snprintf/mbrtowc_sb.c

   1 /*      $OpenBSD: mbrtowc_sb.c,v 1.4 2005/11/27 20:03:06 cloder Exp $   */
   2 /*      $NetBSD: multibyte_sb.c,v 1.4 2003/08/07 16:43:04 agc Exp $     */
   3
   4 /*
   5  * SPDX-License-Identifier: BSD-3-Clause
   6  *
   7  * Copyright (C) 1991 The Regents of the University of California.
   8  * All rights reserved.
   9  */
  10
  11 #include <errno.h>
  12 #include <stdlib.h>
  13 #include <wchar.h>
  14
  15 /*ARGSUSED*/
  16 size_t
  17 ust_safe_mbrtowc(wchar_t *pwc, const char *s, size_t n,
  18                 mbstate_t *ps __attribute__((unused)))
  19 {
  20
  21         /* pwc may be NULL */
  22         /* s may be NULL */
  23         /* ps appears to be unused */
  24
  25         if (s == NULL)
  26                 return 0;
  27         if (n == 0)
  28                 return (size_t)-1;
  29         if (pwc)
  30                 *pwc = (wchar_t)(unsigned char)*s;
  31         return (*s != '\0');
  32 }