U
    
Ha                     @   s   d 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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d	d
 ZG dd deZdddZdddZdS )zIBuild wheels/sdists by installing build deps to a temporary environment.
    N)
check_call)	get_paths)mkdtemp   )	toml_load)Pep517HookCallerLoggerWrapperc              	   C   sL   t jtj| ddd}t|}W 5 Q R X |d }|d |d |dfS )Nzpyproject.tomlzutf-8)encodingzbuild-systemrequireszbuild-backendzbackend-path)ioopenospathjoinr   get)
source_dirfZpyproject_dataZbuildsys r   ?/tmp/pip-unpacked-wheel-tx790h60/pip/_vendor/pep517/envbuild.py_load_pyproject   s    r   c                   @   s6   e Zd ZdZdZdddZdd Zdd	 Zd
d ZdS )BuildEnvironmentzContext manager to install build deps in a simple temporary environment

    Based on code I wrote for pip, which is MIT licensed.
    NTc                 C   s
   || _ d S )N)_cleanup)selfcleanupr   r   r   __init__=   s    zBuildEnvironment.__init__c                 C   s   t dd| _td| j tjdd | _tjdd | _tj	dkrHdnd}t
|| j| jdd	}|d
 }| jr|tj | j tjd< n|tj tj tjd< |d |d kr|d }n|d tj |d  }| jr|tj | j tjd< n
|tjd< | S )Nzpep517-build-env-)prefixzTemporary build environment: %sPATH
PYTHONPATHntposix_prefix)baseplatbase)varsscriptspurelibplatlib)r   r   loginfor   environr   	save_pathsave_pythonpathnamer   pathsepdefpath)r   Zinstall_schemeZinstall_dirsr#   lib_dirsr   r   r   	__enter__@   s0    


zBuildEnvironment.__enter__c                 C   sT   |sdS t d| tjddddd| jgt| }t|tt tj	tt tj
d dS )	zAInstall dependencies into this env by calling pip in a subprocessNzCalling pip to install %sz-mpipinstallz--ignore-installedz--prefix)stdoutstderr)r&   r'   sys
executabler   listr   r   loggingINFOERROR)r   reqscmdr   r   r   pip_install`   s$         

zBuildEnvironment.pip_installc                 C   s~   | j o| jd k	otj| j}|r.t| j | jd krHtjdd  n| jtjd< | j	d krntjdd  n| j	tjd< d S )Nr   r   )
r   r   r   isdirshutilrmtreer)   r(   popr*   )r   exc_typeexc_valexc_tbZneeds_cleanupr   r   r   __exit__n   s    

zBuildEnvironment.__exit__)T)	__name__
__module____qualname____doc__r   r   r/   r<   rD   r   r   r   r   r   !   s   
 r   c           	   
   C   sn   |dkri }t | \}}}t| ||}t 8}|| ||}|| |||W  5 Q R  S Q R X dS )am  Build a wheel from a source directory using PEP 517 hooks.

    :param str source_dir: Source directory containing pyproject.toml
    :param str wheel_dir: Target directory to create wheel in
    :param dict config_settings: Options to pass to build backend

    This is a blocking function which will run pip in a subprocess to install
    build requirements.
    N)r   r   r   r<   get_requires_for_build_wheelbuild_wheel)	r   	wheel_dirconfig_settingsr
   backendbackend_pathhooksenvr:   r   r   r   rJ      s    



rJ   c           	   
   C   sn   |dkri }t | \}}}t| ||}t 8}|| ||}|| |||W  5 Q R  S Q R X dS )am  Build an sdist from a source directory using PEP 517 hooks.

    :param str source_dir: Source directory containing pyproject.toml
    :param str sdist_dir: Target directory to place sdist in
    :param dict config_settings: Options to pass to build backend

    This is a blocking function which will run pip in a subprocess to install
    build requirements.
    N)r   r   r   r<   get_requires_for_build_sdistbuild_sdist)	r   Z	sdist_dirrL   r
   rM   rN   rO   rP   r:   r   r   r   rR      s    



rR   )N)N)rH   r   r   r7   r>   
subprocessr   r4   	sysconfigr   tempfiler   compatr   wrappersr   r   	getLoggerrE   r&   r   objectr   rJ   rR   r   r   r   r   <module>   s   
a
