1*0a6a1f1dSLionel Sambuc #ifdef HAVE_CONFIG_H
2*0a6a1f1dSLionel Sambuc #include "config.h"
3*0a6a1f1dSLionel Sambuc #endif
4*0a6a1f1dSLionel Sambuc
5*0a6a1f1dSLionel Sambuc #ifdef HAVE_STRCASESTR
6*0a6a1f1dSLionel Sambuc
7*0a6a1f1dSLionel Sambuc int dummy;
8*0a6a1f1dSLionel Sambuc
9*0a6a1f1dSLionel Sambuc #else
10*0a6a1f1dSLionel Sambuc
11*0a6a1f1dSLionel Sambuc /* ($)NetBSD: strcasestr.c,v 1.2 2005/02/09 21:35:47 kleink Exp $ */
12*0a6a1f1dSLionel Sambuc
13*0a6a1f1dSLionel Sambuc /*-
14*0a6a1f1dSLionel Sambuc * Copyright (c) 1990, 1993
15*0a6a1f1dSLionel Sambuc * The Regents of the University of California. All rights reserved.
16*0a6a1f1dSLionel Sambuc *
17*0a6a1f1dSLionel Sambuc * This code is derived from software contributed to Berkeley by
18*0a6a1f1dSLionel Sambuc * Chris Torek.
19*0a6a1f1dSLionel Sambuc *
20*0a6a1f1dSLionel Sambuc * Redistribution and use in source and binary forms, with or without
21*0a6a1f1dSLionel Sambuc * modification, are permitted provided that the following conditions
22*0a6a1f1dSLionel Sambuc * are met:
23*0a6a1f1dSLionel Sambuc * 1. Redistributions of source code must retain the above copyright
24*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer.
25*0a6a1f1dSLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
26*0a6a1f1dSLionel Sambuc * notice, this list of conditions and the following disclaimer in the
27*0a6a1f1dSLionel Sambuc * documentation and/or other materials provided with the distribution.
28*0a6a1f1dSLionel Sambuc * 3. Neither the name of the University nor the names of its contributors
29*0a6a1f1dSLionel Sambuc * may be used to endorse or promote products derived from this software
30*0a6a1f1dSLionel Sambuc * without specific prior written permission.
31*0a6a1f1dSLionel Sambuc *
32*0a6a1f1dSLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
33*0a6a1f1dSLionel Sambuc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
34*0a6a1f1dSLionel Sambuc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
35*0a6a1f1dSLionel Sambuc * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
36*0a6a1f1dSLionel Sambuc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37*0a6a1f1dSLionel Sambuc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38*0a6a1f1dSLionel Sambuc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39*0a6a1f1dSLionel Sambuc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
40*0a6a1f1dSLionel Sambuc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
41*0a6a1f1dSLionel Sambuc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42*0a6a1f1dSLionel Sambuc * SUCH DAMAGE.
43*0a6a1f1dSLionel Sambuc */
44*0a6a1f1dSLionel Sambuc
45*0a6a1f1dSLionel Sambuc #include <sys/types.h>
46*0a6a1f1dSLionel Sambuc #include <ctype.h>
47*0a6a1f1dSLionel Sambuc #include <string.h>
48*0a6a1f1dSLionel Sambuc
49*0a6a1f1dSLionel Sambuc #define __UNCONST(a) ((void *)(unsigned long)(const void *)(a))
50*0a6a1f1dSLionel Sambuc
51*0a6a1f1dSLionel Sambuc /*
52*0a6a1f1dSLionel Sambuc * Find the first occurrence of find in s, ignore case.
53*0a6a1f1dSLionel Sambuc */
54*0a6a1f1dSLionel Sambuc char *
strcasestr(const char * s,const char * find)55*0a6a1f1dSLionel Sambuc strcasestr(const char *s, const char *find)
56*0a6a1f1dSLionel Sambuc {
57*0a6a1f1dSLionel Sambuc char c, sc;
58*0a6a1f1dSLionel Sambuc size_t len;
59*0a6a1f1dSLionel Sambuc
60*0a6a1f1dSLionel Sambuc if ((c = *find++) != 0) {
61*0a6a1f1dSLionel Sambuc c = tolower((unsigned char)c);
62*0a6a1f1dSLionel Sambuc len = strlen(find);
63*0a6a1f1dSLionel Sambuc do {
64*0a6a1f1dSLionel Sambuc do {
65*0a6a1f1dSLionel Sambuc if ((sc = *s++) == 0)
66*0a6a1f1dSLionel Sambuc return (NULL);
67*0a6a1f1dSLionel Sambuc } while ((char)tolower((unsigned char)sc) != c);
68*0a6a1f1dSLionel Sambuc } while (strncasecmp(s, find, len) != 0);
69*0a6a1f1dSLionel Sambuc s--;
70*0a6a1f1dSLionel Sambuc }
71*0a6a1f1dSLionel Sambuc return __UNCONST(s);
72*0a6a1f1dSLionel Sambuc }
73*0a6a1f1dSLionel Sambuc
74*0a6a1f1dSLionel Sambuc #endif
75