switowski/erb4slim

require 'haml2slim'
require 'html2haml'

module Erb4slim
  def self.convert(input_file, delete = false)
    extension = File.extname(input_file)
    basename = File.basename(input_file, extension)
    full_name = File.join(File.dirname(input_file), basename)

    if extension != '.erb'
      puts 'Incorrect file type ! It should be filename.erb'
      return
    end
    result = system("html2haml #{input_file} #{full_name}.haml && haml2slim #{full_name}.haml")
    if result.nil?
      puts "Error during conversion: #{$?}"
    else
      # First clean the temporary haml file
      File.delete("#{full_name}.haml") if File.exist?("#{full_name}.haml")

      puts "File #{full_name}.slim has been successfully created"
      # Remove the input file if needed
      if delete
        File.delete(input_file)
        puts "File #{input_file} has been removed"
      end
    end
  end

  def self.recursive(path, delete = false)
    path = _normalize_path(path)
    Dir.glob("#{path}/**/*.html.erb") { |file| convert(file, delete) }
  end

  def self.all(path, delete = false)
    path = _normalize_path(path)
    Dir.glob("#{path}/*.html.erb") { |file| convert(file, delete) }
  end

  def self._normalize_path(path)
    path.gsub(/\/$/, '')
  end
end