Update a chef databag from a ruby hash

#!/usr/local/bin/ruby

require 'rubygems'
require 'chef/data_bag'
require 'chef/data_bag_item'

Chef::Config.from_file(File.join(ENV['HOME'], '.chef', 'knife.rb'))

puts "Usage: bagger <bag> <source_file>" unless ARGV[0] && ARGV[1]

begin
  bag = ARGV[0]
  data = eval File.read(ARGV[1])
rescue Exception => e
  STDERR.puts "Unable to load external data: #{e}"
end

print "Databag: #{bag} "

begin
  @data_bag = Chef::DataBag.cdb_load(bag)
  puts "loaded."
rescue Chef::Exceptions::CouchDBNotFound
  @data_bag = Chef::DataBag.new
  @data_bag.name(bag)
  @data_bag.cdb_save
  puts "created."
end

data.each do |name, item|
  item["id"] = name.to_s.gsub(/\//, "_")

  print " => #{item['id']} "

  begin	     
    @data_bag_item = Chef::DataBagItem.cdb_load(bag, item["id"])
    @data_bag_item.raw_data = item
    puts "updated. (#{@data_bag_item.cdb_save})"
  rescue Chef::Exceptions::CouchDBNotFound
    @data_bag_item = Chef::DataBagItem.new
    @data_bag_item.data_bag(bag)
    @data_bag_item.raw_data = item
    puts "created. (#{@data_bag_item.cdb_save})"
  end
end