Compare 2 yaml's in ruby (print matching keys)

yaml_cmp.rb

require 'yaml'

def compare_yaml_hash(cf1, cf2, context = [])
  cf1.each do |key, value|
    if cf2.key?(key)
      puts "Contains key : #{key} in path #{context.join(".")}"
    end

    value2 = cf2[key]
    next unless value2
    if value.is_a?(Hash)
      compare_yaml_hash(value, value2, (context + [key]))
      next
    end
  end
end

f1 = ARGV[0]
f2 = ARGV[1]

compare_yaml_hash(YAML.load_file(f1), YAML.load_file(f2))

# Based on code posted on http://stackoverflow.com/questions/6274126/how-to-compare-keys-in-yaml-files