mascot_dat_files_controller.rb

  def download
    load_mascot_dat_file
    unless File.exist?(@mascot_dat_file.source || '')
      flash[:error] = "Couldn't find file #{@mascot_dat_file.source}"
      redirect_to mascot_dat_files_path and return
    end
    send_file @mascot_dat_file.source
  end


  protected

  def parse_mascot_dat_file(path,path_to_yml = nil)
    path_to_yml ||= path + '.yml'
    raise  "Something wrong with running mascot2yml.jar" unless ShellWrapper.parse_mascot_dat_files(path, path_to_yml)
    path_to_yml
  end