private $html_head = ''; // The html info prepend to
private static $_var_i = 0;
private $_var_preserve_js = array();
private $_request_url;
/**
* Constructor
* @since 4.0
*/
public function __construct()
{
Debug2::debug('[Optm] init');
$this->__optimizer = $this->cls('Optimizer');
}
/**
* Init optimizer
*
* @since 3.0
* @access protected
*/
public function init()
{
$this->cfg_css_async = defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_CSS_ASYNC);
if ($this->cfg_css_async) {
if (!$this->conf(self::O_API_KEY)) {
Debug2::debug('[Optm] ❌ CCSS set to OFF due to missing domain key');
$this->cfg_css_async = false;
}
if ((defined('LITESPEED_GUEST_OPTM') || ($this->conf(self::O_OPTM_UCSS) && $this->conf(self::O_OPTM_CSS_COMB))) && $this->conf(self::O_OPTM_UCSS_INLINE)) {
Debug2::debug('[Optm] ❌ CCSS set to OFF due to UCSS Inline');
$this->cfg_css_async = false;
}
}
$this->cfg_js_defer = $this->conf(self::O_OPTM_JS_DEFER);
if (defined('LITESPEED_GUEST_OPTM')) {
$this->cfg_js_defer = 2;
}
if ($this->cfg_js_defer == 2) {
add_filter(
'litespeed_optm_cssjs',
function ($con, $file_type) {
if ($file_type == 'js') {
$con = str_replace('DOMContentLoaded', 'DOMContentLiteSpeedLoaded', $con);
// $con = str_replace( 'addEventListener("load"', 'addEventListener("litespeedLoad"', $con );
}
return $con;
},
20,
2
);
}
// To remove emoji from WP
if ($this->conf(self::O_OPTM_EMOJI_RM)) {
$this->_emoji_rm();
}
if ($this->conf(self::O_OPTM_QS_RM)) {
add_filter('style_loader_src', array($this, 'remove_query_strings'), 999);
add_filter('script_loader_src', array($this, 'remove_query_strings'), 999);
}
// GM JS exclude @since 4.1
if (defined('LITESPEED_GUEST_OPTM')) {
$this->cfg_js_defer_exc = apply_filters('litespeed_optm_gm_js_exc', $this->conf(self::O_OPTM_GM_JS_EXC));
} else {
/**
* Exclude js from deferred setting
* @since 1.5
*/
if ($this->cfg_js_defer) {
add_filter('litespeed_optm_js_defer_exc', array($this->cls('Data'), 'load_js_defer_exc'));
$this->cfg_js_defer_exc = apply_filters('litespeed_optm_js_defer_exc', $this->conf(self::O_OPTM_JS_DEFER_EXC));
$this->cfg_js_delay_inc = apply_filters('litespeed_optm_js_delay_inc', $this->conf(self::O_OPTM_JS_DELAY_INC));
}
}
/**
* Add vary filter for Role Excludes
* @since 1.6
*/
add_filter('litespeed_vary', array($this, 'vary_add_role_exclude'));
/**
* Prefetch DNS
* @since 1.7.1
*/
$this->_dns_prefetch_init();
/**
* Preconnect
* @since 5.6.1
*/
$this->_dns_preconnect_init();
add_filter('litespeed_buffer_finalize', array($this, 'finalize'), 20);
}
/**
* Exclude role from optimization filter
*
* @since 1.6
* @access public
*/
public function vary_add_role_exclude($vary)
{
if ($this->cls('Conf')->in_optm_exc_roles()) {
$vary['role_exclude_optm'] = 1;
}
return $vary;
}
/**
* Remove emoji from WP
*
* @since 1.4
* @since 2.9.8 Changed to private
* @access private
*/
private function _emoji_rm()
{
remove_action('wp_head', 'print_emoji_detection_script', 7);
remove_action('admin_print_scripts', 'print_emoji_detection_script');
remove_filter('the_content_feed', 'wp_staticize_emoji');
remove_filter('comment_text_rss', 'wp_staticize_emoji');
/**
* Added for better result
* @since 1.6.2.1
*/
remove_action('wp_print_styles', 'print_emoji_styles');
remove_action('admin_print_styles', 'print_emoji_styles');
remove_filter('wp_mail', 'wp_staticize_emoji_for_email');
}
/**
* Delete file-based cache folder
*
* @since 2.1
* @access public
*/
public function rm_cache_folder($subsite_id = false)
{
if ($subsite_id) {
file_exists(LITESPEED_STATIC_DIR . '/css/' . $subsite_id) && File::rrmdir(LITESPEED_STATIC_DIR . '/css/' . $subsite_id);
file_exists(LITESPEED_STATIC_DIR . '/js/' . $subsite_id) && File::rrmdir(LITESPEED_STATIC_DIR . '/js/' . $subsite_id);
return;
}
file_exists(LITESPEED_STATIC_DIR . '/css') && File::rrmdir(LITESPEED_STATIC_DIR . '/css');
file_exists(LITESPEED_STATIC_DIR . '/js') && File::rrmdir(LITESPEED_STATIC_DIR . '/js');
}
/**
* Remove QS
*
* @since 1.3
* @access public
*/
public function remove_query_strings($src)
{
if (strpos($src, '_litespeed_rm_qs=0') || strpos($src, '/recaptcha')) {
return $src;
}
if (!Utility::is_internal_file($src)) {
return $src;
}
if (strpos($src, '.js?') !== false || strpos($src, '.css?') !== false) {
$src = preg_replace('/\?.*/', '', $src);
}
return $src;
}
/**
* Run optimize process
* NOTE: As this is after cache finalized, can NOT set any cache control anymore
*
* @since 1.2.2
* @access public
* @return string The content that is after optimization
*/
public function finalize($content)
{
if (defined('LITESPEED_NO_PAGEOPTM')) {
Debug2::debug2('[Optm] bypass: NO_PAGEOPTM const');
return $content;
}
if (!defined('LITESPEED_IS_HTML')) {
Debug2::debug('[Optm] bypass: Not frontend HTML type');
return $content;
}
if (!defined('LITESPEED_GUEST_OPTM')) {
if (!Control::is_cacheable()) {
Debug2::debug('[Optm] bypass: Not cacheable');
return $content;
}
// Check if hit URI excludes
add_filter('litespeed_optm_uri_exc', array($this->cls('Data'), 'load_optm_uri_exc'));
$excludes = apply_filters('litespeed_optm_uri_exc', $this->conf(self::O_OPTM_EXC));
$result = Utility::str_hit_array($_SERVER['REQUEST_URI'], $excludes);
if ($result) {
Debug2::debug('[Optm] bypass: hit URI Excludes setting: ' . $result);
return $content;
}
}
Debug2::debug('[Optm] start');
$this->content_ori = $this->content = $content;
$this->_optimize();
return $this->content;
}
/**
* Optimize css src
*
* @since 1.2.2
* @access private
*/
private function _optimize()
{
global $wp;
$this->_request_url = home_url($wp->request);
$this->cfg_css_min = defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_CSS_MIN);
$this->cfg_css_comb = defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_CSS_COMB);
$this->cfg_js_min = defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_JS_MIN);
$this->cfg_js_comb = defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_JS_COMB);
$this->cfg_ggfonts_rm = defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_GGFONTS_RM);
$this->cfg_ggfonts_async = !defined('LITESPEED_GUEST_OPTM') && $this->conf(self::O_OPTM_GGFONTS_ASYNC); // forced rm already
$this->_conf_css_font_display = !defined('LITESPEED_GUEST_OPTM') && $this->conf(self::O_OPTM_CSS_FONT_DISPLAY);
if (!$this->cls('Router')->can_optm()) {
Debug2::debug('[Optm] bypass: admin/feed/preview');
return;
}
if ($this->cfg_css_async) {
$this->_ccss = $this->cls('CSS')->prepare_ccss();
if (!$this->_ccss) {
Debug2::debug('[Optm] ❌ CCSS set to OFF due to CCSS not generated yet');
$this->cfg_css_async = false;
} elseif (strpos($this->_ccss, '' . $this->html_head;
}
// Check if there is any critical css rules setting
if ($this->cfg_css_async && $this->_ccss) {
$this->html_head = $this->_ccss . $this->html_head;
}
// Replace html head part
$this->html_head = apply_filters('litespeed_optm_html_head', $this->html_head);
if ($this->html_head) {
if (apply_filters('litespeed_optm_html_after_head', false)) {
$this->content = str_replace('', $this->html_head . '', $this->content);
} else {
// Put header content to be after charset
if (strpos($this->content, 'content = preg_replace('#]*)>#isU', '' . $this->html_head, $this->content, 1);
} else {
$this->content = preg_replace('#]*)>#isU', '' . $this->html_head, $this->content, 1);
}
}
}
// Replace html foot part
$this->html_foot = apply_filters('litespeed_optm_html_foot', $this->html_foot);
if ($this->html_foot) {
$this->content = str_replace('', $this->html_foot . '', $this->content);
}
// Drop noscript if enabled
if ($this->conf(self::O_OPTM_NOSCRIPT_RM)) {
// $this->content = preg_replace( '#