1b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/* 2b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ProGuard -- shrinking, optimization, obfuscation, and preverification 3b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * of Java bytecode. 4b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 5b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) 6b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 7b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is free software; you can redistribute it and/or modify it 8b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * under the terms of the GNU General Public License as published by the Free 9b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Software Foundation; either version 2 of the License, or (at your option) 10b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * any later version. 11b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 12b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is distributed in the hope that it will be useful, but WITHOUT 13b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * more details. 16b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 17b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * You should have received a copy of the GNU General Public License along 18b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * with this program; if not, write to the Free Software Foundation, Inc., 19b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 21b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopackage proguard.io; 22b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 23b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport proguard.classfile.ClassConstants; 24b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 25b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport java.io.IOException; 26b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratoimport java.util.Map; 27b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 28b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/** 29b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This DataEntryReader delegates to another DataEntryReader, renaming the 30b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * data entries based on the given map. Entries whose name does not appear 31b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * in the map may be passed to an alternative DataEntryReader. 32b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 33b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @author Eric Lafortune 34b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 35b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopublic class DataEntryRenamer implements DataEntryReader 36b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato{ 37b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private final Map nameMap; 38b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private final DataEntryReader renamedDataEntryReader; 39b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private final DataEntryReader missingDataEntryReader; 40b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 41b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 42b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 43b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates a new DataEntryRenamer. 44b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param nameMap the map from old names to new names. 45b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param renamedDataEntryReader the DataEntryReader to which renamed data 46b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * entries will be passed. 47b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 48b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public DataEntryRenamer(Map nameMap, 49b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato DataEntryReader renamedDataEntryReader) 50b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 51b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this(nameMap, renamedDataEntryReader, null); 52b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 53b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 54b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 55b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 56b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates a new DataEntryRenamer. 57b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param nameMap the map from old names to new names. 58b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param renamedDataEntryReader the DataEntryReader to which renamed data 59b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * entries will be passed. 60b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param missingDataEntryReader the optional DataEntryReader to which data 61b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * entries that can't be renamed will be 62b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * passed. 63b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 64b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public DataEntryRenamer(Map nameMap, 65b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato DataEntryReader renamedDataEntryReader, 66b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato DataEntryReader missingDataEntryReader) 67b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 68b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.nameMap = nameMap; 69b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.renamedDataEntryReader = renamedDataEntryReader; 70b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.missingDataEntryReader = missingDataEntryReader; 71b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 72b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 73b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 74b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for DataEntryReader. 75b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 76b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void read(DataEntry dataEntry) throws IOException 77b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 78b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato String name = dataEntry.getName(); 79b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 80b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Add a directory separator if necessary. 81b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (dataEntry.isDirectory() && 82b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato name.length() > 0) 83b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 84b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato name += ClassConstants.INTERNAL_PACKAGE_SEPARATOR; 85b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 86b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 87b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato String newName = (String)nameMap.get(name); 88b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (newName != null) 89b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 90b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Add remove the directory separator if necessary. 91b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (dataEntry.isDirectory() && 92b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato newName.length() > 0) 93b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 94b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato newName = newName.substring(0, newName.length() - 1); 95b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 96b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 97b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato renamedDataEntryReader.read(new RenamedDataEntry(dataEntry, newName)); 98b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 99b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato else if (missingDataEntryReader != null) 100b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 101b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato missingDataEntryReader.read(dataEntry); 102b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 103b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 104b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato}