ツイッターボットでアラブ人を自動フォロバしない。 ref: http://qiita.com/naniwaKun/items/f159d1e80f1fd4fb2fba

bot.rb

require "twitter"
require 'json'

USERNAME = "********"

client = Twitter::REST::Client.new do |config|
  config.consumer_key        = "********"
  config.consumer_secret     = "********"
  config.access_token        = "********"
  config.access_token_secret = "********"
end
client_streaming = Twitter::Streaming::Client.new do |config|
  config.consumer_key        = "********"
  config.consumer_secret     = "********"
  config.access_token        = "********"
  config.access_token_secret = "********"
end

client_streaming.user do |object|
  case object
  when Twitter::Tweet
      username = object.user.screen_name
    if (/おはよ/ =~ object.text) && !(/RT/ =~ object.text) && ( username != USERNAME )
##タイムラインに「おはよ」が現れたときの処理を書く。
    end
  when Twitter::Streaming::Event
    if(object.name == "follow".to_sym) && (object.source.id != ********)
##日本語の正規表現
        regex = /[\p{Han}\p{Hiragana}\p{Katakana}，．、。ー・]+/
        profile = client.user(object.source.id).description
        japanese_arr = profile.scan(regex)
##日本語のプロフィールだけフォロバ
        unless (japanese_arr.empty?)
                client.follow(object.source.id)
        end
    end
  end
end