3

g                 @   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
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)FAVORITE_HASHSTRONG_HASHES)read_chunkswrite_outputc                   s0   e 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.
    z%prog [options] <file> ...Tc          
      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$The hash algorithm to use: one of %sz, )destchoicesactiondefaulthelpr   )
superr	   __init__cmd_opts
add_optionr   r   joinparserinsert_option_group)selfargskw)	__class__ ?/tmp/pip-unpacked-wheel-v59g9nu1/pip/_internal/commands/hash.pyr      s    zHashCommand.__init__c             C   sB   |s| j jtj tS |j}x |D ]}td||t|| q"W d S )Nz%s:
--hash=%s:%s)r   print_usagesysstderrr   r
   r   _hash_of_file)r   optionsr   r
   pathr   r   r   run)   s    
zHashCommand.run)	__name__
__module____qualname____doc__usageignore_require_venvr   r$   __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
   archivehashchunkr   r   r   r!   4   s
    
r!   )
__future__r   r.   loggingr   pip._internal.cli.base_commandr   pip._internal.cli.status_codesr   pip._internal.utils.hashesr   r   pip._internal.utils.miscr   r   	getLoggerr%   loggerr	   r!   r   r   r   r   <module>   s   
"