"""simple docstring"""






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

import regex as re

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


lowerCAmelCase__						:						List[str]		  =			logging.get_logger(__name__)


lowerCAmelCase__						:						List[Any]		  =			{
    'vocab_file': 'vocab.json',
    'merges_file': 'merges.txt',
    'tokenizer_config_file': 'tokenizer_config.json',
}

lowerCAmelCase__						:						Optional[int]		  =			{
    'vocab_file': {
        'facebook/blenderbot_small-90M': 'https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/vocab.json'
    },
    'merges_file': {
        'facebook/blenderbot_small-90M': 'https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/merges.txt'
    },
    'tokenizer_config_file': {
        'facebook/blenderbot_small-90M': (
            'https://huggingface.co/facebook/blenderbot_small-90M/resolve/main/tokenizer_config.json'
        )
    },
}

lowerCAmelCase__						:						Any		  =			{'facebook/blenderbot_small-90M': 512}



def 						a_		(      lowerCamelCase ):
				UpperCAmelCase__    =							set()
				UpperCAmelCase__    =							word[0]
				for char in word[1:]:
								pairs.add((prev_char, char) )
								UpperCAmelCase__    =							char

				UpperCAmelCase__    =							set(lowerCamelCase )
				return pairs







class        snake_case (				__UpperCAmelCase       ):




					"""simple docstring"""

					snake_case__       					=				VOCAB_FILES_NAMES
					snake_case__       					=				PRETRAINED_VOCAB_FILES_MAP
					snake_case__       					=				PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
					snake_case__       					=				["input_ids", "attention_mask"]







					def __init__(       self     :			Tuple					,lowerCamelCase__     :			Union[str, Any]					,lowerCamelCase__     :			Dict					,lowerCamelCase__     :			Tuple="__start__"					,lowerCamelCase__     :			Tuple="__end__"					,lowerCamelCase__     :			Optional[int]="__unk__"					,lowerCamelCase__     :			List[Any]="__null__"					,**lowerCamelCase__     :			Optional[int]					,):
									super().__init__(unk_token=lowerCamelCase__					,bos_token=lowerCamelCase__					,eos_token=lowerCamelCase__					,pad_token=lowerCamelCase__					,**lowerCamelCase__    )

									with open(lowerCamelCase__					,encoding='utf-8'    ) as vocab_handle:
													UpperCAmelCase__    =							json.load(lowerCamelCase__    )
									UpperCAmelCase__    =							{v: k for k, v in self.encoder.items()}
									with open(lowerCamelCase__					,encoding='utf-8'    ) as merges_handle:
													UpperCAmelCase__    =							merges_handle.read().split('\n'    )[1:-1]
									UpperCAmelCase__    =							[tuple(merge.split()    ) for merge in merges]
									UpperCAmelCase__    =							dict(zip(lowerCamelCase__					,range(len(lowerCamelCase__    )    )    )    )
									UpperCAmelCase__    =							{}







					@property
					def 	__lowerCAmelCase		(       self     :			Optional[Any]    ):
									return len(self.encoder    )







					def 	__lowerCAmelCase		(       self     :			str    ):
									return dict(self.encoder					,**self.added_tokens_encoder    )







					def 	__lowerCAmelCase		(       self     :			Union[str, Any]					,lowerCamelCase__     :			str    ):
									if token in self.cache:
													return self.cache[token]
									UpperCAmelCase__    =							re.sub('([.,!?()])'					,R' \1'					,lowerCamelCase__    )
									UpperCAmelCase__    =							re.sub('(\')'					,R' \1 '					,lowerCamelCase__    )
									UpperCAmelCase__    =							re.sub(R'\s{2,}'					,' '					,lowerCamelCase__    )
									if "\n" in token:
													UpperCAmelCase__    =							token.replace('\n'					,' __newln__'    )

									UpperCAmelCase__    =							token.split(' '    )
									UpperCAmelCase__    =							[]
									for token in tokens:
													if not len(lowerCamelCase__    ):
																	continue

													UpperCAmelCase__    =							token.lower()
													UpperCAmelCase__    =							tuple(lowerCamelCase__    )
													UpperCAmelCase__    =							tuple(list(word[:-1]    ) + [word[-1] + '</w>']    )
													UpperCAmelCase__    =							get_pairs(lowerCamelCase__    )

													if not pairs:
																	words.append(lowerCamelCase__    )
																	continue

													while True:
																	UpperCAmelCase__    =							min(lowerCamelCase__					,key=lambda lowerCamelCase__    : self.bpe_ranks.get(lowerCamelCase__					,float('inf'    )    )    )
																	if bigram not in self.bpe_ranks:
																					break
																	UpperCAmelCase__   ,			UpperCAmelCase__    =							bigram
																	UpperCAmelCase__    =							[]
																	UpperCAmelCase__    =							0

																	while i < len(lowerCamelCase__    ):
																					try:
																									UpperCAmelCase__    =							word.index(lowerCamelCase__					,lowerCamelCase__    )
																									new_word.extend(word[i:j]    )
																									UpperCAmelCase__    =							j
																					except ValueError:
																									new_word.extend(word[i:]    )
																									break

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

													UpperCAmelCase__    =							word
													words.append(lowerCamelCase__    )
									return " ".join(lowerCamelCase__    )







					def 	__lowerCAmelCase		(       self     :			Dict					,lowerCamelCase__     :			str    ):
									UpperCAmelCase__    =							[]

									UpperCAmelCase__    =							re.findall(R'\S+\n?'					,lowerCamelCase__    )

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







					def 	__lowerCAmelCase		(       self     :			str					,lowerCamelCase__     :			str    ):
									UpperCAmelCase__    =							token.lower()
									return self.encoder.get(lowerCamelCase__					,self.encoder.get(self.unk_token    )    )







					def 	__lowerCAmelCase		(       self     :			List[Any]					,lowerCamelCase__     :			int    ):
									return self.decoder.get(lowerCamelCase__					,self.unk_token    )







					def 	__lowerCAmelCase		(       self     :			Optional[int]					,lowerCamelCase__     :			List[str]    ):
									UpperCAmelCase__    =							' '.join(lowerCamelCase__    ).replace('@@ '					,''    ).strip()
									return out_string







					def 	__lowerCAmelCase		(       self     :			List[str]					,lowerCamelCase__     :			str					,lowerCamelCase__     :			Optional[str] = None    ):
									if not os.path.isdir(lowerCamelCase__    ):
													logger.error(f'''Vocabulary path ({save_directory}) should be a directory'''    )
													return
									UpperCAmelCase__    =							os.path.join(
									    lowerCamelCase__					,(filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['vocab_file']    )
									UpperCAmelCase__    =							os.path.join(
									    lowerCamelCase__					,(filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['merges_file']    )

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

									UpperCAmelCase__    =							0
									with open(lowerCamelCase__					,'w'					,encoding='utf-8'    ) as writer:
													writer.write('#version: 0.2\n'    )
													for bpe_tokens, token_index in sorted(self.bpe_ranks.items()					,key=lambda lowerCamelCase__    : kv[1]    ):
																	if index != token_index:
																					logger.warning(
																					    f'''Saving vocabulary to {merge_file}: BPE merge indices are not consecutive.'''
																					    ' Please check that the tokenizer is not corrupted!'    )
																					UpperCAmelCase__    =							token_index
																	writer.write(' '.join(lowerCamelCase__    ) + '\n'    )
																	index += 1

									return vocab_file, merge_file




"""simple docstring"""






import re



def 						a_		(      lowerCamelCase ):
				return [char.split() for char in re.split(r'[^ a-z A-Z 0-9 \s]'      ,    str_ )]



def 						a_		(      lowerCamelCase ):
				UpperCAmelCase__    =							split_input(str_ )
				return "".join(
				    [''.join([char.capitalize() for char in sub_str] ) for sub_str in string_split] )



def 						a_		(      lowerCamelCase      ,    lowerCamelCase      ,    lowerCamelCase ):
				try:
								UpperCAmelCase__    =							split_input(lowerCamelCase )
								if upper:
												UpperCAmelCase__    =							''.join(
												    [
												        separator.join([char.upper() for char in sub_str] )
												        for sub_str in string_split
												    ] )
								else:
												UpperCAmelCase__    =							''.join(
												    [
												        separator.join([char.lower() for char in sub_str] )
												        for sub_str in string_split
												    ] )
								return res_str
				except IndexError:
								return "not valid string"



def 						a_		(      lowerCamelCase ):
				return to_simple_case(lowerCamelCase )



def 						a_		(      lowerCamelCase ):
				try:
								UpperCAmelCase__    =							to_simple_case(lowerCamelCase )
								return res_str[0].lower() + res_str[1:]
				except IndexError:
								return "not valid string"



def 						a_		(      lowerCamelCase      ,    lowerCamelCase ):
				return to_complex_case(lowerCamelCase      ,    lowerCamelCase      ,    '_' )



def 						a_		(      lowerCamelCase      ,    lowerCamelCase ):
				return to_complex_case(lowerCamelCase      ,    lowerCamelCase      ,    '-' )


if __name__ == "__main__":
						__import__('doctest').testmod()



