19829d36aSTakuya SHIOZAKI /*-
2*8a16b7a1SPedro F. Giffuni * SPDX-License-Identifier: BSD-3-Clause
3*8a16b7a1SPedro F. Giffuni *
4fcd7f38fSTim J. Robbins * Copyright (c) 1990, 1993
5fcd7f38fSTim J. Robbins * The Regents of the University of California. All rights reserved.
6fcd7f38fSTim J. Robbins *
7fcd7f38fSTim J. Robbins * This code is derived from software contributed to Berkeley by
8fcd7f38fSTim J. Robbins * Chris Torek.
99829d36aSTakuya SHIOZAKI *
109829d36aSTakuya SHIOZAKI * Redistribution and use in source and binary forms, with or without
119829d36aSTakuya SHIOZAKI * modification, are permitted provided that the following conditions
129829d36aSTakuya SHIOZAKI * are met:
139829d36aSTakuya SHIOZAKI * 1. Redistributions of source code must retain the above copyright
149829d36aSTakuya SHIOZAKI * notice, this list of conditions and the following disclaimer.
159829d36aSTakuya SHIOZAKI * 2. Redistributions in binary form must reproduce the above copyright
169829d36aSTakuya SHIOZAKI * notice, this list of conditions and the following disclaimer in the
179829d36aSTakuya SHIOZAKI * documentation and/or other materials provided with the distribution.
183fb3b97cSEd Maste * 3. Neither the name of the University nor the names of its contributors
19fcd7f38fSTim J. Robbins * may be used to endorse or promote products derived from this software
20fcd7f38fSTim J. Robbins * without specific prior written permission.
219829d36aSTakuya SHIOZAKI *
22fcd7f38fSTim J. Robbins * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
239829d36aSTakuya SHIOZAKI * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
249829d36aSTakuya SHIOZAKI * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25fcd7f38fSTim J. Robbins * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
269829d36aSTakuya SHIOZAKI * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
279829d36aSTakuya SHIOZAKI * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
289829d36aSTakuya SHIOZAKI * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
299829d36aSTakuya SHIOZAKI * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
309829d36aSTakuya SHIOZAKI * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
319829d36aSTakuya SHIOZAKI * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
329829d36aSTakuya SHIOZAKI * SUCH DAMAGE.
339829d36aSTakuya SHIOZAKI */
349829d36aSTakuya SHIOZAKI
359829d36aSTakuya SHIOZAKI #include <wchar.h>
369829d36aSTakuya SHIOZAKI
37fcd7f38fSTim J. Robbins /*
38fcd7f38fSTim J. Robbins * Find the first occurrence of find in s.
39fcd7f38fSTim J. Robbins */
409829d36aSTakuya SHIOZAKI wchar_t *
wcsstr(const wchar_t * __restrict s,const wchar_t * __restrict find)41fcd7f38fSTim J. Robbins wcsstr(const wchar_t * __restrict s, const wchar_t * __restrict find)
429829d36aSTakuya SHIOZAKI {
43fcd7f38fSTim J. Robbins wchar_t c, sc;
44fcd7f38fSTim J. Robbins size_t len;
459829d36aSTakuya SHIOZAKI
46bd604b4bSDaniel Gerzo if ((c = *find++) != L'\0') {
47fcd7f38fSTim J. Robbins len = wcslen(find);
48fcd7f38fSTim J. Robbins do {
49fcd7f38fSTim J. Robbins do {
50fcd7f38fSTim J. Robbins if ((sc = *s++) == L'\0')
51fcd7f38fSTim J. Robbins return (NULL);
52fcd7f38fSTim J. Robbins } while (sc != c);
53fcd7f38fSTim J. Robbins } while (wcsncmp(s, find, len) != 0);
54fcd7f38fSTim J. Robbins s--;
559829d36aSTakuya SHIOZAKI }
56fcd7f38fSTim J. Robbins return ((wchar_t *)s);
579829d36aSTakuya SHIOZAKI }
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