a
    sÀhŽ  ã                   @  sX   d dl mZ d dlZd dlZddœdd„Zddœdd„Zddœd	d
„Zddœdd„ZdS )é    )ÚannotationsNz
str | None)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   úU/var/www/html/assistant/venv/lib/python3.9/site-packages/pip/_internal/utils/glibc.pyÚglibc_version_string   s    r   c               
   C  sV   t jdkrdS z(t d¡} | du r(W dS |  ¡ \}}W n tttfyP   Y dS 0 |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)Zgnu_libc_versionÚ_Úversionr   r   r   r      s    

r   c                  C  sŒ   zddl } W n ty    Y dS 0 z|  d¡}W n tyD   Y dS 0 z
|j}W n tyd   Y dS 0 | j|_|ƒ }t|t	ƒsˆ| 
d¡}|S )z=Fallback implementation of glibc_version_string using ctypes.r   NÚascii)ÚctypesÚImportErrorÚCDLLr   Úgnu_get_libc_versionr   Úc_char_pÚrestypeÚ
isinstanceÚstrÚdecode)r   Úprocess_namespacer   Úversion_strr   r   r   r       s"    


r   ztuple[str, str]c                  C  s   t ƒ } | du 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_ver\   s    r$   )Ú
__future__r   r   r   r   r   r   r$   r   r   r   r   Ú<module>   s   <