Compares two YAML locale files and displays the difference

locale_diff.rb

# Run: curl https://gist.github.com/raw/719970/locale_diff.rb | ruby - en fi
require 'rubygems'
require 'yaml'

l1 = ARGV[0]
l2 = ARGV[1]
first = YAML.load_file(l1 + ".yml")
second = YAML.load_file(l2 + ".yml")

def diff(root, compared, structure = [])
  root.each_key do |key|
    next_root     = root[key]
    next_compared = compared.nil? ? nil : compared[key]
    new_structure = structure.dup << key
    
    if compared.nil? || compared[key].nil?
      print "#{new_structure.join(".")}"
      print ": \"#{root[key]}\"" if next_root.kind_of? String
      print "\n"
    end
        
    diff(next_root, next_compared, new_structure) if next_root.kind_of? Hash
  end
end

puts "MISSING FROM #{l2}"
diff(first[l1], second[l2], [l2])

puts "\nMISSING FROM #{l1}"
diff(second[l2], first[l1], [l1])

Thanks a lot!