class Bundler::Dsl

def source(source, *args, &blk)
  options = args.last.is_a?(Hash) ? args.pop.dup : {}
  options = normalize_hash(options)
  source = normalize_source(source)
  if options.key?("type")
    options["type"] = options["type"].to_s
    unless Plugin.source?(options["type"])
      raise InvalidOption, "No plugin sources available for #{options["type"]}"
    end
    unless block_given?
      raise InvalidOption, "You need to pass a block to #source with :type option"
    end
    source_opts = options.merge("uri" => source)
    with_source(@sources.add_plugin_source(options["type"], source_opts), &blk)
  elsif block_given?
    with_source(@sources.add_rubygems_source("remotes" => source), &blk)
  else
    @global_rubygems_sources << source
  end
end