More procedural/less abstraction selecta

selecta.rb

options = Configuration.parse_options(ARGV)
input_lines = $stdin.readlines

File.open("/dev/tty", "r") do |in_file|
  File.open("/dev/tty", "w") do |out_file|
    tty = TTY.new(in_file, out_file)
    screen = Screen.new(tty)
    screen.tty.stty("-echo -icanon")

    config = Configuration.from_inputs(input_lines, options, screen.height)
    search = Search.blank(config)

    # We emit the number of lines we'll use later so we don't clobber whatever
    # was already on the screen.
    config.visible_choices.times { tty.puts }

    while not search.done?
      rendered = Renderer.new(search).render
      start_line = screen.height - search.config.visible_choices - 1

      ansi.hide_cursor!
      screen.write_lines(start_line, rendered.choices)
      screen.move_cursor(start_line, rendered.search_line.length)
      ansi.show_cursor!
      
      search = handle_key(search, tty.get_char)
    end

    # Always move the cursor to the bottom so the next program doesn't draw
    # over whatever we left on the screen.
    screen.move_cursor(screen.height - 1, 0)
        
    screen.tty.stty("#{@original_stty_state}")
    tty.puts
  end
end

unless search.selection == Search::NoSelection
  puts search.selection
end