/*
 * Copyright (C) 2005 Luca Veltri - University of Parma - Italy
 * 
 * This file is part of MjSip (http://www.mjsip.org)
 * 
 * MjSip is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * MjSip is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with MjSip; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 * Author(s):
 * Luca Veltri (luca.veltri@unipr.it)
 */

package org.zoolu.sip.header;

import org.zoolu.sip.address.*;
import org.zoolu.sip.provider.SipParser;
import org.zoolu.tools.Parser;

/**
 * Abstract NameAddress Header is the base Class for SIP Headers such as
 * EndPointHeader. It contains a NameAddress, formed by a SIP URI and optionally
 * a display name.
 */
public abstract class NameAddressHeader extends ParametricHeader {
	/** Creates a new NameAddressHeader. */
	// public NameAddressHeader(String hname)
	// { super(hname);
	// }
	/** Creates a new NameAddressHeader. */
	public NameAddressHeader(String hname, NameAddress nameaddr) {
		super(hname, nameaddr.toString());
	}

	/** Creates a new NameAddressHeader. */
	public NameAddressHeader(String hname, SipURL url) {
		super(hname, url.toString());
	}

	/** Creates a new NameAddressHeader. */
	public NameAddressHeader(Header hd) {
		super(hd);
	}

	/**
	 * Gets NameAddress of NameAddressHeader (Returns null if NameAddress does
	 * not exist - i.e. wildcard ContactHeader)
	 */
	public NameAddress getNameAddress() {
		NameAddress naddr = (new SipParser(value)).getNameAddress();
		return naddr;
	}

	/** Sets NameAddress of NameAddressHeader */
	public void setNameAddress(NameAddress naddr) {
		value = naddr.toString();
	}

	// ***************** ParametricHeader's extended method *****************

	/**
	 * Returns the index of the first semicolon before the first parameter.
	 * 
	 * @returns the index of the semicolon before the first parameter, or -1 if
	 *          no parameter is present.
	 */
	protected int indexOfFirstSemi() {
		Parser par = new Parser(value);
		par.goToSkippingQuoted('>');
		if (par.getPos() == value.length())
			par.setPos(0);
		par.goToSkippingQuoted(';');
		if (par.getPos() < value.length())
			return par.getPos();
		else
			return -1;
	}

}
