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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) 2014 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT); |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | use oat\tao\model\search\tokenizer\Tokenizer; |
| 23 | |
| 24 | /** |
| 25 | * XML Based Item Tokenizer. |
| 26 | * |
| 27 | * This Tokenizer implementation retrieves all text nodes of given |
| 28 | * XML files as the final list of tokens. |
| 29 | * |
| 30 | * @author Jérôme Bogaerts <jerome@taotesting.com> |
| 31 | */ |
| 32 | class taoItems_models_classes_search_XmlItemContentTokenizer implements Tokenizer |
| 33 | { |
| 34 | public function getStrings($values) |
| 35 | { |
| 36 | $contentStrings = []; |
| 37 | |
| 38 | if (is_array($values) === false) { |
| 39 | $values = [$values]; |
| 40 | } |
| 41 | |
| 42 | foreach ($values as $value) { |
| 43 | if ($value instanceof DOMDocument) { |
| 44 | $xpath = new DOMXPath($value); |
| 45 | $textNodes = $xpath->query('//text()'); |
| 46 | unset($xpath); |
| 47 | |
| 48 | foreach ($textNodes as $textNode) { |
| 49 | if (ctype_space($textNode->wholeText) === false) { |
| 50 | $contentStrings[] = trim($textNode->wholeText); |
| 51 | } |
| 52 | } |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | return $contentStrings; |
| 57 | } |
| 58 | } |