collcmp.c revision 62758
117530Sache/* 217530Sache * Copyright (C) 1996 by Andrey A. Chernov, Moscow, Russia. 317530Sache * All rights reserved. 417530Sache * 517530Sache * Redistribution and use in source and binary forms, with or without 617530Sache * modification, are permitted provided that the following conditions 717530Sache * are met: 817530Sache * 1. Redistributions of source code must retain the above copyright 917530Sache * notice, this list of conditions and the following disclaimer. 1017530Sache * 2. Redistributions in binary form must reproduce the above copyright 1117530Sache * notice, this list of conditions and the following disclaimer in the 1217530Sache * documentation and/or other materials provided with the distribution. 1317530Sache * 1417530Sache * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 1517530Sache * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1617530Sache * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1717530Sache * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 1817530Sache * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1917530Sache * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2017530Sache * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2117530Sache * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2217530Sache * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2317530Sache * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2417530Sache * SUCH DAMAGE. 2517599Sache * 2650476Speter * $FreeBSD: head/lib/libc/locale/collcmp.c 62758 2000-07-07 08:24:50Z ache $ 2717530Sache */ 2817530Sache 2962758Sache#define ASCII_COMPATIBLE_COLLATE /* see share/colldef */ 3019129Sache 3117530Sache#include <string.h> 3219275Sache#include "collate.h" 3319129Sache#ifndef ASCII_COMPATIBLE_COLLATE 3419129Sache#include <ctype.h> 3519129Sache#endif 3617551Sache 3718331Sache/* 3818331Sache * Compare two characters converting collate information 3918331Sache * into ASCII-compatible range, it allows to handle 4018331Sache * "[a-z]"-type ranges with national characters. 4118331Sache */ 4218331Sache 4319275Sacheint __collate_range_cmp (c1, c2) 4417551Sache int c1, c2; 4517551Sache{ 4617530Sache static char s1[2], s2[2]; 4719129Sache int ret; 4819129Sache#ifndef ASCII_COMPATIBLE_COLLATE 4919129Sache int as1, as2, al1, al2; 5019129Sache#endif 5117530Sache 5217551Sache c1 &= UCHAR_MAX; 5317551Sache c2 &= UCHAR_MAX; 5417530Sache if (c1 == c2) 5517530Sache return (0); 5617576Sache 5719129Sache#ifndef ASCII_COMPATIBLE_COLLATE 5817576Sache as1 = isascii(c1); 5917576Sache as2 = isascii(c2); 6017576Sache al1 = isalpha(c1); 6117576Sache al2 = isalpha(c2); 6217576Sache 6317576Sache if (as1 || as2 || al1 || al2) { 6417576Sache if ((as1 && as2) || (!al1 && !al2)) 6517576Sache return (c1 - c2); 6617576Sache if (al1 && !al2) { 6717576Sache if (isupper(c1)) 6817576Sache return ('A' - c2); 6917576Sache else 7017576Sache return ('a' - c2); 7117576Sache } else if (al2 && !al1) { 7217576Sache if (isupper(c2)) 7317576Sache return (c1 - 'A'); 7417576Sache else 7517576Sache return (c1 - 'a'); 7617576Sache } 7717530Sache } 7819129Sache#endif 7917551Sache s1[0] = c1; 8017551Sache s2[0] = c2; 8118331Sache if ((ret = strcoll(s1, s2)) != 0) 8218331Sache return (ret); 8318331Sache return (c1 - c2); 8417530Sache} 85