openlp/run_openlp.py

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
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# vim: autoindent shiftwidth=4 expandtab textwidth=120 tabstop=4 softtabstop=4
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##########################################################################
# OpenLP - Open Source Lyrics Projection #
# ---------------------------------------------------------------------- #
# Copyright (c) 2008-2019 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/>. #
##########################################################################
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"""
The entrypoint for OpenLP
"""
import atexit
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import faulthandler
import logging
import multiprocessing
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import sys
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# from OpenGL import GL
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from openlp.core.app import main
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from openlp.core.common import is_macosx, is_win
from openlp.core.common.applocation import AppLocation
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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()
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def set_up_fault_handling():
"""
Set up the Python fault handler
"""
global error_log_file
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# 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.
"""
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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()
# Mac OS X passes arguments like '-psn_XXXX' to the application. This argument is actually a process serial number.
# However, this causes a conflict with other OpenLP arguments. Since we do not use this argument we can delete it
# to avoid any potential conflicts.
if is_macosx():
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sys.argv = [x for x in sys.argv if not x.startswith('-psn')]
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main()
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if __name__ == '__main__':
start()