execute

# File lib/rubygems/commands/rdoc_command.rb, line 61
  def execute
    specs = if options[:all] then
              Gem::Specification.to_a
            else
              get_all_gem_names.map do |name|
                Gem::Specification.find_by_name name, options[:version]
              end.flatten.uniq
            end

    if specs.empty? then
      alert_error 'No matching gems found'
      terminate_interaction 1
    end

    specs.each do |spec|
      doc = Gem::RDoc.new spec, options[:include_rdoc], options[:include_ri]

      doc.force = options[:overwrite]

      if options[:overwrite] then
        FileUtils.rm_rf File.join(spec.doc_dir, 'ri')
        FileUtils.rm_rf File.join(spec.doc_dir, 'rdoc')
      end

      begin
        doc.generate
      rescue Errno::ENOENT => e
        e.message =~ / - /
        alert_error "Unable to document #{spec.full_name}, #{$'} is missing, skipping"
        terminate_interaction 1 if specs.length == 1
      end
    end
  end