Better rake:stats for Rails 3.x

stats.rb

# Originally from http://bit.ly/GIhZmg
# modified by @colour to reflect locations of assets in the asset pipeline

namespace :spec do
  desc "Add files that DHH doesn't consider to be 'code' to stats"
  task :statsetup do
  require 'rails/code_statistics'

  class CodeStatistics
    alias calculate_statistics_orig calculate_statistics
    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 << ['Views',  'app/views', /\.(rhtml|erb|rb)$/]
  ::STATS_DIRECTORIES << ['Test Fixtures',  'test/fixtures', /\.yml$/]
  ::STATS_DIRECTORIES << ['Email Fixtures',  'test/fixtures', /\.txt$/]
  # note, I renamed all my rails-generated email fixtures to add .txt
  ::STATS_DIRECTORIES << ['HTML', 'public', /\.html$/]
  ::STATS_DIRECTORIES << ['CSS',  'app/assets/stylesheets', /\.css$/]
  ::STATS_DIRECTORIES << ['JS',  'app/assets/javascripts', /\.js$/]
  # prototype is ~5384 LOC all by itself - very hard to filter out

  ::CodeStatistics::TEST_TYPES << "Test Fixtures"
  ::CodeStatistics::TEST_TYPES << "Email Fixtures"
  end
end
task :stats => "spec:statsetup"