Source Code for Module coro.frontdoor

 1  # Copyright (c) 2002-2011 IronPort Systems and Cisco Systems 
 2  #  
 3  # Permission is hereby granted, free of charge, to any person obtaining a copy 
 4  # of this software and associated documentation files (the "Software"), to deal 
 5  # in the Software without restriction, including without limitation the rights 
 6  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
 7  # copies of the Software, and to permit persons to whom the Software is 
 8  # furnished to do so, subject to the following conditions: 
 9  #  
10  # The above copyright notice and this permission notice shall be included in 
11  # all copies or substantial portions of the Software. 
12  #  
13  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
14  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
15  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
16  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
17  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
18  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
19  # SOFTWARE. 
20   
21  # -*- Mode: Python -*- 
22   
23  # code is from jesse, thx. 
24   
25  import coro 
26  import termios 
27   
28  # from Python/Lib/tty.py 
29  # Indexes for termios list. 
30  IFLAG = 0 
31  OFLAG = 1 
32  CFLAG = 2 
33  LFLAG = 3 
34  ISPEED = 4 
35  OSPEED = 5 
36  CC = 6 
37   
38 -class stdin (coro.sock): 
39   
40 -    def __init__ (self): 
41          coro.sock.__init__ (self, fd=0) 
42          self.fd = 0 
43          self.old = termios.tcgetattr (self.fd) 
44          #print 'old=%r' % (self.old,) 
45          self.new = termios.tcgetattr (self.fd) 
46          self.new[LFLAG] &= ~(termios.ICANON | termios.ECHO  | termios.IEXTEN) 
47          self.new[IFLAG] &= ~(termios.IGNBRK | termios.IXOFF | termios.IXON) 
48          self.new[CC][termios.VMIN] = 1 
49          self.new[CC][termios.VTIME] = 0 
50          self.new[CC][termios.CINTR] = 254 # block ctrl-c?  doesn't work. 
51          #print 'new=%r' % (self.new,) 
52          termios.tcsetattr (self.fd, termios.TCSANOW, self.new) 
53   
54 -    def __dealloc__ (self): 
55          self.restore() 
56   
57 -    def restore (self): 
58          #print '[restoring stdin to %r]' % (self.old,) 
59          termios.tcsetattr (self.fd, termios.TCSAFLUSH, self.old) 
60   
61 -    def read (self, size): 
62          return self.recv (size) 
63   
64 -    def write (self, data): 
65          return self.send (data) 
66   
67 -    def writelines (self, list): 
68          return self.writev (filter (None, list)) 
69   
70  # to use: 
71  # 
72  # s = stdin() 
73  # while 1: 
74  #     block = s.recv (1024) 
75  # 
76  # be sure to call restore() or your terminal will be hosed. 
77