TwitterのListからmemberのscreennameをブッコ抜き

Twitter_List_Member.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'nokogiri'
require 'uri'
require 'open-uri'
require 'timeout'

def getScreenName(address)
  p address
  timeout(nil){
    url = URI.escape(address)
    html = Nokogiri::HTML(open(url))
    screen = []
    html.search(".screenname").each { |f|
      screen <<  f.inner_text
    }
    nextpage = html.at("#pagination a")
    screen += getScreenName("http://twitter.com/#{nextpage['href']}") if !nextpage.nil? && nextpage['href'] =~ /(=[^-][\d]+)$/
    screen
  }
end

screen = getScreenName(ARGV[0])
f = open("screen", 'w+')
f.puts screen.to_yaml
f.close