src/TortoiseMerge/Patch.h

   1 // TortoiseMerge - a Diff/Patch program
   2
   3 // Copyright (C) 2006-2008 - TortoiseSVN
   4 // Copyright (C) 2012 - Sven Strickroth <email@cs-ware.de>
   5
   6 // This program is free software; you can redistribute it and/or
   7 // modify it under the terms of the GNU General Public License
   8 // as published by the Free Software Foundation; either version 2
   9 // of the License, or (at your option) any later version.
  10
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software Foundation,
  18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 //
  20 #pragma once
  21 #include "FileTextLines.h"
  22
  23
  24 #define PATCHSTATE_REMOVED      0
  25 #define PATCHSTATE_ADDED        1
  26 #define PATCHSTATE_CONTEXT      2
  27
  28 /**
  29  * \ingroup TortoiseMerge
  30  *
  31  * Handles unified diff files, parses them and also is able to
  32  * apply those diff files.
  33  */
  34 class CPatch
  35 {
  36 public:
  37         CPatch(void);
  38         ~CPatch(void);
  39
  40         BOOL            OpenUnifiedDiffFile(const CString& filename);
  41         BOOL            PatchFile(const int nIndex, const CString& sPath, const CString& sSavePath = _T(""), const CString& sBaseFile = _T(""), const bool force = false);
  42         int                     GetNumberOfFiles() const  {return m_arFileDiffs.GetCount();}
  43         CString         GetFilename(int nIndex);
  44         CString         GetRevision(int nIndex);
  45         CString         GetFilename2(int nIndex);
  46         CString         GetRevision2(int nIndex);
  47         CString         GetFullPath(const CString& sPath, int nIndex, int fileno = 0);
  48         CString         GetErrorMessage() const  {return m_sErrorMessage;}
  49         CString         CheckPatchPath(const CString& path);
  50
  51         /**
  52          * Returns TRUE if stripping prefixes from the paths in the patch file
  53          * allows the patch file to being applied. The variable m_nStrip is then set appropriately.
  54          * Returns FALSE if stripping prefixes doesn't help. The variable m_nStrip is set to 0.
  55          */
  56         BOOL            StripPrefixes(const CString& path);
  57 protected:
  58         void            FreeMemory();
  59         BOOL            HasExpandedKeyWords(const CString& line);
  60         int                     CountMatches(const CString& path);
  61         int                     CountDirMatches(const CString& path);
  62         CString         RemoveUnicodeBOM(const CString& str);
  63
  64         BOOL            ParserGitPatch(CFileTextLines &PatchLines,int nIndex);
  65
  66         /**
  67          * Strips the filename by removing m_nStrip prefixes.
  68          */
  69         CString         Strip(const CString& filename);
  70         struct Chunk
  71         {
  72                 LONG                                    lRemoveStart;
  73                 LONG                                    lRemoveLength;
  74                 LONG                                    lAddStart;
  75                 LONG                                    lAddLength;
  76                 CStdCStringArray                arLines;
  77                 CStdDWORDArray                  arLinesStates;
  78                 std::vector<EOL>                arEOLs;
  79         };
  80
  81         struct Chunks
  82         {
  83                 CString                                 sFilePath;
  84                 CString                                 sRevision;
  85                 CString                                 sFilePath2;
  86                 CString                                 sRevision2;
  87                 CStdArray<Chunk*>               chunks;
  88         };
  89
  90         CStdArray<Chunks*>                      m_arFileDiffs;
  91         CString                                         m_sErrorMessage;
  92         CFileTextLines::UnicodeType m_UnicodeType;
  93
  94         /**
  95          * Defines how many prefixes are removed from the paths in the
  96          * patch file. This allows applying patches which contain absolute
  97          * paths or a prefix which differs in the patch and the working copy.
  98          * Example: A filename like "/home/ts/my-working-copy/dir/file.txt"
  99          * stripped by 4 prefixes is interpreted as "dir/file.txt"
 100          */
 101         int                                                     m_nStrip;
 102 public:
 103         bool                                            m_IsGitPatch;
 104 };