wordpress_to_tumblr.rb

require 'rubygems'
require 'active_record'
require 'net/http'
require 'uri'

email = "YOUR_EMAIL_HERE"
password = "YOUR_PASSWORD_HERE"

ActiveRecord::Base.establish_connection(:adapter => "mysql", :socket => "/tmp/mysql.sock", :user => "root", :password => "root", :database => "YOUR_DATABASE_HERE")
results = ActiveRecord::Base.connection.execute("SELECT * FROM `wp_posts` WHERE post_type = 'post' and post_status='publish' order by post_date asc;")

results.each do |result|
  options = {
    :email => email, 
    :password => password, 
    :type => "text", 
    :title => result[5], 
    :date => result[3], 
    :body => result[4], 
    :generator => "Cairo Noleto"
  }
  puts "Upload post #{result[0]}."
  res = Net::HTTP.post_form(URI.parse('http://www.tumblr.com/api/write'), options)
  puts "Done. New post ID: #{res.body}"
  puts ""
end