/// <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;
}
}
/// <summary>
/// Internal function to format the date based on a date, rather than a string
/// </summary>
/// <returns>The formtted date and time as a ISO8601 string</returns>
internal string dateTimeImpl(DateTimeTZ dtz)
{
return dtz.ToString();
}
/// <summary>
/// Implements the following function
/// string date:date-time()
/// </summary>
/// <returns>The current date and time or the empty string if the
/// date is invalid </returns>
public string dateTime(string s)
{
try
{
DateTimeTZ d = new DateTimeTZ(s);
return dateTimeImpl(d);
}
catch (FormatException)
{
return "";
}
}
/// <summary>
/// Implements the following function
/// string date:date-time()
/// Output format is ISO 8601 (YYYY-MM-DDThh:mm:ss{Z | {+ | -}zz:zz}).
/// YYYY - year with century
/// MM - month in numbers with leading zero
/// DD - day in numbers with leading zero
/// T - the letter T
/// hh - hours in numbers with leading zero (00-23).
/// mm - minutes in numbers with leading zero (00-59).
/// ss - seconds in numbers with leading zero (00-59).
/// +/-zzzz - time zone expressed as hours and minutes from UTC.
/// If UTC, then this is the letter Z
/// If east of Greenwich, then -zz:zz (e.g. Pacific standard time is -08:00)
/// If west of Greenwich, then +zz:zz (e.g. Tokyo is +09:00)
/// </summary>
/// <returns>The current time.</returns>
public string dateTime()
{
DateTimeTZ d = new DateTimeTZ();
return dateTimeImpl(d);
}