



"""simple docstring"""






import os
import string
import sys


_lowercase			:			Union[str, Any]										=						1 << 8

_lowercase			:			Optional[int]										=						{
    "tab": ord("\t"),
    "newline": ord("\r"),
    "esc": 2_7,
    "up": 6_5 + ARROW_KEY_FLAG,
    "down": 6_6 + ARROW_KEY_FLAG,
    "right": 6_7 + ARROW_KEY_FLAG,
    "left": 6_8 + ARROW_KEY_FLAG,
    "mod_int": 9_1,
    "undefined": sys.maxsize,
    "interrupt": 3,
    "insert": 5_0,
    "delete": 5_1,
    "pg_up": 5_3,
    "pg_down": 5_4,
}

_lowercase			:			Union[str, Any]										=						KEYMAP["up"]
_lowercase			:			List[Any]										=						KEYMAP["left"]

if sys.platform == "win32":
		_lowercase			:			str										=						[]
		_lowercase			:			Optional[int]										=						{
		    B"\xe0H": KEYMAP["up"] - ARROW_KEY_FLAG,
		    B"\x00H": KEYMAP["up"] - ARROW_KEY_FLAG,
		    B"\xe0P": KEYMAP["down"] - ARROW_KEY_FLAG,
		    B"\x00P": KEYMAP["down"] - ARROW_KEY_FLAG,
		    B"\xe0M": KEYMAP["right"] - ARROW_KEY_FLAG,
		    B"\x00M": KEYMAP["right"] - ARROW_KEY_FLAG,
		    B"\xe0K": KEYMAP["left"] - ARROW_KEY_FLAG,
		    B"\x00K": KEYMAP["left"] - ARROW_KEY_FLAG,
		}

for i in range(1_0):
		_lowercase			:			Any										=						ord(str(i))






def 					snake_case__       (		) ->    Dict:
			"""simple docstring"""
			if os.name == "nt":
						import msvcrt

						lowerCamelCase__		:		Optional[Any]		     ='''mbcs'''
						# Flush the keyboard buffer
						while msvcrt.kbhit():
									msvcrt.getch()
						if len(__lowerCamelCase     ) == 0:
									# Read the keystroke
									lowerCamelCase__		:		Optional[Any]		     =msvcrt.getch()

									# If it is a prefix char, get second part
									if ch in (b"\x00", b"\xe0"):
												lowerCamelCase__		:		str		     =ch + msvcrt.getch()
												# Translate actual Win chars to bullet char types
												try:
															lowerCamelCase__		:		str		     =chr(WIN_KEYMAP[cha]     )
															WIN_CH_BUFFER.append(chr(KEYMAP['''mod_int''']     )     )
															WIN_CH_BUFFER.append(__lowerCamelCase     )
															if ord(__lowerCamelCase     ) in (
															    KEYMAP["insert"] - 1 << 9,
															    KEYMAP["delete"] - 1 << 9,
															    KEYMAP["pg_up"] - 1 << 9,
															    KEYMAP["pg_down"] - 1 << 9,
															):
																		WIN_CH_BUFFER.append(chr(126     )     )
															lowerCamelCase__		:		Union[str, Any]		     =chr(KEYMAP['''esc''']     )
												except KeyError:
															lowerCamelCase__		:		str		     =cha[1]
									else:
												lowerCamelCase__		:		str		     =ch.decode(__lowerCamelCase     )
						else:
									lowerCamelCase__		:		Optional[Any]		     =WIN_CH_BUFFER.pop(0     )
			elif os.name == "posix":
						import termios
						import tty

						lowerCamelCase__		:		Dict		     =sys.stdin.fileno()
						lowerCamelCase__		:		str		     =termios.tcgetattr(__lowerCamelCase     )
						try:
									tty.setraw(__lowerCamelCase     )
									lowerCamelCase__		:		Union[str, Any]		     =sys.stdin.read(1     )
						finally:
									termios.tcsetattr(__lowerCamelCase							,		termios.TCSADRAIN							,		__lowerCamelCase     )
			return ch






def 					snake_case__       (		) ->    Union[str, Any]:
			"""simple docstring"""
			lowerCamelCase__		:		int		     =get_raw_chars()
			if ord(__lowerCamelCase     ) in [KEYMAP["interrupt"], KEYMAP["newline"]]:
						return char

			elif ord(__lowerCamelCase     ) == KEYMAP["esc"]:
						lowerCamelCase__		:		Tuple		     =get_raw_chars()
						if ord(__lowerCamelCase     ) == KEYMAP["mod_int"]:
									lowerCamelCase__		:		List[str]		     =get_raw_chars()
									if ord(__lowerCamelCase     ) >= KEYMAP["arrow_begin"] - ARROW_KEY_FLAG and ord(__lowerCamelCase     ) <= KEYMAP["arrow_end"] - ARROW_KEY_FLAG:
												return chr(ord(__lowerCamelCase     ) + ARROW_KEY_FLAG     )
									else:
												return KEYMAP["undefined"]
						else:
									return get_raw_chars()

			else:
						if char in string.printable:
									return char
						else:
									return KEYMAP["undefined"]









"""simple docstring"""






import os
from collections import deque

import torch
from torch.utils.data import Dataset

class 	__SCREAMING_SNAKE_CASE     (				lowerCAmelCase_       ):


					'''simple docstring'''





					def __init__(	self							:  List[Any],  lowerCamelCase							:  Dict="",  lowerCamelCase							:  Tuple="train"					)-> Dict:
								assert os.path.isdir(lowerCamelCase					)

								lowerCamelCase__		:		Optional[Any]		     =[]
								lowerCamelCase__		:		Dict		     =os.listdir(lowerCamelCase					)
								for story_filename in story_filenames_list:
											if "summary" in story_filename:
														continue
											lowerCamelCase__		:		Optional[int]		     =os.path.join(lowerCamelCase,  lowerCamelCase					)
											if not os.path.isfile(lowerCamelCase					):
														continue
											self.documents.append(lowerCamelCase					)



					def __len__(	self							:  Optional[Any]					)-> List[str]:
								return len(self.documents					)




					def __getitem__(	self							:  List[str],  lowerCamelCase							:  Dict					)-> str:
								lowerCamelCase__		:		int		     =self.documents[idx]
								lowerCamelCase__		:		List[Any]		     =document_path.split('''/'''					)[-1]
								with open(lowerCamelCase,  encoding='''utf-8'''					) as source:
											lowerCamelCase__		:		Optional[int]		     =source.read()
											lowerCamelCase__     ,       lowerCamelCase__		:		List[Any]		     =process_story(lowerCamelCase					)
								return document_name, story_lines, summary_lines






def 					snake_case__       (		__lowerCamelCase    :   int     ):
			"""simple docstring"""
			lowerCamelCase__		:		List[str]		     =list(filter(lambda __lowerCamelCase     : len(__lowerCamelCase     ) != 0							,		[line.strip() for line in raw_story.split('''\n'''     )]     )     )

			# for some unknown reason some lines miss a period, add it
			lowerCamelCase__		:		Dict		     =[_add_missing_period(__lowerCamelCase     ) for line in nonempty_lines]

			# gather article lines
			lowerCamelCase__		:		Union[str, Any]		     =[]
			lowerCamelCase__		:		Optional[Any]		     =deque(__lowerCamelCase     )
			while True:
						try:
									lowerCamelCase__		:		Tuple		     =lines.popleft()
									if element.startswith('''@highlight'''     ):
												break
									story_lines.append(__lowerCamelCase     )
						except IndexError:
									# if "@highlight" is absent from the file we pop
									# all elements until there is None, raising an exception.
									return story_lines, []

    # gather summary lines
			lowerCamelCase__		:		Dict		     =list(filter(lambda __lowerCamelCase     : not t.startswith('''@highlight'''     )							,		__lowerCamelCase     )     )

			return story_lines, summary_lines






def 					snake_case__       (		__lowerCamelCase    :   str     ):
			"""simple docstring"""
			lowerCamelCase__		:		Any		     =['''.''', '''!''', '''?''', '''...''', '''\'''', '''`''', '''"''', '''\u2019''', '''\u2019''', ''')''']
			if line.startswith('''@highlight'''     ):
						return line
			if line[-1] in END_TOKENS:
						return line
			return line + "."






def 					snake_case__       (		__lowerCamelCase    :   Dict							,		__lowerCamelCase    :   Union[str, Any]							,		__lowerCamelCase    :   List[Any]     ):
			"""simple docstring"""
			if len(__lowerCamelCase     ) > block_size:
						return sequence[:block_size]
			else:
						sequence.extend([pad_token_id] * (block_size - len(__lowerCamelCase     ))     )
						return sequence






def 					snake_case__       (		__lowerCamelCase    :   Tuple							,		__lowerCamelCase    :   str     ):
			"""simple docstring"""
			lowerCamelCase__		:		int		     =torch.ones_like(__lowerCamelCase     )
			lowerCamelCase__		:		Any		     =sequence == pad_token_id
			lowerCamelCase__		:		List[str]		     =0
			return mask






def 					snake_case__       (		__lowerCamelCase    :   str							,		__lowerCamelCase    :   Optional[Any]							,		__lowerCamelCase    :   Optional[Any]     ):
			"""simple docstring"""
			lowerCamelCase__		:		Dict		     =[tokenizer.encode(__lowerCamelCase     ) for line in story_lines]
			lowerCamelCase__		:		List[Any]		     =[token for sentence in story_lines_token_ids for token in sentence]
			lowerCamelCase__		:		List[Any]		     =[tokenizer.encode(__lowerCamelCase     ) for line in summary_lines]
			lowerCamelCase__		:		Optional[int]		     =[token for sentence in summary_lines_token_ids for token in sentence]

			return story_token_ids, summary_token_ids






def 					snake_case__       (		__lowerCamelCase    :   Tuple							,		__lowerCamelCase    :   Optional[int]     ):
			"""simple docstring"""
			lowerCamelCase__		:		Any		     =[]
			for sequence in batch:
						lowerCamelCase__		:		Optional[int]		     =-1
						lowerCamelCase__		:		List[str]		     =[]
						for s in sequence:
									if s == separator_token_id:
												sentence_num += 1
									embeddings.append(sentence_num % 2     )
						batch_embeddings.append(__lowerCamelCase     )
			return torch.tensor(__lowerCamelCase     )




