o
    6a5
                     @   s   d Z ddlZddlZddlZzddlmZ W n ey%   ddlmZ Y nw g dZG dd dZG dd dZ	G d	d
 d
Z
ejdkrHe	ZdS ejdkrQe
ZdS dS )zq
Helper functions for interacting with the shell, and consuming shell-style
parameters provided in config files.
    Nquote)WindowsParserPosixParserNativeParserc                   @   (   e Zd ZdZedd Zedd ZdS )CommandLineParsera  
    An object that knows how to split and join command-line arguments.

    It must be true that ``argv == split(join(argv))`` for all ``argv``.
    The reverse neednt be true - `join(split(cmd))` may result in the addition
    or removal of unnecessary escaping.
    c                 C      t )z5 Join a list of arguments into a command line string NotImplementedErrorargv r   >/usr/lib/python3/dist-packages/numpy/distutils/_shell_utils.pyjoin      zCommandLineParser.joinc                 C   r	   )z6 Split a command line string into a list of arguments r
   cmdr   r   r   split   r   zCommandLineParser.splitN__name__
__module____qualname____doc__staticmethodr   r   r   r   r   r   r      s    
r   c                   @   r   )r   z
    The parsing behavior used by `subprocess.call("string")` on Windows, which
    matches the Microsoft C/C++ runtime.

    Note that this is _not_ the behavior of cmd.
    c                 C   s
   t | S N)
subprocesslist2cmdliner   r   r   r   r   *   s   
zWindowsParser.joinc                    s   dd l }z|j W n	 ty   tw | sg S d|  } |jjj}||j|_|j||j	f|_
|	 }|| ||  fddt|jD }|jj rRJ |d dksZJ |dd  S )Nr   zdummy c                    s   g | ]} | qS r   r   ).0ilpargsr   r   
<listcomp>C   s    z'WindowsParser.split.<locals>.<listcomp>dummy   )ctypeswindllAttributeErrorr   shell32CommandLineToArgvWPOINTER	c_wchar_prestypec_intargtypesbyrefrangevaluekernel32	LocalFree)r   r%   r)   nargsargsr   r    r   r   /   s$   

zWindowsParser.splitNr   r   r   r   r   r   #   s    
r   c                   @   r   )r   zX
    The parsing behavior used by `subprocess.call("string", shell=True)` on Posix.
    c                 C   s   d dd | D S )N c                 s   s    | ]}t |V  qd S r   r   )r   argr   r   r   	<genexpr>Q   s    z#PosixParser.join.<locals>.<genexpr>)r   r   r   r   r   r   O   s   zPosixParser.joinc                 C   s   t j| ddS )NT)posix)shlexr   r   r   r   r   r   S   s   zPosixParser.splitNr   r   r   r   r   r   K   s    
r   ntr9   )r   osr:   r   r   ImportErrorpipes__all__r   r   r   namer   r   r   r   r   <module>   s$    (

