| | 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) |
| | 31 | static 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 | |
| | 41 | typedef unsigned char u_char; |
| | 42 | |
| | 43 | int |
| | 44 | strcasecmp_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 | |
| | 59 | int |
| | 60 | strcasecmp(const char *s1, const char *s2) |
| | 61 | { |
| | 62 | return strcasecmp_l(s1, s2, __current_locale()); |
| | 63 | } |
| | 64 | |
| | 65 | int |
| | 66 | strncasecmp_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 | |
| | 87 | int |
| | 88 | strncasecmp(const char *s1, const char *s2, size_t n) |
| | 89 | { |
| | 90 | return strncasecmp_l(s1, s2, n, __current_locale()); |
| | 91 | } |
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