populate hash with command line arguments in the form of ./script.rb key=value key.key=value key.key.key=value

gistfile1.rb

#!/usr/bin/ruby

require 'rubygems'
require 'json'

h = {}

ARGV.each do |a|
  position = ObjectSpace._id2ref(h.object_id)
  keys,value = a.split('=')
  keys = keys.split('.')
  while key = keys.shift do
    if keys.length > 0
      if position["#{key}"].nil?
        position["#{key}"] = Hash.new
      end
      position = ObjectSpace._id2ref(position["#{key}"].object_id)
    else
      position["#{key}"] = value
    end
  end
end
puts JSON.pretty_generate(h)