Rake task to zip dSYM in RubyMotion project

Rakefile

namespace 'dsym' do
  desc 'Archive dSYM'
  task :zip do
    App.config_without_setup.build_mode = :release
    App.config_without_setup.distribution_mode = true

    app_bundle = App.config.app_bundle('iPhoneOS')
    app_dsym = app_bundle.sub(/\.app$/, '.dSYM')
    app_dsym_zip = "#{app_dsym}-#{App.config.version}.zip"
    if !File.exist?(app_dsym_zip) or File.mtime(app_dsym) > File.mtime(app_dsym_zip)
      Dir.chdir(File.dirname(app_dsym)) do
        puts "creating #{app_dsym_zip} "
        sh "/usr/bin/zip -q -r \"#{File.basename(app_dsym_zip)}\" \"#{File.basename(app_dsym)}\""
      end
    else
      puts "#{app_dsym_zip} is already the latest one."
    end
  end
end