U
    HaS                     @   s   d dl mZ d dlmZ d dlmZ d dlmZ d dlm	Z	 d dl
mZ d dlmZ d dlmZ d	d
lmZ G dd deZG dd dZdddZdd Zdd Zdd ZdS )    )import_module)walk_packages)apps)settings)TemplateDoesNotExist)make_context)Engine)InvalidTemplateLibrary   )
BaseEnginec                       s8   e Zd ZdZ fddZdd Zdd Zdd	 Z  ZS )
DjangoTemplatesZ	templatesc                    sz   |  }|d  }|dd |dtj |dd |di }| ||d< t | t	| j
| jf|| _d S )NOPTIONS
autoescapeTdebugZfile_charsetzutf-8	libraries)copypop
setdefaultr   DEBUGgetget_templatetag_librariessuper__init__r   dirsZapp_dirsengine)selfparamsoptionsr   	__class__ C/tmp/pip-unpacked-wheel-3jxiddxt/django/template/backends/django.pyr      s    zDjangoTemplates.__init__c                 C   s   t | j|| S N)Templater   from_string)r   Ztemplate_coder    r    r!   r$      s    zDjangoTemplates.from_stringc              
   C   sF   zt | j|| W S  tk
r@ } zt||  W 5 d }~X Y nX d S r"   )r#   r   get_templater   reraise)r   Ztemplate_nameexcr    r    r!   r%       s    zDjangoTemplates.get_templatec                 C   s   t  }|| |S )z
        Return a collation of template tag libraries from installed
        applications and the supplied custom_libraries argument.
        )get_installed_librariesupdate)r   Zcustom_librariesr   r    r    r!   r   &   s    
z)DjangoTemplates.get_templatetag_libraries)	__name__
__module____qualname__Zapp_dirnamer   r$   r%   r   __classcell__r    r    r   r!   r      s
   r   c                   @   s*   e Zd Zdd Zedd ZdddZdS )	r#   c                 C   s   || _ || _d S r"   )templatebackend)r   r.   r/   r    r    r!   r   2   s    zTemplate.__init__c                 C   s   | j jS r"   )r.   origin)r   r    r    r!   r0   6   s    zTemplate.originNc              
   C   sV   t ||| jjjd}z| j|W S  tk
rP } zt|| j W 5 d }~X Y nX d S )N)r   )r   r/   r   r   r.   renderr   r&   )r   contextrequestr'   r    r    r!   r1   :   s
    zTemplate.render)NN)r*   r+   r,   r   propertyr0   r1   r    r    r    r!   r#   0   s   
r#   Nc                 C   s:   |p| j }| j| j| j|| jd}t| dr6| j|_|S )z
    Create a new TemplateDoesNotExist. Preserve its declared attributes and
    template debug data but discard __traceback__, __context__, and __cause__
    to make this object suitable for keeping around (in a cache, for example).
    )triedr/   chaintemplate_debug)r/   r   argsr5   r6   hasattrr7   r'   r/   newr    r    r!   copy_exceptionB   s
    

r<   c                 C   s   t | |}|| dS )zT
    Reraise TemplateDoesNotExist while maintaining template debug information.
    N)r<   r:   r    r    r!   r&   O   s    
r&   c               	   C   s   i } dg}| dd t D  |D ]Z}zt|}W n tk
rN   Y q&Y nX t|dr&t|D ]}|| |t|d d < qbq&| S )a  
    Return the built-in template tag libraries and those from installed
    applications. Libraries are stored in a dictionary where keys are the
    individual module names, not the full module paths. Example:
    django.templatetags.i18n is stored as i18n.
    zdjango.templatetagsc                 s   s   | ]}d |j  V  qdS )z%s.templatetagsN)name).0Z
app_configr    r    r!   	<genexpr>`   s   z*get_installed_libraries.<locals>.<genexpr>__path__r
   N)extendr   Zget_app_configsr   ImportErrorr9   get_package_librarieslen)r   
candidates	candidatepkgr=   r    r    r!   r(   W   s    


r(   c                 c   sz   t | j| jd D ]b}zt|d }W n8 tk
r^ } ztd|d |f |W 5 d}~X Y nX t|dr|d V  qdS )zZ
    Recursively yield template tag libraries defined in submodules of a
    package.
    .r
   zSInvalid template library specified. ImportError raised when trying to load '%s': %sNregister)r   r@   r*   r   rB   r	   r9   )rG   entrymoduleer    r    r!   rC   r   s    

rC   )N)	importlibr   pkgutilr   Zdjango.appsr   Zdjango.confr   Zdjango.templater   Zdjango.template.contextr   Zdjango.template.enginer   Zdjango.template.libraryr	   baser   r   r#   r<   r&   r(   rC   r    r    r    r!   <module>   s   "
