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.io;
22
23import proguard.classfile.ClassConstants;
24
25import java.io.*;
26
27/**
28 * This <code>DataEntry</code> represents a file.
29 *
30 * @author Eric Lafortune
31 */
32public class FileDataEntry implements DataEntry
33{
34    private final File        directory;
35    private final File        file;
36    private InputStream inputStream;
37
38
39    public FileDataEntry(File directory,
40                         File file)
41    {
42        this.directory = directory;
43        this.file      = file;
44    }
45
46
47    // Implementations for DataEntry.
48
49    public String getName()
50    {
51        // Chop the directory name from the file name and get the right separators.
52        return file.equals(directory) ?
53            file.getName() :
54            file.getPath()
55            .substring(directory.getPath().length() + File.separator.length())
56            .replace(File.separatorChar, ClassConstants.INTERNAL_PACKAGE_SEPARATOR);
57    }
58
59
60    public boolean isDirectory()
61    {
62        return file.isDirectory();
63    }
64
65
66    public InputStream getInputStream() throws IOException
67    {
68        if (inputStream == null)
69        {
70            inputStream = new BufferedInputStream(new FileInputStream(file));
71        }
72
73        return inputStream;
74    }
75
76
77    public void closeInputStream() throws IOException
78    {
79        inputStream.close();
80        inputStream = null;
81    }
82
83
84    public DataEntry getParent()
85    {
86        return null;
87    }
88
89
90    // Implementations for Object.
91
92    public String toString()
93    {
94        return getName();
95    }
96}
97