1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package jdk.internal.jrtfs; 26 27 import java.nio.file.attribute.BasicFileAttributes; 28 import java.nio.file.attribute.FileTime; 29 import java.util.Formatter; 30 import jdk.internal.jimage.ImageReader.Node; 31 32 /** 33 * File attributes implementation for jrt image file system. 34 * 35 * @implNote This class needs to maintain JDK 8 source compatibility. 36 * 37 * It is used internally in the JDK to implement jimage/jrtfs access, 38 * but also compiled and delivered as part of the jrtfs.jar to support access 39 * to the jimage file provided by the shipped JDK by tools running on JDK 8. 40 */ 41 final class JrtFileAttributes implements BasicFileAttributes { 42 43 private final Node node; 44 45 JrtFileAttributes(Node node) { 46 this.node = node; 47 } 48 49 ///////// basic attributes /////////// 50 @Override 51 public FileTime creationTime() { 52 return node.creationTime(); 53 } 54 55 @Override 56 public boolean isDirectory() { 57 return node.isDirectory(); 58 } 59 60 @Override 61 public boolean isOther() { 62 return false; 63 } 64 65 @Override 66 public boolean isRegularFile() { 67 return !isDirectory(); 68 } 69 70 @Override 71 public FileTime lastAccessTime() { 72 return node.lastAccessTime(); 73 } 74 75 @Override 76 public FileTime lastModifiedTime() { 77 return node.lastModifiedTime(); 78 } 79 80 @Override 81 public long size() { 82 return node.size(); 83 } 84 85 @Override 86 public boolean isSymbolicLink() { 87 return node.isLink(); 88 } 89 90 @Override 91 public Object fileKey() { 92 return node.resolveLink(true); 93 } 94 95 ///////// jrtfs specific attributes /////////// 96 /** 97 * Compressed resource file. If not available or not applicable, 0L is 98 * returned. 99 * 100 * @return the compressed resource size for compressed resources. 101 */ 102 public long compressedSize() { 103 return node.compressedSize(); 104 } 105 106 /** 107 * "file" extension of a file resource. 108 * 109 * @return extension string for the file resource 110 */ 111 public String extension() { 112 return node.extension(); 113 } 114 115 @Override 116 public final String toString() { 117 StringBuilder sb = new StringBuilder(1024); 118 try (Formatter fm = new Formatter(sb)) { 119 if (creationTime() != null) { 120 fm.format(" creationTime : %tc%n", creationTime().toMillis()); 121 } else { 122 fm.format(" creationTime : null%n"); 123 } 124 if (lastAccessTime() != null) { 125 fm.format(" lastAccessTime : %tc%n", lastAccessTime().toMillis()); 126 } else { 127 fm.format(" lastAccessTime : null%n"); 128 } 129 fm.format(" lastModifiedTime: %tc%n", lastModifiedTime().toMillis()); 130 fm.format(" isRegularFile : %b%n", isRegularFile()); 131 fm.format(" isDirectory : %b%n", isDirectory()); 132 fm.format(" isSymbolicLink : %b%n", isSymbolicLink()); 133 fm.format(" isOther : %b%n", isOther()); 134 fm.format(" fileKey : %s%n", fileKey()); 135 fm.format(" size : %d%n", size()); 136 fm.format(" compressedSize : %d%n", compressedSize()); 137 fm.format(" extension : %s%n", extension()); 138 } 139 return sb.toString(); 140 } 141 }