


from binascii import hexlify
from hashlib import shaaaa
from os import urandom

# RFC 3526 - More Modular Exponential (MODP) Diffie-Hellman groups for
# Internet Key Exchange (IKE) https://tools.ietf.org/html/rfc3526

__UpperCamelCase       :       Union[str, Any]						       =				{
    # 1536-bit
    5: {
        "prime": int(
            "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
            + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
            + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
            + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
            + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
            + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
            + "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
            + "670C354E4ABC9804F1746C08CA237327FFFFFFFFFFFFFFFF",
            base=16,
        ),
        "generator": 2,
    },
    # 2048-bit
    14: {
        "prime": int(
            "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
            + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
            + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
            + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
            + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
            + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
            + "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
            + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"
            + "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"
            + "DE2BCBF6955817183995497CEA956AE515D2261898FA0510"
            + "15728E5A8AACAA68FFFFFFFFFFFFFFFF",
            base=16,
        ),
        "generator": 2,
    },
    # 3072-bit
    15: {
        "prime": int(
            "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
            + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
            + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
            + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
            + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
            + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
            + "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
            + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"
            + "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"
            + "DE2BCBF6955817183995497CEA956AE515D2261898FA0510"
            + "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64"
            + "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7"
            + "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B"
            + "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C"
            + "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31"
            + "43DB5BFCE0FD108E4B82D120A93AD2CAFFFFFFFFFFFFFFFF",
            base=16,
        ),
        "generator": 2,
    },
    # 4096-bit
    16: {
        "prime": int(
            "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
            + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
            + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
            + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
            + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
            + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
            + "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
            + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"
            + "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"
            + "DE2BCBF6955817183995497CEA956AE515D2261898FA0510"
            + "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64"
            + "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7"
            + "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B"
            + "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C"
            + "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31"
            + "43DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7"
            + "88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA"
            + "2583E9CA2AD44CE8DBBBC2DB04DE8EF92E8EFC141FBECAA6"
            + "287C59474E6BC05D99B2964FA090C3A2233BA186515BE7ED"
            + "1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9"
            + "93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934063199"
            + "FFFFFFFFFFFFFFFF",
            base=16,
        ),
        "generator": 2,
    },
    # 6144-bit
    17: {
        "prime": int(
            "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E08"
            + "8A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B"
            + "302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9"
            + "A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE6"
            + "49286651ECE45B3DC2007CB8A163BF0598DA48361C55D39A69163FA8"
            + "FD24CF5F83655D23DCA3AD961C62F356208552BB9ED529077096966D"
            + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3BE39E772C"
            + "180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718"
            + "3995497CEA956AE515D2261898FA051015728E5A8AAAC42DAD33170D"
            + "04507A33A85521ABDF1CBA64ECFB850458DBEF0A8AEA71575D060C7D"
            + "B3970F85A6E1E4C7ABF5AE8CDB0933D71E8C94E04A25619DCEE3D226"
            + "1AD2EE6BF12FFA06D98A0864D87602733EC86A64521F2B18177B200C"
            + "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB3143DB5BFC"
            + "E0FD108E4B82D120A92108011A723C12A787E6D788719A10BDBA5B26"
            + "99C327186AF4E23C1A946834B6150BDA2583E9CA2AD44CE8DBBBC2DB"
            + "04DE8EF92E8EFC141FBECAA6287C59474E6BC05D99B2964FA090C3A2"
            + "233BA186515BE7ED1F612970CEE2D7AFB81BDD762170481CD0069127"
            + "D5B05AA993B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934028492"
            + "36C3FAB4D27C7026C1D4DCB2602646DEC9751E763DBA37BDF8FF9406"
            + "AD9E530EE5DB382F413001AEB06A53ED9027D831179727B0865A8918"
            + "DA3EDBEBCF9B14ED44CE6CBACED4BB1BDB7F1447E6CC254B33205151"
            + "2BD7AF426FB8F401378CD2BF5983CA01C64B92ECF032EA15D1721D03"
            + "F482D7CE6E74FEF6D55E702F46980C82B5A84031900B1C9E59E7C97F"
            + "BEC7E8F323A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA"
            + "CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE32806A1D58B"
            + "B7C5DA76F550AA3D8A1FBFF0EB19CCB1A313D55CDA56C9EC2EF29632"
            + "387FE8D76E3C0468043E8F663F4860EE12BF2D5B0B7474D6E694F91E"
            + "6DCC4024FFFFFFFFFFFFFFFF",
            base=16,
        ),
        "generator": 2,
    },
    # 8192-bit
    18: {
        "prime": int(
            "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1"
            + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD"
            + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245"
            + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED"
            + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D"
            + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F"
            + "83655D23DCA3AD961C62F356208552BB9ED529077096966D"
            + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B"
            + "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9"
            + "DE2BCBF6955817183995497CEA956AE515D2261898FA0510"
            + "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64"
            + "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7"
            + "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B"
            + "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C"
            + "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31"
            + "43DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7"
            + "88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA"
            + "2583E9CA2AD44CE8DBBBC2DB04DE8EF92E8EFC141FBECAA6"
            + "287C59474E6BC05D99B2964FA090C3A2233BA186515BE7ED"
            + "1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9"
            + "93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934028492"
            + "36C3FAB4D27C7026C1D4DCB2602646DEC9751E763DBA37BD"
            + "F8FF9406AD9E530EE5DB382F413001AEB06A53ED9027D831"
            + "179727B0865A8918DA3EDBEBCF9B14ED44CE6CBACED4BB1B"
            + "DB7F1447E6CC254B332051512BD7AF426FB8F401378CD2BF"
            + "5983CA01C64B92ECF032EA15D1721D03F482D7CE6E74FEF6"
            + "D55E702F46980C82B5A84031900B1C9E59E7C97FBEC7E8F3"
            + "23A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA"
            + "CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE328"
            + "06A1D58BB7C5DA76F550AA3D8A1FBFF0EB19CCB1A313D55C"
            + "DA56C9EC2EF29632387FE8D76E3C0468043E8F663F4860EE"
            + "12BF2D5B0B7474D6E694F91E6DBE115974A3926F12FEE5E4"
            + "38777CB6A932DF8CD8BEC4D073B931BA3BC832B68D9DD300"
            + "741FA7BF8AFC47ED2576F6936BA424663AAB639C5AE4F568"
            + "3423B4742BF1C978238F16CBE39D652DE3FDB8BEFC848AD9"
            + "22222E04A4037C0713EB57A81A23F0C73473FC646CEA306B"
            + "4BCBC8862F8385DDFA9D4B7FA2C087E879683303ED5BDD3A"
            + "062B3CF5B3A278A66D2A13F83F44F82DDF310EE074AB6A36"
            + "4597E899A0255DC164F31CC50846851DF9AB48195DED7EA1"
            + "B1D510BD7EE74D73FAF36BC31ECFA268359046F4EB879F92"
            + "4009438B481C6CD7889A002ED5EE382BC9190DA6FC026E47"
            + "9558E4475677E9AA9E3050E2765694DFC81F56E880B96E71"
            + "60C980DD98EDD3DFFFFFFFFFFFFFFFFF",
            base=16,
        ),
        "generator": 2,
    },
}

class       __magic_name__	:


     def __init__(      self							:     List[str]							,	lowerCamelCase__							:     int = 14			)  ->      None:





      '''simple docstring'''






      if group not in primes:
       raise ValueError('''Unsupported Group'''			)
      UpperCamelCase__					:    int          =   primes[group]['''prime''']
      UpperCamelCase__					:    Any          =   primes[group]['''generator''']

      UpperCamelCase__					:    str          =   int(hexlify(urandom(32			)			)							,	base=16			)


     def      UpperCAmelCase__	(      self							:     Any			)  ->      str:





      '''simple docstring'''






      return hex(self.__private_key			)[2:]


     def      UpperCAmelCase__	(      self							:     int			)  ->      str:





      '''simple docstring'''






      UpperCamelCase__					:    List[Any]          =   pow(self.generator							,	self.__private_key							,	self.prime			)
      return hex(lowerCamelCase__			)[2:]


     def      UpperCAmelCase__	(      self							:     Any							,	lowerCamelCase__							:     int			)  ->      bool:





      '''simple docstring'''






      return (
          2 <= key <= self.prime - 2
          and pow(lowerCamelCase__							,	(self.prime - 1) // 2							,	self.prime			) == 1
      )


     def      UpperCAmelCase__	(      self							:     Any							,	lowerCamelCase__							:     str			)  ->      str:





      '''simple docstring'''






      UpperCamelCase__					:    int          =   int(lowerCamelCase__							,	base=16			)
      if not self.is_valid_public_key(lowerCamelCase__			):
       raise ValueError('''Invalid public key'''			)
      UpperCamelCase__					:    str          =   pow(lowerCamelCase__							,	self.__private_key							,	self.prime			)
      return shaaaa(str(lowerCamelCase__			).encode()			).hexdigest()


     @staticmethod
     def      UpperCAmelCase__	(      lowerCamelCase__							:     int							,	lowerCamelCase__							:     int			)  ->      bool:





      '''simple docstring'''






      return (
          2 <= remote_public_key_str <= prime - 2
          and pow(lowerCamelCase__							,	(prime - 1) // 2							,	lowerCamelCase__			) == 1
      )


     @staticmethod
     def      UpperCAmelCase__	(      lowerCamelCase__							:     str							,	lowerCamelCase__							:     str							,	lowerCamelCase__							:     int = 14			)  ->      str:





      '''simple docstring'''






      UpperCamelCase__					:    int          =   int(lowerCamelCase__							,	base=16			)
      UpperCamelCase__					:    str          =   int(lowerCamelCase__							,	base=16			)
      UpperCamelCase__					:    Optional[int]          =   primes[group]['''prime''']
      if not DiffieHellman.is_valid_public_key_static(lowerCamelCase__							,	lowerCamelCase__			):
       raise ValueError('''Invalid public key'''			)
      UpperCamelCase__					:    List[Any]          =   pow(lowerCamelCase__							,	lowerCamelCase__							,	lowerCamelCase__			)
      return shaaaa(str(lowerCamelCase__			).encode()			).hexdigest()


if __name__ == "__main__":
       import doctest

       doctest.testmod()






import logging
import os
import threading
import time


try:
       import warnings
except ImportError:
       __UpperCamelCase       :       Any						       =				None

try:
       import msvcrt
except ImportError:
       __UpperCamelCase       :       Optional[Any]						       =				None

try:
       import fcntl
except ImportError:
       __UpperCamelCase       :       Union[str, Any]						       =				None


# Backward compatibility
# ------------------------------------------------
try:
       TimeoutError
except NameError:
       __UpperCamelCase       :       Any						       =				OSError


# Data
# ------------------------------------------------
__UpperCamelCase       :       Optional[int]						       =				[
    "Timeout",
    "BaseFileLock",
    "WindowsFileLock",
    "UnixFileLock",
    "SoftFileLock",
    "FileLock",
]

__UpperCamelCase       :       Dict						       =				"3.0.12"


__UpperCamelCase       :       str						       =				None

def 			_a  (				):







 """simple docstring"""



 global _logger
 UpperCamelCase__					:    Tuple          =   _logger or logging.getLogger(__name__     )
 return _logger

class       __magic_name__	(     __lowerCAmelCase):


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





      '''simple docstring'''






      UpperCamelCase__					:    List[str]          =   lock_file
      return None


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





      '''simple docstring'''






      UpperCamelCase__					:    Tuple          =   F"The file lock '{self.lock_file}' could not be acquired."
      return temp



class       __magic_name__	:


     def __init__(      self							:     List[str]							,	lowerCamelCase__							:     Dict			)  ->      Optional[int]:





      '''simple docstring'''






      UpperCamelCase__					:    Optional[int]          =   lock
      return None


     def __enter__(      self							:     Tuple			)  ->      str:





      '''simple docstring'''






      return self.lock


     def __exit__(      self							:     Any							,	lowerCamelCase__							:     List[Any]							,	lowerCamelCase__							:     Dict							,	lowerCamelCase__							:     str			)  ->      Any:





      '''simple docstring'''






      self.lock.release()
      return None



class       __magic_name__	:


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





      '''simple docstring'''






      UpperCamelCase__					:    int          =   max_filename_length if max_filename_length is not None else 255
      # Hash the filename if it's too long
      UpperCamelCase__					:    List[Any]          =   self.hash_filename_if_too_long(lowerCamelCase__							,	lowerCamelCase__			)
      # The path to the lock file.
      UpperCamelCase__					:    Tuple          =   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.
      UpperCamelCase__					:    int          =   None

      # The default timeout value.
      UpperCamelCase__					:    Optional[Any]          =   timeout

      # We use this lock primarily for the lock counter.
      UpperCamelCase__					:    List[Any]          =   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.
      UpperCamelCase__					:    Any          =   0
      return None


     @property
     def      UpperCAmelCase__	(      self							:     Any			)  ->      Optional[int]:





      '''simple docstring'''






      return self._lock_file


     @property
     def      UpperCAmelCase__	(      self							:     Optional[int]			)  ->      Optional[int]:





      '''simple docstring'''






      return self._timeout


     @timeout.setter
     def      UpperCAmelCase__	(      self							:     List[Any]							,	lowerCamelCase__							:     Any			)  ->      List[str]:





      '''simple docstring'''






      UpperCamelCase__					:    List[str]          =   float(lowerCamelCase__			)
      return None


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





      '''simple docstring'''






      raise NotImplementedError()


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





      '''simple docstring'''






      raise NotImplementedError()


     @property
     def      UpperCAmelCase__	(      self							:     Any			)  ->      Dict:





      '''simple docstring'''






      return self._lock_file_fd is not None


     def      UpperCAmelCase__	(      self							:     Tuple							,	lowerCamelCase__							:     Optional[Any]=None							,	lowerCamelCase__							:     List[str]=0.05			)  ->      int:





      '''simple docstring'''






      if timeout is None:
       UpperCamelCase__					:    int          =   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

      UpperCamelCase__					:    int          =   id(self			)
      UpperCamelCase__					:    List[Any]          =   self._lock_file
      UpperCamelCase__					:    Dict          =   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(lowerCamelCase__			)
      except:  # noqa
       # Something did go wrong, so decrement the counter.
       with self._thread_lock:
        UpperCamelCase__					:    List[Any]          =   max(0							,	self._lock_counter - 1			)

       raise
      return _Acquire_ReturnProxy(lock=self			)


     def      UpperCAmelCase__	(      self							:     Optional[int]							,	lowerCamelCase__							:     Optional[int]=False			)  ->      Any:





      '''simple docstring'''






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

        if self._lock_counter == 0 or force:
         UpperCamelCase__					:    List[str]          =   id(self			)
         UpperCamelCase__					:    Union[str, Any]          =   self._lock_file

         logger().debug(F"Attempting to release lock {lock_id} on {lock_filename}"			)
         self._release()
         UpperCamelCase__					:    Optional[Any]          =   0
         logger().debug(F"Lock {lock_id} released on {lock_filename}"			)

      return None


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





      '''simple docstring'''






      self.acquire()
      return self


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





      '''simple docstring'''






      self.release()
      return None


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





      '''simple docstring'''






      self.release(force=lowerCamelCase__			)
      return None


     def      UpperCAmelCase__	(      self							:     Optional[int]							,	lowerCamelCase__							:     str							,	lowerCamelCase__							:     int			)  ->      str:





      '''simple docstring'''






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



class       __magic_name__	(     __lowerCAmelCase):


     def __init__(      self							:     int							,	lowerCamelCase__							:     Dict							,	lowerCamelCase__							:     str=-1							,	lowerCamelCase__							:     int=None			)  ->      Optional[int]:





      '''simple docstring'''






      from .file_utils import relative_to_absolute_path

      super().__init__(lowerCamelCase__							,	timeout=lowerCamelCase__							,	max_filename_length=lowerCamelCase__			)
      UpperCamelCase__					:    int          =   '''\\\\?\\''' + relative_to_absolute_path(self.lock_file			)


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





      '''simple docstring'''






      UpperCamelCase__					:    List[Any]          =   os.O_RDWR | os.O_CREAT | os.O_TRUNC

      try:
       UpperCamelCase__					:    Union[str, Any]          =   os.open(self._lock_file							,	lowerCamelCase__			)
      except OSError:
       pass
      else:
       try:
        msvcrt.locking(lowerCamelCase__							,	msvcrt.LK_NBLCK							,	1			)
       except OSError:
        os.close(lowerCamelCase__			)
       else:
        UpperCamelCase__					:    Union[str, Any]          =   fd
      return None


     def      UpperCAmelCase__	(      self							:     Tuple			)  ->      Optional[Any]:





      '''simple docstring'''






      UpperCamelCase__					:    str          =   self._lock_file_fd
      UpperCamelCase__					:    List[str]          =   None
      msvcrt.locking(lowerCamelCase__							,	msvcrt.LK_UNLCK							,	1			)
      os.close(lowerCamelCase__			)

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



class       __magic_name__	(     __lowerCAmelCase):


     def __init__(      self							:     Any							,	lowerCamelCase__							:     int							,	lowerCamelCase__							:     str=-1							,	lowerCamelCase__							:     int=None			)  ->      Tuple:





      '''simple docstring'''






      UpperCamelCase__					:    Union[str, Any]          =   os.statvfs(os.path.dirname(lowerCamelCase__			)			).f_namemax
      super().__init__(lowerCamelCase__							,	timeout=lowerCamelCase__							,	max_filename_length=lowerCamelCase__			)


     def      UpperCAmelCase__	(      self							:     int			)  ->      Optional[int]:





      '''simple docstring'''






      UpperCamelCase__					:    List[str]          =   os.O_RDWR | os.O_CREAT | os.O_TRUNC
      UpperCamelCase__					:    int          =   os.open(self._lock_file							,	lowerCamelCase__			)

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


     def      UpperCAmelCase__	(      self							:     int			)  ->      Any:





      '''simple docstring'''






      UpperCamelCase__					:    Tuple          =   self._lock_file_fd
      UpperCamelCase__					:    int          =   None
      fcntl.flock(lowerCamelCase__							,	fcntl.LOCK_UN			)
      os.close(lowerCamelCase__			)
      return None



class       __magic_name__	(     __lowerCAmelCase):


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





      '''simple docstring'''






      UpperCamelCase__					:    str          =   os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_TRUNC
      try:
       UpperCamelCase__					:    Any          =   os.open(self._lock_file							,	lowerCamelCase__			)
      except OSError:
       pass
      else:
       UpperCamelCase__					:    Optional[Any]          =   fd
      return None


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





      '''simple docstring'''






      os.close(self._lock_file_fd			)
      UpperCamelCase__					:    List[str]          =   None

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



__UpperCamelCase       :       Tuple						       =				None

if msvcrt:
       __UpperCamelCase       :       str						       =				WindowsFileLock
elif fcntl:
       __UpperCamelCase       :       Optional[Any]						       =				UnixFileLock
else:
       __UpperCamelCase       :       Optional[Any]						       =				SoftFileLock

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


