Editing: asynchat.pyc
� z fc @ s� d Z d d l Z d d l Z d d l Z d d l m Z d d l m Z d d l m Z m Z e j e j e j e j f Z d e j f d � � YZ d d d � � YZ d d d � � YZ d � Z d S( s� 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. i����N( t deque( t py3kwarning( t filterwarningst catch_warningst async_chatc B s� e Z d Z d Z d Z d d d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z RS( s� This is an abstract class. You must derive from this class, and add the two methods collect_incoming_data() and found_terminator()i c C s8 d | _ g | _ t � | _ t j j | | | � d S( Nt ( t ac_in_buffert incomingR t producer_fifot asyncoret dispatchert __init__( t selft sockt map( ( s /usr/lib64/python2.7/asynchat.pyR E s c C s t d � � d S( Ns must be implemented in subclass( t NotImplementedError( R t data( ( s /usr/lib64/python2.7/asynchat.pyt collect_incoming_dataV s c C s | j j | � d S( N( R t append( R R ( ( s /usr/lib64/python2.7/asynchat.pyt _collect_incoming_dataY s c C s d j | j � } | j 2| S( NR ( t joinR ( R t d( ( s /usr/lib64/python2.7/asynchat.pyt _get_data\ s c C s t d � � d S( Ns must be implemented in subclass( R ( R ( ( s /usr/lib64/python2.7/asynchat.pyt found_terminatora s c C s | | _ d S( sR Set the input delimiter. Can be a fixed string of any length, an integer, or NoneN( t terminator( R t term( ( s /usr/lib64/python2.7/asynchat.pyt set_terminatord s c C s | j S( N( R ( R ( ( s /usr/lib64/python2.7/asynchat.pyt get_terminatorh s c C s y | j | j � } Wn8 t j k rP } | j d t k rB d S| j � d SX| j | | _ x�| j rt | j � } | j � } | s� | j | j � d | _ qd t | t t f � r7| } | | k r� | j | j � d | _ | j | | _ q| j | j | � | j | | _ d | _ | j � qd t | � } | j j | � } | d k r�| d k r�| j | j | � n | j | | | _ | j � qd t | j | � } | r�| | k r�| j | j | � | j | | _ n Pqd | j | j � d | _ qd Wd S( Ni R i����( t recvt ac_in_buffer_sizet sockett errort argst _BLOCKING_IO_ERRORSt handle_errorR t lenR R t isinstancet intt longR R t findt find_prefix_at_end( R R t whyt lbR t nt terminator_lent index( ( s /usr/lib64/python2.7/asynchat.pyt handle_readp sN c C s | j � d S( N( t initiate_send( R ( ( s /usr/lib64/python2.7/asynchat.pyt handle_write� s c C s | j � d S( N( t close( R ( ( s /usr/lib64/python2.7/asynchat.pyt handle_close� s c C sz | j } t | � | k r\ xN t d t | � | � D]! } | j j | | | | !� q4 Wn | j j | � | j � d S( Ni ( t ac_out_buffer_sizeR# t xrangeR R R/ ( R R t sabst i( ( s /usr/lib64/python2.7/asynchat.pyt push� s "c C s | j j | � | j � d S( N( R R R/ ( R t producer( ( s /usr/lib64/python2.7/asynchat.pyt push_with_producer� s c C s d S( s4 predicate for inclusion in the readable for select()i ( ( R ( ( s /usr/lib64/python2.7/asynchat.pyt readable� s c C s | j p | j S( s4 predicate for inclusion in the writable for select()( R t connected( R ( ( s /usr/lib64/python2.7/asynchat.pyt writable� s c C s | j j d � d S( sA automatically close this channel once the outgoing queue is emptyN( R R t None( R ( ( s /usr/lib64/python2.7/asynchat.pyt close_when_done� s c C sf x_| j ra| j ra| j d } | sO | j d =| d k rO | j � d Sn | j } y? t � �0 t r~ t d d t � n t | d | � } Wd QXWnC t k r� | j � } | r� | j j | � q | j d =q n Xy | j | � } Wn t j k r| j � d SX| r]| t | � k s<| t | � k rP| | | j d <q]| j d =n d SWd S( Ni t ignores .*buffer( R R; R= R2 R3 R R R t DeprecationWarningt buffert TypeErrort moret appendleftt sendR R R" R# ( R t firstt obsR t num_sent( ( s /usr/lib64/python2.7/asynchat.pyR/ � s: $ c C s! d | _ | j 2| j j � d S( NR ( R R R t clear( R ( ( s /usr/lib64/python2.7/asynchat.pyt discard_buffers� s N( t __name__t __module__t __doc__R R3 R= R R R R R R R R. R0 R2 R7 R9 R: R< R> R/ RJ ( ( ( s /usr/lib64/python2.7/asynchat.pyR < s( D (t simple_producerc B s e Z d d � Z d � Z RS( i c C s | | _ | | _ d S( N( R t buffer_size( R R RO ( ( s /usr/lib64/python2.7/asynchat.pyR s c C sY t | j � | j k r? | j | j } | j | j | _ | S| j } d | _ | Sd S( NR ( R# R RO ( R t result( ( s /usr/lib64/python2.7/asynchat.pyRC s ( RK RL R RC ( ( ( s /usr/lib64/python2.7/asynchat.pyRN s t fifoc B sA e Z d d � Z d � Z d � Z d � Z d � Z d � Z RS( c C s( | s t � | _ n t | � | _ d S( N( R t list( R RR ( ( s /usr/lib64/python2.7/asynchat.pyR s c C s t | j � S( N( R# RR ( R ( ( s /usr/lib64/python2.7/asynchat.pyt __len__ s c C s | j S( N( RR ( R ( ( s /usr/lib64/python2.7/asynchat.pyt is_empty s c C s | j d S( Ni ( RR ( R ( ( s /usr/lib64/python2.7/asynchat.pyRF " s c C s | j j | � d S( N( RR R ( R R ( ( s /usr/lib64/python2.7/asynchat.pyR7 % s c C s$ | j r d | j j � f Sd Sd S( Ni i ( i N( RR t popleftR= ( R ( ( s /usr/lib64/python2.7/asynchat.pyt pop( s N( RK RL R= R RS RT RF R7 RV ( ( ( s /usr/lib64/python2.7/asynchat.pyRQ s c C s? t | � d } x( | r: | j | | � r: | d 8} q W| S( Ni ( R# t endswith( t haystackt needlet l( ( s /usr/lib64/python2.7/asynchat.pyR( = s ( ( ( RM R t errnoR t collectionsR t sysR t warningsR R t EAGAINt EALREADYt EINPROGRESSt EWOULDBLOCKR! R R RN RQ R( ( ( ( s /usr/lib64/python2.7/asynchat.pyt <module>/ s �(
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