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    §¢Èaå  ã               @  s˜   d dl mZ d dlZd dlZd dlmZ d dlmZ d dlm	Z	 ddl
mZ ddlmZ ejd	kr|d dlZG d
d„ deƒZnG dd„ deeƒZdgZdS )é    )ÚannotationsN)ÚABC)ÚENOENT)Úcasté   )ÚBaseFileLock)Úraise_on_exist_ro_fileÚwin32c               @  s,   e Zd ZdZddœdd„Zddœdd„ZdS )	ÚWindowsFileLockzWUses the :func:`msvcrt.locking` function to hard lock the lock file on windows systems.ÚNone)Úreturnc          
   C  sœ   t | jƒ tjtjB tjB }yt | j|¡}W n. tk
r\ } z|jt	krL‚ W d d }~X Y n<X yt
 |t
jd¡ W n tk
r   t |¡ Y nX || _d S )Nr   )r   Ú
_lock_fileÚosÚO_RDWRÚO_CREATÚO_TRUNCÚopenÚOSErrorÚerrnor   ÚmsvcrtÚlockingZLK_NBLCKÚcloseÚ_lock_file_fd)ÚselfÚmodeÚfdÚ	exception© r   úB/opt/alt/python37/lib/python3.7/site-packages/filelock/_windows.pyÚ_acquire   s    

zWindowsFileLock._acquirec             C  sV   t t| jƒ}d | _t |tjd¡ t |¡ yt | j	¡ W n t
k
rP   Y nX d S )Nr   )r   Úintr   r   r   ZLK_UNLCKr   r   Úremover   r   )r   r   r   r   r   Ú_release&   s    
zWindowsFileLock._releaseN)Ú__name__Ú
__module__Ú__qualname__Ú__doc__r   r"   r   r   r   r   r
      s   r
   c               @  s   e Zd ZdZdS )r
   zWUses the :func:`msvcrt.locking` function to hard lock the lock file on windows systems.N)r#   r$   r%   r&   r   r   r   r   r
   4   s   )Ú
__future__r   r   ÚsysÚabcr   r   r   Útypingr   Z_apir   Z_utilr   Úplatformr   r
   Ú__all__r   r   r   r   Ú<module>   s   
%