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This commit is contained in:
Igor Pavlov
2005-05-30 00:00:00 +00:00
committed by Kornel Lesiński
parent 8c1b5c7b7e
commit 3c510ba80b
926 changed files with 40559 additions and 23519 deletions
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90
7zip/Compress/LZ/LZOutWindow.h
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@@ -1,78 +1,72 @@
// LZOutWindow.h
// #pragma once
#ifndef __LZ_OUT_WINDOW_H
#define __LZ_OUT_WINDOW_H
#include "../../IStream.h"
// m_KeepSizeBefore: how mach BYTEs must be in buffer before _pos;
// m_KeepSizeAfter: how mach BYTEs must be in buffer after _pos;
// m_KeepSizeReserv: how mach BYTEs must be in buffer for Moving Reserv;
// must be >= aKeepSizeAfter; // test it
#ifndef _NO_EXCEPTIONS
class CLZOutWindowException
{
public:
HRESULT ErrorCode;
CLZOutWindowException(HRESULT errorCode): ErrorCode(errorCode) {}
};
#endif
class CLZOutWindow
{
BYTE *_buffer;
UINT32 _pos;
UINT32 _windowSize;
UINT32 _streamPos;
Byte *_buffer;
UInt32 _pos;
UInt32 _windowSize;
UInt32 _streamPos;
ISequentialOutStream *_stream;
void FlushWithCheck();
public:
#ifdef _NO_EXCEPTIONS
HRESULT ErrorCode;
#endif
void Free();
CLZOutWindow(): _buffer(0), _stream(0) {}
~CLZOutWindow();
void Create(UINT32 windowSize);
bool IsCreated() const { return _buffer != 0; }
void Init(ISequentialOutStream *stream, bool solid = false);
HRESULT Flush();
// void ReleaseStream();
~CLZOutWindow() { Free(); /* ReleaseStream(); */ }
bool Create(UInt32 windowSize);
// UINT32 GetCurPos() const { return _pos; }
// const BYTE *GetPointerToCurrentPos() const { return _buffer + _pos;};
void CopyBackBlock(UINT32 distance, UINT32 len)
void SetStream(ISequentialOutStream *stream);
void Init(bool solid = false);
HRESULT Flush();
void ReleaseStream();
void CopyBlock(UInt32 distance, UInt32 len)
{
UINT32 pos = _pos - distance - 1;
if (pos >= _windowSize)
pos += _windowSize;
for(; len > 0; len--)
{
if (pos >= _windowSize)
pos = 0;
_buffer[_pos++] = _buffer[pos++];
if (_pos >= _windowSize)
FlushWithCheck();
// PutOneByte(GetOneByte(0 - distance));
}
UInt32 pos = _pos - distance - 1;
if (pos >= _windowSize)
pos += _windowSize;
for(; len > 0; len--)
{
if (pos >= _windowSize)
pos = 0;
_buffer[_pos++] = _buffer[pos++];
if (_pos >= _windowSize)
FlushWithCheck();
// PutOneByte(GetOneByte(distance));
}
}
void PutOneByte(BYTE b)
void PutByte(Byte b)
{
_buffer[_pos++] = b;
if (_pos >= _windowSize)
FlushWithCheck();
_buffer[_pos++] = b;
if (_pos >= _windowSize)
FlushWithCheck();
}
BYTE GetOneByte(UINT32 index) const
Byte GetByte(UInt32 distance) const
{
UINT32 pos = _pos + index;
if (pos >= _windowSize)
pos += _windowSize;
return _buffer[pos];
UInt32 pos = _pos - distance - 1;
if (pos >= _windowSize)
pos += _windowSize;
return _buffer[pos];
}
// BYTE *GetBuffer() const { return _buffer; }
};
#endif