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# Copyright 2020 Lars Wirzenius
#
# 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 <http://www.gnu.org/licenses/>.
#
# =*= License: GPL-3+ =*=
import importlib.util
import os
class Plugin:
def __init__(self, app):
self.app = app
def find_plugins(dirname, namesuffix):
suffix = "_plugin.py"
filenames = _find_suffixed_files(dirname, suffix)
plugins = []
for filename in filenames:
for c in _classes_in_file(filename, namesuffix):
plugins.append(c)
return plugins
def _find_suffixed_files(dirname, suffix):
return [
os.path.join(dirname, basename)
for basename in os.listdir(dirname)
if basename.endswith(suffix)
]
def _classes_in_file(filename, namesuffix):
module_name = os.path.basename(filename)[: -len(".py")]
spec = importlib.util.spec_from_file_location(module_name, filename)
module = importlib.util.module_from_spec(spec)
spec.loader.exec_module(module)
classes = []
for name in dir(module):
if name.endswith(namesuffix):
classes.append(module.__getattribute__(name))
return classes
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