port/locale/lmonetary.c

	lmonetary.c revision 6b5e5868e7ebf1aff3a5abd7d0c4ef0e5fbf3648
/*
 * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
 * Copyright (c) 2000, 2001 Alexey Zelkin <phantom@FreeBSD.org>
 * 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 "lint.h"
#include <limits.h>
#include <stddef.h>
#include <stdlib.h>
#include "ldpart.h"
#include "lmonetary.h"

extern int __mlocale_changed;
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 */
};

static struct lc_monetary_T _monetary_locale;
static int  _monetary_using_locale;
static char *_monetary_locale_buf;

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

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

int
__monetary_load_locale(const char *name)
{
    int ret;

    ret = __part_load_locale(name, &_monetary_using_locale,
        &_monetary_locale_buf, "LC_MONETARY",
        LCMONETARY_SIZE_FULL, LCMONETARY_SIZE_MIN,
        (const char **)&_monetary_locale);
    if (ret != _LDP_ERROR)
        __mlocale_changed = 1;
    if (ret == _LDP_LOADED) {
        _monetary_locale.mon_grouping =
            __fix_locale_grouping_str(_monetary_locale.mon_grouping);

#define M_ASSIGN_CHAR(NAME) \
        (((char *)_monetary_locale.NAME)[0] = \
            cnv(_monetary_locale.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)                    \
        if (_monetary_locale.int_##NAME == NULL)    \
            _monetary_locale.int_##NAME =       \
                _monetary_locale.NAME;      \
        else                        \
            M_ASSIGN_CHAR(int_##NAME);

        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);
    }
    return (ret);
}

struct lc_monetary_T *
__get_current_monetary_locale(void)
{
    return (_monetary_using_locale ? &_monetary_locale :
        (struct lc_monetary_T *)&_C_monetary_locale);
}