3
�Pf= � @ s~ d dl mZ d dlZd dlZd dlZd dlmZ d dlmZ d dl m
Z
d dl m Z m
Z
eje�ZG dd� de�Zd d
� ZdS ) � )�absolute_importN)�Command)�ERROR)� read_chunks)�
FAVORITE_HASH�
STRONG_HASHESc s4 e Zd ZdZdZdZdZ� fdd�Zdd� Z� Z S ) � HashCommandz�
Compute a hash of a local package archive.
These can be used with --hash in a requirements file to do repeatable
installs.
�hashz%prog [options] <file> ...z#Compute hashes of package archives.c
sJ t t| �j||� | jjdddtdtddjt� d� | jj d| j� d S ) Nz-az --algorithm� algorithmZstorez$The hash algorithm to use: one of %sz, )�dest�choices�action�default�helpr )
�superr �__init__Zcmd_optsZ
add_optionr r �join�parserZinsert_option_group)�self�args�kw)� __class__� �/usr/lib/python3.6/hash.pyr s zHashCommand.__init__c C sD |s| j jtj� tS |j}x"|D ]}tjd||t||�� q"W d S )Nz%s:
--hash=%s:%s) r Z print_usage�sys�stderrr r
�logger�info�
_hash_of_file)r Zoptionsr r
�pathr r r �run( s
zHashCommand.run)
�__name__�
__module__� __qualname__�__doc__�nameZusageZsummaryr r �
__classcell__r r )r r r s r c
C sD t | d��,}tj|�}xt|�D ]}|j|� q W W dQ R X |j� S )z!Return the hash digest of a file.�rbN)�open�hashlib�newr �updateZ hexdigest)r r
�archiver �chunkr r r r 3 s
r )Z
__future__r r) Zloggingr Zpip.basecommandr Zpip.status_codesr Z pip.utilsr Zpip.utils.hashesr r Z getLoggerr! r r r r r r r �<module> s
#