1/*
2 * Conditions Of Use
3 *
4 * This software was developed by employees of the National Institute of
5 * Standards and Technology (NIST), an agency of the Federal Government.
6 * Pursuant to title 15 Untied States Code Section 105, works of NIST
7 * employees are not subject to copyright protection in the United States
8 * and are considered to be in the public domain.  As a result, a formal
9 * license is not needed to use the software.
10 *
11 * This software is provided by NIST as a service and is expressly
12 * provided "AS IS."  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
13 * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
14 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
15 * AND DATA ACCURACY.  NIST does not warrant or make any representations
16 * regarding the use of the software or the results thereof, including but
17 * not limited to the correctness, accuracy, reliability or usefulness of
18 * the software.
19 *
20 * Permission to use this software is contingent upon your acceptance
21 * of the terms of this agreement.
22 *
23 */
24package gov.nist.javax.sip.parser;
25
26import gov.nist.javax.sip.address.AddressImpl;
27import gov.nist.javax.sip.address.SipUri;
28import gov.nist.javax.sip.header.Contact;
29import gov.nist.javax.sip.header.ContactList;
30import gov.nist.javax.sip.header.SIPHeader;
31
32import javax.sip.address.URI;
33import java.text.ParseException;
34import java.util.HashSet;
35import java.util.Iterator;
36
37/**
38 * A parser for The SIP contact header.
39 *
40 * @version 1.2 $Revision: 1.13 $ $Date: 2009/10/22 10:27:37 $
41 * @since 1.1
42 */
43public class ContactParser extends AddressParametersParser {
44
45    public ContactParser(String contact) {
46        super(contact);
47    }
48
49    protected ContactParser(Lexer lexer) {
50        super(lexer);
51        this.lexer = lexer;
52    }
53
54    public SIPHeader parse() throws ParseException {
55        // past the header name and the colon.
56        headerName(TokenTypes.CONTACT);
57        ContactList retval = new ContactList();
58        while (true) {
59            Contact contact = new Contact();
60            if (lexer.lookAhead(0) == '*') {
61                final char next = lexer.lookAhead(1);
62                if (next == ' ' || next == '\t' || next == '\r' || next == '\n') {
63                    this.lexer.match('*');
64                    contact.setWildCardFlag(true);
65                } else {
66                    super.parse(contact);
67                }
68            } else {
69                super.parse(contact);
70            }
71            retval.add(contact);
72            this.lexer.SPorHT();
73            char la = lexer.lookAhead(0);
74            if (la == ',') {
75                this.lexer.match(',');
76                this.lexer.SPorHT();
77            } else if (la == '\n' || la == '\0')
78                break;
79            else
80                throw createParseException("unexpected char");
81        }
82        return retval;
83    }
84
85}
86