sib.rb

require 'rubygems'
require 'open-uri'
require 'feed-normalizer'
require 'mirrored'
require 'json'

class YahooTermExtractor
  def self.api_id=(value)
    @@api_id = value
  end
  def self.terms(context, query)
    url = URI.parse('http://search.yahooapis.com/ContentAnalysisService/V1/termExtraction')
    post_args = {'appid' => @@api_id, 'context' => context, 'query' => query, 'output' => 'json'}
    begin
      response, data = Net::HTTP.post_form(url, post_args)
      parsed_data = JSON.parse(data)
      parsed_data['ResultSet']['Result'] if parsed_data
    rescue Exception
      return nil
    end
  end
end

class SharedItemsBookmarker
  def initialize(feed_url, username, password)
    @feed_url = feed_url
    Mirrored::Base.establish_connection(:delicious, username, password)
    @username = username
    @password = password
  end
  
  def post_bookmarks!
    feed = FeedNormalizer::FeedNormalizer.parse open(@feed_url)
    feed.entries.each do |entry|
      bookmark_entry!(entry)
    end
  end
  
  def bookmark_entry!(entry)
    puts "bookmarking: #{entry.title} #{entry.url}"
    if Mirrored::Post.find(:get, :url => entry.url).empty?
      post = Mirrored::Post.new
      post.url = entry.url
      post.description = entry.title
      terms = YahooTermExtractor.terms(entry.content, entry.title)
      post.tags = terms if terms
      puts post.save ? 'Saved' : "ERROR!"
    end
  end
end

# Change this parameters

# You can get a new one here: http://developer.yahoo.com/wsregapp/
YahooTermExtractor.api_id = "your-app-api-id"
# Change with your own feed url
feed_url = "http://www.google.com/reader/public/atom/user/16082959894154758135/state/com.google/broadcast"
# Change with your delicious' username and password
sib = SharedItemsBookmarker.new(feed_url, 'username', 'password')
# Do the magic!
sib.post_bookmarks!