json to ruby hash command

jr

#! /usr/bin/env ruby

require 'json'
require 'pp'
require 'optparse'

Option = Struct.new(
  :symbolize
)
o = Option.new(
  false
)

OptionParser.new.tap do |opt|
  opt.on('-s', '--symbolize') do |arg|
    o.symbolize = arg
  end
end.parse!(ARGV)

class Array
  def pretty_print(q)
    q.group_sub {
      q.nest(2) {
        q.text '['
        q.breakable ''
        q.seplist(self) {|v|
          q.pp v
        }
      }
    }
    q.breakable ''
    q.text ']'
  end
end

class Hash
  def pretty_print(q)
    q.group_sub {
      q.nest(2) {
      q.text '{'
      q.breakable ''
        q.seplist(self, nil, :each_pair) do |k, v|
          q.group do
            if k.instance_of?(Symbol)
              q.text k.to_s
              q.text ': '
            else
              q.pp k
              q.text ' => '
            end
            q.group(0) {
              q.pp v
            }
          end
        end
      }
    }
    q.breakable ''
    q.text '}'
  end
end

puts JSON.parse($stdin.read, symbolize_names: o.symbolize).pretty_inspect