Remove extra whitespace and comments from html templates and create a single JS and RB file

trim.rb

#! /usr/bin/env ruby

Js = 'public/static/js/_tpl.js'
Rb = 'config/initializers/templates.rb'

files = Dir.glob('templates/**/*.html')

templates = {}
total_size = 0
count = 0
files.each do |file|
  template = (File.read file).gsub(/>\s+</,'><').gsub("'","\\'").gsub("\n",'').gsub(/<!--(.|\s)*?-->/, '')
  name = file.gsub('.html','').gsub('templates/','')
  templates[name] = template
  # puts "#{name} : #{File.size(file) - template.length}"
  total_size += File.size file
  count += 1
end

File.delete(Js) if File.exists? Js
File.delete(Rb) if File.exists? Rb
File.open Js, 'w' do |js|
  js.write "window._tpl={"
  i = 0
  templates.each do |name,tpl|
    i != 0 ? js.write(',') : i=1
    js.write "'#{name}':'#{tpl}'"
  end
  js.write "};"
end

puts "Minified (#{count}) html files with total size of (#{total_size}) to (1) js file with size of (#{File.size(Js)})"

File.open Rb, 'w' do |rb|
  rb.write "Templates = {"
  i = 0
  templates.each do |name,tpl|
    i != 0 ? rb.write(',') : i=1
    rb.write "\n  "
    rb.write "'#{name}' => '#{tpl}'"
  end
  rb.write "\n}"
end