MONGOHQ_URL regex (Scala) which works with username containing dashes

gistfile1.txt

    val regex = """mongodb://(\w+):([\w|-]+)@([\w|\.]+):(\d+)/(\w+)""".r
    url match {
      case Some(regex(u, p, host, port, dbName)) =>
        ConnectionParams(host, port.toInt, dbName, u, p)
      case None => {
        ConnectionParams("127.0.0.1", 27017, "mylocaldb")
      }