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)
130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
/*-
|
|
* Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
|
|
* at Electronni Visti IA, Kiev, Ukraine.
|
|
* 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 ``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 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>
|
|
#if 0
|
|
__FBSDID("FreeBSD: src/lib/libc/string/strxfrm.c,v 1.15 2002/09/06 11:24:06 tjr Exp ");
|
|
#endif
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
#include "collate.h"
|
|
|
|
static char *__mbsdup(const wchar_t *);
|
|
|
|
/*
|
|
* Placeholder wcsxfrm() implementation. See wcscoll.c for a description of
|
|
* the logic used.
|
|
*/
|
|
size_t
|
|
wcsxfrm_l(wchar_t * __restrict dest, const wchar_t * __restrict src, size_t len, locale_t locale)
|
|
{
|
|
int prim, sec, l;
|
|
size_t slen;
|
|
char *mbsrc, *s, *ss;
|
|
FIX_LOCALE(locale);
|
|
struct xlocale_collate *table =
|
|
(struct xlocale_collate*)locale->components[XLC_COLLATE];
|
|
|
|
if (*src == L'\0') {
|
|
if (len != 0)
|
|
*dest = L'\0';
|
|
return (0);
|
|
}
|
|
|
|
if (table->__collate_load_error || MB_CUR_MAX > 1) {
|
|
slen = wcslen(src);
|
|
if (len > 0) {
|
|
if (slen < len)
|
|
wcscpy(dest, src);
|
|
else {
|
|
wcsncpy(dest, src, len - 1);
|
|
dest[len - 1] = L'\0';
|
|
}
|
|
}
|
|
return (slen);
|
|
}
|
|
|
|
mbsrc = __mbsdup(src);
|
|
slen = 0;
|
|
prim = sec = 0;
|
|
ss = s = __collate_substitute(table, mbsrc);
|
|
while (*s != '\0') {
|
|
while (*s != '\0' && prim == 0) {
|
|
__collate_lookup(table, s, &l, &prim, &sec);
|
|
s += l;
|
|
}
|
|
if (prim != 0) {
|
|
if (len > 1) {
|
|
*dest++ = (wchar_t)prim;
|
|
len--;
|
|
}
|
|
slen++;
|
|
prim = 0;
|
|
}
|
|
}
|
|
free(ss);
|
|
free(mbsrc);
|
|
if (len != 0)
|
|
*dest = L'\0';
|
|
|
|
return (slen);
|
|
}
|
|
size_t
|
|
wcsxfrm(wchar_t * __restrict dest, const wchar_t * __restrict src, size_t len)
|
|
{
|
|
return wcsxfrm_l(dest, src, len, __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);
|
|
}
|