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package gov.nist.javax.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 gov.nist.javax.sip.header.SIPHeader;
import gov.nist.javax.sip.header.ims.PUserDatabase;
import gov.nist.javax.sip.parser.Lexer;
import gov.nist.javax.sip.parser.ParametersParser;
import gov.nist.javax.sip.parser.TokenTypes;

/**
 *
 * @author aayush.bhatnagar
 * Rancore Technologies Pvt Ltd, Mumbai India.
 *
 * This is the parser for the P-user-database header.
 * The syntax for the P-user-database header as per
 * RFC 4457 is given below:
 *
 * P-User-Database = "P-User-Database" HCOLON database
 *                    *( SEMI generic-param )
 * database        = LAQUOT DiameterURI RAQUOT
 *
 * Eg: P-User-Database: 
 *
 */
public class PUserDatabaseParser extends ParametersParser implements TokenTypes{

    /**
     *
     * @param databaseName
     */
    public PUserDatabaseParser(String databaseName)
    {
        super(databaseName);
    }

    /**
     *
     * @param lexer
     */
    public PUserDatabaseParser(Lexer lexer)
    {
        super(lexer);
    }

    public SIPHeader parse() throws ParseException {

        if (debug)
            dbg_enter("PUserDatabase.parse");

        try{
            this.lexer.match(TokenTypes.P_USER_DATABASE);
            this.lexer.SPorHT();
            this.lexer.match(':');
            this.lexer.SPorHT();

            PUserDatabase userDatabase = new PUserDatabase();
            this.parseheader(userDatabase);

             return userDatabase;
        }
        finally{
            if(debug)
            dbg_leave("PUserDatabase.parse");
        }
    }

    private void parseheader(PUserDatabase userDatabase) throws ParseException
    {
        StringBuilder dbname = new StringBuilder();
        this.lexer.match(LESS_THAN);

        while(this.lexer.hasMoreChars())
        {
            char next = this.lexer.getNextChar();
          if (next!='>'&&next!='\n')
          {
          dbname.append(next);
          }

         }
        userDatabase.setDatabaseName(dbname.toString());
          super.parse(userDatabase);

}
}