CoffeeScript Processor

Author: bcardarella

Rakefile

@@ -1,4 +1,5 @@
 require 'bundler'
+require File.join(File.expand_path('..', __FILE__), 'coffeescript/processor')
 Bundler::GemHelper.install_tasks
 
 multitask :default => 'test:ruby'
@@ -35,6 +36,46 @@ namespace :test do
   end
 end
 
+desc %{Regenerate and commit JavaScript file}
+task :regenerate_javascript do
+  regenerate_javascript
+end
+
+Rake::Task[:build].instance_eval { @actions.clear }
+task :build do
+  regenerate_javascript
+  perform_git_commit
+  Bundler::GemHelper.new(Dir.pwd).build_gem
+end
+
+def perform_git_commit
+  sh_with_code('git add vendor')
+  out, code = sh_with_code('git commit -m "Regenerated JavaScript"')
+  if code == 0
+    puts "Committed changes"
+  else
+    puts "Nothing to commit"
+  end
+end
+
+def regenerate_javascript
+  ClientSideValidations::Processor.run
+  puts 'Regenerated JavaScript'
+end
+
+def sh_with_code(cmd, &block)
+  cmd << " 2>&1"
+  outbuf = ''
+  Bundler.ui.debug(cmd)
+  Dir.chdir(Dir.pwd) {
+    outbuf = `#{cmd}`
+    if $? == 0
+      block.call(outbuf) if block
+    end
+  }
+  [outbuf, $?]
+end
+
 PORT = 4567
 
 # Returns an array e.g.: ['open', 'http://example.com']

coffeescript/processor.rb

@@ -0,0 +1,35 @@
+$:.unshift(File.expand_path('../../lib', __FILE__))
+
+require 'client_side_validations/version'
+require 'coffee_script'
+require 'erb'
+
+module ClientSideValidations
+  class Processor
+    def self.run
+      write_file
+    end
+
+    def self.root_path
+      File.expand_path('../..', __FILE__)
+    end
+
+    def self.file_name
+      'rails.validations'
+    end
+
+    def self.template
+      ERB.new(File.open(File.join(root_path, 'coffeescript', "#{file_name}.coffee")).read)
+    end
+
+    def self.compiled_coffeescript
+      CoffeeScript.compile(template.result(binding))
+    end
+
+    def self.write_file
+      file = File.new(File.join(root_path, "vendor/assets/javascripts/#{file_name}.js"), 'w')
+      file << compiled_coffeescript
+      file.close
+    end
+  end
+end