!readme

Rake task for finding unused images in rails app.

It requires 'ack' http://betterthangrep.com/
MacOS: brew install ack 
Linux: apt-get install ack-grep

Before lunch a task put .ackrc to home directory like ~/.ackrc

.ackrc

--type-add=css=.sass,.less,.scss
--type-add=ruby=.rake,.rsel,.builder,.thor
--type-add=html=..html,.html.erb,.haml,.html.haml,.slim,.html.slim
--type-add=js=.js.erb,.coffee
--type-set=cucumber=.feature
--ignore-dir=vendor
--ignore-dir=log
--ignore-dir=tmp
--ignore-dir=doc
--ignore-dir=coverage
--ignore-dir=public/assets
--ignore-dir=spec/cassettes
--ignore-dir=features/cassettes
--smart-case
--sort-files
--color
--follow
--group

find_unused_images.rake

# It requires ACK - http://betterthangrep.com/
task :find_unused_images do
  images = Dir.glob('app/assets/images/**/*')

  images_to_delete = []
  images.each do |image|
    unless File.directory?(image)
      # print "\nChecking #{image}..."
      print "."
      result = `ack -1 --ruby --html --css --js #{File.basename(image)}`
      if result.empty?
        images_to_delete << image
      else
      end
    end
  end
  puts "\n\nDelete #{images_to_delete.count} unused files running the command below:"
  puts "rm #{images_to_delete.join(" ")}"
end