
import os
import re
from shutil import copyfile
from typing import List, Optional, Tuple

from ...tokenization_utils import PreTrainedTokenizer
from ...utils import logging


_snake_case      = logging.get_logger(__name__)

_snake_case      = {
    '''vocab_file''': '''vocab.txt''',
    '''merges_file''': '''bpe.codes''',
}

_snake_case      = {
    '''vocab_file''': {
        '''vinai/phobert-base''': '''https://huggingface.co/vinai/phobert-base/resolve/main/vocab.txt''',
        '''vinai/phobert-large''': '''https://huggingface.co/vinai/phobert-large/resolve/main/vocab.txt''',
    },
    '''merges_file''': {
        '''vinai/phobert-base''': '''https://huggingface.co/vinai/phobert-base/resolve/main/bpe.codes''',
        '''vinai/phobert-large''': '''https://huggingface.co/vinai/phobert-large/resolve/main/bpe.codes''',
    },
}

_snake_case      = {
    '''vinai/phobert-base''': 256,
    '''vinai/phobert-large''': 256,
}

def  __lowerCamelCase					( _lowercase			)       ->      Optional[int]:
     UpperCamelCase						    =					set()
     UpperCamelCase						    =					word[0]
     for char in word[1:]:
          pairs.add((prev_char, char)			)
          UpperCamelCase						    =					char

     UpperCamelCase						    =					set(_lowercase			)
     return pairs







class       _lowerCAmelCase  (		__magic_name__							):

 """simple docstring"""
 SCREAMING_SNAKE_CASE_				:					Dict       						=VOCAB_FILES_NAMES
 SCREAMING_SNAKE_CASE_				:					Dict       						=PRETRAINED_VOCAB_FILES_MAP
 SCREAMING_SNAKE_CASE_				:					Union[str, Any]       						=PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES

 def __init__(						self			:			Optional[int]					, SCREAMING_SNAKE_CASE__			:			List[Any]					, SCREAMING_SNAKE_CASE__			:			Optional[Any]					, SCREAMING_SNAKE_CASE__			:			Any="<s>"					, SCREAMING_SNAKE_CASE__			:			Optional[int]="</s>"					, SCREAMING_SNAKE_CASE__			:			Optional[int]="</s>"					, SCREAMING_SNAKE_CASE__			:			Any="<s>"					, SCREAMING_SNAKE_CASE__			:			str="<unk>"					, SCREAMING_SNAKE_CASE__			:			Optional[Any]="<pad>"					, SCREAMING_SNAKE_CASE__			:			List[str]="<mask>"					, **SCREAMING_SNAKE_CASE__			:			int					, ):






      """simple docstring"""



      super().__init__(
          bos_token=SCREAMING_SNAKE_CASE__					, eos_token=SCREAMING_SNAKE_CASE__					, unk_token=SCREAMING_SNAKE_CASE__					, sep_token=SCREAMING_SNAKE_CASE__					, cls_token=SCREAMING_SNAKE_CASE__					, pad_token=SCREAMING_SNAKE_CASE__					, mask_token=SCREAMING_SNAKE_CASE__					, **SCREAMING_SNAKE_CASE__					, )

      UpperCamelCase						    =					vocab_file
      UpperCamelCase						    =					merges_file

      UpperCamelCase						    =					{}
      UpperCamelCase						    =					0
      UpperCamelCase						    =					1
      UpperCamelCase						    =					2
      UpperCamelCase						    =					3

      self.add_from_file(SCREAMING_SNAKE_CASE__   )

      UpperCamelCase						    =					{v: k for k, v in self.encoder.items()}

      with open(SCREAMING_SNAKE_CASE__					, encoding='utf-8'   ) as merges_handle:
           UpperCamelCase						    =					merges_handle.read().split('\n'   )[:-1]
      UpperCamelCase						    =					[tuple(merge.split()[:-1]   ) for merge in merges]
      UpperCamelCase						    =					dict(zip(SCREAMING_SNAKE_CASE__					, range(len(SCREAMING_SNAKE_CASE__   )   )   )   )
      UpperCamelCase						    =					{}

 def      __lowerCAmelCase  (						self			:			Tuple					, SCREAMING_SNAKE_CASE__			:			List[int]					, SCREAMING_SNAKE_CASE__			:			Optional[List[int]] = None   ):






      """simple docstring"""



      if token_ids_a is None:
           return [self.cls_token_id] + token_ids_a + [self.sep_token_id]
      UpperCamelCase						    =					[self.cls_token_id]
      UpperCamelCase						    =					[self.sep_token_id]
      return cls + token_ids_a + sep + sep + token_ids_a + sep

 def      __lowerCAmelCase  (						self			:			Dict					, SCREAMING_SNAKE_CASE__			:			List[int]					, SCREAMING_SNAKE_CASE__			:			Optional[List[int]] = None					, SCREAMING_SNAKE_CASE__			:			bool = False   ):






      """simple docstring"""



      if already_has_special_tokens:
           return super().get_special_tokens_mask(
               token_ids_a=SCREAMING_SNAKE_CASE__					, token_ids_a=SCREAMING_SNAKE_CASE__					, already_has_special_tokens=SCREAMING_SNAKE_CASE__   )

      if token_ids_a is None:
           return [1] + ([0] * len(SCREAMING_SNAKE_CASE__   )) + [1]
      return [1] + ([0] * len(SCREAMING_SNAKE_CASE__   )) + [1, 1] + ([0] * len(SCREAMING_SNAKE_CASE__   )) + [1]

 def      __lowerCAmelCase  (						self			:			List[Any]					, SCREAMING_SNAKE_CASE__			:			List[int]					, SCREAMING_SNAKE_CASE__			:			Optional[List[int]] = None   ):






      """simple docstring"""



      UpperCamelCase						    =					[self.sep_token_id]
      UpperCamelCase						    =					[self.cls_token_id]

      if token_ids_a is None:
           return len(cls + token_ids_a + sep   ) * [0]
      return len(cls + token_ids_a + sep + sep + token_ids_a + sep   ) * [0]

 @property
 def      __lowerCAmelCase  (						self			:			Optional[Any]   ):






      """simple docstring"""



      return len(self.encoder   )

 def      __lowerCAmelCase  (						self			:			str   ):






      """simple docstring"""



      return dict(self.encoder					, **self.added_tokens_encoder   )

 def      __lowerCAmelCase  (						self			:			List[Any]					, SCREAMING_SNAKE_CASE__			:			Dict   ):






      """simple docstring"""



      if token in self.cache:
           return self.cache[token]
      UpperCamelCase						    =					tuple(SCREAMING_SNAKE_CASE__   )
      UpperCamelCase						    =					tuple(list(word[:-1]   ) + [word[-1] + '</w>']   )
      UpperCamelCase						    =					get_pairs(SCREAMING_SNAKE_CASE__   )

      if not pairs:
           return token

      while True:
           UpperCamelCase						    =					min(SCREAMING_SNAKE_CASE__					, key=lambda SCREAMING_SNAKE_CASE__   : self.bpe_ranks.get(SCREAMING_SNAKE_CASE__					, float('inf'   )   )   )
           if bigram not in self.bpe_ranks:
                break
           UpperCamelCase    ,		UpperCamelCase						    =					bigram
           UpperCamelCase						    =					[]
           UpperCamelCase						    =					0
           while i < len(SCREAMING_SNAKE_CASE__   ):
                try:
                     UpperCamelCase						    =					word.index(SCREAMING_SNAKE_CASE__					, SCREAMING_SNAKE_CASE__   )
                except ValueError:
                     new_word.extend(word[i:]   )
                     break
                else:
                     new_word.extend(word[i:j]   )
                     UpperCamelCase						    =					j

                if word[i] == first and i < len(SCREAMING_SNAKE_CASE__   ) - 1 and word[i + 1] == second:
                     new_word.append(first + second   )
                     i += 2
                else:
                     new_word.append(word[i]   )
                     i += 1
           UpperCamelCase						    =					tuple(SCREAMING_SNAKE_CASE__   )
           UpperCamelCase						    =					new_word
           if len(SCREAMING_SNAKE_CASE__   ) == 1:
                break
           else:
                UpperCamelCase						    =					get_pairs(SCREAMING_SNAKE_CASE__   )
      UpperCamelCase						    =					'@@ '.join(SCREAMING_SNAKE_CASE__   )
      UpperCamelCase						    =					word[:-4]
      UpperCamelCase						    =					word
      return word

 def      __lowerCAmelCase  (						self			:			Optional[int]					, SCREAMING_SNAKE_CASE__			:			Any   ):






      """simple docstring"""



      UpperCamelCase						    =					[]

      UpperCamelCase						    =					re.findall(r'\S+\n?'					, SCREAMING_SNAKE_CASE__   )

      for token in words:
           split_tokens.extend(list(self.bpe(SCREAMING_SNAKE_CASE__   ).split(' '   )   )   )
      return split_tokens

 def      __lowerCAmelCase  (						self			:			int					, SCREAMING_SNAKE_CASE__			:			Dict   ):






      """simple docstring"""



      return self.encoder.get(SCREAMING_SNAKE_CASE__					, self.encoder.get(self.unk_token   )   )

 def      __lowerCAmelCase  (						self			:			Tuple					, SCREAMING_SNAKE_CASE__			:			Dict   ):






      """simple docstring"""



      return self.decoder.get(SCREAMING_SNAKE_CASE__					, self.unk_token   )

 def      __lowerCAmelCase  (						self			:			Dict					, SCREAMING_SNAKE_CASE__			:			Tuple   ):






      """simple docstring"""



      UpperCamelCase						    =					' '.join(SCREAMING_SNAKE_CASE__   ).replace('@@ '					, ''   ).strip()
      return out_string

 def      __lowerCAmelCase  (						self			:			Any					, SCREAMING_SNAKE_CASE__			:			str					, SCREAMING_SNAKE_CASE__			:			Optional[str] = None   ):






      """simple docstring"""



      if not os.path.isdir(SCREAMING_SNAKE_CASE__   ):
           logger.error(F'Vocabulary path ({save_directory}) should be a directory'   )
           return
      UpperCamelCase						    =					os.path.join(
          SCREAMING_SNAKE_CASE__					, (filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['vocab_file']   )
      UpperCamelCase						    =					os.path.join(
          SCREAMING_SNAKE_CASE__					, (filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['merges_file']   )

      if os.path.abspath(self.vocab_file   ) != os.path.abspath(SCREAMING_SNAKE_CASE__   ):
           copyfile(self.vocab_file					, SCREAMING_SNAKE_CASE__   )

      if os.path.abspath(self.merges_file   ) != os.path.abspath(SCREAMING_SNAKE_CASE__   ):
           copyfile(self.merges_file					, SCREAMING_SNAKE_CASE__   )

      return out_vocab_file, out_merge_file






 def      __lowerCAmelCase  (						self			:			List[str]					, SCREAMING_SNAKE_CASE__			:			Any   ):






      """simple docstring"""



      if isinstance(SCREAMING_SNAKE_CASE__					, SCREAMING_SNAKE_CASE__   ):
           try:
                with open(SCREAMING_SNAKE_CASE__					, 'r'					, encoding='utf-8'   ) as fd:
                     self.add_from_file(SCREAMING_SNAKE_CASE__   )
           except FileNotFoundError as fnfe:
                raise fnfe
           except UnicodeError:
                raise Exception(F'Incorrect encoding detected in {f}, please rebuild the dataset'   )
           return

      UpperCamelCase						    =					f.readlines()
      for lineTmp in lines:
           UpperCamelCase						    =					lineTmp.strip()
           UpperCamelCase						    =					line.rfind(' '   )
           if idx == -1:
                raise ValueError('Incorrect dictionary format, expected \'<token> <cnt>\''   )
           UpperCamelCase						    =					line[:idx]
           UpperCamelCase						    =					len(self.encoder   )




import argparse
import shutil
from pathlib import Path

from tqdm import tqdm

from transformers import AutoTokenizer

def  __lowerCamelCase					( _lowercase						,     _lowercase						,     _lowercase						,     _lowercase=1024			)       ->      Union[str, Any]:
     UpperCamelCase    ,		UpperCamelCase						    =					[], []

     UpperCamelCase						    =					list(zip(_lowercase						,     _lowercase			)			)
     UpperCamelCase    ,		UpperCamelCase						    =					sorted_examples[0]

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

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

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

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

def  __lowerCamelCase					( )       ->      Union[str, Any]:
     UpperCamelCase						    =					argparse.ArgumentParser()
     parser.add_argument('--tok_name'						,     type=_lowercase						,     help='like facebook/bart-large-cnn,t5-base, etc.'			)
     parser.add_argument('--max_seq_len'						,     type=_lowercase						,     default=128			)
     parser.add_argument('--data_dir'						,     type=_lowercase			)
     parser.add_argument('--save_path'						,     type=_lowercase			)
     UpperCamelCase						    =					parser.parse_args()
     UpperCamelCase						    =					AutoTokenizer.from_pretrained(args.tok_name			)
     return pack_data_dir(_lowercase						,     Path(args.data_dir			)						,     args.max_seq_len						,     args.save_path			)


if __name__ == "__main__":
 packer_cli()


