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a09e091a JB |
1 | /*- |
2 | * Copyright (c) 1990, 1993 | |
3 | * The Regents of the University of California. All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * Chris Torek. | |
7 | * | |
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. | |
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 | ||
33 | #ifdef HAVE_DIX_CONFIG_H | |
34 | #include <dix-config.h> | |
35 | #endif | |
36 | ||
37 | #include <ctype.h> | |
38 | #include <string.h> | |
39 | #include "dix.h" | |
40 | ||
41 | /* | |
42 | * Find the first occurrence of find in s, ignore case. | |
43 | */ | |
44 | #ifndef HAVE_STRCASESTR | |
45 | char * | |
46 | xstrcasestr(const char *s, const char *find) | |
47 | { | |
48 | char c, sc; | |
49 | size_t len; | |
50 | ||
51 | if ((c = *find++) != 0) { | |
52 | c = tolower((unsigned char) c); | |
53 | len = strlen(find); | |
54 | do { | |
55 | do { | |
56 | if ((sc = *s++) == 0) | |
57 | return NULL; | |
58 | } while ((char) tolower((unsigned char) sc) != c); | |
59 | } while (strncasecmp(s, find, len) != 0); | |
60 | s--; | |
61 | } | |
62 | return ((char *) s); | |
63 | } | |
64 | #endif |