xref: /illumos-gate/usr/src/boot/libsa/strcasecmp.c (revision 22028508)
1199767f8SToomas Soome /*
2199767f8SToomas Soome  * Copyright (c) 1987, 1993
3199767f8SToomas Soome  *	The Regents of the University of California.  All rights reserved.
4199767f8SToomas Soome  *
5199767f8SToomas Soome  * Redistribution and use in source and binary forms, with or without
6199767f8SToomas Soome  * modification, are permitted provided that the following conditions
7199767f8SToomas Soome  * are met:
8199767f8SToomas Soome  * 1. Redistributions of source code must retain the above copyright
9199767f8SToomas Soome  *    notice, this list of conditions and the following disclaimer.
10199767f8SToomas Soome  * 2. Redistributions in binary form must reproduce the above copyright
11199767f8SToomas Soome  *    notice, this list of conditions and the following disclaimer in the
12199767f8SToomas Soome  *    documentation and/or other materials provided with the distribution.
131974da4bSToomas Soome  * 3. Neither the name of the University nor the names of its contributors
14199767f8SToomas Soome  *    may be used to endorse or promote products derived from this software
15199767f8SToomas Soome  *    without specific prior written permission.
16199767f8SToomas Soome  *
17199767f8SToomas Soome  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18199767f8SToomas Soome  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19199767f8SToomas Soome  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20199767f8SToomas Soome  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21199767f8SToomas Soome  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22199767f8SToomas Soome  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23199767f8SToomas Soome  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24199767f8SToomas Soome  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25199767f8SToomas Soome  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26199767f8SToomas Soome  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27199767f8SToomas Soome  * SUCH DAMAGE.
28199767f8SToomas Soome  */
29199767f8SToomas Soome 
30199767f8SToomas Soome #include <sys/cdefs.h>
31199767f8SToomas Soome 
32199767f8SToomas Soome #include <sys/cdefs.h>
33199767f8SToomas Soome #include <string.h>
34199767f8SToomas Soome #include "stand.h"
35199767f8SToomas Soome 
36199767f8SToomas Soome int
strcasecmp(const char * s1,const char * s2)370384eafeSToomas Soome strcasecmp(const char *s1, const char *s2)
38199767f8SToomas Soome {
390384eafeSToomas Soome 	const uchar_t *us1 = (const uchar_t *)s1;
400384eafeSToomas Soome 	const uchar_t *us2 = (const uchar_t *)s2;
41199767f8SToomas Soome 
42199767f8SToomas Soome 	while (tolower(*us1) == tolower(*us2++))
43199767f8SToomas Soome 		if (*us1++ == '\0')
44199767f8SToomas Soome 			return (0);
45199767f8SToomas Soome 	return (tolower(*us1) - tolower(*--us2));
46199767f8SToomas Soome }
47199767f8SToomas Soome 
48199767f8SToomas Soome int
strncasecmp(const char * s1,const char * s2,size_t n)490384eafeSToomas Soome strncasecmp(const char *s1, const char *s2, size_t n)
50199767f8SToomas Soome {
51199767f8SToomas Soome 	if (n != 0) {
520384eafeSToomas Soome 		const uchar_t *us1 = (const uchar_t *)s1;
530384eafeSToomas Soome 		const uchar_t *us2 = (const uchar_t *)s2;
54199767f8SToomas Soome 
55199767f8SToomas Soome 		do {
56199767f8SToomas Soome 			if (tolower(*us1) != tolower(*us2++))
57199767f8SToomas Soome 				return (tolower(*us1) - tolower(*--us2));
58199767f8SToomas Soome 			if (*us1++ == '\0')
59199767f8SToomas Soome 				break;
60199767f8SToomas Soome 		} while (--n != 0);
61199767f8SToomas Soome 	}
62199767f8SToomas Soome 	return (0);
63199767f8SToomas Soome }
64