Extract Deps in Ruby

Extract Deps

#!/usr/bin/env ruby

require 'rubygems'
require 'gems'
require 'json'

class Package < Struct.new(:name, :language, :version, :hash, :source, :homepage, :depends)
end

class Dependencies < Struct.new(:hostmake, :make, :runtime)
end

class Struct
  def to_map
    map = Hash.new
    self.members.each { |m| map[m] = self[m] }
    map
  end

  def to_json(*a)
    to_map.to_json(*a)
  end
end

class Traverser
  attr_accessor :memo
  def initialize
    @memo = Hash.new
  end

  def data(gem)
    res = Package.new(gem["name"], "ruby", gem["version"], gem["sha"], gem["source_code_uri"], gem["homepage_uri"], nil)
    res.depends = Dependencies.new(
      gem['dependencies']['development'].map { |e| e['name'] },
      nil,
      gem['dependencies']['runtime'].map { |e| e['name'] }
    )
    res
  end

  def traverse(name)
    gem = Gems.info name
    memo[name] = data gem

    deps = gem["dependencies"]
    #deps["development"].each do |dep|
    #  p @memo.keys
    #  unless @memo[dep["name"]]
    #    gem = Gems.info dep["name"]
    #    traverse(dep["name"])
    #  end
    #end
    deps["runtime"].each do |dep|
      p @memo.keys
      unless @memo[dep["name"]]
        gem = Gems.info dep["name"]
        traverse(dep["name"])
      end
    end
  end
end

t = Traverser.new

t.traverse ARGV[0]

puts t.memo.to_json