exsltdatetime.java

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      return new XNumber(getNumber(datetime, formats, Calendar.MONTH));
    }
    
    /**
     * See above.
     */
    public static XNumber monthInYear()
    {      
      Calendar cal = Calendar.getInstance();
      return new XNumber(cal.get(Calendar.MONTH));
   }
    
    /**
     * The date:week-in-year function returns the week of the year as a number. If no argument 
     * is given, then the current local date/time, as returned by date:date-time is used as the 
     * default argument. For the purposes of numbering, counting follows ISO 8601: week 1 in a year 
     * is the week containing the first Thursday of the year, with new weeks beginning on a Monday. 
     * The date/time string specified as the argument is a right-truncated string in the format 
     * defined as the lexical representation of xs:dateTime in one of the formats defined in 
     * <a href="http://www.w3.org/TR/xmlschema-2/">[XML Schema Part 2: Datatypes]</a>. The 
     * permitted formats are as follows: 
     *    xs:dateTime (CCYY-MM-DDThh:mm:ss) 
     *    xs:date (CCYY-MM-DD) 
     * If the date/time string is not in one of these formats, then NaN is returned. 
     */
    public static XNumber weekInYear(String datetimeIn)
      throws ParseException
    {
      String[] edz = getEraDatetimeZone(datetimeIn);
      String datetime = edz[1];
      if (datetime == null) 
        return new XNumber(Double.NaN);      
      
      String[] formats = {dt, d};
      return new XNumber(getNumber(datetime, formats, Calendar.WEEK_OF_YEAR));
    }
        
    /**
     * See above.
     */
    public static XNumber weekInYear()
    {
       Calendar cal = Calendar.getInstance();
      return new XNumber(cal.get(Calendar.WEEK_OF_YEAR));
   }

    /**
     * The date:day-in-year function returns the day of a date in a year 
     * as a number. If no argument is given, then the current local
     * date/time, as returned by date:date-time is used the default argument.
     * The date/time string specified as the argument is a right-truncated 
     * string in the format defined as the lexical representation of xs:dateTime
     * in one of the formats defined in 
     * <a href="http://www.w3.org/TR/xmlschema-2/">[XML Schema Part 2: Datatypes]</a>. 
     * The permitted formats are as follows:
     *     xs:dateTime (CCYY-MM-DDThh:mm:ss)
     *     xs:date (CCYY-MM-DD) 
     * If the date/time string is not in one of these formats, then NaN is returned. 
     */
    public static XNumber dayInYear(String datetimeIn)
      throws ParseException
    {
      String[] edz = getEraDatetimeZone(datetimeIn);
      String datetime = edz[1];
      if (datetime == null) 
        return new XNumber(Double.NaN);            
      
      String[] formats = {dt, d};
      return new XNumber(getNumber(datetime, formats, Calendar.DAY_OF_YEAR));
    }
    
    /**
     * See above.
     */
    public static XNumber dayInYear()
    {
       Calendar cal = Calendar.getInstance();
      return new XNumber(cal.get(Calendar.DAY_OF_YEAR));
   }
    

    /**
     * The date:day-in-month function returns the day of a date as a number. 
     * If no argument is given, then the current local date/time, as returned 
     * by date:date-time is used the default argument. 
     * The date/time string specified as the argument is a left or right-truncated 
     * string in the format defined as the lexical representation of xs:dateTime 
     * in one of the formats defined in 
     * <a href="http://www.w3.org/TR/xmlschema-2/">[XML Schema Part 2: Datatypes]</a>. 
     * The permitted formats are as follows: 
     *      xs:dateTime (CCYY-MM-DDThh:mm:ss) 
     *      xs:date (CCYY-MM-DD) 
     *      xs:gMonthDay (--MM-DD) 
     *      xs:gDay (---DD) 
     * If the date/time string is not in one of these formats, then NaN is returned. 
     */
    public static XNumber dayInMonth(String datetimeIn)
      throws ParseException
    {
      String[] edz = getEraDatetimeZone(datetimeIn);
      String datetime = edz[1];
      String[] formats = {dt, d, gmd, gd};
      double day = getNumber(datetime, formats, Calendar.DAY_OF_MONTH);
      return new XNumber(day);
    }
    
    /**
     * See above.
     */
    public static XNumber dayInMonth()
    {
      Calendar cal = Calendar.getInstance();
      return new XNumber(cal.get(Calendar.DAY_OF_MONTH));
   }
    
    /**
     * The date:day-of-week-in-month function returns the day-of-the-week 
     * in a month of a date as a number (e.g. 3 for the 3rd Tuesday in May). 
     * If no argument is given, then the current local date/time, as returned 
     * by date:date-time is used the default argument. 
     * The date/time string specified as the argument is a right-truncated string
     * in the format defined as the lexical representation of xs:dateTime in one 
     * of the formats defined in 
     * <a href="http://www.w3.org/TR/xmlschema-2/">[XML Schema Part 2: Datatypes]</a>. 
     * The permitted formats are as follows: 
     *      xs:dateTime (CCYY-MM-DDThh:mm:ss) 
     *      xs:date (CCYY-MM-DD) 
     * If the date/time string is not in one of these formats, then NaN is returned. 
     */
    public static XNumber dayOfWeekInMonth(String datetimeIn)
      throws ParseException
    {
      String[] edz = getEraDatetimeZone(datetimeIn);
      String datetime = edz[1];
      if (datetime == null) 
        return new XNumber(Double.NaN);            

      String[] formats =  {dt, d};
      return new XNumber(getNumber(datetime, formats, Calendar.DAY_OF_WEEK_IN_MONTH));
    }
    
    /**
     * See above.
     */
    public static XNumber dayOfWeekInMonth()
    {
       Calendar cal = Calendar.getInstance();
      return new XNumber(cal.get(Calendar.DAY_OF_WEEK_IN_MONTH));
   }
      
    
    /**
     * The date:day-in-week function returns the day of the week given in a 
     * date as a number. If no argument is given, then the current local date/time, 
     * as returned by date:date-time is used the default argument. 
     * The date/time string specified as the argument is a right-truncated string 
     * in the format defined as the lexical representation of xs:dateTime in one 
     * of the formats defined in 
     * <a href="http://www.w3.org/TR/xmlschema-2/">[XML Schema Part 2: Datatypes]</a>. 
     * The permitted formats are as follows: 
     *      xs:dateTime (CCYY-MM-DDThh:mm:ss) 
     *      xs:date (CCYY-MM-DD) 
     * If the date/time string is not in one of these formats, then NaN is returned. 
                            The numbering of days of the week starts at 1 for Sunday, 2 for Monday and so on up to 7 for Saturday.  
     */
    public static XNumber dayInWeek(String datetimeIn)
      throws ParseException
    {
      String[] edz = getEraDatetimeZone(datetimeIn);
      String datetime = edz[1];
      if (datetime == null) 
        return new XNumber(Double.NaN);            

      String[] formats = {dt, d};
      return new XNumber(getNumber(datetime, formats, Calendar.DAY_OF_WEEK));
    }
    
    /**
     * See above.
     */
    public static XNumber dayInWeek()
    {
       Calendar cal = Calendar.getInstance();
      return new XNumber(cal.get(Calendar.DAY_OF_WEEK));
   }        

    /**
     * The date:hour-in-day function returns the hour of the day as a number. 
     * If no argument is given, then the current local date/time, as returned 
     * by date:date-time is used the default argument. 
     * The date/time string specified as the argument is a right-truncated 
     * string  in the format defined as the lexical representation of xs:dateTime
     * in one of the formats defined in 
     * <a href="http://www.w3.org/TR/xmlschema-2/">[XML Schema Part 2: Datatypes]</a>. 
     * The permitted formats are as follows: 
     *     xs:dateTime (CCYY-MM-DDThh:mm:ss) 
     *     xs:time (hh:mm:ss) 
     * If the date/time string is not in one of these formats, then NaN is returned. 
     */
    public static XNumber hourInDay(String datetimeIn)
      throws ParseException
    {
      String[] edz = getEraDatetimeZone(datetimeIn);
      String datetime = edz[1];
      if (datetime == null) 
        return new XNumber(Double.NaN);            
      
      String[] formats = {d, t};
      return new XNumber(getNumber(datetime, formats, Calendar.HOUR_OF_DAY));
    }
    
    /**
     * See above.
     */
    public static XNumber hourInDay()
    {
       Calendar cal = Calendar.getInstance();
      return new XNumber(cal.get(Calendar.HOUR_OF_DAY));
   }
    
    /**
     * The date:minute-in-hour function returns the minute of the hour 
     * as a number. If no argument is given, then the current local
     * date/time, as returned by date:date-time is used the default argument. 
     * The date/time string specified as the argument is a right-truncated 
     * string in the format defined as the lexical representation of xs:dateTime
     * in one of the formats defined in 
     * <a href="http://www.w3.org/TR/xmlschema-2/">[XML Schema Part 2: Datatypes]</a>. 
     * The permitted formats are as follows: 
     *      xs:dateTime (CCYY-MM-DDThh:mm:ss) 
     *      xs:time (hh:mm:ss) 
     * If the date/time string is not in one of these formats, then NaN is returned. 
     */
    public static XNumber minuteInHour(String datetimeIn)
      throws ParseException
    {
      String[] edz = getEraDatetimeZone(datetimeIn);
      String datetime = edz[1];
      if (datetime == null) 
        return new XNumber(Double.NaN);            
      
      String[] formats = {dt,t};
      return new XNumber(getNumber(datetime, formats, Calendar.MINUTE));
    }    
    
    /**
     * See above.
     */
   public static XNumber minuteInHour()
    {
       Calendar cal = Calendar.getInstance();
      return new XNumber(cal.get(Calendar.MINUTE));
   }    

    /**
     * The date:second-in-minute function returns the second of the minute 
     * as a number. If no argument is given, then the current local 
     * date/time, as returned by date:date-time is used the default argument. 
     * The date/time string specified as the argument is a right-truncated 
     * string in the format defined as the lexical representation of xs:dateTime
     * in one of the formats defined in 
     * <a href="http://www.w3.org/TR/xmlschema-2/">[XML Schema Part 2: Datatypes]</a>. 
     * The permitted formats are as follows: 
     *      xs:dateTime (CCYY-MM-DDThh:mm:ss) 
     *      xs:time (hh:mm:ss) 
     * If the date/time string is not in one of these formats, then NaN is returned. 
     */
    public static XNumber secondInMinute(String datetimeIn)
      throws ParseException
    {
      String[] edz = getEraDatetimeZone(datetimeIn);
      String datetime = edz[1];
      if (datetime == null) 
        return new XNumber(Double.NaN);            
      
      String[] formats = {dt, t};
      return new XNumber(getNumber(datetime, formats, Calendar.SECOND));
    }

    /**
     * See above.
     */
    public static XNumber secondInMinute()
    {
       Calendar cal = Calendar.getInstance();
      return new XNumber(cal.get(Calendar.SECOND));
    }
       
    /**
     * The date:leap-year function returns true if the year given in a date 
     * is a leap year. If no argument is given, then the current local
     * date/time, as returned by date:date-time is used as a default argument. 
     * The date/time string specified as the first argument must be a 
     * right-truncated string in the format defined as the lexical representation
     * of xs:dateTime in one of the formats defined in 
     * <a href="http://www.w3.org/TR/xmlschema-2/">[XML Schema Part 2: Datatypes]</a>. 
     * The permitted formats are as follows: 
     *    xs:dateTime (CCYY-MM-DDThh:mm:ss) 
     *    xs:date (CCYY-MM-DD) 
     *    xs:gYearMonth (CCYY-MM) 
     *    xs:gYear (CCYY) 
     * If the date/time string is not in one of these formats, then NaN is returned. 
     */
    public static XObject leapYear(String datetimeIn)
      throws ParseException
    {
      String[] edz = getEraDatetimeZone(datetimeIn);
      String datetime = edz[1];
      if (datetime == null) 
        return new XNumber(Double.NaN);            
            
      String[] formats = {dt, d, gym, gy};
      double dbl = getNumber(datetime, formats, Calendar.YEAR);
      if (dbl == Double.NaN) 
        return new XNumber(Double.NaN);
      int yr = (int)dbl;
      return new XBoolean(yr % 400 == 0 || (yr % 100 != 0 && yr % 4 == 0));
    }
    
    /**