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#! /usr/bin/python
# -*- coding: UTF-8 -*-
"""
Copyright (C) 2005-07 Adolfo González Blázquez <code@infinicode.org>
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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
If you find any bugs or have any suggestions email: code@infinicode.org
"""
import pygtk
pygtk.require("2.0")
import gtk
import os
import camglobals
home = os.getenv("HOME")
pidfile = '.cameramonitor.pid'
path = os.path.join(home, pidfile)
# Check if another instance is running
def pid_check():
if os.path.isfile(path):
try:
fd = open(path, 'r')
pid = fd.read()
fd.close()
except IOError:
display_dialog_error("Error reading pidfile!")
if pid_running(pid):
display_dialog_error("Another instance of Camera Monitor is already running!")
return True
else:
#display_dialog_warning("Camera Monitor didn't exit properly last time!")
os.remove(path)
return False
else: return False
# Check if the process with pid is running
def pid_running(pid):
return os.path.isdir('/proc/'+pid)
# Saves the pidfile
def pid_save():
pid = os.getpid()
if os.path.isfile(path):
display_dialog_error("Another instance of Camera Monitor is already running")
else:
try:
fd = open(path, "w")
fd.write(`pid`)
fd.close()
except IOError:
display_dialog_error("Error writing pidfile!")
# Saves the pidfile
def pid_read():
if not os.path.isfile(path):
return "0"
else:
try:
fd = open(path, "r")
pid = fd.read()
fd.close()
except IOError:
display_dialog_error("Error reading pidfile!")
return pid
# Cleans pidfile on exit
def pid_clean():
if os.path.isfile(path):
os.remove(path)
else:
#display_dialog_error("Pidfile doesn't exit!")
pass
# Display a dialog error
def display_dialog_error(text):
dialog = gtk.MessageDialog(None, 0, gtk.MESSAGE_ERROR, gtk.BUTTONS_OK, text)
dialog.run()
dialog.destroy()
# Display a dialog warning
def display_dialog_warning(text):
dialog = gtk.MessageDialog(None, 0, gtk.MESSAGE_WARNING, gtk.BUTTONS_OK, text)
dialog.run()
dialog.destroy()
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