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# Copyright 2000-2004 Michael Hudson-Doyle <micahel@gmail.com>
#
# All Rights Reserved
#
#
# Permission to use, copy, modify, and distribute this software and
# its documentation for any purpose is hereby granted without fee,
# provided that the above copyright notice appear in all copies and
# that both that copyright notice and this permission notice appear in
# supporting documentation.
#
# THE AUTHOR MICHAEL HUDSON DISCLAIMS ALL WARRANTIES WITH REGARD TO
# THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS, IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL,
# INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
# RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
# CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
import termios
class TermState:
def __init__(self, tuples):
(
self.iflag,
self.oflag,
self.cflag,
self.lflag,
self.ispeed,
self.ospeed,
self.cc,
) = tuples
def as_list(self):
return [
self.iflag,
self.oflag,
self.cflag,
self.lflag,
self.ispeed,
self.ospeed,
# Always return a copy of the control characters list to ensure
# there are not any additional references to self.cc
self.cc[:],
]
def copy(self):
return self.__class__(self.as_list())
def tcgetattr(fd):
return TermState(termios.tcgetattr(fd))
def tcsetattr(fd, when, attrs):
termios.tcsetattr(fd, when, attrs.as_list())
class Term(TermState):
TS__init__ = TermState.__init__
def __init__(self, fd=0):
self.TS__init__(termios.tcgetattr(fd))
self.fd = fd
self.stack = []
def save(self):
self.stack.append(self.as_list())
def set(self, when=termios.TCSANOW):
termios.tcsetattr(self.fd, when, self.as_list())
def restore(self):
self.TS__init__(self.stack.pop())
self.set()