text: """
  The test launcher of the Ultimate-Hosts-Blacklist project.
  
  This is the module that provides the updater of the requirements.txt file.
  
  Author:
      Nissar Chababy, @funilrys, contactTATAfunilrysTODTODcom
  
  License:
  ::
  
  
      MIT License
  
      Copyright (c) 2019, 2020, 2021 Ultimate-Hosts-Blacklist
      Copyright (c) 2019, 2020, 2021 Nissar Chababy
      Copyright (c) 2019, 2020, 2021 Mitchell Krog
  
      Permission is hereby granted, free of charge, to any person obtaining a copy
      of this software and associated documentation files (the "Software"), to deal
      in the Software without restriction, including without limitation the rights
      to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
      copies of the Software, and to permit persons to whom the Software is
      furnished to do so, subject to the following conditions:
  
      The above copyright notice and this permission notice shall be included in all
      copies or substantial portions of the Software.
  
      THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
      OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
      SOFTWARE.
  """
  
  import logging
  import os
  
  from PyFunceble.helpers.file import FileHelper
  
  from ultimate_hosts_blacklist.test_launcher.defaults import infrastructure, outputs
  from ultimate_hosts_blacklist.test_launcher.updater.base import UpdaterBase
  
  
  class RequirementsUpdater(UpdaterBase):
      """
      This is the interface that updates our requirements file.
      """
  
      @property
      def authorized(self) -> bool:
          """
          Provides the authorization to launch.
          """
  
          return not FileHelper(
              os.path.join(
                  outputs.CURRENT_DIRECTORY, outputs.EXAMPLE_ADMINISTRATION_FILENAME
              )
          ).exists()
  
      @UpdaterBase.execute_if_authorized
      def start(self) -> "UpdaterBase":
          """
          Starts the update process.
          """
  
          file_helper = FileHelper(
              os.path.join(outputs.CURRENT_DIRECTORY, outputs.REQUIREMENTS_FILENAME)
          ).write(
              "\n".join(infrastructure.REQUIREMENTS_FILE_CONTENT) + "\n", overwrite=True
          )
  
          logging.info("Updated: %r", file_helper.path)
  