content: /*
   * Conditions Of Use
   *
   * This software was developed by employees of the National Institute of
   * Standards and Technology (NIST), an agency of the Federal Government.
   * Pursuant to title 15 Untied States Code Section 105, works of NIST
   * employees are not subject to copyright protection in the United States
   * and are considered to be in the public domain.  As a result, a formal
   * license is not needed to use the software.
   *
   * This software is provided by NIST as a service and is expressly
   * provided "AS IS."  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
   * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
   * AND DATA ACCURACY.  NIST does not warrant or make any representations
   * regarding the use of the software or the results thereof, including but
   * not limited to the correctness, accuracy, reliability or usefulness of
   * the software.
   *
   * Permission to use this software is contingent upon your acceptance
   * of the terms of this agreement.
   *
   */
  package gov2.nist.javax2.sip.parser;
  
  import gov2.nist.javax2.sip.address.AddressImpl;
  import gov2.nist.javax2.sip.address.SipUri;
  import gov2.nist.javax2.sip.header.Contact;
  import gov2.nist.javax2.sip.header.ContactList;
  import gov2.nist.javax2.sip.header.SIPHeader;
  
  import javax2.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(String 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;
      }
  
  }
  