


'''simple docstring'''


import argparse
import shutil
from pathlib import Path

from tqdm import tqdm

from transformers import AutoTokenizer




def      lowerCamelCase					(      lowerCamelCase  :      Optional[Any]							,						lowerCamelCase  :      int							,						lowerCamelCase  :      List[Any]							,						lowerCamelCase  :      Union[str, Any]=1024):
      A_   ,					A_						:  List[str]          =				[], []

      A_						:  Any          =				list(zip(lowerCamelCase							,						lowerCamelCase))
      A_   ,					A_						:  Optional[Any]          =				sorted_examples[0]

      def is_too_big(lowerCamelCase  :      Tuple):
            return tok(lowerCamelCase							,						return_tensors="""pt""").input_ids.shape[1] > max_tokens

      for src, tgt in tqdm(sorted_examples[1:]):
            A_						:  int          =				new_src + """ """ + src
            A_						:  List[Any]          =				new_tgt + """ """ + tgt
            if is_too_big(lowerCamelCase) or is_too_big(lowerCamelCase):  # cant fit, finalize example
                  finished_src.append(lowerCamelCase)
                  finished_tgt.append(lowerCamelCase)
                  A_   ,					A_						:  List[str]          =				src, tgt
            else:  # can fit, keep adding
                  A_   ,					A_						:  Optional[int]          =				cand_src, cand_tgt

                   # cleanup
      if new_src:
            assert new_tgt
            finished_src.append(lowerCamelCase)
            finished_tgt.append(lowerCamelCase)
      return finished_src, finished_tgt




def      lowerCamelCase					(      lowerCamelCase  :      List[str]							,						lowerCamelCase  :      Path							,						lowerCamelCase  :      Union[str, Any]							,						lowerCamelCase  :      Optional[int]):
      A_						:  List[str]          =				Path(lowerCamelCase)
      save_path.mkdir(exist_ok=lowerCamelCase)
      for split in ["train"]:
            A_   ,					A_						:  Optional[int]          =				data_dir / F'{split}.source', data_dir / F'{split}.target'
            A_						:  int          =				[x.rstrip() for x in Path(lowerCamelCase).open().readlines()]
            A_						:  int          =				[x.rstrip() for x in Path(lowerCamelCase).open().readlines()]
            A_   ,					A_						:  Dict          =				pack_examples(lowerCamelCase							,						lowerCamelCase							,						lowerCamelCase							,						lowerCamelCase)
            print(F'packed {split} split from {len(lowerCamelCase)} examples -> {len(lowerCamelCase)}.')
            Path(save_path / F'{split}.source').open("""w""").write("""\n""".join(lowerCamelCase))
            Path(save_path / F'{split}.target').open("""w""").write("""\n""".join(lowerCamelCase))
      for split in ["val", "test"]:
            A_   ,					A_						:  str          =				data_dir / F'{split}.source', data_dir / F'{split}.target'
            shutil.copyfile(lowerCamelCase							,						save_path / F'{split}.source')
            shutil.copyfile(lowerCamelCase							,						save_path / F'{split}.target')




def      lowerCamelCase					(      ):
      A_						:  Optional[Any]          =				argparse.ArgumentParser()
      parser.add_argument("""--tok_name"""							,						type=lowerCamelCase							,						help="""like facebook/bart-large-cnn,t5-base, etc.""")
      parser.add_argument("""--max_seq_len"""							,						type=lowerCamelCase							,						default=128)
      parser.add_argument("""--data_dir"""							,						type=lowerCamelCase)
      parser.add_argument("""--save_path"""							,						type=lowerCamelCase)
      A_						:  Optional[int]          =				parser.parse_args()
      A_						:  Optional[int]          =				AutoTokenizer.from_pretrained(args.tok_name)
      return pack_data_dir(lowerCamelCase							,						Path(args.data_dir)							,						args.max_seq_len							,						args.save_path)


if __name__ == "__main__":
     packer_cli()




'''simple docstring'''


import baseaa




def      lowerCamelCase					(      lowerCamelCase  :      str):
      return baseaa.aaaencode(string.encode("""utf-8"""))




def      lowerCamelCase					(      lowerCamelCase  :      bytes):
      return baseaa.aaadecode(lowerCamelCase).decode("""utf-8""")


if __name__ == "__main__":
     import doctest

     doctest.testmod()
