store_for

# File lib/rdoc/servlet.rb, line 410
  def store_for source_name
    case source_name
    when 'home' then
      RDoc::Store.new RDoc::RI::Paths.home_dir, :home
    when 'ruby' then
      RDoc::Store.new RDoc::RI::Paths.system_dir, :system
    when 'site' then
      RDoc::Store.new RDoc::RI::Paths.site_dir, :site
    when /^extra-(\d+)$/ then
      index = $1.to_i - 1
      ri_dir = installed_docs[index][4]
      RDoc::Store.new ri_dir, :extra
    else
      ri_dir, type = ri_paths.find do |dir, dir_type|
        next unless dir_type == :gem

        source_name == dir[%/([^/]*)/ri$%, 1]
      end

      raise WEBrick::HTTPStatus::NotFound,
            "Could not find gem \"#{source_name}\". Are you sure you installed it?" unless ri_dir

      store = RDoc::Store.new ri_dir, type

      return store if File.exist? store.cache_path

      raise WEBrick::HTTPStatus::NotFound,
            "Could not find documentation for \"#{source_name}\". Please run `gem rdoc --ri gem_name`"

    end
  end