auto-rotate.py

#!/usr/bin/python
##
## auto-rotate.py
## Karol Krizka <kkrizka@gmail.com>
## Started on  Sat Jun 14 16:05:48 2008 Karol Krizka
## $Id$
## 
## Copyright (C) 2008 Karol Krizka
## 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##

from librotate import AutoRotateDaemon

import os,time,re,sys,stat;
import xrandr
import optparse

import dbus
import dbus.service
import dbus.mainloop.glib

def main():
    # Initialize possible options
    usage = "usage: %prog [options]"
    options_parser=optparse.OptionParser(usage=usage)

    options_parser.add_option("-d","--daemon",action='store_true',dest="daemon",help="fork and run as a daemon");
    (options,args)=options_parser.parse_args();

    # Fork into a new process if daemon switch is present
    if(options.daemon):
        if(os.fork()==0):
            # Decouple new process from the parent
            os.chdir('/');
            os.setsid();
            os.umask(0);
        else:
            # End the parent process
            return;

    # Setup DBus connection for remote control
    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)

    system_bus = dbus.SystemBus()

    system_services = system_bus.list_names()
    if(not "net.krizka.autorotate" in system_services): # Don't bother starting several instances of the autorotate daemon
        busname = dbus.service.BusName("net.krizka.autorotate",system_bus);
        
        autorotate=AutoRotateDaemon.AutoRotateDaemon(system_bus,"/rotate")
        
        autorotate.start()
        

main()