Win32: Unicode arguments (incoming)

Convert command line arguments from UTF-16 to UTF-8 on startup.

Signed-off-by: Karsten Blees <blees@dcon.de>
Signed-off-by: Stepan Kasal <kasal@ucw.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/compat/mingw.c b/compat/mingw.c
index 8a7b0476c22aaeada292944b3206a00f6d64ee16..3baaa4dfaedd1e451f810a6bead28b2f7e9aa95d 100644 (file)
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -1943,10 +1943,48 @@ int xwcstoutf(char *utf, const wchar_t *wcs, size_t utflen)
  */
 int _CRT_glob = 0;
 
+typedef struct {
+       int newmode;
+} _startupinfo;
+
+extern int __wgetmainargs(int *argc, wchar_t ***argv, wchar_t ***env, int glob,
+               _startupinfo *si);
+
+static NORETURN void die_startup()
+{
+       fputs("fatal: not enough memory for initialization", stderr);
+       exit(128);
+}
+
 void mingw_startup()
 {
-       /* copy executable name to argv[0] */
-       __argv[0] = xstrdup(_pgmptr);
+       int i, len, maxlen, argc;
+       char *buffer;
+       wchar_t **wenv, **wargv;
+       _startupinfo si;
+
+       /* get wide char arguments and environment */
+       si.newmode = 0;
+       if (__wgetmainargs(&argc, &wargv, &wenv, _CRT_glob, &si) < 0)
+               die_startup();
+
+       /* determine size of argv and environ conversion buffer */
+       maxlen = wcslen(_wpgmptr);
+       for (i = 1; i < argc; i++)
+               maxlen = max(maxlen, wcslen(wargv[i]));
+
+       /* allocate buffer (wchar_t encodes to max 3 UTF-8 bytes) */
+       maxlen = 3 * maxlen + 1;
+       buffer = xmalloc(maxlen);
+
+       /* convert command line arguments and environment to UTF-8 */
+       len = xwcstoutf(buffer, _wpgmptr, maxlen);
+       __argv[0] = xmemdupz(buffer, len);
+       for (i = 1; i < argc; i++) {
+               len = xwcstoutf(buffer, wargv[i], maxlen);
+               __argv[i] = xmemdupz(buffer, len);
+       }
+       free(buffer);
 
        /* initialize critical section for waitpid pinfo_t list */
        InitializeCriticalSection(&pinfo_cs);