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<?php
/*
* SPEEDYCACHE
* https://speedycache.com/
* (c) SpeedyCache Team
*/
namespace SpeedyCache;
if( !defined('SPEEDYCACHE_PRO_VERSION') ){
die('HACKING ATTEMPT!');
}
class Enhanced{
static function init(){
global $speedycache;
$speedycache->enhanced = array();
$speedycache->enhanced['html'] = '';
$speedycache->enhanced['head_html'] = '';
$speedycache->enhanced['body_html'] = '';
$speedycache->enhanced['inline_scripts'] = '';
$speedycache->enhanced['cache_speedycache_minified'] = '';
$speedycache->enhanced['cache_speedycache_minified'] = 'cache/speedycache/'.SPEEDYCACHE_SERVER_HOST. '/assets';
}
// Removes white space after </html> & \r & any white space
static function remove_trailing_html_space($content){
global $speedycache;
$content = preg_replace("/<\/html>\s+/", '</html>', $content);
$content = str_replace("\r", '', $content);
return preg_replace("/^\s+/m", '', ((string) $content));
}
static function remove_head_comments(){
global $speedycache;
$data = $speedycache->enhanced['head_html'];
$comment_list = array();
$comment_start_index = false;
for($i = 0; $i < strlen( $data ); $i++){
if(isset($data[$i-3])){
if($data[$i-3].$data[$i-2].$data[$i-1].$data[$i] == '<!--'){
if(!preg_match("/if\s+|endif\s*\]/", substr($data, $i, 17))){
$comment_start_index = $i-3;
}
}
}
if(isset($data[$i-2])){
if($comment_start_index){
if($data[$i-2].$data[$i-1].$data[$i] == '-->'){
array_push($comment_list, array('start' => $comment_start_index, 'end' => $i));
$comment_start_index = false;
}
}
}
}
if(!empty($comment_list)){
foreach(array_reverse($comment_list) as $key => $value){
$data = substr_replace($data, '', $value['start'], ($value['end'] - $value['start'] + 1));
}
$speedycache->enhanced['html'] = str_replace($speedycache->enhanced['head_html'], $data, $speedycache->enhanced['html']);
}
return $speedycache->enhanced['html'];
}
static function eliminate_newline($start_string, $end_string, $tmp_html){
$data = $tmp_html;
$list = array();
$start_index = false;
$end_index = false;
for($i = 0; $i < strlen( $data ); $i++){
if(substr($data, $i, strlen($start_string)) == $start_string){
if(!$end_index){
$start_index = $i;
}
}
if($start_index && $i > $start_index){
if(substr($data, $i, strlen($end_string)) == $end_string){
$end_index = $i + strlen($end_string) - 1;
$text = substr($data, $start_index, ($end_index - $start_index + 1));
array_push($list, array('start' => $start_index, 'end' => $end_index, 'text' => $text));
$start_index = false;
$end_index = false;
}
}
}
if(isset($list[0])){
$list = array_reverse($list);
foreach($list as $key => $value){
if(preg_match("/(<script|<style|<textarea)/i", $value['text'])){
continue;
}
//var $bodybg=$('<div id="ncf-body-bg"/>').prependTo($body);
if(preg_match("/\)\.prependTo\(/i", $value['text'])){
continue;
}
//<div class="wp_syntax" style="position:relative;">
if(preg_match("/<div\s+class\=\"wp\_syntax\"[^\>]*>/i", $value['text'])){
continue;
}
$value['text'] = preg_replace("/\s+/", " ", ((string)$value['text']));
$tmp_html = substr_replace($tmp_html, $value['text'], $value['start'], ($value['end'] - $value['start'] + 1));
}
}
return $tmp_html;
}
static function minify_inline_css($data){
global $speedycache;
$style_list = array();
$style_start_index = false;
for($i = 0; $i < strlen( $data ); $i++){
if(isset($data[$i-5])){
if(substr($data, $i - 5, 6) == '<style'){
$style_start_index = $i - 5;
}
}
if(isset($data[$i-7])){
if($style_start_index){
if(substr($data, $i - 7, 8) == '</style>'){
array_push($style_list, array('start' => $style_start_index, 'end' => $i));
$style_start_index = false;
}
}
}
}
if(!empty($style_list)){
foreach(array_reverse($style_list) as $key => $value){
// document.write('<style type="text/css">div{}</style')
$prev_20_chars = substr($data, $value['start'] - 20, 20);
if(strpos($prev_20_chars, 'document.write') !== false){
continue;
}
$inline_style = substr($data, $value['start'], ($value['end'] - $value['start'] + 1));
if(strlen($inline_style) > 15000){
$part_of_inline_style = substr($inline_style, 0, 15000);
}else{
$part_of_inline_style = $inline_style;
}
if(preg_match('/'.preg_quote($part_of_inline_style, '/').'/i', $speedycache->enhanced['inline_scripts'])){
continue;
}
if(preg_match("/<style\s+(amp-boilerplate|amp-custom)>/", $inline_style)){
continue;
}
$inline_style = \SpeedyCache\Enhanced::minify_css($inline_style);
$inline_style = preg_replace("/\/\*(.*?)\*\//s", "\n", $inline_style); //replaces comments with \n
$inline_style = preg_replace("/(<style[^\>]*>)\s+/i", "$1", $inline_style); //removes white space after <style> tag
$inline_style = preg_replace("/\s+(<\/style[^\>]*>)/i", "$1", $inline_style); //removes white space before </style> tag
$inline_style = str_replace(' type="text/css"', '', $inline_style);
$inline_style = str_replace(' type="text/css"', '', $inline_style);
$data = substr_replace($data, $inline_style, $value['start'], ($value['end'] - $value['start'] + 1));
}
}
return $data;
}
static function remove_html_comments($data){
$comment_list = array();
$comment_start_index = false;
for($i = 0; $i < strlen($data); $i++){
if(isset($data[$i-3])){
if($data[$i-3].$data[$i-2].$data[$i-1].$data[$i] == "<!--"){
if(!preg_match("/if\s+|endif\s*\]/", substr($data, $i, 17))){
$comment_start_index = $i-3;
}
}
}
if(isset($data[$i-2])){
if($comment_start_index){
if($data[$i-2].$data[$i-1].$data[$i] == '-->'){
array_push($comment_list, array('start' => $comment_start_index, 'end' => $i));
$comment_start_index = false;
}
}
}
}
if(!empty($comment_list)){
foreach(array_reverse($comment_list) as $key => $value){
if(($value['end'] - $value['start']) > 4){
$comment_html = substr($data, $value['start'], ($value['end'] - $value['start'] + 1));
if(preg_match("/google\_ad\_slot/i", $comment_html)){
}else{
$data = substr_replace($data, '', $value['start'], ($value['end'] - $value['start'] + 1));
}
}
}
}
return $data;
}
static function minify_html(&$content){
global $speedycache;
if(defined('SPEEDYCACHE_VERSION') && version_compare(SPEEDYCACHE_VERSION, '1.2.0', '<')){
return $speedycache->enhanced['html'];
}
$tmp_html = $content;
$tmp_html = self::remove_trailing_html_space($tmp_html);
$tmp_html = self::eliminate_newline('<div', '</div>', $tmp_html);
$tmp_html = self::eliminate_newline('<li', '</li>', $tmp_html);
$tmp_html = self::minify_inline_js($tmp_html);
$tmp_html = self::minify_inline_css($tmp_html);
$tmp_html = self::remove_html_comments($tmp_html);
$tag_list = 'p|div|span|img|nav|ul|li|header|a|b|i|article|section|footer|style|script|link|meta|body';
$tmp_html = preg_replace_callback("/\<(".$tag_list.")\s+[^\>\<]+\>/i", '\SpeedyCache\Enhanced::remove_spaces_in_tag', $tmp_html);
$tmp_html = preg_replace('/\h+<\//u', '</', $tmp_html);
// BECAUSE of JsemÂ<span class="label">
// - need to remove spaces between > <
// - need to remove spaces between <span> Assdfdf </span>
// $tmp_html = preg_replace("/\h*\<(".$tag_list.")\s+([^\>]+)>\h*/i", "<$1 $2>", $tmp_html);
// $tmp_html = preg_replace("/\h*\<\/(".$tag_list.")>\h*/i", "</$1>", $tmp_html);
$tmp_html = preg_replace("/\s*<\/div>\s*/is", "</div>", $tmp_html);
$content = $tmp_html;
}
static function search_in_inline_scripts($content){
global $speedycache;
if(strpos($speedycache->enhanced['inline_scripts'], $content) === false){
return false;
}
return true;
}
static function remove_spaces_in_tag($matches){
if(self::search_in_inline_scripts($matches[0])){
return $matches[0];
}
/**
* Structure of this array is
* searchable => replacer
*/
$pregs_replaces = array(
'/([\"\'])\s+\/>/' => '$1/>', // <img id="1" />
'/\s+/' => ' ', // <div id="1">
'/\s+([\"\'])/' => '$1', // <div id="1 ">
'/([a-z])\=([\"\'])\s+/' => '$1=$2', // <div id=" 1"> <img src="data:image/gif;base64,R0lAICRAEAOw==" lazy="image.jpg" />
'/\h*class\=\'\'\h*/' => ' ', // <ul class="">
'/\h*class\=\"\"\h*/' => ' ', // <ul class=''>
);
foreach($pregs_replaces as $searchable => $replacer){
$matches[0] = preg_replace($searchable, $replacer, $matches[0]);
}
// <div style="">
if(!preg_match("/id\=\"ctf_/", $matches[0])){
/*
to exclude for Custom Twitter Feeds Pro Personal
<div class="ctf-item ctf-author-msdsmarine ctf-new ctf-hide-avatar ctf-retweet ctf-tc-checked" id="ctf_1323705595325800448" style="">
*/
$matches[0] = preg_replace("/\h*style\=[\"\'][\"\']\h*/", " ", $matches[0]);
}
// <div id="1" >
// <div >
$matches[0] = preg_replace("/\h+\>/", ">", $matches[0]);
// <script src='//bqcmw.js' type="text/javascript"></script>
//$matches[0] = self::remove_type_attribute_for_js($matches[0]);
return $matches[0];
}
static function remove_type_attribute_for_js($script){
if(preg_match("/src\s*\=\s*[\"\']/", $script)){
$script = preg_replace("/\stype\s*\=\s*[\'\"][^\"\']+[\'\"]/", " ", $script);
$script = preg_replace("/\s+/", " ", $script);
$script = preg_replace("/([\'\"])\s>/", "$1>", $script);
}
return $script;
}
static function remove_single_line_comments($html){
$html = preg_replace("/<!--((?:(?!-->).)+)-->/", '', $html);
$html = preg_replace("/\/\*((?:(?!\*\/).)+)\*\//", '', $html);
return $html;
}
/* CSS Part Start */
static function minify_css($source){
$data = $source;
$curl_list = array();
$curl_start_index = false;
$curl_start_count = 0;
$curl_end_count = 0;
for($i = 0; $i < strlen( $data ); $i++){
if($data[$i] == '{'){
$curl_start_count++;
if(!$curl_start_index){
$curl_start_index = $i;
}
}
if($data[$i] == '}'){
// .icon-basic-printer:before{content:"}";}
if(isset($data[$i+1]) && $data[$i+1] != "'" && $data[$i+1] != "'"){
$curl_end_count++;
}
}
if($curl_start_count && $curl_start_count == $curl_end_count){
array_push($curl_list, array('start' => $curl_start_index - 3, 'end' => $i + 3));
$curl_start_count = 0;
$curl_end_count = 0;
$curl_start_index = false;
}
}
if(!empty($curl_list)){
foreach(array_reverse($curl_list) as $key => $value){
$new_data = substr($data, $value['start'], ($value['end'] - $value['start'] + 1));
if(!preg_match("/[^\{]+\{[^\{]+\{/", $new_data)){
$new_data = preg_replace("/\s+/", " ", ((string) $new_data));
$new_data = preg_replace("/\s+}/", "}", $new_data); //removes white space before "}"
$new_data = preg_replace("/}\s+/", "} ", $new_data); //removes white space after "}"
$new_data = preg_replace("/\s*(\{|\;|\:)\s*/", "$1", $new_data);
$data = substr_replace($data, $new_data, $value['start'], ($value['end'] - $value['start'] + 1));
}else{
$first = strpos($new_data, '{');
$last = strrpos($new_data, '}');
$new_data_tmp = substr($new_data, $first+1, $last-$first-1);
$new_data_tmp = \SpeedyCache\Enhanced::minify_css($new_data_tmp);
$new_data = substr_replace($new_data, $new_data_tmp, $first+1, ($last-$first-1));
$data = substr_replace($data, $new_data, $value['start'], ($value['end'] - $value['start'] + 1));
}
}
$source = $data;
}
//@media (max-width: 767px){
$source = preg_replace("/\@media\s*\(\s*(max-width|min-width)\s*\:\s*([^\(\)\{\}\s]+)\s*\)\s*\{/", "@media($1:$2){", $source);
//@media (min-width: 768px) and (max-width: 1018px){
$source = preg_replace("/\@media\s*\(\s*(max-width|min-width)\s*\:\s*([^\(\)\{\}\s]+)\s*\)\s*and\s*\(\s*(max-width|min-width)\s*\:\s*([^\(\)\{\}\s]+)\s*\)\s*\{/", "@media($1:$2) and ($3:$4){", $source);
//@media screen and (max-width: 479px){
$source = preg_replace("/\@media\s+screen\s+and\s*\(\s*(max-width|min-width)\s*\:\s*([^\(\)\{\}\s]+)\s*\)\s*\{/", "@media screen and ($1:$2){", $source);
/*
article,
h2,
div:first-child,
.main{padding:0;}
*/
$source = preg_replace("/^([a-z0-9\_\.\-\:\>\s]+\,)\s+/im", "$1 ", $source);
return $source;
//$source = preg_replace_callback("/\s*\{((?:(?!content|\}).)+)\}\s*/", '\SpeedyCache\Enhanced::eliminate_newline_for_css'), $source);
//return $source;
}
// Regex to replace new line after \n /\s*\;(?:\s*|\n)/
//Replaces Space before and after { } ; :
static function eliminate_newline_for_css($matches){
$matches[0] = preg_replace("/\s+/", " ", ((string) $matches[0]));
$matches[0] = preg_replace("/\s*{\s*/", "{", $matches[0]);
$matches[0] = preg_replace("/\s*}\s*/", "}", $matches[0]);
$matches[0] = preg_replace("/\s*\;\s*/", ";", $matches[0]);
$matches[0] = preg_replace("/\s*\:\s*/", ":", $matches[0]);
return $matches[0]."\n";
}
static function render_blocking($html, $render_blocking_css = false){
\SpeedyCache\RenderBlocking::init($html);
return \SpeedyCache\RenderBlocking::action($render_blocking_css);
}
static function google_fonts(){
//for checking
}
static function lazy_load($content){
global $speedycache;
\SpeedyCache\LazyLoad::init();
$funcs = array(
'\SpeedyCache\LazyLoad::images',
'\SpeedyCache\LazyLoad::iframe',
'\SpeedyCache\LazyLoad::background',
'\SpeedyCache\LazyLoad::video'
);
foreach($funcs as $fn){
// if(!function_exists($fn)){
// continue;
// }
$fn_res = call_user_func_array($fn, array($content, $speedycache->enhanced['inline_scripts']));
if(empty($fn_res)){
continue;
}
$content = $fn_res;
}
return $content;
}
/* CSS Part Start */
/* Js Part Start */
// TODO:: not used anywhere
static function single_line_js($source){
$source = preg_replace("/\n/", '', $source);
return $source;
}
static function minify_js($source, $inline_js = false){
//$source = preg_replace("/\n\/\/.*/", "", $source);
//$source = preg_replace("/\/\*.*?\*\//s", "", $source);
if(preg_match("/dynamicgoogletags\.update\(\)/i", $source)){
$source = "<script>dynamicgoogletags.update();</script>";
return $source;
}
// <script>
// (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
// (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
// m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
// })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
// ga('create', 'UA-9999-9', 'auto');
// ga('send', 'pageview');
// </script>
if(preg_match("/<script[^\>]*>\s*\(function\(i,s,o,g,r,a,m\)\{i\[\'GoogleAnalyticsObject\'\]/i", $source)){
if(preg_match("/ga\(\'send\',\s*\'pageview\'\)\;\s*<\/script>/i", $source)){
$source = preg_replace("/\s+/", " ", ((string) $source));
$source = preg_replace("/\s*<(\/?)script([^\>]*)>\s*/", "<$1script$2>", $source);
return $source;
}
}
// sometimes the lines are ended with "\r" instead of "\n"
$source = str_replace("\r", "\n", $source);
$source = preg_replace("/^\s+/m", '', $source);
if(empty($inline_js)){
// // --></script> in html
//$source = preg_replace("/\n\/\/[^\n]+/", "", $source); // to remove single line comments
$source = preg_replace_callback("/\n\/\/[^\n]+/", '\SpeedyCache\Enhanced::remove_single_line_comments_from_js', $source);
}
if(!empty($inline_js)){
if(preg_match("/var\sptsTables/i", $source) && preg_match("/var\sptsBuildConst/i", $source)){
}
//to remove only CDATA from inline js
$source = preg_replace("/\/\*\s*\<\!\[CDATA\[\s*\*\//", "", $source);
$source = preg_replace("/\/\*\s*\]\]\>\s*\*\//", "", $source);
}
//<script>//alert();</script>
if(preg_match("/<script[^\>]*>\s*\/\/[^\n]*<\/script>/i", $source)){
return '';
}
$source = preg_replace_callback("/([a-z]{4,5}\:)?\/\/[^\n]*/", '\SpeedyCache\Enhanced::remove_single_line_comments_from_js', $source);
$source = preg_replace("/\}\)\;[^\S\r\n]+/", "});", $source);
$source = preg_replace("/^\s+/m", "", $source);
$source = preg_replace("/\s*(\!|\=)(\={1,3})\s*/", "$1$2", $source);
// to remove spaces at the end of the line
$source = preg_replace("/(\D)[^\S\r\n]+\n/", "$1\n", $source);
$source = preg_replace("/([^\[\.\?])[^\S\r\n]+\:[^\S\r\n]+([^\]\.\?])/", "$1:$2", $source);
$source = preg_replace("/([^\s\|])[^\S\r\n]*\&\&[^\S\r\n]*([^\s\|])/", "$1&&$2", $source);
$source = preg_replace("/([^\s\&])[^\S\r\n]*\|\|[^\S\r\n]*([^\s\&])/", "$1||$2", $source);
// @media all and (width), maybe later we can do preg_replace_callback()
//b.match(/^(<div><br( ?\/), no need to remove the spage between ( and ?
//dashArray.replace(/( *, *)/g, no need to remove the spage between ( and *
$source = preg_replace("/[^\S\r\n]*\([^\S\r\n]+([^\?\*\+])/", "($1", $source);
$source = preg_replace("/and\(/", "and (", $source);
//------
$source = preg_replace("/([^\s\=\!])[^\S\r\n]*\=[^\S\r\n]*([^\s\=\!])/", "$1=$2", $source);
$source = preg_replace("/\)\s+\{/", "){", $source);
$source = preg_replace("/\}\s+}/s", "}}", $source);
$source = preg_replace("/\};\s+}/s", "};}", $source);
$source = preg_replace("/\}\s*else\s*\{/", "}else{", $source);
$source = preg_replace("/\}[^\S\r\n]*else[^\S\r\n]*if[^\S\r\n]*\(/", "}else if(", $source);
$source = preg_replace("/if\s*\(\s*/", "if(", $source);
$source = preg_replace("/[^\S\r\n]+\)/", ")", $source);
$source = preg_replace("/<script([^\>\<]*)>\s*/i", "<script$1>", $source);
$source = preg_replace("/\s*<\/script>/i", "</script>", $source);
// .name( something)
$source = preg_replace("/(\.[A-Za-z\_]+\()\s{1,2}/", "$1", $source);
// Muli-Line Comments Start
$source = preg_replace_callback("/\/\*(.*?)\*\//s", '\SpeedyCache\Enhanced::remove_multi_line_comments_from_js', $source);
// END
$source = str_replace("\xEF\xBB\xBF", '', $source);
$source = preg_replace("/^\s+/m", '', $source);
//<script><!--
//var x=5;
//</script>
if(!empty($inline_js)){
if(preg_match("/<script[^\>]*><\!--/i", $source)){
if(!preg_match("/-->/i", $source)){
$source = preg_replace("/(<script[^\>]*>)<\!--\n/i", "$1", $source);
}
}
}
return $source;
}
static function minify_inline_js($data){
global $speedycache;
$script_list = array();
$script_start_index = false;
for($i = 0; $i < strlen( $data ); $i++){
if(isset($data[$i - 6])){
if(substr($data, $i - 6, 7) == '<script'){
$script_start_index = $i - 6;
}
}
if(isset($data[$i - 8])){
if($script_start_index){
if(substr($data, $i - 8, 9) == '</script>'){
array_push($script_list, array('start' => $script_start_index, 'end' => $i));
$script_start_index = false;
}
}
}
}
if(!empty($script_list)){
foreach(array_reverse($script_list) as $key => $value){
$inline_script = substr($data, $value['start'], ($value['end'] - $value['start'] + 1));
if(preg_match("/google\_ad\_slot/i", $inline_script)){
$speedycache->enhanced['inline_scripts'] = $speedycache->enhanced['inline_scripts'].$inline_script;
continue;
}
if(preg_match("/<script[^\>]+src=[\'\"][^\>]+>/i", $inline_script)){
continue;
}
if(preg_match("/<script[^\>]+text\/template[^\>]+>/i", $inline_script)){
continue;
}
$speedycache->enhanced['inline_scripts'] = $speedycache->enhanced['inline_scripts'].$inline_script;
$inline_script = \SpeedyCache\Enhanced::minify_js($inline_script, true);
$inline_script = str_replace(' type="text/javascript"', '', $inline_script);
$inline_script = str_replace(' type="text/javascript"', '', $inline_script);
$speedycache->enhanced['inline_scripts'] = $speedycache->enhanced['inline_scripts'].$inline_script;
$data = substr_replace($data, $inline_script, $value['start'], ($value['end'] - $value['start'] + 1));
}
}
return $data;
}
static function remove_multi_line_comments_from_js($matches){
//segs.unshift('//*[@id="' + elm.getAttribute('id') + '"]');
if(preg_match("/\/\*\[\@/", $matches[0])){
return $matches[0];
}
if(preg_match("/\/\*\@cc_on/i", $matches[0])){
return $matches[0];
}
if(preg_match("/\.exec\(|\.test\(|\.match\(|\.search\(|\.replace\(|\.split/", $matches[0])){
return $matches[0];
}
if(preg_match("/function\(/", $matches[0])){
return $matches[0];
}
//c("unmatched `/*`");
if(preg_match("/^\/\*\`\"\)\;/", $matches[0])){
return $matches[0];
}
// <script type='text/javascript'>
// /* <![CDATA[ */
// var icegram_data = {"custom_js":"<script type=\"text\/javascript\">\/* add your js code here *\/ <\/script>"};
// /* ]]> */
// </script>
if(preg_match("/\\/script>/", $matches[0]) && preg_match("/\*\\//", $matches[0])){
return $matches[0];
}
// {comment:{pattern:/^([ \t]*)\/[\/*].*(?:(?:\r?\n|\r)\1[ \t]+.+)*/m,lookbehind:!0}}
if(preg_match("/\.\+\)\*\//", $matches[0])){
return $matches[0];
}
// var sourceURL = '\n/*\n//# sourceURL=' + (options.sourceURL || '/lodash/template/source[' + (templateCounter++) + ']') + '\n*/';
if(preg_match("/\/\*\\\\n\/\/\#\s+sourceURL/i", $matches[0])){
return $matches[0];
}
// function(e){return"/*# sourceURL=".concat(r.sourceRoot).concat(e," */")
if(preg_match("/\/\*\#\s+sourceURL/i", $matches[0])){
return $matches[0];
}
// /*# sourceMappingURL=data:application/json;base64,".concat(btoa(unescape(encodeURIComponent(JSON.stringify(o))))," */
if(preg_match("/\/\*\#\s+sourceMappingURL/i", $matches[0])){
return $matches[0];
}
// var COMMON_HEADERS = {'Accept': 'application/json, text/plain, */*'};
if(preg_match("/\/\*\'\}\;/", $matches[0])){
return $matches[0];
}
// /*\\\w]+(\[[0-9a-z_-]+\])?)\s*/
// /*][^*]*\*+)*\//g,n=/\n/g,r=/^\s*/
// These regular expressions were getting removed as well, so we exclude them
if(preg_match("/\/\*.*\\\\s\*\/$/", $matches[0])){
return $matches[0];
}
return '';
}
static function remove_single_line_comments_from_js($matches){
if(preg_match("/\n\/\/[^\n]+/", $matches[0])){
// // */
if(preg_match("/\/\/\s*\*\//", $matches[0])){
return $matches[0];
}
return '';
}
// // something */
if(preg_match("/\/\/[^\n\t]*\*\//", $matches[0])){
return $matches[0];
}
// var url = {"name" : "something",
// "url" : '//$1/p/$2/media/?size=l'
// };
if(preg_match("/\'\h*$/", $matches[0])){
if(substr_count($matches[0], "'") == 1){
return $matches[0];
}
}
// ia=/^\.\//;x=Object.prototype;var K=x.toString,
if(preg_match("/^\/\/\;/", $matches[0])){
return $matches[0];
}
// var snd = new Audio("data:audio/wav;base64,//uQRAAAAWMSLwUIYAAsYkXgoQw3kuZGUAAAAAAAAAACU=");
if(preg_match("/^\/\/[A-Za-z0-9\+\/\=]+[\'\"]\)\;/", $matches[0])){
return $matches[0];
}
// "data:audio/wave;base64,/UklGRiYAAABXQVZFZm10IBAAAAABAAEARKwAAIhYAQACABAAZGF0YQIAAAD//w==":"about:blank",
if(preg_match("/^\/\/w\=\=\"/", $matches[0])){
return $matches[0];
}
// var div = {"background-image":"url(data:image/png;base64,wD/AP+gvatMW2UYx//POaRK5CYII=)"};
if(preg_match("/^\/\/[A-Za-z0-9\+\/\=]+\)[\'\"]\}/", $matches[0])){
return $matches[0];
}
// base64
if(preg_match("/^\/\/[A-Za-z0-9\+\/\=]{150}/", $matches[0])){
return $matches[0];
}
// var a = '<a href="javascript://" id="nextLink" title="' + opts.strings.nextLinkTitle + '"></a>';
if(preg_match("/^cript\:\/\/\"/", $matches[0])){
return $matches[0];
}
// url.replace( /^http:\/\//i, 'https://' );
//domain = domain.replace(new RegExp(/^http\:\/\/|^https\:\/\/|^ftp\:\/\//i),"");
if(preg_match("/^\/\/i(\,|\))/", $matches[0])){
return $matches[0];
}
// {pattern:/\/\*[\*!][\s\S]*?\*\//gm,alias:"co2"}
// d=b?/[&<>"'\/]/g:/&(?!#?\w+;)|<|>|"|'|\//g;
// replace(/\//g,"")
// e.match(/^https?:\/\//g)
if(preg_match("/^\/\/gm?(\,|\)|\;)/", $matches[0])){
return $matches[0];
}
// match(/^https?:\/\//)
// var pattern = RegExp("^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\\?([^#]*))?(#(.*))?");
if(preg_match("/^\/\/(\)|\()/", $matches[0])){
return $matches[0];
}
//src="//about:blank" frameborder="0" allowfullscreen></iframe>'+
if(preg_match("/^\/\/about\:blank/", $matches[0])){
return $matches[0];
}
//"<img src='http"+(location.href.indexOf('https:')==0?'s://www':'://track')+".websiteceo.com/m/?"+q+"' width='1' height='1' border='0' align='left'>";
if(preg_match("/^\/\/www\'/", $matches[0])){
return $matches[0];
}
// if(URL.match( /^https?:\/\// ) ){
if(preg_match("/^\/\/\s*\)\s*\)\s*\{/", $matches[0])){
return $matches[0];
}
// "string".replace(/\//,3);
if(preg_match("/^\/\/\s*\,/", $matches[0])){
return $matches[0];
}
// src = src.replace('https?://[^./].','');
if(preg_match("/^\/\/\[[^\]\[]+\]/", $matches[0])){
return $matches[0];
}
// comments: /\/\*[^*]*\*+([^/][^*]*\*+)*\//gi,
if(preg_match("/^\/\/\s*gi\s*\,/", $matches[0])){
return $matches[0];
}
// var proto = document.location.protocol, host = "whatshelp.io", url = proto + "//static." + host;
if(preg_match("/^\/\/static\./i", $matches[0])){
return $matches[0];
}
// whatsapp://send?text=
// NOTE: preg_match_replace gets only 5 chars so we check "tsapp://" instead of "whatsapp://"
if(preg_match("/^tsapp\:\/\/send/", $matches[0])){
return $matches[0];
}
// sms://?&body="+postTitle+" "+postUrl
if(preg_match("/^\/\/\?\&/", $matches[0])){
return $matches[0];
}
// viber://forward?text="+postTitle+" "+postUrl
if(preg_match("/^viber\:\/\//", $matches[0])){
return $matches[0];
}
//threema://compose?text="+postTitle+" "+postUrl
if(preg_match("/^reema\:\/\//", $matches[0])){
return $matches[0];
}
// weixin://
if(preg_match("/^eixin\:\/\//", $matches[0])){
return $matches[0];
}
// fb-messenger://share?
if(preg_match("/^enger\:\/\//", $matches[0])){
return $matches[0];
}
// rtmp://37.77.2.234:1935/redirect/live.flv
if(preg_match("/^rtmp\:\/\//", $matches[0])){
return $matches[0];
}
// comgooglemaps://?q=40.956572,29.0859053&directionsmode=driving
if(preg_match("/^emaps\:\/\//", $matches[0])){
return $matches[0];
}
// javascript://
if(preg_match("/^cript\:\/\//", $matches[0])){
return $matches[0];
}
// jsFileLocation:"//29.59.155.173/~cfo/site-data/plugins/revslider/public/assets/js/",
if(preg_match("/^\/\/([0-9]{1,3}\.){3}[0-9]{1,3}\/\~/", $matches[0])){
return $matches[0];
}
// var url = /[-a-zA-Z0-9@:%_\+.~#?&//=]{2,256}\.[a-z]{2,4}\b(\/[-a-zA-Z0-9@:%_\+.~#?&//=]*)?/gi;
if(preg_match("/\/\/\=\]/", $matches[0])){
return $matches[0];
}
if(preg_match("/^maps\:\/\//", $matches[0])){
return $matches[0];
}
// "line://msg/text/" + postTitle + "! " + postUrl
if(preg_match("/^line\:\/\//", $matches[0])){
return $matches[0];
}
// document.write('<script defer src="//:"></script>');
if(preg_match("/^\/\/\:\"/", $matches[0])){
return $matches[0];
}
// url: "//$1/p/$2/media/?size=l"
if(preg_match("/^\/\/\\$/", $matches[0])){
return $matches[0];
}
if(preg_match("/^\/\/\//", $matches[0])){
return $matches[0];
}
if(preg_match("/^http/", $matches[0])){
return $matches[0];
}
// var xxx={"case":"\nhttp://www.google.com"};
if(preg_match("/^nhttp/", $matches[0])){
return $matches[0];
}
// var currUrl = 'file://' + "something";
if(preg_match("/^file\:\/\//i", $matches[0])){
return $matches[0];
}
//<a href="javascript://nop/" class="morelink">
if(preg_match("/cript\:\/\/nop/i", $matches[0])){
return $matches[0];
}
// Flash.RTMP_RE = /^rtmp[set]?:\/\//i;
if(preg_match("/^\/\/i\;/", $matches[0])){
return $matches[0];
}
//segs.unshift('//*[@id="' + elm.getAttribute('id') + '"]');
if(preg_match("/^\/\/\*\[/", $matches[0])){
return $matches[0];
}
// e.write('<!DOCTYPE html "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">')
if(preg_match("/^\/\/W3C\/\/DTD\s+XHTML/i", $matches[0])){
return $matches[0];
}
// var sourceURL = '\n/*\n//# sourceURL=' + (options.sourceURL || '/lodash/template/source[' + (templateCounter++) + ']') + '\n*/';
// var xxx = "} catch (e){ throw 'TemplateError: ' + e + ' (on " + name + "' + ' line ' + this.line + ')'; } " + "//@ sourceURL=" + name + "\n" // source map
if(preg_match("/^\/\/(\#|\@)\s+sourceURL/i", $matches[0])){
return $matches[0];
}
// options.tileLayerThem = '//{s}.tile.openstreetmap.org/{z}/{x}/{y}.png';
if(preg_match("/^\/\/\{[^\}]+\}\./", $matches[0])){
return $matches[0];
}
// document.write("<"+"script defer src=\"//:\" id=\"__onload_ie_pixastic__\"></"+"script>");
if(preg_match("/^\/\/\:\\\\(\"|\')/", $matches[0])){
return $matches[0];
}
// a.src='//cdn.'+w[r+'h']+'/libs/b.js';
if(preg_match("/^\/\/cdn\./", $matches[0])){
return $matches[0];
}
//<!DOCTYPE svg "-//W3C//DTD SVG 1.1//EN
if(preg_match("/^\/\/W3C/i", $matches[0])){
return $matches[0];
}
/*
//# sourceMappingURL=angular.min.js.map
//# sourceMappingURL=data:application
*/
if(preg_match("/sourceMappingURL\s*\=\s*(angular\.min\.js\.map|data\:application)/i", $matches[0])){
return $matches[0];
}
if(preg_match("/\.exec\(|\.test\(|\.match\(|\.search\(|\.replace\(|\.split/", $matches[0])){
return $matches[0];
}
if(preg_match("/^\/\/(?!\-)(?:[a-zA-Z\d\-]{0,62}[a-zA-Z\d]\.){1,126}(?!\d+)[a-zA-Z\d]{1,63}/", $matches[0])){
return $matches[0];
}
if(preg_match("/\'|\"/", $matches[0])){
// ' something
if(preg_match("/^\/\/\s*[\'|\"]/", $matches[0])){
return $matches[0];
}
// new Validator.Assert().Regexp('(https?:\\/\\/)?(www\\.)?[-a-zA-Z0-9@:%._\\+~#=]{2,256}\\.[a-z]{2,4}\\b([-a-zA-Z0-9@:%_\\+.~#?&//=]*)', 'i');
if(preg_match("/[\'\"]\,\s*[\'\"]i[\'\"]\)\;/", $matches[0])){
return $matches[0];
}
/*static function speedycache_powerful_html_Uc(a,b){var c=Q&&Q.isAvailable(),d=c&&!(nb.kd||!0===nb.get("previous_websocket_failure"));b.ce&&(c||L("
wss:// URL used, but browser isn't known to support websockets. Trying anyway."),d=!0);if(d)a.Mb=[Q];else{var e=a.Mb=[];Vb(Vc,function(a,b){b&&b.isAvailable()&&e.push(b)})}}static function speedycache_powerful_html_Wc(a){if(0<a.Mb.length)return a.Mb[0];throw Error("No transports available");};static function speedycache_powerful_html_Xc(a,b,c,d,e,f){this.id=a;this.e=Mb("c:"+this.id+":");this.Lc=c;this.Ab=d;this.S=e;this.Kc=f;this.M=b;this.fc=[];this.Zc=0;this.yd=new Tc(b);this.ma=0;this.e("Connection created");Yc(this)}
*/
if(preg_match("/if\(/", $matches[0]) && preg_match("/this\./", $matches[0]) && preg_match('/function/', $matches[0])){
return $matches[0];
}
// <script defer src="//:" id="__onload_ie_pixastic__">\x3c/script>
if(preg_match("/x3c\/script>/i", $matches[0])){
return $matches[0];
}
return '';
}
if(preg_match("/<\/script>/", $matches[0])){
return preg_replace("/\/\/[^\<]+<\/script>/", '</script>', $matches[0]);
}
return '';
}
static function minify_js_in_body($exclude_rules = false){
global $speedycache;
$data = $speedycache->enhanced['html'];
$script_list = array();
$script_start_index = false;
for($i = 0; $i < strlen( $data ); $i++){
if(isset($data[$i - 6])){
if(substr($data, $i - 6, 7) == '<script'){
$script_start_index = $i - 6;
}
}
if(isset($data[$i - 8]) && !empty($script_start_index)){
if(substr($data, $i - 8, 9) == '</script>'){
array_push($script_list, array('start' => $script_start_index, 'end' => $i));
$script_start_index = false;
}
}
}
if(empty($script_list)){
return $speedycache->enhanced['html'];
}
foreach(array_reverse($script_list) as $key => $value){
$script_tag = substr($data, $value['start'], ($value['end'] - $value['start'] + 1));
if(!preg_match("/^<script[^\>\<]+src\=[^\>\<]+>/i", $script_tag) && preg_match("/\/speedycache\-assets\//i", $script_tag)){
continue;
}
preg_match("/src\=[\"\']([^\'\"]+)[\"\']/i", $script_tag, $src);
$http_host = str_replace(array('http://', 'www.'), '', sanitize_text_field($_SERVER['HTTP_HOST']));
if(!isset($src[1])){
continue;
}
if(!preg_match('/'.preg_quote($http_host, '/').'/i', $src[1])){
continue;
}
if(!empty($exclude_rules)){
$is_excluded = false;
foreach((array)$exclude_rules as $exclude_key => $exclude_value){
if(!empty($exclude_value['prefix']) && $exclude_value['type'] === 'js'){
if($exclude_value['prefix'] === 'contain'){
$preg_match_rule = preg_quote($exclude_value['content'], '/');
}
if(preg_match('/'.$preg_match_rule.'/i', $src[1])){
$is_excluded = true;
break;
}
}
}
if(!empty($is_excluded)){
continue;
}
}
// Skip if the file is already minified.
if(strpos($src[1], '.min.') !== FALSE){
continue;
}
if(preg_match("/alexa\.com\/site\_stats/i", $src[1])){
continue;
}
if(preg_match("/wp-spamshield\/js\/jscripts\.php/i", $src[1])){
continue;
}
//amazonjs/components/js/jquery-tmpl/jquery.tmpl.min.js?ver=1.0.0pre
if(preg_match("/jquery-tmpl\/jquery\.tmpl\.min\.js/i", $src[1])){
continue;
}
//<script src="https://server1.opentracker.net/?site=www.site.com"></script>
if(preg_match("/[\?\=].*".preg_quote($http_host, '/').'/i', $src[1])){
continue;
}
$js_file_name = md5($src[1]);
$cache_file_path = WP_CONTENT_DIR.'/'.$speedycache->enhanced['cache_speedycache_minified'].'/'.$js_file_name;
if(!defined('SPEEDYCACHE_WP_CONTENT_URL')){
$js_script = content_url().'/'.$speedycache->enhanced['cache_speedycache_minified'].'/'.$js_file_name;
}else{
$js_script = SPEEDYCACHE_WP_CONTENT_URL.'/'.$speedycache->enhanced['cache_speedycache_minified'].'/'.$js_file_name;
}
$js_script = str_replace(array('http://', 'https://'), '//', $js_script);
$args = array(
'src' => $src[1],
'cache_file_path' => $cache_file_path,
'js_script' => $js_script,
'script_tag' => $script_tag,
'value' => $value
);
self::fetch_and_minify_js($args);
}
return $speedycache->enhanced['html'];
}
static function fetch_and_minify_js($args){
global $speedycache;
$response = wp_remote_get(\SpeedyCache\Enhanced::fix_protocol($args['src']), array('timeout' => 10 ) );
if(empty($response) || is_wp_error($response)){
return false;
}
if(wp_remote_retrieve_response_code($response) != 200){
return false;
}
$js_content = wp_remote_retrieve_body($response);
if(preg_match('/<\/\s*html\s*>\s*$/i', $js_content)){
return false;
}
$minified_js_content = \SpeedyCache\Enhanced::minify_js($js_content);
if(!is_dir($args['cache_file_path'])){
$prefix = time();
\SpeedyCache\Cache::create_dir($args['cache_file_path'], $minified_js_content, 'js');
}
if(file_exists($args['cache_file_path']) && $js_files = @scandir($args['cache_file_path'], 1)){
$new_script = str_replace($args['src'], $args['js_script'].'/'.$js_files[0], $args['script_tag']);
$speedycache->enhanced['html'] = substr_replace($speedycache->enhanced['html'], $new_script, $args['value']['start'], ($args['value']['end'] - $args['value']['start'] + 1));
}
}
static function combine_js_in_footer($minify = false){
global $speedycache;
$footer = strstr($speedycache->enhanced['html'], '<!--SPEEDYCACHE_FOOTER_START-->');
\SpeedyCache\JS::init($footer, $minify);
$tmp_footer = \SpeedyCache\JS::combine();
if(!empty($speedycache->options['render_blocking'])){
\SpeedyCache\RenderBlocking::init($tmp_footer);
$tmp_footer = \SpeedyCache\RenderBlocking::action(false, true);
}
$speedycache->enhanced['html'] = str_replace($footer, $tmp_footer, $speedycache->enhanced['html']);
return $speedycache->enhanced['html'];
}
/* Js Part End */
static function fix_protocol($url){
if(!preg_match('/^\/\//', $url)){
return $url;
}
if(preg_match('/^https:\/\//', home_url())){
return 'https:'.$url;
}
return 'http:'.$url;
}
static function set_html($html){
global $speedycache;
$speedycache->enhanced['html'] = $html;
self::set_head_html();
self::set_body_html();
}
static function set_body_html(){
global $speedycache;
preg_match("/<body(.+)<\/body>/si", $speedycache->enhanced['html'], $out);
if(isset($out[0])){
$speedycache->enhanced['body_html'] = $out[0];
return;
}
$speedycache->enhanced['body_html'] = '';
}
static function set_head_html(){
global $speedycache;
preg_match("/<head(.+)<\/head>/si", $speedycache->enhanced['html'], $out);
if(isset($out[0])){
$speedycache->enhanced['head_html'] = $out[0];
return;
}
$speedycache->enhanced['head_html'] = '';
}
static function delay_js($content){
global $speedycache;
// If Delay js mode is selected and the scripts are empty then return
if(empty($speedycache->options['delay_js_mode']) || (!empty($speedycache->options['delay_js_mode']) && $speedycache->options['delay_js_mode'] == 'selected' && empty($speedycache->options['delay_js_scripts']))){
return $content;
}
$scripts = self::find_tags('<script', '</script>', $content);
if(empty($scripts)){
return $content;
}
foreach($scripts as $tag => $script){
// Dont process a tag without src
$is_inline = false;
if(strpos($script['text'], ' src') === FALSE){
$is_inline = true;
}
// We dont want to delay structured data
if(strpos($script['text'], 'application/ld+json') !== FALSE){
continue;
}
if(strpos($script['text'], 'text/template') !== FALSE){
continue;
}
// Do not delay speculationrule type script.
if(strpos($script['text'], 'speculationrules') !== FALSE){
continue;
}
// Don't delay a module.
if(strpos($script['text'], 'type="module"') !== FALSE){
continue;
}
// Don't touch any import maps as they are meant to be loaded early.
if(strpos($script['text'], 'importmap') !== FALSE){
continue;
}
// We dont want to delay jQuery
if(preg_match('/jquery\./U', $script['text'], $match)){
continue;
}
// Excluding Scripts
if($speedycache->options['delay_js_mode'] == 'all' && !empty($speedycache->options['delay_js_excludes'])){
foreach($speedycache->options['delay_js_excludes'] as $to_delay){
if(empty($to_delay)){
continue;
}
if(strpos($script['text'], trim($to_delay)) !== FALSE){
continue 2;
}
}
}
// Delay Selected Scripts
if($speedycache->options['delay_js_mode'] == 'selected' && !empty($speedycache->options['delay_js_scripts'])){
$script_found = false;
foreach($speedycache->options['delay_js_scripts'] as $to_delay){
if(empty($to_delay)){
continue;
}
if(strpos($script['text'], trim($to_delay)) !== FALSE){
$script_found = true;
break;
}
}
if(empty($script_found)){
continue;
}
}
$new_tag = self::updating_tag($script['text'], $is_inline);
if(!empty($new_tag)){
$content = str_replace($script['text'], $new_tag, $content);
}
}
// Adds the script which loads the JS files on user interaction
self::inject_js($content);
return $content;
}
static function updating_tag($tag, $is_inline){
global $speedycache;
if(preg_match('/src=["\'](.*)["\']/U', $tag, $src)){
return '<script type="speedycache/javascript" data-src="' . esc_url($src[1]) . '"></script>';
}
if($is_inline){
// taking out the attributes
preg_match_all('/<script([^>]+)?>/i', $tag, $matches);
$attributes = [];
// Parsing the attributes
if(!empty($matches)){
foreach($matches[1] as $attr_str){
preg_match_all('/(\w+)(?:=["\']([^"\']*)["\'])?/i', trim($attr_str), $attrs, PREG_SET_ORDER);
foreach($attrs as $attr){
$attributes[$attr[1]] = isset($attr[2]) ? $attr[2] : true;
}
}
}
// Adding our delayjs type
$attributes['type'] = 'speedycache/javascript';
// Rebulding the attributes
$script_attr = '';
foreach($attributes as $name => $value){
$script_attr .= ' ' . esc_attr($name).'="'.esc_attr($value).'"';
}
return preg_replace('/<script([^>]+)?>/i', '<script'.$script_attr.'>', $tag);
}
}
static function inject_js(&$content){
$js = file_get_contents(SPEEDYCACHE_PRO_DIR . '/assets/js/delayjs.min.js');
$js = '<script>'.$js.'</script>';
$content = str_replace('</body>', $js . "\n</body>", $content);
}
static function find_tags($start_string, $end_string, $html = false){
global $speedycache;
if(!empty($html)){
$data = $html;
}
$list = array();
$start_index = false;
$end_index = false;
for($i = 0; $i < strlen($data); $i++){
if(substr($data, $i, strlen($start_string)) == $start_string){
if(!$start_index && !$end_index){
$start_index = $i;
}
}
if(empty($start_index) || $i < $start_index){
continue;
}
if(substr($data, $i, strlen($end_string)) !== $end_string){
continue;
}
$end_index = $i + strlen($end_string) - 1;
$text = substr($data, $start_index, ($end_index - $start_index + 1));
if($html === false){
$tag = self::get_tags($start_index, $text, $end_index);
if($tag !== FALSE){
array_push($list, $tag);
}
}else{
array_push($list, array('start' => $start_index, 'end' => $end_index, 'text' => $text));
}
$start_index = false;
$end_index = false;
}
return $list;
}
// Adds Image dimensions to the images where height and width is not present
// It helps in reducing the Cumulative Layout shift(CLS) as the browser knows how much space to allocate for the image.
static function image_dimensions($content){
if(!function_exists('getimagesize')){
return $content;
}
// Get Images without height and width
$images_regex = '<img(?:[^>](?!height=[\'\"](?:\S+)[\'\"]))*+>|<img(?:[^>](?!width=[\'\"](?:\S+)[\'\"]))*+>';
preg_match_all('/'.$images_regex.'/Uis', $content, $image_matches);
if(empty($image_matches)){
return $content;
}
$images = $image_matches[0];
$site_url = site_url();
foreach($images as $image){
// Get the SRC
if(!preg_match( '/\s+src\s*=\s*[\'"](?<url>[^\'"]+)/i', $image, $src_match)){
continue;
}
$url = $src_match['url'];
$content_dir = defined('SITEPAD') ? 'sitepad-data' : 'wp-content';
// We will proccess image which is uploaded inside wp-content
if(strpos($url, $content_dir) === FALSE || strpos($url, '.svg') !== FALSE || strpos($url, $site_url) === FALSE){
continue;
}
$url = str_replace($site_url, '', $url);
$image_path = str_replace('/'. $content_dir, '', WP_CONTENT_DIR) . $url;
if(!file_exists($image_path)){
continue;
}
$sizes = getimagesize($image_path);
if(empty($sizes)){
continue;
}
preg_match('/<img.*\sheight=[\'\"]?(?<height>[^\'\"\s]+)[\'\"]?.*>/i', $image, $initial_height);
preg_match('/<img.*\swidth=[\'\"]?(?<width>[^\'\"\s]+)[\'\"]?.*>/i', $image, $initial_width);
$dimensions_attr = '';
if(empty($initial_height['height']) && empty($initial_width['width'])){
$dimensions_attr = $sizes[3];
}
if(!empty($initial_height['height']) && empty($dimensions_attr)){
if(!is_numeric($initial_height['height'])){
continue;
}
$ratio = $initial_height['height'] / $sizes[1];
$dimensions_attr = 'width="' . (int) round($sizes[0] * $ratio) . '" height="' . $initial_height['height'] . '"';
}
if(!empty($initial_width['width']) && empty($dimensions_attr)){
if(!is_numeric( $initial_width['width'])){
continue;
}
$ratio = $initial_width['width'] / $sizes[0];
$dimensions_attr = 'width="' . $initial_width['width'] . '" height="' . (int) round($sizes[1] * $ratio) . '"';
}
$changed_image = preg_replace('/\s(height|width)=(?:[\'"]?(?:[^\'\"\s]+)*[\'"]?)?/i', '', $image);
$changed_image = preg_replace('/<\s*img/i', '<img ' . $dimensions_attr, $changed_image);
if(!empty($changed_image)){
$content = str_replace($image, $changed_image, $content);
}
}
return $content;
}
// Lazy Loads HTML elements.
static function lazy_load_html($content){
global $speedycache;
$content = str_replace('</head>', '<style>' . implode(',', $speedycache->options['lazy_load_html_elements']) . '{content-visibility:auto;contain-intrinsic-size:1px 1000px;}</style></head>', $content);
return $content;
}
static function preload_critical_images($content){
global $speedycache;
preg_match_all('#(<picture.*?)?<img([^>]+?)\/?>(?><\/picture>)?#is', $content, $images, PREG_SET_ORDER);
if(empty($images)){
return $content;
}
$count = 0;
$preload_tags = '';
foreach($images as $image){
// Break once the Critical Image Count is reached.
if($count >= $speedycache->options['critical_image_count']){
break;
}
if(strpos($image[0], 'secure.gravatar.com') !== FALSE){
continue;
}
// NOTE:: Will remove this in future, first we will just support <IMG> tag
if(strpos($image[0], '<picture>') !== FALSE){
continue;
}
// Excluding base64 image from preloading.
if(strpos($image[0], ';base64') !== FALSE){
continue;
}
$atts_array = wp_kses_hair($image[2], wp_allowed_protocols());
$atts = [];
foreach($atts_array as $name => $attr){
$atts[$name] = $attr['value'];
}
if(empty($atts['src'])){
continue;
}
// To preload unique images.
if(strpos($preload_tags, $atts['src']) === FALSE){
$preload_tags .= '<link rel="preload" as="image" href="'.esc_attr($atts['src']).'"'. (!empty($atts['srcset']) ? ' imagesrcset="'. esc_attr($atts['srcset']).'"' : '') . (!empty($atts['sizes']) ? 'imagesizes="'.esc_attr($atts['sizes']).'"' : '') . ' />';
}
$count++;
}
if(empty($preload_tags)){
return $content;
}
// If title tag is not there then don't add the preload.
if(strpos($content, '</title>') === FALSE){
return $content;
}
$content = str_replace('</title>', '</title>' . $preload_tags, $content);
return $content;
}
static function pre_connect_hint($urls, $relation_type){
global $speedycache;
if($relation_type !== 'preconnect'){
return $urls;
}
foreach($speedycache->options['pre_connect_list'] as $url) {
if(empty($url) || empty($url['resource'])){
continue;
}
$preconnect = array('href' => $url['resource']);
if(!empty($url['crossorigin'])){
$preconnect['crossorigin'] = 'crossorigin';
}
$urls[] = $preconnect;
}
return $urls;
}
static function preload_resource(){
global $speedycache;
if(empty($speedycache->options['preload_resource_list']) || !is_array($speedycache->options['preload_resource_list'])){
return;
}
$is_mobile = wp_is_mobile();
foreach($speedycache->options['preload_resource_list'] as $preload_resource){
if(empty($preload_resource['resource']) || empty($preload_resource['type'])){
continue;
}
$crossorigin = '';
if(!empty($preload_resource['crossorigin'])){
$crossorigin = 'crossorigin';
}
// Preloading based on the device
// User is required to enable Mobile cache and mobile override to enable this feature.
if(!empty($preload_resource['device']) && !empty($speedycache->options['mobile']) && !empty($speedycache->options['mobile_theme'])){
if(($preload_resource['device'] == 'mobile' && !$is_mobile) || ($preload_resource['device'] == 'desktop' && $is_mobile)){
continue;
}
}
$fetch_priority = '';
if(!empty($preload_resource['fetch_priority'])){
$fetch_priority = 'fetchpriority="'.esc_attr($preload_resource['fetch_priority']).'"';
}
echo '<link rel="preload" href="'.esc_url_raw($preload_resource['resource']).'" as="'.esc_attr($preload_resource['type']).'" '.esc_attr($crossorigin) .' '.$fetch_priority.'/>';
}
}
}
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