1 |
|
|
/* $OpenBSD: strcasecmp.c,v 1.7 2015/08/31 02:53:57 guenther Exp $ */ |
2 |
|
|
|
3 |
|
|
/* |
4 |
|
|
* Copyright (c) 1987, 1993 |
5 |
|
|
* The Regents of the University of California. All rights reserved. |
6 |
|
|
* |
7 |
|
|
* Redistribution and use in source and binary forms, with or without |
8 |
|
|
* modification, are permitted provided that the following conditions |
9 |
|
|
* are met: |
10 |
|
|
* 1. Redistributions of source code must retain the above copyright |
11 |
|
|
* notice, this list of conditions and the following disclaimer. |
12 |
|
|
* 2. Redistributions in binary form must reproduce the above copyright |
13 |
|
|
* notice, this list of conditions and the following disclaimer in the |
14 |
|
|
* documentation and/or other materials provided with the distribution. |
15 |
|
|
* 3. Neither the name of the University nor the names of its contributors |
16 |
|
|
* may be used to endorse or promote products derived from this software |
17 |
|
|
* without specific prior written permission. |
18 |
|
|
* |
19 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
20 |
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
21 |
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
22 |
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
23 |
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 |
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
25 |
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 |
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 |
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 |
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 |
|
|
* SUCH DAMAGE. |
30 |
|
|
*/ |
31 |
|
|
|
32 |
|
|
#include <string.h> |
33 |
|
|
|
34 |
|
|
typedef unsigned char u_char; |
35 |
|
|
|
36 |
|
|
/* |
37 |
|
|
* This array is designed for mapping upper and lower case letter |
38 |
|
|
* together for a case independent comparison. The mappings are |
39 |
|
|
* based upon ascii character sequences. |
40 |
|
|
*/ |
41 |
|
|
static const u_char charmap[] = { |
42 |
|
|
'\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007', |
43 |
|
|
'\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017', |
44 |
|
|
'\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027', |
45 |
|
|
'\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037', |
46 |
|
|
'\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047', |
47 |
|
|
'\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057', |
48 |
|
|
'\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067', |
49 |
|
|
'\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077', |
50 |
|
|
'\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147', |
51 |
|
|
'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', |
52 |
|
|
'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', |
53 |
|
|
'\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137', |
54 |
|
|
'\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147', |
55 |
|
|
'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', |
56 |
|
|
'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', |
57 |
|
|
'\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177', |
58 |
|
|
'\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207', |
59 |
|
|
'\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217', |
60 |
|
|
'\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227', |
61 |
|
|
'\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237', |
62 |
|
|
'\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247', |
63 |
|
|
'\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257', |
64 |
|
|
'\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267', |
65 |
|
|
'\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277', |
66 |
|
|
'\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307', |
67 |
|
|
'\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317', |
68 |
|
|
'\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327', |
69 |
|
|
'\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337', |
70 |
|
|
'\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347', |
71 |
|
|
'\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357', |
72 |
|
|
'\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367', |
73 |
|
|
'\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377', |
74 |
|
|
}; |
75 |
|
|
|
76 |
|
|
int |
77 |
|
|
strcasecmp(const char *s1, const char *s2) |
78 |
|
|
{ |
79 |
|
|
const u_char *cm = charmap; |
80 |
|
|
const u_char *us1 = (const u_char *)s1; |
81 |
|
|
const u_char *us2 = (const u_char *)s2; |
82 |
|
|
|
83 |
✓✓ |
6236 |
while (cm[*us1] == cm[*us2++]) |
84 |
✓✓ |
1438 |
if (*us1++ == '\0') |
85 |
|
224 |
return (0); |
86 |
|
1450 |
return (cm[*us1] - cm[*--us2]); |
87 |
|
1674 |
} |
88 |
|
|
DEF_WEAK(strcasecmp); |
89 |
|
|
|
90 |
|
|
int |
91 |
|
|
strncasecmp(const char *s1, const char *s2, size_t n) |
92 |
|
|
{ |
93 |
✓✗ |
548 |
if (n != 0) { |
94 |
|
|
const u_char *cm = charmap; |
95 |
|
|
const u_char *us1 = (const u_char *)s1; |
96 |
|
|
const u_char *us2 = (const u_char *)s2; |
97 |
|
|
|
98 |
|
274 |
do { |
99 |
✓✓ |
510 |
if (cm[*us1] != cm[*us2++]) |
100 |
|
254 |
return (cm[*us1] - cm[*--us2]); |
101 |
✓✗ |
256 |
if (*us1++ == '\0') |
102 |
|
|
break; |
103 |
✓✓ |
256 |
} while (--n != 0); |
104 |
✓✓ |
20 |
} |
105 |
|
20 |
return (0); |
106 |
|
274 |
} |
107 |
|
|
DEF_WEAK(strncasecmp); |