src/Git/Git.h

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2008-2015 - 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 #pragma once
  21 #include "GitType.h"
  22 #include "GitRev.h"
  23 #include "GitStatus.h"
  24 #include "GitAdminDir.h"
  25 #include "gitdll.h"
  26 #include <functional>
  27
  28 #define REG_MSYSGIT_PATH _T("Software\\TortoiseGit\\MSysGit")
  29 #define REG_SYSTEM_GITCONFIGPATH _T("Software\\TortoiseGit\\SystemConfig")
  30 #define REG_MSYSGIT_EXTRA_PATH _T("Software\\TortoiseGit\\MSysGitExtra")
  31
  32 #define DEFAULT_USE_LIBGIT2_MASK (1 << CGit::GIT_CMD_MERGE_BASE) | (1 << CGit::GIT_CMD_DELETETAGBRANCH) | (1 << CGit::GIT_CMD_GETONEFILE) | (1 << CGit::GIT_CMD_ADD) | (1 << CGit::GIT_CMD_CHECKCONFLICTS) | (1 << CGit::GIT_CMD_GET_COMMIT)
  33
  34 struct git_repository;
  35
  36 class CFilterData
  37 {
  38 public:
  39
  40         enum
  41         {
  42                 SHOW_NO_LIMIT, // NOTE: no limitation does not mean "without all limitations", it's just without the following limitations. That say, the log still could be limited by auther, committer, etc.
  43                 SHOW_LAST_SEL_DATE,
  44                 SHOW_LAST_N_COMMITS,
  45                 SHOW_LAST_N_YEARS,
  46                 SHOW_LAST_N_MONTHS,
  47                 SHOW_LAST_N_WEEKS,
  48         };
  49
  50         CFilterData()
  51         {
  52                 m_From=m_To=-1;
  53                 m_IsRegex=1;
  54                 m_NumberOfLogsScale = SHOW_NO_LIMIT;
  55                 m_NumberOfLogs = 1;
  56         }
  57
  58         DWORD m_NumberOfLogsScale;
  59         DWORD m_NumberOfLogs;
  60         __time64_t m_From;
  61         __time64_t m_To;
  62         CString m_Author;
  63         CString m_Committer;
  64         CString m_MessageFilter;
  65         BOOL m_IsRegex;
  66 };
  67
  68 class CGitCall
  69 {
  70 public:
  71         CGitCall(){}
  72         CGitCall(CString cmd):m_Cmd(cmd){}
  73
  74         CString                 GetCmd()const{return m_Cmd;}
  75         void                    SetCmd(CString cmd){m_Cmd=cmd;}
  76
  77         //This function is called when command output data is available.
  78         //When this function returns 'true' the git command should be aborted.
  79         //This behavior is not implemented yet.
  80         virtual bool    OnOutputData(const BYTE* data, size_t size)=0;
  81         virtual bool    OnOutputErrData(const BYTE* data, size_t size)=0;
  82         virtual void    OnEnd(){}
  83
  84 private:
  85         CString m_Cmd;
  86 };
  87
  88 typedef std::function<void (const CStringA&)> GitReceiverFunc;
  89
  90 class CTGitPath;
  91 class CEnvironment : protected std::vector<TCHAR>
  92 {
  93 public:
  94         void CopyProcessEnvironment();
  95         CString GetEnv(const TCHAR *name);
  96         void SetEnv(const TCHAR* name, const TCHAR* value);
  97         void AddToPath(CString value);
  98         void clear();
  99         bool empty();
 100         operator LPTSTR();
 101 };
 102 class CGit
 103 {
 104 private:
 105         CString         gitLastErr;
 106 protected:
 107         GIT_DIFF m_GitDiff;
 108         GIT_DIFF m_GitSimpleListDiff;
 109 #ifdef GTEST_INCLUDE_GTEST_GTEST_H_
 110 public:
 111 #endif
 112         bool m_IsGitDllInited;
 113 public:
 114         CComCriticalSection                     m_critGitDllSec;
 115         bool    m_IsUseGitDLL;
 116         bool    m_IsUseLibGit2;
 117         DWORD   m_IsUseLibGit2_mask;
 118
 119         CEnvironment m_Environment;
 120
 121         static BOOL GitPathFileExists(const CString &path)
 122         {
 123                 if(path[0] == _T('\\') && path[1] == _T('\\'))
 124                 //it is netshare \\server\sharefoldername
 125                 // \\server\.git will create smb error log.
 126                 {
 127                         int length = path.GetLength();
 128
 129                         if(length<2)
 130                                 return false;
 131
 132                         int start = path.Find(_T('\\'),2);
 133                         if(start<0)
 134                                 return false;
 135
 136                         start = path.Find(_T('\\'),start+1);
 137                         if(start<0)
 138                                 return false;
 139
 140                         return PathFileExists(path);
 141
 142                 }
 143                 else
 144                         return PathFileExists(path);
 145         }
 146         void CheckAndInitDll()
 147         {
 148                 if(!m_IsGitDllInited)
 149                 {
 150                         git_init();
 151                         m_IsGitDllInited=true;
 152                 }
 153         }
 154
 155         GIT_DIFF GetGitDiff()
 156         {
 157                 if(m_GitDiff)
 158                         return m_GitDiff;
 159                 else
 160                 {
 161                         git_open_diff(&m_GitDiff,"-C -M -r");
 162                         return m_GitDiff;
 163                 }
 164         }
 165
 166         GIT_DIFF GetGitSimpleListDiff()
 167         {
 168                 if(m_GitSimpleListDiff)
 169                         return m_GitSimpleListDiff;
 170                 else
 171                 {
 172                         git_open_diff(&m_GitSimpleListDiff,"-r -r");
 173                         return m_GitSimpleListDiff;
 174                 }
 175         }
 176
 177         BOOL CheckMsysGitDir(BOOL bFallback = TRUE);
 178         BOOL FindAndSetGitExePath(BOOL bFallback);
 179         BOOL m_bInitialized;
 180
 181         typedef enum
 182         {
 183                 GIT_CMD_CLONE,
 184                 GIT_CMD_FETCH,
 185                 GIT_CMD_COMMIT_UPDATE_INDEX,
 186                 GIT_CMD_DIFF,
 187                 GIT_CMD_RESET,
 188                 GIT_CMD_REVERT,
 189                 GIT_CMD_MERGE_BASE,
 190                 GIT_CMD_DELETETAGBRANCH,
 191                 GIT_CMD_GETONEFILE,
 192                 GIT_CMD_ADD,
 193                 GIT_CMD_PUSH,
 194                 GIT_CMD_CHECK_CLEAN_WT,
 195                 GIT_CMD_CHECKCONFLICTS,
 196                 GIT_CMD_GET_COMMIT,
 197                 GIT_CMD_LOGLISTDIFF,
 198         } LIBGIT2_CMD;
 199         bool UsingLibGit2(LIBGIT2_CMD cmd) const;
 200         /**
 201          * callback type should be git_cred_acquire_cb
 202          */
 203         static void SetGit2CredentialCallback(void* callback);
 204         static void SetGit2CertificateCheckCertificate(void* callback);
 205
 206         CString GetHomeDirectory() const;
 207         CString GetGitLocalConfig() const;
 208         CString GetGitGlobalConfig() const;
 209         CString GetGitGlobalXDGConfigPath() const;
 210         CString GetGitGlobalXDGConfig() const;
 211         CString GetGitSystemConfig() const;
 212         git_repository * GetGitRepository() const;
 213         static CStringA GetGitPathStringA(const CString &path);
 214         static CString ms_LastMsysGitDir;       // the last msysgitdir added to the path, blank if none
 215         static CString ms_MsysGitRootDir;
 216         static int ms_LastMsysGitVersion;
 217         static bool ms_bCygwinGit;
 218         static bool ms_bMsys2Git;
 219         static int m_LogEncode;
 220         static bool IsBranchNameValid(const CString& branchname);
 221         bool IsBranchTagNameUnique(const CString& name);
 222         /**
 223         * Checks if a branch or tag with the given name exists
 224         *isBranch is true -> branch, tag otherwise
 225         */
 226         bool BranchTagExists(const CString& name, bool isBranch = true);
 227         unsigned int Hash2int(const CGitHash &hash);
 228
 229         PROCESS_INFORMATION m_CurrentGitPi;
 230
 231         CGit(void);
 232         ~CGit(void);
 233
 234         int Run(CString cmd, CString* output, int code);
 235         int Run(CString cmd, CString* output, CString* outputErr, int code);
 236         int Run(CString cmd, BYTE_VECTOR *byte_array, BYTE_VECTOR *byte_arrayErr = NULL);
 237         int Run(CGitCall* pcall);
 238         int Run(CString cmd, const GitReceiverFunc& recv);
 239
 240 private:
 241         static DWORD WINAPI AsyncReadStdErrThread(LPVOID lpParam);
 242         typedef struct AsyncReadStdErrThreadArguments
 243         {
 244                 HANDLE fileHandle;
 245                 CGitCall* pcall;
 246         } ASYNCREADSTDERRTHREADARGS, *PASYNCREADSTDERRTHREADARGS;
 247         CString GetUnifiedDiffCmd(const CTGitPath& path, const git_revnum_t& rev1, const git_revnum_t& rev2, bool bMerge, bool bCombine, int diffContext);
 248
 249 public:
 250         int RunAsync(CString cmd, PROCESS_INFORMATION *pi, HANDLE* hRead, HANDLE *hErrReadOut, CString *StdioFile = NULL);
 251         int RunLogFile(CString cmd, const CString &filename, CString *stdErr);
 252
 253         int GetDiffPath(CTGitPathList *PathList, CGitHash *hash1, CGitHash *hash2, char *arg=NULL);
 254
 255         int GetGitEncode(TCHAR* configkey);
 256
 257         bool IsFastForward(const CString &from, const CString &to, CGitHash * commonAncestor = NULL);
 258         CString GetConfigValue(const CString& name);
 259         bool GetConfigValueBool(const CString& name);
 260         int GetConfigValueInt32(const CString& name, int def = 0);
 261
 262         int SetConfigValue(const CString& key, const CString& value, CONFIG_TYPE type = CONFIG_LOCAL);
 263         int UnsetConfigValue(const CString& key, CONFIG_TYPE type = CONFIG_LOCAL);
 264
 265         CString GetUserName(void);
 266         CString GetUserEmail(void);
 267         CString GetCurrentBranch(bool fallback = false);
 268         void GetRemoteTrackedBranch(const CString& localBranch, CString& remote, CString& branch);
 269         void GetRemoteTrackedBranchForHEAD(CString& remote, CString& branch);
 270         // read current branch name from HEAD file, returns 0 on success, -1 on failure, 1 detached (branch name "HEAD" returned)
 271         static int GetCurrentBranchFromFile(const CString &sProjectRoot, CString &sBranchOut, bool fallback = false);
 272         /**
 273         Use this method only when the HEAD is exist.
 274         */
 275         BOOL CheckCleanWorkTree(bool stagedOk = false);
 276         int Revert(const CString& commit, const CTGitPathList &list, CString& err);
 277         int Revert(const CString& commit, const CTGitPath &path, CString& err);
 278         int DeleteRef(const CString& reference);
 279         /**
 280         Use this method only if m_IsUseLibGit2 is used for fallbacks.
 281         If you directly use libgit2 methods, use GetLibGit2LastErr instead.
 282         */
 283         CString GetGitLastErr(const CString& msg);
 284         CString GetGitLastErr(const CString& msg, LIBGIT2_CMD cmd);
 285         static CString GetLibGit2LastErr();
 286         static CString GetLibGit2LastErr(const CString& msg);
 287         bool SetCurrentDir(CString path, bool submodule = false)
 288         {
 289                 bool b = GitAdminDir::HasAdminDir(path, submodule ? false : !!PathIsDirectory(path), &m_CurrentDir);
 290                 if (!b && GitAdminDir::IsBareRepo(path))
 291                 {
 292                         m_CurrentDir = path;
 293                         b = true;
 294                 }
 295                 if(m_CurrentDir.GetLength() == 2 && m_CurrentDir[1] == _T(':')) //C: D:
 296                 {
 297                         m_CurrentDir += _T('\\');
 298                 }
 299                 return b;
 300         }
 301         CString m_CurrentDir;
 302
 303         enum
 304         {
 305                 LOG_ORDER_CHRONOLOGIALREVERSED,
 306                 LOG_ORDER_TOPOORDER,
 307                 LOG_ORDER_DATEORDER,
 308         };
 309
 310         typedef enum
 311         {
 312                 BRANCH_LOCAL            = 0x1,
 313                 BRANCH_REMOTE           = 0x2,
 314                 BRANCH_FETCH_HEAD       = 0x4,
 315                 BRANCH_LOCAL_F          = BRANCH_LOCAL  | BRANCH_FETCH_HEAD,
 316                 BRANCH_ALL                      = BRANCH_LOCAL  | BRANCH_REMOTE,
 317                 BRANCH_ALL_F            = BRANCH_ALL    | BRANCH_FETCH_HEAD,
 318         }BRANCH_TYPE;
 319
 320         typedef enum
 321         {
 322                 LOG_INFO_STAT=0x1,
 323                 LOG_INFO_FILESTATE=0x2,
 324                 LOG_INFO_PATCH=0x4,
 325                 LOG_INFO_FULLHISTORY=0x8,
 326                 LOG_INFO_BOUNDARY=0x10,
 327                 LOG_INFO_ALL_BRANCH=0x20,
 328                 LOG_INFO_ONLY_HASH=0x40,
 329                 LOG_INFO_DETECT_RENAME=0x80,
 330                 LOG_INFO_DETECT_COPYRENAME=0x100,
 331                 LOG_INFO_FIRST_PARENT = 0x200,
 332                 LOG_INFO_NO_MERGE = 0x400,
 333                 LOG_INFO_FOLLOW = 0x800,
 334                 LOG_INFO_SHOW_MERGEDFILE=0x1000,
 335                 LOG_INFO_FULL_DIFF = 0x2000,
 336                 LOG_INFO_SIMPILFY_BY_DECORATION = 0x4000,
 337                 LOG_INFO_LOCAL_BRANCHES = 0x8000,
 338         }LOG_INFO_MASK;
 339
 340         typedef enum
 341         {
 342                 LOCAL_BRANCH,
 343                 REMOTE_BRANCH,
 344                 TAG,
 345                 STASH,
 346                 BISECT_GOOD,
 347                 BISECT_BAD,
 348                 NOTES,
 349                 UNKNOWN,
 350
 351         }REF_TYPE;
 352
 353         int GetRemoteList(STRING_VECTOR &list);
 354         int GetBranchList(STRING_VECTOR &list, int *Current,BRANCH_TYPE type=BRANCH_LOCAL);
 355         int GetTagList(STRING_VECTOR &list);
 356         int GetRemoteTags(const CString& remote, STRING_VECTOR& list);
 357         int DeleteRemoteRefs(const CString& remote, const STRING_VECTOR& list);
 358         int GetBranchDescriptions(MAP_STRING_STRING& map);
 359         int GetMapHashToFriendName(MAP_HASH_NAME &map);
 360         static int GetMapHashToFriendName(git_repository* repo, MAP_HASH_NAME &map);
 361
 362         CString DerefFetchHead();
 363
 364         // FixBranchName():
 365         // When branchName == FETCH_HEAD, derefrence it.
 366         // A selected branch name got from GetBranchList(), with flag BRANCH_FETCH_HEAD enabled,
 367         // should go through this function before it is used.
 368         CString FixBranchName_Mod(CString& branchName);
 369         CString FixBranchName(const CString& branchName);
 370
 371         CString GetLogCmd(const CString& range, const CTGitPath* path = nullptr, int InfoMask = LOG_INFO_FULL_DIFF | LOG_INFO_STAT | LOG_INFO_FILESTATE | LOG_INFO_BOUNDARY | LOG_INFO_DETECT_COPYRENAME | LOG_INFO_SHOW_MERGEDFILE, bool paramonly = false, CFilterData* filter = nullptr);
 372
 373         int GetHash(CGitHash &hash, const CString& friendname);
 374         static int GetHash(git_repository * repo, CGitHash &hash, const CString& friendname, bool skipFastCheck = false);
 375
 376         int BuildOutputFormat(CString &format,bool IsFull=TRUE);
 377         static void StringAppend(CString *str, const BYTE *p, int code = CP_UTF8, int length = -1);
 378
 379         BOOL CanParseRev(CString ref);
 380         /**
 381         Checks if HEAD points to an unborn branch
 382         This method assumes, that we already know that we are in a working tree.
 383         */
 384         BOOL IsInitRepos();
 385         /** Returns 0 if no conflict, if a conflict was found and -1 in case of a failure */
 386         int HasWorkingTreeConflicts();
 387         /** Returns 0 if no conflict, if a conflict was found and -1 in case of a failure */
 388         int HasWorkingTreeConflicts(git_repository* repo);
 389         int GetRefList(STRING_VECTOR &list);
 390
 391         int RefreshGitIndex();
 392         int GetOneFile(const CString &Refname, const CTGitPath &path, const CString &outputfile);
 393
 394         //Example: master -> refs/heads/master
 395         CString GetFullRefName(const CString& shortRefName);
 396         //Removes 'refs/heads/' or just 'refs'. Example: refs/heads/master -> master
 397         static CString StripRefName(CString refName);
 398
 399         int GetCommitDiffList(const CString &rev1, const CString &rev2, CTGitPathList &outpathlist, bool ignoreSpaceAtEol = false, bool ignoreSpaceChange = false, bool ignoreAllSpace = false, bool ignoreBlankLines = false);
 400         int GetInitAddList(CTGitPathList &outpathlist);
 401         int GetWorkingTreeChanges(CTGitPathList& result, bool amend = false, CTGitPathList* filterlist = nullptr);
 402
 403         static __int64 filetime_to_time_t(const FILETIME *ft)
 404         {
 405                 long long winTime = ((long long)ft->dwHighDateTime << 32) + ft->dwLowDateTime;
 406                 winTime -= 116444736000000000LL; /* Windows to Unix Epoch conversion */
 407                 winTime /= 10000000;             /* Nano to seconds resolution */
 408                 return (time_t)winTime;
 409         }
 410
 411         static int GetFileModifyTime(LPCTSTR filename, __int64* time, bool* isDir = nullptr, __int64* size = nullptr)
 412         {
 413                 WIN32_FILE_ATTRIBUTE_DATA fdata;
 414                 if (GetFileAttributesEx(filename, GetFileExInfoStandard, &fdata))
 415                 {
 416                         if(time)
 417                                 *time = filetime_to_time_t(&fdata.ftLastWriteTime);
 418
 419                         if (size)
 420                                 *size = ((__int64)fdata.nFileSizeHigh << 32) + fdata.nFileSizeLow;
 421
 422                         if(isDir)
 423                                 *isDir = !!( fdata.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY);
 424
 425                         return 0;
 426                 }
 427                 return -1;
 428         }
 429
 430         int GetShortHASHLength() const;
 431
 432         static BOOL GetShortName(const CString &ref, CString &shortname, CString prefix)
 433         {
 434                 //TRACE(_T("%s %s\r\n"),ref,prefix);
 435                 if (ref.Left(prefix.GetLength()) ==  prefix)
 436                 {
 437                         shortname = ref.Right(ref.GetLength() - prefix.GetLength());
 438                         if (shortname.Right(3) == _T("^{}"))
 439                                 shortname=shortname.Left(shortname.GetLength() - 3);
 440                         return TRUE;
 441                 }
 442                 return FALSE;
 443         }
 444
 445         static CString GetShortName(const CString& ref, REF_TYPE *type);
 446
 447         static bool LoadTextFile(const CString &filename, CString &msg);
 448
 449         int GetUnifiedDiff(const CTGitPath& path, const git_revnum_t& rev1, const git_revnum_t& rev2, CString patchfile, bool bMerge, bool bCombine, int diffContext);
 450         int GetUnifiedDiff(const CTGitPath& path, const git_revnum_t& rev1, const git_revnum_t& rev2, CStringA * buffer, bool bMerge, bool bCombine, int diffContext);
 451
 452         int GitRevert(int parent, const CGitHash &hash);
 453
 454         CString CombinePath(const CString &path) const
 455         {
 456                 if (path.IsEmpty())
 457                         return m_CurrentDir;
 458                 if (m_CurrentDir.IsEmpty())
 459                         return path;
 460                 return m_CurrentDir + (m_CurrentDir.Right(1) == _T("\\") ? _T("") : _T("\\")) + path;
 461         }
 462
 463         CString CombinePath(const CTGitPath &path) const
 464         {
 465                 return CombinePath(path.GetWinPath());
 466         }
 467
 468         CString CombinePath(const CTGitPath *path) const
 469         {
 470                 ATLASSERT(path);
 471                 return CombinePath(path->GetWinPath());
 472         }
 473 };
 474 extern void GetTempPath(CString &path);
 475 extern CString GetTempFile();
 476 extern DWORD GetTortoiseGitTempPath(DWORD nBufferLength, LPTSTR lpBuffer);
 477
 478 extern CGit g_Git;