Code Coverage for /workspace/src/extensions/Flow/includes/Parsoid/Extractor/CategoryExtractor.php

1	<?php
2
3	namespace Flow\Parsoid\Extractor;
4
5	use DOMElement;
6	use Flow\Model\WikiReference;
7	use Flow\Parsoid\Extractor;
8	use Flow\Parsoid\ReferenceFactory;
9
10	/**
11	* Runs against page content via Flow\Parsoid\ReferenceExtractor
12	* and collects all category references output by parsoid. The DOM
13	* spec states that categories are represented as such:
14	*
15	* <link rel="mw:PageProp/Category" href="...">
16	*
17	* Flow does not currently handle the other page properties. When it becomes
18	* necessary a more generic page property extractor should be implemented and
19	* this class should be removed.
20	*/
21	class CategoryExtractor implements Extractor {
22	/**
23	* @inheritDoc
24	*/
25	public function getXPath() {
26	return '//link[contains(concat(" ",normalize-space(@rel)," "), " mw:PageProp/Category " )]';
27	}
28
29	/**
30	* @inheritDoc
31	*/
32	public function perform( ReferenceFactory $factory, DOMElement $element ) {
33	// our provided xpath guarantees there is a rel attribute
34	// with our expected format so only perform a very minimal
35	// validation.
36	$rel = $element->getAttribute( 'rel' );
37	if ( strpos( ' ' . $rel . ' ', ' mw:PageProp/Category ' ) === false ) {
38	return null;
39	}
40
41	$href = $element->getAttribute( 'href' );
42	if ( $href ) {
43	return $factory->createWikiReference(
44	WikiReference::TYPE_CATEGORY,
45	urldecode( $href )
46	);
47	} else {
48	return null;
49	}
50	}
51	}