xref: /webtrees/app/Date/RomanDate.php (revision 2ebcf907ed34213f816592af04e6c160335d6311)
1<?php
2
3/**
4 * webtrees: online genealogy
5 * Copyright (C) 2021 webtrees development team
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <https://www.gnu.org/licenses/>.
16 */
17
18declare(strict_types=1);
19
20namespace Fisharebest\Webtrees\Date;
21
22/**
23 * Definitions for Roman dates.
24 *
25 * The 5.5.1 gedcom spec mentions this calendar, but gives no details of
26 * how it is to be represented.... This class is just a place holder so that
27 * webtrees won’t complain if it receives one.
28 */
29class RomanDate extends JulianDate
30{
31    // GEDCOM calendar escape
32    public const ESCAPE = '@#DROMAN@';
33
34    /**
35     * Generate the %E format for a date.
36     *
37     * @return string
38     */
39    protected function formatGedcomYear(): string
40    {
41        return sprintf('%04dAUC', $this->year);
42    }
43
44    /**
45     * Generate the %Y format for a date.
46     *
47     * @return string
48     */
49    protected function formatLongYear(): string
50    {
51        return $this->year . 'AUC';
52    }
53}
54