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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) 2021 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT); |
| 19 | * |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | declare(strict_types=1); |
| 24 | |
| 25 | namespace oat\taoQtiItem\model\qti\CustomInteractionAsset\Extractor; |
| 26 | |
| 27 | use oat\taoQtiItem\model\qti\CustomInteractionAsset\Extractor\Api\AssetExtractorInterface; |
| 28 | use oat\taoQtiItem\model\qti\interaction\CustomInteraction; |
| 29 | |
| 30 | /** |
| 31 | * @author Kiryl Poyu <kyril.poyu@taotesting.com> |
| 32 | */ |
| 33 | class TextReaderAssetExtractor implements AssetExtractorInterface |
| 34 | { |
| 35 | public const INTERACTION_IDENTIFIER = 'textReaderInteraction'; |
| 36 | private const CONTENT_PREFIX = 'content-'; |
| 37 | |
| 38 | /** |
| 39 | * @inheritDoc |
| 40 | */ |
| 41 | public function extract(CustomInteraction $interaction): iterable |
| 42 | { |
| 43 | return array_filter($interaction->getProperties(), function ($value, $key) { |
| 44 | return strpos($key, self::CONTENT_PREFIX) === 0 |
| 45 | && is_string($value) && $this->checkIsDataUrl($value); |
| 46 | }, ARRAY_FILTER_USE_BOTH); |
| 47 | } |
| 48 | |
| 49 | private function checkIsDataUrl(string $url): bool |
| 50 | { |
| 51 | $urlScheme = parse_url($url, PHP_URL_SCHEME); |
| 52 | |
| 53 | return $urlScheme === 'data'; |
| 54 | } |
| 55 | } |