src/Git/GitAdminDir.cpp

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2008-2013 - TortoiseGit
   4 // Copyright (C) 2003-2008 - TortoiseSVN
   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 #include "stdafx.h"
  21 #include "UnicodeUtils.h"
  22 #include "GitAdminDir.h"
  23 #include "Git.h"
  24 #include <memory>
  25
  26 GitAdminDir g_GitAdminDir;
  27
  28 GitAdminDir::GitAdminDir()
  29 {
  30 }
  31
  32 GitAdminDir::~GitAdminDir()
  33 {
  34 }
  35
  36 CString GitAdminDir::GetSuperProjectRoot(const CString& path)
  37 {
  38         CString projectroot=path;
  39
  40         do
  41         {
  42                 if(CGit::GitPathFileExists(projectroot + _T("\\.gitmodules")))
  43                 {
  44                         return projectroot;
  45                 }
  46
  47                 projectroot = projectroot.Left(projectroot.ReverseFind('\\'));
  48
  49         }while(projectroot.ReverseFind('\\')>0);
  50
  51         return _T("");
  52
  53 }
  54
  55 CString GitAdminDir::GetGitTopDir(const CString& path)
  56 {
  57         CString str;
  58         str=_T("");
  59         HasAdminDir(path,!!PathIsDirectory(path),&str);
  60         return str;
  61 }
  62
  63 bool GitAdminDir::HasAdminDir(const CString& path) const
  64 {
  65         return HasAdminDir(path, !!PathIsDirectory(path));
  66 }
  67
  68 bool GitAdminDir::HasAdminDir(const CString& path,CString *ProjectTopDir) const
  69 {
  70         return HasAdminDir(path, !!PathIsDirectory(path),ProjectTopDir);
  71 }
  72
  73 bool GitAdminDir::HasAdminDir(const CString& path, bool bDir,CString *ProjectTopDir) const
  74 {
  75         if (path.IsEmpty())
  76                 return false;
  77         CString sDirName = path;
  78         if (!bDir)
  79         {
  80                 sDirName = path.Left(path.ReverseFind(_T('\\')));
  81         }
  82
  83         // a .git dir or anything inside it should be left out, only interested in working copy files -- Myagi
  84         {
  85         int n = 0;
  86         for (;;)
  87         {
  88                 n = sDirName.Find(_T("\\.git"), n);
  89                 if (n < 0)
  90                 {
  91                         break;
  92                 }
  93
  94                 // check for actual .git dir (and not .gitignore or something else), continue search if false match
  95                 n += 5;
  96                 if (sDirName[n] == _T('\\') || sDirName[n] == 0)
  97                 {
  98                         return false;
  99                 }
 100         }
 101         }
 102
 103         for (;;)
 104         {
 105                 if(CGit::GitPathFileExists(sDirName + _T("\\.git")))
 106                 {
 107                         if(ProjectTopDir)
 108                         {
 109                                 *ProjectTopDir=sDirName;
 110                                 // Make sure to add the trailing slash to root paths such as 'C:'
 111                                 if (sDirName.GetLength() == 2 && sDirName[1] == _T(':'))
 112                                         (*ProjectTopDir) += _T("\\");
 113                         }
 114                         return true;
 115                 }
 116
 117                 int x = sDirName.ReverseFind(_T('\\'));
 118                 if (x < 2)
 119                         break;
 120
 121                 sDirName = sDirName.Left(x);
 122         }
 123
 124         return false;
 125
 126 }
 127 /**
 128  * Returns the .git-path (if .git is a file, read the repository path and return it)
 129  * adminDir always ends with "\"
 130  */
 131 bool GitAdminDir::GetAdminDirPath(const CString &projectTopDir, CString &adminDir) const
 132 {
 133         if (IsBareRepo(projectTopDir))
 134         {
 135                 adminDir = projectTopDir;
 136                 adminDir.TrimRight('\\');
 137                 adminDir.Append(_T("\\"));
 138                 return true;
 139         }
 140
 141         CString sDotGitPath = projectTopDir + _T("\\") + g_GitAdminDir.GetAdminDirName();
 142         if (CTGitPath(sDotGitPath).IsDirectory())
 143         {
 144                 sDotGitPath.TrimRight('\\');
 145                 sDotGitPath.Append(_T("\\"));
 146                 adminDir = sDotGitPath;
 147                 return true;
 148         }
 149         else
 150         {
 151                 FILE *pFile;
 152                 _tfopen_s(&pFile, sDotGitPath, _T("r"));
 153
 154                 if (!pFile)
 155                         return false;
 156
 157                 int size = 65536;
 158                 std::unique_ptr<char[]> buffer(new char[size]);
 159                 SecureZeroMemory(buffer.get(), size);
 160                 fread(buffer.get(), sizeof(char), size, pFile);
 161                 fclose(pFile);
 162                 CStringA gitPathA(buffer.get());
 163                 if (gitPathA.Left(8) != "gitdir: ")
 164                         return false;
 165                 CString gitPath = CUnicodeUtils::GetUnicode(gitPathA.Trim().Mid(8)); // 8 = len("gitdir: ")
 166                 gitPath.Replace('/', '\\');
 167                 gitPath.TrimRight('\\');
 168                 gitPath.Append(_T("\\"));
 169                 if (gitPath.GetLength() > 0 && gitPath[0] == _T('.'))
 170                 {
 171                         gitPath = projectTopDir + _T("\\") + gitPath;
 172                         PathCanonicalize(adminDir.GetBuffer(MAX_PATH), gitPath.GetBuffer());
 173                         adminDir.ReleaseBuffer();
 174                         gitPath.ReleaseBuffer();
 175                         return true;
 176                 }
 177                 adminDir = gitPath;
 178                 return true;
 179         }
 180 }
 181
 182 bool GitAdminDir::IsAdminDirPath(const CString& path) const
 183 {
 184         if (path.IsEmpty())
 185                 return false;
 186         bool bIsAdminDir = false;
 187         CString lowerpath = path;
 188         lowerpath.MakeLower();
 189         int ind = -1;
 190         int ind1 = 0;
 191         while ((ind1 = lowerpath.Find(_T("\\.git"), ind1))>=0)
 192         {
 193                 ind = ind1++;
 194                 if (ind == (lowerpath.GetLength() - 5))
 195                 {
 196                         bIsAdminDir = true;
 197                         break;
 198                 }
 199                 else if (lowerpath.Find(_T("\\.git\\"), ind)>=0)
 200                 {
 201                         bIsAdminDir = true;
 202                         break;
 203                 }
 204         }
 205
 206         return bIsAdminDir;
 207 }
 208
 209 bool GitAdminDir::IsBareRepo(const CString& path) const
 210 {
 211         if (path.IsEmpty())
 212                 return false;
 213
 214         if (IsAdminDirPath(path))
 215                 return false;
 216
 217         if (!PathFileExists(path + _T("\\HEAD")) || !PathFileExists(path + _T("\\config")))
 218                 return false;
 219
 220         if (!PathFileExists(path + _T("\\objects\\")) || !PathFileExists(path + _T("\\refs\\")))
 221                 return false;
 222
 223         return true;
 224 }