DebugClients/Python3/AsyncIO.py

Tue, 02 Oct 2012 19:53:31 +0200

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Tue, 02 Oct 2012 19:53:31 +0200
changeset 2087
795992a5c561
parent 1509
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child 2302
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permissions
-rw-r--r--

Made the sixth set of Qt5 compatibility changes.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2009 - 2012 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 """
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7 Module implementing a base class of an asynchronous interface for the debugger.
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8 """
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9
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10
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11 class AsyncIO(object):
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12 """
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13 Class implementing asynchronous reading and writing.
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14 """
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15 def __init__(self):
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16 """
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17 Constructor
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18
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19 @param parent the optional parent of this object (QObject) (ignored)
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20 """
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21 # There is no connection yet.
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22 self.disconnect()
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23
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24 def disconnect(self):
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25 """
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26 Public method to disconnect any current connection.
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27 """
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28 self.readfd = None
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29 self.writefd = None
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30
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31 def setDescriptors(self, rfd, wfd):
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32 """
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33 Public method called to set the descriptors for the connection.
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34
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35 @param rfd file descriptor of the input file (int)
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36 @param wfd file descriptor of the output file (int)
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37 """
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38 self.rbuf = ''
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39 self.readfd = rfd
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40
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41 self.wbuf = ''
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42 self.writefd = wfd
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43
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44 def readReady(self, fd):
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45 """
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46 Public method called when there is data ready to be read.
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47
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48 @param fd file descriptor of the file that has data to be read (int)
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49 """
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50 try:
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51 got = self.readfd.readline_p()
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52 except Exception:
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53 return
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54
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55 if len(got) == 0:
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56 self.sessionClose()
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57 return
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58
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59 self.rbuf = self.rbuf + got
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60
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61 # Call handleLine for the line if it is complete.
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62 eol = self.rbuf.find('\n')
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63
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64 while eol >= 0:
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65 s = self.rbuf[:eol + 1]
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66 self.rbuf = self.rbuf[eol + 1:]
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67 self.handleLine(s)
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68 eol = self.rbuf.find('\n')
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69
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70 def writeReady(self, fd):
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71 """
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72 Public method called when we are ready to write data.
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73
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74 @param fd file descriptor of the file that has data to be written (int)
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75 """
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76 self.writefd.write(self.wbuf)
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77 self.writefd.flush()
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78 self.wbuf = ''
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79
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80 def write(self, s):
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81 """
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82 Public method to write a string.
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83
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84 @param s the data to be written (string)
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85 """
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86 self.wbuf = self.wbuf + s

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