o
    ðýðc&  ã                   @   sp   d dl Z d dlZd dlmZmZ dee fdd„Zdee fdd„Zdee fdd	„Zdeeef fd
d„Z	dS )é    N)ÚOptionalÚTupleÚ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   úF/opt/certbot/lib/python3.10/site-packages/pip/_internal/utils/glibc.pyÚglibc_version_string	   s   r	   c               
   C   sB   t jdkrdS zt d¡ ¡ \} }W |S  tttfy    Y dS w )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   
ýþr   c                  C   sr   zddl } W n
 ty   Y dS w |  d¡}z|j}W n
 ty%   Y dS w | j|_|ƒ }t|tƒs7| 	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    ÿ

ý

r   c                  C   s   t ƒ } | du r	dS d| f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   /