/*      $OpenBSD: wcsstr.c,v 1.5 2015/10/01 02:32:07 guenther Exp $     */
/*      $NetBSD: wcsstr.c,v 1.3 2003/03/05 20:18:17 tshiozak Exp $      */

/*-
 * Copyright (c)1999 Citrus Project,
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      citrus Id: wcsstr.c,v 1.2 2000/12/21 05:07:25 itojun Exp
 */

#include <wchar.h>

wchar_t *
#ifdef WCSWCS
wcswcs(const wchar_t *big, const wchar_t *little)
#else
wcsstr(const wchar_t *big, const wchar_t *little)
#endif
{
        const wchar_t *p;
        const wchar_t *q;
        const wchar_t *r;

        if (!*little) {
                return (wchar_t *)big;
        }
        if (wcslen(big) < wcslen(little))
                return NULL;

        p = big;
        q = little;
        while (*p) {
                q = little;
                r = p;
                while (*q) {
                        if (*r != *q)
                                break;
                        q++;
                        r++;
                }
                if (!*q) {
                        return (wchar_t *)p;
                }
                p++;
        }
        return NULL;
}
#ifndef WCSWCS
DEF_STRONG(wcsstr);
#endif