projects / apple / libc.git / blame
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|---|---|---|
| 9385eb3d A |
1 | /*- |
| 2 | * Copyright (c) 1990, 1993 | |
| e9ce8d39 A |
3 | * The Regents of the University of California. All rights reserved. |
| 4 | * | |
| 224c7076 A |
5 | * This code is derived from software contributed to Berkeley by |
| 6 | * Chris Torek. | |
| 7 | * | |
| e9ce8d39 A |
8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions | |
| 10 | * are met: | |
| 11 | * 1. Redistributions of source code must retain the above copyright | |
| 12 | * notice, this list of conditions and the following disclaimer. | |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 14 | * notice, this list of conditions and the following disclaimer in the | |
| 15 | * documentation and/or other materials provided with the distribution. | |
| e9ce8d39 A |
16 | * 4. Neither the name of the University nor the names of its contributors |
| 17 | * may be used to endorse or promote products derived from this software | |
| 18 | * without specific prior written permission. | |
| 19 | * | |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 30 | * SUCH DAMAGE. | |
| 31 | */ | |
| 32 | ||
| 9385eb3d | 33 | #include <sys/cdefs.h> |
| 1f2f436a | 34 | __FBSDID("$FreeBSD: src/lib/libc/string/strcasestr.c,v 1.5 2009/02/03 17:58:20 danger Exp $"); |
| 224c7076 A |
35 | |
| 36 | #include "xlocale_private.h" | |
| e9ce8d39 | 37 | |
| 224c7076 A |
38 | #include <ctype.h> |
| 39 | #include <string.h> | |
| e9ce8d39 A |
40 | |
| 41 | /* | |
| 224c7076 | 42 | * Find the first occurrence of find in s, ignore case. |
| e9ce8d39 | 43 | */ |
| 224c7076 A |
44 | char * |
| 45 | strcasestr_l(s, find, loc) | |
| 46 | const char *s, *find; | |
| 47 | locale_t loc; | |
| e9ce8d39 | 48 | { |
| 224c7076 A |
49 | char c, sc; |
| 50 | size_t len; | |
| e9ce8d39 | 51 | |
| 224c7076 A |
52 | NORMALIZE_LOCALE(loc); |
| 53 | if ((c = *find++) != 0) { | |
| 54 | c = tolower_l((unsigned char)c, loc); | |
| 55 | len = strlen(find); | |
| 56 | do { | |
| 57 | do { | |
| 58 | if ((sc = *s++) == 0) | |
| 59 | return (NULL); | |
| 60 | } while ((char)tolower_l((unsigned char)sc, loc) != c); | |
| 61 | } while (strncasecmp_l(s, find, len, loc) != 0); | |
| 62 | s--; | |
| 63 | } | |
| 64 | return ((char *)s); | |
| 65 | } | |
| 66 | ||
| 67 | char * | |
| 1f2f436a | 68 | strcasestr(const char *s, const char *find) |
| 224c7076 A |
69 | { |
| 70 | return strcasestr_l(s, find, __current_locale()); | |
| e9ce8d39 | 71 | } |