content: package gov2.nist.javax2.sip.parser.ims;
  /*
  * 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
  *
  * .
  *
  */
  import java.text.ParseException;
  
  import javax2.sip.InvalidArgumentException;
  
  import gov2.nist.javax2.sip.header.SIPHeader;
  import gov2.nist.javax2.sip.header.ims.PAssertedService;
  import gov2.nist.javax2.sip.header.ims.ParameterNamesIms;
  import gov2.nist.javax2.sip.parser.HeaderParser;
  import gov2.nist.javax2.sip.parser.Lexer;
  import gov2.nist.javax2.sip.parser.TokenTypes;
  
  /**
   *
   * @author aayush.bhatnagar
   * Rancore Technologies Pvt Ltd, Mumbai India.
   *
   * Parse this:
   * P-Asserted-Service: urn:urn-7:3gpp-service.exampletelephony.version1
   *
   */
  public class PAssertedServiceParser extends HeaderParser implements TokenTypes{
  
      protected PAssertedServiceParser(Lexer lexer) {
          super(lexer);
      }
  
      public PAssertedServiceParser(String pas)
      {
          super(pas);
      }
  
      public SIPHeader parse() throws ParseException {
          if(debug)
              dbg_enter("PAssertedServiceParser.parse");
          try
          {
          this.lexer.match(TokenTypes.P_ASSERTED_SERVICE);
          this.lexer.SPorHT();
          this.lexer.match(':');
          this.lexer.SPorHT();
  
          PAssertedService pps = new PAssertedService();
          String urn = this.lexer.getBuffer();
          if(urn.contains(ParameterNamesIms.SERVICE_ID)){
  
             if(urn.contains(ParameterNamesIms.SERVICE_ID_LABEL))
                     {
                      String serviceID = urn.split(ParameterNamesIms.SERVICE_ID_LABEL+".")[1];
  
                       if(serviceID.trim().equals(""))
                          try {
                              throw new InvalidArgumentException("URN should atleast have one sub-service");
                          } catch (InvalidArgumentException e) {
  
                              e.printStackTrace();
                          }
                          else
                      pps.setSubserviceIdentifiers(urn.split(ParameterNamesIms.SERVICE_ID_LABEL)[1]);
                     }
             else if(urn.contains(ParameterNamesIms.APPLICATION_ID_LABEL))
                {
                 String appID = urn.split(ParameterNamesIms.APPLICATION_ID_LABEL+".")[1];
                 if(appID.trim().equals(""))
                      try {
                          throw new InvalidArgumentException("URN should atleast have one sub-application");
                      } catch (InvalidArgumentException e) {
                          e.printStackTrace();
                      }
                      else
                    pps.setApplicationIdentifiers(urn.split(ParameterNamesIms.APPLICATION_ID_LABEL)[1]);
                }
             else
             {
                 try {
                  throw new InvalidArgumentException("URN is not well formed");
  
              } catch (InvalidArgumentException e) {
                  e.printStackTrace();
                      }
                    }
            }
  
              super.parse();
              return pps;
          }
          finally{
              if(debug)
                  dbg_enter("PAssertedServiceParser.parse");
          }
  
      }
  }
  