1 /* This file is part of GNU Mailutils
2 Copyright (C) 2009-2021 Free Software Foundation, Inc.
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 3 of the License, or (at your option) any later version.
8
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General
15 Public License along with this library. If not, see
16 <http://www.gnu.org/licenses/>. */
17
18 #ifdef HAVE_CONFIG_H
19 # include <config.h>
20 #endif
21 #include <stddef.h>
22 #include <mailutils/cctype.h>
23
24 int
mu_c_strcasecmp(const char * a,const char * b)25 mu_c_strcasecmp (const char *a, const char *b)
26 {
27 int d = 0;
28 for (; d == 0; a++, b++)
29 {
30 int ac = (int) *a;
31 int bc = (int) *b;
32 if (ac == 0 || bc == 0)
33 return ac - bc;
34 if (mu_isascii (ac) && mu_isascii (bc))
35 d = mu_toupper (ac) - mu_toupper (bc);
36 else
37 d = ac - bc;
38 }
39 return d;
40 }
41
42 int
mu_c_strncasecmp(const char * a,const char * b,size_t n)43 mu_c_strncasecmp (const char *a, const char *b, size_t n)
44 {
45 int d = 0;
46 for (; d == 0 && n > 0; a++, b++, n--)
47 {
48 int ac = (int) *a;
49 int bc = (int) *b;
50 if (ac == 0 || bc == 0)
51 return ac - bc;
52 if (mu_isascii (ac) && mu_isascii (bc))
53 d = mu_toupper (ac) - mu_toupper (bc);
54 else
55 d = ac - bc;
56 }
57 return d;
58 }
59