Edit File: hashes.cpython-37.pyc
B �j�cF � @ s� d dl mZ d dlZd dlmZmZmZ d dlmZm Z m Z d dl m Z d dl mZ er�d dlmZmZmZmZmZ d dlmZ er�d d lmZ n d d lmZ d Zd d d gZG dd� de�ZG dd� de�Z dS )� )�absolute_importN)� iteritems�iterkeys� itervalues)� HashMismatch� HashMissing�InstallationError)� read_chunks)�MYPY_CHECK_RUNNING)�Dict�List�BinaryIO�NoReturn�Iterator)�PY3)�_Hash)�_hash�sha256�sha384�sha512c @ sf e Zd ZdZddd�Zdd� Zedd� �Zd d � Zd d � Z d d� Z dd� Z dd� Z dd� Z dd� ZdS )�HasheszaA wrapper that builds multiple hashes at once and checks them against known-good values Nc C s |dkr i n|| _ dS )zo :param hashes: A dict of algorithm names pointing to lists of allowed hex digests N)�_allowed)�self�hashes� r ��/builddir/build/BUILDROOT/alt-python37-pip-20.2.4-5.el8.x86_64/opt/alt/python37/lib/python3.7/site-packages/pip/_internal/utils/hashes.py�__init__) s zHashes.__init__c sf t |t�stS |s�S �s |S i }x:t|j�D ],\� }� �jkrBq.� �fdd�|D �|� < q.W t|�S )Nc s g | ]}|�j � kr|�qS r )r )�.0�v)�algr r r � <listcomp>B s z"Hashes.__and__.<locals>.<listcomp>)� isinstancer �NotImplementedr r )r �other�new�valuesr )r r r �__and__1 s zHashes.__and__c C s t dd� | j�� D ��S )Nc s s | ]}t |�V qd S )N)�len)r �digestsr r r � <genexpr>H s z&Hashes.digest_count.<locals>.<genexpr>)�sumr r% )r r r r � digest_countE s zHashes.digest_countc C s || j �|g �kS )z/Return whether the given hex digest is allowed.)r �get)r � hash_name� hex_digestr r r �is_hash_allowedJ s zHashes.is_hash_allowedc C s� i }xLt | j�D ]>}yt�|�||< W q ttfk rL td�|���Y qX qW x(|D ] }xt|�D ]}|� |� qfW qXW x*t |�D ] \}}|� � | j| kr�dS q�W | � |� dS )z�Check good hashes against ones built from iterable of chunks of data. Raise HashMismatch if none match. zUnknown hash name: {}N) r r �hashlibr$ � ValueError� TypeErrorr �formatr �updater � hexdigest�_raise)r �chunks�gotsr- �chunk�hash�gotr r r �check_against_chunksS s zHashes.check_against_chunksc C s t | j|��d S )N)r r )r r8 r r r r6 m s z Hashes._raisec C s | � t|��S )zaCheck good hashes against a file-like object Raise HashMismatch if none match. )r< r )r �filer r r �check_against_fileq s zHashes.check_against_filec C s t |d�� }| �|�S Q R X d S )N�rb)�openr> )r �pathr= r r r �check_against_pathz s zHashes.check_against_pathc C s t | j�S )z,Return whether I know any known-good hashes.)�boolr )r r r r � __nonzero__ s zHashes.__nonzero__c C s | � � S )N)rD )r r r r �__bool__� s zHashes.__bool__)N)�__name__� __module__� __qualname__�__doc__r r& �propertyr+ r/ r< r6 r> rB rD rE r r r r r $ s r c s( e Zd ZdZ� fdd�Zdd� Z� ZS )� MissingHashesz�A workalike for Hashes used when we're missing a hash for a requirement It computes the actual hash of the requirement and raises a HashMissing exception showing it to the user. c s t t| �jtg id� dS )z!Don't offer the ``hashes`` kwarg.)r N)�superrK r � FAVORITE_HASH)r )� __class__r r r � s zMissingHashes.__init__c C s t |t �� ��d S )N)r rM r5 )r r8 r r r r6 � s zMissingHashes._raise)rF rG rH rI r r6 � __classcell__r r )rN r rK � s rK ) � __future__r r0 Zpip._vendor.sixr r r �pip._internal.exceptionsr r r �pip._internal.utils.miscr �pip._internal.utils.typingr �typingr r r r r r r r rM � STRONG_HASHES�objectr rK r r r r �<module> s e