module Middleman::PreviewServer

def start(opts={})
  @options = opts
  @host = @options[:host] || '0.0.0.0'
  @port = @options[:port] || DEFAULT_PORT
  mount_instance(new_app)
  logger.info "== The Middleman is standing watch at http://#{host}:#{port}"
  logger.info "== Inspect your site configuration at http://#{host}:#{port}/__middleman/"
  @initialized ||= false
  return if @initialized
  @initialized = true
  register_signal_handlers
  # Save the last-used @options so it may be re-used when
  # reloading later on.
  ::Middleman::Profiling.report('server_start')
  loop do
    @webrick.start
    # $mm_shutdown is set by the signal handler
    if $mm_shutdown
      shutdown
      exit
    elsif $mm_reload
      $mm_reload = false
      reload
    end
  end
end