Script for converting ERB to HAML

erb2haml.rb

#! /usr/bin/env ruby
require 'hpricot'
require 'ruby_parser'
require 'optparse'

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

  def convert!
    Dir["#{@path}/**/*.erb"].each do |file|
      `html2haml -rx #{file} #{file.gsub(/\.erb$/, '.haml')}`
      `rm -Rf #{file}`
    end
  end
end

option_parser = OptionParser.new do |opts|
  executable_name = File.basename($PROGRAM_NAME)
  opts.banner = "Usage: #{executable_name} template_directory"

  executable_name = File.basename($PROGRAM_NAME)
  opts.banner = "Convert ERB templates to HAML

Usage: #{executable_name} template_directory

"
end

begin
  option_parser.parse!
  if ARGV.empty?
    puts "error: you must supply a template_directory"
    puts
    puts option_parser.help
    exit 1
  else
	input_path = ARGV[0].split File::SEPARATOR 
	path = File.expand_path(File.join(input_path))
	ToHaml.new(path).convert! 
  end 
rescue OptionParser::InvalidArgument => ex
  STDERR.puts ex.message
  STDERR.puts option_parser
end