3
v^Z                 @   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 )
DjangoTemplates	templatesc                s|   |j  }|jdj  }|jdd |jdtj |jdtj |jdi }| j||d< t j	| t
| j| jf|| _d S )NOPTIONS
autoescapeTdebugfile_charset	libraries)copypop
setdefaultr   DEBUGFILE_CHARSETgetget_templatetag_librariessuper__init__r   dirsapp_dirsengine)selfparamsoptionsr   )	__class__ C/usr/lib/python3.6/site-packages/django/template/backends/django.pyr      s    zDjangoTemplates.__init__c             C   s   t | jj|| S )N)Templater   from_string)r   template_coder#   r#   r$   r&      s    zDjangoTemplates.from_stringc             C   sD   yt | jj|| S  tk
r> } zt||  W Y d d }~X nX d S )N)r%   r   get_templater   reraise)r   template_nameexcr#   r#   r$   r(       s    zDjangoTemplates.get_templatec             C   s   t  }|j| |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$   r   &   s    
z)DjangoTemplates.get_templatetag_libraries)	__name__
__module____qualname__app_dirnamer   r&   r(   r   __classcell__r#   r#   )r"   r$   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 )N)templatebackend)r   r3   r4   r#   r#   r$   r   2   s    zTemplate.__init__c             C   s   | j jS )N)r3   origin)r   r#   r#   r$   r5   6   s    zTemplate.originNc             C   sT   t ||| jjjd}y| jj|S  tk
rN } zt|| j W Y d d }~X nX d S )N)r   )r   r4   r   r   r3   renderr   r)   )r   contextrequestr+   r#   r#   r$   r6   :   s
    zTemplate.render)NN)r.   r/   r0   r   propertyr5   r6   r#   r#   r#   r$   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).
    )triedr4   chaintemplate_debug)r4   r"   argsr:   r;   hasattrr<   )r+   r4   newr#   r#   r$   copy_exceptionB   s
    

r@   c             C   s   t | |}|| dS )zT
    Reraise TemplateDoesNotExist while maintaining template debug information.
    N)r@   )r+   r4   r?   r#   r#   r$   r)   O   s    
r)   c              C   s   i } dg}|j dd tj D  xd|D ]\}yt|}W n tk
rN   w(Y nX t|dr(x(t|D ]}|| |t|d d < qdW q(W | 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).0
app_configr#   r#   r$   	<genexpr>a   s   z*get_installed_libraries.<locals>.<genexpr>__path__r
   N)extendr   get_app_configsr   ImportErrorr>   get_package_librarieslen)r   
candidates	candidatepkgrA   r#   r#   r$   r,   W   s    

 r,   c             c   s|   xvt | j| jd D ]`}yt|d }W n6 tk
r^ } ztd|d |f W Y dd}~X nX t|dr|d V  qW 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   rE   r.   r   rH   r	   r>   )rM   entrymoduleer#   r#   r$   rI   r   s    "
rI   )N)	importlibr   pkgutilr   django.appsr   django.confr   django.templater   django.template.contextr   Zdjango.template.enginer   Zdjango.template.libraryr	   baser   r   r%   r@   r)   r,   rI   r#   r#   r#   r$   <module>   s   "
