𝗖𝗨𝗥𝗥𝗘𝗡𝗧 𝗙𝗜𝗟𝗘 : /lib/python3.6/site-packages/pip/utils/__pycache__//hashes.cpython-36.pyc
3
�Pf2 � @ sz d dl mZ d dlZd dlmZmZmZ d dlmZ d dl m
Z
m Z m Z dZ
dddgZG d d
� d
e�ZG d d � d e�ZdS )
� )�absolute_importN)� HashMismatch� HashMissing�InstallationError)� read_chunks)� iteritems�iterkeys�
itervaluesZsha256Zsha384Zsha512c @ sJ e Zd ZdZddd�Zdd� Zdd� Zd d
� Zd d � Zd
d� Z dd� Z
dS )�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 � /usr/lib/python3.6/hashes.py�__init__ s zHashes.__init__c
C s� i }xJt | j�D ]<}ytj|�||< W q ttfk
rJ td| ��Y qX qW x(|D ] }xt|�D ]}|j|� qdW qVW x*t |�D ] \}}|j
� | j| kr�dS q�W | j |� dS )z�Check good hashes against ones built from iterable of chunks of
data.
Raise HashMismatch if none match.
zUnknown hash name: %sN) r r �hashlib�new�
ValueError� TypeErrorr r �updater � hexdigest�_raise)r Zchunks�gotsZ hash_name�chunk�hashZgotr r r �check_against_chunks s
zHashes.check_against_chunksc C s t | j|��d S )N)r r )r r r r r r 7 s z
Hashes._raisec C s | j t|��S )zaCheck good hashes against a file-like object
Raise HashMismatch if none match.
)r r )r �filer r r �check_against_file: s zHashes.check_against_filec C s t |d�� }| j|�S Q R X d S )N�rb)�openr )r �pathr r r r �check_against_pathB 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__F s zHashes.__nonzero__c C s | j � S )N)r# )r r r r �__bool__J s zHashes.__bool__)N) �__name__�
__module__� __qualname__�__doc__r r r r r! r# r$ 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)�superr) r �
FAVORITE_HASH)r )� __class__r r r U s zMissingHashes.__init__c C s t |t j� ��d S )N)r r+ r )r r r r r r [ s zMissingHashes._raise)r% r& r' r( r r �
__classcell__r r )r, r r) N s r) )Z
__future__r r Zpip.exceptionsr r r Z pip.utilsr Zpip._vendor.sixr r r r+ Z
STRONG_HASHES�objectr
r) r r r r �<module> s
: