2 * Copyright (c) 2002 Tim J. Robbins
5 * Copyright (c) 2011 The FreeBSD Foundation
7 * Portions of this software were developed by David Chisnall
8 * under sponsorship from the FreeBSD Foundation.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
41 static char *__mbsdup(const wchar_t *);
44 * Placeholder implementation of wcscoll(). Attempts to use the single-byte
45 * collation ordering where possible, and falls back on wcscmp() in locales
46 * with extended character sets.
49 wcscoll_l(const wchar_t *ws1, const wchar_t *ws2, locale_t locale)
54 struct xlocale_collate *table =
55 (struct xlocale_collate*)locale->components[XLC_COLLATE];
57 if (table->__collate_load_error || MB_CUR_MAX > 1)
59 * Locale has no special collating order, could not be
60 * loaded, or has an extended character set; do a fast binary
63 return (wcscmp(ws1, ws2));
65 if ((mbs1 = __mbsdup(ws1)) == NULL || (mbs2 = __mbsdup(ws2)) == NULL) {
67 * Out of memory or illegal wide chars; fall back to wcscmp()
68 * but leave errno indicating the error. Callers that don't
69 * check for error will get a reasonable but often slightly
75 return (wcscmp(ws1, ws2));
78 diff = strcoll_l(mbs1, mbs2, locale);
88 wcscoll(const wchar_t *ws1, const wchar_t *ws2)
90 return wcscoll_l(ws1, ws2, __get_locale());
94 __mbsdup(const wchar_t *ws)
96 static const mbstate_t initial;
104 if ((len = wcsrtombs(NULL, &wcp, 0, &st)) == (size_t)-1)
106 if ((mbs = malloc(len + 1)) == NULL)
109 wcsrtombs(mbs, &ws, len + 1, &st);