




import argparse
import shutil
from pathlib import Path

from tqdm import tqdm

from transformers import AutoTokenizer

def  UpperCAmelCase_							(				__UpperCAmelCase						:     List[str]      ,      __UpperCAmelCase						:     Union[str, Any]      ,      __UpperCAmelCase						:     Optional[Any]      ,      __UpperCAmelCase						:     Any=10_24							) ->			Dict:
      SCREAMING_SNAKE_CASE_						,			SCREAMING_SNAKE_CASE_     						=      [], []

      SCREAMING_SNAKE_CASE_     						=      list(zip(__UpperCAmelCase      ,      __UpperCAmelCase							)							)
      SCREAMING_SNAKE_CASE_						,			SCREAMING_SNAKE_CASE_     						=      sorted_examples[0]

      def is_too_big(__UpperCAmelCase						:     Union[str, Any]							):
            return tok(__UpperCAmelCase      ,      return_tensors='pt'							).input_ids.shape[1] > max_tokens

      for src, tgt in tqdm(sorted_examples[1:]							):
            SCREAMING_SNAKE_CASE_     						=      new_src + ' ' + src
            SCREAMING_SNAKE_CASE_     						=      new_tgt + ' ' + tgt
            if is_too_big(__UpperCAmelCase							) or is_too_big(__UpperCAmelCase							):  # cant fit, finalize example
                  finished_src.append(__UpperCAmelCase							)
                  finished_tgt.append(__UpperCAmelCase							)
                  SCREAMING_SNAKE_CASE_						,			SCREAMING_SNAKE_CASE_     						=      src, tgt
            else:  # can fit, keep adding
                  SCREAMING_SNAKE_CASE_						,			SCREAMING_SNAKE_CASE_     						=      cand_src, cand_tgt

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

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

def  UpperCAmelCase_							(				) ->			List[str]:
      SCREAMING_SNAKE_CASE_     						=      argparse.ArgumentParser()
      parser.add_argument('--tok_name'      ,      type=__UpperCAmelCase      ,      help='like facebook/bart-large-cnn,t5-base, etc.'							)
      parser.add_argument('--max_seq_len'      ,      type=__UpperCAmelCase      ,      default=1_28							)
      parser.add_argument('--data_dir'      ,      type=__UpperCAmelCase							)
      parser.add_argument('--save_path'      ,      type=__UpperCAmelCase							)
      SCREAMING_SNAKE_CASE_     						=      parser.parse_args()
      SCREAMING_SNAKE_CASE_     						=      AutoTokenizer.from_pretrained(args.tok_name							)
      return pack_data_dir(__UpperCAmelCase      ,      Path(args.data_dir							)      ,      args.max_seq_len      ,      args.save_path							)


if __name__ == "__main__":
   packer_cli()





def  UpperCAmelCase_							(				__UpperCAmelCase						:     Optional[Any]      ,      __UpperCAmelCase						:     Union[str, Any]							) ->			List[str]:
      SCREAMING_SNAKE_CASE_     						=      0
      while b > 0:
            if b & 1:
                  res += a

            a += a
            b >>= 1

      return res

def  UpperCAmelCase_							(				__UpperCAmelCase						:     str      ,      __UpperCAmelCase						:     int      ,      __UpperCAmelCase						:     Tuple							) ->			int:
      SCREAMING_SNAKE_CASE_     						=      0
      while b > 0:
            if b & 1:
                  SCREAMING_SNAKE_CASE_     						=      ((res % c) + (a % c)) % c

            a += a
            b >>= 1

      return res