css_checking.rb

#!/usr/bin/env ruby -wKU

files = Dir["app/stylesheets/**/*"]

files.each do |file_name|
  next unless File.file?(file_name)

  puts "- reading file #{file_name}"
  content = open(file_name).read
  tokens  = content.scan(/(url\(.+\))/i)

  tokens.flatten.each do |token|
    path = token.match(/\(['"]?([\w \.\/_-]+)['"]?\)/)
    next unless path

    unless File.file?("public/#{path[1]}")
      puts "#{path[1]} does not exist"
    end
  end
end