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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace Wikimedia\Parsoid\Wt2Html\PP\Processors; |
| 5 | |
| 6 | use Wikimedia\Parsoid\Config\Env; |
| 7 | use Wikimedia\Parsoid\DOM\Element; |
| 8 | use Wikimedia\Parsoid\DOM\Node; |
| 9 | use Wikimedia\Parsoid\Utils\DiffDOMUtils; |
| 10 | use Wikimedia\Parsoid\Utils\DOMDataUtils; |
| 11 | use Wikimedia\Parsoid\Utils\WTUtils; |
| 12 | use Wikimedia\Parsoid\Wt2Html\Frame; |
| 13 | use Wikimedia\Parsoid\Wt2Html\Wt2HtmlDOMProcessor; |
| 14 | |
| 15 | class ProcessTreeBuilderFixups implements Wt2HtmlDOMProcessor { |
| 16 | |
| 17 | private static function removeAutoInsertedEmptyTags( Frame $frame, Node $node ): void { |
| 18 | $c = $node->firstChild; |
| 19 | while ( $c !== null ) { |
| 20 | // FIXME: Encapsulation only happens after this phase, so you'd think |
| 21 | // we wouldn't encounter any, but the html pre tag inserts extension |
| 22 | // content directly, rather than passing it through as a fragment for |
| 23 | // later unpacking. Same as above. |
| 24 | if ( WTUtils::isEncapsulationWrapper( $c ) ) { |
| 25 | $c = WTUtils::skipOverEncapsulatedContent( $c ); |
| 26 | continue; |
| 27 | } |
| 28 | |
| 29 | if ( $c instanceof Element ) { |
| 30 | self::removeAutoInsertedEmptyTags( $frame, $c ); |
| 31 | $dp = DOMDataUtils::getDataParsoid( $c ); |
| 32 | |
| 33 | // We do this down here for all elements since the quote transformer |
| 34 | // also marks up elements as auto-inserted and we don't want to be |
| 35 | // constrained by any conditions. Further, this pass should happen |
| 36 | // before paragraph wrapping on the dom, since we don't want this |
| 37 | // stripping to result in empty paragraphs. |
| 38 | |
| 39 | // Delete empty auto-inserted elements |
| 40 | if ( !empty( $dp->autoInsertedStart ) && !empty( $dp->autoInsertedEnd ) && |
| 41 | ( !$c->hasChildNodes() || |
| 42 | ( DiffDOMUtils::hasNChildren( $c, 1 ) && |
| 43 | !( $c->firstChild instanceof Element ) && |
| 44 | preg_match( '/^\s*$/D', $c->textContent ) |
| 45 | ) |
| 46 | ) |
| 47 | ) { |
| 48 | $next = $c->nextSibling; |
| 49 | if ( $c->firstChild ) { |
| 50 | // migrate the ws out |
| 51 | $c->parentNode->insertBefore( $c->firstChild, $c ); |
| 52 | } |
| 53 | $c->parentNode->removeChild( $c ); |
| 54 | $c = $next; |
| 55 | continue; |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | $c = $c->nextSibling; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * @inheritDoc |
| 65 | */ |
| 66 | public function run( |
| 67 | Env $env, Node $root, array $options = [], bool $atTopLevel = false |
| 68 | ): void { |
| 69 | self::removeAutoInsertedEmptyTags( $options['frame'], $root ); |
| 70 | } |
| 71 | } |