1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1987, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Copyright (c) 2011 The FreeBSD Foundation 8 * 9 * Portions of this software were developed by David Chisnall 10 * under sponsorship from the FreeBSD Foundation. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <strings.h> 38 #include <ctype.h> 39 #include "xlocale_private.h" 40 41 int 42 strcasecmp_l(const char *s1, const char *s2, locale_t locale) 43 { 44 const u_char 45 *us1 = (const u_char *)s1, 46 *us2 = (const u_char *)s2; 47 FIX_LOCALE(locale); 48 49 while (tolower_l(*us1, locale) == tolower_l(*us2++, locale)) 50 if (*us1++ == '\0') 51 return (0); 52 return (tolower_l(*us1, locale) - tolower_l(*--us2, locale)); 53 } 54 int 55 strcasecmp(const char *s1, const char *s2) 56 { 57 return strcasecmp_l(s1, s2, __get_locale()); 58 } 59 60 int 61 strncasecmp_l(const char *s1, const char *s2, size_t n, locale_t locale) 62 { 63 FIX_LOCALE(locale); 64 if (n != 0) { 65 const u_char 66 *us1 = (const u_char *)s1, 67 *us2 = (const u_char *)s2; 68 69 do { 70 if (tolower_l(*us1, locale) != tolower_l(*us2++, locale)) 71 return (tolower_l(*us1, locale) - tolower_l(*--us2, locale)); 72 if (*us1++ == '\0') 73 break; 74 } while (--n != 0); 75 } 76 return (0); 77 } 78 79 int 80 strncasecmp(const char *s1, const char *s2, size_t n) 81 { 82 return strncasecmp_l(s1, s2, n, __get_locale()); 83 } 84