/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2001, 2003 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 <langinfo.h>
#include <limits.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include <runetype.h>
#include <wchar.h>

#include "mblocal.h"
#include "lnumeric.h"
#include "lmessages.h"
#include "lmonetary.h"
#include "../stdtime/timelocal.h"

#define _REL(BASE) ((int)item-BASE)

char *
nl_langinfo_l(nl_item item, locale_t loc)
{
   char *ret, *cs;
   const char *s;
   FIX_LOCALE(loc);

   switch (item) {
        case CODESET:
                s = XLOCALE_CTYPE(loc)->runes->__encoding;
                if (strcmp(s, "EUC-CN") == 0)
                        ret = "eucCN";
                else if (strcmp(s, "EUC-JP") == 0)
                        ret = "eucJP";
                else if (strcmp(s, "EUC-KR") == 0)
                        ret = "eucKR";
                else if (strcmp(s, "EUC-TW") == 0)
                        ret = "eucTW";
                else if (strcmp(s, "BIG5") == 0)
                        ret = "Big5";
                else if (strcmp(s, "MSKanji") == 0)
                        ret = "SJIS";
                else if (strcmp(s, "NONE") == 0)
                        ret = "US-ASCII";
                else if (strncmp(s, "NONE:", 5) == 0)
                        ret = (char *)(s + 5);
                else
                        ret = (char *)s;
                break;
        case D_T_FMT:
                ret = (char *) __get_current_time_locale(loc)->c_fmt;
                break;
        case D_FMT:
                ret = (char *) __get_current_time_locale(loc)->x_fmt;
                break;
        case T_FMT:
                ret = (char *) __get_current_time_locale(loc)->X_fmt;
                break;
        case T_FMT_AMPM:
                ret = (char *) __get_current_time_locale(loc)->ampm_fmt;
                break;
        case AM_STR:
                ret = (char *) __get_current_time_locale(loc)->am;
                break;
        case PM_STR:
                ret = (char *) __get_current_time_locale(loc)->pm;
                break;
        case DAY_1: case DAY_2: case DAY_3:
        case DAY_4: case DAY_5: case DAY_6: case DAY_7:
                ret = (char*) __get_current_time_locale(loc)->weekday[_REL(DAY_1)];
                break;
        case ABDAY_1: case ABDAY_2: case ABDAY_3:
        case ABDAY_4: case ABDAY_5: case ABDAY_6: case ABDAY_7:
                ret = (char*) __get_current_time_locale(loc)->wday[_REL(ABDAY_1)];
                break;
        case MON_1: case MON_2: case MON_3: case MON_4:
        case MON_5: case MON_6: case MON_7: case MON_8:
        case MON_9: case MON_10: case MON_11: case MON_12:
                ret = (char*) __get_current_time_locale(loc)->month[_REL(MON_1)];
                break;
        case ABMON_1: case ABMON_2: case ABMON_3: case ABMON_4:
        case ABMON_5: case ABMON_6: case ABMON_7: case ABMON_8:
        case ABMON_9: case ABMON_10: case ABMON_11: case ABMON_12:
                ret = (char*) __get_current_time_locale(loc)->mon[_REL(ABMON_1)];
                break;
        case ALTMON_1: case ALTMON_2: case ALTMON_3: case ALTMON_4:
        case ALTMON_5: case ALTMON_6: case ALTMON_7: case ALTMON_8:
        case ALTMON_9: case ALTMON_10: case ALTMON_11: case ALTMON_12:
                ret = (char*)
                    __get_current_time_locale(loc)->alt_month[_REL(ALTMON_1)];
                break;
        case ERA:
                /* XXX: need to be implemented  */
                ret = "";
                break;
        case ERA_D_FMT:
                /* XXX: need to be implemented  */
                ret = "";
                break;
        case ERA_D_T_FMT:
                /* XXX: need to be implemented  */
                ret = "";
                break;
        case ERA_T_FMT:
                /* XXX: need to be implemented  */
                ret = "";
                break;
        case ALT_DIGITS:
                /* XXX: need to be implemented  */
                ret = "";
                break;
        case RADIXCHAR:
                ret = (char*) __get_current_numeric_locale(loc)->decimal_point;
                break;
        case THOUSEP:
                ret = (char*) __get_current_numeric_locale(loc)->thousands_sep;
                break;
        case YESEXPR:
                ret = (char*) __get_current_messages_locale(loc)->yesexpr;
                break;
        case NOEXPR:
                ret = (char*) __get_current_messages_locale(loc)->noexpr;
                break;
        /*
         * YESSTR and NOSTR items marked with LEGACY are available, but not
         * recommended by SUSv2 to be used in portable applications since
         * they're subject to remove in future specification editions.
         */
        case YESSTR:            /* LEGACY  */
                ret = (char*) __get_current_messages_locale(loc)->yesstr;
                break;
        case NOSTR:             /* LEGACY  */
                ret = (char*) __get_current_messages_locale(loc)->nostr;
                break;
        /*
         * SUSv2 special formatted currency string 
         */
        case CRNCYSTR:
                ret = "";
                cs = (char*) __get_current_monetary_locale(loc)->currency_symbol;
                if (*cs != '\0') {
                        char pos = localeconv_l(loc)->p_cs_precedes;

                        if (pos == localeconv_l(loc)->n_cs_precedes) {
                                char psn = '\0';

                                if (pos == CHAR_MAX) {
                                        if (strcmp(cs, __get_current_monetary_locale(loc)->mon_decimal_point) == 0)
                                                psn = '.';
                                } else
                                        psn = pos ? '-' : '+';
                                if (psn != '\0') {
                                        int clen = strlen(cs);

                                        if ((loc->csym = reallocf(loc->csym, clen + 2)) != NULL) {
                                                *loc->csym = psn;
                                                strcpy(loc->csym + 1, cs);
                                                ret = loc->csym;
                                        }
                                }
                        }
                }
                break;
        case D_MD_ORDER:        /* FreeBSD local extension */
                ret = (char *) __get_current_time_locale(loc)->md_order;
                break;
        default:
                ret = "";
   }
   return (ret);
}

char *
nl_langinfo(nl_item item)
{
        return nl_langinfo_l(item, __get_locale());
}