Contents

class Hash

  Inflector = Struct.new :method, :arguments

  def dictionary(parent_key=nil)
    Hash.new.tap do |hash|
      each do |k,v|
        key = [parent_key, k].compact.join('.')
        if v.is_a? Hash
          hash.merge! v.dictionary(key)
        else
          hash[key] = v
        end
      end
    end
  end

  def self.inflectors
    @inflectors ||= []
  end

  def self.inflect(method, *args)
    inflectors << Inflector.new(method, args)
  end

  def self.inflections(key)
    [key.to_s, key.to_s.to_sym].tap do |list|
      inflectors.each do |i|
        k = key.to_s.send i.method, *i.arguments
        list.concat [k, k.to_sym]
      end
    end.uniq
  end

  def inflections
    keys.flat_map{ |k| self.class.inflections(k).map(&:to_sym) }.uniq
  end

  def get(key)
    indiferent_access = [key, key.to_s, key.to_s.to_sym].uniq
    
    indiferent_access.each do |k|
      return self[k] if key?(k)
    end

    Hash[keys.map{ |k| [k, self.class.inflections(k)] }].each do |k,v|
      return self[k] if (v & indiferent_access).any?
    end

    nil
  end

  def method_missing(method, *args, &block)
    return get(method) if inflections.include?(method.to_sym)
    super
  end

end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
core_extended-0.0.10	lib/core_extended/hash.rb
core_extended-0.0.9	lib/core_extended/hash.rb
core_extended-0.0.8	lib/core_extended/hash.rb