deliver full path by argv[0] and GetCommandLine for win9x

[Frank Schruefer]

Hy,

There was a discussion about this problem in wine-devel under the topic
'Need help debugging ...' (Jan 04) in case somebody is interested.

Changelog:
    Immitate win9x behaviour and set argv[0] to full exe pathname if wine behaviour is set to win9x.
    Frank Schruefer (frank.schruefer at man-made.de)



Index: dlls/kernel/environ.c
===================================================================
RCS file: /home/wine/wine/dlls/kernel/environ.c,v
retrieving revision 1.1
diff -u -r1.1 environ.c
--- dlls/kernel/environ.c       13 Nov 2003 20:58:56 -0000      1.1
+++ dlls/kernel/environ.c       23 Jan 2004 03:19:44 -0000
@@ -52,11 +52,9 @@
  /***********************************************************************
   *           GetCommandLineA      (KERNEL32.@)
   *
- * WARNING: there's a Windows incompatibility lurking here !
   * Win32s always includes the full path of the program file,
   * whereas Windows NT only returns the full file path plus arguments
   * in case the program has been started with a full path.
- * Win9x seems to have inherited NT behaviour.
   *
   * Note that both Start Menu Execute and Explorer start programs with
   * fully specified quoted app file paths, which is why probably the only case
Index: dlls/kernel/process.c
===================================================================
RCS file: /home/wine/wine/dlls/kernel/process.c,v
retrieving revision 1.42
diff -u -r1.42 process.c
--- dlls/kernel/process.c       20 Jan 2004 21:51:27 -0000      1.42
+++ dlls/kernel/process.c       23 Jan 2004 03:19:45 -0000
@@ -811,6 +811,16 @@
      MODULE_InitLoadPath();
      VERSION_Init( main_exe_name );

+    if((GetVersion() & 0x80000000)) {
+       /* Win9x always delivers full path in argv[0] and GetCommandLine. At least Dungeon Keeper is relying on this behaviour. */
+       int need, have, done;
+       have = strlen(__wine_main_argv[0]) + 1;
+       need = WideCharToMultiByte(CP_UNIXCP, 0, peb->ProcessParameters->ImagePathName.Buffer, -1, NULL, 0, NULL, NULL);
+       if(need > have) __wine_main_argv[0] = malloc(have = (need * sizeof(CHAR)));
+       done = WideCharToMultiByte(CP_UNIXCP, 0, peb->ProcessParameters->ImagePathName.Buffer, -1, __wine_main_argv[0], have, NULL, NULL);
+       if(need != done) { ERR("Miscalculated string size: %i != %i. Memory corruption possible!\n", done, need); }
+       TRACE("ensuring argv[0] contains full path on win9x. argv[0] is now: %s\n", debugstr_a(__wine_main_argv[0])); }
+
      if (!main_exe_file)  /* no file handle -> Winelib app */
      {
          TRACE( "starting Winelib app %s\n", debugstr_w(main_exe_name) );