AlkantarClanX12
Your IP : 3.15.143.18
B
� f@, � @ sD d Z ddlZddlmZ G dd� dej�ZG dd� d�Zdd � ZdS )
a� A class supporting chat-style (command/response) protocols.
This class adds support for 'chat' style protocols - where one side
sends a 'command', and the other sends a response (examples would be
the common internet protocols - smtp, nntp, ftp, etc..).
The handle_read() method looks at the input stream for the current
'terminator' (usually '\r\n' for single-line responses, '\r\n.\r\n'
for multi-line output), calling self.found_terminator() on its
receipt.
for example:
Say you build an async nntp client using this class. At the start
of the connection, you'll have self.terminator set to '\r\n', in
order to process the single-line greeting. Just before issuing a
'LIST' command you'll set it to '\r\n.\r\n'. The output of the LIST
command will be accumulated (using your own 'collect_incoming_data'
method) up to the terminator, and then control will be returned to
you - by calling your self.found_terminator() method.
� N)�dequec @ s� e Zd ZdZdZdZdZdZd(dd�Zdd � Z d
d � Z
d d
� Z dd� Z dd� Z
dd� Zdd� Zdd� Zdd� Zdd� Zd d � Zd d � Zd d!� Zd"d#� Zd$d%� Zd&d'� ZdS ))�
async_chatz�This is an abstract class. You must derive from this class, and add
the two methods collect_incoming_data() and found_terminator()i r zlatin-1Nc C s( d| _ g | _t� | _tj�| ||� d S )N� )� ac_in_buffer�incomingr �
producer_fifo�asyncore�
dispatcher�__init__)�selfZsock�map� r
�-/opt/alt/python37/lib64/python3.7/asynchat.pyr
C s zasync_chat.__init__c C s t d��d S )Nz must be implemented in subclass)�NotImplementedError)r �datar
r
r �collect_incoming_dataQ s z async_chat.collect_incoming_datac C s | j �|� d S )N)r �append)r r r
r
r �_collect_incoming_dataT s z!async_chat._collect_incoming_datac C s d� | j�}| jd d �= |S )Nr )�joinr )r �dr
r
r � _get_dataW s zasync_chat._get_datac C s t d��d S )Nz must be implemented in subclass)r )r r
r
r �found_terminator\ s zasync_chat.found_terminatorc C sB t |t�r | jr t|| j�}nt |t�r8|dk r8td��|| _dS )zdSet the input delimiter.
Can be a fixed string of any length, an integer, or None.
r z-the number of received bytes must be positiveN)�
isinstance�str� use_encoding�bytes�encoding�int�
ValueError�
terminator)r Ztermr
r
r �set_terminator_ s
zasync_chat.set_terminatorc C s | j S )N)r )r r
r
r �get_terminatorj s zasync_chat.get_terminatorc
C s� y| � | j�}W n< tk
r$ d S tk
rL } z | �� d S d }~X Y nX t|t�rj| jrjtt| j �}| j
| | _
�xV| j
�r�t | j
�}| � � }|s�| �
| j
� d| _
qzt|t��r|}||k r�| �
| j
� d| _
| j| | _n2| �
| j
d |� � | j
|d � | _
d| _| �� qzt |�}| j
�|�}|dk�rr|dk�rT| �
| j
d |� � | j
|| d � | _
| �� qzt| j
|�}|�r�||k�r�| �
| j
d | � � | j
| d � | _
P qz| �
| j
� d| _
qzW d S )Nr r ���)Zrecv�ac_in_buffer_size�BlockingIOError�OSError� handle_errorr r r r r r �lenr! r r r r �find�find_prefix_at_end)r r ZwhyZlbr �nZterminator_len�indexr
r
r � handle_readr sR
zasync_chat.handle_readc C s | � � d S )N)�
initiate_send)r r
r
r � handle_write� s zasync_chat.handle_writec C s | � � d S )N)�close)r r
r
r � handle_close� s zasync_chat.handle_closec C s| t |tttf�s tdt|���| j}t|�|krdx>tdt|�|�D ] }| j �
|||| � � qBW n | j �
|� | � � d S )Nz#data argument must be byte-ish (%r)r ) r r � bytearray�
memoryview� TypeError�type�ac_out_buffer_sizer' �ranger r r- )r r Zsabs�ir
r
r �push� s
zasync_chat.pushc C s | j �|� | �� d S )N)r r r- )r Zproducerr
r
r �push_with_producer� s z async_chat.push_with_producerc C s dS )z4predicate for inclusion in the readable for select()� r
)r r
r
r �readable� s zasync_chat.readablec C s | j p | j S )z4predicate for inclusion in the writable for select())r � connected)r r
r
r �writable� s zasync_chat.writablec C s | j �d� dS )zAautomatically close this channel once the outgoing queue is emptyN)r r )r r
r
r �close_when_done� s zasync_chat.close_when_donec C s �x| j �r| j�r| j d }|s>| j d= |d kr>| �� d S | j}y|d |� }W n8 tk
r� |�� }|r~| j �|� n| j d= wY nX t|t�r�| j r�t
|| j �}y| � |�}W n t
k
r� | �� d S X |�r|t|�k s�|t|�k �r
||d � | j d< n| j d= d S W d S )Nr )r r< r0 r5 r3 �more�
appendleftr r r r r �sendr% r& r' )r �firstZobsr Znum_sentr
r
r r- � s8
zasync_chat.initiate_sendc C s d| _ | jd d �= | j�� d S )Nr )r r r �clear)r r
r
r �discard_buffers s zasync_chat.discard_buffers)NN)�__name__�
__module__� __qualname__�__doc__r# r5 r r r
r r r r r r! r, r. r0 r8 r9 r; r= r> r- rD r
r
r
r r 4 s,
H (r c @ s e Zd Zddd�Zdd� ZdS )�simple_producer� c C s || _ || _d S )N)r � buffer_size)r r rK r
r
r r
s zsimple_producer.__init__c C sJ t | j�| jkr6| jd | j� }| j| jd � | _|S | j}d| _|S d S )Nr )r' r rK )r �resultr
r
r r? s zsimple_producer.moreN)rJ )rE rF rG r
r? r
r
r
r rI s
rI c C s4 t |�d }x"|r.| �|d |� �s.|d8 }qW |S )Nr: )r' �endswith)ZhaystackZneedle�lr
r
r r) / s r) )rH r � collectionsr r r rI r) r
r
r
r �<module>/ s \