105 lines
3.7 KiB
Python
105 lines
3.7 KiB
Python
#!/usr/bin/env python
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#
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# Really Simple BBS - a really simple BBS for ax.25 packet radio.
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# Copyright (C) 2023 John Burwell <john@atatdotdot.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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import os
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import pkg_resources
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import platformdirs
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import yaml
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class Config():
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def __init__(self, app_name, args):
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self.app_name = app_name
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self._argv_config_file = args.config_file
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self._init_config_file()
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self._load_config()
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# Put the messages db file in the system's user data directory
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self._config['db_path'] = os.path.join(
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platformdirs.user_data_dir(
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appname=self.app_name,
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ensure_exists=True),
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'messages.db')
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# Grab some config from the command line for convenience
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self._config['args'] = args
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self._config['calling_station'] = args.calling_station.upper() or None
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self._config['debug'] = args.debug
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# The main thing people want from Config is config values, so let's pretend
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# everything anyone asks of Config that isn't otherwise defined is probably
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# a config value they want
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def __getattr__(self, __name: str):
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return self._config[__name]
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# Handle requests to access this thing as a dict:
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def __dict__(self):
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return self._config
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# Format the config as yaml for display
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def __repr__(self):
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repr = []
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repr.append(f"app_name: {self.app_name}\r\n")
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repr.append(f"config_file: {self.config_file}\r\n")
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repr.append(yaml.dump(self._config))
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return ''.join(repr)
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@property
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def config_file(self):
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# Use either the specified file or a file in a system config location
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config_file = self._argv_config_file or os.path.join(
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platformdirs.user_config_dir(
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appname=self.app_name,
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ensure_exists=True),
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'config.yaml'
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)
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return config_file
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def _init_config_file(self):
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# If the file doesn't exist there, create it from the default file
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# included in the package
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if not os.path.exists(self.config_file):
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config_default_file = pkg_resources.resource_filename(
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__name__,
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'config_default.yaml')
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try:
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with open(config_default_file, 'r') as f:
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config_default = yaml.load(f, Loader=yaml.FullLoader)
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with open(self.config_file, 'w') as f:
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yaml.dump(config_default, f)
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except Exception as e:
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print(f"Error creating configuration file: {e}")
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exit(1)
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def _load_config(self):
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"""Load configuration file.
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If a config file is specified, attempt to use that. Otherwise, use a
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file in the location appropriate to the host system. Create the file
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if it does not exist, using the config_default.yaml as a default.
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"""
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# Load it
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try:
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with open(self.config_file, 'r') as f:
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self._config = yaml.load(f, Loader=yaml.FullLoader)
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except Exception as e:
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print(f"Error loading configuration file: {e}")
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exit(1)
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