/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999, 2000 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
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 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
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 *
 * 5. Products derived from this software may not be called "Apache",
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 2001, International
 * Business Machines, Inc., http://www.apache.org.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.xerces.impl.v2.new_datatypes;

/**
 * Validator for <gDay> datatype (W3C Schema datatypes)
 * 
 * @author Elena Litani
 * @author Gopal Sharma, SUN Microsystem Inc.
 * @version $Id: DayDatatypeValidator.java,v 1.1 2001/08/24 22:26:29 elena Exp $
 */

public class DayDV extends AbstractDateTimeDV{

    //size without time zone: ---09
    private final static int DAY_SIZE=5;

    // for most DV classes, this is the same as the DV_?? value defined
    // in XSSimpleTypeDecl that's corresponding to that class. But for
    // ID/IDREF/ENTITY, the privitivaDV is DV_STRING.

	public short getPrimitiveDV(){
		return XSSimpleTypeDecl.DV_GDAY;
    }

	public Object  getCompiledValue(String content) throws InvalidDatatypeValueException{
			int[] date;
			try{
					date= parse(content, null);
			}catch(Exception ex){
			}
			return date;
	}

    /**
     * Parses, validates and computes normalized version of gDay object
     * 
     * @param str    The lexical representation of gDay object ---DD
     *               with possible time zone Z or (-),(+)hh:mm
     *               Pattern: ---(\\d\\d)(Z|(([-+])(\\d\\d)(:(\\d\\d))?
     * @param date   uninitialized date object
     * @return normalized date representation
     * @exception Exception Invalid lexical representation
     */
    protected int[] parse(String str, int[] date) throws SchemaDateTimeException{

        resetBuffer(str);

        //create structure to hold an object
        if ( date== null ) {
            date=new int[TOTAL_SIZE];
        }
        resetDateObj(date);
        if (fBuffer.charAt(0)!='-' || fBuffer.charAt(1)!='-' || fBuffer.charAt(2)!='-') {
            throw new SchemaDateTimeException ("Error in day parsing");
        }

        //initialize values 
        date[CY]=YEAR;
        date[M]=MONTH;
        
        date[D]=parseInt(fStart+3,fStart+5);


        if ( DAY_SIZE<fEnd ) {
            int sign = findUTCSign(DAY_SIZE, fEnd);
            if ( sign<0 ) {
                throw new SchemaDateTimeException ("Error in day parsing");
            }
            else {
                getTimeZone(date, sign);
            }
        }

	   //validate and normalize
        validateDateTime(date);
        
        if ( date[utc]!=0 && date[utc]!='Z' ) {
            normalize(date);
        }
        return date;
    }

    /**
     * Converts gDay object representation to String
     * 
     * @param date   gDay object
     * @return lexical representation of gDay: ---DD with an optional time zone sign
     */
    protected String dateToString(int[] date) {
        message.setLength(0);
        message.append('-');
        message.append('-');
        message.append('-');
        message.append(date[D]);
        message.append((char)date[utc]);
        return message.toString();
    }

}