CssContent.php

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<?php
class CssContent extends TextContent {
 
    private $redirectTarget = false;
 
    public function __construct( $text, $modelId = CONTENT_MODEL_CSS ) {
        parent::__construct( $text, $modelId );
    }
 
    public function updateRedirect( Title $target ) {
        if ( !$this->isRedirect() ) {
            return $this;
        }
 
        // @phan-suppress-next-line PhanTypeMismatchReturnSuperType False positive
        return $this->getContentHandler()->makeRedirectContent( $target );
    }
 
    public function getRedirectTarget() {
        if ( $this->redirectTarget !== false ) {
            return $this->redirectTarget;
        }
        $this->redirectTarget = null;
        $text = $this->getText();
        if ( strpos( $text, '/* #REDIRECT */' ) === 0 ) {
            // Extract the title from the url
            if ( preg_match( '/title=(.*?)&action=raw/', $text, $matches ) ) {
                $title = Title::newFromText( urldecode( $matches[1] ) );
                if ( $title ) {
                    // Have a title, check that the current content equals what
                    // the redirect content should be
                    if ( $this->equals( $this->getContentHandler()->makeRedirectContent( $title ) ) ) {
                        $this->redirectTarget = $title;
                    }
                }
            }
        }
 
        return $this->redirectTarget;
    }
 
}