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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 | } |