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# Copyright 2017 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 os
import yaml
class Variables(object):
_basename = 'vars.yaml'
def __init__(self, dirname):
self._filename = os.path.join(dirname, self._basename)
self._dict = self._load()
def _load(self):
if os.path.exists(self._filename):
with open(self._filename) as f:
return yaml.safe_load(f)
else:
return {}
def _save(self, values):
with open(self._filename, 'w') as f:
return yaml.safe_dump(values, stream=f)
def __getitem__(self, key):
return self._dict.get(key)
def __setitem__(self, key, value):
self._dict[key] = value
self._save(self._dict)
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