projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 5b2abdfb A |
1 | /* |
| 2 | * Copyright (C) 1996 by Andrey A. Chernov, Moscow, Russia. | |
| 3 | * 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 | * | |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND | |
| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 24 | * SUCH DAMAGE. | |
| 5b2abdfb A |
25 | */ |
| 26 | ||
| 9385eb3d A |
27 | #include <sys/cdefs.h> |
| 28 | __FBSDID("$FreeBSD: src/lib/libc/locale/collcmp.c,v 1.14 2002/03/22 21:52:18 obrien Exp $"); | |
| 29 | ||
| 5b2abdfb A |
30 | #define ASCII_COMPATIBLE_COLLATE /* see share/colldef */ |
| 31 | ||
| 32 | #include <string.h> | |
| 33 | #include "collate.h" | |
| 34 | #ifndef ASCII_COMPATIBLE_COLLATE | |
| 35 | #include <ctype.h> | |
| 36 | #endif | |
| 37 | ||
| 38 | /* | |
| 39 | * Compare two characters converting collate information | |
| 40 | * into ASCII-compatible range, it allows to handle | |
| 41 | * "[a-z]"-type ranges with national characters. | |
| 42 | */ | |
| 43 | ||
| 44 | int __collate_range_cmp (c1, c2) | |
| 45 | int c1, c2; | |
| 46 | { | |
| 47 | static char s1[2], s2[2]; | |
| 48 | int ret; | |
| 49 | #ifndef ASCII_COMPATIBLE_COLLATE | |
| 50 | int as1, as2, al1, al2; | |
| 51 | #endif | |
| 52 | ||
| 53 | c1 &= UCHAR_MAX; | |
| 54 | c2 &= UCHAR_MAX; | |
| 55 | if (c1 == c2) | |
| 56 | return (0); | |
| 57 | ||
| 58 | #ifndef ASCII_COMPATIBLE_COLLATE | |
| 59 | as1 = isascii(c1); | |
| 60 | as2 = isascii(c2); | |
| 61 | al1 = isalpha(c1); | |
| 62 | al2 = isalpha(c2); | |
| 63 | ||
| 64 | if (as1 || as2 || al1 || al2) { | |
| 65 | if ((as1 && as2) || (!al1 && !al2)) | |
| 66 | return (c1 - c2); | |
| 67 | if (al1 && !al2) { | |
| 68 | if (isupper(c1)) | |
| 69 | return ('A' - c2); | |
| 70 | else | |
| 71 | return ('a' - c2); | |
| 72 | } else if (al2 && !al1) { | |
| 73 | if (isupper(c2)) | |
| 74 | return (c1 - 'A'); | |
| 75 | else | |
| 76 | return (c1 - 'a'); | |
| 77 | } | |
| 78 | } | |
| 79 | #endif | |
| 80 | s1[0] = c1; | |
| 81 | s2[0] = c2; | |
| 82 | if ((ret = strcoll(s1, s2)) != 0) | |
| 83 | return (ret); | |
| 84 | return (c1 - c2); | |
| 85 | } |