/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
 * All rights reserved.
 *
 * Copyright (c) 2011 The FreeBSD Foundation
 *
 * 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 <limits.h>
#include <stddef.h>
#include <stdlib.h>

#include "ldpart.h"
#include "lmonetary.h"

extern const char * __fix_locale_grouping_str(const char *);

#define LCMONETARY_SIZE_FULL (sizeof(struct lc_monetary_T) / sizeof(char *))
#define LCMONETARY_SIZE_MIN \
                (offsetof(struct lc_monetary_T, int_p_cs_precedes) / \
                    sizeof(char *))

static char     empty[] = "";
static char     numempty[] = { CHAR_MAX, '\0'};

static const struct lc_monetary_T _C_monetary_locale = {
        empty,          /* int_curr_symbol */
        empty,          /* currency_symbol */
        empty,          /* mon_decimal_point */
        empty,          /* mon_thousands_sep */
        numempty,       /* mon_grouping */
        empty,          /* positive_sign */
        empty,          /* negative_sign */
        numempty,       /* int_frac_digits */
        numempty,       /* frac_digits */
        numempty,       /* p_cs_precedes */
        numempty,       /* p_sep_by_space */
        numempty,       /* n_cs_precedes */
        numempty,       /* n_sep_by_space */
        numempty,       /* p_sign_posn */
        numempty,       /* n_sign_posn */
        numempty,       /* int_p_cs_precedes */
        numempty,       /* int_n_cs_precedes */
        numempty,       /* int_p_sep_by_space */
        numempty,       /* int_n_sep_by_space */
        numempty,       /* int_p_sign_posn */
        numempty        /* int_n_sign_posn */
};

struct xlocale_monetary __xlocale_global_monetary;

static char
cnv(const char *str)
{
        int i = strtol(str, NULL, 10);

        if (i == -1)
                i = CHAR_MAX;
        return ((char)i);
}

static void
destruct_monetary(void *v)
{
        struct xlocale_monetary *l = v;
        if (l->buffer)
                free(l->buffer);
        free(l);
}

static int
monetary_load_locale_l(struct xlocale_monetary *loc, int *using_locale,
    int *changed, const char *name)
{
        int ret;
        struct lc_monetary_T *l = &loc->locale;

        ret = __part_load_locale(name, using_locale,
            &loc->buffer, "LC_MONETARY",
            LCMONETARY_SIZE_FULL, LCMONETARY_SIZE_MIN,
            (const char **)l);
        if (ret == _LDP_LOADED) {
                l->mon_grouping =
                     __fix_locale_grouping_str(l->mon_grouping);

#define M_ASSIGN_CHAR(NAME) (((char *)l->NAME)[0] = \
                             cnv(l->NAME))

                M_ASSIGN_CHAR(int_frac_digits);
                M_ASSIGN_CHAR(frac_digits);
                M_ASSIGN_CHAR(p_cs_precedes);
                M_ASSIGN_CHAR(p_sep_by_space);
                M_ASSIGN_CHAR(n_cs_precedes);
                M_ASSIGN_CHAR(n_sep_by_space);
                M_ASSIGN_CHAR(p_sign_posn);
                M_ASSIGN_CHAR(n_sign_posn);

                /*
                 * The six additional C99 international monetary formatting
                 * parameters default to the national parameters when
                 * reading FreeBSD LC_MONETARY data files.
                 */
#define M_ASSIGN_ICHAR(NAME)                                            \
                do {                                                    \
                        if (l->int_##NAME == NULL)      \
                                l->int_##NAME =         \
                                    l->NAME;            \
                        else                                            \
                                M_ASSIGN_CHAR(int_##NAME);              \
                } while (0)

                M_ASSIGN_ICHAR(p_cs_precedes);
                M_ASSIGN_ICHAR(n_cs_precedes);
                M_ASSIGN_ICHAR(p_sep_by_space);
                M_ASSIGN_ICHAR(n_sep_by_space);
                M_ASSIGN_ICHAR(p_sign_posn);
                M_ASSIGN_ICHAR(n_sign_posn);
        }
        if (ret != _LDP_ERROR)
                atomic_store_rel_int(changed, 1);
        return (ret);
}

int
__monetary_load_locale(const char *name)
{
        return (monetary_load_locale_l(&__xlocale_global_monetary,
            &__xlocale_global_locale.using_monetary_locale,
            &__xlocale_global_locale.monetary_locale_changed, name));
}

void *
__monetary_load(const char *name, locale_t l)
{
        struct xlocale_monetary *new = calloc(sizeof(struct xlocale_monetary),
            1);
        if (new == NULL)
                return (NULL);
        new->header.header.destructor = destruct_monetary;
        if (monetary_load_locale_l(new, &l->using_monetary_locale,
            &l->monetary_locale_changed, name) == _LDP_ERROR) {
                xlocale_release(new);
                return (NULL);
        }
        return (new);
}

struct lc_monetary_T *
__get_current_monetary_locale(locale_t loc)
{
        return (loc->using_monetary_locale ?
            &((struct xlocale_monetary*)loc->components[XLC_MONETARY])->locale :
            (struct lc_monetary_T *)&_C_monetary_locale);
}

#ifdef LOCALE_DEBUG
void
monetdebug(void) {
printf( "int_curr_symbol = %s\n"
        "currency_symbol = %s\n"
        "mon_decimal_point = %s\n"
        "mon_thousands_sep = %s\n"
        "mon_grouping = %s\n"
        "positive_sign = %s\n"
        "negative_sign = %s\n"
        "int_frac_digits = %d\n"
        "frac_digits = %d\n"
        "p_cs_precedes = %d\n"
        "p_sep_by_space = %d\n"
        "n_cs_precedes = %d\n"
        "n_sep_by_space = %d\n"
        "p_sign_posn = %d\n"
        "n_sign_posn = %d\n"
        "int_p_cs_precedes = %d\n"
        "int_p_sep_by_space = %d\n"
        "int_n_cs_precedes = %d\n"
        "int_n_sep_by_space = %d\n"
        "int_p_sign_posn = %d\n"
        "int_n_sign_posn = %d\n",
        _monetary_locale.int_curr_symbol,
        _monetary_locale.currency_symbol,
        _monetary_locale.mon_decimal_point,
        _monetary_locale.mon_thousands_sep,
        _monetary_locale.mon_grouping,
        _monetary_locale.positive_sign,
        _monetary_locale.negative_sign,
        _monetary_locale.int_frac_digits[0],
        _monetary_locale.frac_digits[0],
        _monetary_locale.p_cs_precedes[0],
        _monetary_locale.p_sep_by_space[0],
        _monetary_locale.n_cs_precedes[0],
        _monetary_locale.n_sep_by_space[0],
        _monetary_locale.p_sign_posn[0],
        _monetary_locale.n_sign_posn[0],
        _monetary_locale.int_p_cs_precedes[0],
        _monetary_locale.int_p_sep_by_space[0],
        _monetary_locale.int_n_cs_precedes[0],
        _monetary_locale.int_n_sep_by_space[0],
        _monetary_locale.int_p_sign_posn[0],
        _monetary_locale.int_n_sign_posn[0]
);
}
#endif /* LOCALE_DEBUG */