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f7a9f785 | 1 | /* Copyright (C) 1991-2016 Free Software Foundation, Inc. |
6d52618b | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
6d52618b | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 8 | |
6d52618b UD |
9 | The GNU C 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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 | 17 | |
c84142e8 UD |
18 | #ifdef HAVE_CONFIG_H |
19 | # include <config.h> | |
20 | #endif | |
21 | ||
28f540f4 | 22 | #include <ctype.h> |
c84142e8 UD |
23 | #include <string.h> |
24 | ||
3bc9b83f | 25 | #ifndef _LIBC |
c84142e8 | 26 | # define __strcasecmp strcasecmp |
0501d603 UD |
27 | # define TOLOWER(Ch) tolower (Ch) |
28 | #else | |
3bc9b83f | 29 | # include <locale/localeinfo.h> |
0501d603 UD |
30 | # ifdef USE_IN_EXTENDED_LOCALE_MODEL |
31 | # define __strcasecmp __strcasecmp_l | |
0501d603 | 32 | # endif |
3bc9b83f | 33 | # define TOLOWER(Ch) __tolower_l ((Ch), loc) |
0501d603 UD |
34 | #endif |
35 | ||
36 | #ifdef USE_IN_EXTENDED_LOCALE_MODEL | |
80d9be81 | 37 | # define LOCALE_PARAM , __locale_t loc |
0501d603 UD |
38 | #else |
39 | # define LOCALE_PARAM | |
c84142e8 | 40 | #endif |
28f540f4 RM |
41 | |
42 | /* Compare S1 and S2, ignoring case, returning less than, equal to or | |
6d52618b | 43 | greater than zero if S1 is lexicographically less than, |
28f540f4 RM |
44 | equal to or greater than S2. */ |
45 | int | |
80d9be81 | 46 | __strcasecmp (const char *s1, const char *s2 LOCALE_PARAM) |
28f540f4 | 47 | { |
3bc9b83f UD |
48 | #if defined _LIBC && !defined USE_IN_EXTENDED_LOCALE_MODEL |
49 | __locale_t loc = _NL_CURRENT_LOCALE; | |
50 | #endif | |
c84142e8 UD |
51 | const unsigned char *p1 = (const unsigned char *) s1; |
52 | const unsigned char *p2 = (const unsigned char *) s2; | |
516a9b2a | 53 | int result; |
28f540f4 RM |
54 | |
55 | if (p1 == p2) | |
56 | return 0; | |
57 | ||
516a9b2a UD |
58 | while ((result = TOLOWER (*p1) - TOLOWER (*p2++)) == 0) |
59 | if (*p1++ == '\0') | |
60 | break; | |
28f540f4 | 61 | |
516a9b2a | 62 | return result; |
28f540f4 | 63 | } |
0501d603 | 64 | #ifndef __strcasecmp |
37ba7d66 | 65 | libc_hidden_def (__strcasecmp) |
3ec41e03 | 66 | weak_alias (__strcasecmp, strcasecmp) |
c84142e8 | 67 | #endif |