internal static Iso8601Duration Normalise(Iso8601Duration duration)
{
Check.Require(duration != null, "duration must not be null.");
int seconds = duration.Seconds;
int minutes = duration.Minutes;
int hours = duration.Hours;
int days = duration.Days + duration.Weeks * 7;
int months = duration.Months;
int years = duration.Years;
if (seconds >= 60)
{
minutes += seconds / 60;
seconds = seconds % 60;
}
if (minutes >= 60)
{
hours += minutes / 60;
minutes = minutes % 60;
}
if (hours >= 24)
{
days += hours / 24;
hours = hours % 24;
}
if (months > 12)
{
years += months / 12;
months = months % 12;
}
return(new Iso8601Duration(years, months, days, 0,
hours, minutes, seconds, duration.FractionalSecond));
}
internal Iso8601Time Add(Iso8601Duration duration)
{
DesignByContract.Check.Require(duration != null, "duration must not be null.");
Iso8601Time newTime = new Iso8601Time(this.ToString());
Iso8601Duration normalisedDuration = Iso8601Duration.Normalise(duration);
if (normalisedDuration.FractionalSecond > 0)
{
if (newTime.SecondUnknown)
{
throw new NotSupportedException("Cannot add a duration with fractionalSeconds when the datetime seconds unknow.");
}
if (newTime.HasFractionalSecond)
{
newTime.fractionalSecond += normalisedDuration.FractionalSecond;
NormaliseFractionalSecond(newTime);
}
else
{
newTime.fractionalSecond = normalisedDuration.FractionalSecond;
}
}
if (normalisedDuration.Seconds > 0)
{
if (newTime.SecondUnknown)
{
throw new NotSupportedException("Cannot add a duration with seconds when the time seconds unknow.");
}
newTime.second += normalisedDuration.Seconds;
NormaliseSecond(newTime);
}
if (normalisedDuration.Minutes > 0)
{
if (newTime.MinuteUnknown)
{
throw new NotSupportedException("Cannot add a duration with minutes when the time minutes unknow.");
}
newTime.minute += normalisedDuration.Minutes;
NormaliseMinute(newTime);
}
if (normalisedDuration.Hours > 0)
{
newTime.hour += normalisedDuration.Hours;
if (newTime.hour >= 24)
{
throw new ApplicationException("Invalid durtion results in the hours value greater or equal to 24.");
}
}
return(newTime);
}
internal static Iso8601Duration NormaliseDuration(int yearsDiff, int monthsDiff, int weeksDiff,
int daysDiff, int hoursDiff, int minutesDiff, int secondsDiff, double fractionalSecondsDiff,
int daysInMonth)
{
if (fractionalSecondsDiff < 0)
{
fractionalSecondsDiff += 1;
secondsDiff -= 1;
}
if (secondsDiff < 0)
{
secondsDiff += Iso8601DateTime.secondsInMinute;
minutesDiff--;
}
if (minutesDiff < 0)
{
minutesDiff += Iso8601DateTime.minutesInHour;
hoursDiff--;
}
if (hoursDiff < 0)
{
hoursDiff += Iso8601DateTime.hoursInDay;
daysDiff--;
}
if (daysDiff < 0)
{
daysDiff += daysInMonth;
monthsDiff--;
}
if (monthsDiff < 0)
{
monthsDiff += Iso8601DateTime.monthsInYear;
if (yearsDiff <= 0)
{
throw new ApplicationException("yearsDiff must greater than 1.");
}
yearsDiff--;
}
if (daysDiff > 0 && daysDiff % Iso8601DateTime.daysInWeek == 0)
{
weeksDiff = daysDiff / Iso8601DateTime.daysInWeek;
daysDiff = 0;
}
Iso8601Duration diff = new Iso8601Duration(yearsDiff, monthsDiff, daysDiff, weeksDiff, hoursDiff, minutesDiff, secondsDiff, fractionalSecondsDiff);
return(diff);
}
internal Iso8601Date Subtract(Iso8601Duration duration)
{
DesignByContract.Check.Require(duration != null, "duration must not be null.");
Iso8601Date newDate = new Iso8601Date(this.ToString());
Iso8601Duration normalisedDuration = Iso8601Duration.Normalise(duration);
if (normalisedDuration.Days > 0)
{
if (newDate.DayUnknown)
{
throw new NotSupportedException("Cannot subtract a duration with days when the datetime day unknow.");
}
newDate.day -= normalisedDuration.Days;
NormaliseSubtractedDay(newDate);
}
if (normalisedDuration.Months > 0)
{
if (newDate.MonthUnknown)
{
throw new NotSupportedException("Cannot subtract a duration with months when the datetime month unknow.");
}
newDate.month -= normalisedDuration.Months;
NormaliseSubtractedMonth(newDate);
if (!newDate.DayUnknown && (newDate.day > System.DateTime.DaysInMonth(newDate.year, newDate.month)))
{
newDate.day = System.DateTime.DaysInMonth(newDate.year, newDate.month);
}
}
if (normalisedDuration.Years > 0)
{
if (normalisedDuration.Years > newDate.year)
{
throw new ApplicationException("duration.Years must not greater than the dateTime.year");
}
newDate.year -= normalisedDuration.Years;
}
return(newDate);
}
internal Iso8601Date Add(Iso8601Duration duration)
{
DesignByContract.Check.Require(duration != null, "duration must not be null.");
Iso8601Date newDate = new Iso8601Date(this.ToString());
Iso8601Duration normalisedDuration = Iso8601Duration.Normalise(duration);
if (normalisedDuration.Months > 0)
{
if (newDate.MonthUnknown)
{
throw new NotSupportedException("Cannot add a duration with months when the datetime month unknow.");
}
newDate.month += normalisedDuration.Months;
NormaliseMonth(newDate);
if (normalisedDuration.Days <= 0)
{
if (!newDate.DayUnknown && newDate.day > System.DateTime.DaysInMonth(newDate.year, newDate.month))
{
newDate.day = System.DateTime.DaysInMonth(newDate.year, newDate.month);
}
}
}
if (normalisedDuration.Years > 0)
{
newDate.year += normalisedDuration.Years;
}
if (normalisedDuration.Days > 0)
{
if (newDate.DayUnknown)
{
throw new NotSupportedException("Cannot add a duration with days when the datetime day unknow.");
}
newDate.day += normalisedDuration.Days;
NormaliseDay(newDate);
}
return(newDate);
}
/// <summary>
/// Compare the current date time instance with the obj. Returns 0 if they are equal,
/// -1 if the current instance less than obj, 1 if the current instance greater than obj.
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public int CompareTo(object obj)
{
// precondition is that the current instance must be the same type as obj
Check.Require(this.GetType() == obj.GetType(),
"The current instance (" + this.GetType().ToString() + ") must be the same type as the obj("
+ obj.GetType().ToString() + ")");
Iso8601Duration objDuration = obj as Iso8601Duration;
if (this.durationValueInSeconds < objDuration.durationValueInSeconds)
{
return(-1);
}
else if (this.durationValueInSeconds == objDuration.durationValueInSeconds)
{
return(0);
}
else
{
return(1);
}
}
internal Iso8601Time Subtract(Iso8601Duration duration)
{
DesignByContract.Check.Require(duration != null, "duration must not be null.");
Iso8601Time newTime = new Iso8601Time(this.ToString());
Iso8601Duration normalisedDuration = Iso8601Duration.Normalise(duration);
if (normalisedDuration.FractionalSecond > 0)
{
if (newTime.SecondUnknown)
throw new NotSupportedException("Cannot subtract a duration with fractionalSeconds when the time seconds unknow.");
if (newTime.HasFractionalSecond)
newTime.fractionalSecond -= normalisedDuration.FractionalSecond;
else
newTime.fractionalSecond = (normalisedDuration.FractionalSecond)*-1;
NormaliseSubtractedFractionalSecond(newTime);
}
if (normalisedDuration.Seconds > 0)
{
if (newTime.SecondUnknown)
throw new NotSupportedException("Cannot subtract a duration with seconds when the time seconds unknow.");
newTime.second -= normalisedDuration.Seconds;
NormaliseSubtractedSecond(newTime);
}
if (normalisedDuration.Minutes > 0)
{
if (newTime.MinuteUnknown)
throw new NotSupportedException("Cannot subtract a duration with minutes when the time minutes unknow.");
newTime.minute -= normalisedDuration.Minutes;
NormaliseSubtractedMinute(newTime);
}
if (normalisedDuration.Hours > 0)
{
newTime.hour -= normalisedDuration.Hours;
if (newTime.hour < 0)
throw new ApplicationException("Invalid duration results the Iso8601Time hour less than 0 after subtraction.");
}
return newTime;
}
internal Iso8601Time Add(Iso8601Duration duration)
{
DesignByContract.Check.Require(duration != null, "duration must not be null.");
Iso8601Time newTime = new Iso8601Time(this.ToString());
Iso8601Duration normalisedDuration = Iso8601Duration.Normalise(duration);
if (normalisedDuration.FractionalSecond > 0)
{
if (newTime.SecondUnknown)
throw new NotSupportedException("Cannot add a duration with fractionalSeconds when the datetime seconds unknow.");
if (newTime.HasFractionalSecond)
{
newTime.fractionalSecond += normalisedDuration.FractionalSecond;
NormaliseFractionalSecond(newTime);
}
else
newTime.fractionalSecond = normalisedDuration.FractionalSecond;
}
if (normalisedDuration.Seconds > 0)
{
if (newTime.SecondUnknown)
throw new NotSupportedException("Cannot add a duration with seconds when the time seconds unknow.");
newTime.second += normalisedDuration.Seconds;
NormaliseSecond(newTime);
}
if (normalisedDuration.Minutes > 0)
{
if (newTime.MinuteUnknown)
throw new NotSupportedException("Cannot add a duration with minutes when the time minutes unknow.");
newTime.minute += normalisedDuration.Minutes;
NormaliseMinute(newTime);
}
if (normalisedDuration.Hours > 0)
{
newTime.hour += normalisedDuration.Hours;
if (newTime.hour >= 24)
throw new ApplicationException("Invalid durtion results in the hours value greater or equal to 24.");
}
return newTime;
}
internal static Iso8601Duration NormaliseDuration(int yearsDiff, int monthsDiff, int weeksDiff,
int daysDiff, int hoursDiff, int minutesDiff, int secondsDiff, double fractionalSecondsDiff,
int daysInMonth)
{
if (fractionalSecondsDiff < 0)
{
fractionalSecondsDiff += 1;
secondsDiff -= 1;
}
if (secondsDiff < 0)
{
secondsDiff += Iso8601DateTime.secondsInMinute;
minutesDiff--;
}
if (minutesDiff < 0)
{
minutesDiff += Iso8601DateTime.minutesInHour;
hoursDiff--;
}
if (hoursDiff < 0)
{
hoursDiff += Iso8601DateTime.hoursInDay;
daysDiff--;
}
if (daysDiff < 0)
{
daysDiff += daysInMonth;
monthsDiff--;
}
if (monthsDiff < 0)
{
monthsDiff += Iso8601DateTime.monthsInYear;
if (yearsDiff <= 0)
throw new ApplicationException("yearsDiff must greater than 1.");
yearsDiff--;
}
if (daysDiff > 0 && daysDiff % Iso8601DateTime.daysInWeek == 0)
{
weeksDiff = daysDiff / Iso8601DateTime.daysInWeek;
daysDiff = 0;
}
Iso8601Duration diff = new Iso8601Duration(yearsDiff, monthsDiff, daysDiff, weeksDiff, hoursDiff, minutesDiff, secondsDiff, fractionalSecondsDiff);
return diff;
}
internal Iso8601Date Subtract(Iso8601Duration duration)
{
DesignByContract.Check.Require(duration != null, "duration must not be null.");
Iso8601Date newDate = new Iso8601Date(this.ToString());
Iso8601Duration normalisedDuration = Iso8601Duration.Normalise(duration);
if (normalisedDuration.Days > 0)
{
if (newDate.DayUnknown)
throw new NotSupportedException("Cannot subtract a duration with days when the datetime day unknow.");
newDate.day -= normalisedDuration.Days;
NormaliseSubtractedDay(newDate);
}
if (normalisedDuration.Months > 0)
{
if (newDate.MonthUnknown)
throw new NotSupportedException("Cannot subtract a duration with months when the datetime month unknow.");
newDate.month -= normalisedDuration.Months;
NormaliseSubtractedMonth(newDate);
if (!newDate.DayUnknown &&(newDate.day>System.DateTime.DaysInMonth(newDate.year, newDate.month)))
{
newDate.day = System.DateTime.DaysInMonth(newDate.year, newDate.month);
}
}
if (normalisedDuration.Years > 0)
{
if (normalisedDuration.Years > newDate.year)
throw new ApplicationException("duration.Years must not greater than the dateTime.year");
newDate.year -= normalisedDuration.Years;
}
return newDate;
}
internal Iso8601Date Add(Iso8601Duration duration)
{
DesignByContract.Check.Require(duration != null, "duration must not be null.");
Iso8601Date newDate = new Iso8601Date(this.ToString());
Iso8601Duration normalisedDuration = Iso8601Duration.Normalise(duration);
if (normalisedDuration.Months > 0)
{
if (newDate.MonthUnknown)
throw new NotSupportedException("Cannot add a duration with months when the datetime month unknow.");
newDate.month += normalisedDuration.Months;
NormaliseMonth(newDate);
if (normalisedDuration.Days <= 0)
{
if (!newDate.DayUnknown && newDate.day > System.DateTime.DaysInMonth(newDate.year, newDate.month))
newDate.day = System.DateTime.DaysInMonth(newDate.year, newDate.month);
}
}
if (normalisedDuration.Years > 0)
newDate.year += normalisedDuration.Years;
if (normalisedDuration.Days > 0)
{
if (newDate.DayUnknown)
throw new NotSupportedException("Cannot add a duration with days when the datetime day unknow.");
newDate.day += normalisedDuration.Days;
NormaliseDay(newDate);
}
return newDate;
}
private bool IsMatchPattern(Iso8601Duration isoDuration)
{
DesignByContract.Check.Require(isoDuration != null, string.Format(CommonStrings.XMustNotBeNull, "isoDuration"));
if (this.yearsAllowedSet && !this.YearsAllowed && isoDuration.Years > 0)
return false;
if (this.monthsAllowedSet && !this.MonthsAllowed && isoDuration.Months > 0)
return false;
if (this.weeksAllowedSet && !this.WeeksAllowed && isoDuration.Weeks > 0)
return false;
if (this.daysAllowedSet && !this.DaysAllowed && isoDuration.Days > 0)
return false;
if (this.hoursAllowedSet && !this.HoursAllowed && isoDuration.Hours > 0)
return false;
if (this.minutesAllowedSet && !this.MinutesAllowed && isoDuration.Months > 0)
return false;
if (this.secondsAllowedSet && !this.SecondsAllowed && isoDuration.Seconds > 0)
return false;
if (!this.fractionalSecondsAllowed && isoDuration.FractionalSecond > 0)
return false;
return true;
}
internal static Iso8601Duration Normalise(Iso8601Duration duration)
{
Check.Require(duration != null, "duration must not be null.");
int seconds = duration.Seconds;
int minutes = duration.Minutes;
int hours = duration.Hours;
int days = duration.Days + duration.Weeks *7;
int months = duration.Months;
int years = duration.Years;
if (seconds >= 60)
{
minutes += seconds / 60;
seconds = seconds % 60;
}
if (minutes >= 60)
{
hours += minutes / 60;
minutes = minutes % 60;
}
if (hours >= 24)
{
days += hours / 24;
hours = hours % 24;
}
if (months > 12)
{
years += months / 12;
months = months % 12;
}
return new Iso8601Duration(years, months, days, 0,
hours, minutes, seconds, duration.FractionalSecond);
}
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;
}
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 Iso8601Time Subtract(Iso8601Duration duration)
{
DesignByContract.Check.Require(duration != null, "duration must not be null.");
Iso8601Time newTime = new Iso8601Time(this.ToString());
Iso8601Duration normalisedDuration = Iso8601Duration.Normalise(duration);
if (normalisedDuration.FractionalSecond > 0)
{
if (newTime.SecondUnknown)
{
throw new NotSupportedException("Cannot subtract a duration with fractionalSeconds when the time seconds unknow.");
}
if (newTime.HasFractionalSecond)
{
newTime.fractionalSecond -= normalisedDuration.FractionalSecond;
}
else
{
newTime.fractionalSecond = (normalisedDuration.FractionalSecond) * -1;
}
NormaliseSubtractedFractionalSecond(newTime);
}
if (normalisedDuration.Seconds > 0)
{
if (newTime.SecondUnknown)
{
throw new NotSupportedException("Cannot subtract a duration with seconds when the time seconds unknow.");
}
newTime.second -= normalisedDuration.Seconds;
NormaliseSubtractedSecond(newTime);
}
if (normalisedDuration.Minutes > 0)
{
if (newTime.MinuteUnknown)
{
throw new NotSupportedException("Cannot subtract a duration with minutes when the time minutes unknow.");
}
newTime.minute -= normalisedDuration.Minutes;
NormaliseSubtractedMinute(newTime);
}
if (normalisedDuration.Hours > 0)
{
newTime.hour -= normalisedDuration.Hours;
if (newTime.hour < 0)
{
throw new ApplicationException("Invalid duration results the Iso8601Time hour less than 0 after subtraction.");
}
}
return(newTime);
}
internal override string ValidValue(object aValue)
{
DesignByContract.Check.Require(aValue != null, string.Format(CommonStrings.XMustNotBeNull, "aValue"));
if (!Iso8601Duration.ValidIso8601Duration(aValue.ToString()))
return string.Format(AmValidationStrings.InvalidIsoDurationX, aValue);
Iso8601Duration isoDuration = new Iso8601Duration(aValue.ToString());
if (isoDuration == null)
throw new ApplicationException(string.Format(CommonStrings.XIsNull, isoDuration));
if (this.Range != null)
{
if (!this.range.Has(isoDuration))
{
return string.Format(AmValidationStrings.DurationXOutOfRange, aValue);
}
}
if ( this.Range == null && this.Pattern == null)
throw new ValidationException(CommonStrings.CDurationPatternAndRangeNull);
if (this.range != null)
{
if(!IsMatchPattern(isoDuration))
{
return string.Format(AmValidationStrings.DurationXDoesNotMatchPatternY, aValue, Pattern);
}
}
return string.Empty;
}
