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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2024 (original work) Open Assessment Technologies SA; |
| 19 | */ |
| 20 | |
| 21 | declare(strict_types=1); |
| 22 | |
| 23 | namespace oat\taoQtiItem\model\qti\metadata\imsManifest; |
| 24 | |
| 25 | use DOMDocument; |
| 26 | use DOMXPath; |
| 27 | use InvalidArgumentException; |
| 28 | |
| 29 | class MetaMetadataExtractor |
| 30 | { |
| 31 | private const NAMESPACE_LOM = 'http://ltsc.ieee.org/xsd/LOM'; |
| 32 | // phpcs:disable Generic.Files.LineLength |
| 33 | private const META_METADATA_PROPERTIES_QUERY_STRING = '//imsmd:metaMetadata/default:extension/default:customProperties/default:property'; |
| 34 | // phpcs:enable Generic.Files.LineLength |
| 35 | |
| 36 | public function extract($manifest): array |
| 37 | { |
| 38 | if ($manifest instanceof DOMDocument === false) { |
| 39 | throw new InvalidArgumentException( |
| 40 | __('Metadata import requires an instance of DomManifest to extract metadata') |
| 41 | ); |
| 42 | } |
| 43 | |
| 44 | $xpath = new DOMXPath($manifest); |
| 45 | $xpath->registerNamespace('imsmd', self::NAMESPACE_LOM); |
| 46 | $xpath->registerNamespace('default', $manifest->documentElement->namespaceURI); |
| 47 | |
| 48 | $metaMetadata = []; |
| 49 | |
| 50 | $properties = $xpath->query(self::META_METADATA_PROPERTIES_QUERY_STRING); |
| 51 | foreach ($properties as $property) { |
| 52 | $uri = $xpath->evaluate('string(default:uri)', $property); |
| 53 | $alias = $xpath->evaluate('string(default:alias)', $property); |
| 54 | $label = $xpath->evaluate('string(default:label)', $property); |
| 55 | $multiple = $xpath->evaluate('string(default:multiple)', $property); |
| 56 | $checksum = $xpath->evaluate('string(default:checksum)', $property); |
| 57 | $widget = $xpath->evaluate('string(default:widget)', $property); |
| 58 | |
| 59 | if (strlen($uri) === 0 || strlen($label) === 0) { |
| 60 | continue; |
| 61 | } |
| 62 | |
| 63 | $metaMetadata[] = [ |
| 64 | 'uri' => trim($uri), |
| 65 | 'alias' => trim($alias), |
| 66 | 'label' => trim($label), |
| 67 | 'multiple' => trim($multiple), |
| 68 | 'checksum' => trim($checksum), |
| 69 | 'widget' => trim($widget), |
| 70 | ]; |
| 71 | } |
| 72 | |
| 73 | return $metaMetadata; |
| 74 | } |
| 75 | } |