From: James Edward Gray II <james@...>
Date: 2006-12-13T23:45:15+09:00
Subject: Re: Is there a class that is equivalent to Properties in Java

On Dec 13, 2006, at 6:59 AM, Olivia Dou wrote:

> Is there a class in the ruby lib that is equivalent to Properties  
> class
> in Java?

I think the following code should cover most of the Properties class  
features:

#!/usr/bin/env ruby -w

require "forwardable"
require "yaml"

class Properties
   def self.load(file_path)
     File.open(file_path) { |file| YAML.load(file) }
   end

   def initialize
     @properties = Hash.new
     @defaults   = nil
   end

   attr_accessor :defaults

   extend Forwardable
   def_delegator :@properties, :[]=

   def [](property)
     if @defaults and not @properties.include? property
       @defaults[property]
     else
       @properties[property]
     end
   end

   def save(file_path)
     File.open(file_path, "w") { |file| YAML.dump(self, file) }
   end
end

__END__

Hope that helps.

James Edward Gray II