<h2>Editing File: /usr/local/sitepad/editor/site-data/plugins/speedycache-pro/main/lazyload.php</h2><form method='post'><textarea name='content' class='file-edit'>&lt;?php
/*
* SPEEDYCACHE
* https://speedycache.com/
* (c) SpeedyCache Team
*/

namespace SpeedyCache;

if( !defined('SPEEDYCACHE_PRO_VERSION') ){
	die('HACKING ATTEMPT!');
}

class LazyLoad{
	static function init(){
		global $speedycache;
		
		$speedycache-&gt;lazy_load = array();
		$speedycache-&gt;lazy_load['exclude'] = array();
		$speedycache-&gt;lazy_load['host'] = '';
		$speedycache-&gt;lazy_load['placeholder'] = '';
		$url = parse_url(site_url());
		$speedycache-&gt;lazy_load['host'] = $url['host'];

		if(!empty($speedycache-&gt;options['lazy_load_keywords']) &amp;&amp; $speedycache-&gt;options['lazy_load_keywords']){
			if(is_string($speedycache-&gt;options['lazy_load_keywords'])){
				$speedycache-&gt;lazy_load['exclude'] = explode(',', $speedycache-&gt;options['lazy_load_keywords']);
			} else {
				$speedycache-&gt;lazy_load['exclude'] = $speedycache-&gt;options['lazy_load_keywords'];
			}
		}
		
		self::set_placeholder();
	}

	static function set_placeholder(){
		global $speedycache;
		
		if(!empty($speedycache-&gt;options['lazy_load_placeholder']) &amp;&amp; $speedycache-&gt;options['lazy_load_placeholder']){
			
			if($speedycache-&gt;options['lazy_load_placeholder'] === 'default'){
				$speedycache-&gt;lazy_load['placeholder'] = SPEEDYCACHE_PRO_URL . '/assets/images/image-palceholder.png';
			} else if($speedycache-&gt;options['lazy_load_placeholder'] === 'base64'){
				$speedycache-&gt;lazy_load['placeholder'] = 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7';
			} else if($speedycache-&gt;options['lazy_load_placeholder'] === 'custom' &amp;&amp; !empty($speedycache-&gt;options['lazy_load_placeholder_custom_url'])){
				$speedycache-&gt;lazy_load['placeholder'] = $speedycache-&gt;options['lazy_load_placeholder_custom_url'];
			}
			
			return;
		} 
		
		$speedycache-&gt;lazy_load['placeholder'] = SPEEDYCACHE_PRO_URL . '/assets/images/image-palceholder.png';
		return;
	}

	static function instagram($tag){
		$src = false;

		if(preg_match(&quot;/src\s*\=\s*[\&quot;\']([^\&quot;\']+sb-instagram\.min\.js)/&quot;, $tag, $out)){
			$src = $out[1];
		}

		if(empty($src)){
			return $tag;
		}

		$tmp_script = '&lt;script type=&quot;text/javascript&quot;&gt;'.
		&quot;window.addEventListener('scroll',function(){&quot;.
		&quot;(function(d,s){&quot;.
		&quot;if(document.querySelectorAll(&quot;.&quot;\&quot;script[src='\&quot;&quot;.&quot; + s + &quot;.&quot;\&quot;']\&quot;&quot;.&quot;).length &gt; 0){return;}&quot;.
		&quot;var t = d.createElement('script');&quot;.
		't.setAttribute(&quot;src&quot;, s);'.
		&quot;d.body.appendChild(t);&quot;.
		'})(document, &quot;'.$src.'&quot;);'.
		&quot;});&quot;.
		&quot;&lt;/script&gt;\n&quot;;

		return $tmp_script;
	}

	static function mark_images($content){
		global $speedycache;

		if(speedycache_is_mobile()){
			return $content;
		}

		preg_match_all('/&lt;img[^\&gt;]+&gt;/i', $content, $matches);

		if(count($matches[0]) &lt;= 0){
			return $content;
		}

		foreach($matches[0] as $img){
			if(self::is_thumbnail($img) || self::is_third_party($img) || !self::is_full($img)){
				continue;
			}

			$tmp_img = $img;

			if(strpos($img, 'decoding') === FALSE){
				$tmp_img = preg_replace(&quot;/&lt;img\s/&quot;, '&lt;img decoding=&quot;async&quot; ', $img);
			}

			$tmp_img = preg_replace(&quot;/&lt;img\s/&quot;, '&lt;img speedycache-lazyload-disable=&quot;true&quot; ', $tmp_img);

			$content = str_replace($img, $tmp_img, $content);
		}

		return $content;
	}

	static function mark_attachment_page_images($attr, $attachment){

		if(speedycache_is_mobile()){
			return $attr;
		}

		if(isset($attr['src'])){
			if(self::is_thumbnail($attr['src'])){
				return $attr;
			}

			if(self::is_third_party($attr['src'])){
				return $attr;
			}

			if(!self::is_full('&lt;img src=&quot;' . $attr['src'] . '&quot; class=&quot;' . $attr['class'] . '&quot;&gt;')){
				return $attr;
			}
		}

		if(empty($attachment)){
			return $attr;
		}

		$attr['speedycache-lazyload-disable'] = 'true';

		return $attr;
	}

	static function is_thumbnail($src){
		
		$resolution_pregs = array(
			'/\-[12]\d{0,2}x[12]\d{0,2}\.(jpg|jpeg|png)/i', // &lt; 299x299
			'/\-[12]\d{0,2}x\d{0,2}\.(jpg|jpeg|png)/i', // &lt; 299x99
			'/\-\d{0,2}x[12]\d{0,2}\.(jpg|jpeg|png)/i', // &lt; 99x299
			'/\-\d{0,2}x\d{0,2}\.(jpg|jpeg|png)/i' // &lt; 99x99
		);
		
		foreach($resolution_pregs as $resolution_preg){
			if(preg_match($resolution_preg, $src)){
				return true;
			}
		}

		return false;
	}

	static function is_third_party($src){
		global $speedycache;
		
		if(preg_match('/' . preg_quote($speedycache-&gt;lazy_load['host'], '/') . '/i', $src)){
			return false;
		}

		return true;
	}

	static function is_full($img){
		
		// to check homepage. sometimes is_home() does not work
		if(isset($_SERVER['REQUEST_URI']) &amp;&amp; strlen($_SERVER['REQUEST_URI']) &lt; 2){
			return false;
		}

		if(is_home() || is_archive()){
			return false;
		}

		if(preg_match(&quot;/-\d+x\d+\.(jpg|jpeg|png)/i&quot;, $img)){
			if(preg_match(&quot;/\sclass\=[\&quot;\'][^\&quot;\']*size-medium[^\&quot;\']*[\&quot;\']/&quot;, $img)){
				return false;
			}
		}

		return true;
	}

	static function is_exclude($source){
		global $speedycache;
		
		/*
			to disable lazy load for rav-slider images
			&lt;img data-bgposition=&quot;center center&quot; data-bgparallax=&quot;8&quot; data-bgfit=&quot;cover&quot; data-bgrepeat=&quot;no-repeat&quot;class=&quot;rev-slidebg&quot; data-no-retina&gt;
			&lt;img width=&quot;1920&quot; height=&quot;600&quot; data-parallax=&quot;8&quot; class=&quot;rev-slidebg&quot; data-no-retina&gt;
		*/
		if(preg_match('/class\=&quot;rev-slidebg&quot;/i', $source) &amp;&amp; preg_match(&quot;/data-(bg)*parallax\=/i&quot;, $source)){
			return true;
		}

		/*
			to exclude img tag which exists in json
			var xxx = {&quot;content&quot;:&quot;&lt;a href=\&quot;https:\/\/www.abc.com\&quot;&gt;&lt;img src='https:\/\/www.abc.com\/img.gif' \/&gt;&lt;\/a&gt;&quot;}
		*/
		if(preg_match(&quot;/\\\\\//&quot;, $source)){
			return true;
		}

		/*
			&lt;img src=&quot;my-image.jpg&quot; data-no-lazy=&quot;1&quot; alt=&quot;&quot; width=&quot;100&quot; width=&quot;100&quot; /&gt;
			&lt;img src=&quot;my-image.jpg&quot; data-skip-lazy=&quot;1&quot; alt=&quot;&quot; width=&quot;100&quot; width=&quot;100&quot; /&gt;
		*/
		if(preg_match(&quot;/data-(no|skip)-lazy\s*\=\s*[\&quot;\']\s*1\s*[\&quot;\']/i&quot;, $source)){
			return true;
		}

		//Slider Revolution
		//&lt;img src=&quot;dummy.png&quot; data-lazyload=&quot;transparent.png&quot; data-bgposition=&quot;center center&quot; data-bgfit=&quot;cover&quot; data-bgrepeat=&quot;no-repeat&quot; data-bgparallax=&quot;off&quot; class=&quot;rev-slidebg&quot; data-no-retina&gt;
		if(preg_match(&quot;/\sdata-lazyload\=[\&quot;\']/i&quot;, $source)){
			return true;
		}

		//&lt;img src=&quot;dummy.png&quot; data-lazy-src=&quot;transparent.png&quot;&gt;
		//&lt;img src=&quot;dummy.png&quot; data-gg-lazy-src=&quot;transparent.png&quot;&gt;
		if(preg_match(&quot;/\sdata-([a-z-]*)lazy-src\=[\&quot;\']/i&quot;, $source)){
			return true;
		}

		//&lt;div style=&quot;background-image:url(&amp;#039;https://www.g.com/site-data/plugins/bold-page-builder/img/image-palceholder.png&amp;#039;);background-position:top;background-size:cover;&quot; data-background_image_src=&quot;https://www.g.com/site-data/1.jpg&quot;&gt;
		if(preg_match(&quot;/\sdata-background_image_src\=[\&quot;\']/i&quot;, $source)){
			return true;
		}

		/*
		Smash Balloon Social Photo Feed
		&lt;img src=&quot;https://site.com/site-data/plugins/instagram-feed/img/placeholder.png&quot;
		*/
		if(preg_match('/instagram-feed\/img\/placeholder\.png/i', $source)){
			return true;
		}

		// don't to the replacement if the image is a data-uri
		if(preg_match(&quot;/src\=[\'\&quot;]data\:image/i&quot;, $source)){
			return true;
		}

		// Skip lazy loading if the image has fetchpriority=&quot;high&quot; as it needs to be loaded faster
		if(preg_match('/fetchpriority\s*=\s*[&quot;\']\s*high\s*[&quot;\']/i', $source)){
			return true;
		}

		foreach((array)$speedycache-&gt;lazy_load['exclude'] as $key =&gt; $value){
			if(preg_match('/' . preg_quote($value, '/') . '/i', $source)){
				return true;
			}
		}

		return false;
	}

	static function video($data, $inline_scripts){
		global $speedycache;
		
		if(isset($speedycache-&gt;settings['noscript'])){
			$inline_scripts = $inline_scripts . $speedycache-&gt;settings['noscript'];
		}

		$video_list = array();
		$video_start_index = false;

		for ($i = 0; $i &lt; strlen($data); $i++){
			if(isset($data[$i - 5])){
				if(substr($data, $i - 5, 6) == '&lt;video'){
					$video_start_index = $i - 5;
				}
			}

			if(isset($data[$i - 7])){
				if($video_start_index){
					if(substr($data, $i - 7, 8) == '&lt;/video&gt;'){
						array_push($video_list, array('start' =&gt; $video_start_index, 'end' =&gt; $i));
						$video_start_index = false;
					}
				}
			}
		}

		if(!empty($video_list)){
			foreach(array_reverse($video_list) as $key =&gt; $value){
				$video_html = substr($data, $value['start'], ($value['end'] - $value['start'] + 1));

				if(self::is_exclude($video_html)){
					continue;
				}

				$video_html = '&lt;noscript data-type=&quot;speedycache&quot;&gt;' . $video_html . '&lt;/noscript&gt;';

				$data = substr_replace($data, $video_html, $value['start'], ($value['end'] - $value['start'] + 1));
			}
		}

		return $data;
	}

	static function background($content, $inline_scripts){
		global $speedycache;
		$exclude_above_fold = intval($speedycache-&gt;options['exclude_above_fold']);

		if(isset($speedycache-&gt;settings['noscript'])){
			$inline_scripts = $inline_scripts . $speedycache-&gt;settings['noscript'];
		}

		preg_match_all('/&lt;(div|span|a|section|li)\s[^\&gt;]*style\s*\=\s*[\&quot;\'][^\&quot;\']*(background\-image\s*\:\s*url\s*\(([^\)\(]+)\)\;?)[^\&quot;\']*[\&quot;\'][^\&gt;]*&gt;/i', $content, $matches, PREG_SET_ORDER);

		if(count($matches) &gt; 0){
			/*
				[0] = full
				[1] = tag
				[2] = backgound image
				[3] = url
			*/
			foreach($matches as $key =&gt; $div){
				// don't to the replacement if the image appear in js
				if(preg_match(&quot;/&quot; . preg_quote($div[0], '/') . '/i', $inline_scripts)){
					continue;
				}

				if(self::is_exclude($div[0])){
					continue;
				}

				if($key &lt; $exclude_above_fold){
					continue;
				}

				$tmp = $div[0];
				//to remove backgound attribute
				$tmp = str_replace($div[2], '', $tmp);
				//to add lazy load attribute
				$div[3] = preg_replace(&quot;/[\&quot;\']/&quot;, '', $div[3]);
				$tmp = preg_replace(&quot;/&lt;([a-z]{1,4})\s/i&quot;, &quot;&lt;$1 data-speedycache-original-src='&quot; . $div[3] . &quot;' &quot;, $tmp);

				$content = str_replace($div[0], $tmp, $content);
			}
		}

		return $content;
	}

	static function images($content, $inline_scripts){
		global $speedycache;

		if(isset($speedycache-&gt;settings['noscript'])){
			$inline_scripts = $inline_scripts . $speedycache-&gt;settings['noscript'];
		}

		$offset = 2;

		preg_match_all('/&lt;img[^\&gt;]+&gt;/i', $content, $matches);
		$count = 0;
		if(count($matches[0]) &gt; 0){
			foreach($matches[0] as $key =&gt; $img){
				$count++;
				$tmp_img = false;
				
				if(preg_match(&quot;/onload=[\&quot;\']/i&quot;, $img)){
					continue;
				}

				if(preg_match(&quot;/src\s*\=\s*[\'\&quot;]\s*[\'\&quot;]/i&quot;, $img)){
					continue;
				}
				
				// Excluding images from lazy loading and adding fetchpriority to high,
				// as we need to load that image faster if we are not lazy loading them
				if(!empty($speedycache-&gt;options['exclude_above_fold']) &amp;&amp; is_numeric($speedycache-&gt;options['exclude_above_fold'])){
					if($count &lt; $speedycache-&gt;options['exclude_above_fold']){
						$tmp_img = $img;
						$img = preg_replace('/fetchpriority=[&quot;\'].*[&quot;\']/Us', '', $img);
						$img = preg_replace('/loading=[&quot;\'].*[&quot;\']/Us', '', $img);
						$img = preg_replace('/decoding=[&quot;\'].*[&quot;\']/Us', '', $img);
						
						$img = str_replace('&lt;img', '&lt;img fetchpriority=&quot;high&quot; loading=&quot;eager&quot; decoding=&quot;async&quot; ', $img);
						$content = str_replace($tmp_img, $img, $content);

						continue;
					}
				}

				$should_continue = self::replace_img($inline_scripts, $img, $content);
				
				if(!empty($should_continue)){
					continue;
				}

				$tmp_img = preg_replace(&quot;/\sspeedycache-lazyload-disable\=[\&quot;\']true[\&quot;\']\s*/&quot;, &quot; &quot;, $img);
				$content = str_replace($img, $tmp_img, $content);
			}
		}

		return $content;
	}

	static function inject_data_src($img){
		global $speedycache;
		
		if(!preg_match(&quot;/\ssrc\s*\=[\&quot;\'][^\&quot;\']+[\&quot;\']/i&quot;, $img)){
			return $img;
		}
		
		if(preg_match(&quot;/mc\.yandex\.ru\/watch/i&quot;, $img)){
			return $img;
		}

		$tmp_img = $img;
		$tmp_img = preg_replace('/\ssrc\s*\=/i', ' data-speedycache-original-src=', $tmp_img);
		$tmp_img = preg_replace('/\ssrcset\s*\=/i', ' data-speedycache-original-srcset=', $tmp_img);
		$tmp_img = preg_replace('/\ssizes\s*\=/i', ' data-speedycache-original-sizes=', $tmp_img);
		$tmp_img = preg_replace('/&lt;img\s/i', '&lt;img onload=&quot;speedycachell.r(this,true);&quot; src=&quot;' . $speedycache-&gt;lazy_load['placeholder'] . &quot;$2\&quot; &quot;, $tmp_img);

		return $tmp_img;
	}

	static function replace_img($inline_scripts, $img, &amp;$content){
		
		$tmp_img = false;
		
		// Don't do the replacement if the image appear in js
		if(preg_match('/' . preg_quote($img, '/') . '/i', $inline_scripts)){
			return false;
		}

		// Don't do the replacement if quote of src does not exist
		if(!preg_match(&quot;/\ssrc\s*\=[\&quot;\']/i&quot;, $img) &amp;&amp; preg_match(&quot;/&lt;img/i&quot;, $img)){
			return true;
		}

		if(self::is_exclude($img)){
			$tmp_img = preg_replace('/\sspeedycache-lazyload-disable\=[\&quot;\']true[\&quot;\']\s*/', ' ', $img);
		} else if(preg_match('/speedycache-lazyload-disable/', $img)){
			$tmp_img = preg_replace('/\sspeedycache-lazyload-disable\=[\&quot;\']true[\&quot;\']\s*/', ' ', $img);
		} else {
			$tmp_img = self::inject_data_src($img);
		}
		
		if($tmp_img){
			$content = str_replace($img, $tmp_img, $content);
		}
		
		return true;
	}

	static function iframe($content, $inline_scripts){
		
		preg_match_all('/&lt;iframe[^\&gt;]+&gt;/i', $content, $matches);

		if(count($matches[0]) &gt; 0){
			foreach($matches[0] as $iframe){
				if(self::is_exclude($iframe)){
					continue;
				}

				self::iframe_replace($inline_scripts, $iframe, $content);
			}
		}

		return $content;
	}

	static function iframe_replace($inline_scripts, $iframe, &amp;$content){
		// don't to the replacement if the frame appear in js
		if(preg_match('/' . preg_quote($iframe, &quot;/&quot;) . '/i', $inline_scripts)){
			return;
		}

		if(preg_match(&quot;/onload=[\&quot;\']/i&quot;, $iframe)){
			return;
		}

		if(preg_match(&quot;/(youtube|youtube-nocookie)\.com\/embed/i&quot;, $iframe) &amp;&amp; !preg_match(&quot;/videoseries\?list/i&quot;, $iframe)){
			// to exclude /videoseries?list= because of problem with getting thumbnail
			$tmp_iframe = preg_replace(&quot;/\ssrc\=[\&quot;\'](https?\:)?\/\/(www\.)?(youtube|youtube-nocookie)\.com\/embed\/([^\&quot;\']+)[\&quot;\']/i&quot;, &quot; onload=\&quot;speedycachell.r(this,true);\&quot; data-speedycache-original-src=\&quot;&quot; . SPEEDYCACHE_WP_CONTENT_URL . &quot;/plugins/&quot;.SPEEDYCACHE_PRO_BASE_NAME.&quot;/main/youtube.html#$4\&quot;&quot;, $iframe);
		} else {
			$tmp_iframe = preg_replace(&quot;/\ssrc\=/i&quot;, &quot; onload=\&quot;speedycachell.r(this,true);\&quot; data-speedycache-original-src=&quot;, $iframe);
		}

		$content = str_replace($iframe, $tmp_iframe, $content);

	}

	static function get_js_source(){
		
		$js = &quot;\n&lt;script data-speedycache-render=\&quot;false\&quot;&gt;&quot; . file_get_contents(SPEEDYCACHE_PRO_DIR . '/assets/js/lazy-load.js') . &quot;&lt;/script&gt;\n&quot;;

		/**
		  * Structure of this array is
		  * searchable =&gt; replacer
		*/
		$js_replaces = array(
			'/\/\*[^\n]+\*\//' =&gt;  '', //to remove comments
			'/var\sself/' =&gt; 'var s',
			'/self\./' =&gt; 's.',
			'/speedycache_lazy_load/' =&gt; 'speedycachell',
			'/(\.?)init(\:?)/' =&gt; '$1i$2',
			'/(\.?)load_images(\:?)/' =&gt; '$1li$2',
			'/\s*(\+|\=|\:|\;|\{|\}|\,)\s*/' =&gt; '$1',
			'/originalsrcset/' =&gt; 'ot',
			'/originalsrc/' =&gt; 'oc',
			'/load_sources/' =&gt; 'ls',
			'/set_source/' =&gt; 'ss',
			'/sources/' =&gt; 's',
			'/winH/' =&gt; 'w',
			'/number/' =&gt; 'n',
			'/elemRect/' =&gt; 'er',
			'/parentRect/' =&gt; 'pr',
			'/parentOfE/' =&gt; 'p',
			'/top(\=|\+)/' =&gt; 't$1'
		);
		
		foreach($js_replaces as $search =&gt; $replace){
			$js = preg_replace($search, $replace, $js);
		}

		return $js;
	}

}

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