openlp/openlp/__main__.py

80 lines
3.0 KiB
Python

# -*- coding: utf-8 -*-
##########################################################################
# OpenLP - Open Source Lyrics Projection #
# ---------------------------------------------------------------------- #
# Copyright (c) 2008-2022 OpenLP Developers #
# ---------------------------------------------------------------------- #
# 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 3 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, see <https://www.gnu.org/licenses/>. #
##########################################################################
"""
The entrypoint for OpenLP
"""
import atexit
import faulthandler
import logging
import multiprocessing
# from OpenGL import GL # noqa
from openlp.core.app import main
from openlp.core.common import is_win
from openlp.core.common.applocation import AppLocation
from openlp.core.common.path import create_paths
log = logging.getLogger(__name__)
error_log_file = None
def tear_down_fault_handling():
"""
When Python exits, close the file we were using for the faulthandler
"""
global error_log_file
error_log_file.close()
def set_up_fault_handling():
"""
Set up the Python fault handler
"""
global error_log_file
# Create the cache directory if it doesn't exist, and enable the fault handler to log to an error log file
try:
create_paths(AppLocation.get_directory(AppLocation.CacheDir))
error_log_file = (AppLocation.get_directory(AppLocation.CacheDir) / 'error.log').open('wb')
atexit.register(tear_down_fault_handling)
faulthandler.enable(error_log_file)
except OSError:
log.exception('An exception occurred when enabling the fault handler')
atexit.unregister(tear_down_fault_handling)
if error_log_file:
error_log_file.close()
def start():
"""
Instantiate and run the application.
"""
set_up_fault_handling()
# Add support for using multiprocessing from frozen Windows executable (built using PyInstaller),
# see https://docs.python.org/3/library/multiprocessing.html#multiprocessing.freeze_support
if is_win():
multiprocessing.freeze_support()
main()
if __name__ == '__main__':
start()