diff -r 000000000000 -r de9c2efb9d02 DebugClients/Python/AsyncIO.py
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/DebugClients/Python/AsyncIO.py Mon Dec 28 16:03:33 2009 +0000
@@ -0,0 +1,86 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2002 - 2009 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a base class of an asynchronous interface for the debugger.
+"""
+
+
+class AsyncIO(object):
+ """
+ Class implementing asynchronous reading and writing.
+ """
+ def __init__(self):
+ """
+ Constructor
+
+ @param parent the optional parent of this object (QObject) (ignored)
+ """
+ # There is no connection yet.
+ self.disconnect()
+
+ def disconnect(self):
+ """
+ Public method to disconnect any current connection.
+ """
+ self.readfd = None
+ self.writefd = None
+
+ def setDescriptors(self,rfd,wfd):
+ """
+ Public method called to set the descriptors for the connection.
+
+ @param rfd file descriptor of the input file (int)
+ @param wfd file descriptor of the output file (int)
+ """
+ self.rbuf = ''
+ self.readfd = rfd
+
+ self.wbuf = ''
+ self.writefd = wfd
+
+ def readReady(self,fd):
+ """
+ Public method called when there is data ready to be read.
+
+ @param fd file descriptor of the file that has data to be read (int)
+ """
+ try:
+ got = self.readfd.readline_p()
+ except:
+ return
+
+ if len(got) == 0:
+ self.sessionClose()
+ return
+
+ self.rbuf = self.rbuf + got
+
+ # Call handleLine for the line if it is complete.
+ eol = self.rbuf.find('\n')
+
+ while eol >= 0:
+ s = self.rbuf[:eol + 1]
+ self.rbuf = self.rbuf[eol + 1:]
+ self.handleLine(s)
+ eol = self.rbuf.find('\n')
+
+ def writeReady(self,fd):
+ """
+ Public method called when we are ready to write data.
+
+ @param fd file descriptor of the file that has data to be written (int)
+ """
+ self.writefd.write(self.wbuf)
+ self.writefd.flush()
+ self.wbuf = ''
+
+ def write(self,s):
+ """
+ Public method to write a string.
+
+ @param s the data to be written (string)
+ """
+ self.wbuf = self.wbuf + s
