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*
25*/
26package gov.nist.javax.sip.parser;
27
28import gov.nist.javax.sip.header.*;
29import gov.nist.core.*;
30import java.text.ParseException;
31
32/** parameters parser header.
33 *
34 * @version 1.2 $Revision: 1.10 $ $Date: 2009/07/17 18:58:01 $
35 *
36 * @author M. Ranganathan   <br/>
37 *
38 *
39 *
40 */
41public abstract class ParametersParser extends HeaderParser {
42
43    protected ParametersParser(Lexer lexer) {
44        super((Lexer) lexer);
45    }
46
47    protected ParametersParser(String buffer) {
48        super(buffer);
49    }
50
51    protected void parse(ParametersHeader parametersHeader)
52        throws ParseException {
53        this.lexer.SPorHT();
54        while (lexer.lookAhead(0) == ';') {
55            this.lexer.consume(1);
56            // eat white space
57            this.lexer.SPorHT();
58            NameValue nv = nameValue();
59            parametersHeader.setParameter(nv);
60            // eat white space
61            this.lexer.SPorHT();
62        }
63    }
64
65
66
67    protected void parseNameValueList(ParametersHeader parametersHeader)
68        throws ParseException{
69        parametersHeader.removeParameters();
70        while (true) {
71                this.lexer.SPorHT();
72            NameValue nv = nameValue();
73            parametersHeader.setParameter(nv.getName(), (String) nv.getValueAsObject());
74            // eat white space
75            this.lexer.SPorHT();
76            if (lexer.lookAhead(0) != ';')  break;
77            else lexer.consume(1);
78        }
79    }
80}
81