// IPTemplatesAttribute.java
// $Id: IPTemplatesAttribute.java,v 1.12 2002/06/09 11:25:12 ylafon Exp $
// (c) COPYRIGHT MIT and INRIA, 1996.
// Please first read the full copyright statement in file COPYRIGHT.html

package org.w3c.jigsaw.auth ;

import org.w3c.tools.resources.ArrayAttribute;
import org.w3c.tools.resources.Attribute;

/**
 * The IPTemplates attribute description.
 * Maintains a list of IP templates (short arrays, to allow for the splash).
 */

public class IPTemplatesAttribute extends ArrayAttribute {

    /**
     * Is the given value a valid IPTemplates value ?
     * @param obj The object to test.
     * @exception IllegalAttributeAccess If the provided value doesn't pass the
     *    test.
     */

    public boolean checkValue(Object obj) {
	return ((obj == null) || (obj instanceof short[][])) ;
    }

    public String[] pickle(Object array) {
	short ips[][] = (short[][]) array ;
	String str[]  = new String[ips.length]; 
	for (int i = 0 ; i < ips.length ; i++) {
	    str[i] = ips[i][0]+"."+ips[i][1]+"."+ips[i][2]+"."+ips[i][3];
	}
	return str;
    }

    public Object unpickle (String array[]) {
	if (array.length < 1)
	    return null;
	short ips[][] = new short[array.length][4];
	for (int i = 0 ; i < array.length ; i++) {
	    String ip   = array[i];
	    int idx1; int idx2;
	    idx1      = ip.indexOf('.');
	    ips[i][0] = Short.parseShort(ip.substring(0, idx1));
	    idx1++;
	    idx2      = ip.indexOf('.',idx1);
	    ips[i][1] = Short.parseShort(ip.substring(idx1, idx2));
	    idx1      = ++idx2;
	    idx2      = ip.indexOf('.',idx1);
	    ips[i][2] = Short.parseShort(ip.substring(idx1, idx2));
	    idx1      = ++idx2;
	    ips[i][3] = Short.parseShort(ip.substring(idx1));
	}
	return ips;
    }

    public IPTemplatesAttribute(String name, short defs[][], int flags) {
	super(name, defs, flags) ;
	this.type = "[[S".intern();
    }

    public IPTemplatesAttribute() {
	super();
	this.type = "[[S".intern();
    }

}