fixed img srcset

Author: Athlon1600

src/Plugin/ProxifyPlugin.php

@@ -174,6 +174,25 @@ public function onCompleted(ProxyEvent $event){
 		// src= and href=
 		$str = preg_replace_callback('@(?:src|href)\s*=\s*(["|\'])(.*?)\1@is', array($this, 'html_attr'), $str);
 
+		// img srcset
+		$str = preg_replace_callback('/srcset=\"(.*?)\"/i', function($matches){
+			$src = $matches[1];
+			
+			// url_1 1x, url_2 4x, ...
+			$urls = preg_split('/\s*,\s*/', $src);
+			foreach($urls as $part){
+				
+				// TODO: add str_until helper
+				$pos = strpos($part, ' ');
+				if($pos !== false){
+					$url = substr($part, 0, $pos);
+					$src = str_replace($url, proxify_url($url, $this->base_url), $src);
+				}
+			}
+			
+			return 'srcset="'.$src.'"';
+		}, $str);
+		
 		// form
 		$str = preg_replace_callback('@<form[^>]*action=(["\'])(.*?)\1[^>]*>@i', array($this, 'form_action'), $str);
 

src/Proxy.php

@@ -36,7 +36,7 @@ public function setOutputBuffering($output_buffering){
 	}
 
 	private function header_callback($ch, $headers){
-	
+
 		$parts = explode(":", $headers, 2);
 
 		// extract status code

src/helpers.php

@@ -68,15 +68,11 @@ function app_url(){
 }
 
 function render_string($str, $vars = array()){
-
 	preg_match_all('@{([a-z0-9_]+)}@s', $str, $matches, PREG_SET_ORDER);
 
 	foreach($matches as $match){
-	
 		extract($vars, EXTR_PREFIX_ALL, "_var");
-		
 		$var_val = ${"_var_".$match[1]};
-		
 		$str = str_replace($match[0], $var_val, $str);
 	}