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• /home/zeestwma/richards.../wp-conte.../plugins/litespee.../src
• File: optimize.cls.php
<?php
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/**
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* The optimize class.
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*
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* @since 1.2.2
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*/
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namespace LiteSpeed;
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defined('WPINC') || exit();
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class Optimize extends Base
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{
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const LIB_FILE_CSS_ASYNC = 'assets/js/css_async.min.js';
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const LIB_FILE_WEBFONTLOADER = 'assets/js/webfontloader.min.js';
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const LIB_FILE_JS_DELAY = 'assets/js/js_delay.min.js';
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const ITEM_TIMESTAMP_PURGE_CSS = 'timestamp_purge_css';
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private $content;
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private $content_ori;
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private $cfg_css_min;
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private $cfg_css_comb;
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private $cfg_js_min;
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private $cfg_js_comb;
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private $cfg_css_async;
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private $cfg_js_delay_inc = array();
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private $cfg_js_defer;
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private $cfg_js_defer_exc = false;
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private $cfg_ggfonts_async;
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private $_conf_css_font_display;
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private $cfg_ggfonts_rm;
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private $dns_prefetch;
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private $dns_preconnect;
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private $_ggfonts_urls = array();
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private $_ccss;
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private $_ucss = false;
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private $__optimizer;
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private $html_foot = ''; // The html info append to <body>
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private $html_head = ''; // The html info prepend to <body>
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private static $_var_i = 0;
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private $_var_preserve_js = array();
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private $_request_url;
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/**
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* Constructor
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* @since 4.0
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*/
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public function __construct()
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{
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Debug2::debug('[Optm] init');
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$this->__optimizer = $this->cls('Optimizer');
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}
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/**
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* Init optimizer
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*
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* @since 3.0
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* @access protected
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*/
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public function init()
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{
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$this->cfg_css_async = defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_CSS_ASYNC);
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if ($this->cfg_css_async) {
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if (!$this->conf(self::O_API_KEY)) {
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Debug2::debug('[Optm] ❌ CCSS set to OFF due to missing domain key');
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$this->cfg_css_async = false;
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}
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if ((defined('LITESPEED_GUEST_OPTM') || ($this->conf(self::O_OPTM_UCSS) && $this->conf(self::O_OPTM_CSS_COMB))) && $this->conf(self::O_OPTM_UCSS_INLINE)) {
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Debug2::debug('[Optm] ❌ CCSS set to OFF due to UCSS Inline');
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$this->cfg_css_async = false;
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}
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}
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$this->cfg_js_defer = $this->conf(self::O_OPTM_JS_DEFER);
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if (defined('LITESPEED_GUEST_OPTM')) {
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$this->cfg_js_defer = 2;
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}
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if ($this->cfg_js_defer == 2) {
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add_filter(
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'litespeed_optm_cssjs',
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function ($con, $file_type) {
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if ($file_type == 'js') {
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$con = str_replace('DOMContentLoaded', 'DOMContentLiteSpeedLoaded', $con);
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// $con = str_replace( 'addEventListener("load"', 'addEventListener("litespeedLoad"', $con );
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}
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return $con;
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},
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20,
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2
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);
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}
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// To remove emoji from WP
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if ($this->conf(self::O_OPTM_EMOJI_RM)) {
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$this->_emoji_rm();
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}
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if ($this->conf(self::O_OPTM_QS_RM)) {
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add_filter('style_loader_src', array($this, 'remove_query_strings'), 999);
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add_filter('script_loader_src', array($this, 'remove_query_strings'), 999);
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}
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// GM JS exclude @since 4.1
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if (defined('LITESPEED_GUEST_OPTM')) {
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$this->cfg_js_defer_exc = apply_filters('litespeed_optm_gm_js_exc', $this->conf(self::O_OPTM_GM_JS_EXC));
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} else {
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/**
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* Exclude js from deferred setting
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* @since 1.5
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*/
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if ($this->cfg_js_defer) {
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add_filter('litespeed_optm_js_defer_exc', array($this->cls('Data'), 'load_js_defer_exc'));
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$this->cfg_js_defer_exc = apply_filters('litespeed_optm_js_defer_exc', $this->conf(self::O_OPTM_JS_DEFER_EXC));
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$this->cfg_js_delay_inc = apply_filters('litespeed_optm_js_delay_inc', $this->conf(self::O_OPTM_JS_DELAY_INC));
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}
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}
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/**
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* Add vary filter for Role Excludes
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* @since 1.6
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*/
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add_filter('litespeed_vary', array($this, 'vary_add_role_exclude'));
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/**
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* Prefetch DNS
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* @since 1.7.1
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*/
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$this->_dns_prefetch_init();
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/**
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* Preconnect
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* @since 5.6.1
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*/
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$this->_dns_preconnect_init();
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add_filter('litespeed_buffer_finalize', array($this, 'finalize'), 20);
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}
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/**
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* Exclude role from optimization filter
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*
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* @since 1.6
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* @access public
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*/
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public function vary_add_role_exclude($vary)
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{
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if ($this->cls('Conf')->in_optm_exc_roles()) {
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$vary['role_exclude_optm'] = 1;
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}
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return $vary;
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}
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/**
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* Remove emoji from WP
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*
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* @since 1.4
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* @since 2.9.8 Changed to private
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* @access private
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*/
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private function _emoji_rm()
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{
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remove_action('wp_head', 'print_emoji_detection_script', 7);
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remove_action('admin_print_scripts', 'print_emoji_detection_script');
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remove_filter('the_content_feed', 'wp_staticize_emoji');
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remove_filter('comment_text_rss', 'wp_staticize_emoji');
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/**
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* Added for better result
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* @since 1.6.2.1
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*/
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remove_action('wp_print_styles', 'print_emoji_styles');
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remove_action('admin_print_styles', 'print_emoji_styles');
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remove_filter('wp_mail', 'wp_staticize_emoji_for_email');
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}
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/**
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* Delete file-based cache folder
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*
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* @since 2.1
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* @access public
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*/
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public function rm_cache_folder($subsite_id = false)
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{
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if ($subsite_id) {
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file_exists(LITESPEED_STATIC_DIR . '/css/' . $subsite_id) && File::rrmdir(LITESPEED_STATIC_DIR . '/css/' . $subsite_id);
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file_exists(LITESPEED_STATIC_DIR . '/js/' . $subsite_id) && File::rrmdir(LITESPEED_STATIC_DIR . '/js/' . $subsite_id);
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return;
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}
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file_exists(LITESPEED_STATIC_DIR . '/css') && File::rrmdir(LITESPEED_STATIC_DIR . '/css');
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file_exists(LITESPEED_STATIC_DIR . '/js') && File::rrmdir(LITESPEED_STATIC_DIR . '/js');
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}
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/**
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* Remove QS
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*
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* @since 1.3
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* @access public
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*/
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public function remove_query_strings($src)
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{
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if (strpos($src, '_litespeed_rm_qs=0') || strpos($src, '/recaptcha')) {
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return $src;
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}
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if (!Utility::is_internal_file($src)) {
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return $src;
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}
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if (strpos($src, '.js?') !== false || strpos($src, '.css?') !== false) {
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$src = preg_replace('/\?.*/', '', $src);
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}
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return $src;
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}
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/**
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* Run optimize process
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* NOTE: As this is after cache finalized, can NOT set any cache control anymore
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*
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* @since 1.2.2
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* @access public
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* @return string The content that is after optimization
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*/
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public function finalize($content)
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{
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if (defined('LITESPEED_NO_PAGEOPTM')) {
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Debug2::debug2('[Optm] bypass: NO_PAGEOPTM const');
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return $content;
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}
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if (!defined('LITESPEED_IS_HTML')) {
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Debug2::debug('[Optm] bypass: Not frontend HTML type');
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return $content;
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}
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if (!defined('LITESPEED_GUEST_OPTM')) {
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if (!Control::is_cacheable()) {
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Debug2::debug('[Optm] bypass: Not cacheable');
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return $content;
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}
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// Check if hit URI excludes
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add_filter('litespeed_optm_uri_exc', array($this->cls('Data'), 'load_optm_uri_exc'));
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$excludes = apply_filters('litespeed_optm_uri_exc', $this->conf(self::O_OPTM_EXC));
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$result = Utility::str_hit_array($_SERVER['REQUEST_URI'], $excludes);
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if ($result) {
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Debug2::debug('[Optm] bypass: hit URI Excludes setting: ' . $result);
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return $content;
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}
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}
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Debug2::debug('[Optm] start');
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$this->content_ori = $this->content = $content;
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$this->_optimize();
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return $this->content;
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}
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/**
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* Optimize css src
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*
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* @since 1.2.2
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* @access private
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*/
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private function _optimize()
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{
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global $wp;
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$this->_request_url = home_url($wp->request);
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$this->cfg_css_min = defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_CSS_MIN);
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$this->cfg_css_comb = defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_CSS_COMB);
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$this->cfg_js_min = defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_JS_MIN);
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$this->cfg_js_comb = defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_JS_COMB);
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$this->cfg_ggfonts_rm = defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_GGFONTS_RM);
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$this->cfg_ggfonts_async = !defined('LITESPEED_GUEST_OPTM') && $this->conf(self::O_OPTM_GGFONTS_ASYNC); // forced rm already
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$this->_conf_css_font_display = !defined('LITESPEED_GUEST_OPTM') && $this->conf(self::O_OPTM_CSS_FONT_DISPLAY);
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if (!$this->cls('Router')->can_optm()) {
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Debug2::debug('[Optm] bypass: admin/feed/preview');
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return;
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}
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if ($this->cfg_css_async) {
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$this->_ccss = $this->cls('CSS')->prepare_ccss();
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if (!$this->_ccss) {
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Debug2::debug('[Optm] ❌ CCSS set to OFF due to CCSS not generated yet');
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$this->cfg_css_async = false;
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} elseif (strpos($this->_ccss, '<style id="litespeed-ccss" data-error') === 0) {
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Debug2::debug('[Optm] ❌ CCSS set to OFF due to CCSS failed to generate');
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$this->cfg_css_async = false;
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}
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}
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do_action('litespeed_optm');
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// Parse css from content
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$src_list = false;
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if ($this->cfg_css_min || $this->cfg_css_comb || $this->cfg_ggfonts_rm || $this->cfg_css_async || $this->cfg_ggfonts_async || $this->_conf_css_font_display) {
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add_filter('litespeed_optimize_css_excludes', array($this->cls('Data'), 'load_css_exc'));
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list($src_list, $html_list) = $this->_parse_css();
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}
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// css optimizer
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if ($this->cfg_css_min || $this->cfg_css_comb) {
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if ($src_list) {
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// IF combine
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if ($this->cfg_css_comb) {
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// Check if has inline UCSS enabled or not
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if ((defined('LITESPEED_GUEST_OPTM') || $this->conf(self::O_OPTM_UCSS)) && $this->conf(self::O_OPTM_UCSS_INLINE)) {
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$filename = $this->cls('UCSS')->load($this->_request_url, true);
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if ($filename) {
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$filepath_prefix = $this->_build_filepath_prefix('ucss');
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$this->_ucss = File::read(LITESPEED_STATIC_DIR . $filepath_prefix . $filename);
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// Drop all css
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$this->content = str_replace($html_list, '', $this->content);
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}
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}
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if (!$this->_ucss) {
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$url = $this->_build_hash_url($src_list);
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if ($url) {
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// Handle css async load
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if ($this->cfg_css_async) {
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$this->html_head .=
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'<link rel="preload" data-asynced="1" data-optimized="2" as="style" onload="this.onload=null;this.rel=\'stylesheet\'" href="' . $url . '" />'; // todo: How to use " in attr wrapper "
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} else {
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$this->html_head .= '<link data-optimized="2" rel="stylesheet" href="' . $url . '" />'; // use 2 as combined
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}
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// Move all css to top
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$this->content = str_replace($html_list, '', $this->content);
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}
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}
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}
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// Only minify
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elseif ($this->cfg_css_min) {
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// will handle async css load inside
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$this->_src_queue_handler($src_list, $html_list);
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}
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// Only HTTP2 push
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else {
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foreach ($src_list as $src_info) {
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if (!empty($src_info['inl'])) {
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continue;
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}
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}
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}
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}
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}
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[360] Fix | Delete
// Handle css lazy load if not handled async loaded yet
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if ($this->cfg_css_async && !$this->cfg_css_min && !$this->cfg_css_comb) {
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// async html
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$html_list_async = $this->_async_css_list($html_list, $src_list);
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// Replace async css
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$this->content = str_replace($html_list, $html_list_async, $this->content);
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}
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// Parse js from buffer as needed
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$src_list = false;
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if ($this->cfg_js_min || $this->cfg_js_comb || $this->cfg_js_defer || $this->cfg_js_delay_inc) {
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add_filter('litespeed_optimize_js_excludes', array($this->cls('Data'), 'load_js_exc'));
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list($src_list, $html_list) = $this->_parse_js();
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}
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[376] Fix | Delete
// js optimizer
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if ($src_list) {
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// IF combine
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if ($this->cfg_js_comb) {
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$url = $this->_build_hash_url($src_list, 'js');
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if ($url) {
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$this->html_foot .= $this->_build_js_tag($url);
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// Will move all JS to bottom combined one
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$this->content = str_replace($html_list, '', $this->content);
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}
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}
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// Only minify
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elseif ($this->cfg_js_min) {
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// Will handle js defer inside
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$this->_src_queue_handler($src_list, $html_list, 'js');
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}
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// Only HTTP2 push and Defer
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else {
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foreach ($src_list as $k => $src_info) {
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// Inline JS
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if (!empty($src_info['inl'])) {
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if ($this->cfg_js_defer) {
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$attrs = !empty($src_info['attrs']) ? $src_info['attrs'] : '';
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$deferred = $this->_js_inline_defer($src_info['src'], $attrs);
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if ($deferred) {
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$this->content = str_replace($html_list[$k], $deferred, $this->content);
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}
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}
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}
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// JS files
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else {
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if ($this->cfg_js_defer) {
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$deferred = $this->_js_defer($html_list[$k], $src_info['src']);
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if ($deferred) {
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$this->content = str_replace($html_list[$k], $deferred, $this->content);
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}
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} elseif ($this->cfg_js_delay_inc) {
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$deferred = $this->_js_delay($html_list[$k], $src_info['src']);
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if ($deferred) {
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$this->content = str_replace($html_list[$k], $deferred, $this->content);
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}
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}
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}
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}
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}
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}
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[424] Fix | Delete
// Append JS inline var for preserved ESI
[425] Fix | Delete
// Shouldn't give any optm (defer/delay) @since 4.4
[426] Fix | Delete
if ($this->_var_preserve_js) {
[427] Fix | Delete
$this->html_head .= '<script>var ' . implode(',', $this->_var_preserve_js) . ';</script>';
[428] Fix | Delete
Debug2::debug2('[Optm] Inline JS defer vars', $this->_var_preserve_js);
[429] Fix | Delete
}
[430] Fix | Delete
[431] Fix | Delete
// Append async compatibility lib to head
[432] Fix | Delete
if ($this->cfg_css_async) {
[433] Fix | Delete
// Inline css async lib
[434] Fix | Delete
if ($this->conf(self::O_OPTM_CSS_ASYNC_INLINE)) {
[435] Fix | Delete
$this->html_head .= $this->_build_js_inline(File::read(LSCWP_DIR . self::LIB_FILE_CSS_ASYNC), true);
[436] Fix | Delete
} else {
[437] Fix | Delete
$css_async_lib_url = LSWCP_PLUGIN_URL . self::LIB_FILE_CSS_ASYNC;
[438] Fix | Delete
$this->html_head .= $this->_build_js_tag($css_async_lib_url, 'litespeed-css-async-lib'); // Don't exclude it from defer for now
[439] Fix | Delete
}
[440] Fix | Delete
}
[441] Fix | Delete
[442] Fix | Delete
/**
[443] Fix | Delete
* Handle google fonts async
[444] Fix | Delete
* This will result in a JS snippet in head, so need to put it in the end to avoid being replaced by JS parser
[445] Fix | Delete
*/
[446] Fix | Delete
$this->_async_ggfonts();
[447] Fix | Delete
[448] Fix | Delete
/**
[449] Fix | Delete
* Font display optm
[450] Fix | Delete
* @since 3.0
[451] Fix | Delete
*/
[452] Fix | Delete
$this->_font_optm();
[453] Fix | Delete
[454] Fix | Delete
// Inject JS Delay lib
[455] Fix | Delete
$this->_maybe_js_delay();
[456] Fix | Delete
[457] Fix | Delete
/**
[458] Fix | Delete
* HTML Lazyload
[459] Fix | Delete
*/
[460] Fix | Delete
if ($this->conf(self::O_OPTM_HTML_LAZY)) {
[461] Fix | Delete
$this->html_head = $this->cls('CSS')->prepare_html_lazy() . $this->html_head;
[462] Fix | Delete
}
[463] Fix | Delete
[464] Fix | Delete
// Maybe prepend inline UCSS
[465] Fix | Delete
if ($this->_ucss) {
[466] Fix | Delete
$this->html_head = '<style id="litespeed-ucss">' . $this->_ucss . '</style>' . $this->html_head;
[467] Fix | Delete
}
[468] Fix | Delete
[469] Fix | Delete
// Check if there is any critical css rules setting
[470] Fix | Delete
if ($this->cfg_css_async && $this->_ccss) {
[471] Fix | Delete
$this->html_head = $this->_ccss . $this->html_head;
[472] Fix | Delete
}
[473] Fix | Delete
[474] Fix | Delete
// Replace html head part
[475] Fix | Delete
$this->html_head = apply_filters('litespeed_optm_html_head', $this->html_head);
[476] Fix | Delete
if ($this->html_head) {
[477] Fix | Delete
if (apply_filters('litespeed_optm_html_after_head', false)) {
[478] Fix | Delete
$this->content = str_replace('</head>', $this->html_head . '</head>', $this->content);
[479] Fix | Delete
} else {
[480] Fix | Delete
// Put header content to be after charset
[481] Fix | Delete
if (strpos($this->content, '<meta charset') !== false) {
[482] Fix | Delete
$this->content = preg_replace('#<meta charset([^>]*)>#isU', '<meta charset$1>' . $this->html_head, $this->content, 1);
[483] Fix | Delete
} else {
[484] Fix | Delete
$this->content = preg_replace('#<head([^>]*)>#isU', '<head$1>' . $this->html_head, $this->content, 1);
[485] Fix | Delete
}
[486] Fix | Delete
}
[487] Fix | Delete
}
[488] Fix | Delete
[489] Fix | Delete
// Replace html foot part
[490] Fix | Delete
$this->html_foot = apply_filters('litespeed_optm_html_foot', $this->html_foot);
[491] Fix | Delete
if ($this->html_foot) {
[492] Fix | Delete
$this->content = str_replace('</body>', $this->html_foot . '</body>', $this->content);
[493] Fix | Delete
}
[494] Fix | Delete
[495] Fix | Delete
// Drop noscript if enabled
[496] Fix | Delete
if ($this->conf(self::O_OPTM_NOSCRIPT_RM)) {
[497] Fix | Delete
// $this->content = preg_replace( '#<noscript>.*</noscript>#isU', '', $this->content );
[498] Fix | Delete
}
[499] Fix | Delete
123
It is recommended that you Edit text format, this type of Fix handles quite a lot in one request
Function