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/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package proguard.obfuscate;
import proguard.classfile.*;
import proguard.classfile.attribute.*;
import proguard.classfile.attribute.visitor.AttributeVisitor;
import proguard.classfile.util.*;
import proguard.classfile.visitor.*;
import java.io.PrintStream;
/**
* This ClassVisitor prints out the renamed classes and class members with
* their old names and new names.
*
* @see ClassRenamer
*
* @author Eric Lafortune
*/
public class MappingPrinter
extends SimplifiedVisitor
implements ClassVisitor,
MemberVisitor,
AttributeVisitor
{
private final PrintStream ps;
/**
* Creates a new MappingPrinter that prints to <code>System.out</code>.
*/
public MappingPrinter()
{
this(System.out);
}
/**
* Creates a new MappingPrinter that prints to the given stream.
* @param printStream the stream to which to print
*/
public MappingPrinter(PrintStream printStream)
{
this.ps = printStream;
}
// Implementations for ClassVisitor.
public void visitProgramClass(ProgramClass programClass)
{
String name = programClass.getName();
String newName = ClassObfuscator.newClassName(programClass);
ps.println(ClassUtil.externalClassName(name) +
" -> " +
ClassUtil.externalClassName(newName) +
":");
// Print out the class members.
programClass.fieldsAccept(this);
programClass.methodsAccept(this);
}
// Implementations for MemberVisitor.
public void visitProgramField(ProgramClass programClass, ProgramField programField)
{
String newName = MemberObfuscator.newMemberName(programField);
if (newName != null)
{
ps.println(" " +
ClassUtil.externalFullFieldDescription(
0,
programField.getName(programClass),
programField.getDescriptor(programClass)) +
" -> " +
newName);
}
}
public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod)
{
// Special cases: <clinit> and <init> are always kept unchanged.
// We can ignore them here.
String name = programMethod.getName(programClass);
if (ClassUtil.isInitializer(name))
{
return;
}
String newName = MemberObfuscator.newMemberName(programMethod);
if (newName != null)
{
ps.print(" ");
programMethod.attributesAccept(programClass, this);
ps.println(ClassUtil.externalFullMethodDescription(
programClass.getName(),
0,
programMethod.getName(programClass),
programMethod.getDescriptor(programClass)) +
" -> " +
newName);
}
}
// Implementations for AttributeVisitor.
public void visitAnyAttribute(Clazz clazz, Attribute attribute) {}
public void visitCodeAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute)
{
codeAttribute.attributesAccept(clazz, method, this);
}
public void visitLineNumberTableAttribute(Clazz clazz, Method method, CodeAttribute codeAttribute, LineNumberTableAttribute lineNumberTableAttribute)
{
// ps.print(lineNumberTableAttribute.getLowestLineNumber() + ":" +
// lineNumberTableAttribute.getHighestLineNumber() + ":");
// With the above statement,
// OpenJDK 8 (openjdk version "1.8.0_45-internal") crashed with:
// Exception in thread "main" java.lang.AbstractMethodError:
// java.lang.Exception.getMessage()Ljava/lang/String;
// at proguard.ProGuard.main(ProGuard.java:519)
//
// Using temporary variables fixed the crash.
// See bug 26274804.
int low,high;
low = lineNumberTableAttribute.getLowestLineNumber();
high = lineNumberTableAttribute.getHighestLineNumber();
ps.print(low + ":" + high + ":");
}
}
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