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ej�Zdd� ZdS )aL Python 'hex' Codec - 2-digit hex with spaces content transfer encoding.
Encode and decode may be a bit missleading at first sight...
The textual representation is a hex dump: e.g. "40 41"
The "encoded" data of this is the binary form, e.g. b"@A"
Therefore decoding is binary to text and thus converting binary data to hex dump.
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hex_encode$ s r c C s& t d�dd� t�| �D ���t| �fS )�b'@ab' -> '40 41 42'� c s s | ]}d � t|��V qdS �z{:02X} N��format�ord�r �br r r � <genexpr>+ s z hex_decode.<locals>.<genexpr>)�unicode�joinr � iterbytesr r r r r �
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d| _ d S r- �r. �r% r r r �reset? s zIncrementalEncoder.resetc C s | j S �Nr0 r1 r r r �getstateB s zIncrementalEncoder.getstatec C s
|| _ d S r3 r0 )r% r. r r r �setstateE s zIncrementalEncoder.setstateFc C s� | j }g }|�� D ]|}|tkrRt�|�}|rD|�||d@ � d}q�d|d> }q|dkrv|rp| jdkrptd��d}q| jdkrtd�|���q|| _ t� |�S ) z� Incremental encode, keep track of digits and emit a byte when a pair
of hex digits is found. The space is optional unless the error
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zIncrementalEncoder.encodeN)r )F) r) r* r+ �__doc__r/ r2 r4 r5 r& r r r r r, 8 s
r, c @ s e Zd ZdZddd�ZdS )�IncrementalDecoderzIncremental decoderFc C s t d�dd� t�|�D ���S )Nr c s s | ]}d � t|��V qdS r r r r r r r f s z,IncrementalDecoder.decode.<locals>.<genexpr>r' )r% r r? r r r r( e s zIncrementalDecoder.decodeN)F)r) r* r+ rB r( r r r r rC c s rC c @ s e Zd ZdZdS )� StreamWriterz-Combination of hexlify codec and StreamWriterN�r) r* r+ rB r r r r rD i s rD c @ s e Zd ZdZdS )� StreamReaderz-Combination of hexlify codec and StreamReaderNrE r r r r rF m s rF c C s t jdttttttd�S )zencodings module APIZhexlify)�namer& r( �incrementalencoder�incrementaldecoder� streamwriter� streamreader)�codecs� CodecInfor r" r, rC rD rF r r r r � getregentryq s �rN )r )r )rB rL r r � NameError�AttributeError�strr; r r" r# r, rC rD rF rN r r r r �<module> s
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