1 /* $OpenBSD: wcscasecmp.c,v 1.3 2015/09/12 16:23:14 guenther Exp $ */
2
3 /*
4 * Copyright (c) 2011 Marc Espie
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD
19 * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include <wchar.h>
29 #include <wctype.h>
30 #include "locale/runetype.h"
31
32 int
wcscasecmp(const wchar_t * s1,const wchar_t * s2)33 wcscasecmp(const wchar_t *s1, const wchar_t *s2)
34 {
35 wchar_t l1, l2;
36
37 while ((l1 = towlower(*s1++)) == (l2 = towlower(*s2++))) {
38 if (l1 == 0)
39 return (0);
40 }
41 /* XXX assumes wchar_t = int */
42 return ((rune_t)l1 - (rune_t)l2);
43 }
44 DEF_WEAK(wcscasecmp);
45
46 int
wcsncasecmp(const wchar_t * s1,const wchar_t * s2,size_t n)47 wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n)
48 {
49 wchar_t l1, l2;
50
51 if (n == 0)
52 return (0);
53 do {
54 if (((l1 = towlower(*s1++))) != (l2 = towlower(*s2++))) {
55 /* XXX assumes wchar_t = int */
56 return ((rune_t)l1 - (rune_t)l2);
57 }
58 if (l1 == 0)
59 break;
60 } while (--n != 0);
61 return (0);
62 }
63 DEF_WEAK(wcsncasecmp);
64