Haml to erb converter with herbalizer

haml2erb.rb

#!/usr/bin/env ruby

require "httparty"

class Converter
  def initialize(filename)
    @content = File.open(filename).read
  end
  attr_reader :content

  def erb
    raise request['error'] unless request['success']
    request['erb']
  end

  private

  def request
    @request ||= HTTParty.post('https://haml2erb.org/api/convert', multipart: true, body: body)
  end

  def body
    { converter: "herbalizer", haml: content }
  end
end

if __FILE__ == $0
  if ARGV.length < 1
    puts "Views path must be given"
    exit(1)
  end
  # puts %x[find #{ARGV[0]} -mindepth 1 -type f -name '*.haml' -exec printf x \; | wc -c]
  files = %x[find #{ARGV[0]} -mindepth 1 -type f -name "*.haml"].split("\n")
  files.each do |file|
    lines_count = %x[cat #{file} | wc -l].tr("\s", "").tr("\n", "").to_i + 1
    next if lines_count > 5 # Max line threshold of 5 lines
    puts "#{lines_count}\t=> #{file}"
    begin
      erb = Converter.new(file).erb
    rescue => e
      puts "Error while converting: #{$!}"
      next
    end
    File.open(file.sub(".haml", ".erb"), 'w') do |f|
      f.write(erb)
    end
    %x[rm #{file}]
  end
end