1 /*
2 * Copyright 1990 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
4 */
5
6 /*
7 * Copyright (c) 1987 Regents of the University of California.
8 * All rights reserved. The Berkeley software License Agreement
9 * specifies the terms and conditions for redistribution.
10 */
11
12 #pragma ident "%Z%%M% %I% %E% SMI"
13
14 /*
15 * This array is designed for mapping upper and lower case letter
16 * together for a case independent comparison. The mappings are
17 * based upon ascii character sequences.
18 */
19 static char charmap[] = {
20 '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
21 '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
22 '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
23 '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
24 '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
25 '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
26 '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
27 '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
28 '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
29 '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
30 '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
31 '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
32 '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
33 '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
34 '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
35 '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
36 '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
37 '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
38 '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
39 '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
40 '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
41 '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
42 '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
43 '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
44 '\300', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
45 '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
46 '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
47 '\370', '\371', '\372', '\333', '\334', '\335', '\336', '\337',
48 '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
49 '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
50 '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
51 '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
52 };
53
54 int
strcasecmp(char * s1,char * s2)55 strcasecmp(char *s1, char *s2)
56 {
57 char *cm = charmap;
58
59 while (cm[*s1] == cm[*s2++])
60 if (*s1++ == '\0')
61 return (0);
62 return(cm[*s1] - cm[*--s2]);
63 }
64
65 int
strncasecmp(char * s1,char * s2,int n)66 strncasecmp(char *s1, char *s2, int n)
67 {
68 char *cm = charmap;
69
70 while (--n >= 0 && cm[*s1] == cm[*s2++])
71 if (*s1++ == '\0')
72 return (0);
73 return(n < 0 ? 0 : cm[*s1] - cm[*--s2]);
74 }
75
76 /*
77 * For 4.0 compatibility
78 */
79 int
stricmp(char * s1,char * s2)80 stricmp(char *s1, char *s2)
81 {
82 return (strcasecmp(s1, s2));
83 }
84
85 int
strnicmp(char * s1,char * s2,int n)86 strnicmp(char *s1, char *s2, int n)
87 {
88 return (strncasecmp(s1, s2, n));
89 }
90