PPNode_DOM.php

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<?php
// phpcs:ignore Squiz.Classes.ValidClassName.NotCamelCaps
class PPNode_DOM implements PPNode {
 
    public $node;
    public $xpath;
 
    public function __construct( $node, $xpath = false ) {
        $this->node = $node;
    }
 
    public function getXPath() {
        if ( $this->xpath === null ) {
            $this->xpath = new DOMXPath( $this->node->ownerDocument );
        }
        return $this->xpath;
    }
 
    public function __toString() {
        if ( $this->node instanceof DOMNodeList ) {
            $s = '';
            foreach ( $this->node as $node ) {
                $s .= $node->ownerDocument->saveXML( $node );
            }
        } else {
            $s = $this->node->ownerDocument->saveXML( $this->node );
        }
        return $s;
    }
 
    public function getChildren() {
        return $this->node->childNodes ? new self( $this->node->childNodes ) : false;
    }
 
    public function getFirstChild() {
        return $this->node->firstChild ? new self( $this->node->firstChild ) : false;
    }
 
    public function getNextSibling() {
        return $this->node->nextSibling ? new self( $this->node->nextSibling ) : false;
    }
 
    public function getChildrenOfType( $type ) {
        return new self( $this->getXPath()->query( $type, $this->node ) );
    }
 
    public function getLength() {
        if ( $this->node instanceof DOMNodeList ) {
            return $this->node->length;
        } else {
            return false;
        }
    }
 
    public function item( $i ) {
        $item = $this->node->item( $i );
        return $item ? new self( $item ) : false;
    }
 
    public function getName() {
        if ( $this->node instanceof DOMNodeList ) {
            return '#nodelist';
        } else {
            return $this->node->nodeName;
        }
    }
 
    public function splitArg() {
        $xpath = $this->getXPath();
        $names = $xpath->query( 'name', $this->node );
        $values = $xpath->query( 'value', $this->node );
        if ( !$names->length || !$values->length ) {
            throw new MWException( 'Invalid brace node passed to ' . __METHOD__ );
        }
        $name = $names->item( 0 );
        $index = $name->getAttribute( 'index' );
        return [
            'name' => new self( $name ),
            'index' => $index,
            'value' => new self( $values->item( 0 ) ) ];
    }
 
    public function splitExt() {
        $xpath = $this->getXPath();
        $names = $xpath->query( 'name', $this->node );
        $attrs = $xpath->query( 'attr', $this->node );
        $inners = $xpath->query( 'inner', $this->node );
        $closes = $xpath->query( 'close', $this->node );
        if ( !$names->length || !$attrs->length ) {
            throw new MWException( 'Invalid ext node passed to ' . __METHOD__ );
        }
        $parts = [
            'name' => new self( $names->item( 0 ) ),
            'attr' => new self( $attrs->item( 0 ) ) ];
        if ( $inners->length ) {
            $parts['inner'] = new self( $inners->item( 0 ) );
        }
        if ( $closes->length ) {
            $parts['close'] = new self( $closes->item( 0 ) );
        }
        return $parts;
    }
 
    public function splitHeading() {
        if ( $this->getName() !== 'h' ) {
            throw new MWException( 'Invalid h node passed to ' . __METHOD__ );
        }
        return [
            'i' => $this->node->getAttribute( 'i' ),
            'level' => $this->node->getAttribute( 'level' ),
            'contents' => $this->getChildren()
        ];
    }
}