1 /*- 2 * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua> 3 * at Electronni Visti IA, Kiev, Ukraine. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef lint 29 static const char rcsid[] = 30 "$FreeBSD: src/lib/libc/string/strcoll.c,v 1.11.2.1 2001/07/09 23:30:06 obrien Exp $"; 31 #endif 32 33 #include <stdlib.h> 34 #include <string.h> 35 #include "collate.h" 36 37 int 38 strcoll(s, s2) 39 const char *s, *s2; 40 { 41 int len, len2, prim, prim2, sec, sec2, ret, ret2; 42 const char *t, *t2; 43 char *tt, *tt2; 44 45 if (__collate_load_error) 46 return strcmp(s, s2); 47 48 len = len2 = 1; 49 ret = ret2 = 0; 50 if (__collate_substitute_nontrivial) { 51 t = tt = __collate_substitute(s); 52 t2 = tt2 = __collate_substitute(s2); 53 } else { 54 tt = tt2 = NULL; 55 t = s; 56 t2 = s2; 57 } 58 while(*t && *t2) { 59 prim = prim2 = 0; 60 while(*t && !prim) { 61 __collate_lookup(t, &len, &prim, &sec); 62 t += len; 63 } 64 while(*t2 && !prim2) { 65 __collate_lookup(t2, &len2, &prim2, &sec2); 66 t2 += len2; 67 } 68 if(!prim || !prim2) 69 break; 70 if(prim != prim2) { 71 ret = prim - prim2; 72 goto end; 73 } 74 if(!ret2) 75 ret2 = sec - sec2; 76 } 77 if(!*t && *t2) 78 ret = -(int)((u_char)*t2); 79 else if(*t && !*t2) 80 ret = (u_char)*t; 81 else if(!*t && !*t2) 82 ret = ret2; 83 end: 84 free(tt); 85 free(tt2); 86 87 return ret; 88 } 89