U
    d%                     @   s   d dl Z d dlZd dlZd dlZd dlmZ d dlmZmZm	Z	m
Z
mZmZ d dlmZ d dlmZ d dlmZ eeZe jeed dd	d
Ze jed dddZG dd dZdS )    N)TracebackType)Dict	GeneratorOptionalSetTypeUnion)Link)InstallRequirement)TempDirectoryNNN)changesreturnc               
   k   s   t j}t }i }|  D ]>\}}z|| ||< W n tk
rL   |||< Y nX |||< qz
d V  W 5 | D ].\}}||kr||= qlt|tst|||< qlX d S N)osenvironobjectitemsKeyError
isinstancestrAssertionError)r   targetZnon_existent_markerZsaved_valuesnameZ	new_valueoriginal_value r   M/tmp/pip-install-xwugzb3_/pip/pip/_internal/operations/build/build_tracker.pyupdate_env_context_manager   s     

r   )BuildTrackerNNr   c               
   c   st   t jd} t V}| d krL|tddj} |t| d t	
d|  t| }|V  W 5 Q R X W 5 Q R X d S )NPIP_BUILD_TRACKERzbuild-tracker)kind)r    z Initialized build tracking at %s)r   r   get
contextlib	ExitStackenter_contextr   pathr   loggerdebugr   )rootctxZtrackerr   r   r   get_build_tracker)   s    

r+   c                   @   s   e Zd ZeddddZd dddZeee  ee ee	 ddd	d
Z
eedddZeddddZeddddZddddZejeed dddZdS )r   N)r)   r   c                 C   s    || _ t | _td| j  d S )NzCreated build tracker: %s)_rootset_entriesr'   r(   )selfr)   r   r   r   __init__7   s    zBuildTracker.__init__r   c                 C   s   t d| j | S )NzEntered build tracker: %s)r'   r(   r,   )r/   r   r   r   	__enter__<   s    zBuildTracker.__enter__)exc_typeexc_valexc_tbr   c                 C   s   |    d S r   )cleanup)r/   r2   r3   r4   r   r   r   __exit__@   s    zBuildTracker.__exit__)linkr   c                 C   s$   t |j  }tj| j|S r   )	hashlibsha224url_without_fragmentencode	hexdigestr   r&   joinr,   )r/   r7   hashedr   r   r   _entry_pathH   s    zBuildTracker._entry_path)reqr   c              	   C   s   |j s
t| |j }z t|}| }W 5 Q R X W n tk
rJ   Y nX d|j |}t||| jksptt|ddd}|	t
| W 5 Q R X | j| td|| j dS )z,Add an InstallRequirement to build tracking.z{} is already being built: {}wzutf-8)encodingzAdded %s to build tracker %rN)r7   r   r?   openreadFileNotFoundErrorformatLookupErrorr.   writer   addr'   r(   r,   )r/   r@   
entry_pathfpcontentsmessager   r   r   rI   L   s    

zBuildTracker.addc                 C   s<   |j s
tt| |j  | j| td|| j	 dS )z1Remove an InstallRequirement from build tracking.z Removed %s from build tracker %rN)
r7   r   r   unlinkr?   r.   remover'   r(   r,   r/   r@   r   r   r   rO   h   s    
zBuildTracker.removec                 C   s,   t | jD ]}| | q
td| j d S )NzRemoved build tracker: %r)r-   r.   rO   r'   r(   r,   rP   r   r   r   r5   r   s    zBuildTracker.cleanupr   c                 c   s   |  | d V  | | d S r   )rI   rO   rP   r   r   r   trackx   s    
zBuildTracker.track)__name__
__module____qualname__r   r0   r1   r   r   BaseExceptionr   r6   r	   r?   r
   rI   rO   r5   r#   contextmanagerr   rQ   r   r   r   r   r   6   s   

r   )r#   r8   loggingr   typesr   typingr   r   r   r   r   r   pip._internal.models.linkr	   pip._internal.req.req_installr
   pip._internal.utils.temp_dirr   	getLoggerrR   r'   rV   r   r   r+   r   r   r   r   r   <module>   s    
