189503316SAndrey A. Chernov /*- 2*8a16b7a1SPedro F. Giffuni * SPDX-License-Identifier: BSD-3-Clause 3*8a16b7a1SPedro F. Giffuni * 489503316SAndrey A. Chernov * Copyright (c) 1990, 1993 589503316SAndrey A. Chernov * The Regents of the University of California. All rights reserved. 689503316SAndrey A. Chernov * 789503316SAndrey A. Chernov * This code is derived from software contributed to Berkeley by 889503316SAndrey A. Chernov * Chris Torek. 989503316SAndrey A. Chernov * 103c87aa1dSDavid Chisnall * Copyright (c) 2011 The FreeBSD Foundation 113c87aa1dSDavid Chisnall * All rights reserved. 123c87aa1dSDavid Chisnall * Portions of this software were developed by David Chisnall 133c87aa1dSDavid Chisnall * under sponsorship from the FreeBSD Foundation. 143c87aa1dSDavid Chisnall * 1589503316SAndrey A. Chernov * Redistribution and use in source and binary forms, with or without 1689503316SAndrey A. Chernov * modification, are permitted provided that the following conditions 1789503316SAndrey A. Chernov * are met: 1889503316SAndrey A. Chernov * 1. Redistributions of source code must retain the above copyright 1989503316SAndrey A. Chernov * notice, this list of conditions and the following disclaimer. 2089503316SAndrey A. Chernov * 2. Redistributions in binary form must reproduce the above copyright 2189503316SAndrey A. Chernov * notice, this list of conditions and the following disclaimer in the 2289503316SAndrey A. Chernov * documentation and/or other materials provided with the distribution. 233fb3b97cSEd Maste * 3. Neither the name of the University nor the names of its contributors 2489503316SAndrey A. Chernov * may be used to endorse or promote products derived from this software 2589503316SAndrey A. Chernov * without specific prior written permission. 2689503316SAndrey A. Chernov * 2789503316SAndrey A. Chernov * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2889503316SAndrey A. Chernov * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2989503316SAndrey A. Chernov * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 3089503316SAndrey A. Chernov * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 3189503316SAndrey A. Chernov * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 3289503316SAndrey A. Chernov * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3389503316SAndrey A. Chernov * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3489503316SAndrey A. Chernov * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3589503316SAndrey A. Chernov * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3689503316SAndrey A. Chernov * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3789503316SAndrey A. Chernov * SUCH DAMAGE. 3889503316SAndrey A. Chernov */ 3989503316SAndrey A. Chernov 4089503316SAndrey A. Chernov #include <sys/cdefs.h> 41de5fe5d5SDavid E. O'Brien __FBSDID("$FreeBSD$"); 42de5fe5d5SDavid E. O'Brien 4389503316SAndrey A. Chernov #include <ctype.h> 4489503316SAndrey A. Chernov #include <string.h> 453c87aa1dSDavid Chisnall #include "xlocale_private.h" 4689503316SAndrey A. Chernov 4789503316SAndrey A. Chernov /* 4889503316SAndrey A. Chernov * Find the first occurrence of find in s, ignore case. 4989503316SAndrey A. Chernov */ 5089503316SAndrey A. Chernov char * 513c87aa1dSDavid Chisnall strcasestr_l(const char *s, const char *find, locale_t locale) 5289503316SAndrey A. Chernov { 538fb3f3f6SDavid E. O'Brien char c, sc; 548fb3f3f6SDavid E. O'Brien size_t len; 553c87aa1dSDavid Chisnall FIX_LOCALE(locale); 5689503316SAndrey A. Chernov 5789503316SAndrey A. Chernov if ((c = *find++) != 0) { 583c87aa1dSDavid Chisnall c = tolower_l((unsigned char)c, locale); 5989503316SAndrey A. Chernov len = strlen(find); 6089503316SAndrey A. Chernov do { 6189503316SAndrey A. Chernov do { 6289503316SAndrey A. Chernov if ((sc = *s++) == 0) 6389503316SAndrey A. Chernov return (NULL); 643c87aa1dSDavid Chisnall } while ((char)tolower_l((unsigned char)sc, locale) != c); 653c87aa1dSDavid Chisnall } while (strncasecmp_l(s, find, len, locale) != 0); 6689503316SAndrey A. Chernov s--; 6789503316SAndrey A. Chernov } 6889503316SAndrey A. Chernov return ((char *)s); 6989503316SAndrey A. Chernov } 703c87aa1dSDavid Chisnall char * 713c87aa1dSDavid Chisnall strcasestr(const char *s, const char *find) 723c87aa1dSDavid Chisnall { 733c87aa1dSDavid Chisnall return strcasestr_l(s, find, __get_locale()); 743c87aa1dSDavid Chisnall } 75