97 lines
2.9 KiB
PHP
97 lines
2.9 KiB
PHP
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<?php
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/**
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2013 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT);
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*
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*
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*/
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use qtism\common\ResolutionException;
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use qtism\common\Resolver;
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use oat\taoQtiItem\model\qti\Service;
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use oat\generis\model\OntologyAwareTrait;
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/**
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* The ItemResolver class implements the logic to resolve TAO Item URIs to
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* paths to the related QTI-XML files.
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*
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* @author Jérôme Bogaerts <jerome@taotesting.com>
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*
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*/
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class taoQtiTest_helpers_ItemResolver implements Resolver
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{
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use OntologyAwareTrait;
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/**
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* @var Service
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*/
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private $service;
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/** @var string[] */
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private $tmpFiles = [];
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public function __construct(Service $itemService)
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{
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$this->service = $itemService;
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}
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/**
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* Resolve the given TAO Item URI in the path to
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* the related QTI-XML file.
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*
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* @param string $url The URI of the TAO Item to resolve.
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* @return string The path to the related QTI-XML file.
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* @throws ResolutionException If an error occurs during the resolution of $url.
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*/
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public function resolve($url)
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{
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$taoItem = new core_kernel_classes_Resource($url);
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if ($taoItem->exists() === false) {
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$msg = __("The QTI Item with URI '%s' cannot be found.", $url);
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throw new ResolutionException($msg);
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}
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// The item is retrieved from the database.
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// We can try to reach the QTI-XML file by detecting
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// where it is supposed to be located.
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// strip xinclude, we don't need that at the moment.
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$raw = $this->service->getXmlByRdfItem($this->getResource($url));
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$dom = new DOMDocument();
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$dom->loadXML($raw);
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foreach ($dom->getElementsByTagNameNS('http://www.w3.org/2001/XInclude', 'include') as $element) {
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$element->parentNode->removeChild($element);
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}
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$tmpfile = sys_get_temp_dir() . '/' . md5($url) . '.xml';
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file_put_contents($tmpfile, $dom->saveXML());
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$this->tmpFiles[] = $tmpfile;
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return $tmpfile;
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}
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public function __destruct()
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{
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foreach ($this->tmpFiles as $tmpFile) {
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if (is_writable($tmpFile)) {
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unlink($tmpFile);
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}
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}
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}
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}
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