/// <summary>
/// Construct an XsdDuration from a TimeSpan value that represents an xsd:duration, an xdt:dayTimeDuration, or
/// an xdt:yearMonthDuration.
/// </summary>
public XsdDuration(TimeSpan timeSpan, DurationType durationType)
{
long ticks = timeSpan.Ticks;
ulong ticksPos;
bool isNegative;
if (ticks < 0)
{
// Note that (ulong) -Int64.MinValue = Int64.MaxValue + 1, which is what we want for that special case
isNegative = true;
ticksPos = (ulong)-ticks;
}
else
{
isNegative = false;
ticksPos = (ulong)ticks;
}
if (durationType == DurationType.YearMonthDuration)
{
int years = (int)(ticksPos / ((ulong)TimeSpan.TicksPerDay * 365));
int months = (int)((ticksPos % ((ulong)TimeSpan.TicksPerDay * 365)) / ((ulong)TimeSpan.TicksPerDay * 30));
if (months == 12)
{
// If remaining days >= 360 and < 365, then round off to year
years++;
months = 0;
}
this = new XsdDuration(isNegative, years, months, 0, 0, 0, 0, 0);
}
else
{
Debug.Assert(durationType == DurationType.Duration || durationType == DurationType.DayTimeDuration);
// Tick count is expressed in 100 nanosecond intervals
_nanoseconds = (uint)(ticksPos % 10000000) * 100;
if (isNegative)
{
_nanoseconds |= NegativeBit;
}
_years = 0;
_months = 0;
_days = (int)(ticksPos / (ulong)TimeSpan.TicksPerDay);
_hours = (int)((ticksPos / (ulong)TimeSpan.TicksPerHour) % 24);
_minutes = (int)((ticksPos / (ulong)TimeSpan.TicksPerMinute) % 60);
_seconds = (int)((ticksPos / (ulong)TimeSpan.TicksPerSecond) % 60);
}
}
internal static Exception TryParse(string s, DurationType durationType, out XsdDuration result)
{
string errorCode;
int length;
int value, pos, numDigits;
Parts parts = Parts.HasNone;
result = new XsdDuration();
s = s.Trim();
length = s.Length;
pos = 0;
numDigits = 0;
if (pos >= length)
{
goto InvalidFormat;
}
if (s[pos] == '-')
{
pos++;
result._nanoseconds = NegativeBit;
}
else
{
result._nanoseconds = 0;
}
if (pos >= length)
{
goto InvalidFormat;
}
if (s[pos++] != 'P')
{
goto InvalidFormat;
}
errorCode = TryParseDigits(s, ref pos, false, out value, out numDigits);
if (errorCode != null)
{
goto Error;
}
if (pos >= length)
{
goto InvalidFormat;
}
if (s[pos] == 'Y')
{
if (numDigits == 0)
{
goto InvalidFormat;
}
parts |= Parts.HasYears;
result._years = value;
if (++pos == length)
{
goto Done;
}
errorCode = TryParseDigits(s, ref pos, false, out value, out numDigits);
if (errorCode != null)
{
goto Error;
}
if (pos >= length)
{
goto InvalidFormat;
}
}
if (s[pos] == 'M')
{
if (numDigits == 0)
{
goto InvalidFormat;
}
parts |= Parts.HasMonths;
result._months = value;
if (++pos == length)
{
goto Done;
}
errorCode = TryParseDigits(s, ref pos, false, out value, out numDigits);
if (errorCode != null)
{
goto Error;
}
if (pos >= length)
{
goto InvalidFormat;
}
}
if (s[pos] == 'D')
{
if (numDigits == 0)
{
goto InvalidFormat;
}
parts |= Parts.HasDays;
result._days = value;
if (++pos == length)
{
goto Done;
}
errorCode = TryParseDigits(s, ref pos, false, out value, out numDigits);
if (errorCode != null)
{
goto Error;
}
if (pos >= length)
{
goto InvalidFormat;
}
}
if (s[pos] == 'T')
{
if (numDigits != 0)
{
goto InvalidFormat;
}
pos++;
errorCode = TryParseDigits(s, ref pos, false, out value, out numDigits);
if (errorCode != null)
{
goto Error;
}
if (pos >= length)
{
goto InvalidFormat;
}
if (s[pos] == 'H')
{
if (numDigits == 0)
{
goto InvalidFormat;
}
parts |= Parts.HasHours;
result._hours = value;
if (++pos == length)
{
goto Done;
}
errorCode = TryParseDigits(s, ref pos, false, out value, out numDigits);
if (errorCode != null)
{
goto Error;
}
if (pos >= length)
{
goto InvalidFormat;
}
}
if (s[pos] == 'M')
{
if (numDigits == 0)
{
goto InvalidFormat;
}
parts |= Parts.HasMinutes;
result._minutes = value;
if (++pos == length)
{
goto Done;
}
errorCode = TryParseDigits(s, ref pos, false, out value, out numDigits);
if (errorCode != null)
{
goto Error;
}
if (pos >= length)
{
goto InvalidFormat;
}
}
if (s[pos] == '.')
{
pos++;
parts |= Parts.HasSeconds;
result._seconds = value;
errorCode = TryParseDigits(s, ref pos, true, out value, out numDigits);
if (errorCode != null)
{
goto Error;
}
if (numDigits == 0)
{ //If there are no digits after the decimal point, assume 0
value = 0;
}
// Normalize to nanosecond intervals
for (; numDigits > 9; numDigits--)
{
value /= 10;
}
for (; numDigits < 9; numDigits++)
{
value *= 10;
}
result._nanoseconds |= (uint)value;
if (pos >= length)
{
goto InvalidFormat;
}
if (s[pos] != 'S')
{
goto InvalidFormat;
}
if (++pos == length)
{
goto Done;
}
}
else if (s[pos] == 'S')
{
if (numDigits == 0)
{
goto InvalidFormat;
}
parts |= Parts.HasSeconds;
result._seconds = value;
if (++pos == length)
{
goto Done;
}
}
}
// Duration cannot end with digits
if (numDigits != 0)
{
goto InvalidFormat;
}
// No further characters are allowed
if (pos != length)
{
goto InvalidFormat;
}
Done:
// At least one part must be defined
if (parts == Parts.HasNone)
{
goto InvalidFormat;
}
if (durationType == DurationType.DayTimeDuration)
{
if ((parts & (Parts.HasYears | Parts.HasMonths)) != 0)
{
goto InvalidFormat;
}
}
else if (durationType == DurationType.YearMonthDuration)
{
if ((parts & ~(XsdDuration.Parts.HasYears | XsdDuration.Parts.HasMonths)) != 0)
{
goto InvalidFormat;
}
}
return(null);
InvalidFormat:
return(new FormatException(string.Format(ResXml.XmlConvert_BadFormat, s, durationType)));
Error:
return(new OverflowException(string.Format(ResXml.XmlConvert_Overflow, s, durationType)));
}
internal static Exception TryParse(string s, out XsdDuration result)
{
return(TryParse(s, DurationType.Duration, out result));
}