1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright 2013 Garrett D'Amore <garrett@damore.org> 25 * Copyright 2016 Joyent, Inc. 26 */ 27 28 /* 29 * Compare strings ignoring case difference. 30 * returns: s1>s2: >0 s1==s2: 0 s1<s2: <0 31 * All letters are converted to the lowercase and compared. 32 */ 33 34 #include "lint.h" 35 #include <stdlib.h> 36 #include <wchar.h> 37 #include <locale.h> 38 #include "libc.h" 39 40 /* Legacy Sun interfaces */ 41 #pragma weak wscasecmp = wcscasecmp 42 #pragma weak wsncasecmp = wcsncasecmp 43 44 int 45 wcscasecmp_l(const wchar_t *s1, const wchar_t *s2, locale_t loc) 46 { 47 if (s1 == s2) 48 return (0); 49 50 while (towlower_l(*s1, loc) == towlower_l(*s2, loc)) { 51 if (*s1 == 0) 52 return (0); 53 s1++; 54 s2++; 55 } 56 return (towlower_l(*s1, loc) - towlower_l(*s2, loc)); 57 } 58 59 int 60 wcscasecmp(const wchar_t *s1, const wchar_t *s2) 61 { 62 return (wcscasecmp_l(s1, s2, uselocale(NULL))); 63 } 64 65 int 66 wcsncasecmp_l(const wchar_t *s1, const wchar_t *s2, size_t n, locale_t loc) 67 { 68 if (s1 == s2 || n == 0) 69 return (0); 70 71 while ((towlower_l(*s1, loc) == towlower_l(*s2, loc)) && --n) { 72 if (*s1 == 0) 73 return (0); 74 s1++; 75 s2++; 76 } 77 return (towlower_l(*s1, loc) - towlower_l(*s2, loc)); 78 } 79 80 int 81 wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n) 82 { 83 return (wcsncasecmp_l(s1, s2, n, uselocale(NULL))); 84 } 85