ツイートっぽいっぽい出力を下から上に流すやつ（改行ちゃんと見てない）

tweet_reverser.rb

# -*- coding: utf-8 -*-

require 'curses'

class TweetReverser
  include Curses

  SCREEN_NAME_PATTERN = /@[a-zA-Z0-9_]+/
  COLORS = [COLOR_RED, COLOR_GREEN, COLOR_YELLOW, COLOR_BLUE, COLOR_MAGENTA, COLOR_CYAN]

  def self.start
    new.start
  end

  def initialize
    @tweets = []
    init_screen
    start_color
    COLORS.each do |color|
      init_pair(color, color, COLOR_BLACK)
    end
  end

  def start
    $stdin.each_line do |line|
      @tweets << line
      clear
      @tweets.reverse.each.with_index do |tweet, index|
        setpos(index, 0)
        tweet.split(/(#{SCREEN_NAME_PATTERN})/).each do |word|
          if word =~ SCREEN_NAME_PATTERN
            attron(color_pair(COLORS[word.each_byte.map(&:to_i).inject(&:+) % COLORS.size]))
          else
            attroff(Curses::A_COLOR)
          end
          addstr(word)
        end
        refresh
      end
    end
  ensure
    stop
  end

  def stop
    close_screen
  end
end

TweetReverser.start