import os
import sys
from contextlib import contextmanager


# Windows only
if os.name == "nt":
		import ctypes
		import msvcrt  # noqa




		class 			UpperCAmelCase_      (   ctypes.Structure       ):




									'''simple docstring'''



									a__						  =     [('''size''', ctypes.c_int), ('''visible''', ctypes.c_byte)]
def 					lowerCamelCase_    (    ):
			'''simple docstring'''

			if os.name == "nt":
						SCREAMING_SNAKE_CASE           =					CursorInfo()
						SCREAMING_SNAKE_CASE           =					ctypes.windll.kernelaa.GetStdHandle(-11   )
						ctypes.windll.kernelaa.GetConsoleCursorInfo(UpperCAmelCase__					,	ctypes.byref(UpperCAmelCase__   )   )
						SCREAMING_SNAKE_CASE           =					False
						ctypes.windll.kernelaa.SetConsoleCursorInfo(UpperCAmelCase__					,	ctypes.byref(UpperCAmelCase__   )   )
			elif os.name == "posix":
						sys.stdout.write("""\033[?25l"""   )
						sys.stdout.flush()
def 					lowerCamelCase_    (    ):
			'''simple docstring'''

			if os.name == "nt":
						SCREAMING_SNAKE_CASE           =					CursorInfo()
						SCREAMING_SNAKE_CASE           =					ctypes.windll.kernelaa.GetStdHandle(-11   )
						ctypes.windll.kernelaa.GetConsoleCursorInfo(UpperCAmelCase__					,	ctypes.byref(UpperCAmelCase__   )   )
						SCREAMING_SNAKE_CASE           =					True
						ctypes.windll.kernelaa.SetConsoleCursorInfo(UpperCAmelCase__					,	ctypes.byref(UpperCAmelCase__   )   )
			elif os.name == "posix":
						sys.stdout.write("""\033[?25h"""   )
						sys.stdout.flush()




@contextmanager
def 					lowerCamelCase_    (    ):
			'''simple docstring'''

			try:
						hide_cursor()
						yield
			finally:
						show_cursor()












from __future__ import annotations




class 			UpperCAmelCase_      :




							'''simple docstring'''



							def __init__(					self       :	Optional[int]       ,     a       :	int = 0			)			->					str:
										SCREAMING_SNAKE_CASE           =					key





							def    _UpperCAmelCase     (					self       :	Tuple       ,     a       :	str       ,     a       :	int			)			->					list[str]:
										assert isinstance(a       ,     a			) and isinstance(a       ,     a			)

										SCREAMING_SNAKE_CASE           =					key or self.__key or 1

										# make sure key is an appropriate size
										key %= 255

										return [chr(ord(a			) ^ key			) for ch in content]





							def    _UpperCAmelCase     (					self       :	Union[str, Any]       ,     a       :	str       ,     a       :	int			)			->					list[str]:
										assert isinstance(a       ,     a			) and isinstance(a       ,     a			)

										SCREAMING_SNAKE_CASE           =					key or self.__key or 1

										# make sure key is an appropriate size
										key %= 255

										return [chr(ord(a			) ^ key			) for ch in content]





							def    _UpperCAmelCase     (					self       :	Union[str, Any]       ,     a       :	str       ,     a       :	int = 0			)			->					str:
										assert isinstance(a       ,     a			) and isinstance(a       ,     a			)

										SCREAMING_SNAKE_CASE           =					key or self.__key or 1

										# make sure key can be any size
										while key > 255:
													key -= 255

										# This will be returned
										SCREAMING_SNAKE_CASE           =					""""""

										for ch in content:
													ans += chr(ord(a			) ^ key			)

										return ans





							def    _UpperCAmelCase     (					self       :	Dict       ,     a       :	str       ,     a       :	int = 0			)			->					str:
										assert isinstance(a       ,     a			) and isinstance(a       ,     a			)

										SCREAMING_SNAKE_CASE           =					key or self.__key or 1

										# make sure key can be any size
										while key > 255:
													key -= 255

										# This will be returned
										SCREAMING_SNAKE_CASE           =					""""""

										for ch in content:
													ans += chr(ord(a			) ^ key			)

										return ans





							def    _UpperCAmelCase     (					self       :	Optional[int]       ,     a       :	str       ,     a       :	int = 0			)			->					bool:
										assert isinstance(a       ,     a			) and isinstance(a       ,     a			)

										try:
													with open(a			) as fin, open("""encrypt.out"""       ,     """w+"""			) as fout:
																# actual encrypt-process
																for line in fin:
																			fout.write(self.encrypt_string(a       ,     a			)			)

										except OSError:
													return False

										return True







							def    _UpperCAmelCase     (					self       :	Dict       ,     a       :	str       ,     a       :	int			)			->					bool:
										assert isinstance(a       ,     a			) and isinstance(a       ,     a			)

										try:
													with open(a			) as fin, open("""decrypt.out"""       ,     """w+"""			) as fout:
																# actual encrypt-process
																for line in fin:
																			fout.write(self.decrypt_string(a       ,     a			)			)

										except OSError:
													return False

										return True


# Tests
# crypt = XORCipher()
# key = 67

# # test encrypt
# print(crypt.encrypt("hallo welt",key))
# # test decrypt
# print(crypt.decrypt(crypt.encrypt("hallo welt",key), key))

# # test encrypt_string
# print(crypt.encrypt_string("hallo welt",key))

# # test decrypt_string
# print(crypt.decrypt_string(crypt.encrypt_string("hallo welt",key),key))

# if (crypt.encrypt_file("test.txt",key)):
#       print("encrypt successful")
# else:
#       print("encrypt unsuccessful")

# if (crypt.decrypt_file("encrypt.out",key)):
#       print("decrypt successful")
# else:
#       print("decrypt unsuccessful")






