752d7d239a
Compiler output is identical before & after this step git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/branches/wizou@6036 212acab6-be3b-0410-9dea-997c60f758d6
74 lines
2.6 KiB
C++
74 lines
2.6 KiB
C++
//---------------------------------------------------------------------------
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// PatchGenerator.h
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//---------------------------------------------------------------------------
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// -=* VPatch *=-
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//---------------------------------------------------------------------------
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// Copyright (C) 2001-2005 Koen van de Sande / Van de Sande Productions
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//---------------------------------------------------------------------------
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// Website: http://www.tibed.net/vpatch
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would be
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// appreciated but is not required.
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// 2. Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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// 3. This notice may not be removed or altered from any source distribution.
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//
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// Reviewed for Unicode support by Jim Park -- 08/29/2007
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#if !defined(PatchGenerator_H)
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#define PatchGenerator_H
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#include <iostream>
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#include <vector>
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#include "GlobalTypes.h"
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#include "ChunkedFile.h"
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using namespace std;
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typedef struct SameBlock {
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TFileOffset sourceOffset;
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TFileOffset targetOffset;
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TFileOffset size;
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} SameBlock;
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class PatchGenerator {
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protected:
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bistream& source;
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TFileOffset sourceSize;
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bistream& target;
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TFileOffset targetSize;
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bostream& patch;
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// cache
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unsigned char* targetCData;
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TFileOffset targetCDataBaseOffset;
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TFileOffset targetCDataSize;
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SameBlock* findBlock(ChunkedFile* sourceTree,
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TFileOffset targetFileStartOffset);
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// SameBlock* findBlock(ChunkedFile* sourceTree, unsigned char* targetData, TFileOffset targetStartOffset);
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void improveSameBlockMatch(SameBlock& match, TFileOffset currentBest = 0);
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public:
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TFileOffset blockSize;
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int maxMatches;
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bool beVerbose;
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// load in the source, target streams
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PatchGenerator(bistream& source, TFileOffset sourceSize, bistream& target, TFileOffset targetSize, bostream& patch);
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~PatchGenerator();
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// construct the actual patch
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void execute(vector<SameBlock*>& sameBlocks);
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};
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#endif // PatchGenerator_H
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