MimeTypeDetector.php

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<?php
declare(strict_types = 1);
namespace ‪TYPO3\CMS\Core\Resource;
 
/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */
 
final class ‪MimeTypeDetector
{
    private ‪$collection;
 
    public function ‪__construct()
    {
        $this->collection = new ‪MimeTypeCollection();
    }
 
    public function getMimeTypesForFileExtension(string $fileExtension): array
    {
        $mimeTypes = [];
        $fileExtension = strtolower($fileExtension);
        foreach ($this->collection->getMap() as $mimeType => $availableExtensions) {
            if (in_array($fileExtension, $availableExtensions, true)) {
                $mimeTypes[] = $mimeType;
            }
        }
        return $mimeTypes;
    }
 
    public function getFileExtensionsForMimeType(string $mimeType): array
    {
        return $this->collection->getMap()[strtolower($mimeType)] ?? [];
    }
}