01: /*
02: *
03: *
04: * Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License version
09: * 2 only, as published by the Free Software Foundation.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * General Public License version 2 for more details (a copy is
15: * included at /legal/license.txt).
16: *
17: * You should have received a copy of the GNU General Public License
18: * version 2 along with this work; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA
21: *
22: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
23: * Clara, CA 95054 or visit www.sun.com if you need additional
24: * information or have any questions.
25: */
26:
27: package gov.nist.siplite.parser;
28:
29: import gov.nist.core.*;
30: import gov.nist.siplite.header.*;
31:
32: /**
33: * Parser for Subscription State header.
34: */
35: public class SubscriptionStateParser extends ParametersParser {
36: /** Default constructor. */
37: protected SubscriptionStateParser() {
38: }
39:
40: /**
41: * Constructor with header value.
42: * @param value full header value respresented as a string
43: */
44: public SubscriptionStateParser(String value) {
45: super (value);
46: }
47:
48: /**
49: * Constructor with initial lexer engine.
50: * @param lexer initial lexer engine
51: */
52: protected SubscriptionStateParser(Lexer lexer) {
53: super (lexer);
54: }
55:
56: /**
57: * Invokes parser for Subscription State header field.
58: * @return the parsed Subscription State header
59: * @throws ParseException if a parsing error occurs
60: */
61: public Header parse() throws ParseException {
62: // A parser for this header should be the same as for any
63: // generic header, so use the parser from ExtensionParser.
64: Header h = new ExtensionParser(lexer.getBuffer()).parse();
65:
66: SubscriptionStateHeader retval = null;
67: try {
68: retval = new SubscriptionStateHeader(h.getValue()
69: .toString());
70: } catch (IllegalArgumentException iae) {
71: throw new ParseException(iae.getMessage(), 0);
72: }
73:
74: // Copy parameters from the extension header.
75: NameValueList parameterList = ((ParametersHeader) h)
76: .getParameters();
77: if (parameterList != null && parameterList.size() > 0) {
78: retval.setParameters(parameterList);
79: }
80:
81: // System.out.println(">>> parse(): " + retval);
82:
83: return retval;
84: }
85: }
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