src/TortoiseProc/gitlogcache.h

   1 #pragma once
   2
   3 #include "Git.h"
   4 #include "TGitPath.h"
   5 #include "GitRev.h"
   6
   7 #define LOG_INDEX_MAGIC         0x88445566
   8 #define LOG_DATA_MAGIC          0x99aa00FF
   9 #define LOG_DATA_ITEM_MAGIC 0x0F8899CC
  10 #define LOG_DATA_FILE_MAGIC 0x19999FFF
  11 #define LOG_INDEX_VERSION   0x4
  12
  13 struct SLogCacheIndexHeader
  14 {
  15         DWORD m_Magic;
  16         DWORD m_Version;
  17         DWORD m_ItemCount;
  18 };
  19
  20 struct SLogCacheItem
  21 {
  22         BYTE  m_Hash[40];
  23         ULONGLONG m_Offset;
  24 };
  25
  26 struct SLogCacheRevFileHeader
  27 {
  28         DWORD m_Magic;
  29         DWORD m_Version;
  30 };
  31
  32 struct SLogCacheRevItemHeader
  33 {
  34         DWORD m_Magic;
  35         DWORD m_Version;
  36         DWORD m_FileCount;
  37 };
  38
  39 #define INDEX_FILE_NAME _T("tortoisegit.index")
  40 #define DATA_FILE_NAME _T("tortoisegit.data")
  41 #define LOCK_FILE_NAME _T("tortoisegit.lock")
  42
  43 class CLogCache
  44 {
  45 protected:
  46         CFile m_IndexFile;
  47         CFile m_DataFile;
  48         CFile m_LockFile;
  49
  50         BOOL CheckHeader(SLogCacheIndexHeader &header)
  51         {
  52                 if(header.m_Magic != LOG_INDEX_MAGIC)
  53                         return FALSE;
  54
  55                 if(header.m_Version != LOG_INDEX_VERSION)
  56                         return FALSE;
  57
  58                 return TRUE;
  59         }
  60
  61         BOOL CheckHeader(SLogCacheRevFileHeader &header)
  62         {
  63                 if(header.m_Magic != LOG_DATA_MAGIC)
  64                         return FALSE;
  65
  66                 if(header.m_Version != LOG_INDEX_VERSION)
  67                         return FALSE;
  68
  69                 return TRUE;
  70         }
  71
  72         BOOL CheckHeader(SLogCacheRevItemHeader &header)
  73         {
  74                 if(header.m_Magic != LOG_DATA_ITEM_MAGIC)
  75                         return FALSE;
  76
  77                 if(header.m_Version != LOG_INDEX_VERSION)
  78                         return FALSE;
  79
  80                 return TRUE;
  81         }
  82
  83         int SaveOneItem(GitRev &Rev,ULONGLONG offset);
  84         int LoadOneItem(GitRev &Rev,ULONGLONG offset);
  85         CString m_GitDir;
  86         int RebuildCacheFile();
  87
  88 public:
  89         CLogCache();
  90         ~CLogCache();
  91         int FetchCacheIndex(CString GitDir);
  92         std::vector<GitRev> m_NewCacheEntry;
  93         std::map<CString, ULONGLONG> m_HashMapIndex;
  94         int GetCacheData(GitRev &Rev);
  95         int AddCacheEntry(GitRev &Rev);
  96         int SaveCache();
  97
  98
  99 };