Extractor.php

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<?php
namespace TYPO3\CMS\Core\Resource\OnlineMedia\Metadata;

/*
 * 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!
 */

use TYPO3\CMS\Core\Resource\Index\ExtractorInterface;
use TYPO3\CMS\Core\Resource\OnlineMedia\Helpers\OnlineMediaHelperInterface;
use TYPO3\CMS\Core\Resource\OnlineMedia\Helpers\OnlineMediaHelperRegistry;
use TYPO3\CMS\Core\Resource\File;

class Extractor implements ExtractorInterface
{
    public function getFileTypeRestrictions()
    {
        return array();
    }

    public function getDriverRestrictions()
    {
        return array();
    }

    public function getPriority()
    {
        return 10;
    }

    public function getExecutionPriority()
    {
        return 10;
    }

    public function canProcess(File $file)
    {
        return OnlineMediaHelperRegistry::getInstance()->getOnlineMediaHelper($file) !== false;
    }

    public function extractMetaData(File $file, array $previousExtractedData = array())
    {
        $helper = OnlineMediaHelperRegistry::getInstance()->getOnlineMediaHelper($file);
        return $helper !== false ? $helper->getMetaData($file) : [];
    }
}