pys60/pyrepl/pyrepl/fancy_termios.py

   1 #   Copyright 2000-2004 Michael Hudson mwh@python.net
   2 #
   3 #                        All Rights Reserved
   4 #
   5 #
   6 # Permission to use, copy, modify, and distribute this software and
   7 # its documentation for any purpose is hereby granted without fee,
   8 # provided that the above copyright notice appear in all copies and
   9 # that both that copyright notice and this permission notice appear in
  10 # supporting documentation.
  11 #
  12 # THE AUTHOR MICHAEL HUDSON DISCLAIMS ALL WARRANTIES WITH REGARD TO
  13 # THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  14 # AND FITNESS, IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL,
  15 # INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
  16 # RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
  17 # CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  18 # CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20 import termios
  21
  22 class TermState:
  23     def __init__(self, tuples):
  24         self.iflag, self.oflag, self.cflag, self.lflag, \
  25                     self.ispeed, self.ospeed, self.cc = tuples
  26     def as_list(self):
  27         return [self.iflag, self.oflag, self.cflag, self.lflag,
  28                 self.ispeed, self.ospeed, self.cc]
  29
  30     def copy(self):
  31         return self.__class__(self.as_list())
  32
  33 def tcgetattr(fd):
  34     return TermState(termios.tcgetattr(fd))
  35
  36 def tcsetattr(fd, when, attrs):
  37     termios.tcsetattr(fd, when, attrs.as_list())
  38
  39 class Term(TermState):
  40     TS__init__ = TermState.__init__
  41     def __init__(self, fd=0):
  42         self.TS__init__(termios.tcgetattr(fd))
  43         self.fd = fd
  44         self.stack = []
  45     def save(self):
  46         self.stack.append( self.as_list() )
  47     def set(self, when=termios.TCSANOW):
  48         termios.tcsetattr(self.fd, when, self.as_list())
  49     def restore(self):
  50         self.TS__init__(self.stack.pop())
  51         self.set()
  52