input-remapper/keymapper/data.py
2020-12-04 17:38:04 +01:00

90 lines
2.9 KiB
Python

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# key-mapper - GUI for device specific keyboard mappings
# Copyright (C) 2020 sezanzeb <proxima@hip70890b.de>
#
# This file is part of key-mapper.
#
# key-mapper 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.
#
# key-mapper 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 key-mapper. If not, see <https://www.gnu.org/licenses/>.
"""Get stuff from /usr/share/key-mapper, depending on the prefix."""
import sys
import os
import site
import pkg_resources
from keymapper.logger import logger
logged = False
def get_data_path(filename=''):
"""Depending on the installation prefix, return the data dir.
Since it is a nightmare to get stuff installed with pip across
distros this is somewhat complicated. Ubuntu wants to use /usr/local
for data_files, but not everything can be placed there.
"""
global logged
source_path = None
try:
source_path = pkg_resources.require('key-mapper')[0].location
# failed in some ubuntu installations
except pkg_resources.DistributionNotFound:
pass
# depending on where this file is installed to, make sure to use the proper
# prefix path for data
# https://docs.python.org/3/distutils/setupscript.html?highlight=package_data#installing-additional-files # noqa pylint: disable=line-too-long
data_path = None
# python3.8/dist-packages python3.7/site-packages, /usr/share,
# /usr/local/share, endless options
if source_path is not None:
if '-packages' not in source_path and 'python' not in source_path:
# probably installed with -e, running from the cloned git source
data_path = os.path.join(source_path, 'data')
if not os.path.exists(data_path):
if not logged:
logger.debug('-e, but data missing at "%s"', data_path)
data_path = None
candidates = [
'/usr/share/key-mapper',
'/usr/local/share/key-mapper',
os.path.join(site.USER_BASE, 'share/key-mapper'),
]
if data_path is None:
# try any of the options
for candidate in candidates:
if os.path.exists(candidate):
data_path = candidate
break
if data_path is None:
logger.error('Could not find the application data')
sys.exit(1)
if not logged:
logger.debug('Found data at "%s"', data_path)
logged = True
return os.path.join(data_path, filename)