minix/lib/libc/locale/setlocale.c

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/* $NetBSD: setlocale.c,v 1.58 2010/06/07 13:52:30 tnozaki Exp $ */
/*-
* Copyright (c)2008 Citrus Project,
* All rights reserved.
*
* 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>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: setlocale.c,v 1.58 2010/06/07 13:52:30 tnozaki Exp $");
#endif /* LIBC_SCCS and not lint */
#include <sys/types.h>
#include <locale.h>
#include <limits.h>
#include <paths.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "setlocale_local.h"
const char *_PathLocale = NULL;
__link_set_decl(all_categories, _locale_category_t);
extern const _locale_category_t _generic_LC_ALL_desc;
extern const _locale_category_t _dummy_LC_COLLATE_desc;
#ifdef WITH_RUNE
extern const _locale_category_t _citrus_LC_CTYPE_desc;
extern const _locale_category_t _citrus_LC_MONETARY_desc;
extern const _locale_category_t _citrus_LC_NUMERIC_desc;
extern const _locale_category_t _citrus_LC_TIME_desc;
extern const _locale_category_t _citrus_LC_MESSAGES_desc;
#else
extern const _locale_category_t _localeio_LC_CTYPE_desc;
extern const _locale_category_t _localeio_LC_MONETARY_desc;
extern const _locale_category_t _localeio_LC_NUMERIC_desc;
extern const _locale_category_t _localeio_LC_TIME_desc;
extern const _locale_category_t _localeio_LC_MESSAGES_desc;
#endif
#ifdef __minix
/* GNU binutils 2.x a.out support is rotten and link sets are not
supported. Workaround this by explicitely creating the structure
the linker was supposed to create. */
struct {
int __ls_length;
_locale_category_t *__ls_items[7];
} __link_set_all_categories = {
.__ls_length = 7,
.__ls_items = {
[0] = __UNCONST(&_generic_LC_ALL_desc),
[1] = __UNCONST(&_dummy_LC_COLLATE_desc),
#ifdef WITH_RUNE
[2] = __UNCONST(&_citrus_LC_CTYPE_desc),
[3] = __UNCONST(&_citrus_LC_MONETARY_desc),
[4] = __UNCONST(&_citrus_LC_NUMERIC_desc),
[5] = __UNCONST(&_citrus_LC_TIME_desc),
[6] = __UNCONST(&_citrus_LC_MESSAGES_desc),
#else
[2] = __UNCONST(&_localeio_LC_CTYPE_desc),
[3] = __UNCONST(&_localeio_LC_MONETARY_desc),
[4] = __UNCONST(&_localeio_LC_NUMERIC_desc),
[5] = __UNCONST(&_localeio_LC_TIME_desc),
[6] = __UNCONST(&_localeio_LC_MESSAGES_desc),
#endif
},
};
#endif /* __minix */
__link_set_add_data(all_categories, _generic_LC_ALL_desc);
__link_set_add_data(all_categories, _dummy_LC_COLLATE_desc);
#ifdef WITH_RUNE
__link_set_add_data(all_categories, _citrus_LC_CTYPE_desc);
__link_set_add_data(all_categories, _citrus_LC_MONETARY_desc);
__link_set_add_data(all_categories, _citrus_LC_NUMERIC_desc);
__link_set_add_data(all_categories, _citrus_LC_TIME_desc);
__link_set_add_data(all_categories, _citrus_LC_MESSAGES_desc);
#else
__link_set_add_data(all_categories, _localeio_LC_CTYPE_desc);
__link_set_add_data(all_categories, _localeio_LC_MONETARY_desc);
__link_set_add_data(all_categories, _localeio_LC_NUMERIC_desc);
__link_set_add_data(all_categories, _localeio_LC_TIME_desc);
__link_set_add_data(all_categories, _localeio_LC_MESSAGES_desc);
#endif
_locale_category_t *
_find_category(int category)
{
_locale_category_t * const *p;
__link_set_foreach(p, all_categories) {
if ((*p)->category == category)
return *p;
}
return NULL;
}
const char *
_get_locale_env(const char *category)
{
const char *name;
/* 1. check LC_ALL */
name = (const char *)getenv("LC_ALL");
if (name == NULL || *name == '\0') {
/* 2. check LC_* */
name = (const char *)getenv(category);
if (name == NULL || *name == '\0') {
/* 3. check LANG */
name = getenv("LANG");
}
}
if (name == NULL || *name == '\0' || strchr(name, '/'))
/* 4. if none is set, fall to "C" */
name = _C_LOCALE;
return name;
}
char *
__setlocale(int category, const char *name)
{
_locale_category_t *l;
struct _locale_impl_t *impl;
if (category >= LC_ALL && category < _LC_LAST) {
l = _find_category(category);
if (l != NULL) {
if (issetugid() || ((_PathLocale == NULL &&
(_PathLocale = getenv("PATH_LOCALE")) == NULL) ||
*_PathLocale == '\0'))
_PathLocale = _PATH_LOCALE;
impl = *_current_locale();
return __UNCONST((*l->setlocale)(name, impl));
}
}
return NULL;
}
char *
setlocale(int category, const char *locale)
{
/* locale may be NULL */
__mb_len_max_runtime = MB_LEN_MAX;
return __setlocale(category, locale);
}