1b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/* 2b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ProGuard -- shrinking, optimization, obfuscation, and preverification 3b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * of Java bytecode. 4b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 5b9cc48a43ed984587c939d02fba5316bf5c0df6eYing Wang * Copyright (c) 2002-2013 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 java.io.IOException; 24b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 25b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 26b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/** 27b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This DataEntryReader delegates to one of two other DataEntryReader instances, 28b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * depending on whether the data entry passes through a given data entry filter 29b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * or not. 30b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 31b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @author Eric Lafortune 32b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 33b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopublic class FilteredDataEntryReader implements DataEntryReader 34b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato{ 35b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private final DataEntryFilter dataEntryFilter; 36b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private final DataEntryReader acceptedDataEntryReader; 37b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private final DataEntryReader rejectedDataEntryReader; 38b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 39b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 40b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 41b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates a new FilteredDataEntryReader with only a reader for accepted 42b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * data entries. 43b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param dataEntryFilter the data entry filter. 44b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param acceptedDataEntryReader the DataEntryReader to which the reading 45b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * will be delegated if the filter accepts 46b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * the data entry. May be <code>null</code>. 47b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 48b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public FilteredDataEntryReader(DataEntryFilter dataEntryFilter, 49b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato DataEntryReader acceptedDataEntryReader) 50b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 51b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this(dataEntryFilter, acceptedDataEntryReader, null); 52b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 53b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 54b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 55b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato /** 56b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Creates a new FilteredDataEntryReader. 57b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param dataEntryFilter the data entry filter. 58b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param acceptedDataEntryReader the DataEntryReader to which the reading 59b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * will be delegated if the filter accepts 60b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * the data entry. May be <code>null</code>. 61b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @param rejectedDataEntryReader the DataEntryReader to which the reading 62b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * will be delegated if the filter does not 63b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * accept the data entry. May be 64b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * <code>null</code>. 65b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 66b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public FilteredDataEntryReader(DataEntryFilter dataEntryFilter, 67b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato DataEntryReader acceptedDataEntryReader, 68b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato DataEntryReader rejectedDataEntryReader) 69b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 70b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.dataEntryFilter = dataEntryFilter; 71b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.acceptedDataEntryReader = acceptedDataEntryReader; 72b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.rejectedDataEntryReader = rejectedDataEntryReader; 73b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 74b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 75b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 76b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Implementations for DataEntryReader. 77b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 78b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void read(DataEntry dataEntry) 79b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato throws IOException 80b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 81b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato DataEntryReader dataEntryReader = dataEntryFilter.accepts(dataEntry) ? 82b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato acceptedDataEntryReader : 83b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato rejectedDataEntryReader; 84b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 85b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (dataEntryReader != null) 86b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 87b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato dataEntryReader.read(dataEntry); 88b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 89b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 90b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato} 91