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1<?php
2namespace Apie\IanaValueObjects\CharacterSet;
3
4use Apie\Core\Lists\StringSet;
5use Apie\Core\ValueObjects\Interfaces\LimitedOptionsInterface;
6use Apie\Core\ValueObjects\Interfaces\StringValueObjectInterface;
7use Apie\IanaValueObjects\StaticDataValueObject;
8
9/**
10 * All character sets registered in the IANA Character Sets Registry.
11 *
12 * @see https://www.iana.org/assignments/character-sets/character-sets.xhtml
13 *
14 * Any character set that is not active anymore can be used as well (for data integrity).
15 */
16final class CharacterSet implements StringValueObjectInterface, LimitedOptionsInterface
17{
18    use IsCharacterSet;
19    use StaticDataValueObject;
20
21    protected static function requiresActive(): bool
22    {
23        return false;
24    }
25
26    public static function getOptions(): StringSet
27    {
28        return new StringSet(array_keys(static::getData()));
29    }
30}