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.javax.sdp.parser;
27:
28: import gov.nist.core.*;
29:
30: /**
31: * Basica lexigographical processor.
32: */
33: public class Lexer extends LexerCore {
34: /**
35: * Constructs a Lexer byte name to process the
36: * requested buffer of text.
37: * @param lexerName the requested processor
38: * @param buffer the data to be processed
39: */
40: public Lexer(String lexerName, String buffer) {
41: super (lexerName, buffer);
42:
43: }
44:
45: /**
46: * Selects a new lexer byte name.
47: * @param lexerName the new processor to use
48: */
49: public void selectLexer(String lexerName) {
50: }
51:
52: /**
53: * Gets the firld name.
54: * @param line the text to parse
55: * @return the name of the field to process
56: */
57: public static String getFieldName(String line) {
58: int i = line.indexOf("=");
59: if (i == -1)
60: return null;
61: else
62: return line.substring(0, i);
63: }
64:
65: }
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