public static string NanosToString(long nanos)
{
Debug.Assert(nanos >= 0);
long nanoSeconds = nanos;
StringBuilder timeString = new StringBuilder();
long days = DAYS.convert(nanoSeconds, NANOSECONDS);
if (days > 0)
{
nanoSeconds -= DAYS.toNanos(days);
timeString.Append(days).Append('d');
}
long hours = HOURS.convert(nanoSeconds, NANOSECONDS);
if (hours > 0)
{
nanoSeconds -= HOURS.toNanos(hours);
timeString.Append(hours).Append('h');
}
long minutes = MINUTES.convert(nanoSeconds, NANOSECONDS);
if (minutes > 0)
{
nanoSeconds -= MINUTES.toNanos(minutes);
timeString.Append(minutes).Append('m');
}
long seconds = SECONDS.convert(nanoSeconds, NANOSECONDS);
if (seconds > 0)
{
nanoSeconds -= SECONDS.toNanos(seconds);
timeString.Append(seconds).Append('s');
}
long milliseconds = MILLISECONDS.convert(nanoSeconds, NANOSECONDS);
if (milliseconds > 0)
{
nanoSeconds -= MILLISECONDS.toNanos(milliseconds);
timeString.Append(milliseconds).Append("ms");
}
long microseconds = MICROSECONDS.convert(nanoSeconds, NANOSECONDS);
if (microseconds > 0)
{
nanoSeconds -= MICROSECONDS.toNanos(microseconds);
timeString.Append(microseconds).Append("μs");
}
if (nanoSeconds > 0 || timeString.Length == 0)
{
timeString.Append(nanoSeconds).Append("ns");
}
return(timeString.ToString());
}
