twJVN.rb

#! /usr/bin/ruby

require "rubygems"
require 'oauth'
require 'rubytter'

require 'rss/1.0'
require 'open-uri'

# 設定ファイルをロードする
# OAuth用の以下4つの変数を定義
# CONSUMER_KEY
# CONSUMER_SECRET
# ACCESS_TOKEN
# ACCESS_SECRET
load "#{ENV['HOME']}/jvn.oauth"

begin
  flg = 0
  slink = nil
  open("jvn.txt",'r') do |lfile|
    lfile.each {|link| slink = link.chop}
  end

  consumer = OAuth::Consumer.new(
      CONSUMER_KEY,
      CONSUMER_SECRET,
      :site => 'http://api.twitter.com'
  )

  token = OAuth::AccessToken.new(
      consumer,
      ACCESS_TOKEN,
      ACCESS_SECRET
  )

  client = OAuthRubytter.new(token)

  open('http://jvn.jp/rss/jvn.rdf') do |http|
    response = http.read
    result = RSS::Parser.parse(response, false)

    result.items.each do |item|
      title = item.title
      link = item.link

      break if link == slink
      if flg == 0
        open("jvn.txt",'w') do |lfile|
          lfile.puts link
        end
        flg = 1
      end
      mess = title + " " + link
      client.update(mess)
      sleep 60
    end
  end
rescue
  print "RuntimeError: ", $!, "\n";
end