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U
    Ê—Re&  ã                   @   sp   d dl Z d dlZd dlmZmZ ee dœdd„Zee dœdd„Zee dœdd	„Zeeef dœd
d„Z	dS )é    N)ÚOptionalÚTuple)Úreturnc                   C   s   t ƒ p
tƒ S )z9Returns glibc version string, or None if not using glibc.)Úglibc_version_string_confstrÚglibc_version_string_ctypes© r   r   úˆ/builddir/build/BUILDROOT/alt-python38-pip-22.2.1-2.el8.x86_64/opt/alt/python38/lib/python3.8/site-packages/pip/_internal/utils/glibc.pyÚglibc_version_string	   s    r	   c               
   C   sF   t jdkrdS zt d¡ ¡ \} }W n tttfk
r@   Y dS X |S )z@Primary implementation of glibc_version_string using os.confstr.Úwin32NÚCS_GNU_LIBC_VERSION)ÚsysÚplatformÚosÚconfstrÚsplitÚAttributeErrorÚOSErrorÚ
ValueError)Ú_Úversionr   r   r   r      s    
r   c                  C   sv   zddl } W n tk
r"   Y dS X |  d¡}z
|j}W n tk
rN   Y dS X | j|_|ƒ }t|tƒsr| 	d¡}|S )z=Fallback implementation of glibc_version_string using ctypes.r   NÚascii)
ÚctypesÚImportErrorÚCDLLÚgnu_get_libc_versionr   Úc_char_pÚrestypeÚ
isinstanceÚstrÚdecode)r   Úprocess_namespacer   Úversion_strr   r   r   r      s    



r   c                  C   s   t ƒ } | dkrdS d| fS dS )z“Try to determine the glibc version

    Returns a tuple of strings (lib, version) which default to empty strings
    in case the lookup fails.
    N)Ú r"   Úglibc)r	   )Úglibc_versionr   r   r   Úlibc_verN   s    r%   )
r   r   Útypingr   r   r   r	   r   r   r%   r   r   r   r   Ú<module>   s   /