95 lines
3.8 KiB
C
95 lines
3.8 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 the above copyright notice and this paragraph are
|
|
* duplicated in all such forms and that any documentation,
|
|
* advertising materials, and other materials related to such
|
|
* distribution and use acknowledge that the software was developed
|
|
* by the University of California, Berkeley. The name of the
|
|
* University may not be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char sccsid[] = "@(#)strcasecmp.c 5.6 (Berkeley) 6/27/88";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/* Some environments don't define u_char -- WZV */
|
|
#if 0
|
|
#include <sys/types.h>
|
|
#else
|
|
typedef unsigned char u_char;
|
|
#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 u_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',
|
|
};
|
|
|
|
strcasecmp(s1, s2)
|
|
char *s1, *s2;
|
|
{
|
|
register u_char *cm = charmap,
|
|
*us1 = (u_char *)s1,
|
|
*us2 = (u_char *)s2;
|
|
|
|
while (cm[*us1] == cm[*us2++])
|
|
if (*us1++ == '\0')
|
|
return(0);
|
|
return(cm[*us1] - cm[*--us2]);
|
|
}
|
|
|
|
strncasecmp(s1, s2, n)
|
|
char *s1, *s2;
|
|
register int n;
|
|
{
|
|
register u_char *cm = charmap,
|
|
*us1 = (u_char *)s1,
|
|
*us2 = (u_char *)s2;
|
|
|
|
while (--n >= 0 && cm[*us1] == cm[*us2++])
|
|
if (*us1++ == '\0')
|
|
return(0);
|
|
return(n < 0 ? 0 : cm[*us1] - cm[*--us2]);
|
|
}
|