1 /* $OpenBSD: wcscasecmp.c,v 1.3 2015/09/12 16:23:14 guenther Exp $ */ 2 3 /* 4 * Copyright (c) 2011 Marc Espie 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 OPENBSD PROJECT AND CONTRIBUTORS 16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 18 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD 19 * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <wchar.h> 29 #include <wctype.h> 30 #include "locale/runetype.h" 31 32 int 33 wcscasecmp(const wchar_t *s1, const wchar_t *s2) 34 { 35 wchar_t l1, l2; 36 37 while ((l1 = towlower(*s1++)) == (l2 = towlower(*s2++))) { 38 if (l1 == 0) 39 return (0); 40 } 41 /* XXX assumes wchar_t = int */ 42 return ((rune_t)l1 - (rune_t)l2); 43 } 44 DEF_WEAK(wcscasecmp); 45 46 int 47 wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n) 48 { 49 wchar_t l1, l2; 50 51 if (n == 0) 52 return (0); 53 do { 54 if (((l1 = towlower(*s1++))) != (l2 = towlower(*s2++))) { 55 /* XXX assumes wchar_t = int */ 56 return ((rune_t)l1 - (rune_t)l2); 57 } 58 if (l1 == 0) 59 break; 60 } while (--n != 0); 61 return (0); 62 } 63 DEF_WEAK(wcsncasecmp); 64