Merge branch 'feature/filter-uri-normalization'

PR zendframework/zendframework#2212

src/UriFactory.php

@@ -66,6 +66,23 @@ public static function unregisterScheme($scheme)
         }
     }
 
+    /**
+     * Get the class name for a registered scheme
+     *
+     * If provided scheme is not registered, will return NULL
+     *
+     * @param  string $scheme
+     * @return string|null
+     */
+    public static function getRegisteredSchemeClass($scheme)
+    {
+        if (isset(static::$schemeClasses[$scheme])) {
+            return static::$schemeClasses[$scheme];
+        } else {
+            return null;
+        }
+    }
+
     /**
      * Create a URI from a string
      *