36 lines
1.4 KiB
Python
36 lines
1.4 KiB
Python
"""Internationalization helpers."""
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from __future__ import annotations
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from homeassistant.core import HomeAssistant
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def normalize_language(hass: HomeAssistant) -> str:
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"""Return the HA UI language as a lowercase table key.
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HA emits regional language codes (e.g. ``zh-Hans``, ``zh-Hant``,
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``pt-BR``), but the integration's localization tables — the
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calendar/notification/config-flow Python string dicts, the
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``name_<lang>`` template fields, and the ``styles.ts`` panel strings —
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are keyed by the bare 2-letter prefix. Centralizing the normalization
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keeps every consumer identical, so a regional-code user never silently
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falls back to English. Defaults to ``en`` when the language is unset.
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Brazilian Portuguese is the one regional variant with its OWN tables
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(``pt-br``) — it must not collapse into European ``pt``.
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"""
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return normalize_language_code(getattr(hass.config, "language", None))
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def normalize_language_code(code: str | None) -> str:
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"""Normalize a raw language code to a table key (idempotent).
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Every consumer that accepts an explicit ``language`` parameter must run
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it through here instead of truncating to two letters itself — a bare
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``[:2]`` would collapse ``pt-BR`` into European ``pt``.
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"""
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lang = str(code or "en").lower()
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if lang.startswith("pt") and lang.endswith("br"):
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return "pt-br"
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return lang[:2]
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