1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2013 Eric Lafortune (eric@graphics.cornell.edu)
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation; either version 2 of the License, or (at your option)
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21package proguard;
22
23import java.io.*;
24
25
26/**
27 * A <code>WordReader</code> that returns words from a line number reader.
28 *
29 * @author Eric Lafortune
30 */
31public class LineWordReader extends WordReader
32{
33    private final LineNumberReader reader;
34    private final String           description;
35
36
37    /**
38     * Creates a new LineWordReader for the given input.
39     */
40    public LineWordReader(LineNumberReader lineNumberReader,
41                          String           description,
42                          File             baseDir) throws IOException
43    {
44        super(baseDir);
45
46        this.reader      = lineNumberReader;
47        this.description = description;
48    }
49
50
51    // Implementations for WordReader.
52
53    protected String nextLine() throws IOException
54    {
55        return reader.readLine();
56    }
57
58
59    protected String lineLocationDescription()
60    {
61        return "line " + reader.getLineNumber() + " of " + description;
62    }
63
64
65    public void close() throws IOException
66    {
67        super.close();
68
69        if (reader != null)
70        {
71            reader.close();
72        }
73    }
74}
75