Merge pull request #15299 from andriytyurnikov/engine_friendly_rake_s…

…tats

rake stats for engines

railties/lib/rails/generators/rails/plugin/templates/Rakefile

@@ -19,6 +19,10 @@ APP_RAKEFILE = File.expand_path("../<%= dummy_path -%>/Rakefile", __FILE__)
 load 'rails/tasks/engine.rake'
 <% end %>
 
+<% if engine? -%>
+load 'rails/tasks/statistics.rake'
+<% end %>
+
 <% unless options[:skip_gemspec] -%>
 
 Bundler::GemHelper.install_tasks

railties/lib/rails/tasks/statistics.rake

@@ -1,22 +1,23 @@
-STATS_DIRECTORIES = [
-  %w(Controllers        app/controllers),
-  %w(Helpers            app/helpers),
-  %w(Models             app/models),
-  %w(Mailers            app/mailers),
-  %w(Javascripts        app/assets/javascripts),
-  %w(Libraries          lib/),
-  %w(APIs               app/apis),
-  %w(Controller\ tests  test/controllers),
-  %w(Helper\ tests      test/helpers),
-  %w(Model\ tests       test/models),
-  %w(Mailer\ tests      test/mailers),
-  %w(Integration\ tests test/integration),
-  %w(Functional\ tests\ (old)  test/functional),
-  %w(Unit\ tests \ (old)       test/unit)
-].collect { |name, dir| [ name, "#{Rails.root}/#{dir}" ] }.select { |name, dir| File.directory?(dir) }
-
-desc "Report code statistics (KLOCs, etc) from the application"
+desc "Report code statistics (KLOCs, etc) from the application or engine"
 task :stats do
   require 'rails/code_statistics'
+
+  STATS_DIRECTORIES = [
+    %w(Controllers        app/controllers),
+    %w(Helpers            app/helpers),
+    %w(Models             app/models),
+    %w(Mailers            app/mailers),
+    %w(Javascripts        app/assets/javascripts),
+    %w(Libraries          lib/),
+    %w(APIs               app/apis),
+    %w(Controller\ tests  test/controllers),
+    %w(Helper\ tests      test/helpers),
+    %w(Model\ tests       test/models),
+    %w(Mailer\ tests      test/mailers),
+    %w(Integration\ tests test/integration),
+    %w(Functional\ tests\ (old)  test/functional),
+    %w(Unit\ tests \ (old)       test/unit)
+  ].collect { |name, dir| [ name, "#{defined?(ENGINE_PATH)? ENGINE_PATH : Rails.root}/#{dir}" ] }.select { |name, dir| File.directory?(dir) }
+
   CodeStatistics.new(*STATS_DIRECTORIES).to_s
-end
+end