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 35333fc21eSDavid E. O'Brien #if 0 369829d36aSTakuya SHIOZAKI #if defined(LIBC_SCCS) && !defined(lint) 37fcd7f38fSTim J. Robbins static char sccsid[] = "@(#)strstr.c 8.1 (Berkeley) 6/4/93"; 389829d36aSTakuya SHIOZAKI #endif /* LIBC_SCCS and not lint */ 39333fc21eSDavid E. O'Brien #endif 40fcd7f38fSTim J. Robbins #include <sys/cdefs.h> 41de5fe5d5SDavid E. O'Brien __FBSDID("$FreeBSD$"); 429829d36aSTakuya SHIOZAKI 439829d36aSTakuya SHIOZAKI #include <wchar.h> 449829d36aSTakuya SHIOZAKI 45fcd7f38fSTim J. Robbins /* 46fcd7f38fSTim J. Robbins * Find the first occurrence of find in s. 47fcd7f38fSTim J. Robbins */ 489829d36aSTakuya SHIOZAKI wchar_t * 49fcd7f38fSTim J. Robbins wcsstr(const wchar_t * __restrict s, const wchar_t * __restrict find) 509829d36aSTakuya SHIOZAKI { 51fcd7f38fSTim J. Robbins wchar_t c, sc; 52fcd7f38fSTim J. Robbins size_t len; 539829d36aSTakuya SHIOZAKI 54bd604b4bSDaniel Gerzo if ((c = *find++) != L'\0') { 55fcd7f38fSTim J. Robbins len = wcslen(find); 56fcd7f38fSTim J. Robbins do { 57fcd7f38fSTim J. Robbins do { 58fcd7f38fSTim J. Robbins if ((sc = *s++) == L'\0') 59fcd7f38fSTim J. Robbins return (NULL); 60fcd7f38fSTim J. Robbins } while (sc != c); 61fcd7f38fSTim J. Robbins } while (wcsncmp(s, find, len) != 0); 62fcd7f38fSTim J. Robbins s--; 639829d36aSTakuya SHIOZAKI } 64fcd7f38fSTim J. Robbins return ((wchar_t *)s); 659829d36aSTakuya SHIOZAKI } 66