U
    ƒIÀdþ  ã                   @   s”   d dl Z d dlmZmZmZmZmZmZ d dlm	Z	m
Z
mZ d dlmZ erdd dl mZ d dlmZ dZddd	gZG d
d„ dƒZG dd„ deƒZdS )é    N)ÚTYPE_CHECKINGÚBinaryIOÚDictÚIterableÚListÚOptional)ÚHashMismatchÚHashMissingÚInstallationError)Úread_chunks)Ú_Hash)ÚNoReturnÚsha256Úsha384Úsha512c                   @   sö   e Zd ZdZd%eeeee f  ddœdd„Zd d dœdd„Z	e
ed	œd
d„ƒZeeedœdd„Zee ddœdd„Zeedf ddœdd„Zeddœdd„Zeddœdd„Zeeef edœdd„Zed	œdd „Zeedœd!d"„Zed	œd#d$„ZdS )&ÚHasheszaA wrapper that builds multiple hashes at once and checks them against
    known-good values

    N)ÚhashesÚreturnc                 C   s4   i }|dk	r*|  ¡ D ]\}}t|ƒ||< q|| _dS )zo
        :param hashes: A dict of algorithm names pointing to lists of allowed
            hex digests
        N)ÚitemsÚsortedÚ_allowed)Úselfr   ÚallowedÚalgÚkeys© r   úS/home/sam/Atlas/atlas_env/lib/python3.8/site-packages/pip/_internal/utils/hashes.pyÚ__init__   s
    zHashes.__init__)Úotherr   c                    sb   t |tƒstS |sˆS ˆs|S i }|j ¡ D ],\‰ }ˆ ˆjkr@q,‡ ‡fdd„|D ƒ|ˆ < q,t|ƒS )Nc                    s   g | ]}|ˆj ˆ  kr|‘qS r   )r   )Ú.0Úv©r   r   r   r   Ú
<listcomp>;   s      z"Hashes.__and__.<locals>.<listcomp>)Ú
isinstancer   ÚNotImplementedr   r   )r   r   ÚnewÚvaluesr   r!   r   Ú__and__+   s    

zHashes.__and__©r   c                 C   s   t dd„ | j ¡ D ƒƒS )Nc                 s   s   | ]}t |ƒV  qd S ©N)Úlen)r   Údigestsr   r   r   Ú	<genexpr>@   s     z&Hashes.digest_count.<locals>.<genexpr>)Úsumr   r&   ©r   r   r   r   Údigest_count>   s    zHashes.digest_count)Ú	hash_nameÚ
hex_digestr   c                 C   s   || j  |g ¡kS )z/Return whether the given hex digest is allowed.)r   Úget)r   r0   r1   r   r   r   Úis_hash_allowedB   s    zHashes.is_hash_allowed)Úchunksr   c              
   C   s¨   i }| j  ¡ D ]>}zt |¡||< W q ttfk
rJ   td|› �ƒ‚Y qX q|D ]}| ¡ D ]}| |¡ q^qR| 	¡ D ] \}}| 
¡ | j | krx dS qx|  |¡ dS )z‚Check good hashes against ones built from iterable of chunks of
        data.

        Raise HashMismatch if none match.

        zUnknown hash name: N)r   r   Úhashlibr%   Ú
ValueErrorÚ	TypeErrorr
   r&   Úupdater   Ú	hexdigestÚ_raise)r   r4   Úgotsr0   ÚchunkÚhashÚgotr   r   r   Úcheck_against_chunksF   s    zHashes.check_against_chunksr   r   ©r;   r   c                 C   s   t | j|ƒ‚d S r)   )r   r   ©r   r;   r   r   r   r:   ]   s    zHashes._raise)Úfiler   c                 C   s   |   t|ƒ¡S )zaCheck good hashes against a file-like object

        Raise HashMismatch if none match.

        )r?   r   )r   rB   r   r   r   Úcheck_against_file`   s    zHashes.check_against_file)Úpathr   c              
   C   s,   t |dƒ�}|  |¡W  5 Q R £ S Q R X d S )NÚrb)ÚopenrC   )r   rD   rB   r   r   r   Úcheck_against_pathh   s    zHashes.check_against_pathc                 C   s(   |  ¡ D ]\}}|  ||¡r dS qdS )z3Return whether any of the given hashes are allowed.TF)r   r3   )r   r   r0   r1   r   r   r   Ú
has_one_ofl   s    zHashes.has_one_ofc                 C   s
   t | jƒS )z,Return whether I know any known-good hashes.)Úboolr   r.   r   r   r   Ú__bool__s   s    zHashes.__bool__c                 C   s   t |tƒstS | j|jkS r)   )r#   r   r$   r   )r   r   r   r   r   Ú__eq__w   s    
zHashes.__eq__c                 C   s"   t d tdd„ | j ¡ D ƒƒ¡ƒS )Nú,c                 s   s*   | ]"\}}|D ]}d   ||f¡V  qqdS )ú:N)Újoin)r   r   Údigest_listÚdigestr   r   r   r,      s    þz"Hashes.__hash__.<locals>.<genexpr>)r=   rN   r   r   r   r.   r   r   r   Ú__hash__|   s    þÿÿzHashes.__hash__)N)Ú__name__Ú
__module__Ú__qualname__Ú__doc__r   r   Ústrr   r   r'   ÚpropertyÚintr/   rI   r3   r   Úbytesr?   r:   r   rC   rG   rH   rJ   ÚobjectrK   rQ   r   r   r   r   r      s   "r   c                       s>   e Zd ZdZddœ‡ fdd„Zeedf ddœd	d
„Z‡  ZS )ÚMissingHasheszÀA 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.

    Nr(   c                    s   t ƒ jtg id� dS )z!Don't offer the ``hashes`` kwarg.)r   N)Úsuperr   ÚFAVORITE_HASHr.   ©Ú	__class__r   r   r   �   s    zMissingHashes.__init__r   r   r@   c                 C   s   t |t  ¡ ƒ‚d S r)   )r	   r]   r9   rA   r   r   r   r:   –   s    zMissingHashes._raise)	rR   rS   rT   rU   r   r   rV   r:   Ú__classcell__r   r   r^   r   r[   ˆ   s   r[   )r5   Útypingr   r   r   r   r   r   Úpip._internal.exceptionsr   r	   r
   Úpip._internal.utils.miscr   r   r   r]   ÚSTRONG_HASHESr   r[   r   r   r   r   Ú<module>   s    
o