C++ (Cpp) env_var_t::empty Examples

Example #1

/// Properly sets all locale information.
static void handle_locale(const wchar_t *env_var_name) {
    debug(2, L"handle_locale() called in response to '%ls' changing", env_var_name);
    const char *old_msg_locale = setlocale(LC_MESSAGES, NULL);
    const env_var_t val = env_get_string(env_var_name, ENV_EXPORT);
    const std::string &value = wcs2string(val);
    const std::string &name = wcs2string(env_var_name);
    debug(2, L"locale var %s='%s'", name.c_str(), value.c_str());
    if (val.empty()) {
        unsetenv(name.c_str());
    } else {
        setenv(name.c_str(), value.c_str(), 1);
    }

    char *locale = setlocale(LC_ALL, "");
    fish_setlocale();
    debug(2, L"handle_locale() setlocale(): '%s'", locale);

    const char *new_msg_locale = setlocale(LC_MESSAGES, NULL);
    debug(3, L"old LC_MESSAGES locale: '%s'", old_msg_locale);
    debug(3, L"new LC_MESSAGES locale: '%s'", new_msg_locale);
#ifdef HAVE__NL_MSG_CAT_CNTR
    if (strcmp(old_msg_locale, new_msg_locale)) {
        // Make change known to GNU gettext.
        extern int _nl_msg_cat_cntr;
        _nl_msg_cat_cntr++;
    }
#endif
}

Example #2

/// Properly sets all timezone information.
static void handle_timezone(const wchar_t *env_var_name) {
    debug(2, L"handle_timezone() called in response to '%ls' changing", env_var_name);
    const env_var_t val = env_get_string(env_var_name, ENV_EXPORT);
    const std::string &value = wcs2string(val);
    const std::string &name = wcs2string(env_var_name);
    debug(2, L"timezone var %s='%s'", name.c_str(), value.c_str());
    if (val.empty()) {
        unsetenv(name.c_str());
    } else {
        setenv(name.c_str(), value.c_str(), 1);
    }
    tzset();
}

Example #3

/// Push all curses/terminfo env vars into the global environment where they can be found by those
/// libraries.
static void handle_curses(const wchar_t *env_var_name) {
    debug(2, L"handle_curses() called in response to '%ls' changing", env_var_name);
    const env_var_t val = env_get_string(env_var_name, ENV_EXPORT);
    const std::string &name = wcs2string(env_var_name);
    const std::string &value = wcs2string(val);
    debug(2, L"curses var %s='%s'", name.c_str(), value.c_str());
    if (val.empty()) {
        unsetenv(name.c_str());
    } else {
        setenv(name.c_str(), value.c_str(), 1);
    }
    // TODO: Modify input_init() to allow calling it when the terminfo env vars are dynamically
    // changed. At the present time it can be called just once. Also, we should really only do this
    // if the TERM var is set.
    // input_init();
}