65 lines
2.1 KiB
Python
65 lines
2.1 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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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 argparse
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# We want to override the error and exit methods of ArgumentParser
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# to prevent it exiting unexpectedly or spewing error data over the air
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class BBSArgumentParser(argparse.ArgumentParser):
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# Override the error handler to prevent exiting on error
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def error(self, message):
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print(message)
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raise Exception(message)
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def exit(self):
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pass
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class Parser(BBSArgumentParser):
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def __init__(self, commands):
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self.parser = self.init_parser(commands)
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def init_parser(self, commands):
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# Root parser for BBS commands
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parser = BBSArgumentParser(
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description='BBS Main Menu',
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prog='',
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add_help=False,
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usage=argparse.SUPPRESS,
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)
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# We will create a subparser for each individual command
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subparsers = parser.add_subparsers(title='Commands', dest='command')
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# Loop through the commands and add each as a subparser
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for name, aliases, help_msg, func, arguments in commands:
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subparser = subparsers.add_parser(
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name,
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aliases=aliases,
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help=help_msg,
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)
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for arg_name, options in arguments.items():
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subparser.add_argument(arg_name, **options)
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subparser.set_defaults(func=func)
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return parser
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