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 2013 Garrett D'Amore <garrett@damore.org> 24 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. 25 */ 26 27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * Portions of this source code were derived from Berkeley 4.3 BSD 32 * under license from the Regents of the University of California. 33 */ 34 35 #include "lint.h" 36 #include <sys/types.h> 37 #include <strings.h> 38 #include <ctype.h> 39 #include <locale.h> 40 #include "lctype.h" 41 #include "localeimpl.h" 42 43 int 44 strncasecmp_l(const char *s1, const char *s2, size_t n, locale_t loc) 45 { 46 extern int ascii_strncasecmp(const char *s1, const char *s2, size_t n); 47 const int *cm; 48 const uchar_t *us1; 49 const uchar_t *us2; 50 const struct lc_ctype *lct = loc->ctype; 51 52 /* 53 * If we are in a locale that uses the ASCII character set 54 * (C or POSIX), use the fast ascii_strncasecmp() function. 55 */ 56 if (lct->lc_is_ascii) 57 return (ascii_strncasecmp(s1, s2, n)); 58 59 cm = lct->lc_trans_lower; 60 us1 = (const uchar_t *)s1; 61 us2 = (const uchar_t *)s2; 62 63 while (n != 0 && cm[*us1] == cm[*us2++]) { 64 if (*us1++ == '\0') 65 return (0); 66 n--; 67 } 68 return (n == 0 ? 0 : cm[*us1] - cm[*(us2 - 1)]); 69 } 70 71 int 72 strncasecmp(const char *s1, const char *s2, size_t n) 73 { 74 return (strncasecmp_l(s1, s2, n, uselocale(NULL))); 75 } 76