


import logging
import os
import threading
import time


try:
			import warnings
except ImportError:
			lowerCAmelCase       =							None

try:
			import msvcrt
except ImportError:
			lowerCAmelCase       =							None

try:
			import fcntl
except ImportError:
			lowerCAmelCase       =							None


# Backward compatibility
# ------------------------------------------------
try:
			TimeoutError
except NameError:
			lowerCAmelCase       =							OSError


# Data
# ------------------------------------------------
lowerCAmelCase       =							[
    'Timeout',
    'BaseFileLock',
    'WindowsFileLock',
    'UnixFileLock',
    'SoftFileLock',
    'FileLock',
]

lowerCAmelCase       =							'3.0.12'


lowerCAmelCase       =							None
def 			_a (      ):


		"""simple docstring"""




		global _logger
		lowercase__            =      _logger or logging.getLogger(__name__     )
		return _logger


class        _a							(			UpperCamelCase__			):

							def __init__(							self:	List[Any]    ,						UpperCamelCase_:	Optional[int]							)			->   Optional[Any]:





									"""simple docstring"""







									lowercase__            =      lock_file
									return None


							def __str__(							self:	List[Any]							)			->   Any:





									"""simple docstring"""







									lowercase__            =      f'The file lock \'{self.lock_file}\' could not be acquired.'
									return temp


class        _a							:

							def __init__(							self:	List[Any]    ,						UpperCamelCase_:	Any							)			->   Optional[int]:





									"""simple docstring"""







									lowercase__            =      lock
									return None

							def __enter__(							self:	List[Any]							)			->   Optional[Any]:





									"""simple docstring"""







									return self.lock


							def __exit__(							self:	Optional[int]    ,						UpperCamelCase_:	Any    ,						UpperCamelCase_:	int    ,						UpperCamelCase_:	Optional[int]							)			->   Any:





									"""simple docstring"""







									self.lock.release()
									return None


class        _a							:

							def __init__(							self:	Optional[Any]    ,						UpperCamelCase_:	str    ,						UpperCamelCase_:	Tuple=-1    ,						UpperCamelCase_:	List[Any]=None							)			->   Dict:





									"""simple docstring"""







									lowercase__            =      max_filename_length if max_filename_length is not None else 255
									# Hash the filename if it's too long
									lowercase__            =      self.hash_filename_if_too_long(UpperCamelCase_    ,						UpperCamelCase_							)
									# The path to the lock file.
									lowercase__            =      lock_file

									# The file descriptor for the *_lock_file* as it is returned by the
									# os.open() function.
									# This file lock is only NOT None, if the object currently holds the
									# lock.
									lowercase__            =      None

									# The default timeout value.
									lowercase__            =      timeout

									# We use this lock primarily for the lock counter.
									lowercase__            =      threading.Lock()

									# The lock counter is used for implementing the nested locking
									# mechanism. Whenever the lock is acquired, the counter is increased and
									# the lock is only released, when this value is 0 again.
									lowercase__            =      0
									return None

							@property
							def       lowerCamelCase_ (							self:	Tuple							)			->   Union[str, Any]:





									"""simple docstring"""







									return self._lock_file

							@property
							def       lowerCamelCase_ (							self:	int							)			->   str:





									"""simple docstring"""







									return self._timeout

							@timeout.setter
							def       lowerCamelCase_ (							self:	Optional[Any]    ,						UpperCamelCase_:	Dict							)			->   str:





									"""simple docstring"""







									lowercase__            =      float(UpperCamelCase_							)
									return None

							def       lowerCamelCase_ (							self:	List[str]							)			->   Any:





									"""simple docstring"""







									raise NotImplementedError()

							def       lowerCamelCase_ (							self:	Tuple							)			->   Optional[int]:





									"""simple docstring"""







									raise NotImplementedError()

							@property
							def       lowerCamelCase_ (							self:	Dict							)			->   int:





									"""simple docstring"""







									return self._lock_file_fd is not None

							def       lowerCamelCase_ (							self:	List[Any]    ,						UpperCamelCase_:	Union[str, Any]=None    ,						UpperCamelCase_:	Optional[Any]=0.05							)			->   str:





									"""simple docstring"""







									if timeout is None:
											lowercase__            =      self.timeout

									# Increment the number right at the beginning.
									# We can still undo it, if something fails.
									with self._thread_lock:
											self._lock_counter += 1

									lowercase__            =      id(self							)
									lowercase__            =      self._lock_file
									lowercase__            =      time.time()
									try:
											while True:
													with self._thread_lock:
															if not self.is_locked:
																	logger().debug(f'Attempting to acquire lock {lock_id} on {lock_filename}'							)
																	self._acquire()

													if self.is_locked:
															logger().debug(f'Lock {lock_id} acquired on {lock_filename}'							)
															break
													elif timeout >= 0 and time.time() - start_time > timeout:
															logger().debug(f'Timeout on acquiring lock {lock_id} on {lock_filename}'							)
															raise Timeout(self._lock_file							)
													else:
															logger().debug(
															    f'Lock {lock_id} not acquired on {lock_filename}, waiting {poll_intervall} seconds ...'							)
															time.sleep(UpperCamelCase_							)
									except:  # noqa
											# Something did go wrong, so decrement the counter.
											with self._thread_lock:
													lowercase__            =      max(0    ,						self._lock_counter - 1							)

											raise
									return _Acquire_ReturnProxy(lock=self							)

							def       lowerCamelCase_ (							self:	Any    ,						UpperCamelCase_:	int=False							)			->   int:





									"""simple docstring"""







									with self._thread_lock:
											if self.is_locked:
													self._lock_counter -= 1

													if self._lock_counter == 0 or force:
															lowercase__            =      id(self							)
															lowercase__            =      self._lock_file

															logger().debug(f'Attempting to release lock {lock_id} on {lock_filename}'							)
															self._release()
															lowercase__            =      0
															logger().debug(f'Lock {lock_id} released on {lock_filename}'							)

									return None

							def __enter__(							self:	Optional[int]							)			->   Tuple:





									"""simple docstring"""







									self.acquire()
									return self

							def __exit__(							self:	str    ,						UpperCamelCase_:	int    ,						UpperCamelCase_:	Optional[Any]    ,						UpperCamelCase_:	Optional[Any]							)			->   Any:





									"""simple docstring"""







									self.release()
									return None

							def __del__(							self:	Any							)			->   Union[str, Any]:





									"""simple docstring"""







									self.release(force=UpperCamelCase_							)
									return None


							def       lowerCamelCase_ (							self:	Dict    ,						UpperCamelCase_:	str    ,						UpperCamelCase_:	int							)			->   str:





									"""simple docstring"""







									lowercase__            =      os.path.basename(UpperCamelCase_							)
									if len(UpperCamelCase_							) > max_length and max_length > 0:
											lowercase__            =      os.path.dirname(UpperCamelCase_							)
											lowercase__            =      str(hash(UpperCamelCase_							)							)
											lowercase__            =      filename[: max_length - len(UpperCamelCase_							) - 8] + '''...''' + hashed_filename + '''.lock'''
											return os.path.join(UpperCamelCase_    ,						UpperCamelCase_							)
									else:
											return path


class        _a							(			UpperCamelCase__			):

							def __init__(							self:	Union[str, Any]    ,						UpperCamelCase_:	Optional[int]    ,						UpperCamelCase_:	Tuple=-1    ,						UpperCamelCase_:	List[Any]=None							)			->   Union[str, Any]:





									"""simple docstring"""







									from .file_utils import relative_to_absolute_path

									super().__init__(UpperCamelCase_    ,						timeout=UpperCamelCase_    ,						max_filename_length=UpperCamelCase_							)
									lowercase__            =      '''\\\\?\\''' + relative_to_absolute_path(self.lock_file							)

							def       lowerCamelCase_ (							self:	Dict							)			->   List[str]:





									"""simple docstring"""







									lowercase__            =      os.O_RDWR | os.O_CREAT | os.O_TRUNC

									try:
											lowercase__            =      os.open(self._lock_file    ,						UpperCamelCase_							)
									except OSError:
											pass
									else:
											try:
													msvcrt.locking(UpperCamelCase_    ,						msvcrt.LK_NBLCK    ,						1							)
											except OSError:
													os.close(UpperCamelCase_							)
											else:
													lowercase__            =      fd
									return None


							def       lowerCamelCase_ (							self:	str							)			->   Optional[int]:





									"""simple docstring"""







									lowercase__            =      self._lock_file_fd
									lowercase__            =      None
									msvcrt.locking(UpperCamelCase_    ,						msvcrt.LK_UNLCK    ,						1							)
									os.close(UpperCamelCase_							)

									try:
											os.remove(self._lock_file							)
									# Probably another instance of the application
									# that acquired the file lock.
									except OSError:
											pass
									return None


class        _a							(			UpperCamelCase__			):

							def __init__(							self:	str    ,						UpperCamelCase_:	List[Any]    ,						UpperCamelCase_:	Optional[int]=-1    ,						UpperCamelCase_:	Tuple=None							)			->   str:





									"""simple docstring"""







									lowercase__            =      os.statvfs(os.path.dirname(UpperCamelCase_							)							).f_namemax
									super().__init__(UpperCamelCase_    ,						timeout=UpperCamelCase_    ,						max_filename_length=UpperCamelCase_							)

							def       lowerCamelCase_ (							self:	Optional[Any]							)			->   Optional[int]:





									"""simple docstring"""







									lowercase__            =      os.O_RDWR | os.O_CREAT | os.O_TRUNC
									lowercase__            =      os.open(self._lock_file    ,						UpperCamelCase_							)

									try:
											fcntl.flock(UpperCamelCase_    ,						fcntl.LOCK_EX | fcntl.LOCK_NB							)
									except OSError:
											os.close(UpperCamelCase_							)
									else:
											lowercase__            =      fd
									return None


							def       lowerCamelCase_ (							self:	Optional[Any]							)			->   Any:





									"""simple docstring"""







									lowercase__            =      self._lock_file_fd
									lowercase__            =      None
									fcntl.flock(UpperCamelCase_    ,						fcntl.LOCK_UN							)
									os.close(UpperCamelCase_							)
									return None


class        _a							(			UpperCamelCase__			):

							def       lowerCamelCase_ (							self:	Union[str, Any]							)			->   Optional[int]:





									"""simple docstring"""







									lowercase__            =      os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_TRUNC
									try:
											lowercase__            =      os.open(self._lock_file    ,						UpperCamelCase_							)
									except OSError:
											pass
									else:
											lowercase__            =      fd
									return None


							def       lowerCamelCase_ (							self:	List[Any]							)			->   str:





									"""simple docstring"""







									os.close(self._lock_file_fd							)
									lowercase__            =      None

									try:
											os.remove(self._lock_file							)
									# The file is already deleted and that's what we want.
									except OSError:
											pass
									return None
lowerCAmelCase       =							None

if msvcrt:
			lowerCAmelCase       =							WindowsFileLock
elif fcntl:
			lowerCAmelCase       =							UnixFileLock
else:
			lowerCAmelCase       =							SoftFileLock

			if warnings is not None:
						warnings.warn('only soft file lock is available')






import socket
def 			_a (      ):


		"""simple docstring"""




		lowercase__            =      socket.socket(socket.AF_INET						,				socket.SOCK_STREAM     )
		lowercase__            =      socket.gethostname()
		lowercase__            =      1_23_12

		sock.connect((host, port)     )
		sock.send(B'''Hello server!'''     )

		with open('''Received_file'''						,				'''wb'''     ) as out_file:
				print('''File opened'''     )
				print('''Receiving data...'''     )
				while True:
						lowercase__            =      sock.recv(10_24     )
						if not data:
								break
						out_file.write(SCREAMING_SNAKE_CASE     )

		print('''Successfully received the file'''     )
		sock.close()
		print('''Connection closed'''     )


if __name__ == "__main__":
			main()


