| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2017 Eric Lafortune @ GuardSquare |
| * |
| * 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.ClassConstants; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| |
| /** |
| * This DataEntryReader delegates to another DataEntryReader, renaming the |
| * data entries based on the given map. Entries whose name does not appear |
| * in the map may be passed to an alternative DataEntryReader. |
| * |
| * @author Eric Lafortune |
| */ |
| public class DataEntryRenamer implements DataEntryReader |
| { |
| private final Map nameMap; |
| private final DataEntryReader renamedDataEntryReader; |
| private final DataEntryReader missingDataEntryReader; |
| |
| |
| /** |
| * Creates a new DataEntryRenamer. |
| * @param nameMap the map from old names to new names. |
| * @param renamedDataEntryReader the DataEntryReader to which renamed data |
| * entries will be passed. |
| */ |
| public DataEntryRenamer(Map nameMap, |
| DataEntryReader renamedDataEntryReader) |
| { |
| this(nameMap, renamedDataEntryReader, null); |
| } |
| |
| |
| /** |
| * Creates a new DataEntryRenamer. |
| * @param nameMap the map from old names to new names. |
| * @param renamedDataEntryReader the DataEntryReader to which renamed data |
| * entries will be passed. |
| * @param missingDataEntryReader the optional DataEntryReader to which data |
| * entries that can't be renamed will be |
| * passed. |
| */ |
| public DataEntryRenamer(Map nameMap, |
| DataEntryReader renamedDataEntryReader, |
| DataEntryReader missingDataEntryReader) |
| { |
| this.nameMap = nameMap; |
| this.renamedDataEntryReader = renamedDataEntryReader; |
| this.missingDataEntryReader = missingDataEntryReader; |
| } |
| |
| |
| // Implementations for DataEntryReader. |
| |
| public void read(DataEntry dataEntry) throws IOException |
| { |
| String name = dataEntry.getName(); |
| |
| // Add a directory separator if necessary. |
| if (dataEntry.isDirectory() && |
| name.length() > 0) |
| { |
| name += ClassConstants.PACKAGE_SEPARATOR; |
| } |
| |
| String newName = (String)nameMap.get(name); |
| if (newName != null) |
| { |
| // Remove the directory separator if necessary. |
| if (dataEntry.isDirectory() && |
| newName.length() > 0) |
| { |
| newName = newName.substring(0, newName.length() - 1); |
| } |
| |
| renamedDataEntryReader.read(new RenamedDataEntry(dataEntry, newName)); |
| } |
| else if (missingDataEntryReader != null) |
| { |
| missingDataEntryReader.read(dataEntry); |
| } |
| } |
| } |