class Logger::LogDevice

def set_dev(log)
  if log.respond_to?(:write) and log.respond_to?(:close)
    @dev = log
    if log.respond_to?(:path) and path = log.path
      if File.exist?(path)
        @filename = path
      end
    end
  else
    @dev = open_logfile(log)
    @dev.sync = true
    @dev.binmode if @binmode
    @filename = log
  end
end