sal/systools/win32/uwinapi/GetLongPathName.cpp

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   9  * $RCSfile: GetLongPathName.cpp,v $
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  30
  31
  32 {
  33     DWORD       dwResult = 0;   // Assume failure
  34
  35     if ( IsBadStringPtr( lpShortPath, MAX_PATH ) )
  36     {
  37         SetLastError( ERROR_INVALID_PARAMETER );
  38         return dwResult;
  39     }
  40
  41     // Assume a not existing buffer means a bufsize of zero
  42     if ( !lpLongPath )
  43         cchBuffer = 0;
  44
  45     if ( _tcslen( lpShortPath ) == 2 && lpShortPath[1] == ':' )
  46     {
  47         _tcscpy( lpLongPath, lpShortPath );
  48         dwResult = _tcslen( lpLongPath );
  49     }
  50     else
  51     {
  52         HANDLE                  hFind;
  53         WIN32_FIND_DATA aFindFileData;
  54
  55         if ( lpShortPath[_tcslen(lpShortPath)-1] == '\\' )
  56         {
  57             TCHAR       szFilePath[MAX_PATH];
  58
  59             _tcscpy( szFilePath, lpShortPath );
  60             _tcscat( szFilePath, TEXT("*.*") );
  61             hFind = FindFirstFile( szFilePath, &aFindFileData );;
  62             aFindFileData.cFileName[0] = 0;
  63         }
  64         else
  65         {
  66             hFind = FindFirstFile( lpShortPath, &aFindFileData );
  67             if ( !IsValidHandle( hFind ) )
  68             {
  69                 TCHAR   szFilePath[MAX_PATH];
  70
  71                 _tcscpy( szFilePath, lpShortPath );
  72                 _tcscat( szFilePath, TEXT("\\*.*") );
  73                 hFind = FindFirstFile( szFilePath, &aFindFileData );;
  74                 aFindFileData.cFileName[0] = 0;
  75             }
  76         }
  77
  78         if ( IsValidHandle( hFind ) )
  79         {
  80             FindClose( hFind );
  81
  82             LPCTSTR     lpLastSlash = _tcsrchr( lpShortPath, '\\' );
  83
  84             if ( lpLastSlash )
  85             {
  86                 int     nParentLen = lpLastSlash - lpShortPath;
  87                 LPTSTR  lpParentPath = (LPTSTR)_alloca( (nParentLen + 1) * sizeof(TCHAR) );
  88
  89                 CopyMemory( lpParentPath, lpShortPath, nParentLen * sizeof(TCHAR) );
  90                 lpParentPath[nParentLen] = 0;
  91
  92                 dwResult = GetLongPathName( lpParentPath, lpLongPath, cchBuffer );
  93
  94                 if ( !dwResult )
  95                     _tcscpy( lpLongPath, lpParentPath );
  96             }
  97             else
  98             {
  99                 _tcscpy( lpLongPath, lpShortPath );
 100                 dwResult = _tcslen( lpLongPath );
 101             }
 102
 103             if ( dwResult < cchBuffer )
 104             {
 105                 _tcscat( lpLongPath, TEXT("\\") );
 106                 _tcscat( lpLongPath, aFindFileData.cFileName );
 107                 dwResult = _tcslen( lpLongPath );
 108             }
 109             else
 110                 dwResult += _tcslen( aFindFileData.cFileName ) + 1;
 111         }
 112     }
 113
 114     return dwResult;
 115 }
 116