Feedparser/encoding change: More general regular expression, set encoding to UTF-8 explicitly

classes/feedparser.php

@@ -22,13 +22,13 @@ class FeedParser {
 
 		// libxml compiled without iconv?
 		if ($error && $error->code == 32) {
-			if (preg_match('/^(<\\?xml .*?)encoding="(.+?)"(.*?\\?>)/', $data, $matches) === 1) {
+			if (preg_match('/^(<\?xml[\t\n\r ].*?encoding=["\'])(.+?)(["\'].*?\?>)/s', $data, $matches) === 1) {
 				libxml_clear_errors();
 
 				$enc = $matches[2];
 
-	         $data = iconv($enc, 'UTF-8//IGNORE', $data);
-	         $data = preg_replace('/^<\\?xml .*?\\?>/', $matches[1] . $matches[3] , $data);
+				$data = iconv($enc, 'UTF-8//IGNORE', $data);
+				$data = preg_replace('/^<\?xml[\t\n\r ].*?\?>/s', $matches[1] . "UTF-8" . $matches[3] , $data);
 
 				$this->doc = new DOMDocument();
 				$this->doc->loadXML($data);