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| 1 | <?php |
| 2 | |
| 3 | namespace Flow\Import; |
| 4 | |
| 5 | use DOMDocument; |
| 6 | use DOMElement; |
| 7 | use DOMXPath; |
| 8 | use Flow\Conversion\Utils; |
| 9 | use MediaWiki\Title\Title; |
| 10 | |
| 11 | class TemplateHelper { |
| 12 | |
| 13 | /** |
| 14 | * @param string $htmlContent |
| 15 | * @param string $templateName |
| 16 | * @return string |
| 17 | * @throws \Flow\Exception\WikitextException |
| 18 | */ |
| 19 | public static function removeFromHtml( $htmlContent, $templateName ) { |
| 20 | $dom = Utils::createDOM( $htmlContent ); |
| 21 | $xpath = new DOMXPath( $dom ); |
| 22 | $templateNodes = $xpath->query( '//*[@typeof="mw:Transclusion"]' ); |
| 23 | |
| 24 | foreach ( $templateNodes as $templateNode ) { |
| 25 | /** @var DOMElement $templateNode */ |
| 26 | if ( $templateNode->hasAttribute( 'data-mw' ) ) { |
| 27 | $name = self::getTemplateName( $templateNode->getAttribute( 'data-mw' ) ); |
| 28 | if ( $name === $templateName ) { |
| 29 | $templateNode->parentNode->removeChild( $templateNode ); |
| 30 | if ( $templateNode->hasAttribute( 'about' ) ) { |
| 31 | $about = $templateNode->getAttribute( 'about' ); |
| 32 | self::removeAboutNodes( $dom, $about ); |
| 33 | } |
| 34 | } |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | $body = $xpath->query( '/html/body' )->item( 0 ); |
| 39 | return $dom->saveHTML( $body ); |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * @param string $dataMW |
| 44 | * @return string|null |
| 45 | */ |
| 46 | private static function getTemplateName( $dataMW ) { |
| 47 | try { |
| 48 | $mwAttr = json_decode( $dataMW ); |
| 49 | // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged |
| 50 | return @$mwAttr->parts[0]->template->target->wt; |
| 51 | } catch ( \Throwable $e ) { |
| 52 | return null; |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * @param DOMDocument $dom |
| 58 | * @param string $about |
| 59 | */ |
| 60 | private static function removeAboutNodes( DOMDocument $dom, $about ) { |
| 61 | $xpath = new DOMXPath( $dom ); |
| 62 | $aboutNodes = $xpath->query( '//*[@about="' . $about . '"]' ); |
| 63 | foreach ( $aboutNodes as $aboutNode ) { |
| 64 | $aboutNode->parentNode->removeChild( $aboutNode ); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * Extract templates from wikitext content. |
| 70 | * Requires Parsoid to reliably extract templates. |
| 71 | * |
| 72 | * @param string $wtContent |
| 73 | * @param Title $title |
| 74 | * @return string |
| 75 | */ |
| 76 | public static function extractTemplates( $wtContent, Title $title ) { |
| 77 | $content = Utils::convert( 'wikitext', 'html', $wtContent, $title ); |
| 78 | $dom = Utils::createDOM( $content ); |
| 79 | $xpath = new \DOMXPath( $dom ); |
| 80 | $templates = $xpath->query( '//*[@typeof="mw:Transclusion"]' ); |
| 81 | |
| 82 | $content = ''; |
| 83 | foreach ( $templates as $template ) { |
| 84 | $content .= $dom->saveHTML( $template ) . "\n"; |
| 85 | } |
| 86 | |
| 87 | return Utils::convert( 'html', 'wikitext', $content, $title ); |
| 88 | } |
| 89 | |
| 90 | } |