






import json
import os
from typing import Dict, List, Optional, Tuple

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


lowerCamelCase__							=     logging.get_logger(__name__)


lowerCamelCase__							=     {
    'vocab_file': 'vocab.json',
    'tokenizer_config_file': 'tokenizer_config.json',
    'merges_file': 'merges.txt',
}

lowerCamelCase__							=     {
    'vocab_file': {
        'facebook/s2t-wav2vec2-large-en-de': (
            'https://huggingface.co/facebook/s2t-wav2vec2-large-en-de/resolve/main/vocab.json'
        ),
    },
    'tokenizer_config_file': {
        'facebook/s2t-wav2vec2-large-en-de': (
            'https://huggingface.co/facebook/s2t-wav2vec2-large-en-de/resolve/main/tokenizer_config.json'
        ),
    },
    'merges_file': {
        'facebook/s2t-wav2vec2-large-en-de': (
            'https://huggingface.co/facebook/s2t-wav2vec2-large-en-de/resolve/main/merges.txt'
        ),
    },
}

lowerCamelCase__							=     '</w>'
lowerCamelCase__							=     '@@ '






def   UpperCamelCase  (       snake_case__     :   List[str]  ):




     '''simple docstring'''






     __snake_case			:int          =						set()
     __snake_case			:str          =						word[0]
     for char in word[1:]:
          pairs.add((prev_char, char)  )
          __snake_case			:str          =						char
     return pairs


# Speech2Text2 has no max input length
lowerCamelCase__							=     {'facebook/s2t-wav2vec2-large-en-de': 1024}






class 			snake_case__   (							lowercase_):

       '''simple docstring'''
       lowerCamelCase							:				Optional[int] 				= VOCAB_FILES_NAMES
       lowerCamelCase							:				List[Any] 				= PRETRAINED_VOCAB_FILES_MAP
       lowerCamelCase							:				Optional[int] 				= PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
       lowerCamelCase							:				int 				= ["input_ids", "attention_mask"]



       def __init__(							self			,						a__			,						a__="<s>"			,						a__="<pad>"			,						a__="</s>"			,						a__="<unk>"			,						a__=False			,						a__=None			,						**a__			,						) ->      List[Any]:






            '''simple docstring'''





            super().__init__(
                unk_token=__A			,						bos_token=__A			,						eos_token=__A			,						pad_token=__A			,						do_lower_case=__A			,						**__A			,						)

            __snake_case			:int          =						do_lower_case

            with open(__A			,						encoding="""utf-8"""    ) as vocab_handle:
                 __snake_case			:List[Any]          =						json.load(__A    )
            __snake_case			:str          =						{v: k for k, v in self.encoder.items()}

            if merges_file is None:
                 logger.info(F'''No merges files provided. {self.__class__.__name__} can only be used for decoding.'''    )

                 __snake_case			:List[Any]          =						None
                 __snake_case			:str          =						None
            else:
                 with open(__A			,						encoding="""utf-8"""    ) as merges_handle:
                      __snake_case			:Optional[Any]          =						merges_handle.read().split("""\n"""    )[:-1]

                 __snake_case			:List[Any]          =						[tuple(merge.split()[:2]    ) for merge in merges]
                 __snake_case			:List[Any]          =						dict(zip(__A			,						range(len(__A    )    )    )    )
                 __snake_case			:Tuple          =						{}



       @property
       def 					__lowercase						(							self    ) ->      Any:






            '''simple docstring'''





            return len(self.decoder    )



       def 					__lowercase						(							self    ) ->      Optional[int]:






            '''simple docstring'''





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



       def 					__lowercase						(							self			,						a__    ) ->      List[Any]:






            '''simple docstring'''





            __snake_case			:Tuple          =						tuple(token[:-1]    ) + (token[-1] + BPE_TOKEN_MERGES,)
            if token in self.cache:
                 return self.cache[token]
            __snake_case			:Optional[Any]          =						get_pairs(__A    )

            if not pairs:
                 return token

            while True:
                 __snake_case			:Any          =						min(__A			,						key=lambda a__    : self.bpe_ranks.get(__A			,						float("""inf"""    )    )    )
                 if bigram not in self.bpe_ranks:
                      break
                 __snake_case			:Optional[Any]          =						bigram
                 __snake_case			:Optional[Any]          =						[]
                 __snake_case			:Any          =						0
                 while i < len(__A    ):
                      try:
                           __snake_case			:Tuple          =						word.index(__A			,						__A    )
                      except ValueError:
                           new_word.extend(word[i:]    )
                           break
                      else:
                           new_word.extend(word[i:j]    )
                           __snake_case			:Union[str, Any]          =						j

                      if word[i] == first and i < len(__A    ) - 1 and word[i + 1] == second:
                           new_word.append(first + second    )
                           i += 2
                      else:
                           new_word.append(word[i]    )
                           i += 1
                 __snake_case			:List[str]          =						tuple(__A    )
                 __snake_case			:Dict          =						new_word
                 if len(__A    ) == 1:
                      break
                 else:
                      __snake_case			:List[Any]          =						get_pairs(__A    )
            __snake_case			:Dict          =						" ".join(__A    )
            if word == "\n  " + BPE_TOKEN_MERGES:
                 __snake_case			:Any          =						"\n" + BPE_TOKEN_MERGES

            if word.endswith(__A    ):
                 __snake_case			:List[str]          =						word.replace(__A			,						""""""    )

            __snake_case			:List[Any]          =						word.replace(""" """			,						__A    )
            __snake_case			:Tuple          =						word
            return word



       def 					__lowercase						(							self			,						a__    ) ->      Dict:






            '''simple docstring'''





            if self.bpe_ranks is None:
                 raise ValueError(
                     """This tokenizer was instantiated without a `merges.txt` file, so"""
                     """ that it can only be used for decoding, not for encoding."""
                     """Make sure to provide `merges.txt` file at instantiation to enable """
                     """encoding."""    )

            if self.do_lower_case:
                 __snake_case			:List[Any]          =						text.lower()

            __snake_case			:Optional[int]          =						text.split()

            __snake_case			:Optional[int]          =						[]
            for token in text:
                 if token:
                      split_tokens.extend(list(self.bpe(__A    ).split(""" """    )    )    )

            return split_tokens



       def 					__lowercase						(							self			,						a__    ) ->      List[Any]:






            '''simple docstring'''





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



       def 					__lowercase						(							self			,						a__    ) ->      int:






            '''simple docstring'''





            __snake_case			:List[Any]          =						self.decoder.get(__A			,						self.unk_token    )
            return result



       def 					__lowercase						(							self			,						a__    ) ->      Dict:






            '''simple docstring'''





            __snake_case			:List[str]          =						" ".join(__A    )

            # make sure @@ tokens are concatenated
            __snake_case			:int          =						"".join(string.split(__A    )    )

            return string



       def 					__lowercase						(							self			,						a__			,						a__ = None    ) ->      Union[str, Any]:






            '''simple docstring'''





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

            with open(__A			,						"""w"""			,						encoding="""utf-8"""    ) as f:
                 f.write(json.dumps(self.encoder			,						indent=2			,						sort_keys=__A			,						ensure_ascii=__A    ) + """\n"""    )

            __snake_case			:Dict          =						0
            if self.bpe_ranks is None:
                 return (vocab_file,)

            with open(__A			,						"""w"""			,						encoding="""utf-8"""    ) as writer:
                 for bpe_tokens, token_index in sorted(self.bpe_ranks.items()			,						key=lambda a__    : kv[1]    ):
                      if index != token_index:
                           logger.warning(
                               F'''Saving vocabulary to {merges_file}: BPE merge indices are not consecutive.'''
                               """ Please check that the tokenizer is not corrupted!"""    )
                           __snake_case			:Any          =						token_index
                      writer.write(""" """.join(__A    ) + """\n"""    )
                      index += 1

            return (vocab_file, merges_file)










def   UpperCamelCase  (       snake_case__     :   str  ):




     '''simple docstring'''






     __snake_case			:List[Any]          =						hex_num.strip()
     if not hex_num:
          raise ValueError("""No value was passed to the function"""  )

     __snake_case			:str          =						hex_num[0] == """-"""
     if is_negative:
          __snake_case			:List[Any]          =						hex_num[1:]

     try:
          __snake_case			:Tuple          =						int(snake_case__	,16  )
     except ValueError:
          raise ValueError("""Invalid value was passed to the function"""  )

     __snake_case			:int          =						""""""
     while int_num > 0:
          __snake_case			:Optional[int]          =						str(int_num % 2  ) + bin_str
          int_num >>= 1

     return int(("""-""" + bin_str) if is_negative else bin_str  )


if __name__ == "__main__":
     import doctest

     doctest.testmod()


