01: /*
02: * Portions Copyright 2000-2007 Sun Microsystems, Inc. All Rights
03: * Reserved. Use is subject to license terms.
04: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
05: *
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU General Public License version
08: * 2 only, as published by the Free Software Foundation.
09: *
10: * This program is distributed in the hope that it will be useful, but
11: * WITHOUT ANY WARRANTY; without even the implied warranty of
12: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13: * General Public License version 2 for more details (a copy is
14: * included at /legal/license.txt).
15: *
16: * You should have received a copy of the GNU General Public License
17: * version 2 along with this work; if not, write to the Free Software
18: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
19: * 02110-1301 USA
20: *
21: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
22: * Clara, CA 95054 or visit www.sun.com if you need additional
23: * information or have any questions.
24: */
25:
26: package gov.nist.siplite.parser;
27:
28: import gov.nist.siplite.address.*;
29: import gov.nist.siplite.header.*;
30: import gov.nist.core.*;
31:
32: /**
33: * Parser for the SIP request line.
34: *
35: * @version JAIN-SIP-1.1
36: *
37: *
38: * <a href="{@docRoot}/uncopyright.html">This code is in the public domain.</a>
39: */
40:
41: class RequestLineParser extends Parser {
42: /**
43: * Constructor with initial request line string.
44: * @param requestLine initial request line
45: */
46: public RequestLineParser(String requestLine) {
47: this .lexer = new Lexer("method_keywordLexer", requestLine);
48: }
49:
50: /**
51: * Constructor with initial lexer engine.
52: * @param lexer initial lexer engine
53: */
54: public RequestLineParser(Lexer lexer) {
55: this .lexer = lexer;
56: this .lexer.selectLexer("method_keywordLexer");
57: }
58:
59: /**
60: * Invokes parser for the request line.
61: * @return the parsed request line
62: * @exception ParseException if a parsing error occurs
63: */
64: public RequestLine parse() throws ParseException {
65: if (debug)
66: dbg_enter("parse");
67: try {
68: RequestLine retval = new RequestLine();
69: String m = method();
70: lexer.SPorHT();
71: retval.setMethod(m);
72: this .lexer.selectLexer("sip_urlLexer");
73: URLParser urlParser = new URLParser(this .getLexer());
74: URI url = urlParser.uriReference();
75: lexer.SPorHT();
76: retval.setUri(url);
77: this .lexer.selectLexer("request_lineLexer");
78: String v = sipVersion();
79: retval.setSipVersion(v);
80: lexer.SPorHT();
81: lexer.match('\n');
82: return retval;
83: } finally {
84: if (debug)
85: dbg_leave("parse");
86: }
87: }
88: }
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