U
    P^                     @   s   d Z ddlZ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	 ddl
mZmZ ddlmZ eeZdd	 Zd
d Zdd Zdd Zd"ddZe Zejddd ejddddd ejddddd ejdddd dd  Zed!kree  dS )#z%Build a project using PEP 517 hooks.
    N   )BuildEnvironment)Pep517HookCaller)tempdirmkdir_p)FileNotFoundErrorc                 C   s4   ddh}|t | ks0dj|t |  d}t|dS )z7
    Ensure build system has the requisite fields.
    requiresbuild-backendz"Missing required fields: {missing})missingN)setformat
ValueError)systemrequiredmessage r   9/tmp/pip-install-220asx0h/pip/pip/_vendor/pep517/build.pyvalidate_system   s    
r   c              	   C   s4   t j| d}t|}t|}W 5 Q R X |d S )zC
    Load the build system from a source dir (pyproject.toml).
    zpyproject.tomlzbuild-system)ospathjoinopentomlload)
source_dir	pyprojectfZpyproject_datar   r   r   load_system   s    
r   c              	   C   sJ   zt | }W n ttfk
r(   i }Y nX |dd |dddg |S )z
    Given a source dir, attempt to get a build system backend
    and requirements from pyproject.toml. Fallback to
    setuptools but only if the file was not found or a build
    system was not indicated.
    r	   z setuptools.build_meta:__legacy__r   
setuptoolswheel)r   r   KeyError
setdefault)r   r   r   r   r   compat_system'   s    
r"   c              
   C   s   dj f t }t| |}|i }td| || td t b}td|| dj f t }t| |}	|	|i }
tj	||
}t
|tj	|tj|
 W 5 Q R X d S )Nzget_requires_for_build_{dist}zGot build requires: %sz$Installed dynamic build dependencieszTrying to build %s in %szbuild_{dist})r   localsgetattrloginfopip_installr   r   r   r   shutilmovebasename)hooksenvdistdestZget_requires_nameget_requiresreqstdZ
build_namebuildfilenamesourcer   r   r   	_do_build:   s    




r5   c              	   C   sv   |p
t | }tj| |pd}t| t| t| |d |d}t "}|	|d  t
|||| W 5 Q R X d S )Nr-   r	   zbackend-pathr   )r   r   r   r   r   r   r   getr   r'   r5   )r   r-   r.   r   r+   r,   r   r   r   r2   L   s      r2   r   z%A directory containing pyproject.toml)helpz--binaryz-b
store_trueF)actiondefaultz--sourcez-sz	--out-dirz-oz>Destination in which to save the builds relative to source dirc                 C   sP   t td | js| jsdnd | js$| js(dnd f}|D ]}t| j|| j q6d S )Nsdistr   )listfilterr4   binaryr2   r   Zout_dir)argsdistsr-   r   r   r   mainp   s    rA   __main__)NN)__doc__argparseloggingr   r   r(   Zenvbuildr   wrappersr   Zdirtoolsr   r   compatr   	getLogger__name__r%   r   r   r"   r5   r2   ArgumentParserparseradd_argumentrA   
parse_argsr   r   r   r   <module>   sP   


   