1/* 2 * Copyright (c) 1987, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#if defined(LIBC_SCCS) && !defined(lint) 31static char sccsid[] = "@(#)strcasecmp.c 8.1 (Berkeley) 6/4/93"; 32#endif /* LIBC_SCCS and not lint */ 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: src/lib/libc/string/strcasecmp.c,v 1.8 2009/02/03 17:58:20 danger Exp $"); 35 36#include "xlocale_private.h" 37 38#include <strings.h> 39#include <ctype.h> 40 41typedef unsigned char u_char; 42 43int 44strcasecmp_l(s1, s2, loc) 45 const char *s1, *s2; 46 locale_t loc; 47{ 48 const u_char 49 *us1 = (const u_char *)s1, 50 *us2 = (const u_char *)s2; 51 52 NORMALIZE_LOCALE(loc); 53 while (tolower_l(*us1, loc) == tolower_l(*us2++, loc)) 54 if (*us1++ == '\0') 55 return (0); 56 return (tolower_l(*us1, loc) - tolower_l(*--us2, loc)); 57} 58 59int 60strcasecmp(const char *s1, const char *s2) 61{ 62 return strcasecmp_l(s1, s2, __current_locale()); 63} 64 65int 66strncasecmp_l(s1, s2, n, loc) 67 const char *s1, *s2; 68 size_t n; 69 locale_t loc; 70{ 71 NORMALIZE_LOCALE(loc); 72 if (n != 0) { 73 const u_char 74 *us1 = (const u_char *)s1, 75 *us2 = (const u_char *)s2; 76 77 do { 78 if (tolower_l(*us1, loc) != tolower_l(*us2++, loc)) 79 return (tolower_l(*us1, loc) - tolower_l(*--us2, loc)); 80 if (*us1++ == '\0') 81 break; 82 } while (--n != 0); 83 } 84 return (0); 85} 86 87int 88strncasecmp(const char *s1, const char *s2, size_t n) 89{ 90 return strncasecmp_l(s1, s2, n, __current_locale()); 91} 92