1 /* 2 * ProGuard -- shrinking, optimization, obfuscation, and preverification 3 * of Java bytecode. 4 * 5 * Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu) 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the Free 9 * Software Foundation; either version 2 of the License, or (at your option) 10 * any later version. 11 * 12 * This program is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15 * more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, write to the Free Software Foundation, Inc., 19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 package proguard.io; 22 23 import java.io.*; 24 25 26 /** 27 * This class can read a given file or directory, recursively, applying a given 28 * DataEntryReader to all files it comes across. 29 * 30 * @author Eric Lafortune 31 */ 32 public class DirectoryPump implements DataEntryPump 33 { 34 private final File directory; 35 36 DirectoryPump(File directory)37 public DirectoryPump(File directory) 38 { 39 this.directory = directory; 40 } 41 42 43 // Implementations for DataEntryPump. 44 pumpDataEntries(DataEntryReader dataEntryReader)45 public void pumpDataEntries(DataEntryReader dataEntryReader) 46 throws IOException 47 { 48 if (!directory.exists()) 49 { 50 throw new IOException("No such file or directory"); 51 } 52 53 readFiles(directory, dataEntryReader); 54 } 55 56 57 /** 58 * Reads the given subdirectory recursively, applying the given DataEntryReader 59 * to all files that are encountered. 60 */ readFiles(File file, DataEntryReader dataEntryReader)61 private void readFiles(File file, DataEntryReader dataEntryReader) 62 throws IOException 63 { 64 // Pass the file data entry to the reader. 65 dataEntryReader.read(new FileDataEntry(directory, file)); 66 67 if (file.isDirectory()) 68 { 69 // Recurse into the subdirectory. 70 File[] files = file.listFiles(); 71 72 for (int index = 0; index < files.length; index++) 73 { 74 readFiles(files[index], dataEntryReader); 75 } 76 } 77 } 78 } 79