/home/arranoyd/public_html/wp-content/plugins/litespeed-cache/src/optimizer.cls.php
<?php
/**
* The optimize4 class.
*
* @since 1.9
* @package LiteSpeed
* @subpackage LiteSpeed/inc
* @author LiteSpeed Technologies <info@litespeedtech.com>
*/
namespace LiteSpeed ;
defined( 'WPINC' ) || exit ;
class Optimizer extends Instance
{
protected static $_instance ;
private $_conf_css_font_display ;
/**
* Init optimizer
*
* @since 1.9
* @access protected
*/
protected function __construct()
{
$this->_conf_css_font_display = Conf::val( Base::O_OPTM_CSS_FONT_DISPLAY ) ;
if ( ! empty( Base::$CSS_FONT_DISPLAY_SET[ $this->_conf_css_font_display ] ) ) {
$this->_conf_css_font_display = Base::$CSS_FONT_DISPLAY_SET[ $this->_conf_css_font_display ] ;
}
}
/**
* Run HTML minify process and return final content
*
* @since 1.9
* @access public
*/
public function html_min( $content )
{
$options = array() ;
if ( Conf::val( Base::O_OPTM_CSS_INLINE_MIN ) ) {
$options[ 'cssMinifier' ] = __CLASS__ . '::minify_css' ;
}
if ( Conf::val( Base::O_OPTM_JS_INLINE_MIN ) ) {
$options[ 'jsMinifier' ] = __CLASS__ . '::minify_js' ;
}
/**
* Added exception capture when minify
* @since 2.2.3
*/
try {
$obj = new Lib\HTML_MIN( $content, $options ) ;
$content_final = $obj->process() ;
if ( ! defined( 'LSCACHE_ESI_SILENCE' ) ) {
$content_final .= "\n" . '<!-- Page optimized by LiteSpeed Cache @' . date('Y-m-d H:i:s') . ' -->' ;
}
return $content_final ;
} catch ( \Exception $e ) {
Debug2::debug( '******[Optmer] html_min failed: ' . $e->getMessage() ) ;
error_log( '****** LiteSpeed Optimizer html_min failed: ' . $e->getMessage() ) ;
return $content ;
}
}
/**
* Run minify process and return final content
*
* @since 1.9
* @access public
* @return string The final content
*/
public function serve( $filename, $concat_only )
{
if ( ! is_array( $filename ) ) {
// Search filename in db for src URLs
$urls = Data::get_instance()->optm_hash2src( $filename ) ;
if ( ! $urls || ! is_array( $urls ) ) {
return false;
}
}
else {
$urls = $filename ;
}
// Parse real file path
$real_files = array() ;
foreach ( $urls as $url ) {
$real_file = Utility::is_internal_file( $url ) ;
if ( ! $real_file ) {
continue ;
}
$real_files[] = $real_file[ 0 ] ;
}
if ( ! $real_files ) {
return false;
}
Debug2::debug2( '[Optmer] urls : ', $urls ) ;
// set_error_handler( 'litespeed_exception_handler' ) ;
$content = '' ;
$tmp = parse_url( $urls[ 0 ], PHP_URL_PATH ) ;
$file_type = substr( $tmp, strrpos( $tmp, '.' ) + 1 ) ;
// try {
// Handle CSS
if ( $file_type === 'css' ) {
$content = $this->_serve_css( $real_files, $concat_only ) ;
}
// Handle JS
else {
$content = $this->_serve_js( $real_files, $concat_only ) ;
}
// } catch ( \Exception $e ) {
// $tmp = '[url] ' . implode( ', ', $urls ) . ' [err] ' . $e->getMessage() ;
// Debug2::debug( '******[Optmer] serve err ' . $tmp ) ;
// error_log( '****** LiteSpeed Optimizer serve err ' . $tmp ) ;
// return false ;//todo: return ori data
// }
// restore_error_handler() ;
/**
* Clean comment when minify
* @since 1.7.1
*/
if ( Conf::val( Base::O_OPTM_RM_COMMENT ) ) {
$content = $this->_remove_comment( $content, $file_type ) ;
}
Debug2::debug2( '[Optmer] Generated content ' . $file_type ) ;
// Add filter
$content = apply_filters( 'litespeed_optm_cssjs', $content, $file_type, $urls ) ;
return $content ;
}
/**
* Serve css with/without minify
*
* @since 1.9
* @access private
*/
private function _serve_css( $files, $concat_only = false )
{
$con = array() ;
foreach ( $files as $real_path ) {
Debug2::debug2( '[Optmer] [real_path] ' . $real_path ) ;
$data = File::read( $real_path ) ;
// Font optimize
if ( $this->_conf_css_font_display ) {
$data = preg_replace( '#(@font\-face\s*\{)#isU', '${1}font-display:' . $this->_conf_css_font_display . ';', $data ) ;
}
$data = preg_replace( '/@charset[^;]+;\\s*/', '', $data ) ;
if ( ! $concat_only && ! $this->_is_min( $real_path ) ) {
$data = self::minify_css( $data ) ;
}
$data = Lib\CSS_MIN\UriRewriter::rewrite( $data, dirname( $real_path ) ) ;
$con[] = $data ;
}
return implode( '', $con ) ;
}
/**
* Serve JS with/without minify
*
* @since 1.9
* @access private
*/
private function _serve_js( $files, $concat_only )
{
$con = array() ;
foreach ( $files as $real_path ) {
$data = File::read( $real_path ) ;
if ( ! $concat_only && ! $this->_is_min( $real_path ) ) {
$data = self::minify_js( $data ) ;
}
else {
$data = $this->_null_minifier( $data ) ;
}
$con[] = $data ;
}
return implode( "\n;", $con ) ;
}
/**
* Minify CSS
*
* @since 2.2.3
* @access private
*/
public static function minify_css( $data )
{
try {
$obj = new Lib\CSS_MIN\Minifier() ;
return $obj->run( $data ) ;
} catch ( \Exception $e ) {
Debug2::debug( '******[Optmer] minify_css failed: ' . $e->getMessage() ) ;
error_log( '****** LiteSpeed Optimizer minify_css failed: ' . $e->getMessage() ) ;
return $data ;
}
}
/**
* Minify JS
*
* Added exception capture when minify
*
* @since 2.2.3
* @access private
*/
public static function minify_js( $data, $js_type = '' )
{
// For inline JS optimize, need to check if it's js type
if ( $js_type ) {
preg_match( '#type=([\'"])(.+)\g{1}#isU', $js_type, $matches ) ;
if ( $matches && $matches[ 2 ] != 'text/javascript' ) {
Debug2::debug( '******[Optmer] minify_js bypass due to type: ' . $matches[ 2 ] ) ;
return $data ;
}
}
try {
$data = Lib\JSMin::minify( $data ) ;
return $data ;
} catch ( \Exception $e ) {
Debug2::debug( '******[Optmer] minify_js failed: ' . $e->getMessage() ) ;
// error_log( '****** LiteSpeed Optimizer minify_js failed: ' . $e->getMessage() ) ;
return $data ;
}
}
/**
* Basic minifier
*
* @access private
*/
private function _null_minifier( $content )
{
$content = str_replace( "\r\n", "\n", $content ) ;
return trim( $content ) ;
}
/**
* Check if the file is already min file
*
* @since 1.9
* @access private
*/
private function _is_min( $filename )
{
$basename = basename( $filename ) ;
if ( preg_match( '|[-\.]min\.(?:[a-zA-Z]+)$|i', $basename ) ) {
return true ;
}
return false ;
}
/**
* Remove comment when minify
*
* @since 1.7.1
* @since 1.9 Moved here from optiize.cls
* @access private
*/
private function _remove_comment( $content, $type )
{
$_from = array(
'|\/\*.*\*\/|U',
'|\/\*.*\*\/|sU',
"|\n+|",
// "|;+\n*;+|",
// "|\n+;|",
// "|;\n+|"
) ;
$_to = array(
'',
"\n",
"\n",
// ';',
// ';',
// ';',
) ;
$content = preg_replace( $_from, $_to, $content ) ;
if ( $type == 'css' ) {
$content = preg_replace( "|: *|", ':', $content ) ;
$content = preg_replace( "| */ *|", '/', $content ) ;
}
$content = trim( $content ) ;
return $content ;
}
}