/controller/compressor.php

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<?php
/**
 * File from WEBO Site SpeedUp, WEBO Software (http://www.webogroup.com/)
 * Gzips and minifies the JavaScript and CSS within the head tags of a page.
 * Can also gzip and minify the page itself
 * and 100+ other cool web performance optimization techniques
 * Based on Web Optimizer, which was based on PHP Speedy
 *
 **/
class web_optimizer {

	/**
	* Constructor
	* Sets the options and defines the gzip headers
	**/
	function web_optimizer ($options = false) {
		$currency = empty($_COOKIE['WSS_CURRENCY']) ? $options['options']['currency'] : $_COOKIE['WSS_CURRENCY'];
		$rurl = empty($options['uri']) ? empty($_SERVER['REQUEST_URI']) ? '' : $_SERVER['REQUEST_URI'] : $options['uri'];
		$homepage = empty($options['options']['html_cache']['ignore_list']) && empty($options['options']['restricted']) ? '' :
			in_array($rurl, array('/', '/index.php', '/index.html', '/#' . $currency));
/* skip processing if disabled or restricted */
		if (!empty($_GET['web_optimizer_disabled']) || (!empty($options['options']['restricted']) &&
			(preg_match("@" . preg_replace("/ /", "|", preg_replace("/([\?!\^\$\|\(\)\[\]\{\}])/", "\\\\$1", $options['options']['restricted'])) . "@", $rurl))) ||
			(strpos($options['options']['restricted'], '#') !== false && $homepage)) {
				$this->options['active'] = 0;
				return;
		}
/* A/B testing,  */
		if (!empty($options['options']['footer']['ab'])) {
			if (empty($_COOKIE['WSS_DISABLED']) && empty($_COOKIE['WSS_ENABLED'])) {
				$ab = (microtime()*100)%100 < round($options['options']['footer']['ab']);
				setcookie($ab ? "WSS_ENABLED" : "WSS_DISABLED", 1, time() + 60*60, '/', $_SERVER['HTTP_HOST'], false, true);
				if (!$ab) {
					$_COOKIE['WSS_DISABLED'] = 1;
				}
			}
		}
/* initialize chained optimization */
		$this->web_optimizer_stage = round(empty($_GET['web_optimizer_stage']) ? 0 : $_GET['web_optimizer_stage']);
		$this->debug_mode = empty($_GET['web_optimizer_debug']) && empty($_COOKIE['web_optimizer_debug']) ? 0 : 1;
/* allow merging of other classes with this one */
		foreach ($options as $key => $value) {
			$this->$key = $value;
		}
/* get chained optimization params */
		if (!empty($this->web_optimizer_stage)) {
			$this->username = htmlspecialchars(empty($_GET['username']) ? '' :
				$_GET['username']);
			$this->password = htmlspecialchars(empty($_GET['password']) ? '' :
				$_GET['password']);
			$this->auto_rewrite = round(empty($_GET['auto_rewrite']) ? '' :
				$_GET['auto_rewrite']);
			$this->chained_redirect = 'http://' .
				$this->options['host'] .
				str_replace($this->options['document_root'], '/', $this->options['html_cachedir']) .
				'optimizing.php';
			$this->cache_version = round(empty($_GET['cache_version']) ? '' :
				$_GET['cache_version']);
/* get major stage number, all stages:
 -1		- system, envelope all <script> to try-catch-document.write
 0-9	- inilialization, starts in administrative interface
 10-13	- JS file generation, 1st major stage (common browsers)
 14-19	- CSS Sprites / data:URI generation, 1st major stage
 20-24	- CSS file generation + page parsing, 1st major stage
 25-28	- JS file generation, 2nd major stage (IE 6.0)
 29-34	- CSS Sprites / mhtml generation, 2nd major stage
 35-39	- CSS file generation + page parsing, 2nd major stage
 40-43	- JS file generation, 3rd major stage (IE 7.0)
 44-49	- CSS Sprites / mhtml generation, 2nd major stage
 50-54	- CSS file generation + page parsing, 2nd major stage
 55-58	- JS file generation, 4th major stage (IE 8.0)
 59-64	- CSS Sprites / data:URI generation, 4th major stage
 65-69	- CSS file generation + page parsing, 4th major stage
 70-73	- JS file generation, 5th major stage (IE 7.0 @ Vista)
 74-79	- CSS Sprites generation, 5th major stage
 80-84	- CSS file generation + page parsing, 5th major stage
*/
			$this->cache_stage = floor(($this->web_optimizer_stage - 10) / 15);
		}
		$this->options['active'] = $this->debug_mode ? 1 : $this->options['active'];
/* disable any actions if not active */
		if (empty($this->options['active'])) {
			return;
		}
/* define head of the webpage for scripts / styles */
		$this->head = '';
/* remember current time */
		$this->time = empty($_SERVER['REQUEST_TIME']) ? time() : $_SERVER['REQUEST_TIME'];
/* skip buffering (need for integration as plugin) */
		$this->buffered = $this->options['buffered'];
/* Sets User Agent to differ IE from non-IE */
		$this->ua = empty($_SERVER['HTTP_USER_AGENT']) ? '' : $_SERVER['HTTP_USER_AGENT'];
/* HTTPS or not ? */
		$this->https = empty($_SERVER['HTTPS']) ? '' : 's';
/* Set list of outdated IE */
		$this->ies = array('.ie4', '.ie5', '.ie6', '.ie7');
/* Set options */
		$this->set_options();
/* Include base plugin class */
		if (is_array($this->options['plugins'])) {
			include_once($this->options['css']['installdir'] . 'libs/php/class.plugin.php');
		}
/* Remember current page encoding */
		$this->encoding = '';
/* Define the gzip headers */
		$this->set_gzip_headers();
/* Deal with flushed content or not? */
		$this->flushed = false;
		$excluded_html_pages = '';
		$included_user_agents = '';
		$restricted_cookie = 0;
		if (!empty($this->options['page']['cache'])) {
			$this->start_cache_engine();
			if (!empty($this->clear_cache_key)) {
				$this->clear_html_cache($this->clear_cache_key);
			}
/* HTML cache ? */
			if (!empty($this->options['page']['cache_ignore'])) {
				$excluded_html_pages = preg_replace("/ /", "|", preg_replace("/([\?!\^\$\|\(\)\[\]\{\}])/", "\\\\$1", str_replace(array('# ', '#'), '', $this->options['page']['cache_ignore'])));
			}
			if (!empty($this->options['page']['allowed_user_agents'])) {
				$included_user_agents = preg_replace("/ /", "|", preg_replace("/([\?!\^\$\|\(\)\[\]\{\}])/", "\\\\$1", $this->options['page']['allowed_user_agents']));
			}
			if (!empty($this->options['page']['exclude_cookies'])) {
				$cookies = explode(" ", $this->options['page']['exclude_cookies']);
				foreach ($cookies as $cookie) {

					if ($e = strpos($cookie, '=')) {
						$c = substr($cookie, 0, $e);
						$e = substr($cookie, $e+1);
						if (isset($_COOKIE[$c]) && $_COOKIE[$c] == $e) {
							$restricted_cookie = 1;
						}
					} else {
						if (isset($_COOKIE[$cookie])) {
							$restricted_cookie = 1;
						}
					}
				}
			}
		}
/* cache if
  - option is enabled,
  - don't parse excluded pages (including home page),
  - or parse included USER AGENTS,
  - don't parse pages with excluded coockies,
  - flush or gzip for HTML are disabled,
  - headers have not been sent,
  - page is requested by GET,
  - no chained optimization,
  - no debug mode,
  - external cache restriction,
  - exclude domains except the activated one for non-corporate licenses,
  - disable cache in case of negative A/B test.
*/
		$this->cache_me = !empty($this->options['page']['cache']) &&
			((empty($this->options['page']['cache_ignore']) && !$this->options['page']['ignore_include']) ||
				(!$this->options['page']['ignore_include'] && 
				(!$excluded_html_pages || !preg_match("!" . $excluded_html_pages . "!is", $this->uri)) &&
				(strpos($this->options['page']['cache_ignore'], '#') === false || !$homepage)) ||
				($this->options['page']['ignore_include'] &&
				(($excluded_html_pages && preg_match("!" . $excluded_html_pages . "!is", $this->uri)) ||
				(strpos($this->options['page']['cache_ignore'], '#') !== false && $homepage))) ||
				!$this->ua ||
				($included_user_agents && preg_match("!" . $included_user_agents . "!is", $this->ua))) &&
			!$restricted_cookie &&
			(empty($this->options['page']['gzip']) ||
				empty($this->options['page']['flush'])) &&
			!headers_sent() &&
			(getenv('REQUEST_METHOD') == 'GET') &&
			empty($this->web_optimizer_stage) &&
			!$this->debug_mode &&
			empty($this->no_cache) &&
			($this->premium == 3 || strpos($this->options['host'], $this->host) !== false) &&
			(empty($this->options['page']['ab']) || empty($_COOKIE['WSS_DISABLED']));
/* check if we can get out cached page */
		if (!empty($this->cache_me)) {
			$this->uri = $this->convert_request_uri(empty($this->uri) ? '' : $this->uri);
			$jutility = class_exists('JUtility', false);
			$jsession = class_exists('JSession', false);
/* gzip cached content before output? (plugins have onCache), JUtility must parse content */
			$gzip_me = is_array($this->options['plugins']) || $jutility || $jsession;
			$cache_plain_key = $this->view->ensure_trailing_slash($this->uri) .
				'index' .
				$this->ua_mod .
				'.html' .
				($this->options['page']['https_separate'] ? $this->https : '');
			$cache_key = $cache_plain_key .
				($this->options['page']['flush'] ||
				empty($this->encoding_ext) ||
				$gzip_me ? '' : $this->encoding_ext);
			$timestamp_ajax = 0;
			$cache_key_ajax = $cache_plain_key . '.ajax';
			if (defined('WSS_CACHE_MISS')) {
				$timestamp = 0;
			} else {
				$timestamp = $this->cache_engine->get_mtime($cache_key);
				if ($this->options['page']['ajax_timeout']) {
					$timestamp_ajax = $this->cache_engine->get_mtime($cache_key_ajax);
				}
			}
/* try to get from cache non-gzipped page if gzipped one doesn't exist */
			if (!$timestamp && !$this->options['page']['flush'] && !empty($this->encoding_ext) && !$gzip_me) {
				$timestamp = $this->cache_engine->get_mtime($cache_plain_key);
				$gzip_me = 1;
			}
			if (!$timestamp && !$timestamp_ajax && !defined('WSS_CACHE_MISS')) {
				define('WSS_CACHE_MISS', 1);
			}
			if (($timestamp &&
				$this->time - $timestamp < $this->options['page']['cache_timeout'] &&
				($content = $this->cache_engine->get_entry($gzip_me ? $cache_plain_key : $cache_key))) ||
				($timestamp_ajax &&
				$this->time - $timestamp_ajax < $this->options['page']['ajax_timeout'] &&
				($content = $this->cache_engine->get_entry($cache_key_ajax)))) {
				if ($jutility) {
					$token = JUtility::getToken();
				}
				elseif ($jsession) {
					$token = JSession::getFormToken();
				}
				if (!empty($token)) {
					$content = str_replace('##WSS_JTOKEN_WSS##', $token, $content);
				}
/* execute plugin-specific logic */
				if (is_array($this->options['plugins'])) {
					foreach ($this->options['plugins'] as $plugin) {
						$plugin_file = $this->options['css']['installdir'] . 'plugins/' . $plugin . '.php';
						if (@is_file($plugin_file)) {
							include_once($plugin_file);
							$web_optimizer_plugin = new $plugin;
							$content = $web_optimizer_plugin->onAfterOptimization($content);
						}
					}
				}
				$hash = crc32($content) . (empty($this->encoding) ? '' : '-' . str_replace("x-", "", $this->encoding));
/* check for return visits */
				if ((isset($_SERVER['HTTP_IF_NONE_MATCH']) &&
					stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) == '"' . $hash . '"') ||
					(isset($_SERVER['HTTP_IF_MATCH']) &&
					stripslashes($_SERVER['HTTP_IF_MATCH']) == '"' . $hash . '"')) {
/* return visit and no modifications, so do not send anything */
					@header ("HTTP/1.0 304 Not Modified");
					@header ("Content-Length: 0");
					$this->di();
				}
/* define gzip headers */
				$this->set_gzip_header();
				if ($gzip_me && $this->encoding) {
					$cnt = $this->create_gz_compress($content, in_array($this->encoding, array('gzip', 'x-gzip')));
					if (!empty($cnt)) {
						$content = $cnt;
/* skip gzip if we can't compress content */
					} else {
						$this->options['page']['gzip'] = 0;
						$this->encoding = '';
					}
				}
/* set ETag, thx to merzmarkus */
				@header("ETag: \"" . $hash . "\"");
				if ($gzip_me && ($this->encoding || empty($this->gzip_set)) && (empty($_SERVER['SERVER_PROTOCOL']) || $_SERVER['SERVER_PROTOCOL'] == 'HTTP/1.0')) {
					@header("Content-Length: " . strlen($content));
				}
/* set content-type */
				if (!empty($this->options['charset'])) {
					@header("Content-Type: text/html; charset=" . $this->options['charset']);
				}
				if (empty($this->web_optimizer_stage) &&
					$this->options['page']['clientside_cache']) {
/* not really GMT but is valid locally */
					$ExpStr = date("D, d M Y H:i:s",
						$this->time + $this->options['page']['clientside_timeout']) . " GMT";
					@header("Cache-Control: " .
						($this->options['page']['gzip'] ? 'private' : 'public') .
						", max-age=" .
						$this->options['page']['clientside_timeout']);
					@header("Expires: " . $ExpStr);
				}
				while (@ob_end_clean());
				@header('WEBO: cache hit');
				echo $content;
/* content is a head part, flush it after */
				if ($this->options['page']['flush']) {
					flush();
					$this->flushed = true;
				} else {
					$this->di(1);
				}
			} else {
				@header('WEBO: cache miss');
			}
		} elseif (!empty($this->options['page']['cache'])) {
			@header('WEBO: cache miss');
		}
/* remember Joomla! caching (VirtueMart) */
		$this->joomla_cache = $this->options['page']['cache'] && (class_exists('JUtility', false) || class_exists('JSession', false));
/* remember WordPress caching (WP Digi Cart) */
		$this->wp_cache = defined('WP_CACHE') && @is_dir($this->options['document_root'] . 'wp-content/plugins/wp-cart-for-digital-products/');
/* remember Generic caching for other carts */
		$this->generic_cache = !$this->joomla_cache && !$this->wp_cache && $this->options['page']['cache'];
/* change some hosts if HTTPS is used */
		if ($this->https && !empty($this->options['page']['parallel_https'])) {
			$this->options['javascript']['host'] =
			$this->options['css']['host'] =
			$this->options['page']['parallel_hosts'] = 
			$this->options['page']['parallel_https'];
		}
/* number of external files calls to process */
		$this->initial_files = array();
/* set internal encoding */
		$this->charset = empty($wss_encoding) ? 'utf8' : $wss_encoding;
/* prepare escaped host */
		$this->host_escaped = str_replace('.', '\.', $this->host);
/* activate application */
		$this->options['active'] = 1;
		if ($this->buffered) {
/* Start things off */
			$this->start();
		}
	}

	/**
	* Write installation progress to JavaScript file
	*
	**/
	function write_progress ($progress) {
		$this->write_file($this->options['javascript']['cachedir'] . 'progress.php', $progress);
	}

	/**
	* Options are read from config.webo.php
	**/
	function set_options () {
/* Set paths with new options */
		$this->options['document_root'] = empty($this->options['document_root']) ? '' : $this->options['document_root'];
		$this->view->set_paths($this->options['document_root']);
/* Set local root if chained optimization */
		if (!empty($this->web_optimizer_stage)) {
			$this->view->paths['full']['current_directory'] = $this->view->paths['full']['document_root'];
			$this->view->paths['relative']['current_directory'] = $this->view->paths['relative']['document_root'];
			$_SERVER['REQUEST_URI'] = '/';
/* force User Agent on chained optimization */
			$mods = array(
/* all common browsers except IE */
				'',
/* IE 6.0, when will it die? */
				'.ie6',
/* IE 7.0 */
				'.ie7',
/* IE 8.0 */
				'.ie8',
/* Mobile Agents */
				'.ma',
/* dummy UA, thx to peterbowey */
				'.end'
			);
			$this->ua_mod = $mods[$this->cache_stage];
		}
		$this->premium = $this->view->validate_license($this->options['license'], $this->options['html_cachedir'], $this->options['host']);
		$this->set_user_agent();
		$webo_cachedir = $this->view->unify_dir_separator(realpath(dirname(__FILE__) . '/../') . '/');
/* ensure trailing slashes */
		$this->options['html_cachedir'] = $this->view->ensure_trailing_slash($this->options['html_cachedir']);
		$this->options['css_cachedir'] = $this->view->ensure_trailing_slash($this->options['css_cachedir']);
		$this->options['javascript_cachedir'] = $this->view->ensure_trailing_slash($this->options['javascript_cachedir']);
/* normalize host */
		if (!empty($this->options['host'])) {
			$this->options['host'] = preg_replace("!^https?://!", "", $this->options['host']);
		}
/* Read in options */
		$full_options = array(
			"javascript" => array(
				"cachedir" => $this->options['javascript_cachedir'],
				"cachedir_relative" => str_replace($this->options['document_root'], "/", $this->options['javascript_cachedir']),
				"installdir" => $webo_cachedir,
				"gzip" => $this->options['gzip']['javascript'] &&
					((!$this->options['htaccess']['mod_gzip'] &&
						!$this->options['htaccess']['mod_deflate'] &&
						(!$this->options['htaccess']['mod_rewrite'] ||
							!$this->options['htaccess']['mod_mime'] ||
							!$this->options['htaccess']['mod_expires'])) ||
					!$this->options['htaccess']['enabled']),
				"gzip_level" => round($this->options['gzip']['javascript_level']),
				"minify" => $this->options['minify']['javascript'],
				"minify_body" => $this->options['minify']['javascript_body'],
				"minify_with" => $this->options['minify']['with_jsmin'] ?
					'jsmin' : ($this->options['minify']['with_yui'] && $this->premium > 1 ?
					'yui' : ($this->options['minify']['with_packer'] && $this->premium ?
					'packer' : ($this->options['minify']['with_google'] && $this->premium > 1 ?
					'google' : ''))),
				"minify_try" => $this->options['external_scripts']['include_try'] &&
					$this->premium,
				"minify_exclude" => $this->options['external_scripts']['minify_exclude'],
				"remove_duplicates" => $this->options['external_scripts']['duplicates'] &&
					$this->premium,
				"far_future_expires" => $this->options['far_future_expires']['javascript'] &&
					!$this->options['htaccess']['mod_expires'],
				"far_future_expires_php" => $this->options['far_future_expires']['javascript'],
				"far_future_expires_rewrite" => $this->options['htaccess']['mod_rewrite'] &&
					$this->options['htaccess']['enabled'] &&
					$this->options['far_future_expires']['javascript'],
				"far_future_expires_static" => ((!($this->options['htaccess']['mod_rewrite'] ||
						$this->options['htaccess']['mod_expires']) ||
					!$this->options['htaccess']['enabled']) &&
					$this->options['far_future_expires']['javascript']) || 
					((!($this->options['htaccess']['mod_rewrite'] ||
						$this->options['htaccess']['mod_deflate'] ||
						$this->options['htaccess']['mod_gzip']) ||
					!$this->options['htaccess']['enabled']) &&
					$this->options['gzip']['javascript']),
				"unobtrusive_body" => $this->premium && $this->options['unobtrusive']['body'] &&
					!$this->options['unobtrusive']['all'],
				"external_scripts" => $this->options['external_scripts']['on'],
				"inline_scripts" => $this->options['external_scripts']['inline'] &&
					($this->options['minify']['javascript'] || $this->options['rocket']['reorder']),
				"inline_scripts_body" => $this->options['external_scripts']['inline_body'] &&
					($this->options['minify']['javascript'] || $this->options['rocket']['reorder']),
				"external_scripts_head_end" => $this->options['external_scripts']['head_end'],
				"external_scripts_exclude" => $this->options['external_scripts']['ignore_list'],
				"external_scripts_mask" => $this->premium > 1 ? $this->options['external_scripts']['include_mask'] : '',
				"remove_list" => $this->premium > 1 ? $this->options['external_scripts']['remove_list'] : '',
				"dont_check_file_mtime" => $this->options['performance']['mtime'],
				"file" => $this->premium > 1 ? $this->options['minify']['javascript_file'] : '',
				"host" => $this->premium ? $this->options['minify']['javascript_host'] : '',
				"https" => $this->premium > 1 ? $this->options['parallel']['https'] : '',
				"rocket" => $this->options['rocket']['javascript'] && !$this->options['minify']['javascript'],
				"rocket_external" => $this->options['rocket']['javascript_external'] && !$this->options['minify']['javascript'],
				"reorder" => $this->options['rocket']['reorder']
			),
			"css" => array(
				"cachedir" => $this->options['css_cachedir'],
				"cachedir_relative" => str_replace($this->options['document_root'], "/", $this->options['css_cachedir']),
				"installdir" => $webo_cachedir,
				"gzip" => $this->options['gzip']['css'] &&
					((!$this->options['htaccess']['mod_gzip'] &&
						!$this->options['htaccess']['mod_deflate'] &&
						(!$this->options['htaccess']['mod_rewrite'] ||
							!$this->options['htaccess']['mod_mime'] ||
							!$this->options['htaccess']['mod_expires'])) ||
					!$this->options['htaccess']['enabled']),
				"gzip_level" => round($this->options['gzip']['css_level']),
				"minify" => $this->options['minify']['css'],
				"minify_body" => $this->options['minify']['css_body'],
				"minify_with" => $this->premium > 1 && $this->options['minify']['css_min'] == 2 ?
					'tidy' :
					($this->premium > 1 && $this->options['minify']['css_min'] == 3 ? 'cssmin' :
					($this->options['minify']['css_min'] ? 'basic' : '')),
				"far_future_expires" => $this->options['far_future_expires']['css'] &&
					!$this->options['htaccess']['mod_expires'],
				"far_future_expires_php" => $this->options['far_future_expires']['css'],
				"far_future_expires_rewrite" => $this->options['htaccess']['mod_rewrite'] &&
					$this->options['htaccess']['enabled'] &&
					$this->options['far_future_expires']['css'],
				"far_future_expires_static" => ((!($this->options['htaccess']['mod_rewrite'] ||
						$this->options['htaccess']['mod_expires']) ||
					!$this->options['htaccess']['enabled']) &&
					$this->options['far_future_expires']['css']) || 
					((!($this->options['htaccess']['mod_rewrite'] ||
						$this->options['htaccess']['mod_deflate'] ||
						$this->options['htaccess']['mod_gzip']) ||
					!$this->options['htaccess']['enabled']) &&
					$this->options['gzip']['css']),
				"data_uris" => $this->options['data_uris']['on'],
/* disable mhtml for IE7- under HTTPS */
				"data_uris_mhtml" => $this->options['data_uris']['mhtml'] && !$this->https,
				"data_uris_separate" => $this->premium > 1 && $this->options['data_uris']['separate'] &&
					((in_array($this->ua_mod, $this->ies) &&
							$this->options['data_uris']['mhtml']) ||
						(!in_array($this->ua_mod, $this->ies) &&
							$this->options['data_uris']['on'])),
				"data_uris_domloaded" => $this->options['unobtrusive']['background'] &&
					$this->premium > 1,
				"data_uris_size" => round($this->options['data_uris']['size']),
				"data_uris_mhtml_size" => round($this->options['data_uris']['mhtml_size']),
				"data_uris_exclude" => $this->options['data_uris']['ignore_list'],
				"data_uris_exclude_mhtml" => $this->options['data_uris']['additional_list'],
				"css_sprites" => $this->premium && $this->options['css_sprites']['enabled'],
				"css_sprites_expires_rewrite" => (!($this->options['htaccess']['mod_rewrite'] &&
						$this->options['htaccess']['mod_expires']) ||
					!$this->options['htaccess']['enabled']) &&
					$this->options['far_future_expires']['images'],
				"css_sprites_ignore" => $this->options['css_sprites']['ignore'],
				"css_sprites_exclude" => $this->options['css_sprites']['ignore_list'],
				"truecolor_in_jpeg" => $this->premium > 1 && $this->options['css_sprites']['truecolor_in_jpeg'],
				"aggressive" => $this->premium > 1 && $this->options['css_sprites']['aggressive'],
				"no_ie6" => $this->premium > 1 && $this->options['css_sprites']['no_ie6'],
				"dimensions_limited" => $this->premium ? round($this->options['css_sprites']['dimensions_limited']) : 0,
				"css_sprites_extra_space" => $this->premium && $this->options['css_sprites']['extra_space'],
				"punypng" => $this->premium > 1 ? $this->options['punypng'] : '',
				"css_restore_properties" => $this->options['performance']['restore_properties'] &&
					$this->premium > 1,
				"unobtrusive_body" => false,
				"parallel" => $this->options['parallel']['enabled'],
				"parallel_hosts" => $this->options['parallel']['allowed_list'],
				"external_scripts" => $this->options['external_scripts']['css'],
				"inline_scripts" => $this->options['external_scripts']['css_inline'],
				"external_scripts_exclude" => $this->options['external_scripts']['additional_list'],
				"include_code" => $this->options['external_scripts']['include_code'],
				"remove_list" => $this->premium > 1 ? $this->options['external_scripts']['remove_list_css'] : '',
				"dont_check_file_mtime" => $this->options['performance']['mtime'],
				"file" => $this->premium > 1 ? $this->options['minify']['css_file'] : '',
				"host" => $this->premium ? $this->options['minify']['css_host'] : '',
				"https" => $this->premium > 1 ? $this->options['parallel']['https'] : '',
				"rocket" => $this->options['rocket']['css'] && !$this->options['minify']['css'],
				"reorder" => $this->options['rocket']['reorder']
			),
			"page" => array(
				"cachedir" => $this->options['html_cachedir'],
				"cache_engine" => $this->premium ? $this->options['performance']['cache_engine'] : 0,
				"cache_engine_options" => $this->premium ? $this->options['performance']['cache_engine_options'] : '',
				"cachedir_relative" => str_replace($this->options['document_root'], "/", $this->options['html_cachedir']),
				"installdir" => $webo_cachedir,
				"host" => $this->options['host'],
				"gzip" => $this->options['gzip']['page'] &&
					((!$this->options['htaccess']['mod_gzip'] &&
							!$this->options['htaccess']['mod_deflate']) ||
						!$this->options['htaccess']['enabled']),
				"zlib" => $this->options['gzip']['zlib'],
				"gzip_noie" => $this->options['gzip']['noie'] &&
					$this->premium > 1,
				"gzip_level" => round($this->options['gzip']['page_level']),
				"gzip_cookie" => $this->options['gzip']['cookie'] &&
					$this->premium > 1,
				"minify" => $this->options['minify']['page'],
				"minify_aggressive" => $this->options['minify']['html_one_string'] &&
					$this->premium,
				"remove_comments" => $this->options['minify']['html_comments'] &&
					$this->premium,
				"dont_check_file_mtime" => $this->options['performance']['mtime'],
				"cache_images" => $this->options['far_future_expires']['images'],
				"far_future_expires_rewrite" => (!($this->options['htaccess']['mod_rewrite'] ||
						$this->options['htaccess']['mod_expires']) ||
					!$this->options['htaccess']['enabled']) &&
					$this->options['far_future_expires']['images'],
				"far_future_expires_external" => $this->options['far_future_expires']['external'],
				"clientside_cache" => $this->premium > 1 && $this->options['far_future_expires']['html'],
				"clientside_timeout" => $this->options['far_future_expires']['html_timeout'],
				"cache" => $this->options['html_cache']['enabled'] &&
					$this->premium,
				"cache_timeout" => $this->options['html_cache']['timeout'],
				"cart_timeout" => $this->premium > 1 ? $this->options['html_cache']['timeout_cart'] : $this->options['html_cache']['timeout'],
				"ajax_timeout" => $this->premium > 1 ? $this->options['html_cache']['timeout_ajax'] : $this->options['html_cache']['timeout'],
				"flush" => $this->options['html_cache']['flush_only'] &&
					$this->premium > 1,
				"flush_size" => $this->options['html_cache']['flush_size'],
				"cache_ignore" => $this->premium ? $this->options['html_cache']['ignore_list'] : '',
				"ignore_include" => $this->premium ? $this->options['html_cache']['ignore'] : '',
				"cache_params" => $this->premium > 1 ? $this->options['html_cache']['params'] : '',
				"allowed_user_agents" => $this->premium > 1 ? $this->options['html_cache']['allowed_list'] : '',
				"exclude_cookies" => $this->premium > 1 ? $this->options['html_cache']['additional_list'] : '',
				"parallel" => $this->options['parallel']['enabled'] && !empty($this->options['parallel']['allowed_list']),
				"parallel_regexp" => $this->premium > 1 ? $this->options['parallel']['regexp'] : '',
				"parallel_hosts" => $this->options['parallel']['allowed_list'],
				"parallel_satellites" => $this->options['parallel']['additional'],
				"parallel_satellites_hosts" => $this->options['parallel']['additional_list'],
				"parallel_ignore" => $this->options['parallel']['ignore_list'],
				"parallel_css" => $this->options['parallel']['css'] && !empty($this->options['parallel']['allowed_list']),
				"parallel_javascript" => $this->options['parallel']['javascript'] && !empty($this->options['parallel']['allowed_list']),
				"parallel_ftp" => $this->premium ? $this->options['parallel']['ftp'] : '',
				"parallel_https" => $this->premium > 1 ? $this->options['parallel']['https'] : '',
				"unobtrusive_informers" => $this->options['unobtrusive']['informers'] &&
					($this->premium > 1),
				"unobtrusive_counters" => $this->options['unobtrusive']['counters'] &&
					($this->premium > 1),
				"unobtrusive_ads" => $this->options['unobtrusive']['ads'] &&
					($this->premium > 1),
				"unobtrusive_all" => $this->options['unobtrusive']['all'] &&
					$this->premium,
				"unobtrusive_iframes" => $this->options['unobtrusive']['iframes'] &&
					($this->premium > 1),
				"unobtrusive_onload" => $this->options['unobtrusive']['on'] &&
					($this->premium > 1),
				"unobtrusive_inline" => $this->options['unobtrusive']['on'] == 2 &&
					($this->premium > 1),
				"unobtrusive_configuration" => $this->premium > 1 ? explode(" ", $this->options['unobtrusive']['configuration']) : array(),
				"postload" => $this->premium > 1 ? $this->options['unobtrusive']['postload'] : '',
				"postload_frames" => $this->premium > 1 ? $this->options['unobtrusive']['frames'] : '',
				"footer" => $this->options['footer']['text'],
				"footer_image" => $this->options['footer']['image'],
				"footer_text" => $this->options['footer']['link'],
				"footer_style" => $this->options['footer']['css_code'],
				"spot" => $this->premium ? $this->options['footer']['spot'] : 1,
				"counter" => $this->premium > 1 ? $this->options['footer']['counter'] : '',
				"ab" => $this->options['footer']['ab'] &&
					$this->premium > 1,
				"htaccess_username" => $this->premium > 1 ? $this->options['external_scripts']['user'] : '',
				"htaccess_password" => $this->premium > 1 ? $this->options['external_scripts']['pass'] : '',
				"html_tidy" => $this->options['performance']['plain_string'] &&
					$this->premium,
				"sprites" => $this->premium && $this->options['css_sprites']['html_sprites'],
				"sprites_domloaded" => $this->options['unobtrusive']['background'] &&
					$this->premium > 1,
				"dimensions_limited" => $this->premium ? round($this->options['css_sprites']['html_limit']) : 0,
				"per_page" => $this->premium && $this->options['css_sprites']['html_page'],
				"https_separate" => $this->premium > 1 ? $this->options['performance']['https'] : 0,
				"scale_images" => $this->premium > 1 ? $this->options['performance']['scale'] : 0,
				"scale_restriction" => $this->premium > 1 ? $this->options['performance']['scale_restriction'] : 0,
			),
			"document_root" => $this->options['document_root'],
			"document_root_relative" => str_replace("//", "/", str_replace($this->options['document_root'], "/", $this->options['website_root'])),
			"website_root" => $this->options['website_root'],
			"cache_version" => round($this->options['performance']['cache_version']) &&
				$this->premium > 1,
			"uniform_cache" => $this->options['performance']['uniform_cache'] &&
				$this->premium > 1,
			"plugins" => !empty($this->options['plugins']) &&
				$this->premium > 1 ? explode(" ", $this->options['plugins']) : '',
			"days_to_delete" => $this->premium > 1 ? round($this->options['performance']['delete_old']) : 0,
			"charset" => $this->options['charset'],
			"currency" => $this->premium > 1 ? $this->options['currency'] : '',
			'host' => $this->options['host'],
			"clean_html_cache" => $this->options['html_cache']['cleanup'] &&
				$this->premium > 1 ? $this->options['html_cache']['timeout'] : 0
		);
		$this->lc = $this->options['license'];
/* overwrite other options array that we passed in */
		$this->options = $full_options;
/* some additional checks */
		if ($this->options['page']['parallel_css'] && empty($this->options['css']['host'])) {
			if ($this->options['page']['parallel_hosts']) {
				$hosts = explode(" ", $this->options['page']['parallel_hosts']);
				$this->options['css']['host'] = $hosts[0];
			} else {
				$this->options['page']['parallel_css'] = 0;
			}
		}
		if ($this->options['page']['parallel_javascript'] && empty($this->options['javascript']['host'])) {
			if ($this->options['page']['parallel_hosts']) {
				$hosts = explode(" ", $this->options['page']['parallel_hosts']);
				$this->options['javascript']['host'] = $hosts[0];
			} else {
				$this->options['page']['parallel_javascript'] = 0;
			}
		}
	}

	/**
	* Start saving the output buffer
	*
	**/
	function start () {
		ob_start();
		ob_start();
		ob_implicit_flush(0);
	}

	/**
	* Compress passes content directly
	*
	**/
	function compress ($content) {
		$this->finish($content);
	}

	/**
	* Do work and return output buffer
	*
	**/
	function finish ($content = false) {
/* disable any actions if not active */
		if (empty($this->options['active'])) {
			return $content;
		}
		@ini_set("max_execution_time", 600);
		if ($content === false) {
			$this->content = @ob_get_clean();
/* clear all other buffers */
			while (@ob_end_clean());
		} else {
			$this->content = $content;
		}
/* execute plugin-specific logic, BeforeOptimization event */
		if (is_array($this->options['plugins'])) {
			foreach ($this->options['plugins'] as $plugin) {
				$plugin_file =
					$this->options['css']['installdir'] .
						'plugins/' . $plugin . '.php';
				if (@is_file($plugin_file)) {
					include_once($plugin_file);
					$web_optimizer_plugin = new $plugin;
					$this->content =
						$web_optimizer_plugin->onBeforeOptimization($this->content);
				}
			}
		}
		$skip = 0;
		$ajax = 0;
		if (function_exists('headers_list')) {
			$headers = headers_list();
/* define if Content-Type is text/html and allow it */
			foreach ($headers as $head) {
				$header = strtolower($head);
				if (strpos($header, 'content-type:') !== false || (strpos($header, 'location:') !== false && strpos($header, '-location:') === false)) {
					$skip++;
				}
				if (strpos($header, 'text/html') || strpos($header, 'application/xhtml+xml')) {
					$skip--;
				}
				if (strpos($header, 'application/json')) {
					$skip++;
					$ajax = 1;
				}
				if (strpos($header, 'content-base') !== false) {
					$this->basehref = substr($head, 14);
				}
				if ($this->ua_mod && strpos($header, 'x-ua-compatible') !== false) {
					$this->ua_mod = '.ie' . substr($head, 20);
				}
			}
		}
/* also skip AJAX requests with X-Requested-With: XMLHttpRequest */
		if (!$skip &&
			!empty($_SERVER['HTTP_X_REQUESTED_WITH']) &&
			$_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest') {
				$skip = 1;
				$ajax = 1;
		}
/* also skip some CMS-related parameters */
		if (!$skip && !empty($_GET['no_html'])) {
			$skip = 1;
			$ajax = 1;
		}
/* skip some extensions */
		if (!$skip && !empty($_SERVER['QUERY_STRING'])) {
			$query = explode('.', $_SERVER['QUERY_STRING']);
			$ext = strtolower($query[count($query) - 1]);
			if (in_array($ext, array('pdf', 'doc', 'xls', 'docx', 'xlsx'))) {
				$skip = 1;
			}
		}
/* skip some known cases of non-HTML content */
		if (!$skip) {
/* reduce amount of viewing content, accelerate 'fast check' by 1% */
			$spot = substr($this->content, 0, 200);
			if (strpos($spot, '<methodResponse') !== false ||
				strpos($spot, '<rss') !== false ||
				strpos($spot, '<feed') !== false ||
				strpos($spot, '<urlset') !== false ||
				strpos($spot, '<smf') !== false ||
				strlen($spot) < 200) {
					$skip = 1;
/* mark AJAX requests */
			} elseif (strpos($spot, '{') === 0 || !preg_match("!<h(tml|ead)!is", $spot)) {
				$skip = 1;
				$ajax = 1;
			}
		}
/* enable A/B testing */
		if (!$skip && !empty($this->options['page']['ab']) && !empty($_COOKIE['WSS_DISABLED'])) {
			$this->content = preg_replace("!(<head[^>]*>)!i", "$1" . '<script type="text/javascript">//<![CDATA[' .
				"\n" . 'var _gaq=_gaq||[];_gaq.push(["_setCustomVar",1,"WEBOSiteSpeedUp","0"])' . "\n//]]></script>", $this->content);
			$skip = 1;
		}
/* skip RSS, SMF xml format */
		if (!$skip) {
/* define gzip headers at the end */
			$this->set_gzip_header();
/* Add UA-Compatible support */
			if ($this->ua_mod && strpos($this->content, 'X-UA-Compatible') && !strpos($this->content, 'IE=edge')) {
				$this->ua_mod = '.ie' . preg_replace("!.*<meta[^>]+content=['\"]?IE=([0-9]+).*!is", "$1", $this->content);
			}
/* create DOMready chunk of JavaScript code, is required for different tasks */
			$this->domready_include = $this->domready_include2 = $this->domready_include3 = '';
			if ($this->options['css']['data_uris_separate'] || $this->options['page']['sprites_domloaded'] || $this->joomla_cache || $this->wp_cache || $this->generic_cache) {
				$this->domready_include = '__WSSLOADED=0;function _weboptimizer_load(){if(__WSSLOADED){return}';
				if ($this->options['page']['sprites_domloaded']) {
					$this->domready_include .= '_webo_hsprites();';
				}
				$cart_class = $this->generic_cache ? 'wss_cart' : ($this->joomla_cache ? 'vmCartModule' : 'widget_wp_digi_cart');
				if ($this->options['page']['cache'] && $this->cache_me) {
					$this->domready_include .= 'var g,x=document,f,h,j;if(typeof x.getElementsByClassName!="undefined"){g=x.getElementsByClassName("' . 
					$cart_class .
					'")[0];f=x.getElementsByClassName("wss_cart_qty")[0];h=x.getElementsByClassName("wss_cart2")[0];j=x.getElementsByClassName("wss_cart2_qty")[0]}else{var b=x.getElementsByTagName("*"),c,d=0;while(c=b[d++]){if(c.className){if(/(^|\s)' .
					$cart_class .
					'(\s|$)/.test(c.className)){g=c}if(/(^|\s)wss_cart_qty(\s|$)/.test(c.className)){f=c}if(/(^|\s)wss_cart2(\s|$)/.test(c.className)){h=c}if(/(^|\s)wss_cart2_qty(\s|$)/.test(c.className)){j=c}}}}if(g&&!(f&&(parseInt(f.innerHTML)))&&!(j&&(parseInt(j.innerHTML)))){var a,a1;if(typeof window.localStorage!="undefined"){a=window.localStorage.wss_cart||"";a1=window.localStorage.wss_cart2||"";if(x.cookie.indexOf("WSS_CART=0")!==-1){delete window.localStorage["wss_cart"];delete window.localStorage["wss_cart2"]}}else{var b=x.cookie.split(";"),c,d=0,e;while(c=b[d++]){e=c.indexOf("wss_cart=");if(!e||e==1){a=c.substr(e+11).replace(/@#/g,";")}e=c.indexOf("wss_cart2=");if(!e||e==1){a1=c.substr(e+11).replace(/@#/g,";")}}}if(x.cookie.indexOf("WSS_CART=1")!==-1'.
					($this->wp_cache ? '&&x.location.pathname!="/cart/"' : '') .
					'){if(a&&a!="undefined"){WSS_CART=g.innerHTML=a}if(a1&&a1!="undefined"){WSS_CART2=h.innerHTML=a1}}}';
				}
				$this->domready_include .= '__WSSLOADED=1}(function(){var d=document;if(d.addEventListener){d.addEventListener("DOMContentLoaded",_weboptimizer_load,false)}';
				if (!empty($this->ua_mod) && substr($this->ua_mod, 3, 1) < 8) {
					$this->domready_include .= 'd.write("\x3cscript id=\"_weboptimizer\" defer=\"defer\" src=\"\">\x3c\/script>");(d.getElementById("_weboptimizer")).onreadystatechange=function(){if(this.readyState=="complete"){setTimeout(function(){if(typeof _weboptimizer_load!=="undefined"){_weboptimizer_load()}},0)}};';
				} else {
					$this->domready_include .= 'if(/WebK/i.test(navigator.userAgent)){var wssload=setInterval(function(){if(/loaded|complete/.test(document.readyState)){clearInterval(wssload);if(typeof _weboptimizer_load!=="undefined"){_weboptimizer_load()}}},10)}';
				}
				$this->domready_include .= 'window[/*@cc_on !@*/0?"attachEvent":"addEventListener"](/*@cc_on "on"+@*/"load",_weboptimizer_load,false)}());';
				if ($this->options['page']['cache']) {
/* clean-up all localStorage values */
					if ($this->logged) {
						$this->domready_include2 .= 'if(typeof window.localStorage!="undefined"){window.localStorage.wss_cart="";window.localStorage.wss_cart2=""}else{document.cookie="wss_cart=;path=/;expires="+(new Date(new Date().getTime()+' .
						($this->options['page']['cart_timeout'] * 1000) .
						').toGMTString());document.cookie="wss_cart2=;path=/;expires="+(new Date(new Date().getTime()+' .
						($this->options['page']['cart_timeout'] * 1000) .
						').toGMTString())}';
/* store user-specific values into localStorage */
					} else {
						$this->domready_include2 .= '(function(){var a=window;if(a.parent===a)a[/*@cc_on !@*/0?"attachEvent":"addEventListener"](/*@cc_on "on"+@*/"unload",function(){var a,x=document,y,z,r;if(typeof x.getElementsByClassName!="undefined"){a=x.getElementsByClassName("' .
						$cart_class .
						'")[0]||0;y=x.getElementsByClassName("wss_cart_qty")[0]||0;z=x.getElementsByClassName("wss_cart2")[0]||0;r=x.getElementsByClassName("wss_cart2_qty")[0]||0}else{var b=x.getElementsByTagName("*"),c,d=0;while(c=b[d++]){if(c.className){if(/(^|\s)' .
						$cart_class .
					'(\s|$)/.test(c.className)){a=c}if(/(^|\s)wss_cart_qty(\s|$)/.test(c.className)){y=c}if(/(^|\s)wss_cart2(\s|$)/.test(c.className)){z=c}if(/(^|\s)wss_cart2_qty(\s|$)/.test(c.className)){r=c}}}}y=y||a.getElementsByTagName("b")[0];if(a||z){if(a){a=a.innerHTML.replace(/[\r\n]/g," ").replace(/\s+/g," ").replace(/;">/g,"\">").replace(/&amp;/,"&")}if(z){z=z.innerHTML.replace(/[\r\n]/g," ").replace(/\s+/g," ").replace(/;">/g,"\">").replace(/&amp;/,"&")}if(typeof window.localStorage!="undefined"){window.localStorage.wss_cart=a;window.localStorage.wss_cart2=z}else{document.cookie="wss_cart="+a.replace(/;/g,"@#")+";path=/;expires="+(new Date(new Date().getTime()+' .
						($this->options['page']['cart_timeout'] * 1000) .
						').toGMTString());document.cookie="wss_cart2="+z.replace(/;/g,"@#")+";path=/;expires="+(new Date(new Date().getTime()+' .
						($this->options['page']['cart_timeout'] * 1000) .
						').toGMTString())}document.cookie="WSS_CART="+(((a&&y&&parseInt(y.innerHTML))||(z&&r&&parseInt(r.innerHTML)))?1:0)+";path=/;expires="+(new Date(new Date().getTime()+' .
						($this->options['page']['cart_timeout'] * 1000) .
						').toGMTString())}},false)})();';
						$this->domready_include3 = '(function(){var a=window;if(a.parent===a)a[/*@cc_on !@*/0?"attachEvent":"addEventListener"](/*@cc_on "on"+@*/"unload",function(){var a,x=document,y,z,r;document.cookie="WSS_CART=0;path=/;expires="+(new Date(new Date().getTime()+' .
						($this->options['page']['cart_timeout'] * 1000) .
						').toGMTString())},false)})();';
					}
				}
			}
/* find all files in head to process */
			$this->get_script_array();
/* Run the functions specified in options */
			if (is_array($this->options)) {
				foreach ($this->options as $func => $option) {
					if (method_exists($this, $func)) {
						if (!empty($option['gzip']) ||
							!empty($option['minify']) ||
							!empty($option['far_future_expires']) ||
							!empty($option['parallel']) ||
							!empty($option['unobtrusive_onload']) ||
							!empty($option['unobtrusive_all']) ||
							!empty($option['unobtrusive_ads']) ||
							!empty($option['unobtrusive_counters']) ||
							!empty($option['unobtrusive_informers']) ||
							!empty($option['unobtrusive_iframes']) ||
							!empty($option['postload']) ||
							!empty($option['postload_frames']) ||
							!empty($option['cache']) ||
							!empty($option['sprites']) ||
							!empty($option['counter']) ||
							!empty($option['scale_images']) ||
							!empty($option['ab']) ||
							!empty($this->domready_include)) {
								if (!empty($this->web_optimizer_stage)) {
									$this->write_progress($this->web_optimizer_stage++);
								}
								$this->$func($option, $func);
						}
					}
					if ($func == 'page') {
						$this->clear_trash();
					}
				}
			}
			if (!empty($this->web_optimizer_stage)) {
				$this->write_progress($this->web_optimizer_stage);
/* redirect to installation page if chained optimization if finished */
				if ($this->web_optimizer_stage > 85) {
					$this->write_progress(97);
					@header('Location: http://' .
						$this->host .
						str_replace($this->options['document_root'], '/', realpath(dirname(__FILE__) . '/../')) .
						'/index.php?page=install_stage_3&Submit=1&web_optimizer_stage=97&wss__password=' .
						$this->password);
/* else redirect to the next stage */
				} else {
					@header('Location: ' . $this->chained_redirect . '?web_optimizer_stage=' . 
						$this->web_optimizer_stage .
						'&password=' .
						$this->password .
						'&web_optimizer_debug=1');
				}
				$this->di();
			}
		}
		if ($ajax && $this->options['page']['ajax_timeout']) {
			$this->options['page']['cache_timeout'] = $this->options['page']['ajax_timeout'];
			$this->cache_generic(1);
		}
/* Return content to requestor */
		if ($content) {
			return $this->content;
/* or echo content to the browser */
		} else {
/* HTTP/1.0 needs Content-Length */
			if (($this->encoding || empty($this->gzip_set)) && (empty($_SERVER['SERVER_PROTOCOL']) || $_SERVER['SERVER_PROTOCOL'] == 'HTTP/1.0')) {
				@header('Content-Length: ' . strlen($this->content));
			}
			echo $this->content;
/* It's obvious to send anything right after gzipped content */
			if (!empty($this->encoding)) {
				$this->di();
			}
		}
	}

	/**
	* GZIP and minify the javascript as required
	*
	**/
	function javascript ($options,$type) {
/* prepare list of files to process */
		$script_files = array();
		foreach ($this->initial_files as $file) {
			if (!empty($file['tag']) && $file['tag'] == 'script') {
				$script_files[] = $file;
			}
		}
		if (!empty($options['minify']) && !empty($script_files)) {
			$this->content = $this->do_compress(
				array(
					'cachedir' => $options['cachedir'],
					'cachedir_relative' => $options['cachedir_relative'],
					'installdir' => $options['installdir'],
					'host' => $options['host'],
					'tag' => 'script',
					'type' => 'text/javascript',
					'ext' => 'js',
					'src' => 'src',
					'self_close' => 0,
					'gzip' => $options['gzip'],
					'gzip_level' => $options['gzip_level'],
					'minify' => $options['minify'],
					'minify_body' => $options['minify_body'],
					'minify_with' => $options['minify_with'],
					'minify_try' => $options['minify_try'],
					'minify_exclude' => $options['minify_exclude'],
					'remove_duplicates' => $options['remove_duplicates'],
					'far_future_expires' => $options['far_future_expires'],
					'far_future_expires_php' => $options['far_future_expires_php'],
					'far_future_expires_rewrite' => $options['far_future_expires_rewrite'],
					'header' => $type,
					'css_sprites' => 0,
					'css_sprites_exclude' => 0,
					'parallel' => 0,
					'aggressive' => 0,
					'no_ie6' => 0,
					'dimensions_limited' => 0,
					'css_sprites_extra_space' => 0,
					'data_uris' => 0,
					'mhtml' => 0,
					'unobtrusive_body' => $options['unobtrusive_body'],
					'external_scripts' => $options['external_scripts'],
					'inline_scripts' => $options['inline_scripts'],
					'inline_scripts_body' => $options['inline_scripts_body'],
					'external_scripts_head_end' => $options['external_scripts_head_end'],
					'external_scripts_exclude' => $options['external_scripts_exclude'],
					'remove_list' => $options['remove_list'],
					'dont_check_file_mtime' => $options['dont_check_file_mtime'],
					'file' => $options['file'],
					'https' => $options['https'],
					'rocket' => $options['rocket'],
					'rocket_external' => $options['rocket_external'],
					'reorder' => $options['reorder']
				),
				$this->content,
				$script_files
			);
		}
	}

	/**
	* GZIP and minify the CSS as required
	*
	**/
	function css ($options, $type) {
/* prepare list of files to process */
		$link_files = array();
		foreach ($this->initial_files as $file) {
			if (!empty($file['tag']) && $file['tag'] == 'link') {
				$link_files[] = $file;
			}
		}
		if (!empty($options['minify']) && !empty($link_files)) {
/* Compress separately for each media type*/
			$this->content = $this->do_compress(
				array(
					'cachedir' => $options['cachedir'],
					'cachedir_relative' => $options['cachedir_relative'],
					'installdir' => $options['installdir'],
					'host' => $options['host'],
					'tag' => 'link',
					'type' => 'text/css',
					'ext' => 'css',
					'src' => 'href',
					'rel' => 'stylesheet',
					'data_uris' => $options['data_uris'],
					'mhtml' => $options['data_uris_mhtml'],
					'data_uris_separate' => $options['data_uris_separate'],
					'data_uris_domloaded' => $options['data_uris_domloaded'],
					'data_uris_size' => $options['data_uris_size'],
					'data_uris_exclude' => $options['data_uris_exclude'],
					'mhtml' => $options['data_uris_mhtml'],
					'mhtml_size' => $options['data_uris_mhtml_size'],
					'mhtml_exclude' => $options['data_uris_exclude_mhtml'],
					'css_sprites' => $options['css_sprites'],
					'css_sprites_ignore' => $options['css_sprites_ignore'],
					'css_sprites_exclude' => $options['css_sprites_exclude'],
					'truecolor_in_jpeg' => $options['truecolor_in_jpeg'],
					'aggressive' => $options['aggressive'],
					'no_ie6' => $options['no_ie6'],
					'dimensions_limited' => $options['dimensions_limited'],
					'css_sprites_extra_space' => $options['css_sprites_extra_space'],
					'css_sprites_expires_rewrite' => $options['css_sprites_expires_rewrite'],
					'punypng' => $options['punypng'],
					'css_restore_properties' => $options['css_restore_properties'],
					'self_close' => 1,
					'gzip' => $options['gzip'],
					'gzip_level' => $options['gzip_level'],
					'minify' => $options['minify'],
					'minify_body' => $options['minify_body'],
					'minify_with' => $options['minify_with'],
					'far_future_expires' => $options['far_future_expires'],
					'far_future_expires_php' => $options['far_future_expires_php'],
					'far_future_expires_rewrite' => $options['far_future_expires_rewrite'],
					'header' => $type,
					'unobtrusive_body' => $options['unobtrusive_body'],
					'parallel' => $options['parallel'],
					'parallel_hosts' => $options['parallel_hosts'],
					'external_scripts' => $options['external_scripts'],
					'inline_scripts' => $options['inline_scripts'],
					'external_scripts_exclude' => $options['external_scripts_exclude'],
					'include_code' => $options['include_code'],
					'remove_list' => $options['remove_list'],
					'dont_check_file_mtime' => $options['dont_check_file_mtime'],
					'file' => $options['file'],
					'https' => $options['https'],
					'rocket' => $options['rocket'],
					'rocket_external' => $options['rocket'],
					'reorder' => $options['reorder']
				),
				$this->content,
				$link_files
			);
		}
	}

	/**
	* GZIP and minify the page itself as required
	*…