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 /* 29 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 30 * Use is subject to license terms. 31 */ 32 33 #include "lint.h" 34 #include <stdlib.h> 35 #include <string.h> 36 #include <errno.h> 37 #include "collate.h" 38 39 int 40 strcoll(const char *s, const char *s2) 41 { 42 int len, len2, prim, prim2, sec, sec2, ret, ret2; 43 const char *t, *t2; 44 char *tt, *tt2; 45 46 if (__collate_load_error) 47 return (strcmp(s, s2)); 48 49 len = len2 = 1; 50 ret = ret2 = 0; 51 if (__collate_substitute_nontrivial) { 52 t = tt = __collate_substitute(s); 53 t2 = tt2 = __collate_substitute(s2); 54 if ((tt == NULL) || (tt2 == NULL)) { 55 errno = ENOMEM; 56 if (tt) 57 free(tt); 58 if (tt2) 59 free(tt2); 60 /* 61 * All we can do here is set errno, the application 62 * is obliged to check it. 63 */ 64 return (strcmp(s, s2)); 65 } 66 } else { 67 tt = tt2 = NULL; 68 t = s; 69 t2 = s2; 70 } 71 while (*t && *t2) { 72 prim = prim2 = 0; 73 while (*t && !prim) { 74 __collate_lookup(t, &len, &prim, &sec); 75 t += len; 76 } 77 while (*t2 && !prim2) { 78 __collate_lookup(t2, &len2, &prim2, &sec2); 79 t2 += len2; 80 } 81 if (!prim || !prim2) 82 break; 83 if (prim != prim2) { 84 ret = prim - prim2; 85 goto end; 86 } 87 if (!ret2) 88 ret2 = sec - sec2; 89 } 90 if (!*t && *t2) 91 ret = -(int)((uchar_t)*t2); 92 else if (*t && !*t2) 93 ret = (uchar_t)*t; 94 else if (!*t && !*t2) 95 ret = ret2; 96 end: 97 free(tt); 98 free(tt2); 99 100 return (ret); 101 } 102