module Hashie::HashExtensions

def self.included(base)
  # Don't tread on existing extensions of Hash by
  # adding methods that are likely to exist.
  %w(stringify_keys stringify_keys!).each do |hashie_method|
    base.send :alias_method, hashie_method, "hashie_#{hashie_method}" unless base.instance_methods.include?(hashie_method)
  end
end

def hashie_stringify_keys
  self.dup.stringify_keys!
end

def hashie_stringify_keys!
  self.keys.each do |k|
    unless String === k
      self[k.to_s] = self.delete(k)
    end
  end
  self
end

def to_mash
  ::Hashie::Mash.new(self)
end