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| 1 | <?php |
| 2 | |
| 3 | namespace Flow\Parsoid\Fixer; |
| 4 | |
| 5 | use DOMElement; |
| 6 | use DOMNode; |
| 7 | use Flow\Conversion\Utils; |
| 8 | use Flow\Parsoid\Fixer; |
| 9 | use HtmlArmor; |
| 10 | use MediaWiki\Cache\LinkBatch; |
| 11 | use MediaWiki\MediaWikiServices; |
| 12 | use MediaWiki\Title\Title; |
| 13 | |
| 14 | /** |
| 15 | * Parsoid ignores red links. With good reason: redlinks should only be |
| 16 | * applied when rendering the content, not when it's created. |
| 17 | * |
| 18 | * This class updates HTML content from Parsoid with anchors generated by |
| 19 | * LinkRenderer. In addition to handling red links, this normalizes |
| 20 | * relative paths to start with a /, so the HTML renders correctly |
| 21 | * on any page. |
| 22 | */ |
| 23 | class WikiLinkFixer implements Fixer { |
| 24 | /** |
| 25 | * @var LinkBatch |
| 26 | */ |
| 27 | protected $batch; |
| 28 | |
| 29 | /** |
| 30 | * @param LinkBatch $batch |
| 31 | */ |
| 32 | public function __construct( LinkBatch $batch ) { |
| 33 | $this->batch = $batch; |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * @return string |
| 38 | */ |
| 39 | public function getXPath() { |
| 40 | return '//a[contains(concat(" ",normalize-space(@rel)," ")," mw:WikiLink ")]'; |
| 41 | } |
| 42 | |
| 43 | /** |
| 44 | * Parsoid ignores red links. With good reason: redlinks should only be |
| 45 | * applied when rendering the content, not when it's created. |
| 46 | * |
| 47 | * This method will parse a given content, fetch all of its links & let MW's |
| 48 | * LinkRenderer build the link HTML (which will take redlinks into account.) |
| 49 | * It will then substitute original link HTML for the one LinkRenderer generated. |
| 50 | * |
| 51 | * This replaces both existing and non-existent anchors because the relative links |
| 52 | * output by parsoid are not usable when output within a subpage. |
| 53 | * |
| 54 | * @param DOMNode $node |
| 55 | * @param Title $title Title to resolve relative links against |
| 56 | * @throws \Flow\Exception\WikitextException |
| 57 | */ |
| 58 | public function apply( DOMNode $node, Title $title ) { |
| 59 | if ( !$node instanceof DOMElement ) { |
| 60 | return; |
| 61 | } |
| 62 | |
| 63 | $href = $node->getAttribute( 'href' ); |
| 64 | if ( $href === '' ) { |
| 65 | return; |
| 66 | } |
| 67 | |
| 68 | $title = Utils::createRelativeTitle( rawurldecode( $href ), $title ); |
| 69 | if ( $title === null ) { |
| 70 | return; |
| 71 | } |
| 72 | |
| 73 | // gather existing link attributes |
| 74 | $attributes = []; |
| 75 | foreach ( $node->attributes as $attribute ) { |
| 76 | $attributes[$attribute->name] = $attribute->value; |
| 77 | } |
| 78 | // let MW build link HTML based on Parsoid data |
| 79 | $html = MediaWikiServices::getInstance()->getLinkRenderer()->makeLink( |
| 80 | $title, |
| 81 | new HtmlArmor( Utils::getInnerHtml( $node ) ), |
| 82 | $attributes |
| 83 | ); |
| 84 | // create new DOM from this MW-built link |
| 85 | $replacementNode = Utils::createDOM( $html ) |
| 86 | ->getElementsByTagName( 'a' ) |
| 87 | ->item( 0 ); |
| 88 | // import MW-built link node into content DOM |
| 89 | // @phan-suppress-next-line PhanTypeMismatchArgumentNullableInternal |
| 90 | $replacementNode = $node->ownerDocument->importNode( $replacementNode, true ); |
| 91 | // replace Parsoid link with MW-built link |
| 92 | $node->parentNode->replaceChild( $replacementNode, $node ); |
| 93 | } |
| 94 | } |