class.ilMDLanguageElement.php

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<?php

declare(strict_types=1);
/*
    +-----------------------------------------------------------------------------+
    | ILIAS open source                                                           |
    +-----------------------------------------------------------------------------+
    | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
    |                                                                             |
    | This program is free software; you can redistribute it and/or               |
    | modify it under the terms of the GNU General Public License                 |
    | as published by the Free Software Foundation; either version 2              |
    | of the License, or (at your option) any later version.                      |
    |                                                                             |
    | This program is distributed in the hope that it will be useful,             |
    | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
    | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
    | GNU General Public License for more details.                                |
    |                                                                             |
    | You should have received a copy of the GNU General Public License           |
    | along with this program; if not, write to the Free Software                 |
    | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
    +-----------------------------------------------------------------------------+
*/

class ilMDLanguageElement
{
    protected string $language_code;
    protected array $possible_language_codes;

    public function __construct(string $a_code)
    {
        $this->language_code = $a_code;

        $this->possible_language_codes = array(
            "aa",
            "ab",
            "af",
            "am",
            "ar",
            "as",
            "ay",
            "az",
            "ba",
            "be",
            "bg",
            "bh",
            "bi",
            "bn",
            "bo",
            "br",
            "ca",
            "co",
            "cs",
            "cy",
            "da",
            "de",
            "dz",
            "el",
            "en",
            "eo",
            "es",
            "et",
            "eu",
            "fa",
            "fi",
            "fj",
            "fo",
            "fr",
            "fy",
            "ga",
            "gd",
            "gl",
            "gn",
            "gu",
            "ha",
            "he",
            "hi",
            "hr",
            "hu",
            "hy",
            "ia",
            "ie",
            "ik",
            "id",
            "is",
            "it",
            "iu",
            "ja",
            "jv",
            "ka",
            "kk",
            "kl",
            "km",
            "kn",
            "ko",
            "ks",
            "ku",
            "ky",
            "la",
            "ln",
            "lo",
            "lt",
            "lv",
            "mg",
            "mi",
            "mk",
            "ml",
            "mn",
            "mo",
            "mr",
            "ms",
            "mt",
            "my",
            "na",
            "ne",
            "nl",
            "no",
            "oc",
            "om",
            "or",
            "pa",
            "pl",
            "ps",
            "pt",
            "qu",
            "rm",
            "rn",
            "ro",
            "ru",
            "rw",
            "sa",
            "sd",
            "sg",
            "sh",
            "si",
            "sk",
            "sl",
            "sm",
            "sn",
            "so",
            "sq",
            "sr",
            "ss",
            "st",
            "su",
            "sv",
            "sw",
            "ta",
            "te",
            "tg",
            "th",
            "ti",
            "tk",
            "tl",
            "tn",
            "to",
            "tr",
            "ts",
            "tt",
            "tw",
            "ug",
            "uk",
            "ur",
            "uz",
            "vi",
            "vo",
            "wo",
            "xh",
            "yi",
            "yo",
            "za",
            "zh",
            "zu"
        );
    }

    public function getLanguageCode(): string
    {
        if (in_array($this->language_code, $this->possible_language_codes, true)) {
            return $this->language_code;
        }
        return '';
    }
}