1 /* 2 * Copyright (c) 1987, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Copyright (c) 2011 The FreeBSD Foundation 6 * All rights reserved. 7 * Portions of this software were developed by David Chisnall 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)strcasecmp.c 8.1 (Berkeley) 6/4/93 35 * $FreeBSD: head/lib/libc/string/strcasecmp.c 251069 2013-05-28 20:57:40Z emaste $ 36 */ 37 38 #include <strings.h> 39 #include <ctype.h> 40 #include "xlocale_private.h" 41 42 int 43 strcasecmp_l(const char *s1, const char *s2, locale_t locale) 44 { 45 const u_char 46 *us1 = (const u_char *)s1, 47 *us2 = (const u_char *)s2; 48 FIX_LOCALE(locale); 49 50 while (tolower_l(*us1, locale) == tolower_l(*us2++, locale)) 51 if (*us1++ == '\0') 52 return (0); 53 return (tolower_l(*us1, locale) - tolower_l(*--us2, locale)); 54 } 55 int 56 strcasecmp(const char *s1, const char *s2) 57 { 58 return strcasecmp_l(s1, s2, __get_locale()); 59 } 60 61 int 62 strncasecmp_l(const char *s1, const char *s2, size_t n, locale_t locale) 63 { 64 FIX_LOCALE(locale); 65 if (n != 0) { 66 const u_char 67 *us1 = (const u_char *)s1, 68 *us2 = (const u_char *)s2; 69 70 do { 71 if (tolower_l(*us1, locale) != tolower_l(*us2++, locale)) 72 return (tolower_l(*us1, locale) - tolower_l(*--us2, locale)); 73 if (*us1++ == '\0') 74 break; 75 } while (--n != 0); 76 } 77 return (0); 78 } 79 80 int 81 strncasecmp(const char *s1, const char *s2, size_t n) 82 { 83 return strncasecmp_l(s1, s2, n, __get_locale()); 84 } 85