win32: Replace usage of __wgetmainargs()

It was an internal function that has been removed with VS 2015

Use g_win32_get_command_line() or CommandLineToArgvW() directly.

https://bugzilla.gnome.org/show_bug.cgi?id=741822

gio/tests/gio-du.c

@@ -6,21 +6,6 @@ static gint     option_format_size;
 
 static gint     outstanding_asyncs;
 
-#ifdef G_OS_WIN32
-typedef struct {
-  int newmode;
-} _startupinfo;
-
-#ifndef _MSC_VER
-
-extern void __wgetmainargs(int *argc,
-			   wchar_t ***wargv,
-			   wchar_t ***wenviron,
-			   int expand_wildcards,
-			   _startupinfo *startupinfo);
-#endif
-#endif
-
 static void
 print_result (const gchar *filename,
               guint64      disk_usage,
@@ -91,12 +76,10 @@ main (int argc, char **argv)
   GFileMeasureProgressCallback progress = NULL;
   GFileMeasureFlags flags = 0;
   gint i;
-#ifdef G_OS_WIN32
-  int wargc;
-  wchar_t **wargv, **wenvp;
-  _startupinfo si = { 0 };
 
-  __wgetmainargs (&wargc, &wargv, &wenvp, 0, &si);
+#ifdef G_OS_WIN32
+  argv = g_win32_get_command_line ();
+  argc = g_strv_length (argv);
 #endif
 
   setlocale (LC_ALL, "");
@@ -111,6 +94,9 @@ main (int argc, char **argv)
       if (g_str_equal (argv[i], "--help"))
         {
           g_print ("usage: du [--progress] [--async] [-x] [-h] [-h] [--apparent-size] [--any-error] [--] files...\n");
+#ifdef G_OS_WIN32
+          g_strfreev (argv);
+#endif
           return 0;
         }
       else if (g_str_equal (argv[i], "-x"))
@@ -134,24 +120,20 @@ main (int argc, char **argv)
   if (!argv[i])
     {
       g_printerr ("usage: du [--progress] [--async] [-x] [-h] [-h] [--apparent-size] [--any-error] [--] files...\n");
+#ifdef G_OS_WIN32
+      g_strfreev (argv);
+#endif
       return 1;
     }
 
-#ifdef G_OS_WIN32
-  while (wargv[i])
-  {
-    gchar *argv_utf8 = g_utf16_to_utf8 (wargv[i], -1, NULL, NULL, NULL);
-#else
   while (argv[i])
   {
-    gchar *argv_utf8 = g_strdup (argv[i]);
+    GFile *file = g_file_new_for_commandline_arg (argv[i]);
-#endif
-    GFile *file = g_file_new_for_commandline_arg (argv_utf8);
 
     if (option_use_async)
     {
       g_file_measure_disk_usage_async (file, flags, G_PRIORITY_DEFAULT, NULL,
-                                       progress, argv_utf8, async_ready_func, argv_utf8);
+                                       progress, argv[i], async_ready_func, argv[i]);
       outstanding_asyncs++;
     }
     else
@@ -161,10 +143,9 @@ main (int argc, char **argv)
       guint64 num_dirs;
       guint64 num_files;
 
-      g_file_measure_disk_usage (file, flags, NULL, progress, argv_utf8,
+      g_file_measure_disk_usage (file, flags, NULL, progress, argv[i],
                                  &disk_usage, &num_dirs, &num_files, &error);
-      print_result (argv_utf8, disk_usage, num_dirs, num_files, error, '\n');
+      print_result (argv[i], disk_usage, num_dirs, num_files, error, '\n');
-      g_free (argv_utf8);
     }
 
     g_object_unref (file);
@@ -175,5 +156,9 @@ main (int argc, char **argv)
   while (outstanding_asyncs)
     g_main_context_iteration (NULL, TRUE);
 
+#ifdef G_OS_WIN32
+  g_strfreev (argv);
+#endif
+
   return 0;
 }

glib/gspawn-win32-helper.c

@@ -67,20 +67,6 @@ write_err_and_exit (gint    fd,
  * but a WinMain().
  */
 
-/* Info peeked from mingw runtime's source code. __wgetmainargs() is a
- * function to get the program's argv in wide char format.
- */
-
-typedef struct {
-  int newmode;
-} _startupinfo;
-
-extern void __wgetmainargs(int *argc,
-			   wchar_t ***wargv,
-			   wchar_t ***wenviron,
-			   int expand_wildcards,
-			   _startupinfo *startupinfo);
-
 /* Copy of protect_argv that handles wchar_t strings */
 
 static gint
@@ -211,8 +197,7 @@ main (int ignored_argc, char **ignored_argv)
   wchar_t **new_wargv;
   int argc;
   char **argv;
-  wchar_t **wargv, **wenvp;
+  wchar_t **wargv;
-  _startupinfo si = { 0 };
   char c;
 
 #if (defined (_MSC_VER) && _MSC_VER >= 1400)
@@ -226,7 +211,7 @@ main (int ignored_argc, char **ignored_argv)
 #endif
 
   /* Fetch the wide-char argument vector */
-  __wgetmainargs (&argc, &wargv, &wenvp, 0, &si);
+  wargv = CommandLineToArgvW (GetCommandLineW(), &argc);
 
   g_assert (argc >= ARG_COUNT);
 
@@ -382,6 +367,7 @@ main (int ignored_argc, char **ignored_argv)
 
   read (helper_sync_fd, &c, 1);
 
+  LocalFree (wargv);
   g_strfreev (argv);
 
   return 0;

glib/gspawn.c

@@ -509,13 +509,8 @@ g_spawn_sync (const gchar          *working_directory,
  * main(). wmain() has a wide character argument vector as parameter.
  *
  * At least currently, mingw doesn't support wmain(), so if you use
- * mingw to develop the spawned program, it will have to call the
+ * mingw to develop the spawned program, it should call
- * undocumented function __wgetmainargs() to get the wide character
+ * g_win32_get_command_line() to get arguments in UTF-8.
- * argument vector and environment. See gspawn-win32-helper.c in the
- * GLib sources or init.c in the mingw runtime sources for a prototype
- * for that function. Alternatively, you can retrieve the Win32 system
- * level wide character command line passed to the spawned program
- * using the GetCommandLineW() function.
  *
  * On Windows the low-level child process creation API CreateProcess()
  * doesn't use argument vectors, but a command line. The C runtime