class Gem::Commands::StaleCommand

def description # :nodoc:
  <<-EOF
e stale command lists the latest access time for all the files in your
stalled gems.
u can use this command to discover gems and gem versions you are no
nger using.
  EOF
end

def execute
  gem_to_atime = {}
  Gem::Specification.each do |spec|
    name = spec.full_name
    Dir["#{spec.full_gem_path}/**/*.*"].each do |file|
      next if File.directory?(file)
      stat = File.stat(file)
      gem_to_atime[name] ||= stat.atime
      gem_to_atime[name] = stat.atime if gem_to_atime[name] < stat.atime
    end
  end
  gem_to_atime.sort_by { |_, atime| atime }.each do |name, atime|
    say "#{name} at #{atime.strftime '%c'}"
  end
end

def initialize
  super('stale', 'List gems along with access times')
end

def usage # :nodoc:
  "#{program_name}"
end