;
if (size != processedSize)
return E_FAIL;
}
if (_pos >= _windowSize)
_pos = 0;
_streamPos = _pos;
return S_OK;
}
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