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# This file is part of the Frescobaldi project, http://www.frescobaldi.org/
#
# Copyright (c) 2008, 2009, 2010 by Wilbert Berendsen
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
# See http://www.gnu.org/licenses/ for more information.
"""
Runs a program within a PTY.
Some ideas were taken from the pty module, but I don't want
to connect stderr and I implement some signal handling.
"""
import sys, os, tty, pty, signal, select, subprocess
STDIN, STDOUT = 0, 1
master, slave = pty.openpty()
p = subprocess.Popen(sys.argv[1:],
stdin = slave, stdout = STDOUT, close_fds = True)
def terminate(signalnum, frame):
os.kill(p.pid, signalnum)
signal.signal(signal.SIGINT, terminate)
signal.signal(signal.SIGTERM, terminate)
try:
mode = tty.tcgetattr(STDIN)
tty.setraw(STDIN)
restore = 1
except tty.error:
restore = 0
while p.poll() is None:
try:
fds = select.select([STDIN], [], [], 0.5)[0]
except select.error:
pass
else:
if STDIN in fds:
data = os.read(STDIN, 1024)
while data:
n = os.write(master, data)
data = data[n:]
if restore:
tty.tcsetattr(STDIN, tty.TCSAFLUSH, mode)
os.close(master)
sys.exit(p.poll())
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