

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

import regex as re

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


_UpperCAmelCase	:     Optional[int]		       = logging.get_logger(__name__)


_UpperCAmelCase	:     str		       = {
    """vocab_file""": """vocab.json""",
    """merges_file""": """merges.txt""",
    """tokenizer_config_file""": """tokenizer_config.json""",
}

_UpperCAmelCase	:     Optional[Any]		       = {
    """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"""
        )
    },
}

_UpperCAmelCase	:     Dict		       = {"""facebook/blenderbot_small-90M""": 512}





def       __lowerCamelCase			(				UpperCamelCase__   ):







							'''simple docstring'''






							snake_case_           =					set()
							snake_case_           =					word[0]
							for char in word[1:]:
														pairs.add((prev_char, char)   )
														snake_case_           =					char

							snake_case_           =					set(UpperCamelCase__   )
							return pairs







class 				lowercase       ( lowercase_    ):
				__SCREAMING_SNAKE_CASE      :				Union[str, Any]     =    VOCAB_FILES_NAMES
				__SCREAMING_SNAKE_CASE      :				Optional[int]     =    PRETRAINED_VOCAB_FILES_MAP
				__SCREAMING_SNAKE_CASE      :				int     =    PRETRAINED_POSITIONAL_EMBEDDINGS_SIZES
				__SCREAMING_SNAKE_CASE      :				str     =    ['''input_ids''', '''attention_mask''']




				def __init__(      self   ,     snake_case   ,     snake_case   ,     snake_case="__start__"   ,     snake_case="__end__"   ,     snake_case="__unk__"   ,     snake_case="__null__"   ,     **snake_case   ,     ):
											super().__init__(unk_token=snake_case   ,     bos_token=snake_case   ,     eos_token=snake_case   ,     pad_token=snake_case   ,     **snake_case )

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




				@property
				def 					a							(      self ):
											return len(self.encoder )




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




				def 					a							(      self   ,     snake_case ):
											if token in self.cache:
																		return self.cache[token]
											snake_case_           =					re.sub('([.,!?()])'   ,     R' \1'   ,     snake_case )
											snake_case_           =					re.sub('(\')'   ,     R' \1 '   ,     snake_case )
											snake_case_           =					re.sub(R'\s{2,}'   ,     ' '   ,     snake_case )
											if "\n" in token:
																		snake_case_           =					token.replace('\n'   ,     ' __newln__' )

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

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

																		if not pairs:
																									words.append(snake_case )
																									continue

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

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

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

																		snake_case_           =					word
																		words.append(snake_case )
											return " ".join(snake_case )




				def 					a							(      self   ,     snake_case ):
											snake_case_           =					[]

											snake_case_           =					re.findall(R'\S+\n?'   ,     snake_case )

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




				def 					a							(      self   ,     snake_case ):
											snake_case_           =					token.lower()
											return self.encoder.get(snake_case   ,     self.encoder.get(self.unk_token ) )




				def 					a							(      self   ,     snake_case ):
											return self.decoder.get(snake_case   ,     self.unk_token )




				def 					a							(      self   ,     snake_case ):
											snake_case_           =					' '.join(snake_case ).replace('@@ '   ,     '' ).strip()
											return out_string




				def 					a							(      self   ,     snake_case   ,     snake_case = None ):
											if not os.path.isdir(snake_case ):
																		logger.error(F'''Vocabulary path ({save_directory}) should be a directory''' )
																		return
											snake_case_           =					os.path.join(
											    snake_case   ,     (filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['vocab_file'] )
											snake_case_           =					os.path.join(
											    snake_case   ,     (filename_prefix + '-' if filename_prefix else '') + VOCAB_FILES_NAMES['merges_file'] )

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

											snake_case_           =					0
											with open(snake_case   ,     '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 snake_case : 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!' )
																																snake_case_           =					token_index
																									writer.write(' '.join(snake_case ) + '\n' )
																									index += 1

											return vocab_file, merge_file







import os

try:
					from .build_directory_md import good_file_paths
except ImportError:
					from build_directory_md import good_file_paths  # type: ignore

_UpperCAmelCase	:     Optional[int]		       = list(good_file_paths())
assert filepaths, "good_file_paths() failed!"

_UpperCAmelCase	:     Dict		       = [file for file in filepaths if file != file.lower()]
if upper_files:
					print(F'''{len(upper_files)} files contain uppercase characters:''')
					print("""\n""".join(upper_files) + """\n""")

_UpperCAmelCase	:     Tuple		       = [file for file in filepaths if """ """ in file]
if space_files:
					print(F'''{len(space_files)} files contain space characters:''')
					print("""\n""".join(space_files) + """\n""")

_UpperCAmelCase	:     Union[str, Any]		       = [file for file in filepaths if """-""" in file]
if hyphen_files:
					print(F'''{len(hyphen_files)} files contain hyphen characters:''')
					print("""\n""".join(hyphen_files) + """\n""")

_UpperCAmelCase	:     List[Any]		       = [file for file in filepaths if os.sep not in file]
if nodir_files:
					print(F'''{len(nodir_files)} files are not in a directory:''')
					print("""\n""".join(nodir_files) + """\n""")

_UpperCAmelCase	:     List[str]		       = len(upper_files + space_files + hyphen_files + nodir_files)
if bad_files:
					import sys

					sys.exit(bad_files)




