U
    KQh=                     @   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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t d | j	d| j d S )	Nz-az--algorithm	algorithmstorez$The hash algorithm to use: one of %sz, )destchoicesactiondefaulthelpr   )
superr   __init__cmd_opts
add_optionr   r   joinparserinsert_option_group)selfargskw	__class__ 0/tmp/pip-build-tlro1kwj/pip/pip/commands/hash.pyr      s     zHashCommand.__init__c              	   C   s@   |s| j tj tS |j}|D ]}td||t|| q d S )Nz%s:
--hash=%s:%s)	r   print_usagesysstderrr   r
   loggerinfo_hash_of_file)r   optionsr   r
   pathr   r   r   run(   s      zHashCommand.run)
__name__
__module____qualname____doc__nameusagesummaryr   r'   __classcell__r   r   r   r   r      s   r   c              	   C   s@   t | d(}t|}t|D ]}|| qW 5 Q R X | S )z!Return the hash digest of a file.rb)openhashlibnewr   update	hexdigest)r&   r
   archiver	   chunkr   r   r   r$   3   s
    
r$   )
__future__r   r2   loggingr    pip.basecommandr   pip.status_codesr   	pip.utilsr   pip.utils.hashesr   r   	getLoggerr(   r"   r   r$   r   r   r   r   <module>   s   
#