# stats
begin
  gem 'rails'
  require 'code_statistics'
  namespace :spec do
    desc "Use Rails's rake:stats task for a gem"
    task :statsetup do
      class CodeStatistics
        def calculate_statistics
          @pairs.inject({}) do |stats, pair|
            if 3 == pair.size
              stats[pair.first] = calculate_directory_statistics(pair[1], pair[2]); stats
            else
              stats[pair.first] = calculate_directory_statistics(pair.last); stats
            end
          end
        end
      end
      ::STATS_DIRECTORIES = [['Libraries',   'lib',  /.(sql|rhtml|erb|rb|yml)$/],
                   ['Tests',     'test', /.(sql|rhtml|erb|rb|yml)$/]]
      ::CodeStatistics::TEST_TYPES << "Tests"
    end
  end
  desc "Report code statistics (KLOCs, etc) from the application"
  task :stats => “spec:statsetup” do
    CodeStatistics.new(*STATS_DIRECTORIES).to_s
  end
rescue Gem::LoadError => le
  task :stats do
    raise RuntimeError, “‘rails’ gem not found - you must install it in order to use this task.n”
  end
end