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 */ 21 package proguard.obfuscate; 22 23 import proguard.classfile.*; 24 import proguard.classfile.attribute.*; 25 import proguard.classfile.attribute.visitor.AttributeVisitor; 26 import proguard.classfile.editor.ConstantPoolEditor; 27 import proguard.classfile.util.SimplifiedVisitor; 28 import 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 */ 37 public class SourceFileRenamer 38 extends SimplifiedVisitor 39 implements 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 */ SourceFileRenamer(String newSourceFileAttribute)50 public SourceFileRenamer(String newSourceFileAttribute) 51 { 52 this.newSourceFileAttribute = newSourceFileAttribute; 53 } 54 55 56 // Implementations for ClassVisitor. 57 visitProgramClass(ProgramClass programClass)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 visitAnyAttribute(Clazz clazz, Attribute attribute)67 public void visitAnyAttribute(Clazz clazz, Attribute attribute) {} 68 69 visitSourceFileAttribute(Clazz clazz, SourceFileAttribute sourceFileAttribute)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 visitSourceDirAttribute(Clazz clazz, SourceDirAttribute sourceDirAttribute)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