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)
128 lines
3.7 KiB
C
128 lines
3.7 KiB
C
/*
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* Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
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* All rights reserved.
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*
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* Copyright (c) 2011 The FreeBSD Foundation
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* All rights reserved.
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* Portions of this software were developed by David Chisnall
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <limits.h>
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#include "ldpart.h"
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#include "lnumeric.h"
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extern const char *__fix_locale_grouping_str(const char *);
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#define LCNUMERIC_SIZE (sizeof(struct lc_numeric_T) / sizeof(char *))
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static char numempty[] = { CHAR_MAX, '\0' };
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static const struct lc_numeric_T _C_numeric_locale = {
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".", /* decimal_point */
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"", /* thousands_sep */
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numempty /* grouping */
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};
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static void
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destruct_numeric(void *v)
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{
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struct xlocale_numeric *l = v;
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if (l->buffer)
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free(l->buffer);
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free(l);
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}
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struct xlocale_numeric __xlocale_global_numeric;
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static int
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numeric_load_locale(struct xlocale_numeric *loc, int *using_locale, int *changed,
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const char *name)
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{
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int ret;
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struct lc_numeric_T *l = &loc->locale;
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ret = __part_load_locale(name, using_locale,
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&loc->buffer, "LC_NUMERIC",
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LCNUMERIC_SIZE, LCNUMERIC_SIZE,
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(const char**)l);
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if (ret != _LDP_ERROR)
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*changed= 1;
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if (ret == _LDP_LOADED) {
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/* Can't be empty according to C99 */
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if (*l->decimal_point == '\0')
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l->decimal_point =
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_C_numeric_locale.decimal_point;
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l->grouping =
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__fix_locale_grouping_str(l->grouping);
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}
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return (ret);
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}
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int
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__numeric_load_locale(const char *name)
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{
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return numeric_load_locale(&__xlocale_global_numeric,
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&__xlocale_global_locale.using_numeric_locale,
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&__xlocale_global_locale.numeric_locale_changed, name);
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}
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void *
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__numeric_load(const char *name, locale_t l)
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{
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struct xlocale_numeric *new = calloc(sizeof(struct xlocale_numeric), 1);
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new->header.header.destructor = destruct_numeric;
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if (numeric_load_locale(new, &l->using_numeric_locale,
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&l->numeric_locale_changed, name) == _LDP_ERROR)
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{
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xlocale_release(new);
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return NULL;
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}
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return new;
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}
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struct lc_numeric_T *
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__get_current_numeric_locale(locale_t loc)
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{
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return (loc->using_numeric_locale
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? &((struct xlocale_numeric *)loc->components[XLC_NUMERIC])->locale
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: (struct lc_numeric_T *)&_C_numeric_locale);
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}
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#ifdef LOCALE_DEBUG
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void
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numericdebug(void) {
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printf( "decimal_point = %s\n"
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"thousands_sep = %s\n"
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"grouping = %s\n",
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_numeric_locale.decimal_point,
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_numeric_locale.thousands_sep,
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_numeric_locale.grouping
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);
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}
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#endif /* LOCALE_DEBUG */
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