1/*
2 * ProGuard -- shrinking, optimization, obfuscation, and preverification
3 *             of Java bytecode.
4 *
5 * Copyright (c) 2002-2014 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.obfuscate;
22
23import proguard.classfile.*;
24import proguard.classfile.attribute.*;
25import proguard.classfile.attribute.visitor.AttributeVisitor;
26import proguard.classfile.editor.ConstantPoolEditor;
27import proguard.classfile.util.SimplifiedVisitor;
28import proguard.classfile.visitor.ClassVisitor;
29
30/**
31 * This ClassVisitor changes the name stored in the source file attributes
32 * and source dir attributes of the classes that it visits, if the
33 * attributes are present.
34 *
35 * @author Eric Lafortune
36 */
37public class SourceFileRenamer
38extends      SimplifiedVisitor
39implements   ClassVisitor,
40             AttributeVisitor
41{
42    private final String newSourceFileAttribute;
43
44
45    /**
46     * Creates a new SourceFileRenamer.
47     * @param newSourceFileAttribute the new string to be put in the source file
48     *                               attributes.
49     */
50    public SourceFileRenamer(String newSourceFileAttribute)
51    {
52        this.newSourceFileAttribute = newSourceFileAttribute;
53    }
54
55
56    // Implementations for ClassVisitor.
57
58    public void visitProgramClass(ProgramClass programClass)
59    {
60        // Only visit the class attributes.
61        programClass.attributesAccept(this);
62    }
63
64
65    // Implementations for AttributeVisitor.
66
67    public void visitAnyAttribute(Clazz clazz, Attribute attribute) {}
68
69
70    public void visitSourceFileAttribute(Clazz clazz, SourceFileAttribute sourceFileAttribute)
71    {
72        // Fix the source file attribute.
73        sourceFileAttribute.u2sourceFileIndex =
74            new ConstantPoolEditor((ProgramClass)clazz).addUtf8Constant(newSourceFileAttribute);
75    }
76
77
78    public void visitSourceDirAttribute(Clazz clazz, SourceDirAttribute sourceDirAttribute)
79    {
80        // Fix the source file attribute.
81        sourceDirAttribute.u2sourceDirIndex =
82            new ConstantPoolEditor((ProgramClass)clazz).addUtf8Constant(newSourceFileAttribute);
83    }
84}
85