lib/libc/string/wcsspn.c

   1 /*      $NetBSD: wcsspn.c,v 1.4 2011/11/21 15:02:48 joerg Exp $ */
   2
   3 /*-
   4  * Copyright (c)1999,2001 Citrus Project,
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  *      $Citrus: xpg4dl/FreeBSD/lib/libc/string/wcsspn.c,v 1.3 2001/09/21 16:06:43 yamt Exp $
  29  */
  30
  31 #include <sys/cdefs.h>
  32 __RCSID("$NetBSD: wcsspn.c,v 1.4 2011/11/21 15:02:48 joerg Exp $");
  33
  34 #include <assert.h>
  35 #include <wchar.h>
  36
  37 size_t
  38 wcsspn(const wchar_t *s, const wchar_t *set)
  39 {
  40         const wchar_t *p;
  41         const wchar_t *q;
  42
  43         _DIAGASSERT(s != NULL);
  44         _DIAGASSERT(set != NULL);
  45
  46         for (p = s; *p; ++p) {
  47                 for (q = set; *q; ++q) {
  48                         if (*p == *q)
  49                                 break;
  50                 }
  51                 if (!*q)
  52                         break;
  53         }
  54
  55         return (p - s);
  56 }