class Foreman::Export::Inittab

def export(fname=nil, options={})
  app = options[:app] || File.basename(engine.directory)
  user = options[:user] || app
  log_root = options[:log] || "/var/log/#{app}"
  concurrency = Foreman::Utils.parse_concurrency(options[:concurrency])
  inittab = []
  inittab << "# ----- foreman #{app} processes -----"
  engine.procfile.entries.inject(1) do |index, process|
    1.upto(concurrency[process.name]) do |num|
      id = app.slice(0, 2).upcase + sprintf("%02d", index)
      port = engine.port_for(process, num, options[:port])
      inittab << "#{id}:4:respawn:/bin/su - #{user} -c 'PORT=#{port} #{process.command} >> #{log_root}/#{process.name}-#{num}.log 2>&1'"
      index += 1
    end
    index
  end
  inittab << "# ----- end foreman #{app} processes -----"
  inittab = inittab.join("\n") + "\n"
  if fname
    FileUtils.mkdir_p(log_root) rescue error "could not create #{log_root}"
    FileUtils.chown(user, nil, log_root) rescue error "could not chown #{log_root} to #{user}"
    write_file(fname, inittab)
  else
    puts inittab
  end
end