xref: /illumos-gate/usr/src/lib/libc/port/i18n/wscspn.c (revision 948f2876ce2a3010558f4f6937e16086ebcd36f2)
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 NOT from charset.
38  */
39 
40 #pragma weak wcscspn = _wcscspn
41 #pragma weak wscspn = _wscspn
42 
43 #include "lint.h"
44 #include <stdlib.h>
45 #include <wchar.h>
46 
47 size_t
48 _wcscspn(const wchar_t *string, const wchar_t *charset)
49 {
50 	const wchar_t *p, *q;
51 
52 	for (q = string; *q != 0; ++q) {
53 		for (p = charset; *p != 0 && *p != *q; ++p)
54 			;
55 		if (*p != 0)
56 			break;
57 	}
58 	return (q - string);
59 }
60 
61 size_t
62 _wscspn(const wchar_t *string, const wchar_t *charset)
63 {
64 	return (_wcscspn(string, charset));
65 }
66