/// <summary>
/// Format a millisecond time to a string with a certain time unit and depth (e.g. "3min, 14sec, 15ms" with depth 3).
/// </summary>
/// <param name="timeMilliseconds">The time in milliseconds.</param>
/// <param name="separator">The seperator between each unit (", " by default).</param>
/// <param name="format">The time unit format.</param>
/// <param name="depth">The depth to represent units with (depth 0 = just top unit, depth 1 = top unit and 1 specific unit, ...)</param>
/// <param name="putFirstUnitLast">Indicate if no other unit than the first unit should be put in the string. First unit will be put at the end of the string (for e.g. "3.14min").</param>
/// <param name="padSubUnits">Indicate if sub units should be left-padded with zeros </param>
/// <returns>The time string.</returns>
public static string FormatTime(double timeMilliseconds, string separator = ", ", TimeUnitFormat format = TimeUnitFormat.Minimum, int depth = 1, bool putFirstUnitLast = false, bool padSubUnits = false)
{
TimeUnit localUnit = TimeUnit.Millisecond;
IList<string> localTimes = new List<string>();
double localTime = timeMilliseconds;
while (true)
{
TimeUnit? nextUnit = localUnit.GetBigger();
localTimes.Add(((int)localTime).ToString(CultureInfo.InvariantCulture));
if (!nextUnit.HasValue) break;
double timeUnitParts = nextUnit.Value.GetTimeUnitParts();
double nextLocalTime = localTime / timeUnitParts;
if (nextLocalTime < 1.0) break;
string subTime = (localTime % timeUnitParts).ToString(CultureInfo.InvariantCulture);
if (padSubUnits) subTime = subTime.PadLeft((int)Math.Log10(timeUnitParts), '0');
localTimes[localTimes.Count - 1] = subTime;
localTime /= nextUnit.Value.GetTimeUnitParts();
localUnit = nextUnit.Value;
}
StringBuilder builder = new StringBuilder();
TimeUnit first = localUnit;
int printDepth = Math.Max(0, localTimes.Count - depth - 1);
for (int i = localTimes.Count - 1; i >= printDepth; i--)
{
builder.Append(localTimes[i]);
if (!putFirstUnitLast) builder.Append(localUnit.GetTimeUnitInFormat(format));
if (i - 1 >= printDepth)
{
builder.Append(separator);
localUnit = localUnit.GetSmaller().Value;
}
}
if (putFirstUnitLast) builder.Append(first.GetTimeUnitInFormat(format));
return builder.ToString();
}