xref: /src/lib/libc/locale/localeconv.c

/*	$NetBSD: localeconv.c,v 1.14 2007/05/26 13:14:13 tnozaki Exp $	*/

/*
 * Written by J.T. Conklin <jtc (at) NetBSD.org>.
 * Public domain.
 */

#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: localeconv.c,v 1.14 2007/05/26 13:14:13 tnozaki Exp $");
#endif /* LIBC_SCCS and not lint */

#include <sys/localedef.h>
#include <locale.h>

/*
 * The localeconv() function constructs a struct lconv from the current
 * monetary and numeric locales.
 *
 * Because localeconv() may be called many times (especially by library
 * routines like printf() & strtod()), the appropriate members of the
 * lconv structure are computed only when the monetary or numeric
 * locale has been changed.
 */
int __mlocale_changed = 1;
int __nlocale_changed = 1;

/*
 * Return the current locale conversion.
 */
struct lconv *
localeconv()
{
	static struct lconv ret;

	if (__mlocale_changed) {
		/* LC_MONETARY */
		ret.int_curr_symbol =
		    __UNCONST(_CurrentMonetaryLocale->int_curr_symbol);
		ret.currency_symbol =
		    __UNCONST(_CurrentMonetaryLocale->currency_symbol);
		ret.mon_decimal_point =
		    __UNCONST(_CurrentMonetaryLocale->mon_decimal_point);
		ret.mon_thousands_sep =
		    __UNCONST(_CurrentMonetaryLocale->mon_thousands_sep);
		ret.mon_grouping =
		    __UNCONST(_CurrentMonetaryLocale->mon_grouping);
		ret.positive_sign =
		    __UNCONST(_CurrentMonetaryLocale->positive_sign);
		ret.negative_sign =
		    __UNCONST(_CurrentMonetaryLocale->negative_sign);
		ret.int_frac_digits = _CurrentMonetaryLocale->int_frac_digits;
		ret.frac_digits = _CurrentMonetaryLocale->frac_digits;
		ret.p_cs_precedes = _CurrentMonetaryLocale->p_cs_precedes;
		ret.p_sep_by_space = _CurrentMonetaryLocale->p_sep_by_space;
		ret.n_cs_precedes = _CurrentMonetaryLocale->n_cs_precedes;
		ret.n_sep_by_space = _CurrentMonetaryLocale->n_sep_by_space;
		ret.p_sign_posn = _CurrentMonetaryLocale->p_sign_posn;
		ret.n_sign_posn = _CurrentMonetaryLocale->n_sign_posn;
		ret.int_p_cs_precedes =
		    _CurrentMonetaryLocale->int_p_cs_precedes;
		ret.int_n_cs_precedes =
		    _CurrentMonetaryLocale->int_n_cs_precedes;
		ret.int_p_sep_by_space =
		    _CurrentMonetaryLocale->int_p_sep_by_space;
		ret.int_n_sep_by_space =
		    _CurrentMonetaryLocale->int_n_sep_by_space;
		ret.int_p_sign_posn = _CurrentMonetaryLocale->int_p_sign_posn;
		ret.int_n_sign_posn = _CurrentMonetaryLocale->int_n_sign_posn;
		__mlocale_changed = 0;
	}

	if (__nlocale_changed) {
		/* LC_NUMERIC */
		ret.decimal_point =
		    __UNCONST(_CurrentNumericLocale->decimal_point);
		ret.thousands_sep =
		    __UNCONST(_CurrentNumericLocale->thousands_sep);
		ret.grouping =
		    __UNCONST(_CurrentNumericLocale->grouping);
		__nlocale_changed = 0;
	}

	return (&ret);
}