Method THumanReadableDuration>

util/stream/format.cpp:74–123

template <>
void Out<NFormatPrivate::THumanReadableDuration>(IOutputStream& os, const NFormatPrivate::THumanReadableDuration& hr) {
    TTempBuf buf;
    TMemoryOutput ss(buf.Data(), buf.Size());

    do {
        ui64 microSeconds = hr.Value.MicroSeconds();
        if (microSeconds < 1000) {
            ss << microSeconds << "us";
            break;
        }
        if (microSeconds < 1000 * 1000) {
            NFormatPrivate::PrintDoubleShortly(ss, (double)microSeconds / 1000.0) << "ms";
            break;
        }

        double seconds = (double)(hr.Value.MilliSeconds()) / 1000.0;
        if (seconds < 60) {
            NFormatPrivate::PrintDoubleShortly(ss, seconds) << 's';
            break;
        }

        ui64 s = NFormatPrivate::Round(seconds * 1000 + 0.5) / 1000;

        ui64 m = s / 60;
        s = s % 60;

        ui64 h = m / 60;
        m = m % 60;

        ui64 d = h / 24;
        h = h % 24;

        ui64 times[] = {d, h, m, s};
        char names[] = {'d', 'h', 'm', 's'};
        bool first = true;

        for (size_t i = 0; i < Y_ARRAY_SIZE(times); ++i) {
            if (times[i] > 0) {
                if (!first) {
                    ss << ' ';
                }
                ss << times[i] << names[i];
                first = false;
            }
        }
    } while (false);

    size_t written = buf.Size() - ss.Avail();
    os.Write(buf.Data(), written);
}

void Time(IOutputStream& l) {
    l << millisec();