to_haml.rb

class ToHaml
  def initialize(path)
    @path = path
  end

  def convert!
    Dir["#{@path}/**/*.erb"].each do |file|
      puts "converting #{file}"
      # run html2haml on the input file in erb mode with strict parsing
      # on the input (xhtml mode)
      `html2haml -ex #{file} #{file.gsub(/\.erb$/, '.haml')}`
    end
  end
end

path = File.join(File.dirname(__FILE__), 'app', 'views')
ToHaml.new(path).convert!