aboutsummaryrefslogtreecommitdiff
path: root/payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/LZInWindow.h
diff options
context:
space:
mode:
Diffstat (limited to 'payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/LZInWindow.h')
-rw-r--r--payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/LZInWindow.h87
1 files changed, 0 insertions, 87 deletions
diff --git a/payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/LZInWindow.h b/payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/LZInWindow.h
deleted file mode 100644
index 670a570378..0000000000
--- a/payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/LZInWindow.h
+++ /dev/null
@@ -1,87 +0,0 @@
-// LZInWindow.h
-
-#ifndef __LZ_IN_WINDOW_H
-#define __LZ_IN_WINDOW_H
-
-#include "../../IStream.h"
-
-class CLZInWindow
-{
- Byte *_bufferBase; // pointer to buffer with data
- ISequentialInStream *_stream;
- UInt32 _posLimit; // offset (from _buffer) when new block reading must be done
- bool _streamEndWasReached; // if (true) then _streamPos shows real end of stream
- const Byte *_pointerToLastSafePosition;
-protected:
- Byte *_buffer; // Pointer to virtual Buffer begin
- UInt32 _blockSize; // Size of Allocated memory block
- UInt32 _pos; // offset (from _buffer) of curent byte
- UInt32 _keepSizeBefore; // how many BYTEs must be kept in buffer before _pos
- UInt32 _keepSizeAfter; // how many BYTEs must be kept buffer after _pos
- UInt32 _streamPos; // offset (from _buffer) of first not read byte from Stream
-
- void MoveBlock();
- HRESULT ReadBlock();
- void Free();
-public:
- CLZInWindow(): _bufferBase(0) {}
- virtual ~CLZInWindow() { Free(); }
-
- // keepSizeBefore + keepSizeAfter + keepSizeReserv < 4G)
- bool Create(UInt32 keepSizeBefore, UInt32 keepSizeAfter, UInt32 keepSizeReserv = (1<<17));
-
- void SetStream(ISequentialInStream *stream);
- HRESULT Init();
- // void ReleaseStream();
-
- Byte *GetBuffer() const { return _buffer; }
-
- const Byte *GetPointerToCurrentPos() const { return _buffer + _pos; }
-
- HRESULT MovePos()
- {
- _pos++;
- if (_pos > _posLimit)
- {
- const Byte *pointerToPostion = _buffer + _pos;
- if(pointerToPostion > _pointerToLastSafePosition)
- MoveBlock();
- return ReadBlock();
- }
- else
- return S_OK;
- }
- Byte GetIndexByte(Int32 index) const { return _buffer[(size_t)_pos + index]; }
-
- // index + limit have not to exceed _keepSizeAfter;
- // -2G <= index < 2G
- UInt32 GetMatchLen(Int32 index, UInt32 distance, UInt32 limit) const
- {
- if(_streamEndWasReached)
- if ((_pos + index) + limit > _streamPos)
- limit = _streamPos - (_pos + index);
- distance++;
- const Byte *pby = _buffer + (size_t)_pos + index;
- UInt32 i;
- for(i = 0; i < limit && pby[i] == pby[(size_t)i - distance]; i++);
- return i;
- }
-
- UInt32 GetNumAvailableBytes() const { return _streamPos - _pos; }
-
- void ReduceOffsets(Int32 subValue)
- {
- _buffer += subValue;
- _posLimit -= subValue;
- _pos -= subValue;
- _streamPos -= subValue;
- }
-
- bool NeedMove(UInt32 numCheckBytes)
- {
- UInt32 reserv = _pointerToLastSafePosition - (_buffer + _pos);
- return (reserv <= numCheckBytes);
- }
-};
-
-#endif