Mercurial Repositories > eric / file comparison
comparison: DebugClients/Python/AsyncIO.py
DebugClients/Python/AsyncIO.py
- changeset 5141
- bc64243b7672
- parent 5126
- d28b92dabc2b
- parent 5140
- 01484c0afbc6
- child 5144
- 1ab536d25072
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| 5126:d28b92dabc2b | 5141:bc64243b7672 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2002 - 2016 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing a base class of an asynchronous interface for the debugger. | |
| 8 """ | |
| 9 | |
| 10 | |
| 11 class AsyncIO(object): | |
| 12 """ | |
| 13 Class implementing asynchronous reading and writing. | |
| 14 """ | |
| 15 def __init__(self): | |
| 16 """ | |
| 17 Constructor | |
| 18 """ | |
| 19 # There is no connection yet. | |
| 20 self.disconnect() | |
| 21 | |
| 22 def disconnect(self): | |
| 23 """ | |
| 24 Public method to disconnect any current connection. | |
| 25 """ | |
| 26 self.readfd = None | |
| 27 self.writefd = None | |
| 28 | |
| 29 def setDescriptors(self, rfd, wfd): | |
| 30 """ | |
| 31 Public method called to set the descriptors for the connection. | |
| 32 | |
| 33 @param rfd file descriptor of the input file (int) | |
| 34 @param wfd file descriptor of the output file (int) | |
| 35 """ | |
| 36 self.rbuf = '' | |
| 37 self.readfd = rfd | |
| 38 | |
| 39 self.wbuf = '' | |
| 40 self.writefd = wfd | |
| 41 | |
| 42 def readReady(self, fd): | |
| 43 """ | |
| 44 Public method called when there is data ready to be read. | |
| 45 | |
| 46 @param fd file descriptor of the file that has data to be read (int) | |
| 47 """ | |
| 48 try: | |
| 49 got = self.readfd.readline_p() | |
| 50 except Exception: | |
| 51 return | |
| 52 | |
| 53 if len(got) == 0: | |
| 54 self.sessionClose() | |
| 55 return | |
| 56 | |
| 57 self.rbuf = self.rbuf + got | |
| 58 | |
| 59 # Call handleLine for the line if it is complete. | |
| 60 eol = self.rbuf.find('\n') | |
| 61 | |
| 62 while eol >= 0: | |
| 63 s = self.rbuf[:eol + 1] | |
| 64 self.rbuf = self.rbuf[eol + 1:] | |
| 65 self.handleLine(s) | |
| 66 eol = self.rbuf.find('\n') | |
| 67 | |
| 68 def writeReady(self, fd): | |
| 69 """ | |
| 70 Public method called when we are ready to write data. | |
| 71 | |
| 72 @param fd file descriptor of the file that has data to be written (int) | |
| 73 """ | |
| 74 self.writefd.write(self.wbuf) | |
| 75 self.writefd.flush() | |
| 76 self.wbuf = '' | |
| 77 | |
| 78 def write(self, s): | |
| 79 """ | |
| 80 Public method to write a string. | |
| 81 | |
| 82 @param s the data to be written (string) | |
| 83 """ | |
| 84 self.wbuf = self.wbuf + s | |
| 85 | |
| 86 # | |
| 87 # eflag: FileType = Python2 | |
| 88 # eflag: noqa = M601, M702 |
