



"""simple docstring"""

import argparse
import shutil
from pathlib import Path

from tqdm import tqdm

from transformers import AutoTokenizer







def 							SCREAMING_SNAKE_CASE__      (		SCREAMING_SNAKE_CASE__ :  Any				,    SCREAMING_SNAKE_CASE__ :  Dict				,    SCREAMING_SNAKE_CASE__ :  Optional[Any]				,    SCREAMING_SNAKE_CASE__ :  Union[str, Any]=1_0_2_4			):



					"""simple docstring"""





					snake_case_					,			snake_case_					:		Any 					=					[], []

					snake_case_					:		Union[str, Any] 					=					list(zip(SCREAMING_SNAKE_CASE__				,    SCREAMING_SNAKE_CASE__			)			)
					snake_case_					,			snake_case_					:		Union[str, Any] 					=					sorted_examples[0]

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

					for src, tgt in tqdm(sorted_examples[1:]			):
										snake_case_					:		Any 					=					new_src + """ """ + src
										snake_case_					:		str 					=					new_tgt + """ """ + tgt
										if is_too_big(SCREAMING_SNAKE_CASE__			) or is_too_big(SCREAMING_SNAKE_CASE__			):  # cant fit, finalize example
															finished_src.append(SCREAMING_SNAKE_CASE__			)
															finished_tgt.append(SCREAMING_SNAKE_CASE__			)
															snake_case_					,			snake_case_					:		int 					=					src, tgt
										else:  # can fit, keep adding
															snake_case_					,			snake_case_					:		Any 					=					cand_src, cand_tgt

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







def 							SCREAMING_SNAKE_CASE__      (		SCREAMING_SNAKE_CASE__ :  Union[str, Any]				,    SCREAMING_SNAKE_CASE__ :  Path				,    SCREAMING_SNAKE_CASE__ :  Tuple				,    SCREAMING_SNAKE_CASE__ :  Tuple			):



					"""simple docstring"""





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







def 							SCREAMING_SNAKE_CASE__      (		):



					"""simple docstring"""





					snake_case_					:		str 					=					argparse.ArgumentParser()
					parser.add_argument("""--tok_name"""				,    type=SCREAMING_SNAKE_CASE__				,    help="""like facebook/bart-large-cnn,t5-base, etc."""			)
					parser.add_argument("""--max_seq_len"""				,    type=SCREAMING_SNAKE_CASE__				,    default=1_2_8			)
					parser.add_argument("""--data_dir"""				,    type=SCREAMING_SNAKE_CASE__			)
					parser.add_argument("""--save_path"""				,    type=SCREAMING_SNAKE_CASE__			)
					snake_case_					:		Optional[int] 					=					parser.parse_args()
					snake_case_					:		Optional[Any] 					=					AutoTokenizer.from_pretrained(args.tok_name			)
					return pack_data_dir(SCREAMING_SNAKE_CASE__				,    Path(args.data_dir			)				,    args.max_seq_len				,    args.save_path			)


if __name__ == "__main__":
			packer_cli()









"""simple docstring"""

from copy import deepcopy







class    __lowercase     :







						"""simple docstring"""







						def __init__(self   ,		lowercase__ = None   ,		lowercase__ = None       ):

											if arr is None and size is not None:
																snake_case_					:		str 					=					size
																snake_case_					:		Optional[Any] 					=					[0] * size
											elif arr is not None:
																self.init(lowercase__       )
											else:
																raise ValueError("""Either arr or size must be specified"""       )







						def 						__UpperCamelCase							(self   ,		lowercase__       ):
											snake_case_					:		Optional[Any] 					=					len(lowercase__       )
											snake_case_					:		int 					=					deepcopy(lowercase__       )
											for i in range(1   ,		self.size       ):
																snake_case_					:		Optional[Any] 					=					self.next_(lowercase__       )
																if j < self.size:
																					self.tree[j] += self.tree[i]







						def 						__UpperCamelCase							(self       ):
											snake_case_					:		Dict 					=					self.tree[:]
											for i in range(self.size - 1   ,		0   ,		-1       ):
																snake_case_					:		Optional[int] 					=					self.next_(lowercase__       )
																if j < self.size:
																					arr[j] -= arr[i]
											return arr







						@staticmethod
						def 						__UpperCamelCase							(lowercase__       ):
											return index + (index & (-index))







						@staticmethod
						def 						__UpperCamelCase							(lowercase__       ):
											return index - (index & (-index))







						def 						__UpperCamelCase							(self   ,		lowercase__   ,		lowercase__       ):
											if index == 0:
																self.tree[0] += value
																return
											while index < self.size:
																self.tree[index] += value
																snake_case_					:		Tuple 					=					self.next_(lowercase__       )







						def 						__UpperCamelCase							(self   ,		lowercase__   ,		lowercase__       ):
											self.add(lowercase__   ,		value - self.get(lowercase__       )       )







						def 						__UpperCamelCase							(self   ,		lowercase__       ):
											if right == 0:
																return 0
											snake_case_					:		List[str] 					=					self.tree[0]
											right -= 1  # make right inclusive
											while right > 0:
																result += self.tree[right]
																snake_case_					:		Optional[int] 					=					self.prev(lowercase__       )
											return result







						def 						__UpperCamelCase							(self   ,		lowercase__   ,		lowercase__       ):
											return self.prefix(lowercase__       ) - self.prefix(lowercase__       )







						def 						__UpperCamelCase							(self   ,		lowercase__       ):
											return self.query(lowercase__   ,		index + 1       )







						def 						__UpperCamelCase							(self   ,		lowercase__       ):
											value -= self.tree[0]
											if value < 0:
																return -1

											snake_case_					:		Tuple 					=					1  # Largest power of 2 <= size
											while j * 2 < self.size:
																j *= 2

											snake_case_					:		Tuple 					=					0

											while j > 0:
																if i + j < self.size and self.tree[i + j] <= value:
																					value -= self.tree[i + j]
																					i += j
																j //= 2
											return i


if __name__ == "__main__":
			import doctest

			doctest.testmod()




