| 1 |
6 |
jlechner |
/*
|
| 2 |
|
|
* Copyright (c) 1987 Regents of the University of California.
|
| 3 |
|
|
* All rights reserved.
|
| 4 |
|
|
*
|
| 5 |
|
|
* Redistribution and use in source and binary forms are permitted
|
| 6 |
|
|
* provided that this notice is preserved and that due credit is given
|
| 7 |
|
|
* to the University of California at Berkeley. The name of the University
|
| 8 |
|
|
* may not be used to endorse or promote products derived from this
|
| 9 |
|
|
* software without specific written prior permission. This software
|
| 10 |
|
|
* is provided ``as is'' without express or implied warranty.
|
| 11 |
|
|
*/
|
| 12 |
|
|
|
| 13 |
|
|
/*
|
| 14 |
|
|
|
| 15 |
|
|
@deftypefn Supplemental int strcasecmp (const char *@var{s1}, const char *@var{s2})
|
| 16 |
|
|
|
| 17 |
|
|
A case-insensitive @code{strcmp}.
|
| 18 |
|
|
|
| 19 |
|
|
@end deftypefn
|
| 20 |
|
|
|
| 21 |
|
|
*/
|
| 22 |
|
|
|
| 23 |
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
| 24 |
|
|
static char sccsid[] = "@(#)strcasecmp.c 5.5 (Berkeley) 11/24/87";
|
| 25 |
|
|
#endif /* LIBC_SCCS and not lint */
|
| 26 |
|
|
|
| 27 |
|
|
#include <ansidecl.h>
|
| 28 |
|
|
#include <stddef.h>
|
| 29 |
|
|
|
| 30 |
|
|
/*
|
| 31 |
|
|
* This array is designed for mapping upper and lower case letter
|
| 32 |
|
|
* together for a case independent comparison. The mappings are
|
| 33 |
|
|
* based upon ascii character sequences.
|
| 34 |
|
|
*/
|
| 35 |
|
|
typedef unsigned char uc;
|
| 36 |
|
|
static const unsigned char charmap[] = {
|
| 37 |
|
|
(uc)'\000',(uc)'\001',(uc)'\002',(uc)'\003',(uc)'\004',(uc)'\005',(uc)'\006',(uc)'\007',
|
| 38 |
|
|
(uc)'\010',(uc)'\011',(uc)'\012',(uc)'\013',(uc)'\014',(uc)'\015',(uc)'\016',(uc)'\017',
|
| 39 |
|
|
(uc)'\020',(uc)'\021',(uc)'\022',(uc)'\023',(uc)'\024',(uc)'\025',(uc)'\026',(uc)'\027',
|
| 40 |
|
|
(uc)'\030',(uc)'\031',(uc)'\032',(uc)'\033',(uc)'\034',(uc)'\035',(uc)'\036',(uc)'\037',
|
| 41 |
|
|
(uc)'\040',(uc)'\041',(uc)'\042',(uc)'\043',(uc)'\044',(uc)'\045',(uc)'\046',(uc)'\047',
|
| 42 |
|
|
(uc)'\050',(uc)'\051',(uc)'\052',(uc)'\053',(uc)'\054',(uc)'\055',(uc)'\056',(uc)'\057',
|
| 43 |
|
|
(uc)'\060',(uc)'\061',(uc)'\062',(uc)'\063',(uc)'\064',(uc)'\065',(uc)'\066',(uc)'\067',
|
| 44 |
|
|
(uc)'\070',(uc)'\071',(uc)'\072',(uc)'\073',(uc)'\074',(uc)'\075',(uc)'\076',(uc)'\077',
|
| 45 |
|
|
(uc)'\100',(uc)'\141',(uc)'\142',(uc)'\143',(uc)'\144',(uc)'\145',(uc)'\146',(uc)'\147',
|
| 46 |
|
|
(uc)'\150',(uc)'\151',(uc)'\152',(uc)'\153',(uc)'\154',(uc)'\155',(uc)'\156',(uc)'\157',
|
| 47 |
|
|
(uc)'\160',(uc)'\161',(uc)'\162',(uc)'\163',(uc)'\164',(uc)'\165',(uc)'\166',(uc)'\167',
|
| 48 |
|
|
(uc)'\170',(uc)'\171',(uc)'\172',(uc)'\133',(uc)'\134',(uc)'\135',(uc)'\136',(uc)'\137',
|
| 49 |
|
|
(uc)'\140',(uc)'\141',(uc)'\142',(uc)'\143',(uc)'\144',(uc)'\145',(uc)'\146',(uc)'\147',
|
| 50 |
|
|
(uc)'\150',(uc)'\151',(uc)'\152',(uc)'\153',(uc)'\154',(uc)'\155',(uc)'\156',(uc)'\157',
|
| 51 |
|
|
(uc)'\160',(uc)'\161',(uc)'\162',(uc)'\163',(uc)'\164',(uc)'\165',(uc)'\166',(uc)'\167',
|
| 52 |
|
|
(uc)'\170',(uc)'\171',(uc)'\172',(uc)'\173',(uc)'\174',(uc)'\175',(uc)'\176',(uc)'\177',
|
| 53 |
|
|
(uc)'\200',(uc)'\201',(uc)'\202',(uc)'\203',(uc)'\204',(uc)'\205',(uc)'\206',(uc)'\207',
|
| 54 |
|
|
(uc)'\210',(uc)'\211',(uc)'\212',(uc)'\213',(uc)'\214',(uc)'\215',(uc)'\216',(uc)'\217',
|
| 55 |
|
|
(uc)'\220',(uc)'\221',(uc)'\222',(uc)'\223',(uc)'\224',(uc)'\225',(uc)'\226',(uc)'\227',
|
| 56 |
|
|
(uc)'\230',(uc)'\231',(uc)'\232',(uc)'\233',(uc)'\234',(uc)'\235',(uc)'\236',(uc)'\237',
|
| 57 |
|
|
(uc)'\240',(uc)'\241',(uc)'\242',(uc)'\243',(uc)'\244',(uc)'\245',(uc)'\246',(uc)'\247',
|
| 58 |
|
|
(uc)'\250',(uc)'\251',(uc)'\252',(uc)'\253',(uc)'\254',(uc)'\255',(uc)'\256',(uc)'\257',
|
| 59 |
|
|
(uc)'\260',(uc)'\261',(uc)'\262',(uc)'\263',(uc)'\264',(uc)'\265',(uc)'\266',(uc)'\267',
|
| 60 |
|
|
(uc)'\270',(uc)'\271',(uc)'\272',(uc)'\273',(uc)'\274',(uc)'\275',(uc)'\276',(uc)'\277',
|
| 61 |
|
|
(uc)'\300',(uc)'\341',(uc)'\342',(uc)'\343',(uc)'\344',(uc)'\345',(uc)'\346',(uc)'\347',
|
| 62 |
|
|
(uc)'\350',(uc)'\351',(uc)'\352',(uc)'\353',(uc)'\354',(uc)'\355',(uc)'\356',(uc)'\357',
|
| 63 |
|
|
(uc)'\360',(uc)'\361',(uc)'\362',(uc)'\363',(uc)'\364',(uc)'\365',(uc)'\366',(uc)'\367',
|
| 64 |
|
|
(uc)'\370',(uc)'\371',(uc)'\372',(uc)'\333',(uc)'\334',(uc)'\335',(uc)'\336',(uc)'\337',
|
| 65 |
|
|
(uc)'\340',(uc)'\341',(uc)'\342',(uc)'\343',(uc)'\344',(uc)'\345',(uc)'\346',(uc)'\347',
|
| 66 |
|
|
(uc)'\350',(uc)'\351',(uc)'\352',(uc)'\353',(uc)'\354',(uc)'\355',(uc)'\356',(uc)'\357',
|
| 67 |
|
|
(uc)'\360',(uc)'\361',(uc)'\362',(uc)'\363',(uc)'\364',(uc)'\365',(uc)'\366',(uc)'\367',
|
| 68 |
|
|
(uc)'\370',(uc)'\371',(uc)'\372',(uc)'\373',(uc)'\374',(uc)'\375',(uc)'\376',(uc)'\377',
|
| 69 |
|
|
};
|
| 70 |
|
|
|
| 71 |
|
|
int
|
| 72 |
|
|
strcasecmp(const char *s1, const char *s2)
|
| 73 |
|
|
{
|
| 74 |
|
|
register unsigned char u1, u2;
|
| 75 |
|
|
|
| 76 |
|
|
for (;;) {
|
| 77 |
|
|
u1 = (unsigned char) *s1++;
|
| 78 |
|
|
u2 = (unsigned char) *s2++;
|
| 79 |
|
|
if (charmap[u1] != charmap[u2]) {
|
| 80 |
|
|
return charmap[u1] - charmap[u2];
|
| 81 |
|
|
}
|
| 82 |
|
|
if (u1 == '\0') {
|
| 83 |
|
|
return 0;
|
| 84 |
|
|
}
|
| 85 |
|
|
}
|
| 86 |
|
|
}
|
| 87 |
|
|
|
