gistfile1.rb

entries = Atom::Feed.load_feed(URI.parse("https://speakerdeck.com/u/xenji.atom"))
    base_url = "https://speakerdeck.com"
    path = "/oembed.json?url="
    @embeds = []

    entries.each_entry do |entry|
      link = entry.links.alternate.to_s.sub "https", "http"
      fullpath = path + CGI.escape(link)

      uri = URI.parse(base_url +  fullpath)
      http = Net::HTTP.new(uri.host, uri.port)
      http.use_ssl = true
      http.verify_mode = OpenSSL::SSL::VERIFY_NONE

      request = Net::HTTP::Get.new(uri.request_uri)
      response = http.request(request)
      json = response.body
      @embeds.push ActiveSupport::JSON.decode(json)