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-rwxr-xr-xSource/7zip/7zip/Compress/LZ/LZInWindow.h204
1 files changed, 102 insertions, 102 deletions
diff --git a/Source/7zip/7zip/Compress/LZ/LZInWindow.h b/Source/7zip/7zip/Compress/LZ/LZInWindow.h
index 1bafd1a..4d6c5fe 100755
--- a/Source/7zip/7zip/Compress/LZ/LZInWindow.h
+++ b/Source/7zip/7zip/Compress/LZ/LZInWindow.h
@@ -1,102 +1,102 @@
-/*
- * LZInWindow.h
- *
- * This file is a part of LZMA compression module for NSIS.
- *
- * Original LZMA SDK Copyright (C) 1999-2006 Igor Pavlov
- * Modifications Copyright (C) 2003-2006 Amir Szekely <kichik@netvision.net.il>
- *
- * Licensed under the Common Public License version 1.0 (the "License");
- * you may not use this file except in compliance with the License.
- *
- * Licence details can be found in the file COPYING.
- *
- * This software is provided 'as-is', without any express or implied
- * warranty.
- */
-
-#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
+/*
+ * LZInWindow.h
+ *
+ * This file is a part of LZMA compression module for NSIS.
+ *
+ * Original LZMA SDK Copyright (C) 1999-2006 Igor Pavlov
+ * Modifications Copyright (C) 2003-2006 Amir Szekely <kichik@netvision.net.il>
+ *
+ * Licensed under the Common Public License version 1.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ *
+ * Licence details can be found in the file COPYING.
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.
+ */
+
+#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