| /* |
| * 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.io; |
| |
| import proguard.classfile.*; |
| import proguard.classfile.io.ProgramClassWriter; |
| |
| import java.io.*; |
| |
| |
| /** |
| * This DataEntryReader reads class entries and writes their corresponding |
| * versions from the ClassPool to a given DataEntryWriter. |
| * |
| * @author Eric Lafortune |
| */ |
| public class ClassRewriter implements DataEntryReader |
| { |
| private final ClassPool classPool; |
| private final DataEntryWriter dataEntryWriter; |
| |
| |
| public ClassRewriter(ClassPool classPool, |
| DataEntryWriter dataEntryWriter) |
| { |
| this.classPool = classPool; |
| this.dataEntryWriter = dataEntryWriter; |
| } |
| |
| |
| // Implementations for DataEntryReader. |
| |
| public void read(DataEntry dataEntry) throws IOException |
| { |
| String inputName = dataEntry.getName(); |
| String className = inputName.substring(0, inputName.length() - ClassConstants.CLASS_FILE_EXTENSION.length()); |
| |
| // Find the modified class corrsponding to the input entry. |
| ProgramClass programClass = (ProgramClass)classPool.getClass(className); |
| if (programClass != null) |
| { |
| // Rename the data entry if necessary. |
| String newClassName = programClass.getName(); |
| if (!className.equals(newClassName)) |
| { |
| dataEntry = new RenamedDataEntry(dataEntry, newClassName + ClassConstants.CLASS_FILE_EXTENSION); |
| } |
| |
| // Get the output entry corresponding to this input entry. |
| OutputStream outputStream = dataEntryWriter.getOutputStream(dataEntry); |
| if (outputStream != null) |
| { |
| // Write the class to the output entry. |
| DataOutputStream classOutputStream = new DataOutputStream(outputStream); |
| |
| new ProgramClassWriter(classOutputStream).visitProgramClass(programClass); |
| |
| classOutputStream.flush(); |
| } |
| } |
| } |
| } |