B
f% @ st d Z ddlZdddZdddZG dd d ejZG d
d d ejZG d d
d
ejZG dd dejZdd 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.
Nstrictc C s t jt | |d t| fS )Nr )codecsBOM_UTF8 utf_8_encodelen)inputerrors r 8/opt/alt/python37/lib64/python3.7/encodings/utf_8_sig.pyencode s r c C sD d}| d d t jkr&| dd } d}t | |d\}}||| fS )Nr T)r r utf_8_decode)r r prefixoutputconsumedr r r
decode s r c @ s8 e Zd ZdddZdddZdd Zd d
Zd d Zd
S )IncrementalEncoderr c C s t j| | d| _d S )N )r r __init__first)selfr r r r
r s zIncrementalEncoder.__init__Fc C s: | j r$d| _ tjt|| jd S t|| jd S d S )Nr )r r r r r )r r finalr r r
r s
zIncrementalEncoder.encodec C s t j| d| _d S )Nr )r r resetr )r r r r
r ' s zIncrementalEncoder.resetc C s | j S )N)r )r r r r
getstate+ s zIncrementalEncoder.getstatec C s
|| _ d S )N)r )r stater r r
setstate. s zIncrementalEncoder.setstateN)r )F)__name__
__module__ __qualname__r r r r r r r r r
r s
r c @ s6 e Zd Zd
ddZdd Zdd Zdd Zd
d Zd S )IncrementalDecoderr c C s t j| | d| _d S )Nr )r BufferedIncrementalDecoderr r )r r r r r
r 2 s zIncrementalDecoder.__init__c C sv | j rht|dk r*tj|r"dS d| _ n>d| _ |d d tjkrht|dd ||\}}||d fS t|||S )Nr ) r r )r r r r
startswithr
)r r r r r r r r r
_buffer_decode6 s z!IncrementalDecoder._buffer_decodec C s t j| d| _d S )Nr )r r r r )r r r r
r G s zIncrementalDecoder.resetc C s t j| }|d | jfS )Nr )r r r r )r r r r r
r K s zIncrementalDecoder.getstatec C s t j| | |d | _d S )Nr )r r r r )r r r r r
r P s zIncrementalDecoder.setstateN)r )r r r r r# r r r r r r r
r 1 s
r c @ s e Zd Zdd ZdddZdS ) StreamWriterc C s. t j| y| `W n tk
r( Y nX d S )N)r r$ 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 ZdddZdS ) StreamReaderc C s. t j| 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 tj|r\dS n>|d d tjkr\tj| _t|dd |\}}||d fS tj| _t||S )Nr )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 jdttttttdS )Nz utf-8-sig)namer r incrementalencoderincrementaldecoder 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