Libc-391.2.10.tar.gz

[apple/libc.git] / locale / FreeBSD / mbrtowc.c

diff --git a/locale/FreeBSD/mbrtowc.c b/locale/FreeBSD/mbrtowc.c
index a3b2dd65da53a96e9443e8b574cba600d12fbf0e..9b19d1046b51c866072ca920f7a12e94308662cc 100644 (file)
--- a/locale/FreeBSD/mbrtowc.c
+++ b/locale/FreeBSD/mbrtowc.c
@@ -1,5 +1,5 @@
 /*-
- * Copyright (c) 2002 Tim J. Robbins.
+ * Copyright (c) 2002-2004 Tim J. Robbins.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -25,51 +25,18 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/locale/mbrtowc.c,v 1.3 2002/11/10 10:49:14 tjr Exp $");
+__FBSDID("$FreeBSD: src/lib/libc/locale/mbrtowc.c,v 1.7 2004/05/12 14:09:04 tjr Exp $");
 
-#include <errno.h>
-#include <rune.h>
-#include <stdlib.h>
 #include <wchar.h>
+#include "mblocal.h"
 
 size_t
-mbrtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
-    mbstate_t * __restrict ps __unused)
+mbrtowc(wchar_t * __restrict pwc, const char * __restrict s,
+    size_t n, mbstate_t * __restrict ps)
 {
-        const char *e;
-        rune_t r;
+       static mbstate_t mbs;
 
-       if (s == NULL) {
-               pwc = NULL;
-               s = "";
-               n = 1;
-       }
-
-       if ((r = sgetrune(s, n, &e)) == _INVALID_RUNE) {
-               /*
-                * The design of sgetrune() doesn't give us any way to tell
-                * between incomplete and invalid multibyte sequences.
-                */
-
-               if (n >= (size_t)MB_CUR_MAX) {
-                       /*
-                        * If we have been supplied with at least MB_CUR_MAX
-                        * bytes and still cannot find a valid character, the
-                        * data must be invalid.
-                        */
-                       errno = EILSEQ;
-                       return ((size_t)-1);
-               }
-
-               /*
-                * .. otherwise, it's an incomplete character or an invalid
-                * character we cannot detect yet.
-                */
-               return ((size_t)-2);
-       }
-
-       if (pwc != NULL)
-               *pwc = (wchar_t)r;
-
-       return (r != 0 ? (size_t)(e - s) : 0);
+       if (ps == NULL)
+               ps = &mbs;
+       return (__mbrtowc(pwc, s, n, ps));
 }