/*-
 * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org>
 * Copyright (c) 1997 FreeBSD Inc.
 * 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 <sys/cdefs.h>

#include <stddef.h>

#include "ldpart.h"
#include "timelocal.h"

static struct lc_time_T _time_locale;
static int _time_using_locale;
static char *time_locale_buf;

#define LCTIME_SIZE (sizeof(struct lc_time_T) / sizeof(char *))

static const struct lc_time_T	_C_time_locale = {
	{
		"Jan", "Feb", "Mar", "Apr", "May", "Jun",
		"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
	}, {
		"January", "February", "March", "April", "May", "June",
		"July", "August", "September", "October", "November", "December"
	}, {
		"Sun", "Mon", "Tue", "Wed",
		"Thu", "Fri", "Sat"
	}, {
		"Sunday", "Monday", "Tuesday", "Wednesday",
		"Thursday", "Friday", "Saturday"
	},

	/* X_fmt */
	"%H:%M:%S",

	/*
	 * x_fmt
	 * Since the C language standard calls for
	 * "date, using locale's date format," anything goes.
	 * Using just numbers (as here) makes Quakers happier;
	 * it's also compatible with SVR4.
	 */
	"%m/%d/%y",

	/*
	 * c_fmt
	 */
	"%a %b %e %H:%M:%S %Y",

	/* am pm */
	{ "AM", "PM" },

	/* date_fmt */
	"%a %b %e %H:%M:%S %Z %Y",
	
	/* alt_month
	 * Standalone months forms for %OB
	 */
	{
		"January", "February", "March", "April", "May", "June",
		"July", "August", "September", "October", "November", "December"
	},

	/* md_order
	 * Month / day order in dates
	 */
	"md",

	/* ampm_fmt
	 * To determine 12-hour clock format time (empty, if N/A)
	 */
	"%I:%M:%S %p",

	/* era
	 * Era.  This and the following entries are used if the alternative
	 * date format is specified in strftime
	 */
	"",

	/* era_d_fmt
	 * Era date format used with the %Ex
	 */
	"",

	/* era_d_t_fmt
	 * Era date/time format (%Ec)
	 */
	"",

	/* era_t_fmt
	 * Era time format (%EX)
	 */
	"",

	/* alt_digits
	 * Alternate digits used if %O format prefix is specified
	 */
	""
#ifdef __HAVE_LOCALE_INFO_EXTENDED__
	, "ASCII",	/* codeset */
	{
		L"Jan", L"Feb", L"Mar", L"Apr", L"May", L"Jun",
		L"Jul", L"Aug", L"Sep", L"Oct", L"Nov", L"Dec"
	}, {
		L"January", L"February", L"March", L"April", L"May", L"June",
		L"July", L"August", L"September", L"October", L"November",
		L"December"
	}, {
		L"Sun", L"Mon", L"Tue", L"Wed",
		L"Thu", L"Fri", L"Sat"
	}, {
		L"Sunday", L"Monday", L"Tuesday", L"Wednesday",
		L"Thursday", L"Friday", L"Saturday"
	},
	L"%H:%M:%S",
	L"%m/%d/%y",
	L"%a %b %e %H:%M:%S %Y",
	{ L"AM", L"PM" },
	L"%a %b %e %H:%M:%S %Z %Y",
	L"%I:%M:%S %p",
	L"",
	L"",
	L"",
	L"",
	L""
#endif
};

struct lc_time_T *
__get_current_time_locale(void) {
	return (_time_using_locale
		? &_time_locale
		: (struct lc_time_T *)&_C_time_locale);
}

int
__time_load_locale(const char *name, void *f_wctomb, const char *charset) {

	int	ret;

#ifdef __CYGWIN__
	extern int __set_lc_time_from_win (const char *,
					   const struct lc_time_T *,
					   struct lc_time_T *,
					   char **, void *, const char *);
	int old_time_using_locale = _time_using_locale;
	_time_using_locale = 0;
	ret = __set_lc_time_from_win (name, &_C_time_locale, &_time_locale,
				      &time_locale_buf, f_wctomb, charset);
	/* ret == -1: error, ret == 0: C/POSIX, ret > 0: valid */
	if (ret < 0)
	  _time_using_locale = old_time_using_locale;
	else
	  {
	    _time_using_locale = ret;
	    ret = 0;
	  }
#else
	ret = __part_load_locale(name, &_time_using_locale,
			time_locale_buf, "LC_TIME",
			LCTIME_SIZE, LCTIME_SIZE,
			(const char **)&_time_locale);
#endif
	return (ret);
}