src/Utils/LangDll.cpp

   1 // TortoiseSVN - a Windows shell extension for easy version control\r
   2 \r
   3 // Copyright (C) 2003-2006,2008 - TortoiseSVN\r
   4 \r
   5 // This program is free software; you can redistribute it and/or\r
   6 // modify it under the terms of the GNU General Public License\r
   7 // as published by the Free Software Foundation; either version 2\r
   8 // of the License, or (at your option) any later version.\r
   9 \r
  10 // This program is distributed in the hope that it will be useful,\r
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  13 // GNU General Public License for more details.\r
  14 \r
  15 // You should have received a copy of the GNU General Public License\r
  16 // along with this program; if not, write to the Free Software Foundation,\r
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\r
  18 //\r
  19 #include "stdafx.h"\r
  20 #include <assert.h>\r
  21 #include "LangDll.h"\r
  22 #include "..\version.h"\r
  23 \r
  24 #pragma comment(lib, "Version.lib")\r
  25 \r
  26 CLangDll::CLangDll()\r
  27 {\r
  28         m_hInstance = NULL;\r
  29 }\r
  30 \r
  31 CLangDll::~CLangDll()\r
  32 {\r
  33 \r
  34 }\r
  35 \r
  36 HINSTANCE CLangDll::Init(LPCTSTR appname, unsigned long langID)\r
  37 {\r
  38         TCHAR langpath[MAX_PATH];\r
  39         TCHAR langdllpath[MAX_PATH];\r
  40         TCHAR sVer[MAX_PATH];\r
  41         _tcscpy_s(sVer, MAX_PATH, _T(STRPRODUCTVER));\r
  42         GetModuleFileName(NULL, langpath, MAX_PATH);\r
  43         TCHAR * pSlash = _tcsrchr(langpath, '\\');\r
  44         if (pSlash)\r
  45         {\r
  46                 *pSlash = 0;\r
  47                 pSlash = _tcsrchr(langpath, '\\');\r
  48                 if (pSlash)\r
  49                 {\r
  50                         *pSlash = 0;\r
  51                         _tcscat_s(langpath, MAX_PATH, _T("\\Languages\\"));\r
  52                         assert(m_hInstance == NULL);\r
  53                         do\r
  54                         {\r
  55                                 _stprintf_s(langdllpath, MAX_PATH, _T("%s%s%d.dll"), langpath, appname, langID);\r
  56 \r
  57                                 m_hInstance = LoadLibrary(langdllpath);\r
  58 \r
  59                                 if (!DoVersionStringsMatch(sVer, langdllpath))\r
  60                                 {\r
  61                                         FreeLibrary(m_hInstance);\r
  62                                         m_hInstance = NULL;\r
  63                                 }\r
  64                                 if (m_hInstance == NULL)\r
  65                                 {\r
  66                                         DWORD lid = SUBLANGID(langID);\r
  67                                         lid--;\r
  68                                         if (lid > 0)\r
  69                                         {\r
  70                                                 langID = MAKELANGID(PRIMARYLANGID(langID), lid);\r
  71                                         }\r
  72                                         else\r
  73                                                 langID = 0;\r
  74                                 }\r
  75                         } while ((m_hInstance == NULL) && (langID != 0));\r
  76                 }\r
  77         }\r
  78         return m_hInstance;\r
  79 }\r
  80 \r
  81 void CLangDll::Close()\r
  82 {\r
  83         if (m_hInstance)\r
  84         {\r
  85                 FreeLibrary(m_hInstance);\r
  86                 m_hInstance = NULL;\r
  87         }\r
  88 }\r
  89 \r
  90 bool CLangDll::DoVersionStringsMatch(LPCTSTR sVer, LPCTSTR langDll)\r
  91 {\r
  92         struct TRANSARRAY\r
  93         {\r
  94                 WORD wLanguageID;\r
  95                 WORD wCharacterSet;\r
  96         };\r
  97 \r
  98         bool bReturn = false;\r
  99         DWORD dwReserved,dwBufferSize;\r
 100         dwBufferSize = GetFileVersionInfoSize((LPTSTR)langDll,&dwReserved);\r
 101 \r
 102         if (dwBufferSize > 0)\r
 103         {\r
 104                 LPVOID pBuffer = (void*) malloc(dwBufferSize);\r
 105 \r
 106                 if (pBuffer != (void*) NULL)\r
 107                 {\r
 108                         UINT        nInfoSize = 0,\r
 109                                 nFixedLength = 0;\r
 110                         LPSTR       lpVersion = NULL;\r
 111                         VOID*       lpFixedPointer;\r
 112                         TRANSARRAY* lpTransArray;\r
 113                         TCHAR       strLangProduktVersion[MAX_PATH];\r
 114 \r
 115                         GetFileVersionInfo((LPTSTR)langDll,\r
 116                                 dwReserved,\r
 117                                 dwBufferSize,\r
 118                                 pBuffer);\r
 119 \r
 120                         VerQueryValue(  pBuffer,\r
 121                                 _T("\\VarFileInfo\\Translation"),\r
 122                                 &lpFixedPointer,\r
 123                                 &nFixedLength);\r
 124                         lpTransArray = (TRANSARRAY*) lpFixedPointer;\r
 125 \r
 126                         _stprintf_s(strLangProduktVersion, MAX_PATH, \r
 127                                                 _T("\\StringFileInfo\\%04x%04x\\ProductVersion"),\r
 128                                                 lpTransArray[0].wLanguageID,\r
 129                                                 lpTransArray[0].wCharacterSet);\r
 130 \r
 131                         VerQueryValue(pBuffer,\r
 132                                 (LPTSTR)strLangProduktVersion,\r
 133                                 (LPVOID *)&lpVersion,\r
 134                                 &nInfoSize);\r
 135 \r
 136                         bReturn = (_tcscmp(sVer, (LPCTSTR)lpVersion)==0);\r
 137                         free(pBuffer);\r
 138                 }\r
 139         } \r
 140 \r
 141         return bReturn;\r
 142 }\r
 143 \r