Read through stylesheets and determine images that are missing from the file system that are referenced in the stylesheet, print a report of those images for each file

stylesheet_check.rb

stylesheets_path = File.join(Rails.root, 'public', 'stylesheets')
Dir.glob("#{stylesheets_path}/*/**/*.css").each do |css_file|
  data = File.read(css_file)
  matches = data.scan(/url\([\s"']*([^\)"'\s]*)[\s"']*\)/m).collect do |match|
    match.first
  end
  uniq_matches = matches.uniq
  report_matches = {}
  unless uniq_matches.blank?
    matches.uniq.each do |match|
      next if match.match(/data:image/)
      file_match = match.split('?')[0]
      if match.match(/^(http|https)\:\/\//)
        report_matches[match] ||= []
        File.readlines(css_file).each_with_index do |line, index|
          report_matches[match] << (index + 1) if line.match(file_match)
        end
      else
        pre_hash = file_match.split('#')[0]
        match_path = File.join(Rails.root, 'public', pre_hash.gsub('../', ''))
        unless File.exists?(match_path)
          report_matches[match] ||= []
          File.readlines(css_file).each_with_index do |line, index|
            report_matches[match] << (index + 1) if line.match(match)
          end
        end
      end
    end
  end
  unless report_matches.blank?
    puts css_file
    report_matches.each do |match, lines|
      puts "  #{match}"
      lines.each do |line_num|
        puts "    Line: #{line_num}"
      end
    end
    puts " ------------ "
  end
end