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      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  */
     24 package gov.nist.javax.sip.parser;
     25 
     26 import gov.nist.javax.sip.address.AddressImpl;
     27 import gov.nist.javax.sip.address.SipUri;
     28 import gov.nist.javax.sip.header.Contact;
     29 import gov.nist.javax.sip.header.ContactList;
     30 import gov.nist.javax.sip.header.SIPHeader;
     31 
     32 import javax.sip.address.URI;
     33 import java.text.ParseException;
     34 import java.util.HashSet;
     35 import 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  */
     43 public 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