Finds missing images in .html files. It assumes that images are stored in the same directory and exports results to a file in /tmp directory.

broken_image_finder.rb

#!/usr/bin/env ruby

script_name         = File.basename($0)
directory           = ARGV[0] || './'
regEx               = /.*\<[Ii][Mm][Gg].*[Ss][Rr][Cc]=["']([^'"]*)/
files               = Dir.glob("#{directory}/**/*.html")
broken_images       = {}
broken_images_count = 0
errors              = []

puts "Searching in #{directory}..."
files.each do |file|
  path                = file.split('/')
  filename            = path.pop
  current_path        = File.join(path)
  content             = File.open(file).read
  broken_images[file] ||= []

  begin
    puts "reading #{file}..."
    content.scan(regEx) do |img_link|
      image_path = File.join(current_path, img_link)
      unless File.exists?(image_path)
        broken_images[file] << image_path
        broken_images_count += 1
      end
    end
    broken_images[file].uniq!
  rescue Exception => e
    message = "File: #{file}\n"
    message += "#{e.message}\n"
    message += e.backtrace.join("\n")
    errors  << message
  end
end

puts "#{broken_images_count} images missing..."

unless broken_images_count == 0
  result_path = "/tmp/#{Time.now.to_i}_#{script_name}_results.txt"
  File.open(result_path, 'w') do |file|
    broken_images.each do |filename, images|
      if images.count > 0
        file.write("#{filename}\n")
        images.each{|image| file.write(" -#{image}\n")}
      end
    end
  end
  puts "Broken image results in #{result_path}..."
end

unless errors.empty?
  error_path = "/tmp/#{Time.now.to_i}_#{script_name}_errors.log"
  File.open(error_path, 'w') do |file|
    errors.each do |error|
      file.write("#{error}\n=====\n")
    end
  end
  puts "Error log in #{error_path}..."
end