toolkit/xre/nsWindowsWMain.cpp

   1 // This file is a .cpp file meant to be included in nsBrowserApp.cpp and other
   2 // similar bootstrap code. It converts wide-character windows wmain into UTF-8
   3 // narrow-character strings.
   4
   5 #ifndef XP_WIN
   6 #error This file only makes sense on Windows.
   7 #endif
   8
   9 #include "nsUTF8Utils.h"
  10
  11 #ifdef __MINGW32__
  12
  13 /* MingW currently does not implement a wide version of the
  14    startup routines.  Workaround is to implement something like
  15    it ourselves.  See bug 411826 */
  16
  17 #include <shellapi.h>
  18
  19 int wmain(int argc, WCHAR **argv);
  20
  21 int main(int argc, char **argv)
  22 {
  23   LPWSTR commandLine = GetCommandLineW();
  24   int argcw = 0;
  25   LPWSTR *argvw = CommandLineToArgvW(commandLine, &argcw);
  26   if (!argvw)
  27     return 127;
  28
  29   int result = wmain(argcw, argvw);
  30   LocalFree(argvw);
  31   return result;
  32 }
  33 #endif /* __MINGW32__ */
  34
  35 #define main NS_internal_main
  36
  37 int main(int argc, char **argv);
  38
  39 static char*
  40 AllocConvertUTF16toUTF8(const WCHAR *arg)
  41 {
  42   // be generous... UTF16 units can expand up to 3 UTF8 units
  43   int len = wcslen(arg);
  44   char *s = new char[len * 3 + 1];
  45   if (!s)
  46     return NULL;
  47
  48   ConvertUTF16toUTF8 convert(s);
  49   convert.write(arg, len);
  50   convert.write_terminator();
  51   return s;
  52 }
  53
  54 static void
  55 FreeAllocStrings(int argc, char **argv)
  56 {
  57   while (argc) {
  58     --argc;
  59     delete [] argv[argc];
  60   }
  61
  62   delete [] argv;
  63 }
  64
  65 int wmain(int argc, WCHAR **argv)
  66 {
  67   char **argvConverted = new char*[argc + 1];
  68   if (!argvConverted)
  69     return 127;
  70
  71   for (int i = 0; i < argc; ++i) {
  72     argvConverted[i] = AllocConvertUTF16toUTF8(argv[i]);
  73     if (!argvConverted[i]) {
  74       return 127;
  75     }
  76   }
  77   argvConverted[argc] = NULL;
  78
  79   // need to save argvConverted copy for later deletion.
  80   char **deleteUs = new char*[argc+1];
  81   if (!deleteUs) {
  82     FreeAllocStrings(argc, argvConverted);
  83     return 127;
  84   }
  85   for (int i=0; i<argc; i++)
  86     deleteUs[i] = argvConverted[i];
  87   int result = main(argc, argvConverted);
  88
  89   delete[] argvConverted;
  90   FreeAllocStrings(argc, deleteUs);
  91
  92   return result;
  93 }