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: package gov.nist.siplite.parser;
26:
27: import gov.nist.core.*;
28: import gov.nist.siplite.header.*;
29:
30: /**
31: * Parser for Content-Length Header.
32: * @version JAIN-SIP-1.1
33: *
34: *
35: * <a href="{@docRoot}/uncopyright.html">This code is in the public domain.</a>
36: *
37: */
38: public class ContentLengthParser extends HeaderParser {
39: /** Default constructor. */
40: public ContentLengthParser() {
41: }
42:
43: /**
44: * Constructor with initial content length header string.
45: * @param contentLength initial content length header field
46: */
47: public ContentLengthParser(String contentLength) {
48: super (contentLength);
49: }
50:
51: /**
52: * Constructor with initial lexer engine.
53: * @param lexer initial lexer engine
54: */
55: protected ContentLengthParser(Lexer lexer) {
56: super (lexer);
57: }
58:
59: /**
60: * Invokes parser for content length header field.
61: * @return the parsed content length header
62: */
63: public Header parse() throws ParseException {
64: if (debug)
65: dbg_enter("ContentLengthParser.enter");
66: try {
67: ContentLengthHeader contentLength = new ContentLengthHeader();
68: headerName(TokenTypes.CONTENT_LENGTH);
69: String number = lexer.number();
70: contentLength.setContentLength(Integer.parseInt(number));
71: this .lexer.SPorHT();
72: this .lexer.match('\n');
73: return contentLength;
74: } catch (ParseException pe) {
75: throw createParseException(pe.getMessage());
76: } finally {
77: if (debug)
78: dbg_leave("ContentLengthParser.leave");
79: }
80: }
81: }
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