diff options
| -rw-r--r-- | strcasecmp.c | 104 |
1 files changed, 14 insertions, 90 deletions
diff --git a/strcasecmp.c b/strcasecmp.c index 24e7afcd..d52bd290 100644 --- a/strcasecmp.c +++ b/strcasecmp.c @@ -1,97 +1,21 @@ -/* - * 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. +/* + * scratch implementation of strcasecmp(), + * in case your C library doesn't have it */ +#include <ctype.h> -#if defined(LIBC_SCCS) && !defined(lint) -static char sccsid[] = "@(#)strcasecmp.c 5.6 (Berkeley) 6/27/88"; -#endif /* LIBC_SCCS and not lint */ - -#if defined(QNX) -#include <sys/types.h> -#else - -#if !defined(u_char) -typedef unsigned char u_char; -#endif - -#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; +strcasecmp(char *s1, char *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]); + while (toupper(*s1) == toupper(*s2++)) + if (*s1++ == '\0') + return(0); + return(toupper(*s1) - toupper(*--s2)); } -strncasecmp(s1, s2, n) - char *s1, *s2; - register int n; +strncasecmp(char *s1, char *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]); + while (--n >= 0 && toupper(*s1) == toupper(*s2++)) + if (toupper(*s1++) == '\0') + return(0); + return(n < 0 ? 0 : toupper(*s1) - toupper(*--s2)); } |