Files
pyfa/service/jargon/loader.py
2019-07-07 02:33:54 +03:00

86 lines
2.9 KiB
Python

# =============================================================================
# Copyright (C) 2018 Filip Sufitchi
#
# This file is part of pyfa.
#
# pyfa 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.
#
# pyfa 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 pyfa. If not, see <http://www.gnu.org/licenses/>.
# =============================================================================
import os
import config
import yaml
from .jargon import Jargon
from .resources import DEFAULT_DATA, DEFAULT_HEADER
JARGON_PATH = os.path.join(config.savePath, 'jargon.yaml')
class JargonLoader:
def __init__(self, jargon_path: str):
self.jargon_path = jargon_path
self._jargon_mtime = 0 # type: int
self._jargon = None # type: Jargon
def get_jargon(self) -> Jargon:
if self._is_stale():
self._load_jargon()
return self._jargon
def _is_stale(self):
return (not self._jargon or not self._jargon_mtime or
self.jargon_mtime != self._get_jargon_file_mtime())
def _load_jargon(self):
jargondata = yaml.load(DEFAULT_DATA, Loader=yaml.SafeLoader)
with open(JARGON_PATH) as f:
userdata = yaml.load(f, Loader=yaml.SafeLoader)
jargondata.update(userdata)
self.jargon_mtime = self._get_jargon_file_mtime()
self._jargon = Jargon(jargondata)
def _get_jargon_file_mtime(self) -> int:
if not os.path.exists(self.jargon_path):
return 0
return os.stat(self.jargon_path).st_mtime
@staticmethod
def init_user_jargon(jargon_path):
values = yaml.load(DEFAULT_DATA, Loader=yaml.SafeLoader)
# Disabled for issue/1533; do not overwrite existing user config
# if os.path.exists(jargon_path):
# with open(jargon_path) as f:
# custom_values = yaml.load(f)
# if custom_values:
# values.update(custom_values)
if not os.path.exists(jargon_path):
with open(jargon_path, 'w') as f:
f.write(DEFAULT_HEADER)
f.write('\n\n')
yaml.dump(values, stream=f, default_flow_style=False)
_instance = None
@staticmethod
def instance(jargon_path=None):
if not JargonLoader._instance:
jargon_path = jargon_path or JARGON_PATH
JargonLoader._instance = JargonLoader(jargon_path)
return JargonLoader._instance
JargonLoader.init_user_jargon(JARGON_PATH)