Ruby script to export Twitter favorites to a CSV file

exportTwitterFavorites.rb

#!/usr/bin/ruby -w
# author: rgollapudi
# description: Script to fetch all your twitter favorites and write them to a csv file

require 'open-uri'
require 'rss/1.0'
require 'rss/2.0'

# For reading rss from a url:
# refer http://benwoodall.com/2010/10/ruby-rss-parser/
#

# Open a file for exporting all favorites from the rss
$i = 1
$csv = File.open('mytwitfavs.csv', 'w')
$username = 'rajeshgollapudi'

#
# gets 20 favorites from twitter rss
#
def getfavorites
  url = "http://twitter.com/favorites/#{$username}.rss"
  unless $i == 1
    url = url+"?page=#{$i}"
  end
  puts "url : " + url
  content = ''
  open(url) do |parse|
    content = parse.read
  end

  rss = RSS::Parser.parse(content, false)
  return rss
end

def writefavorites(rss)
  # Output the feeds title, URL, and number of entries
  puts "=================================="
  puts "Title: #{rss.channel.title}"
  puts "URL: #{rss.channel.link}"
  puts "Total Entries: #{rss.items.size}"
  puts "=================================="

  # Setup to read feed and parse all items
  # Change for this: parse top 5 posts, ask if more, (Y/N?), get/end

  rss.items.each do |item|
     puts "Title: #{item.title}"
     puts "Published: #{item.date}"
  #     puts "#{item.description}"
     puts "=================================="
     $csv << ["#{item.title}", "#{item.date}\n"]
  end
end
#
# => write the fetched rss to a file
#
rss = getfavorites() # => call once to initialize the loop
size = rss.items.size
writefavorites(rss)
while size > 0
  $i += 1
  rss = getfavorites()
  size = rss.items.size
  writefavorites(rss)
end

# close the file handle
$csv.close()