U
    pd                     @   s   d Z ddlZejdkredddlZddlZddlZddlZddlZddl	Z	ddl
Z
dZdZejZejZe Zdded	d
dZG dd dZG dd dejZdS )z)Various Windows specific bits and pieces.    NZwin32z
win32 only)pipePopenPIPE
PipeHandlei    F)TT)duplex
overlappedbufsizec              
   C   s$  t jdt ttd}| r>tj}tj	tj
B }|| }}ntj}tj
}d| }}|tjO }|d rp|tjO }|d rtj}nd}d }	}
z\t||tjd||tjtj}	t||dtjtj|tj}
tj|	dd}|d |	|
fW S    |	dk	rt|	 |
dk	rt|
  Y nX dS )zELike os.pipe() but with overlapped support and using handles not fds.z\\.\pipe\python-pipe-{:d}-{:d}-)prefixr      NTr   )tempfileZmktempformatosgetpidnext_mmap_counter_winapiZPIPE_ACCESS_DUPLEXZGENERIC_READZGENERIC_WRITEZPIPE_ACCESS_INBOUNDZFILE_FLAG_FIRST_PIPE_INSTANCEZFILE_FLAG_OVERLAPPEDZCreateNamedPipeZ	PIPE_WAITZNMPWAIT_WAIT_FOREVERZNULLZ
CreateFileZOPEN_EXISTINGZConnectNamedPipeZGetOverlappedResultCloseHandle)r   r   r   ZaddressZopenmodeaccessZobsizeZibsizeZflags_and_attribsZh1Zh2Zov r   +/usr/lib/python3.8/asyncio/windows_utils.pyr       sb     


           





r   c                   @   sb   e Zd ZdZdd Zdd Zedd Zdd	 Ze	j
d
ddZejfddZdd Zdd ZdS )r   zWrapper for an overlapped pipe handle which is vaguely file-object like.

    The IOCP event loop can use these instead of socket objects.
    c                 C   s
   || _ d S N_handleselfhandler   r   r   __init__V   s    zPipeHandle.__init__c                 C   s2   | j d k	rd| j }nd}d| jj d| dS )Nzhandle=closed< >)r   	__class____name__r   r   r   r   __repr__Y   s    
zPipeHandle.__repr__c                 C   s   | j S r   r   r   r   r   r   r   `   s    zPipeHandle.handlec                 C   s   | j d krtd| j S )NzI/O operation on closed pipe)r   
ValueErrorr%   r   r   r   filenod   s    
zPipeHandle.fileno)r   c                C   s   | j d k	r|| j  d | _ d S r   r   )r   r   r   r   r   closei   s    

zPipeHandle.closec                 C   s*   | j d k	r&|d| t| d |   d S )Nz	unclosed )source)r   ResourceWarningr(   )r   Z_warnr   r   r   __del__n   s    
zPipeHandle.__del__c                 C   s   | S r   r   r%   r   r   r   	__enter__s   s    zPipeHandle.__enter__c                 C   s   |    d S r   )r(   )r   tvtbr   r   r   __exit__v   s    zPipeHandle.__exit__N)r#   
__module____qualname____doc__r   r$   propertyr   r'   r   r   r(   warningswarnr+   r,   r0   r   r   r   r   r   Q   s   
r   c                       s"   e Zd ZdZd fdd	Z  ZS )r   zReplacement for subprocess.Popen using overlapped pipe handles.

    The stdin, stdout, stderr are None or instances of PipeHandle.
    Nc              	      s  | drt| dddks"td  } }}d  }	 }
}|tkrbtddd\}}	t|tj}n|}|tkrtdd\}
}t|d}n|}|tkrtdd\}}t|d}n|tkr|}n|}zz t
 j|f|||d	| W n0   |	|
|fD ]}|d k	rt| q Y n>X |	d k	r,t|	| _|
d k	r@t|
| _|d k	rTt|| _W 5 |tkrlt	| |tkrt	| |tkrt	| X d S )
NZuniversal_newlinesr   r   )FTT)r   r   )TFr   )stdinstdoutstderr)getAssertionErrorr   r   msvcrtZopen_osfhandler   O_RDONLYSTDOUTr(   superr   r   r   r   r7   r8   r9   )r   argsr7   r8   r9   kwdsZ	stdin_rfdZ
stdout_wfdZ
stderr_wfdZstdin_whZ	stdout_rhZ	stderr_rhZstdin_rhZ	stdout_whZ	stderr_whhr"   r   r   r      sR    










zPopen.__init__)NNN)r#   r1   r2   r3   r   __classcell__r   r   rC   r   r   }   s   r   )r3   sysplatformImportErrorr   	itertoolsr<   r   
subprocessr   r5   __all__ZBUFSIZEr   r>   countr   r   r   r   r   r   r   r   <module>   s$   
1,