wstring Formatter::FormatDate()

in src/vswhere.lib/Formatter.cpp [144:192]

• 40 lines of code
• 7 McCabe index (conditional complexity)

wstring Formatter::FormatDate(_In_ const FILETIME& value)
{
    SYSTEMTIME stUniversal = {};
    SYSTEMTIME stLocal = {};
    wstring date;
    wstring time;

    if (!::FileTimeToSystemTime(&value, &stUniversal))
    {
        throw win32_error();
    }

    if (!::SystemTimeToTzSpecificLocalTime(NULL, &stUniversal, &stLocal))
    {
        throw win32_error();
    }

    // Format date
    auto cch = ::GetDateFormatW(LOCALE_USER_DEFAULT, DATE_SHORTDATE, &stLocal, NULL, NULL, 0);
    if (!cch)
    {
        throw win32_error();
    }

    date.reserve(cch);
    date.resize(cch - 1);
    cch = ::GetDateFormatW(LOCALE_USER_DEFAULT, DATE_SHORTDATE, &stLocal, NULL, const_cast<LPWSTR>(date.c_str()), cch);
    if (!cch)
    {
        throw win32_error();
    }

    // Format time
    cch = ::GetTimeFormatW(LOCALE_USER_DEFAULT, 0, &stLocal, NULL, NULL, 0);
    if (!cch)
    {
        throw win32_error();
    }

    time.reserve(cch);
    time.resize(cch - 1);
    cch = ::GetTimeFormatW(LOCALE_USER_DEFAULT, 0, &stLocal, NULL, const_cast<LPWSTR>(time.c_str()), cch);
    if (!cch)
    {
        throw win32_error();
    }

    return date + L" " + time;
}