_homeassistant.py 1.1 KB

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  1. # systemctl-mqtt - MQTT client triggering & reporting shutdown on systemd-based systems
  2. #
  3. # Copyright (C) 2020 Fabian Peter Hammerle <fabian@hammerle.me>
  4. #
  5. # This program is free software: you can redistribute it and/or modify
  6. # it under the terms of the GNU General Public License as published by
  7. # the Free Software Foundation, either version 3 of the License, or
  8. # any later version.
  9. #
  10. # This program is distributed in the hope that it will be useful,
  11. # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13. # GNU General Public License for more details.
  14. #
  15. # You should have received a copy of the GNU General Public License
  16. # along with this program. If not, see <https://www.gnu.org/licenses/>.
  17. import re
  18. import systemctl_mqtt._utils
  19. NODE_ID_ALLOWED_CHARS = r"a-zA-Z0-9_-"
  20. def get_default_node_id() -> str:
  21. return re.sub(
  22. f"[^{NODE_ID_ALLOWED_CHARS}]",
  23. "",
  24. # pylint: disable=protected-access
  25. systemctl_mqtt._utils.get_hostname(),
  26. )
  27. def validate_node_id(node_id: str) -> bool:
  28. return re.match(f"^[{NODE_ID_ALLOWED_CHARS}]+$", node_id) is not None