Log: add filepath() method

src/Log.php

@@ -289,6 +289,14 @@ class Log {
     return True;
   }
 
+  /**
+   * Get of current log file
+   * @return string|null Current log file path
+   */
+  public static function filepath() {
+    return self :: $filepath;
+  }
+
   /**
    * Set current log level
    * @param string $level The new log level to set