68 lines
1.5 KiB
PHP
68 lines
1.5 KiB
PHP
<?php
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/**
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* (c) Kitodo. Key to digital objects e.V. <contact@kitodo.org>
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*
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* This file is part of the Kitodo and TYPO3 projects.
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*
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* @license GNU General Public License version 3 or later.
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* For the full copyright and license information, please read the
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* LICENSE.txt file that was distributed with this source code.
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*/
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namespace Kitodo\Dlf\Common;
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use TYPO3\CMS\Core\Utility\GeneralUtility;
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use Ubl\Iiif\Tools\UrlReaderInterface;
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/**
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* Implementation of Ubl\Iiif\Tools\UrlReaderInterface for the 'dlf' TYPO3 extension.
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* Allows the use of TYPO3 framework functions for loading remote documents in the
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* IIIF library.
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*
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* @author Lutz Helm <helm@ub.uni-leipzig.de>
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* @package TYPO3
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* @subpackage dlf
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* @access public
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*/
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class IiifUrlReader implements UrlReaderInterface
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{
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/**
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* Singleton instance of the class
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*
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* @access protected
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* @var IiifUrlReader
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*/
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protected static $instance;
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/**
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*
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* {@inheritDoc}
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* @see \Ubl\Iiif\Tools\UrlReaderInterface::getContent()
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*/
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public function getContent($url)
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{
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$fileContents = GeneralUtility::getUrl($url);
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if ($fileContents !== false) {
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return $fileContents;
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} else {
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return '';
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}
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}
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/**
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* Return a singleton instance.
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*
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* @static
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*
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* @return IiifUrlReader
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*/
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public static function getInstance()
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{
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if (!isset(self::$instance)) {
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self::$instance = new IiifUrlReader();
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}
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return self::$instance;
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}
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}
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