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/*
* Copyright (c) 1997, 1998 Motoyuki Kasahara
*
* This programs is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
/*
* This program requires the following Autoconf macros:
* AC_C_CONST
* AC_TYPE_SIZE_T
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#else
/* Define to empty if the keyword `const' does not work. */
/* #define const */
/* Define if `size_t' is not defined. */
/* #define size_t unsigned */
#endif /* not HAVE_CONFIG_H */
/*
* Character comparison table used in strcasecmp() and strncasecmp().
*/
static const unsigned char cmp_table[] = {
/* 0x00 -- 0x0f */
'\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
'\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
/* 0x10 -- 0x1f */
'\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
'\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
/* 0x20 -- 0x2f */
'\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
'\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
/* 0x30 -- 0x3f */
'\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
'\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
/* 0x40 -- 0x4f */
'\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
/* 0x50 -- 0x5f */
'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
'\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
/* 0x60 -- 0x6f */
'\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
/* 0x70 -- 0x7f */
'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
'\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
/* 0x80 -- 0x8f */
'\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
'\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
/* 0x90 -- 0x9f */
'\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
'\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
/* 0xa0 -- 0xaf */
'\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
'\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
/* 0xb0 -- 0xbf */
'\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
'\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
/* 0xc0 -- 0xcf */
'\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
'\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
/* 0xd0 -- 0xdf */
'\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
'\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
/* 0xe0 -- 0xef */
'\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
'\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
/* 0xf0 -- 0xff */
'\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
'\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
};
/*
* Compare strings.
* Cases in the strings are insensitive.
*/
int
strcasecmp(s1, s2)
const char *s1;
const char *s2;
{
const unsigned char *us1 = (const unsigned char *)s1;
const unsigned char *us2 = (const unsigned char *)s2;
int cmp;
while (*us1 != '\0') {
cmp = (int)(cmp_table[(int)(*us1++)] - cmp_table[(int)(*us2++)]);
if (cmp != 0)
return cmp;
}
return -(int)(cmp_table[(int)(*us2)]);
}
/*
* Compare strings within `n' characters.
* Cases in the strings are insensitive.
*/
int
strncasecmp(s1, s2, n)
const char *s1;
const char *s2;
size_t n;
{
const unsigned char *us1 = (const unsigned char *)s1;
const unsigned char *us2 = (const unsigned char *)s2;
size_t i = n;
int cmp;
while (*us1 != '\0') {
if (i-- <= 0)
return 0;
cmp = (int)(cmp_table[(int)(*us1++)] - cmp_table[(int)(*us2++)]);
if (cmp != 0)
return cmp;
}
return -(int)(cmp_table[(int)(*s2)]);
}
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