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Path : /usr/lib/python/ |
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Current File : //usr/lib/python/asynchat.pyo |
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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.
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„ 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 ƒ | _ t i i | | | ƒ d S( Nt ( t ac_in_buffert incomingR t
producer_fifot asyncoret
dispatchert __init__( t selft sockt map( ( s /usr/lib/python2.6/asynchat.pyR @ s c C s t d ƒ ‚ d S( Ns must be implemented in subclass( t NotImplementedError( R t data( ( s /usr/lib/python2.6/asynchat.pyt collect_incoming_dataQ s c C s | i i | ƒ d S( N( R t append( R R ( ( s /usr/lib/python2.6/asynchat.pyt _collect_incoming_dataT s c C s d i | i ƒ } | i 2| S( NR ( t joinR ( R t d( ( s /usr/lib/python2.6/asynchat.pyt _get_dataW s c C s t d ƒ ‚ d S( Ns must be implemented in subclass( R ( R ( ( s /usr/lib/python2.6/asynchat.pyt found_terminator\ s c C s
| | _ d S( sR Set the input delimiter. Can be a fixed string of any length, an integer, or NoneN( t
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