# File webapp.rb, line 186
  def resource_path(arg)
    path = Pathname.new(arg)
    raise ArgumentError, "absolute path: #{arg.inspect}" if !path.relative?
    path.each_filename {|f|
      raise ArgumentError, "path contains .. : #{arg.inspect}" if f == '..'
    }
    @manager.resource_basedir + path
  end