+ /**
+ * Clean up URL before it's parsed.
+ * ie. handle urlencode, url prefixes, etc.
+ *
+ * @param string $url URL to clean.
+ *
+ * @return string cleaned URL.
+ */
+ protected static function cleanupUnparsedUrl($url)
+ {
+ return self::removeFirefoxAboutReader($url);
+ }
+
+ /**
+ * Remove Firefox Reader prefix if it's present.
+ *
+ * @param string $input url
+ *
+ * @return string cleaned url
+ */
+ protected static function removeFirefoxAboutReader($input)
+ {
+ $firefoxPrefix = 'about://reader?url=';
+ if (startsWith($input, $firefoxPrefix)) {
+ return urldecode(ltrim($input, $firefoxPrefix));
+ }
+ return $input;
+ }
+