mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
3c87aa1d3d
load of _l suffixed versions of various standard library functions that use the global locale, making them take an explicit locale parameter. Also adds support for per-thread locales. This work was funded by the FreeBSD Foundation. Please test any code you have that uses the C standard locale functions! Reviewed by: das (gdtoa changes) Approved by: dim (mentor)
113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
/*-
|
|
* Copyright (c) 2002 Tim J. Robbins
|
|
* All rights reserved.
|
|
*
|
|
* Copyright (c) 2011 The FreeBSD Foundation
|
|
* All rights reserved.
|
|
* Portions of this software were developed by David Chisnall
|
|
* under sponsorship from the FreeBSD Foundation.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
#include "collate.h"
|
|
|
|
static char *__mbsdup(const wchar_t *);
|
|
|
|
/*
|
|
* Placeholder implementation of wcscoll(). Attempts to use the single-byte
|
|
* collation ordering where possible, and falls back on wcscmp() in locales
|
|
* with extended character sets.
|
|
*/
|
|
int
|
|
wcscoll_l(const wchar_t *ws1, const wchar_t *ws2, locale_t locale)
|
|
{
|
|
char *mbs1, *mbs2;
|
|
int diff, sverrno;
|
|
FIX_LOCALE(locale);
|
|
struct xlocale_collate *table =
|
|
(struct xlocale_collate*)locale->components[XLC_COLLATE];
|
|
|
|
if (table->__collate_load_error || MB_CUR_MAX > 1)
|
|
/*
|
|
* Locale has no special collating order, could not be
|
|
* loaded, or has an extended character set; do a fast binary
|
|
* comparison.
|
|
*/
|
|
return (wcscmp(ws1, ws2));
|
|
|
|
if ((mbs1 = __mbsdup(ws1)) == NULL || (mbs2 = __mbsdup(ws2)) == NULL) {
|
|
/*
|
|
* Out of memory or illegal wide chars; fall back to wcscmp()
|
|
* but leave errno indicating the error. Callers that don't
|
|
* check for error will get a reasonable but often slightly
|
|
* incorrect result.
|
|
*/
|
|
sverrno = errno;
|
|
free(mbs1);
|
|
errno = sverrno;
|
|
return (wcscmp(ws1, ws2));
|
|
}
|
|
|
|
diff = strcoll_l(mbs1, mbs2, locale);
|
|
sverrno = errno;
|
|
free(mbs1);
|
|
free(mbs2);
|
|
errno = sverrno;
|
|
|
|
return (diff);
|
|
}
|
|
|
|
int
|
|
wcscoll(const wchar_t *ws1, const wchar_t *ws2)
|
|
{
|
|
return wcscoll_l(ws1, ws2, __get_locale());
|
|
}
|
|
|
|
static char *
|
|
__mbsdup(const wchar_t *ws)
|
|
{
|
|
static const mbstate_t initial;
|
|
mbstate_t st;
|
|
const wchar_t *wcp;
|
|
size_t len;
|
|
char *mbs;
|
|
|
|
wcp = ws;
|
|
st = initial;
|
|
if ((len = wcsrtombs(NULL, &wcp, 0, &st)) == (size_t)-1)
|
|
return (NULL);
|
|
if ((mbs = malloc(len + 1)) == NULL)
|
|
return (NULL);
|
|
st = initial;
|
|
wcsrtombs(mbs, &ws, len + 1, &st);
|
|
|
|
return (mbs);
|
|
}
|