3
\% � @ st d Z ddlZddd�Zddd�ZG dd � d ej�ZG d
d � d ej�ZG d d
� d
ej�ZG dd� dej�Zdd� Z dS )a Python 'utf-8-sig' Codec
This work similar to UTF-8 with the following changes:
* On encoding/writing a UTF-8 encoded BOM will be prepended/written as the
first three bytes.
* On decoding/reading if the first three bytes are a UTF-8 encoded BOM, these
bytes will be skipped.
� N�strictc C s t jt j| |�d t| �fS )Nr )�codecs�BOM_UTF8� utf_8_encode�len)�input�errors� r �+/usr/lib64/python3.6/encodings/utf_8_sig.py�encode s r c C sD d}| d d� t jkr&| dd � } d}t j| |d�\}}||| fS )Nr � T)r r � utf_8_decode)r r �prefix�output�consumedr r r
�decode s r c @ s8 e Zd Zddd�Zddd�Zdd� Zd d
� Zd d � Zd
S )�IncrementalEncoderr c C s t jj| |� d| _d S )N� )r r �__init__�first)�selfr r r r
r s zIncrementalEncoder.__init__Fc C s: | j r$d| _ tjtj|| j�d S tj|| j�d S d S )Nr )r r r r r )r r �finalr r r
r s
zIncrementalEncoder.encodec C s t jj| � d| _d S )Nr )r r �resetr )r r r r
r ' s zIncrementalEncoder.resetc C s | j S )N)r )r r r r
�getstate+ s zIncrementalEncoder.getstatec C s
|| _ d S )N)r )r �stater r r
�setstate. s zIncrementalEncoder.setstateN)r )F)�__name__�
__module__� __qualname__r r r r r r r r r
r s
r c @ s6 e Zd Zd
dd�Zdd� Zdd� Zdd � Zd
d � Zd S )�IncrementalDecoderr c C s t jj| |� d| _d S )Nr )r �BufferedIncrementalDecoderr r )r r r r r
r 2 s zIncrementalDecoder.__init__c C sv | j rht|�dk r*tjj|�r"dS d| _ n>d| _ |d d� tjkrhtj|dd � ||�\}}||d fS tj|||�S )Nr � r )r! r )r r r r �
startswithr
)r r r r r r r r r
�_buffer_decode6 s z!IncrementalDecoder._buffer_decodec C s t jj| � d| _d S )Nr )r r r r )r r r r
r G s zIncrementalDecoder.resetc C s t jj| �}|d | jfS )Nr )r r r r )r r r r r
r K s zIncrementalDecoder.getstatec C s t jj| |� |d | _d S )Nr )r r r r )r r r r r
r P s zIncrementalDecoder.setstateN)r )r r r r r# r r r r r r r
r 1 s
r c @ s e Zd Zdd� Zddd�ZdS )� StreamWriterc C s. t jj| � y| `W n tk
r( Y nX d S )N)r r$ r r �AttributeError)r r r r
r V s
zStreamWriter.resetr c C s t j| _t||�S )N)r r r )r r r r r r
r ] s zStreamWriter.encodeN)r )r r r r r r r r r
r$ U s r$ c @ s e Zd Zdd� Zddd�ZdS )� StreamReaderc C s. t jj| � y| `W n tk
r( Y nX d S )N)r r& r r r% )r r r r
r b s
zStreamReader.resetr c C sp t |�dk r tjj|�r\dS n>|d d� tjkr\tj| _tj|dd � |�\}}||d fS tj| _tj||�S )Nr r! r )r! r )r r r r" r
r )r r r r r r r r
r i s zStreamReader.decodeN)r )r r r r r r r r r
r& a s r& c C s t jdttttttd�S )Nz utf-8-sig)�namer r �incrementalencoder�incrementaldecoder� streamreader� streamwriter)r � CodecInfor r r r r& r$ r r r r
� getregentryy s r- )r )r )
�__doc__r r r r r r r$ r& r- r r r r
�<module> s
$