62 lines
1.4 KiB
PHP
62 lines
1.4 KiB
PHP
<?php
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/*
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* This file is part of Respect/Validation.
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*
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* (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
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*
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* For the full copyright and license information, please view the LICENSE file
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* that was distributed with this source code.
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*/
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declare(strict_types=1);
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namespace Respect\Validation\Rules;
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use Respect\Validation\Exceptions\ComponentException;
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use function array_diff;
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use function in_array;
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use function mb_detect_encoding;
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use function mb_list_encodings;
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/**
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* Validates if a string is in a specific charset.
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*
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* @author Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
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* @author Henrique Moody <henriquemoody@gmail.com>
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* @author William Espindola <oi@williamespindola.com.br>
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*/
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final class Charset extends AbstractRule
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{
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/**
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* @var string[]
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*/
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private $charset;
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/**
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* Initializes the rule.
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*
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* @throws ComponentException
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*/
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public function __construct(string ...$charset)
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{
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$available = mb_list_encodings();
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if (!empty(array_diff($charset, $available))) {
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throw new ComponentException('Invalid charset');
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}
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$this->charset = $charset;
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}
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/**
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* {@inheritDoc}
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*/
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public function validate($input): bool
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{
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$detectedEncoding = mb_detect_encoding($input, $this->charset, true);
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return in_array($detectedEncoding, $this->charset, true);
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}
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}
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