class RDoc::RubyGemsHook

def generate
  return if @spec.default_gem?
  return unless @generate_ri or @generate_rdoc
  setup
  options = nil
  args = @spec.rdoc_options
  args.concat @spec.source_paths
  args.concat @spec.extra_rdoc_files
  case config_args = Gem.configuration[:rdoc]
  when String then
    args = args.concat config_args.split(' ')
  when Array then
    args = args.concat config_args
  end
  delete_legacy_args args
  Dir.chdir @spec.full_gem_path do
    options = ::RDoc::Options.new
    options.default_title = "#{@spec.full_name} Documentation"
    options.parse args
    options.quiet = !Gem.configuration.really_verbose
  end
  @rdoc = new_rdoc
  say "Parsing documentation for #{@spec.full_name}"
  Dir.chdir @spec.full_gem_path do
    # RDoc::Options#finish must be called before parse_files.
    # RDoc::Options#finish is also called after ri/darkfish generator setup.
    # We need to dup the options to avoid modifying it after finish is called.
    parse_options = options.dup
    parse_options.finish
    @rdoc.options = parse_options
    @rdoc.store = RDoc::Store.new(parse_options)
    @rdoc.parse_files parse_options.files
  end
  document 'ri',       options, @ri_dir if
    @generate_ri   and (@force or not File.exist? @ri_dir)
  document 'darkfish', options, @rdoc_dir if
    @generate_rdoc and (@force or not File.exist? @rdoc_dir)
end