src/Git/gitindex.h

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2008-2012 - TortoiseGit
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19
  20 #include "GitHash.h"
  21 #include "gitdll.h"
  22 #include "gitstatus.h"
  23 #include "SharedMutex.h"
  24 #include "git2.h"
  25
  26 class CGitIndex
  27 {
  28 public:
  29         CString    m_FileName;
  30         __time64_t      m_ModifyTime;
  31         unsigned short m_Flags;
  32         CGitHash        m_IndexHash;
  33
  34         int Print();
  35 };
  36
  37 class CGitIndexList:public std::vector<CGitIndex>
  38 {
  39 protected:
  40
  41 public:
  42         __time64_t  m_LastModifyTime;
  43
  44         CGitIndexList();
  45         ~CGitIndexList();
  46
  47         int ReadIndex(CString file);
  48         int GetStatus(const CString &gitdir, const CString &path, git_wc_status_kind * status, BOOL IsFull=false, BOOL IsRecursive=false, FIll_STATUS_CALLBACK callback = NULL, void *pData = NULL,CGitHash *pHash=NULL, bool * assumeValid = NULL, bool * skipWorktree = NULL);
  49 protected:
  50         bool m_bCheckContent;
  51         CComCriticalSection m_critRepoSec;
  52         git_repository * repository;
  53         int GetFileStatus(const CString &gitdir, const CString &path, git_wc_status_kind * status, __int64 time, FIll_STATUS_CALLBACK callback = NULL, void *pData = NULL, CGitHash *pHash = NULL, bool * assumeValid = NULL, bool * skipWorktree = NULL);
  54         int GetDirStatus(const CString &gitdir,const CString &path, git_wc_status_kind * status,__int64 time,FIll_STATUS_CALLBACK callback=NULL,void *pData=NULL,CGitHash *pHash=NULL);
  55 };
  56
  57 typedef std::tr1::shared_ptr<CGitIndexList> SHARED_INDEX_PTR;
  58 typedef CComCritSecLock<CComCriticalSection> CAutoLocker;
  59
  60 class CGitIndexFileMap:public std::map<CString, SHARED_INDEX_PTR>
  61 {
  62 public:
  63         CComCriticalSection                     m_critIndexSec;
  64
  65         CGitIndexFileMap() { m_critIndexSec.Init(); }
  66         ~CGitIndexFileMap() { m_critIndexSec.Term(); }
  67
  68         SHARED_INDEX_PTR SafeGet(const CString &path)
  69         {
  70                 CString thePath = path;
  71                 thePath.MakeLower();
  72                 CAutoLocker lock(m_critIndexSec);
  73                 if(this->find(thePath) == end())
  74                         return SHARED_INDEX_PTR();
  75                 else
  76                         return (*this)[thePath];
  77         }
  78
  79         void SafeSet(const CString &path, SHARED_INDEX_PTR ptr)
  80         {
  81                 CString thePath = path;
  82                 thePath.MakeLower();
  83                 CAutoLocker lock(m_critIndexSec);
  84                 (*this)[thePath] = ptr;
  85         }
  86
  87         int Check(const CString &gitdir, bool *isChanged);
  88         int LoadIndex(const CString &gitdir);
  89
  90         bool CheckAndUpdate(const CString &gitdir,bool isLoadUpdatedIndex)
  91         {
  92                 bool isChanged=false;
  93                 if(isLoadUpdatedIndex && Check(gitdir,&isChanged))
  94                         return false;
  95
  96                 if(isChanged && isLoadUpdatedIndex)
  97                 {
  98                         LoadIndex(gitdir);
  99                         return true;
 100                 }
 101
 102                 return false;
 103         }
 104         int GetFileStatus(const CString &gitdir,const CString &path,git_wc_status_kind * status,
 105                                                         BOOL IsFull=false, BOOL IsRecursive=false,
 106                                                         FIll_STATUS_CALLBACK callback=NULL,
 107                                                         void *pData=NULL,CGitHash *pHash=NULL,
 108                                                         bool isLoadUpdatedIndex = true, bool * assumeValid = NULL, bool * skipWorktree = NULL);
 109
 110         int IsUnderVersionControl(const CString &gitdir,
 111                                                           const CString &path,
 112                                                           bool isDir,
 113                                                           bool *isVersion,
 114                                                           bool isLoadUpdateIndex=true);
 115 };
 116
 117
 118 class CGitTreeItem
 119 {
 120 public:
 121         CString m_FileName;
 122         CGitHash        m_Hash;
 123         int                     m_Flags;
 124 };
 125
 126 /* After object create, never change field agains
 127  * that needn't lock to get field
 128 */
 129 class CGitHeadFileList:public std::vector<CGitTreeItem>
 130 {
 131 private:
 132
 133         int GetPackRef(const CString &gitdir);
 134         SharedMutex     m_SharedMutex;
 135
 136 public:
 137         __time64_t  m_LastModifyTimeHead;
 138         __time64_t  m_LastModifyTimeRef;
 139         __time64_t      m_LastModifyTimePackRef;
 140
 141         CString         m_HeadRefFile;
 142         CGitHash        m_Head;
 143         CString         m_HeadFile;
 144         CString         m_Gitdir;
 145         CString         m_PackRefFile;
 146
 147         CGitHash        m_TreeHash; /* buffered tree hash value */
 148
 149         std::map<CString,CGitHash> m_PackRefMap;
 150
 151         CGitHeadFileList()
 152         {
 153                 m_LastModifyTimeHead=0;
 154                 m_LastModifyTimeRef=0;
 155                 m_LastModifyTimePackRef = 0;
 156                 m_SharedMutex.Init();
 157         }
 158
 159         ~CGitHeadFileList()
 160         {
 161                 m_SharedMutex.Release();
 162         }
 163
 164         int ReadTree();
 165         int ReadHeadHash(CString gitdir);
 166         bool CheckHeadUpdate();
 167         static int CallBack(const unsigned char *, const char *, int, const char *, unsigned int, int, void *);
 168 };
 169
 170 typedef std::tr1::shared_ptr<CGitHeadFileList> SHARED_TREE_PTR;
 171 class CGitHeadFileMap:public std::map<CString,SHARED_TREE_PTR>
 172 {
 173 public:
 174
 175         CComCriticalSection                     m_critTreeSec;
 176
 177         CGitHeadFileMap() { m_critTreeSec.Init(); }
 178         ~CGitHeadFileMap() { m_critTreeSec.Term(); }
 179
 180         SHARED_TREE_PTR SafeGet(const CString &path)
 181         {
 182                 CString thePath = path;
 183                 thePath.MakeLower();
 184                 CAutoLocker lock(m_critTreeSec);
 185                 if(this->find(thePath) == end())
 186                         return SHARED_TREE_PTR();
 187                 else
 188                         return (*this)[thePath];
 189         }
 190
 191         void SafeSet(const CString &path, SHARED_TREE_PTR ptr)
 192         {
 193                 CString thePath = path;
 194                 thePath.MakeLower();
 195                 CAutoLocker lock(m_critTreeSec);
 196                 (*this)[thePath] = ptr;
 197         }
 198
 199         int GetFileStatus(const CString &gitdir,const CString &path,git_wc_status_kind * status,BOOL IsFull=false, BOOL IsRecursive=false,
 200                                                 FIll_STATUS_CALLBACK callback=NULL,void *pData=NULL,
 201                                                 bool isLoaded=false);
 202         bool CheckHeadUpdate(const CString &gitdir);
 203         int IsUnderVersionControl(const CString &gitdir, const CString &path, bool isDir, bool *isVersion);
 204
 205         bool IsHashChanged(const CString &gitdir)
 206         {
 207                 SHARED_TREE_PTR ptr = SafeGet(gitdir);
 208
 209                 if( ptr.get() == NULL)
 210                         return false;
 211
 212                 return ptr->m_Head != ptr->m_TreeHash;
 213         }
 214 };
 215
 216 class CGitFileName
 217 {
 218 public:
 219         CString m_FileName;
 220         CString m_CaseFileName;
 221 };
 222
 223 class CGitIgnoreItem
 224 {
 225 public:
 226         SharedMutex  m_SharedMutex;
 227
 228         CGitIgnoreItem()
 229         {
 230                 m_LastModifyTime =0;
 231                 m_pExcludeList =NULL;
 232         }
 233         ~CGitIgnoreItem()
 234         {
 235                 if(m_pExcludeList)
 236                         git_free_exclude_list(m_pExcludeList);
 237                 m_pExcludeList=NULL;
 238         }
 239         __time64_t  m_LastModifyTime;
 240         CStringA m_BaseDir;
 241         EXCLUDE_LIST m_pExcludeList;
 242         int FetchIgnoreList(const CString &projectroot, const CString &file, bool isGlobal);
 243 };
 244
 245 class CGitIgnoreList
 246 {
 247 private:
 248         bool CheckFileChanged(const CString &path);
 249         int FetchIgnoreFile(const CString &gitdir, const CString &gitignore, bool isGlobal);
 250
 251         int  CheckIgnore(const CString &path,const CString &root);
 252         int CheckFileAgainstIgnoreList(const CString &ignorefile, const CStringA &patha, const char * base, int &type);
 253
 254         // core.excludesfile stuff
 255         std::map<CString, CString> m_CoreExcludesfiles;
 256         CString m_sMsysGitBinPath;
 257         DWORD m_dMsysGitBinPathLastChecked;
 258         SharedMutex     m_coreExcludefilesSharedMutex;
 259         // checks if the msysgit path has changed and return true/false
 260         // if the path changed, the cache is update
 261         // force is only ised in constructor
 262         bool CheckAndUpdateMsysGitBinpath(bool force = true);
 263         bool CheckAndUpdateCoreExcludefile(const CString &adminDir);
 264         const CString GetWindowsHome();
 265
 266 public:
 267         SharedMutex             m_SharedMutex;
 268
 269         CGitIgnoreList(){ m_SharedMutex.Init(); m_coreExcludefilesSharedMutex.Init(); CheckAndUpdateMsysGitBinpath(true); }
 270         ~CGitIgnoreList() { m_SharedMutex.Release(); m_coreExcludefilesSharedMutex.Release(); }
 271
 272         std::map<CString, CGitIgnoreItem> m_Map;
 273
 274         bool CheckIgnoreChanged(const CString &gitdir,const CString &path);
 275         int  LoadAllIgnoreFile(const CString &gitdir,const CString &path);
 276         bool IsIgnore(const CString &path,const CString &root);
 277 };
 278
 279 template<class T>
 280 int GetRangeInSortVector(T &vector,LPTSTR pstr,int len, int *start, int *end, int pos)
 281 {
 282         if( pos < 0)
 283         {
 284                 return -1;
 285         }
 286         if(start == 0 || end == NULL)
 287                 return -1;
 288
 289         *start=*end=-1;
 290
 291         if (vector.empty())
 292                 return -1;
 293
 294         if (pos >= (int)vector.size())
 295                 return -1;
 296
 297         if( _tcsnccmp(vector[pos].m_FileName, pstr,len) != 0)
 298         {
 299                 for (int i = 0; i < (int)vector.size(); i++)
 300                 {
 301                         if( _tcsnccmp(vector[i].m_FileName, pstr,len) == 0 )
 302                         {
 303                                 if(*start<0)
 304                                         *start =i;
 305                                 *end =i;
 306                         }
 307                 }
 308                 return -1;
 309         }
 310         else
 311         {
 312                 *start =0;
 313                 *end = (int)vector.size();
 314
 315                 for (int i = pos; i < (int)vector.size(); i++)
 316                 {
 317                         if( _tcsnccmp(vector[i].m_FileName, pstr,len) == 0 )
 318                         {
 319                                 *end=i;
 320                         }
 321                         else
 322                         {
 323                                 break;
 324                         }
 325                 }
 326                 for(int i=pos;i>=0;i--)
 327                 {
 328                         if( _tcsnccmp(vector[i].m_FileName, pstr,len) == 0 )
 329                         {
 330                                 *start=i;
 331                         }
 332                         else
 333                         {
 334                                 break;
 335                         }
 336                 }
 337         }
 338         return 0;
 339 }
 340
 341 template<class T>
 342 int SearchInSortVector(T &vector, LPTSTR pstr, int len)
 343 {
 344         int end = (int)vector.size() - 1;
 345         int start = 0;
 346         int mid = (start+end)/2;
 347
 348         if (vector.empty())
 349                 return -1;
 350
 351         while(!( start == end && start==mid))
 352         {
 353                 int cmp;
 354                 if(len < 0)
 355                         cmp = _tcscmp(vector[mid].m_FileName,pstr);
 356                 else
 357                         cmp = _tcsnccmp( vector[mid].m_FileName,pstr,len );
 358
 359                 if (cmp == 0)
 360                         return mid;
 361                 else if (cmp < 0)
 362                         start = mid + 1;
 363                 else // (cmp > 0)
 364                         end = mid;
 365
 366                 mid=(start +end ) /2;
 367
 368         }
 369         if(len <0)
 370         {
 371                 if(_tcscmp(vector[mid].m_FileName,pstr) == 0)
 372                         return mid;
 373         }
 374         else
 375         {
 376                 if(_tcsnccmp( vector[mid].m_FileName,pstr,len ) == 0)
 377                         return mid;
 378         }
 379         return -1;
 380 };
 381
 382 class CGitAdminDirMap:public std::map<CString, CString>
 383 {
 384 public:
 385         CComCriticalSection                     m_critIndexSec;
 386         std::map<CString, CString>      m_reverseLookup;
 387
 388         CGitAdminDirMap() { m_critIndexSec.Init(); }
 389         ~CGitAdminDirMap() { m_critIndexSec.Term(); }
 390
 391         CString GetAdminDir(const CString &path)
 392         {
 393                 CString thePath = path;
 394                 thePath.MakeLower();
 395                 CAutoLocker lock(m_critIndexSec);
 396                 if(this->find(thePath) == end())
 397                 {
 398                         if (PathIsDirectory(thePath + _T("\\.git")))
 399                         {
 400                                 (*this)[thePath] = thePath + _T("\\.git\\");
 401                                 m_reverseLookup[thePath + _T("\\.git")] = thePath;
 402                                 return (*this)[thePath];
 403                         }
 404                         else
 405                         {
 406                                 FILE * pFile = _tfsopen(thePath + _T("\\.git"), _T("r"), SH_DENYWR);
 407                                 if (pFile)
 408                                 {
 409                                         int size = 65536;
 410                                         auto_buffer<char> buffer(size);
 411                                         if (fread(buffer, sizeof(char), size, pFile))
 412                                         {
 413                                                 fclose(pFile);
 414                                                 CString str = CString(buffer);
 415                                                 if (str.Left(8) == _T("gitdir: "))
 416                                                 {
 417                                                         str = str.TrimRight().Mid(8);
 418                                                         str.Replace(_T("/"), _T("\\"));
 419                                                         str.TrimRight(_T("\\"));
 420                                                         if (str.GetLength() > 0 && str[0] == _T('.'))
 421                                                         {
 422                                                                 str = thePath + _T("\\") + str;
 423                                                                 CString newPath;
 424                                                                 PathCanonicalize(newPath.GetBuffer(MAX_PATH), str.GetBuffer());
 425                                                                 newPath.ReleaseBuffer();
 426                                                                 str.ReleaseBuffer();
 427                                                                 str = newPath;
 428                                                         }
 429                                                         (*this)[thePath] = str + _T("\\");
 430                                                         m_reverseLookup[str.MakeLower()] = path;
 431                                                         return (*this)[thePath];
 432                                                 }
 433                                         }
 434                                         else
 435                                                 fclose(pFile);
 436                                 }
 437                                 return thePath + _T("\\.git\\"); // in case of an error stick to old behavior
 438                         }
 439                 }
 440                 else
 441                         return (*this)[thePath];
 442         }
 443
 444         CString GetWorkingCopy(const CString &gitDir)
 445         {
 446                 CString path = gitDir;
 447                 path.MakeLower();
 448                 CAutoLocker lock(m_critIndexSec);
 449                 if (m_reverseLookup.find(path) == m_reverseLookup.end())
 450                         return gitDir;
 451                 else
 452                         return m_reverseLookup[path];
 453         }
 454 };