module Orthor
  module MetaData
    [ :keywords, :description ].each do |sym|
      class_eval %{
        def #{sym}(*val)
          if val.empty?
            if @#{sym}.nil?
              Orthor::Site.#{sym}
            else
              @#{sym}
            end
          else
            @#{sym} = val.size == 1 ? val[0] : val
          end
        end
      }
    end
  end
end