Converting a Javascript Project to CoffeeScript

js2cs.rb

#SRC_BASE_DIR = "public/javascripts/backbone"
#DEST_BASE_DIR = "app/coffeescripts/backbone"
SRC_BASE_DIR = "spec/javascripts"
DEST_BASE_DIR = "spec/coffeescripts"
JS2COFFEE = "~/node_modules/js2coffee/bin/js2coffee"

dirs = []
files = []

Dir.glob("#{SRC_BASE_DIR}/**/*.js").each do |file|
  files << file
  dir =  File.dirname(file).split(SRC_BASE_DIR)[1]
  dirs << dir unless dirs.include?(dir) 
end

puts dirs

dirs.each do |dir|
  IO.popen("mkdir -p #{DEST_BASE_DIR}#{dir}")
end

files.each do |file|
  # convert
  relative_path =  File.dirname(file).split(SRC_BASE_DIR)[1]
  basename = File.basename(file, ".js")
  output_file = "#{DEST_BASE_DIR}#{relative_path}/#{basename}.coffee"
  puts "#{JS2COFFEE} #{file} > #{output_file}"
  `#{JS2COFFEE} #{file} > #{output_file}`
  puts "Removing #{file}"
  `rm #{file}`
end