Twitter で相互followしているユーザを表示。Grackleが必要。

check_fof.rb

#!/usr/bin/ruby
#
# gem install grackle
#
# ./check_fof.rb <your_twitter_screen_name>
#

$KCODE = 'u'

require 'rubygems'
require 'grackle'

module Grackle
  class TwitterStruct
    def eql?(other)
      self.id == other.id
    end
    def hash
      self.id
    end
  end
end

client = Grackle::Client.new()

def client.collect_users(what, identity)
  cursor = -1
  users = []
  begin
    result = self.statuses.send(what, { :cursor => cursor }.merge(identity))
    cursor = result.next_cursor
    users += result.users
    $stderr.print "#{users.count}..."
  end while(cursor != 0)
  users
end

screen_name = ARGV.shift || 'autch'

$stderr.print "Getting info for user #{screen_name}..."
my_info = client.users.show?(:screen_name => screen_name)
my_id = my_info.id

$stderr.print " => id #{my_id}\n"

$stderr.print "Collecting followers of id #{my_id}..."
my_followers = client.collect_users(:followers?, { :user_id => my_id })

$stderr.print "done, #{my_followers.count} followers\n"

$stderr.print "Collecting friends of id #{my_id}..."
my_friends = client.collect_users(:friends?, { :user_id => my_id })

$stderr.print "done, #{my_friends.count} friends\n"

fof = (my_followers & my_friends)

fof.each do |f|
  print "#{f.name} (@#{f.screen_name}) #{f.url}\n"
  print "#{f.description}\n"
  print "\n"
end