B
    od              	   @   s(  d dl Z d dlZd dlZd dlZd dlmZmZmZmZm	Z	 d dl
mZ ddlmZmZmZmZmZ ervd dlmZ neZddd	d
dddddg	ZedddZG dd deZejddedddZedddZeee  edddZeedddZeeedddZeeeedd d!Z dS )"    N)TYPE_CHECKINGListOptionalTypecast)	strtobool   )BaseDistributionBaseEnvironmentFilesystemWheelMemoryWheelWheel)Protocolr	   r
   r   r   r   get_default_environmentget_environmentget_wheel_distributionselect_backend)returnc           	   C   sN   t tt tttjd S Q R X tj	dk r4dS ddl
} tt| jddS )a  Whether to use the ``importlib.metadata`` or ``pkg_resources`` backend.

    By default, pip uses ``importlib.metadata`` on Python 3.11+, and
    ``pkg_resourcess`` otherwise. This can be overridden by a couple of ways:

    * If environment variable ``_PIP_USE_IMPORTLIB_METADATA`` is set, it
      dictates whether ``importlib.metadata`` is used, regardless of Python
      version.
    * On Python 3.11+, Python distributors can patch ``importlib.metadata``
      to add a global constant ``_PIP_USE_IMPORTLIB_METADATA = False``. This
      makes pip use ``pkg_resources`` (unless the user set the aforementioned
      environment variable to *True*).
    _PIP_USE_IMPORTLIB_METADATAN)      Fr   T)
contextlibsuppressKeyError
ValueErrorboolr   osenvironsysversion_infoimportlib.metadatagetattrmetadata)	importlib r$   Q/var/www/html/venv/lib/python3.7/site-packages/pip/_internal/metadata/__init__.py_should_use_importlib_metadata   s    
r&   c               @   s&   e Zd ZU ee ed< ee ed< dS )BackendDistributionEnvironmentN)__name__
__module____qualname__r   r	   __annotations__r
   r$   r$   r$   r%   r'   4   s   
r'   )maxsizec              C   s2   t  rddlm}  tt| S ddlm} tt|S )Nr   )r#   )pkg_resources)r&    r#   r   r'   r/   )r#   r/   r$   r$   r%   r   9   s
    
c               C   s   t  j S )a	  Get the default representation for the current environment.

    This returns an Environment instance from the chosen backend. The default
    Environment instance should be built from ``sys.path`` and may use caching
    to share instance state accorss calls.
    )r   r)   defaultr$   r$   r$   r%   r   D   s    )pathsr   c             C   s   t  j| S )a'  Get a representation of the environment specified by ``paths``.

    This returns an Environment instance from the chosen backend based on the
    given import paths. The backend must build a fresh instance representing
    the state of installed distributions when this function is called.
    )r   r)   
from_paths)r2   r$   r$   r%   r   N   s    )	directoryr   c             C   s   t  j| S )zGet the distribution metadata representation in the specified directory.

    This returns a Distribution instance from the chosen backend based on
    the given on-disk ``.dist-info`` directory.
    )r   r(   from_directory)r4   r$   r$   r%   get_directory_distributionX   s    r6   )wheelcanonical_namer   c             C   s   t  j| |S )a  Get the representation of the specified wheel's distribution metadata.

    This returns a Distribution instance from the chosen backend based on
    the given wheel's ``.dist-info`` directory.

    :param canonical_name: Normalized project name of the given wheel.
    )r   r(   
from_wheel)r7   r8   r$   r$   r%   r   a   s    )metadata_contentsfilenamer8   r   c             C   s   t  j| ||S )a  Get the dist representation of the specified METADATA file contents.

    This returns a Distribution instance from the chosen backend sourced from the data
    in `metadata_contents`.

    :param metadata_contents: Contents of a METADATA file within a dist, or one served
                              via PEP 658.
    :param filename: Filename for the dist this metadata represents.
    :param canonical_name: Normalized project name of the given dist.
    )r   r(   from_metadata_file_contents)r:   r;   r8   r$   r$   r%   get_metadata_distributionl   s    r=   )!r   	functoolsr   r   typingr   r   r   r   r   pip._internal.utils.miscr   baser	   r
   r   r   r   r   object__all__r   r&   r'   	lru_cacher   r   strr   r6   r   bytesr=   r$   r$   r$   r%   <module>   s<   



	