3
\
� @ s� d Z ddlZddlZddlmZ i ZdZdgZejZG dd� de e
�Z d d
� Z d d � Z
eje
� ejd
kr|dd� Zeje� dS )a3 Standard "encodings" Package
Standard Python encoding modules are stored in this package
directory.
Codec modules must have names corresponding to normalized encoding
names as defined in the normalize_encoding() function below, e.g.
'utf-8' must be implemented by the module 'utf_8.py'.
Each codec module must export the following interface:
* getregentry() -> codecs.CodecInfo object
The getregentry() API must return a CodecInfo object with encoder, decoder,
incrementalencoder, incrementaldecoder, streamwriter and streamreader
atttributes which adhere to the Python Codec Interface Standard.
In addition, a module may optionally also define the following
APIs which are then used by the package's codec search function:
* getaliases() -> sequence of encoding name strings to use as aliases
Alias names returned by getaliases() must be normalized encoding
names as defined by normalize_encoding().
Written by Marc-Andre Lemburg ([email protected]).
(c) Copyright CNRI, All Rights Reserved. NO WARRANTY.
� N� )�aliasesz --unknown--�*c @ s e Zd ZdS )�CodecRegistryErrorN)�__name__�
__module__� __qualname__� r r �*/usr/lib64/python3.6/encodings/__init__.pyr ( s r c C sj t | t�rt| d�} g }d}xB| D ]:}|j� s6|dkrX|rH|rH|jd� |j|� d}q"d}q"W dj|�S )a� Normalize an encoding name.
Normalization works as follows: all non-alphanumeric
characters except the dot used for Python package names are
collapsed and replaced with a single underscore, e.g. ' -;#'
becomes '_'. Leading and trailing underscores are removed.
Note that encoding names should be ASCII only; if they do use
non-ASCII characters, these must be Latin-1 compatible.
�asciiF�.�_T� )�
isinstance�bytes�str�isalnum�append�join)�encoding�chars�punct�cr r r
�normalize_encoding+ s
r c
C s� t j| t�}|tk r|S t| �}tj|�p:tj|jdd��}|d k rN||g}n|g}xN|D ]B}| sZd|krnqZytd| tdd�}W n tk
r� Y qZX P qZW d }y
|j }W n t
k
r� d }Y nX |d kr�d t | < d S |� }t |t j
��s:dt|� k�odkn �s$td|j|jf ��t|d � �s�t|d � �s�|d
d k �rbt|d
� �s�|d d k �r�t|d � �s�t|�dk�r�|d d k �r�t|d � �s�t|�d k�r�|d d k �r�t|d � �r�td
|j|jf ��t|�dk �s|d d k�r0|ddt|� |jjdd �d f 7 }t j
|� }|t | < y |j� }W n t
k
�rd Y n$X x |D ]} | tk�rl|t| < �qlW |S )Nr r
z
encodings.r )�fromlist�level� � z#module "%s" (%s) failed to registerr � � � z'incompatible codecs in module "%s" (%s)� )N)�_cache�get�_unknownr �_aliases�replace�
__import__� _import_tail� ImportError� getregentry�AttributeErrorr �codecs� CodecInfo�lenr r �__file__�callable�split�
getaliases)
r �entry�
norm_encoding�aliased_encoding�modnames�modname�modr* � codecaliases�aliasr r r
�search_functionG sf
,, (
r; Zwin32c C sF y,dd l }| |jd�kr*dd l}|jj� S W n tk
r@ Y nX d S )Nr F)� _bootlocale�getpreferredencodingZencodings.mbcs�mbcsr* r) )r r< Z encodingsr r r
� _alias_mbcs� s r? )�__doc__r, �sysr r r" r$ r( r% � LookupError� SystemErrorr r r; �register�platformr? r r r r
� s U