freebsd-dev/lib/libc/locale/lmessages.c
David Chisnall 3c87aa1d3d Implement xlocale APIs from Darwin, mainly for use by libc++. This adds a
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)
2011-11-20 14:45:42 +00:00

127 lines
3.6 KiB
C

/*
* Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
* 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 <stddef.h>
#include "ldpart.h"
#include "lmessages.h"
#define LCMESSAGES_SIZE_FULL (sizeof(struct lc_messages_T) / sizeof(char *))
#define LCMESSAGES_SIZE_MIN \
(offsetof(struct lc_messages_T, yesstr) / sizeof(char *))
struct xlocale_messages {
struct xlocale_component header;
char *buffer;
struct lc_messages_T locale;
};
struct xlocale_messages __xlocale_global_messages;
static char empty[] = "";
static const struct lc_messages_T _C_messages_locale = {
"^[yY]" , /* yesexpr */
"^[nN]" , /* noexpr */
"yes" , /* yesstr */
"no" /* nostr */
};
static void destruct_messages(void *v)
{
struct xlocale_messages *l = v;
if (l->buffer)
free(l->buffer);
free(l);
}
static int
messages_load_locale(struct xlocale_messages *loc, int *using_locale, const char *name)
{
int ret;
struct lc_messages_T *l = &loc->locale;
ret = __part_load_locale(name, using_locale,
&loc->buffer, "LC_MESSAGES",
LCMESSAGES_SIZE_FULL, LCMESSAGES_SIZE_MIN,
(const char **)l);
if (ret == _LDP_LOADED) {
if (l->yesstr == NULL)
l->yesstr = empty;
if (l->nostr == NULL)
l->nostr = empty;
}
return (ret);
}
int
__messages_load_locale(const char *name)
{
return messages_load_locale(&__xlocale_global_messages,
&__xlocale_global_locale.using_messages_locale, name);
}
void *
__messages_load(const char *name, locale_t l)
{
struct xlocale_messages *new = calloc(sizeof(struct xlocale_messages), 1);
new->header.header.destructor = destruct_messages;
if (messages_load_locale(new, &l->using_messages_locale, name) == _LDP_ERROR) {
xlocale_release(new);
return NULL;
}
return new;
}
struct lc_messages_T *
__get_current_messages_locale(locale_t loc)
{
return (loc->using_messages_locale
? &((struct xlocale_messages *)loc->components[XLC_MESSAGES])->locale
: (struct lc_messages_T *)&_C_messages_locale);
}
#ifdef LOCALE_DEBUG
void
msgdebug() {
printf( "yesexpr = %s\n"
"noexpr = %s\n"
"yesstr = %s\n"
"nostr = %s\n",
_messages_locale.yesexpr,
_messages_locale.noexpr,
_messages_locale.yesstr,
_messages_locale.nostr
);
}
#endif /* LOCALE_DEBUG */