Function get_lang

kt-kernel/python/cli/i18n.py:1260–1303

Detect the current language setting. Priority: 1. KT_LANG environment variable 2. Config file general.language setting 3. LANG environment variable (if config is "auto") 4. Default to English Returns: Language code: "zh" for Chinese, "en" for English

()

def get_lang() -> str:
    """
    Detect the current language setting.

    Priority:
    1. KT_LANG environment variable
    2. Config file general.language setting
    3. LANG environment variable (if config is "auto")
    4. Default to English

    Returns:
        Language code: "zh" for Chinese, "en" for English
    """
    global _lang_cache

    # 1. Check KT_LANG environment variable (highest priority)
    kt_lang = os.environ.get("KT_LANG", "").lower()
    if kt_lang:
        return "zh" if kt_lang.startswith("zh") else "en"

    # 2. Return cached value if available (avoids I/O on every call)
    if _lang_cache is not None:
        return _lang_cache

    # 3. Check config file setting (with caching)
    # Import here to avoid circular imports
    from kt_kernel.cli.config.settings import get_settings

    try:
        settings = get_settings()
        config_lang = settings.get("general.language", "auto")
        if config_lang and config_lang != "auto":
            lang = "zh" if config_lang.lower().startswith("zh") else "en"
            _lang_cache = lang
            return lang
    except Exception:
        # If settings fail to load, continue with system detection
        pass

    # 4. Check system LANG environment variable
    system_lang = os.environ.get("LANG", "").lower()
    lang = "zh" if system_lang.startswith("zh") else "en"
    _lang_cache = lang
    return lang


def t(msg_key: str, **kwargs: Any) -> str: