/// <summary>
/// Implements the following function
/// number date:year(string)
/// </summary>
/// <returns>The year part of the specified date or the empty string if the
/// date is invalid</returns>
/// <remarks>Does not support dates in the format of the xs:yearMonth or
/// xs:gYear types</remarks>
public double year(string d)
{
try
{
YearTZ date = new YearTZ(d);
return date.d.Year;
}
catch (FormatException)
{
return System.Double.NaN;
}
}
/// <summary>
/// Initialize the structure with the current date, time and timezone
/// </summary>
public static ExsltDateTime ParseDate(string d)
{
// Try each potential class, from most specific to least specific.
// First DateTimeTZ
try
{
DateTimeTZ t = new DateTimeTZ(d);
return t;
}
catch (FormatException)
{
}
// Next Date
try
{
DateTZ t = new DateTZ(d);
return t;
}
catch (FormatException)
{
}
// Next YearMonth
try
{
YearMonth t = new YearMonth(d);
return t;
}
catch (FormatException)
{
}
// Finally Year -- don't catch the exception for the last type
{
YearTZ t = new YearTZ(d);
return t;
}
}
