1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2013 Garrett D'Amore <garrett@damore.org>
24 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
25 */
26
27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * Portions of this source code were derived from Berkeley 4.3 BSD
32 * under license from the Regents of the University of California.
33 */
34
35 #include "lint.h"
36 #include <sys/types.h>
37 #include <strings.h>
38 #include <ctype.h>
39 #include <locale.h>
40 #include "localeimpl.h"
41 #include "lctype.h"
42
43 int
strcasecmp_l(const char * s1,const char * s2,locale_t loc)44 strcasecmp_l(const char *s1, const char *s2, locale_t loc)
45 {
46 extern int ascii_strcasecmp(const char *s1, const char *s2);
47 const int *cm;
48 const uchar_t *us1;
49 const uchar_t *us2;
50 const struct lc_ctype *lct = loc->ctype;
51
52 /*
53 * If we are in a locale that uses the ASCII character set
54 * (C or POSIX), use the fast ascii_strcasecmp() function.
55 */
56 if (lct->lc_is_ascii)
57 return (ascii_strcasecmp(s1, s2));
58
59 cm = lct->lc_trans_lower;
60 us1 = (const uchar_t *)s1;
61 us2 = (const uchar_t *)s2;
62
63 while (cm[*us1] == cm[*us2++])
64 if (*us1++ == '\0')
65 return (0);
66 return (cm[*us1] - cm[*(us2 - 1)]);
67 }
68
69 int
strcasecmp(const char * s1,const char * s2)70 strcasecmp(const char *s1, const char *s2)
71 {
72 /* would be nice to avoid uselocale()... but I don't see how */
73 return (strcasecmp_l(s1, s2, uselocale(NULL)));
74 }
75