1.33.0/php/ParserTestResultNormalizer_8php_source.html

<?php

class ParserTestResultNormalizer {

    protected $doc, $xpath, $invalid;


    public static function normalize( $text, $funcs ) {

        $norm = new self( $text );

        if ( $norm->invalid ) {

            return $text;

        }

        foreach ( $funcs as $func ) {

            $norm->$func();

        }

        return $norm->serialize();

    }


    protected function __construct( $text ) {

        $this->doc = new DOMDocument( '1.0', 'utf-8' );


        // Note: parsing a supposedly XHTML document with an XML parser is not

        // guaranteed to give accurate results. For example, it may introduce

        // differences in the number of line breaks in <pre> tags.


        Wikimedia\suppressWarnings();

        if ( !$this->doc->loadXML( '<html><body>' . $text . '</body></html>' ) ) {

            $this->invalid = true;

        }

        Wikimedia\restoreWarnings();

        $this->xpath = new DOMXPath( $this->doc );

        $this->body = $this->xpath->query( '//body' )->item( 0 );

    }


    protected function removeTbody() {

        foreach ( $this->xpath->query( '//tbody' ) as $tbody ) {

            while ( $tbody->firstChild ) {

                $child = $tbody->firstChild;

                $tbody->removeChild( $child );

                $tbody->parentNode->insertBefore( $child, $tbody );

            }

            $tbody->parentNode->removeChild( $tbody );

        }

    }


    protected function trimWhitespace() {

        foreach ( $this->xpath->query( '//text()' ) as $child ) {

            if ( strtolower( $child->parentNode->nodeName ) === 'pre' ) {

                // Just trim one line break from the start and end

                if ( substr_compare( $child->data, "\n", 0 ) === 0 ) {

                    $child->data = substr( $child->data, 1 );

                }

                if ( substr_compare( $child->data, "\n", -1 ) === 0 ) {

                    $child->data = substr( $child->data, 0, -1 );

                }

            } else {

                // Trim all whitespace

                $child->data = trim( $child->data );

            }

            if ( $child->data === '' ) {

                $child->parentNode->removeChild( $child );

            }

        }

    }


    protected function serialize() {

        return strtr( $this->doc->saveXML( $this->body ),

            [ '<body>' => '', '</body>' => '' ] );

    }

}