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                 // e.g "C:\"
  81                 if (path.GetLength() <= 3)
  82                         return false;
  83                 sDirName = path.Left(path.ReverseFind(_T('\\')));
  84         }
  85
  86         // a .git dir or anything inside it should be left out, only interested in working copy files -- Myagi
  87         {
  88         int n = 0;
  89         for (;;)
  90         {
  91                 n = sDirName.Find(_T("\\.git"), n);
  92                 if (n < 0)
  93                 {
  94                         break;
  95                 }
  96
  97                 // check for actual .git dir (and not .gitignore or something else), continue search if false match
  98                 n += 5;
  99                 if (sDirName[n] == _T('\\') || sDirName[n] == 0)
 100                 {
 101                         return false;
 102                 }
 103         }
 104         }
 105
 106         for (;;)
 107         {
 108                 if(CGit::GitPathFileExists(sDirName + _T("\\.git")))
 109                 {
 110                         if(ProjectTopDir)
 111                         {
 112                                 *ProjectTopDir=sDirName;
 113                                 // Make sure to add the trailing slash to root paths such as 'C:'
 114                                 if (sDirName.GetLength() == 2 && sDirName[1] == _T(':'))
 115                                         (*ProjectTopDir) += _T("\\");
 116                         }
 117                         return true;
 118                 }
 119                 else if (IsBareRepo(sDirName))
 120                         return false;
 121
 122                 int x = sDirName.ReverseFind(_T('\\'));
 123                 if (x < 2)
 124                         break;
 125
 126                 sDirName = sDirName.Left(x);
 127         }
 128
 129         return false;
 130
 131 }
 132 /**
 133  * Returns the .git-path (if .git is a file, read the repository path and return it)
 134  * adminDir always ends with "\"
 135  */
 136 bool GitAdminDir::GetAdminDirPath(const CString &projectTopDir, CString &adminDir) const
 137 {
 138         if (IsBareRepo(projectTopDir))
 139         {
 140                 adminDir = projectTopDir;
 141                 adminDir.TrimRight('\\');
 142                 adminDir.Append(_T("\\"));
 143                 return true;
 144         }
 145
 146         CString sDotGitPath = projectTopDir + _T("\\") + g_GitAdminDir.GetAdminDirName();
 147         if (CTGitPath(sDotGitPath).IsDirectory())
 148         {
 149                 sDotGitPath.TrimRight('\\');
 150                 sDotGitPath.Append(_T("\\"));
 151                 adminDir = sDotGitPath;
 152                 return true;
 153         }
 154         else
 155         {
 156                 FILE *pFile;
 157                 _tfopen_s(&pFile, sDotGitPath, _T("r"));
 158
 159                 if (!pFile)
 160                         return false;
 161
 162                 int size = 65536;
 163                 std::unique_ptr<char[]> buffer(new char[size]);
 164                 SecureZeroMemory(buffer.get(), size);
 165                 fread(buffer.get(), sizeof(char), size, pFile);
 166                 fclose(pFile);
 167                 CStringA gitPathA(buffer.get());
 168                 if (gitPathA.Left(8) != "gitdir: ")
 169                         return false;
 170                 CString gitPath = CUnicodeUtils::GetUnicode(gitPathA.Trim().Mid(8)); // 8 = len("gitdir: ")
 171                 gitPath.Replace('/', '\\');
 172                 gitPath.TrimRight('\\');
 173                 gitPath.Append(_T("\\"));
 174                 if (gitPath.GetLength() > 0 && gitPath[0] == _T('.'))
 175                 {
 176                         gitPath = projectTopDir + _T("\\") + gitPath;
 177                         PathCanonicalize(adminDir.GetBuffer(MAX_PATH), gitPath.GetBuffer());
 178                         adminDir.ReleaseBuffer();
 179                         gitPath.ReleaseBuffer();
 180                         return true;
 181                 }
 182                 adminDir = gitPath;
 183                 return true;
 184         }
 185 }
 186
 187 bool GitAdminDir::IsAdminDirPath(const CString& path) const
 188 {
 189         if (path.IsEmpty())
 190                 return false;
 191         bool bIsAdminDir = false;
 192         CString lowerpath = path;
 193         lowerpath.MakeLower();
 194         int ind = -1;
 195         int ind1 = 0;
 196         while ((ind1 = lowerpath.Find(_T("\\.git"), ind1))>=0)
 197         {
 198                 ind = ind1++;
 199                 if (ind == (lowerpath.GetLength() - 5))
 200                 {
 201                         bIsAdminDir = true;
 202                         break;
 203                 }
 204                 else if (lowerpath.Find(_T("\\.git\\"), ind)>=0)
 205                 {
 206                         bIsAdminDir = true;
 207                         break;
 208                 }
 209         }
 210
 211         return bIsAdminDir;
 212 }
 213
 214 bool GitAdminDir::IsBareRepo(const CString& path) const
 215 {
 216         if (path.IsEmpty())
 217                 return false;
 218
 219         if (IsAdminDirPath(path))
 220                 return false;
 221
 222         if (!PathFileExists(path + _T("\\HEAD")) || !PathFileExists(path + _T("\\config")))
 223                 return false;
 224
 225         if (!PathFileExists(path + _T("\\objects\\")) || !PathFileExists(path + _T("\\refs\\")))
 226                 return false;
 227
 228         return true;
 229 }