適当なコマンドラインパーサ

ライブラリないのかな？

def clp(argv)

  params = {}

  while param = argv.shift

    if param =~ /^-.+/

      param = param.sub("-", "")

      vals = clpvals(argv)

      case vals.length

      when 0

        params[param] = nil

      when 1

        params[param] = vals.first

      else

        params[param] = vals

      end

    end

  end

  return params

end
def clpvals(argv)

  vals = []

  until argv.empty? or argv.first =~ /^-.+/

    vals << argv.shift

  end

  return vals

end