Timeline上の t.co を展開して表示する Earthquake.gem プラグイン

expand_tco.rb

require "open-uri"
require "openssl"

Earthquake.init do
  output_filter do |item|
    next unless item['text']
    text = item["text"]
    text = item['retweeted_status']['text'] unless item['retweeted_status'].nil? 
    text.scan( /https?:\/\/t\.co\/[a-zA-Z0-9\-]+/ ).each do |url|
      uri = URI.parse url
      if uri.port==80
        Net::HTTP::start( uri.host , uri.port ) do |connection|
          connection.request_get uri.path do |response|
            text.gsub! url , response['Location']
          end
        end
      elsif uri.port==443
        begin
          open(uri, :ssl_verify_mode => OpenSSL::SSL::VERIFY_NONE) do |file|
            text.gsub! url ,file.base_uri.to_s
          end
        rescue Exception => e
          puts "#{e}".c(43, 91)
          # RuntimeError: redirection forbidden
          # - https://vimeo.com => http://vimeo.com
          # - https://soundcloud.com => http://soundcloud.com
          
          # OpenURI::HTTPError: 404 Not Found
          # - https://t.co/redirect?url=xxxxx
          
        end
      end
    end
    text
  end
end
# TODO verify certificate
# https://gist.github.com/milligramme/5149099