X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=strcasecmp.c;h=d14fdfb382661f4231bf4251479f2404b93f43e5;hb=202c474422229f06d161b2beb1cd416999ea33df;hp=f0a4b3cdda07cf6a79ef91d6d338bdbec70dd83b;hpb=ca3ab12a66fc683cabf546fd405cfbf39ef9fb6f;p=debian%2Fsudo diff --git a/strcasecmp.c b/strcasecmp.c index f0a4b3c..d14fdfb 100644 --- a/strcasecmp.c +++ b/strcasecmp.c @@ -1,112 +1,91 @@ /* - * Copyright (c) 1987, 1993 - * The Regents of the University of California. All rights reserved. + * Copyright (c) 2004-2005 Todd C. Miller * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)strcasecmp.c 8.1 (Berkeley) 6/4/93 + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ -#include "config.h" #include - -#ifndef lint -static const char rcsid[] = "$Sudo: strcasecmp.c,v 1.3 1999/11/05 17:00:00 millert Exp $"; -#endif /* lint */ +#include +#include /* - * 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. + * Case insensitive string compare routines, same semantics as str[n]cmp() + * (assumes ASCII..). + * Derived from a public domain implementation included with the pdksh shell. */ -static const 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', '\301', '\302', '\303', '\304', '\305', '\306', '\307', - '\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317', - '\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327', - '\330', '\331', '\332', '\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', +static const char ichars[256] = { + 0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, + 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, + 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, + 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, + 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, + 0x40, 'a', 'b', 'c', 'd', 'e', 'f', 'g', + 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', + 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', + 'x', 'y', 'z', 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, + 0x60, 'a', 'b', 'c', 'd', 'e', 'f', 'g', + 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', + 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', + 'x', 'y', 'z', 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, + 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, + 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, + 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, + 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, + 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, + 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, + 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, + 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, + 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, + 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, + 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, + 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, + 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, + 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, + 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, + 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff }; int strcasecmp(s1, s2) - const char *s1, *s2; + const char *s1; + const char *s2; { - const unsigned char *cm = charmap, - *us1 = (const unsigned char *)s1, - *us2 = (const unsigned char *)s2; + const unsigned char *us1 = (const unsigned char *) s1; + const unsigned char *us2 = (const unsigned char *) s2; - while (cm[*us1] == cm[*us2++]) + while (ichars[*us1] == ichars[*us2++]) { if (*us1++ == '\0') - return (0); - return (cm[*us1] - cm[*--us2]); + return 0; + } + return ichars[*us1] - ichars[*--us2]; } int strncasecmp(s1, s2, n) - const char *s1, *s2; + 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; - if (n != 0) { - const unsigned char *cm = charmap, - *us1 = (const unsigned char *)s1, - *us2 = (const unsigned char *)s2; - - do { - if (cm[*us1] != cm[*us2++]) - return (cm[*us1] - cm[*--us2]); - if (*us1++ == '\0') - break; - } while (--n != 0); + while (n != 0 && ichars[*us1] == ichars[*us2++]) { + if (*us1++ == '\0') + return 0; + n--; } - return (0); + return n ? ichars[*us1] - ichars[*--us2] : 0; }