<?php

/**
 * (c) Kitodo. Key to digital objects e.V. <contact@kitodo.org>
 *
 * This file is part of the Kitodo and TYPO3 projects.
 *
 * @license GNU General Public License version 3 or later.
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 */

namespace Kitodo\Dlf\Format;

/**
 * Metadata TEI-Header format class for the 'dlf' extension
 *
 * @author Sebastian Meyer <sebastian.meyer@slub-dresden.de>
 * @package TYPO3
 * @subpackage dlf
 * @access public
 */
class TeiHeader implements \Kitodo\Dlf\Common\MetadataInterface
{
    /**
     * This extracts the essential TEIHDR metadata from XML
     *
     * @access public
     *
     * @param \SimpleXMLElement $xml: The XML to extract the metadata from
     * @param array &$metadata: The metadata array to fill
     *
     * @return void
     */
    public function extractMetadata(\SimpleXMLElement $xml, array &$metadata)
    {
        $xml->registerXPathNamespace('teihdr', 'http://www.tei-c.org/ns/1.0');
    }
}
