diff options
Diffstat (limited to 'gl/strcasecmp.c')
-rw-r--r-- | gl/strcasecmp.c | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/gl/strcasecmp.c b/gl/strcasecmp.c deleted file mode 100644 index 99d5dd22..00000000 --- a/gl/strcasecmp.c +++ /dev/null | |||
@@ -1,103 +0,0 @@ | |||
1 | /* Case-insensitive string comparison function. | ||
2 | Copyright (C) 1998-1999, 2005-2006 Free Software Foundation, Inc. | ||
3 | Written by Bruno Haible <bruno@clisp.org>, 2005, | ||
4 | based on earlier glibc code. | ||
5 | |||
6 | This program is free software; you can redistribute it and/or modify | ||
7 | it under the terms of the GNU General Public License as published by | ||
8 | the Free Software Foundation; either version 2, or (at your option) | ||
9 | any later version. | ||
10 | |||
11 | This program is distributed in the hope that it will be useful, | ||
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | GNU General Public License for more details. | ||
15 | |||
16 | You should have received a copy of the GNU General Public License | ||
17 | along with this program; if not, write to the Free Software Foundation, | ||
18 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | ||
19 | |||
20 | #include <config.h> | ||
21 | |||
22 | /* Specification. */ | ||
23 | #include "strcase.h" | ||
24 | |||
25 | #include <ctype.h> | ||
26 | #include <limits.h> | ||
27 | |||
28 | #if HAVE_MBRTOWC | ||
29 | # include "mbuiter.h" | ||
30 | #endif | ||
31 | |||
32 | #define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch)) | ||
33 | |||
34 | /* Compare strings S1 and S2, ignoring case, returning less than, equal to or | ||
35 | greater than zero if S1 is lexicographically less than, equal to or greater | ||
36 | than S2. | ||
37 | Note: This function may, in multibyte locales, return 0 for strings of | ||
38 | different lengths! */ | ||
39 | int | ||
40 | strcasecmp (const char *s1, const char *s2) | ||
41 | { | ||
42 | if (s1 == s2) | ||
43 | return 0; | ||
44 | |||
45 | /* Be careful not to look at the entire extent of s1 or s2 until needed. | ||
46 | This is useful because when two strings differ, the difference is | ||
47 | most often already in the very few first characters. */ | ||
48 | #if HAVE_MBRTOWC | ||
49 | if (MB_CUR_MAX > 1) | ||
50 | { | ||
51 | mbui_iterator_t iter1; | ||
52 | mbui_iterator_t iter2; | ||
53 | |||
54 | mbui_init (iter1, s1); | ||
55 | mbui_init (iter2, s2); | ||
56 | |||
57 | while (mbui_avail (iter1) && mbui_avail (iter2)) | ||
58 | { | ||
59 | int cmp = mb_casecmp (mbui_cur (iter1), mbui_cur (iter2)); | ||
60 | |||
61 | if (cmp != 0) | ||
62 | return cmp; | ||
63 | |||
64 | mbui_advance (iter1); | ||
65 | mbui_advance (iter2); | ||
66 | } | ||
67 | if (mbui_avail (iter1)) | ||
68 | /* s2 terminated before s1. */ | ||
69 | return 1; | ||
70 | if (mbui_avail (iter2)) | ||
71 | /* s1 terminated before s2. */ | ||
72 | return -1; | ||
73 | return 0; | ||
74 | } | ||
75 | else | ||
76 | #endif | ||
77 | { | ||
78 | const unsigned char *p1 = (const unsigned char *) s1; | ||
79 | const unsigned char *p2 = (const unsigned char *) s2; | ||
80 | unsigned char c1, c2; | ||
81 | |||
82 | do | ||
83 | { | ||
84 | c1 = TOLOWER (*p1); | ||
85 | c2 = TOLOWER (*p2); | ||
86 | |||
87 | if (c1 == '\0') | ||
88 | break; | ||
89 | |||
90 | ++p1; | ||
91 | ++p2; | ||
92 | } | ||
93 | while (c1 == c2); | ||
94 | |||
95 | if (UCHAR_MAX <= INT_MAX) | ||
96 | return c1 - c2; | ||
97 | else | ||
98 | /* On machines where 'char' and 'int' are types of the same size, the | ||
99 | difference of two 'unsigned char' values - including the sign bit - | ||
100 | doesn't fit in an 'int'. */ | ||
101 | return (c1 > c2 ? 1 : c1 < c2 ? -1 : 0); | ||
102 | } | ||
103 | } | ||