OwlCyberSecurity - MANAGER
Edit File: cache.cpython-38.pyc
U ��.e� � @ s� d Z ddlZddlZddlZddlZddlmZ ddlmZ ddl m Z ddl m Z ddl mZ ddlmZ dd lmZmZ er�dd lmZmZmZmZ dd lmZ dd lm Z e� e �Z G d d� de �Z!G dd� de!�Z"G dd� de"�Z#G dd� de!�Z$dS )zCache Management � N)�canonicalize_name)�Link)� expanduser)� TempDirectory)�MYPY_CHECK_RUNNING)� path_to_url)�InvalidWheelFilename�Wheel)�Optional�Set�List�Any)� FormatControl)� Pep425Tagc sP e Zd ZdZ� fdd�Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z � Z S )�Cachea� An abstract class - provides cache directories for data from links :param cache_dir: The root of the cache. :param format_control: An object of FormatControl class to limit binaries being read from the cache. :param allowed_formats: which formats of files the cache should store. ('binary' and 'source' are the only allowed values) c sL t t| ��� |rt|�nd | _|| _|| _ddh}| j�|�|ksHt�d S )N�source�binary) �superr �__init__r � cache_dir�format_control�allowed_formats�union�AssertionError)�selfr r r Z_valid_formats�� __class__� �7/usr/lib/python3.8/site-packages/pip/_internal/cache.pyr ( s zCache.__init__c C s� |j g}|jdk r4|jdk r4|�d�|j|jg�� d�|�}t�|�� ��� }|dd� |dd� |dd� |dd� g}|S )zEGet parts of part that must be os.path.joined with cache_dir N�=�#� � � ) Zurl_without_fragmentZ hash_name�hash�append�join�hashlibZsha224�encodeZ hexdigest)r �linkZ key_partsZkey_urlZhashed�partsr r r �_get_cache_path_parts2 s ,zCache._get_cache_path_partsc C s� | j p| p| }|r g S t|�}| j�|�}| j�|�s@g S | �|�}z t�|�W S t k r� } z$|j t j t j hkr�g W Y �S � W 5 d }~X Y nX d S �N) r r r Zget_allowed_formatsr � intersection�get_path_for_link�os�listdir�OSError�errnoZENOENTZENOTDIR)r r) � package_nameZ can_not_cacheZcanonical_nameZformats�root�errr r r �_get_candidatesL s( ��� zCache._get_candidatesc C s t � �dS )z>Return a directory to store cached items in for link. N��NotImplementedError�r r) r r r r. e s zCache.get_path_for_linkc C s t � �dS )zaReturns a link to a cached item if it exists, otherwise returns the passed link. Nr7 )r r) r3 �supported_tagsr r r �getk s z Cache.getc C s$ | � |�}tj�||�}tt|��S r, )r. r/ �pathr& r r )r r) � candidater4 r< r r r �_link_for_candidatew s zCache._link_for_candidatec C s d S r, r �r r r r �cleanup~ s z Cache.cleanup) �__name__� __module__� __qualname__�__doc__r r+ r6 r. r; r> r@ � __classcell__r r r r r s r c s0 e Zd ZdZ� fdd�Zdd� Zdd� Z� ZS )�SimpleWheelCachez+A cache of wheels for future installs. c s t t| ��||dh� d S �Nr )r rF r �r r r r r r r � s �zSimpleWheelCache.__init__c C s | � |�}tjj| jdf|�� S )a� Return a directory to store cached wheels for link Because there are M wheels for any one sdist, we provide a directory to cache them in, and then consult that directory when looking up cache hits. We only insert things into the cache if they have plausible version numbers, so that we don't contaminate the cache with things that were not unique. E.g. ./package might have dozens of installs done for it and build a version of 0.0...and if we built and cached a wheel, we'd end up using the same wheel even if the source has been edited. :param link: The link of the sdist for which this will cache wheels. Zwheels)r+ r/ r< r& r )r r) r* r r r r. � s z"SimpleWheelCache.get_path_for_linkc C sx g }| � ||�D ]J}z t|�}W n tk r8 Y qY nX |�|�sFq|�|�|�|f� q|sd|S | �|t|�d �S )N� )r6 r r Z supportedr% Zsupport_index_minr> �min)r r) r3 r: Z candidatesZ wheel_nameZwheelr r r r; � s �zSimpleWheelCache.get)rA rB rC rD r r. r; rE r r r r rF � s rF c s( e Zd ZdZ� fdd�Zdd� Z� ZS )�EphemWheelCachezGA SimpleWheelCache that creates it's own temporary cache directory c s& t dd�| _tt| ��| jj|� d S )Nzephem-wheel-cache)Zkind)r � _temp_dirr rK r r< )r r r r r r � s �zEphemWheelCache.__init__c C s | j �� d S r, )rL r@ r? r r r r@ � s zEphemWheelCache.cleanup)rA rB rC rD r r@ rE r r r r rK � s rK c s@ e Zd ZdZ� fdd�Zdd� Zdd� Zdd � Zd d � Z� Z S ) � WheelCachez�Wraps EphemWheelCache and SimpleWheelCache into a single Cache This Cache allows for gracefully degradation, using the ephem wheel cache when a certain link is not found in the simple wheel cache first. c s0 t t| ��||dh� t||�| _t|�| _d S rG )r rM r rF � _wheel_cacherK � _ephem_cacherH r r r r � s � zWheelCache.__init__c C s | j �|�S r, )rN r. r9 r r r r. � s z WheelCache.get_path_for_linkc C s | j �|�S r, )rO r. r9 r r r �get_ephem_path_for_link� s z"WheelCache.get_ephem_path_for_linkc C s0 | j j|||d�}||k r |S | jj|||d�S )N)r) r3 r: )rN r; rO )r r) r3 r: Zretvalr r r r; � s ��zWheelCache.getc C s | j �� | j�� d S r, )rN r@ rO r? r r r r@ � s zWheelCache.cleanup) rA rB rC rD r r. rP r; r@ rE r r r r rM � s rM )%rD r2 r' Zloggingr/ Zpip._vendor.packaging.utilsr Zpip._internal.models.linkr Zpip._internal.utils.compatr Z pip._internal.utils.temp_dirr Zpip._internal.utils.typingr Zpip._internal.utils.urlsr Zpip._internal.wheelr r �typingr r r r Zpip._internal.indexr Zpip._internal.pep425tagsr Z getLoggerrA Zlogger�objectr rF rK rM r r r r �<module> s( f: