src/Git/gitindex.h

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2008-2013 - 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 #include "UnicodeUtils.h"
  26
  27 class CGitIndex
  28 {
  29 public:
  30         CString    m_FileName;
  31         __time64_t      m_ModifyTime;
  32         unsigned short m_Flags;
  33         CGitHash        m_IndexHash;
  34
  35         int Print();
  36 };
  37
  38 class CGitIndexList:public std::vector<CGitIndex>
  39 {
  40 protected:
  41
  42 public:
  43         __time64_t  m_LastModifyTime;
  44
  45         CGitIndexList();
  46         ~CGitIndexList();
  47
  48         int ReadIndex(CString file);
  49         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);
  50 protected:
  51         bool m_bCheckContent;
  52         CComCriticalSection m_critRepoSec;
  53         git_repository * repository;
  54         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);
  55         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);
  56 };
  57
  58 typedef std::tr1::shared_ptr<CGitIndexList> SHARED_INDEX_PTR;
  59 typedef CComCritSecLock<CComCriticalSection> CAutoLocker;
  60
  61 class CGitIndexFileMap:public std::map<CString, SHARED_INDEX_PTR>
  62 {
  63 public:
  64         CComCriticalSection                     m_critIndexSec;
  65
  66         CGitIndexFileMap() { m_critIndexSec.Init(); }
  67         ~CGitIndexFileMap() { m_critIndexSec.Term(); }
  68
  69         SHARED_INDEX_PTR SafeGet(const CString &path)
  70         {
  71                 CString thePath = path;
  72                 thePath.MakeLower();
  73                 CAutoLocker lock(m_critIndexSec);
  74                 if(this->find(thePath) == end())
  75                         return SHARED_INDEX_PTR();
  76                 else
  77                         return (*this)[thePath];
  78         }
  79
  80         void SafeSet(const CString &path, SHARED_INDEX_PTR ptr)
  81         {
  82                 CString thePath = path;
  83                 thePath.MakeLower();
  84                 CAutoLocker lock(m_critIndexSec);
  85                 (*this)[thePath] = ptr;
  86         }
  87
  88         int Check(const CString &gitdir, bool *isChanged);
  89         int LoadIndex(const CString &gitdir);
  90
  91         bool CheckAndUpdate(const CString &gitdir,bool isLoadUpdatedIndex)
  92         {
  93                 bool isChanged=false;
  94                 if(isLoadUpdatedIndex && Check(gitdir,&isChanged))
  95                         return false;
  96
  97                 if(isChanged && isLoadUpdatedIndex)
  98                 {
  99                         LoadIndex(gitdir);
 100                         return true;
 101                 }
 102
 103                 return false;
 104         }
 105         int GetFileStatus(const CString &gitdir,const CString &path,git_wc_status_kind * status,
 106                                                         BOOL IsFull=false, BOOL IsRecursive=false,
 107                                                         FIll_STATUS_CALLBACK callback=NULL,
 108                                                         void *pData=NULL,CGitHash *pHash=NULL,
 109                                                         bool isLoadUpdatedIndex = true, bool * assumeValid = NULL, bool * skipWorktree = NULL);
 110
 111         int IsUnderVersionControl(const CString &gitdir,
 112                                                           const CString &path,
 113                                                           bool isDir,
 114                                                           bool *isVersion,
 115                                                           bool isLoadUpdateIndex=true);
 116 };
 117
 118
 119 class CGitTreeItem
 120 {
 121 public:
 122         CString m_FileName;
 123         CGitHash        m_Hash;
 124         int                     m_Flags;
 125 };
 126
 127 /* After object create, never change field agains
 128  * that needn't lock to get field
 129 */
 130 class CGitHeadFileList:public std::vector<CGitTreeItem>
 131 {
 132 private:
 133         int GetPackRef(const CString &gitdir);
 134         SharedMutex     m_SharedMutex;
 135
 136         __time64_t  m_LastModifyTimeHead;
 137         __time64_t  m_LastModifyTimeRef;
 138         __time64_t      m_LastModifyTimePackRef;
 139
 140         CString         m_HeadRefFile;
 141         CGitHash        m_Head;
 142         CString         m_HeadFile;
 143         CString         m_Gitdir;
 144         CString         m_PackRefFile;
 145
 146         CGitHash        m_TreeHash; /* buffered tree hash value */
 147
 148         std::map<CString,CGitHash> m_PackRefMap;
 149
 150 public:
 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         bool HeadHashEqualsTreeHash();
 168         bool HeadFileIsEmpty();
 169         bool HeadIsEmpty();
 170         static int CallBack(const unsigned char *, const char *, int, const char *, unsigned int, int, void *);
 171 };
 172
 173 typedef std::tr1::shared_ptr<CGitHeadFileList> SHARED_TREE_PTR;
 174 class CGitHeadFileMap:public std::map<CString,SHARED_TREE_PTR>
 175 {
 176 public:
 177
 178         CComCriticalSection                     m_critTreeSec;
 179
 180         CGitHeadFileMap() { m_critTreeSec.Init(); }
 181         ~CGitHeadFileMap() { m_critTreeSec.Term(); }
 182
 183         SHARED_TREE_PTR SafeGet(const CString &path)
 184         {
 185                 CString thePath = path;
 186                 thePath.MakeLower();
 187                 CAutoLocker lock(m_critTreeSec);
 188                 if(this->find(thePath) == end())
 189                         return SHARED_TREE_PTR();
 190                 else
 191                         return (*this)[thePath];
 192         }
 193
 194         void SafeSet(const CString &path, SHARED_TREE_PTR ptr)
 195         {
 196                 CString thePath = path;
 197                 thePath.MakeLower();
 198                 CAutoLocker lock(m_critTreeSec);
 199                 (*this)[thePath] = ptr;
 200         }
 201
 202         int GetFileStatus(const CString &gitdir,const CString &path,git_wc_status_kind * status,BOOL IsFull=false, BOOL IsRecursive=false,
 203                                                 FIll_STATUS_CALLBACK callback=NULL,void *pData=NULL,
 204                                                 bool isLoaded=false);
 205         bool CheckHeadAndUpdate(const CString &gitdir, bool readTree = true);
 206         int IsUnderVersionControl(const CString &gitdir, const CString &path, bool isDir, bool *isVersion);
 207 };
 208
 209 class CGitFileName
 210 {
 211 public:
 212         CString m_FileName;
 213         CString m_CaseFileName;
 214 };
 215
 216 class CGitIgnoreItem
 217 {
 218 public:
 219         SharedMutex  m_SharedMutex;
 220
 221         CGitIgnoreItem()
 222         {
 223                 m_LastModifyTime =0;
 224                 m_pExcludeList =NULL;
 225                 m_buffer = NULL;
 226         }
 227         ~CGitIgnoreItem()
 228         {
 229                 if(m_pExcludeList)
 230                         git_free_exclude_list(m_pExcludeList);
 231                 if (m_buffer)
 232                         free(m_buffer);
 233                 m_pExcludeList=NULL;
 234                 m_buffer = NULL;
 235         }
 236         __time64_t  m_LastModifyTime;
 237         CStringA m_BaseDir;
 238         BYTE *m_buffer;
 239         EXCLUDE_LIST m_pExcludeList;
 240
 241         int FetchIgnoreList(const CString &projectroot, const CString &file, bool isGlobal);
 242 };
 243
 244 class CGitIgnoreList
 245 {
 246 private:
 247         bool CheckFileChanged(const CString &path);
 248         int FetchIgnoreFile(const CString &gitdir, const CString &gitignore, bool isGlobal);
 249
 250         int  CheckIgnore(const CString &path,const CString &root);
 251         int CheckFileAgainstIgnoreList(const CString &ignorefile, const CStringA &patha, const char * base, int &type);
 252
 253         // core.excludesfile stuff
 254         std::map<CString, CString> m_CoreExcludesfiles;
 255         CString m_sMsysGitBinPath;
 256         DWORD m_dMsysGitBinPathLastChecked;
 257         SharedMutex     m_coreExcludefilesSharedMutex;
 258         // checks if the msysgit path has changed and return true/false
 259         // if the path changed, the cache is update
 260         // force is only ised in constructor
 261         bool CheckAndUpdateMsysGitBinpath(bool force = true);
 262         bool CheckAndUpdateCoreExcludefile(const CString &adminDir);
 263         const CString GetWindowsHome();
 264
 265 public:
 266         SharedMutex             m_SharedMutex;
 267
 268         CGitIgnoreList(){ m_SharedMutex.Init(); m_coreExcludefilesSharedMutex.Init(); CheckAndUpdateMsysGitBinpath(true); }
 269         ~CGitIgnoreList() { m_SharedMutex.Release(); m_coreExcludefilesSharedMutex.Release(); }
 270
 271         std::map<CString, CGitIgnoreItem> m_Map;
 272
 273         bool CheckIgnoreChanged(const CString &gitdir,const CString &path);
 274         int  LoadAllIgnoreFile(const CString &gitdir,const CString &path);
 275         bool IsIgnore(const CString &path,const CString &root);
 276 };
 277
 278 template<class T>
 279 int GetRangeInSortVector(T &vector,LPTSTR pstr,int len, int *start, int *end, int pos)
 280 {
 281         if( pos < 0)
 282         {
 283                 return -1;
 284         }
 285         if(start == 0 || end == NULL)
 286                 return -1;
 287
 288         *start=*end=-1;
 289
 290         if (vector.empty())
 291                 return -1;
 292
 293         if (pos >= (int)vector.size())
 294                 return -1;
 295
 296         if( _tcsnccmp(vector[pos].m_FileName, pstr,len) != 0)
 297         {
 298                 for (int i = 0; i < (int)vector.size(); ++i)
 299                 {
 300                         if( _tcsnccmp(vector[i].m_FileName, pstr,len) == 0 )
 301                         {
 302                                 if(*start<0)
 303                                         *start =i;
 304                                 *end =i;
 305                         }
 306                 }
 307                 return -1;
 308         }
 309         else
 310         {
 311                 *start =0;
 312                 *end = (int)vector.size();
 313
 314                 for (int i = pos; i < (int)vector.size(); ++i)
 315                 {
 316                         if( _tcsnccmp(vector[i].m_FileName, pstr,len) == 0 )
 317                         {
 318                                 *end=i;
 319                         }
 320                         else
 321                         {
 322                                 break;
 323                         }
 324                 }
 325                 for(int i=pos;i>=0;i--)
 326                 {
 327                         if( _tcsnccmp(vector[i].m_FileName, pstr,len) == 0 )
 328                         {
 329                                 *start=i;
 330                         }
 331                         else
 332                         {
 333                                 break;
 334                         }
 335                 }
 336         }
 337         return 0;
 338 }
 339
 340 template<class T>
 341 int SearchInSortVector(T &vector, LPTSTR pstr, int len)
 342 {
 343         int end = (int)vector.size() - 1;
 344         int start = 0;
 345         int mid = (start+end)/2;
 346
 347         if (vector.empty())
 348                 return -1;
 349
 350         while(!( start == end && start==mid))
 351         {
 352                 int cmp;
 353                 if(len < 0)
 354                         cmp = _tcscmp(vector[mid].m_FileName,pstr);
 355                 else
 356                         cmp = _tcsnccmp( vector[mid].m_FileName,pstr,len );
 357
 358                 if (cmp == 0)
 359                         return mid;
 360                 else if (cmp < 0)
 361                         start = mid + 1;
 362                 else // (cmp > 0)
 363                         end = mid;
 364
 365                 mid=(start +end ) /2;
 366
 367         }
 368         if(len <0)
 369         {
 370                 if(_tcscmp(vector[mid].m_FileName,pstr) == 0)
 371                         return mid;
 372         }
 373         else
 374         {
 375                 if(_tcsnccmp( vector[mid].m_FileName,pstr,len ) == 0)
 376                         return mid;
 377         }
 378         return -1;
 379 };
 380
 381 class CGitAdminDirMap:public std::map<CString, CString>
 382 {
 383 public:
 384         CComCriticalSection                     m_critIndexSec;
 385         std::map<CString, CString>      m_reverseLookup;
 386
 387         CGitAdminDirMap() { m_critIndexSec.Init(); }
 388         ~CGitAdminDirMap() { m_critIndexSec.Term(); }
 389
 390         CString GetAdminDir(const CString &path)
 391         {
 392                 CString thePath = path;
 393                 thePath.MakeLower();
 394                 CAutoLocker lock(m_critIndexSec);
 395                 if(this->find(thePath) == end())
 396                 {
 397                         if (PathIsDirectory(thePath + _T("\\.git")))
 398                         {
 399                                 (*this)[thePath] = thePath + _T("\\.git\\");
 400                                 m_reverseLookup[thePath + _T("\\.git")] = thePath;
 401                                 return (*this)[thePath];
 402                         }
 403                         else
 404                         {
 405                                 FILE * pFile = _tfsopen(thePath + _T("\\.git"), _T("r"), SH_DENYWR);
 406                                 if (pFile)
 407                                 {
 408                                         int size = 65536;
 409                                         std::unique_ptr<char[]> buffer(new char[size]);
 410                                         SecureZeroMemory(buffer.get(), size);
 411                                         if (fread(buffer.get(), sizeof(char), size, pFile))
 412                                         {
 413                                                 fclose(pFile);
 414                                                 CStringA strA(buffer.get());
 415                                                 if (strA.Left(8) == "gitdir: ")
 416                                                 {
 417                                                         CString str = CUnicodeUtils::GetUnicode(strA.Trim().Mid(8)); // 8 = len("gitdir: ")
 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 };