1 /*
2 ** Copyright 2001, Travis Geiselbrecht. All rights reserved.
3 ** Distributed under the terms of the NewOS License.
4 */
5 /*
6 * Copyright (c) 2008 Travis Geiselbrecht
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining
9 * a copy of this software and associated documentation files
10 * (the "Software"), to deal in the Software without restriction,
11 * including without limitation the rights to use, copy, modify, merge,
12 * publish, distribute, sublicense, and/or sell copies of the Software,
13 * and to permit persons to whom the Software is furnished to do so,
14 * subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be
17 * included in all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
23 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 */
27 #include <string.h>
28 #include <ctype.h>
29 #include <sys/types.h>
30
31 int
strnicmp(char const * s1,char const * s2,size_t len)32 strnicmp(char const *s1, char const *s2, size_t len)
33 {
34 unsigned char c1 = '\0';
35 unsigned char c2 = '\0';
36
37 if (len > 0) {
38 do {
39 c1 = *s1;
40 c2 = *s2;
41 s1++;
42 s2++;
43 if (!c1)
44 break;
45 if (!c2)
46 break;
47 if (c1 == c2)
48 continue;
49 c1 = tolower(c1);
50 c2 = tolower(c2);
51 if (c1 != c2)
52 break;
53 } while (--len);
54 }
55 return (int)c1 - (int)c2;
56 }
57 #pragma weak strncasecmp=strnicmp
58