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Editing: _flatten.cpython-38.pyc
U W[� � @ sZ d Z ddlmZ ddlmZ ddlmZ e� ZG dd� de�Z dd� Z d d � Z d d � Z d S )z� Code related to "flattening" events; that is, extracting a description of all relevant fields from the format string and persisting them for later examination. � )� Formatter)� defaultdict)�unicodec @ s e Zd ZdZdd� Zdd� ZdS )� KeyFlattenerz� A L{KeyFlattener} computes keys for the things within curly braces in PEP-3101-style format strings as parsed by L{string.Formatter.parse}. c C s t dd� �| _dS )z/ Initialize a L{KeyFlattener}. c S s dS )Nr � r r r �9/usr/lib/python3/dist-packages/twisted/logger/_flatten.py�<lambda> � z'KeyFlattener.__init__.<locals>.<lambda>N)r �keys)�selfr r r �__init__ s zKeyFlattener.__init__c C sV dj ||p d|pdd�}| j| d7 < | j| }|dkrR|dt| j| � 7 }|S )a Compute a string key for a given field/format/conversion. @param fieldName: A format field name. @type fieldName: L{str} @param formatSpec: A format spec. @type formatSpec: L{str} @param conversion: A format field conversion type. @type conversion: L{str} @return: A key specific to the given field, format and conversion, as well as the occurrence of that combination within this L{KeyFlattener}'s lifetime. @rtype: L{str} z%{fieldName}!{conversion}:{formatSpec}� )� fieldName� formatSpec� conversion� �/)�formatr �str)r r r r �result�nr r r �flatKey! s �� zKeyFlattener.flatKeyN)�__name__� __module__� __qualname__�__doc__r r r r r r r s r c C s | � dd�dkrdS d| kr&| d }ni }t� }t�| d �D ]�\}}}}|dkrTq>|dkr`d}|�|||�}|�||d�}||kr�q>|�d�r�|dd� }d } nd } t�|d | �} | d } |dkr�t} nt} | r�| � } | | �} | ||< | ||< q>|r�|| d< dS ) z� Flatten the given event by pre-associating format fields with specific objects and callable results in a L{dict} put into the C{"log_flattened"} key in the event. @param event: A logging event. @type event: L{dict} � log_formatN� log_flattened�r�sr z()���TFr r ) �getr � aFormatter�parser �endswithZ get_field�reprr )�eventZfields� keyFlattener� literalTextr r r Z flattenedKeyZ structuredKeyZcallit�fieldZ fieldValueZconversionFunctionZflattenedValuer r r � flattenEventC s@ � r* c C sL t � }t�d| d �\\}}}}|�|||�}d|kr@t|� |d | S )a� Extract a given format field from the given event. @param field: A string describing a format field or log key. This is the text that would normally fall between a pair of curly braces in a format string: for example, C{"key[2].attribute"}. If a conversion is specified (the thing after the C{"!"} character in a format field) then the result will always be L{unicode}. @type field: L{str} (native string) @param event: A log event. @type event: L{dict} @return: A value extracted from the field. @rtype: L{object} @raise KeyError: if the field is not found in the given event. �{�}r )r r" r# r r* )r) r& r' r( r r r �keyr r r � extractField� s �r. c C sr | d }g }t � }t�| d �}|D ]B\}}}}|�|� |dk r$|�|||pPd�} |�t|| �� q$d�|�S )z� Format an event which has been flattened with L{flattenEvent}. @param event: A logging event. @type event: L{dict} @return: A formatted string. @rtype: L{unicode} r r Nr r )r r" r# �appendr r �join) r& Z fieldValuesr r' Z formatFieldsr( r r r r- r r r � flatFormat� s �r1 N) r �stringr � collectionsr Ztwisted.python.compatr r" �objectr r* r. r1 r r r r �<module> s /=
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