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 proguard.classfile.ClassConstants; 24 25 import java.io.*; 26 import java.util.zip.*; 27 28 /** 29 * This <code>DataEntry</code> represents a ZIP entry. 30 * 31 * @author Eric Lafortune 32 */ 33 public class ZipDataEntry implements DataEntry 34 { 35 private final DataEntry parent; 36 private final ZipEntry zipEntry; 37 private ZipInputStream zipInputStream; 38 private InputStream bufferedInputStream; 39 40 ZipDataEntry(DataEntry parent, ZipEntry zipEntry, ZipInputStream zipInputStream)41 public ZipDataEntry(DataEntry parent, 42 ZipEntry zipEntry, 43 ZipInputStream zipInputStream) 44 { 45 this.parent = parent; 46 this.zipEntry = zipEntry; 47 this.zipInputStream = zipInputStream; 48 } 49 50 51 // Implementations for DataEntry. 52 getName()53 public String getName() 54 { 55 // Get the right separators. 56 String name = zipEntry.getName() 57 .replace(File.separatorChar, ClassConstants.PACKAGE_SEPARATOR); 58 59 // Chop the trailing directory slash, if any. 60 int length = name.length(); 61 return length > 0 && 62 name.charAt(length-1) == ClassConstants.PACKAGE_SEPARATOR ? 63 name.substring(0, length -1) : 64 name; 65 } 66 67 isDirectory()68 public boolean isDirectory() 69 { 70 return zipEntry.isDirectory(); 71 } 72 73 getInputStream()74 public InputStream getInputStream() throws IOException 75 { 76 if (bufferedInputStream == null) 77 { 78 bufferedInputStream = new BufferedInputStream(zipInputStream); 79 } 80 81 return bufferedInputStream; 82 } 83 84 closeInputStream()85 public void closeInputStream() throws IOException 86 { 87 zipInputStream.closeEntry(); 88 zipInputStream = null; 89 bufferedInputStream = null; 90 } 91 92 getParent()93 public DataEntry getParent() 94 { 95 return parent; 96 } 97 98 99 // Implementations for Object. 100 toString()101 public String toString() 102 { 103 return parent.toString() + ':' + getName(); 104 } 105 } 106