2 * Copyright (c) 2002 Tim J. Robbins
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR 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
26 * $FreeBSD: src/lib/libc/string/wcscoll.c,v 1.3 2004/04/07 09:47:56 tjr Exp $
35 static char *__mbsdup(const wchar_t *);
38 * Placeholder implementation of wcscoll(). Attempts to use the single-byte
39 * collation ordering where possible, and falls back on wcscmp() in locales
40 * with extended character sets.
43 wcscoll(const wchar_t *ws1
, const wchar_t *ws2
)
48 if (__collate_load_error
|| MB_CUR_MAX
> 1)
50 * Locale has no special collating order, could not be
51 * loaded, or has an extended character set; do a fast binary
54 return (wcscmp(ws1
, ws2
));
56 if ((mbs1
= __mbsdup(ws1
)) == NULL
|| (mbs2
= __mbsdup(ws2
)) == NULL
) {
58 * Out of memory or illegal wide chars; fall back to wcscmp()
59 * but leave errno indicating the error. Callers that don't
60 * check for error will get a reasonable but often slightly
66 return (wcscmp(ws1
, ws2
));
69 diff
= strcoll(mbs1
, mbs2
);
79 __mbsdup(const wchar_t *ws
)
81 static const mbstate_t initial
;
89 if ((len
= wcsrtombs(NULL
, &wcp
, 0, &st
)) == (size_t)-1)
91 if ((mbs
= malloc(len
+ 1)) == NULL
)
94 wcsrtombs(mbs
, &ws
, len
+ 1, &st
);