usr/src/lib/libc/port/i18n/wsspn.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 /*      Copyright (c) 1986 AT&T */
  30 /*        All Rights Reserved   */
  31
  32
  33 /*      This module is created for NLS on Sep.03.86             */
  34
  35 /*
  36  * Return the number of characters in the maximum leading segment
  37  * of string which consists solely of characters from charset.
  38  */
  39
  40 #include "lint.h"
  41 #include <stdlib.h>
  42
  43 size_t
  44 wcsspn(const wchar_t *string, const wchar_t *charset)
  45 {
  46         const wchar_t *p, *q;
  47
  48         for (q = string; *q; ++q) {
  49                 for (p = charset; *p && *p != *q; ++p)
  50                         ;
  51                 if (*p == 0)
  52                         break;
  53         }
  54         return (q - string);
  55 }
  56
  57 size_t
  58 wsspn(const wchar_t *string, const wchar_t *charset)
  59 {
  60         return (wcsspn(string, charset));
  61 }