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/* ****************************************************************************
* locales.c -- localization register.
* Copyright (C) 2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
*
* This file is part of libcarrot.
* libcarrot is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3.0 of the License,
* or (at your option) any later version.
*
* libcarrot is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the libcarrot; if not, see <http://www.gnu.org/licenses/>.
* ************************************************************************* */
#include <locale.h>
#include <limits.h>
#include <string.h>
/* ************************************************************************* */
/* Built-in locales and registry */
/* ************************************************************************* */
/* Default 'C' locale, defined in the C standard. */
static const struct lconv c_locale = {
".", "", "", "", "", "", "", "", "",
CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, "",
CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX, CHAR_MAX
};
/* Main registry. */
static const struct lconv *current_locales[5] = {
&c_locale, /* LC_COLLATE */
&c_locale, /* LC_CTYPE */
&c_locale, /* LC_MONETARY */
&c_locale, /* LC_NUMERIC */
&c_locale /* LC_TIME */
};
/* ************************************************************************* */
/* Main functions */
/* ************************************************************************* */
/**
* setlocale:
* Set the current locale.
*
* @arg category the locale category to edit.
* @arg locale the identifier of the locale to set.
* @return a string if the locale was found, NULL otherwise.
*/
char *setlocale(int category, const char *locale_name)
{
static char opaque[2];
const struct lconv *locale;
/* select the locale */
if (!locale_name[0] || !memcmp(locale_name, "C", 2)) {
memcpy(opaque, "C", 2);
locale = &c_locale;
} else return (NULL);
/* set the locale */
if (!category) {
current_locales[0] = locale;
current_locales[1] = locale;
current_locales[2] = locale;
current_locales[3] = locale;
current_locales[4] = locale;
} else if (category <= 5)
current_locales[category - 1] = locale;
/* return the opaque string */
return (opaque);
}
/**
* localeconv:
* Get the locale numerical conversion thing.
*
* @return the conversion.
*/
struct lconv *localeconv(void)
{
static struct lconv locale;
const struct lconv *num = current_locales[LC_NUMERIC - 1];
const struct lconv *mon = current_locales[LC_MONETARY - 1];
/* nonmonetary things */
locale.decimal_point = num->decimal_point;
locale.thousands_sep = num->thousands_sep;
locale.grouping = num->grouping;
/* monetary things */
locale.mon_decimal_point = mon->mon_decimal_point;
locale.mon_thousands_sep = mon->mon_thousands_sep;
locale.mon_grouping = mon->mon_grouping;
locale.positive_sign = mon->positive_sign;
locale.negative_sign = mon->negative_sign;
locale.currency_symbol = mon->currency_symbol;
locale.frac_digits = mon->frac_digits;
locale.p_cs_precedes = mon->p_cs_precedes;
locale.n_cs_precedes = mon->n_cs_precedes;
locale.p_sep_by_space = mon->p_sep_by_space;
locale.n_sep_by_space = mon->n_sep_by_space;
locale.p_sign_posn = mon->p_sign_posn;
locale.n_sign_posn = mon->n_sign_posn;
locale.int_curr_symbol = mon->int_curr_symbol;
locale.int_frac_digits = mon->int_frac_digits;
locale.int_p_cs_precedes = mon->int_p_cs_precedes;
locale.int_n_cs_precedes = mon->int_n_cs_precedes;
locale.int_p_sep_by_space = mon->int_p_sep_by_space;
locale.int_n_sep_by_space = mon->int_n_sep_by_space;
locale.int_p_sign_posn = mon->int_p_sign_posn;
locale.int_n_sign_posn = mon->int_n_sign_posn;
return (&locale);
}
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