Sanitize::preprocess( string $html, SimplePie\int-mask-of<SimplePie::CONSTRUCT_*> $type ): string

574    protected function preprocess(string $html, int $type)575    {576        $ret = '';577        $html = preg_replace('%</?(?:html|body)[^>]*?'.'>%is', '', $html);578        if ($type & ~\SimplePie\SimplePie::CONSTRUCT_XHTML) {579            // Atom XHTML constructs are wrapped with a div by default580            // Note: No protection if $html contains a stray </div>!581            $html = '<div>' . $html . '</div>';582            $ret .= '<!DOCTYPE html>';583            $content_type = 'text/html';584        } else {585            $ret .= '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';586            $content_type = 'application/xhtml+xml';587        }588 589        $ret .= '<html><head>';590        $ret .= '<meta http-equiv="Content-Type" content="' . $content_type . '; charset=utf-8" />';591        $ret .= '</head><body>' . $html . '</body></html>';592        return $ret;593    }