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87.50% |
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CRAP | |
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EmptyNodeFixer | |
87.50% |
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50.00% |
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3.02 | |
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getXPath | |
100.00% |
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apply | |
66.67% |
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2.15 |
1 | <?php |
2 | |
3 | namespace Flow\Parsoid\Fixer; |
4 | |
5 | use Flow\Parsoid\Fixer; |
6 | use MediaWiki\Title\Title; |
7 | |
8 | /** |
9 | * We use saveXML() instead of saveHTML() to serialize our HTML DOMs, to work around bugs |
10 | * in saveHTML(). However, saveXML() serializes all empty tags as self-closing tags. |
11 | * This is correct for some HTML tags (like <img>) but breaks for others (like <a>). |
12 | * We can pass LIBXML_NOEMPTYTAG to saveXML(), but then no self-closing tags will ever be |
13 | * generated, and we get output like <img></img>. We want self-closing tags for "void" elements |
14 | * (like <img />), but non-self-closing tags for other elements (like <a></a>). |
15 | * |
16 | * This fixer accomplishes this by inserting an empty text node into every childless non-void tag. |
17 | * It is not used to map Parsoid HTML to display HTML like the other fixers are; instead it's used |
18 | * whenever we serialize a DOM. |
19 | */ |
20 | class EmptyNodeFixer implements Fixer { |
21 | /** |
22 | * Returns XPath matching elements that need to be transformed |
23 | * |
24 | * @return string XPath of elements this acts on |
25 | */ |
26 | public function getXPath() { |
27 | // List from https://www.w3.org/TR/2011/WD-html-markup-20110113/syntax.html#void-elements |
28 | $voidPattern = "self::area or self::base or self::br or self::col or self::command or " . |
29 | "self::embed or self::hr or self::img or self::input or self::keygen or self::link or " . |
30 | "self::meta or self::param or self::source or self::track or self::wbr"; |
31 | // Find empty non-void elements |
32 | $pattern = "//*[not($voidPattern)][not(node())]"; |
33 | return $pattern; |
34 | } |
35 | |
36 | /** |
37 | * Adds an empty text node to an element. |
38 | * |
39 | * @param \DOMNode $node |
40 | * @param Title $title |
41 | */ |
42 | public function apply( \DOMNode $node, Title $title ) { |
43 | if ( !$node instanceof \DOMElement ) { |
44 | return; |
45 | } |
46 | |
47 | $node->appendChild( $node->ownerDocument->createTextNode( '' ) ); |
48 | } |
49 | } |