private bool IsMatchPattern(Iso8601DateTime aValue)
{
DesignByContract.Check.Require(aValue != null, string.Format(CommonStrings.XMustNotBeNull, "aValue"));
DesignByContract.Check.Require(this.Pattern != null, string.Format(CommonStrings.XMustNotBeNull, "Pattern"));
if (!CDateTime.IsMatchValidityKind(this.MonthValidity, aValue.MonthUnknown))
return false;
if (!CDateTime.IsMatchValidityKind(this.DayValidity, aValue.DayUnknown))
return false;
if(!CDateTime.IsMatchValidityKind(this.HourValidity, aValue.HourUnknown))
return false;
if(!CDateTime.IsMatchValidityKind(this.MinuteValidity, aValue.MinuteUnknown))
return false;
if(!CDateTime.IsMatchValidityKind(this.SecondValidity, aValue.SecondUnknown))
return false;
if(!CDateTime.IsMatchValidityKind(this.MillisecondValidity, !aValue.HasFractionalSecond))
return false;
return true;
}
private static void NormaliseHour(Iso8601DateTime isoDateTime)
{
if (isoDateTime.hour >= 24)
{
isoDateTime.day += isoDateTime.hour / 24;
isoDateTime.hour = isoDateTime.hour % 24;
NormaliseDay(isoDateTime);
}
}
internal override string ValidValue(object aValue)
{
DesignByContract.Check.Require(aValue != null, string.Format(CommonStrings.XMustNotBeNull, "aValue"));
string dateTimeString = aValue.ToString();
if (!Iso8601DateTime.ValidIso8601DateTime(dateTimeString))
{
return string.Format(AmValidationStrings.InvalidIsoDateTimeX, dateTimeString);
}
Iso8601DateTime isoDateTime = new Iso8601DateTime(dateTimeString);
if (isoDateTime == null)
throw new ApplicationException(string.Format(CommonStrings.XIsNull, "isoDateTime"));
if (this.Pattern != null)
{
if (!IsMatchPattern(isoDateTime))
{
return string.Format(AmValidationStrings.DateTimeXDoesNotMatchPatternY, dateTimeString, Pattern);
}
}
if (this.Range != null)
{
if (!this.Range.Has(isoDateTime))
{
return string.Format(AmValidationStrings.DateTimeXOutOfRange, dateTimeString);
}
}
return string.Empty;
}
private static void NormaliseDay(Iso8601DateTime isoDateTime)
{
DesignByContract.Check.Require(!isoDateTime.MonthUnknown, "isoDateTime monthUnknown must be false.");
DesignByContract.Check.Require(!isoDateTime.DayUnknown, "isoDateTime dayUnknown must be false.");
Date date = new Date(isoDateTime.year, isoDateTime.month, isoDateTime.day);
date.NormaliseDay();
isoDateTime.year = date.Year;
isoDateTime.month = date.Month;
isoDateTime.day = date.Day;
}
private static void NormaliseFractionalSecond(Iso8601DateTime isoDateTime)
{
DesignByContract.Check.Require(!isoDateTime.MinuteUnknown, "isoDateTime.MinuteUnknow must be false.");
DesignByContract.Check.Require(!isoDateTime.SecondUnknown, "isoDateTime.SecondUnknown must be false.");
DesignByContract.Check.Require(isoDateTime.HasFractionalSecond, "isoDateTime.HasFractionalSecond must be true.");
Time time = new Time(isoDateTime.hour, isoDateTime.minute, isoDateTime.second, isoDateTime.fractionalSecond);
time.NormaliseFractionalSecond();
isoDateTime.hour = time.Hour;
isoDateTime.minute = time.Minute;
isoDateTime.second = time.Second;
isoDateTime.fractionalSecond = time.FractionalSeconds;
NormaliseHour(isoDateTime);
}
internal Iso8601DateTime Add(Iso8601Duration duration)
{
DesignByContract.Check.Require(duration != null, "duration must not be null.");
Iso8601DateTime newDateTime = new Iso8601DateTime(this.ToString());
Iso8601Duration normalisedDuration = Iso8601Duration.Normalise(duration);
if (normalisedDuration.FractionalSecond > 0)
{
if (newDateTime.SecondUnknown)
throw new NotSupportedException("Cannot add a duration with fractionalSeconds when the datetime seconds unknow.");
if (newDateTime.HasFractionalSecond)
{
newDateTime.fractionalSecond += normalisedDuration.FractionalSecond;
NormaliseFractionalSecond(newDateTime);
}
else
newDateTime.fractionalSecond = normalisedDuration.FractionalSecond;
}
if (normalisedDuration.Seconds > 0)
{
if (newDateTime.SecondUnknown)
throw new NotSupportedException("Cannot add a duration with seconds when the datetime seconds unknow.");
newDateTime.second += normalisedDuration.Seconds;
NormaliseSecond(newDateTime);
}
if (normalisedDuration.Minutes > 0)
{
if (newDateTime.MinuteUnknown)
throw new NotSupportedException("Cannot add a duration with minutes when the datetime minutes unknow.");
newDateTime.minute += normalisedDuration.Minutes;
NormaliseMinute(newDateTime);
}
if (normalisedDuration.Hours > 0)
{
if (newDateTime.HourUnknown)
throw new NotSupportedException("Cannot add a duration with hours when the datetime hour unknow.");
newDateTime.hour += normalisedDuration.Hours;
NormaliseHour(newDateTime);
NormaliseDay(newDateTime);
}
if (normalisedDuration.Months > 0)
{
if (newDateTime.MonthUnknown)
throw new NotSupportedException("Cannot add a duration with months when the datetime month unknow.");
newDateTime.month += normalisedDuration.Months;
NormaliseMonth(newDateTime);
if (normalisedDuration.Days <= 0)
{
if (!newDateTime.DayUnknown && (newDateTime.day > System.DateTime.DaysInMonth(newDateTime.year, newDateTime.month)))
{
newDateTime.day = System.DateTime.DaysInMonth(newDateTime.year, newDateTime.month);
}
}
}
if (normalisedDuration.Years > 0)
newDateTime.year += normalisedDuration.Years;
if (normalisedDuration.Days > 0)
{
if (newDateTime.DayUnknown)
throw new NotSupportedException("Cannot add a duration with days when the datetime day unknow.");
newDateTime.day += normalisedDuration.Days;
NormaliseDay(newDateTime);
}
return newDateTime;
}
internal Iso8601DateTime Subtract(Iso8601Duration duration)
{
DesignByContract.Check.Require(duration != null, "duration must not be null.");
Iso8601DateTime newDateTime = new Iso8601DateTime(this.ToString());
Iso8601Duration normalisedDuration = Iso8601Duration.Normalise(duration);
if (normalisedDuration.FractionalSecond > 0)
{
if (newDateTime.SecondUnknown)
throw new NotSupportedException("Cannot subtract a duration with fractionalSeconds when the datetime seconds unknow.");
if (newDateTime.HasFractionalSecond)
newDateTime.fractionalSecond -= normalisedDuration.FractionalSecond;
else
newDateTime.fractionalSecond = (normalisedDuration.FractionalSecond) * -1;
NormaliseSubtractedFractionalSecond(newDateTime);
}
if (normalisedDuration.Seconds > 0)
{
if (newDateTime.SecondUnknown)
throw new NotSupportedException("Cannot subtract a duration with seconds when the datetime seconds unknow.");
newDateTime.second -= normalisedDuration.Seconds;
NormaliseSubtractedSecond(newDateTime);
}
if (normalisedDuration.Minutes > 0)
{
if (newDateTime.MinuteUnknown)
throw new NotSupportedException("Cannot subtract a duration with minutes when the datetime minutes unknow.");
newDateTime.minute -= normalisedDuration.Minutes;
NormaliseSubtractedMinute(newDateTime);
}
if (normalisedDuration.Hours > 0)
{
if (newDateTime.HourUnknown)
throw new NotSupportedException("Cannot subtract a duration with hours when the datetime hour unknow.");
newDateTime.hour -= normalisedDuration.Hours;
NormaliseSubtractedHour(newDateTime);
}
if (normalisedDuration.Days > 0)
{
if (newDateTime.DayUnknown)
throw new NotSupportedException("Cannot subtract a duration with days when the datetime day unknow.");
newDateTime.day -= normalisedDuration.Days;
NormaliseSubtractedDay(newDateTime);
}
if (normalisedDuration.Months > 0)
{
if (newDateTime.MonthUnknown)
throw new NotSupportedException("Cannot subtract a duration with months when the datetime month unknow.");
newDateTime.month -= normalisedDuration.Months;
NormaliseSubtractedMonth(newDateTime);
if (!newDateTime.DayUnknown &&(newDateTime.day>System.DateTime.DaysInMonth(newDateTime.year, newDateTime.month)))
{
newDateTime.day = System.DateTime.DaysInMonth(newDateTime.year, newDateTime.month);
}
}
if (normalisedDuration.Years > 0)
{
if (normalisedDuration.Years > newDateTime.year)
throw new ApplicationException("duration.Years must not greater than the dateTime.year");
newDateTime.year -= normalisedDuration.Years;
}
return newDateTime;
}
/// <summary>
/// Take a DvDateTime and convert it to a System.DateTime
/// </summary>
/// <param name="dvDateTime"></param>
/// <returns></returns>
public static System.DateTime ToDateTime(Iso8601DateTime isoDateTime)
{
if (isoDateTime == null)
return System.DateTime.MinValue; // All we can do, really!
string timeString = isoDateTime.ToString(true, false);
// pad out years < 1000
int i = timeString.IndexOf('-');
if (i < 0)
i = timeString.Length;
if (i < 4)
{
timeString = "000".Substring(0, 4 - i) + timeString;
}
// pad out partial datetime
int timeDelimiter = timeString.IndexOf('T');
if (timeDelimiter < 0)
{
if (timeString.Length < 5)
timeString += "-01";
if (timeString.Length < 8)
timeString += "-01";
timeString += "T00:00:00";
}
else
{
int timezone = timeString.IndexOfAny(new char[] { 'Z', 'z', '+', '-' }, timeDelimiter);
int minuteDelimiter = timeString.IndexOf(':');
if (minuteDelimiter < 0)
{
if (timezone < 0)
timeString += ":00:00";
else
timeString = timeString.Substring(0, timeDelimiter + 3) + ":00:00" + timeString.Substring(timezone);
}
else
{
if (timezone < 0)
i = timeString.IndexOf(':', minuteDelimiter + 1);
else
i = timeString.IndexOf(':', minuteDelimiter + 1, timezone - minuteDelimiter);
if (i < 0)
{
if (timezone < 0)
timeString += ":00";
else
timeString = timeString.Substring(0, minuteDelimiter + 3) + ":00" + timeString.Substring(timezone);
}
}
}
System.DateTime dateTime = System.Xml.XmlConvert.ToDateTime(timeString,
System.Xml.XmlDateTimeSerializationMode.RoundtripKind);
// NOTE: timezone is only preserved when in local timezone or UTC.
// Unspecified timezone is assumed to be local
// A date/time with non-local and non-UTC timezone will be converted into local time
// i.e the datetime value will be different and in the local time zone unless in
// local or UTC timezone (or unspecified)
return dateTime;
}
private static void NormaliseSubtractedSecond(Iso8601DateTime isoDateTime)
{
DesignByContract.Check.Require(!isoDateTime.HourUnknown, "isoDateTime.HourUnknown must be false.");
Time time = new Time(isoDateTime.hour, isoDateTime.minute, isoDateTime.second);
time.NormaliseSubtractedSecond();
isoDateTime.hour = time.Hour;
isoDateTime.minute = time.Minute;
isoDateTime.second = time.Second;
NormaliseSubtractedHour(isoDateTime);
}
private static void NormaliseSubtractedMonth(Iso8601DateTime isoDateTime)
{
Date date = new Date(isoDateTime.year, isoDateTime.month);
date.NormaliseSubtractedMonth();
isoDateTime.year = date.Year;
isoDateTime.month = date.Month;
}
private static void NormaliseSubtractedHour(Iso8601DateTime isoDateTime)
{
if (isoDateTime.hour < 0)
{
isoDateTime.hour += 24;
isoDateTime.day--;
NormaliseSubtractedDay(isoDateTime);
}
}
private static void NormaliseMinute(Iso8601DateTime isoDateTime)
{
DesignByContract.Check.Require(!isoDateTime.HourUnknown, "isoDateTime.HourUnknown must be false.");
DesignByContract.Check.Require(!isoDateTime.MinuteUnknown, "isoDateTime.MinuteUnknow must be false.");
Time time = new Time(isoDateTime.hour, isoDateTime.minute);
time.NormaliseMinute();
isoDateTime.hour = time.Hour;
isoDateTime.minute = time.Minute;
NormaliseHour(isoDateTime);
}