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Editing: plugin.cpython-38.pyc
U ��W[� � @ s d Z ddlmZmZ ddlZddlZddlmZmZ dd� Z e � Z ddl m Z ddl mZ dd lmZ dd lmZ dd lmZ G d d � d e�ZG dd� de�ZG dd� de�Zdd� Zz ejZW n e k r� d dd�ZY nX dd� Z d dd�Z e Z dd� Z ddgZ!dS ) zL Plugin system for Twisted. @author: Jp Calderone @author: Glyph Lefkowitz � )�absolute_import�divisionN)� Interface� providedByc C s4 zddl } | W S tk r. ddl}| Y S X dS )z5 Determine which 'pickle' API module to use. r N)�cPickle� ImportError�pickle)r r � r �0/usr/lib/python3/dist-packages/twisted/plugin.py�_determinePickleModule s r )�getAdapterFactory)�namedAny)�log)� getModule)� iteritemsc @ s e Zd ZdZdS )�IPluginz� Interface that must be implemented by all plugins. Only objects which implement this interface will be considered for return by C{getPlugins}. To be useful, plugins should also implement some other application-specific interface. N)�__name__� __module__� __qualname__�__doc__r r r r r ) s r c @ s2 e Zd Zdd� Zdd� Zdd� Zd dd �ZeZdS ) � CachedPluginc C s* || _ || _|| _|| _| j j�| � d S �N)�dropin�name� description�provided�plugins�append)�selfr r r r r r r �__init__5 s zCachedPlugin.__init__c C s& d| j | jjd�dd� | jD ��f S )Nz"<CachedPlugin %r/%r (provides %r)>z, c S s g | ] }|j �qS r )r )�.0�ir r r � <listcomp>? s z)CachedPlugin.__repr__.<locals>.<listcomp>)r r � moduleName�joinr �r r r r �__repr__< s �zCachedPlugin.__repr__c C s t | jjd | j �S )N�.)r r r# r r% r r r �loadA s zCachedPlugin.loadNc C sH | j D ]<}|�|�r | �� S t||d �d k r|| �� |� S q|S r )r Z isOrExtendsr( r )r � interface�registry�defaultZprovidedInterfacer r r � __conform__D s zCachedPlugin.__conform__)NN)r r r r r& r( r, Z getComponentr r r r r 4 s r c @ s e Zd ZdZdd� ZdS )� CachedDropina� A collection of L{CachedPlugin} instances from a particular module in a plugin package. @type moduleName: C{str} @ivar moduleName: The fully qualified name of the plugin module this represents. @type description: C{str} or L{None} @ivar description: A brief explanation of this collection of plugins (probably the plugin module's docstring). @type plugins: C{list} @ivar plugins: The L{CachedPlugin} instances which were loaded from this dropin. c C s || _ || _g | _d S r )r# r r )r r# r r r r r b s zCachedDropin.__init__N)r r r r r r r r r r- Q s r- c C sP t | j| j�}t| j�D ]2\}}t|d �}|d k rt|||jtt|��� q|S r ) r- r r r �__dict__r r �listr )�providerr �k�v�pluginr r r �_generateCacheEntryi s � r4 c C s i }| D ] }|||< q|S r r )�keys�value�dr1 r r r �fromkeysv s r8 c C s� i }t | j�}i }|�� D ]0}|j�� }||kr8g ||< || }|�|� qt|�D �]f\}}|�d�}z,|�� } |� d��} t � | �} W 5 Q R X W n i } d} Y nX d} i } |D ]h}|j � d�d }d| |< || ks�|j�� | kr�d} z |� � }W n t�� Y q�X t|�}|| |< q�t| �� �D ]}|| k�r,| |= d} �q,| �r�z|�t �| �� W nN tk �r� } ztjd|j|jd � W 5 d }~X Y n t�d d � Y nX |�| � qT|S ) a; Compute all the possible loadable plugins, while loading as few as possible and hitting the filesystem as little as possible. @param module: a Python module object. This represents a package to search for plugins. @return: a dictionary mapping module names to L{CachedDropin} instances. z dropin.cache�rr Fr' ���Tz@Unable to write to plugin cache %(path)s: error number %(errno)d)�format�path�errnoNz)Unexpected error while writing cache file)r r Z iterModulesZfilePath�parentr r ZchildZgetModificationTime�openr r( r �splitr �errr4 r/ r5 Z setContent�dumps�OSError�msgr< r= �update)�moduleZallCachesCombined�modZbucketsZplugmodZfppZbucketZpseudoPackagePathZ dropinPathZ lastCached�fZdropinDotCacheZ needsWriteZ existingKeysZ pluginModuleZ pluginKeyr0 �entry�er r r �getCache~ sd � � rK c c sp |dkrddl m} t|�}t|�D ]F\}}|jD ]6}z| |d�}W n t�� Y q2X |dk r2|V q2q$dS )ac Retrieve all plugins implementing the given interface beneath the given module. @param interface: An interface class. Only plugins which implement this interface will be returned. @param package: A package beneath which plugins are installed. For most uses, the default value is correct. @return: An iterator of plugins. Nr )Ztwisted.pluginsr rK r r rA )r) �packageZ allDropins�keyr r3 Zadaptedr r r � getPlugins� s rN c s | � d�� � fdd�tjD �S )a� Return a list of additional directories which should be searched for modules to be included as part of the named plugin package. @type name: C{str} @param name: The fully-qualified Python name of a plugin package, eg C{'twisted.plugins'}. @rtype: C{list} of C{str} @return: The absolute paths to other directories which may contain plugin modules for the named plugin package. r' c sF g | ]>}t j�t jj|f� d g �� �st j�t jj|f� �� ��qS )z __init__.py)�osr< �existsr$ �abspath)r �x�rL r r r" � s �z&pluginPackagePaths.<locals>.<listcomp>)r@ �sysr< )r r rS r �pluginPackagePaths� s �rU )N)N)"r Z __future__r r rO rT Zzope.interfacer r r r Ztwisted.python.componentsr Ztwisted.python.reflectr Ztwisted.pythonr Ztwisted.python.modulesr Ztwisted.python.compatr r �objectr r- r4 �dictr8 �AttributeErrorrK rN Z getPlugInsrU �__all__r r r r �<module> s0 I
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