private $html_head = ''; // The html info prepend to
private static $_var_i = 0;
private $_var_preserve_js = array();
private $_request_url;
private $i2 = 0;
/**
* 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_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;
}
// 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 ) );
}
}
/**
* 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();
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
$result = Utility::str_hit_array( $_SERVER[ 'REQUEST_URI' ], $this->conf( self::O_OPTM_EXC ) );
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_http2_css = defined( 'LITESPEED_GUEST_OPTM' ) || $this->conf( self::O_OPTM_CSS_HTTP2 );
$this->cfg_http2_js = ! defined( 'LITESPEED_GUEST_OPTM' ) && $this->conf( self::O_OPTM_JS_HTTP2 );
$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;
}
else if ( 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( '#