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B
    š•Reá  ã               @   s`   d dl mZ d dlZd dlZd dlmZ er<d dlmZmZ dd„ Z	dd„ Z
d	d
„ Zdd„ ZdS )é    )Úabsolute_importN)ÚMYPY_CHECK_RUNNING)ÚOptionalÚTuplec               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-python37-pip-20.2.4-6.el8.x86_64/opt/alt/python37/lib/python3.7/site-packages/pip/_internal/utils/glibc.pyÚglibc_version_string   s    r
   c           
   C   sD   t jdkrdS yt d¡ ¡ \} }W n tttfk
r>   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   sr   yddl } W n tk
r    dS X |  d¡}y
|j}W n tk
rJ   dS X | j|_|ƒ }t|tƒsn| 	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_verW   s    r&   )Ú
__future__r   r   r   Úpip._internal.utils.typingr   Útypingr   r   r
   r   r   r&   r   r   r   r	   Ú<module>   s   0