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package com.sun.org.apache.xerces.internal.impl.dv.xs;

import javax.xml.datatype.DatatypeConstants;
import javax.xml.datatype.XMLGregorianCalendar;

import com.sun.org.apache.xerces.internal.impl.dv.InvalidDatatypeValueException;
import com.sun.org.apache.xerces.internal.impl.dv.ValidationContext;

/**
 * Validator for <gMonthDay> datatype (W3C Schema Datatypes)
 *
 * @xerces.internal 
 *
 * @author Elena Litani
 * @author Gopal Sharma, SUN Microsystem Inc.
 *
 * @version $Id: MonthDayDV.java,v 1.7 2010-11-01 04:39:47 joehw Exp $
 */

public class MonthDayDV extends AbstractDateTimeDV {

    //size without time zone: --MM-DD
    private final static int MONTHDAY_SIZE = 7;

    /**
     * Convert a string to a compiled form
     *
     * @param  content The lexical representation of gMonthDay
     * @return a valid and normalized gMonthDay object
     */
    public Object getActualValue(String content, ValidationContext context) throws InvalidDatatypeValueException {
        try{
            return parse(content);
        } catch(Exception ex){
            throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new Object[]{content, "gMonthDay"});
        }
    }

    /**
     * Parses, validates and computes normalized version of gMonthDay object
     *
     * @param str    The lexical representation of gMonthDay object --MM-DD
     *               with possible time zone Z or (-),(+)hh:mm
     * @return normalized date representation
     * @exception SchemaDateTimeException Invalid lexical representation
     */
    protected DateTimeData parse(String str) throws SchemaDateTimeException{
        DateTimeData date = new DateTimeData(str, this);
        int len = str.length();

        //initialize
        date.year=YEAR;

        if (str.charAt(0)!='-' || str.charAt(1)!='-') {
            throw new SchemaDateTimeException("Invalid format for gMonthDay: "+str);
        }
        date.month=parseInt(str, 2, 4);
        int start=4;

        if (str.charAt(start++)!='-') {
            throw new SchemaDateTimeException("Invalid format for gMonthDay: " + str);
        }

        date.day=parseInt(str, start, start+2);

        if ( MONTHDAY_SIZE