"application/xhtml+xml", "html" => "text/html", ); $q = array(); if(headers_sent()) { $chosenFormat = "html"; } else if(isset($_GET['forceFormat'])) { $chosenFormat = $_GET['forceFormat']; } else { // The W3C validator doesn't send an HTTP_ACCEPT header, but it can support xhtml. We put this special case in here so that // designers don't get worried that their templates are HTML4. if(isset($_SERVER['HTTP_USER_AGENT']) && substr($_SERVER['HTTP_USER_AGENT'], 0, 14) == 'W3C_Validator/') { $chosenFormat = "xhtml"; } else { foreach($mimes as $format => $mime) { $regExp = '/' . str_replace(array('+','/'),array('\+','\/'), $mime) . '(;q=(\d+\.\d+))?/i'; if (isset($_SERVER['HTTP_ACCEPT']) && preg_match($regExp, $_SERVER['HTTP_ACCEPT'], $matches)) { $preference = isset($matches[2]) ? $matches[2] : 1; if(!isset($q[$preference])) $q[$preference] = $format; } } if($q) { // Get the preferred format krsort($q); $chosenFormat = reset($q); } else { $chosenFormat = "html"; } } } $negotiator = new ContentNegotiator(); $negotiator->$chosenFormat( $response ); } /** * Only sends the HTTP Content-Type as "application/xhtml+xml" * if the template starts with the typical ", ,  ). * * @param $response HTTPResponse * @return string * @todo More flexible tag and entity parsing through regular expressions or tag definition lists */ function xhtml(HTTPResponse $response) { $content = $response->getBody(); // Only serve "pure" XHTML if the XML header is present if(substr($content,0,5) == '<' . '?xml' ) { $response->addHeader("Content-Type", "application/xhtml+xml; charset=" . self::$encoding); $response->addHeader("Vary" , "Accept"); $content = str_replace(' ',' ', $content); $content = str_replace('
','
', $content); $content = eregi_replace('(]*[^/>])>','\\1/>', $content); $response->setBody($content); } else { return $this->html($response); } } /* * Sends HTTP Content-Type as "text/html", and replaces existing doctypes with * HTML4.01 Strict. * Replaces self-closing tags like with unclosed solitary tags like . * Replaces all occurrences of "application/xhtml+xml" with "text/html" in the template. * Removes "xmlns" attributes and any Pragmas. */ function html(HTTPResponse $response) { $response->addHeader("Content-Type", "text/html; charset=" . self::$encoding); $response->addHeader("Vary", "Accept"); $content = $response->getBody(); $hasXMLHeader = (substr($content,0,5) == '<' . '?xml' ); $content = ereg_replace("<\\?xml[^>]+\\?>\n?",'',$content); $content = str_replace(array('/>','xml:lang','application/xhtml+xml'),array('>','lang','text/html'), $content); // Only replace the doctype in templates with the xml header if($hasXMLHeader) { $content = ereg_replace(']+>', '', $content); } $content = ereg_replace('setBody($content); } protected static $enabled = false; /** * Enable content negotiation for all templates, not just those with the xml header. */ static function enable() { self::$enabled = true; } /** * @deprecated in 2.3 */ static function disable() { self::$enabled = false; } /** * Returns true if negotation is enabled for the given response. * By default, negotiation is only enabled for pages that have the xml header. */ static function enabled_for($response) { $contentType = $response->getHeader("Content-Type"); // Disable content negotation for other content types if($contentType && substr($contentType, 0,9) != 'text/html' && substr($contentType, 0,21) != 'application/xhtml+xml') return false; if(self::$enabled) return true; else return (substr($response->getBody(),0,5) == '<' . '?xml'); } } ?>