Rakefile in revenc-0.1.3 vs Rakefile in revenc-0.2.1

@@ -1,29 +1,19 @@
 # encoding: utf-8
 
-# bundler/setup is managing $LOAD_PATH, any gem needed by this Rakefile must 
-# be listed as a development dependency in the gemspec
+# Bundler is managing $LOAD_PATH, any gem needed by this Rakefile must be
+# listed as a development dependency in the gemspec
+require 'bundler/setup'
+require 'bundler/gem_tasks'
 
-require 'rubygems'
-require 'bundler/setup' 
-
-Bundler::GemHelper.install_tasks
-
-def gemspec
-  @gemspec ||= begin
-    file = File.expand_path('../revenc.gemspec', __FILE__)
-    eval(File.read(file), binding, file)
-  end
+require 'rspec/core/rake_task'
+desc "Run RSpec"
+RSpec::Core::RakeTask.new do |spec|
+  spec.pattern = 'spec/**/*_spec.rb'
+  spec.rspec_opts = ['--color', '--format nested']
 end
 
-require 'spec'
-require 'spec/rake/spectask'
-Spec::Rake::SpecTask.new(:spec) do |spec|
-  spec.libs << 'lib' << 'spec'
-  spec.spec_files = FileList['spec/**/*_spec.rb']
-end
-
 require 'cucumber'
 require 'cucumber/rake/task'
 Cucumber::Rake::Task.new(:features) do |task|
   task.cucumber_opts = ["features"]
 end
@@ -31,25 +21,25 @@
 desc "Run specs and features"
 task :test => [:spec, :features]
 
 task :default => :test
 
-namespace :doc do
-  project_root = File.expand_path(File.dirname(__FILE__))
-  doc_destination = File.join(project_root, 'rdoc')
+# put the gemfiles task in the :build dependency chain
+task :build => [:gemfiles]
 
-  require 'yard'
-  require 'yard/rake/yardoc_task'
+desc "Generate .gemfiles via 'git ls-files'"
+task :gemfiles do
+  files = `git ls-files`
 
-  YARD::Rake::YardocTask.new(:generate) do |yt|
-    yt.options = ['--markup-provider', 'rdiscount', 
-                  '--output-dir', doc_destination
-                 ] +
-                 gemspec.rdoc_options - ['--line-numbers', '--inline-source']
-  end
+  filename  = File.join(File.dirname(__FILE__), '.gemfiles')
+  cached_files = File.exists?(filename) ? File.open(filename, "r") {|f| f.read} : nil
 
-  desc "Remove generated documenation"
-  task :clean do
-    rm_r doc_destination if File.exists?(doc_destination)
+  # maintain EOL
+  files.gsub!(/\n/, "\r\n") if cached_files && cached_files.match("\r\n")
+
+  if cached_files != files
+    puts "Updating .gemfiles"
+    File.open(filename, 'wb') {|f| f.write(files)}
   end
 
+  raise "unable to process gemfiles" unless files
 end