xref: /illumos-gate/usr/src/lib/libc/port/i18n/wsspn.c (revision 20a7641f9918de8574b8b3b47dbe35c4bfc78df1)
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 /*	Copyright (c) 1986 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 
31 /*	This module is created for NLS on Sep.03.86		*/
32 
33 /*
34  * Return the number of characters in the maximum leading segment
35  * of string which consists solely of characters from charset.
36  */
37 
38 #include "lint.h"
39 #include <stdlib.h>
40 
41 size_t
42 wcsspn(const wchar_t *string, const wchar_t *charset)
43 {
44 	const wchar_t *p, *q;
45 
46 	for (q = string; *q; ++q) {
47 		for (p = charset; *p && *p != *q; ++p)
48 			;
49 		if (*p == 0)
50 			break;
51 	}
52 	return (q - string);
53 }
54 
55 size_t
56 wsspn(const wchar_t *string, const wchar_t *charset)
57 {
58 	return (wcsspn(string, charset));
59 }
60