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/*
 * JBoss, Home of Professional Open Source
 * Copyright 2011, Red Hat, Inc. and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package android.gov.nist.javax.sip.parser.chars;

import android.gov.nist.javax.sip.address.AddressImpl;
import android.gov.nist.javax.sip.address.SipUri;
import android.gov.nist.javax.sip.header.Contact;
import android.gov.nist.javax.sip.header.ContactList;
import android.gov.nist.javax.sip.header.SIPHeader;

import android.javax.sip.address.URI;
import java.text.ParseException;
import java.util.HashSet;
import java.util.Iterator;

/**
 * A parser for The SIP contact header.
 *
 * @version 1.2 $Revision: 1.13 $ $Date: 2009/10/22 10:27:37 $
 * @since 1.1
 */
public class ContactParser extends AddressParametersParser {

    public ContactParser(char[] contact) {
        super(contact);
    }

    protected ContactParser(Lexer lexer) {
        super(lexer);
        this.lexer = lexer;
    }

    public SIPHeader parse() throws ParseException {
        // past the header name and the colon.
        headerName(TokenTypes.CONTACT);
        ContactList retval = new ContactList();
        while (true) {
            Contact contact = new Contact();
            if (lexer.lookAhead(0) == '*') {
                final char next = lexer.lookAhead(1);
                if (next == ' ' || next == '\t' || next == '\r' || next == '\n') {
                    this.lexer.match('*');
                    contact.setWildCardFlag(true);
                } else {
                    super.parse(contact);
                }
            } else {
                super.parse(contact);
            }
            retval.add(contact);
            this.lexer.SPorHT();
            char la = lexer.lookAhead(0);
            if (la == ',') {
                this.lexer.match(',');
                this.lexer.SPorHT();
            } else if (la == '\n' || la == '\0')
                break;
            else
                throw createParseException("unexpected char");
        }
        return retval;
    }

}