docs: def _parse_building_options(string):
      """
      This will parse and sort the building options defined in the '{}'
      constructor. Will only allow one of each argument
      """
      contents = _get_contents_between(string, '{', '}')
      unsorted_options = contents.split(',')
      _check_parameters(unsorted_options, ('@', '/', '\\', '^'))
  
      output_directory = None
      output_format = None
      building_directory = None
      for option in unsorted_options:
          if option[0] == '@':
              if output_format:
                  raise ValueError(MULTIPLE_CONFLICTING_BUILD_OPTIONS)
              output_format = option[1:]
          elif option[0] in ('/', '\\'):
              if output_directory:
                  raise ValueError(MULTIPLE_CONFLICTING_BUILD_OPTIONS)
              output_directory = option[1:]
          elif option[0] == '^':
              if building_directory:
                  raise ValueError(MULTIPLE_CONFLICTING_BUILD_OPTIONS)
              building_directory = option[1:]
  
      string = string[:string.index('{')]
      return output_directory, output_format, building_directory, string