Xï ddZddlmZddlmZGddej ZGddZdZy ) aA 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. )deque)asyncoreceZdZdZdZdZdZdZddZdZ dZ d Z d Z d Z d Zd ZdZdZdZdZdZdZdZdZdZy) async_chatzThis is an abstract class. You must derive from this class, and add the two methods collect_incoming_data() and found_terminator()irzlatin-1Ncd|_g|_t|_tj j |||yN) ac_in_bufferincomingr producer_fifor dispatcher__init__)selfsockmaps  99T334D dC T%6%6dmm,D --4T&&'B,,.J**4+<+<=$'!J,6..t/@/@A(+D%&*oo&:DO..t/@/@!/DE(,(9(9!"(=D%&'DO))+"%Z))..z:B;qy2243D3DVe3LM(,(9(9%:N:O(PD%))+/t/@/@*ME B; 66t7H7H5&7QR040A0A5&'0JD-2243D3DE,/)g         sI I8I87I8c$|jyr) initiate_sendr$s r handle_writezasync_chat.handle_writes r c$|jyr)closer$s r handle_closezasync_chat.handle_closes  r cht|tttfst dt ||j }t||kDr=tdt||D]#}|jj||||z%n|jj||jy)Nz#data argument must be byte-ish (%r)r) r'r* bytearray memoryview TypeErrortypeac_out_buffer_sizer:ranger rrC)rrsabsis rpushzasync_chat.pushs$ : >?A J( (&& t9t 1c$i.""))$q4.9/    % %d + r cZ|jj||jyr)r rrC)rproducers rpush_with_producerzasync_chat.push_with_producers" !!(+ r cy)z4predicate for inclusion in the readable for select()r$s rreadablezasync_chat.readables r c8|jxs |j S)z4predicate for inclusion in the writable for select())r connectedr$s rwritablezasync_chat.writables!!9$..&89r c:|jjdy)zAautomatically close this channel once the outgoing queue is emptyN)r rr$s rclose_when_donezasync_chat.close_when_dones !!$'r c|jr|jr|jd}|s |jd=||jy|j} |d|}t|tr"|jrt||j} |j|}|r<|t|ks|t|kr||d|jd<y|jd=yyy#t$r?|j }|r|jj |n |jd=Y'wxYw#t$r|jYywxYw)Nr)r rZrGrMrKmore appendleftr'r(r)r*r+sendr8r9r:)rfirstobsrnum_sents rrCzasync_chat.initiate_sendsP  T^^&&q)E&&q)=%%'))C Tc{$$):):T4==1 99T? c$i'3U+;,1(),D,, ,YY0 0 01F $"2"2"34DIMYYFDIMr N)i)rhrirjrr_rWr rrmrms 'r rmct|dz }|r0|j|d|s|dz}|r|j|d|s|S)NrV)r:endswith)haystackneedlels rr<r<6sK F aA H%%fRaj1 Q H%%fRaj1 Hr N) rk collectionsr test.supportrr rrmr<rWr rrys8B*!X#$$X#v@ r