19829d36aSTakuya SHIOZAKI /*- 2fcd7f38fSTim J. Robbins * Copyright (c) 1990, 1993 3fcd7f38fSTim J. Robbins * The Regents of the University of California. All rights reserved. 4fcd7f38fSTim J. Robbins * 5fcd7f38fSTim J. Robbins * This code is derived from software contributed to Berkeley by 6fcd7f38fSTim J. Robbins * Chris Torek. 79829d36aSTakuya SHIOZAKI * 89829d36aSTakuya SHIOZAKI * Redistribution and use in source and binary forms, with or without 99829d36aSTakuya SHIOZAKI * modification, are permitted provided that the following conditions 109829d36aSTakuya SHIOZAKI * are met: 119829d36aSTakuya SHIOZAKI * 1. Redistributions of source code must retain the above copyright 129829d36aSTakuya SHIOZAKI * notice, this list of conditions and the following disclaimer. 139829d36aSTakuya SHIOZAKI * 2. Redistributions in binary form must reproduce the above copyright 149829d36aSTakuya SHIOZAKI * notice, this list of conditions and the following disclaimer in the 159829d36aSTakuya SHIOZAKI * documentation and/or other materials provided with the distribution. 16*3fb3b97cSEd Maste * 3. Neither the name of the University nor the names of its contributors 17fcd7f38fSTim J. Robbins * may be used to endorse or promote products derived from this software 18fcd7f38fSTim J. Robbins * without specific prior written permission. 199829d36aSTakuya SHIOZAKI * 20fcd7f38fSTim J. Robbins * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 219829d36aSTakuya SHIOZAKI * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 229829d36aSTakuya SHIOZAKI * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23fcd7f38fSTim J. Robbins * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 249829d36aSTakuya SHIOZAKI * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 259829d36aSTakuya SHIOZAKI * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 269829d36aSTakuya SHIOZAKI * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 279829d36aSTakuya SHIOZAKI * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 289829d36aSTakuya SHIOZAKI * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 299829d36aSTakuya SHIOZAKI * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 309829d36aSTakuya SHIOZAKI * SUCH DAMAGE. 319829d36aSTakuya SHIOZAKI */ 329829d36aSTakuya SHIOZAKI 33333fc21eSDavid E. O'Brien #if 0 349829d36aSTakuya SHIOZAKI #if defined(LIBC_SCCS) && !defined(lint) 35fcd7f38fSTim J. Robbins static char sccsid[] = "@(#)strstr.c 8.1 (Berkeley) 6/4/93"; 369829d36aSTakuya SHIOZAKI #endif /* LIBC_SCCS and not lint */ 37333fc21eSDavid E. O'Brien #endif 38fcd7f38fSTim J. Robbins #include <sys/cdefs.h> 39de5fe5d5SDavid E. O'Brien __FBSDID("$FreeBSD$"); 409829d36aSTakuya SHIOZAKI 419829d36aSTakuya SHIOZAKI #include <wchar.h> 429829d36aSTakuya SHIOZAKI 43fcd7f38fSTim J. Robbins /* 44fcd7f38fSTim J. Robbins * Find the first occurrence of find in s. 45fcd7f38fSTim J. Robbins */ 469829d36aSTakuya SHIOZAKI wchar_t * 47fcd7f38fSTim J. Robbins wcsstr(const wchar_t * __restrict s, const wchar_t * __restrict find) 489829d36aSTakuya SHIOZAKI { 49fcd7f38fSTim J. Robbins wchar_t c, sc; 50fcd7f38fSTim J. Robbins size_t len; 519829d36aSTakuya SHIOZAKI 52bd604b4bSDaniel Gerzo if ((c = *find++) != L'\0') { 53fcd7f38fSTim J. Robbins len = wcslen(find); 54fcd7f38fSTim J. Robbins do { 55fcd7f38fSTim J. Robbins do { 56fcd7f38fSTim J. Robbins if ((sc = *s++) == L'\0') 57fcd7f38fSTim J. Robbins return (NULL); 58fcd7f38fSTim J. Robbins } while (sc != c); 59fcd7f38fSTim J. Robbins } while (wcsncmp(s, find, len) != 0); 60fcd7f38fSTim J. Robbins s--; 619829d36aSTakuya SHIOZAKI } 62fcd7f38fSTim J. Robbins return ((wchar_t *)s); 639829d36aSTakuya SHIOZAKI } 64