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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2008 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#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32/*
33 * Returns a pointer to the first occurrnce of ws1 in ws2.
34 */
35
36#pragma weak _wcswcs = wcswcs
37
38#include "lint.h"
39#include <stdlib.h>
40
41wchar_t *
42wcswcs(const wchar_t *ws1, const wchar_t *ws2)
43{
44	const wchar_t *s1, *s2;
45	const wchar_t *tptr;
46	wchar_t c;
47
48	s1 = ws1;
49	s2 = ws2;
50
51	if (s2 == NULL || *s2 == 0)
52		return ((wchar_t *)s1);
53	c = *s2;
54
55	while (*s1)
56		if (*s1++ == c) {
57			tptr = s1;
58			while ((c = *++s2) == *s1++ && c)
59				;
60			if (c == 0)
61				return ((wchar_t *)tptr - 1);
62			s1 = tptr;
63			s2 = ws2;
64			c = *s2;
65		}
66	return (NULL);
67}
68