3
LY=                 @   s~   d dl mZ d dlZd dlZd dlZd dlmZ d dlmZ d dl	m
Z
 d dlmZmZ ejeZG dd deZd	d
 ZdS )    )absolute_importN)Command)ERROR)read_chunks)FAVORITE_HASHSTRONG_HASHESc                   s4   e Zd ZdZdZdZdZ fddZdd 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|| | jjdddtdtddjt d | jj	d| j d S )	Nz-az--algorithm	algorithmstorez$The hash algorithm to use: one of %sz, )destchoicesactiondefaulthelpr   )
superr   __init__cmd_opts
add_optionr   r   joinparserinsert_option_group)selfargskw)	__class__ d/private/var/folders/7d/20zwc49s3kn54d3vgq8bd4640000gn/T/pip-build-an2lx5zf/pip/pip/commands/hash.pyr      s    zHashCommand.__init__c             C   sD   |s| j jtj tS |j}x"|D ]}tjd||t|| q"W d S )Nz%s:
--hash=%s:%s)	r   print_usagesysstderrr   r
   loggerinfo_hash_of_file)r   optionsr   r
   pathr   r   r   run(   s    
zHashCommand.run)
__name__
__module____qualname____doc__nameusagesummaryr   r&   __classcell__r   r   )r   r   r      s   r   c          
   C   sD   t | d,}tj|}xt|D ]}|j| q W W dQ R X |j S )z!Return the hash digest of a file.rbN)openhashlibnewr   update	hexdigest)r%   r
   archiver	   chunkr   r   r   r#   3   s
    
r#   )
__future__r   r1   loggingr   pip.basecommandr   pip.status_codesr   	pip.utilsr   pip.utils.hashesr   r   	getLoggerr'   r!   r   r#   r   r   r   r   <module>   s   
#