text: """
  Copyright (c) 2018-2022 Intel Corporation
  
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at
  
        http://www.apache.org/licenses/LICENSE-2.0
  
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  """
  
  from pathlib import Path
  
  from ..representation import ReIdentificationAnnotation
  from ..utils import OrderedSet
  
  
  def read_directory(directory, query, image_pattern, descent_order=False):
      pids = OrderedSet()
      images = []
      images_list = list(directory.glob("*.jpg"))
      images_list.sort(reverse=descent_order)
      for image in images_list:
          pid, camid = map(int, image_pattern.search(image.name).groups())
          if pid == -1:
              continue
  
          camid -= 1
          pids.add(pid)
  
          identifier = str(Path(directory.name) / image.name)
          images.append(ReIdentificationAnnotation(identifier, camid, pid, query))
  
      return images, pids
  
  
  def check_dirs(dirs, parent_dir, arg_name='data_dir'):
      for directory in dirs:
          if directory.is_dir():
              continue
  
          message_pattern = "{directory} not found in {parent_dir}. Check {arg_name} is pointed to a correct directory"
          raise FileNotFoundError(message_pattern.format(directory=directory, parent_dir=parent_dir, arg_name=arg_name))
  