find_unused.rb

# Requires `brew install ag`

dirname = ARGV[0]

records = Dir.glob(File.join(dirname, "**/*"))
possible_extensions = %w(jpeg jpg svg gif png css scss js coffee htc ejs jst).map{|ext| ".#{ext}"}
names = records.
    reject{|path| File.directory?(path) }.
    reject{|path| path =~ /@2x/}.
    map do |path|
  name = File.basename path
  while true
    ext = File.extname(name)
    if possible_extensions.include? ext
      name = File.basename name, ext
    else
      break
    end
  end
  [name, path]
end

names.each do |data|
  name, path = data
  `ag '#{name}' --ignore '*.svg' > /dev/null`
  if $? != 0
    puts path
  end
end