mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-27 15:59:30 +08:00
83 lines
3.3 KiB
C
83 lines
3.3 KiB
C
/*
|
|
* Copyright (c) 1987 Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that this notice is preserved and that due credit is given
|
|
* to the University of California at Berkeley. The name of the University
|
|
* may not be used to endorse or promote products derived from this
|
|
* software without specific written prior permission. This software
|
|
* is provided ``as is'' without express or implied warranty.
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char sccsid[] = "@(#)strcasecmp.c 5.5 (Berkeley) 11/24/87";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <ansidecl.h>
|
|
#ifdef __STDC__
|
|
#include <stddef.h>
|
|
#else
|
|
#define size_t unsigned long
|
|
#endif
|
|
|
|
/*
|
|
* This array is designed for mapping upper and lower case letter
|
|
* together for a case independent comparison. The mappings are
|
|
* based upon ascii character sequences.
|
|
*/
|
|
static unsigned char charmap[] = {
|
|
'\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
|
|
'\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
|
|
'\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
|
|
'\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
|
|
'\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
|
|
'\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
|
|
'\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
|
|
'\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
|
|
'\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
|
|
'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
|
|
'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
|
|
'\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
|
|
'\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
|
|
'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
|
|
'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
|
|
'\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
|
|
'\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
|
|
'\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
|
|
'\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
|
|
'\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
|
|
'\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
|
|
'\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
|
|
'\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
|
|
'\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
|
|
'\300', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
|
|
'\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
|
|
'\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
|
|
'\370', '\371', '\372', '\333', '\334', '\335', '\336', '\337',
|
|
'\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
|
|
'\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
|
|
'\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
|
|
'\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
|
|
};
|
|
|
|
int
|
|
strncasecmp(s1, s2, n)
|
|
const char *s1, *s2;
|
|
register size_t n;
|
|
{
|
|
register unsigned char u1, u2;
|
|
|
|
for (; n != 0; --n) {
|
|
u1 = (unsigned char) *s1++;
|
|
u2 = (unsigned char) *s2++;
|
|
if (charmap[u1] != charmap[u2]) {
|
|
return charmap[u1] - charmap[u2];
|
|
}
|
|
if (u1 == '\0') {
|
|
return 0;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|