1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * Copyright (c) 1987 Regents of the University of California.
3*0Sstevel@tonic-gate * All rights reserved.
4*0Sstevel@tonic-gate *
5*0Sstevel@tonic-gate * Redistribution and use in source and binary forms are permitted
6*0Sstevel@tonic-gate * provided that the above copyright notice and this paragraph are
7*0Sstevel@tonic-gate * duplicated in all such forms and that any documentation,
8*0Sstevel@tonic-gate * advertising materials, and other materials related to such
9*0Sstevel@tonic-gate * distribution and use acknowledge that the software was developed
10*0Sstevel@tonic-gate * by the University of California, Berkeley. The name of the
11*0Sstevel@tonic-gate * University may not be used to endorse or promote products derived
12*0Sstevel@tonic-gate * from this software without specific prior written permission.
13*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14*0Sstevel@tonic-gate * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15*0Sstevel@tonic-gate * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16*0Sstevel@tonic-gate */
17*0Sstevel@tonic-gate
18*0Sstevel@tonic-gate #if defined(LIBC_SCCS) && !defined(lint)
19*0Sstevel@tonic-gate static char sccsid[] = "@(#)strcasecmp.c 5.6 (Berkeley) 6/27/88";
20*0Sstevel@tonic-gate #endif /* LIBC_SCCS and not lint */
21*0Sstevel@tonic-gate
22*0Sstevel@tonic-gate /* Some environments don't define u_char -- WZV */
23*0Sstevel@tonic-gate #if 0
24*0Sstevel@tonic-gate #include <sys/types.h>
25*0Sstevel@tonic-gate #else
26*0Sstevel@tonic-gate typedef unsigned char u_char;
27*0Sstevel@tonic-gate #endif
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate /*
30*0Sstevel@tonic-gate * This array is designed for mapping upper and lower case letter
31*0Sstevel@tonic-gate * together for a case independent comparison. The mappings are
32*0Sstevel@tonic-gate * based upon ascii character sequences.
33*0Sstevel@tonic-gate */
34*0Sstevel@tonic-gate static u_char charmap[] = {
35*0Sstevel@tonic-gate '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
36*0Sstevel@tonic-gate '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
37*0Sstevel@tonic-gate '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
38*0Sstevel@tonic-gate '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
39*0Sstevel@tonic-gate '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
40*0Sstevel@tonic-gate '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
41*0Sstevel@tonic-gate '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
42*0Sstevel@tonic-gate '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
43*0Sstevel@tonic-gate '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
44*0Sstevel@tonic-gate '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
45*0Sstevel@tonic-gate '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
46*0Sstevel@tonic-gate '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
47*0Sstevel@tonic-gate '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
48*0Sstevel@tonic-gate '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
49*0Sstevel@tonic-gate '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
50*0Sstevel@tonic-gate '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
51*0Sstevel@tonic-gate '\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
52*0Sstevel@tonic-gate '\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
53*0Sstevel@tonic-gate '\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
54*0Sstevel@tonic-gate '\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
55*0Sstevel@tonic-gate '\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
56*0Sstevel@tonic-gate '\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
57*0Sstevel@tonic-gate '\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
58*0Sstevel@tonic-gate '\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
59*0Sstevel@tonic-gate '\300', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
60*0Sstevel@tonic-gate '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
61*0Sstevel@tonic-gate '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
62*0Sstevel@tonic-gate '\370', '\371', '\372', '\333', '\334', '\335', '\336', '\337',
63*0Sstevel@tonic-gate '\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
64*0Sstevel@tonic-gate '\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
65*0Sstevel@tonic-gate '\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
66*0Sstevel@tonic-gate '\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
67*0Sstevel@tonic-gate };
68*0Sstevel@tonic-gate
strcasecmp(s1,s2)69*0Sstevel@tonic-gate strcasecmp(s1, s2)
70*0Sstevel@tonic-gate char *s1, *s2;
71*0Sstevel@tonic-gate {
72*0Sstevel@tonic-gate register u_char *cm = charmap,
73*0Sstevel@tonic-gate *us1 = (u_char *)s1,
74*0Sstevel@tonic-gate *us2 = (u_char *)s2;
75*0Sstevel@tonic-gate
76*0Sstevel@tonic-gate while (cm[*us1] == cm[*us2++])
77*0Sstevel@tonic-gate if (*us1++ == '\0')
78*0Sstevel@tonic-gate return(0);
79*0Sstevel@tonic-gate return(cm[*us1] - cm[*--us2]);
80*0Sstevel@tonic-gate }
81*0Sstevel@tonic-gate
strncasecmp(s1,s2,n)82*0Sstevel@tonic-gate strncasecmp(s1, s2, n)
83*0Sstevel@tonic-gate char *s1, *s2;
84*0Sstevel@tonic-gate register int n;
85*0Sstevel@tonic-gate {
86*0Sstevel@tonic-gate register u_char *cm = charmap,
87*0Sstevel@tonic-gate *us1 = (u_char *)s1,
88*0Sstevel@tonic-gate *us2 = (u_char *)s2;
89*0Sstevel@tonic-gate
90*0Sstevel@tonic-gate while (--n >= 0 && cm[*us1] == cm[*us2++])
91*0Sstevel@tonic-gate if (*us1++ == '\0')
92*0Sstevel@tonic-gate return(0);
93*0Sstevel@tonic-gate return(n < 0 ? 0 : cm[*us1] - cm[*--us2]);
94*0Sstevel@tonic-gate }
95