1 /*
   2  * Copyright (c) 2015, 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.io.IOException;
  28 import java.nio.file.attribute.BasicFileAttributes;
  29 import java.nio.file.attribute.FileTime;
  30 import jdk.internal.jrtfs.JrtExplodedFileSystem.Node;
  31 
  32 /**
  33  * jrt file system attributes implementation on top of 'exploded file system'
  34  * Node.
  35  *
  36  * @implNote This class needs to maintain JDK 8 source compatibility.
  37  *
  38  * It is used internally in the JDK to implement jimage/jrtfs access,
  39  * but also compiled and delivered as part of the jrtfs.jar to support access
  40  * to the jimage file provided by the shipped JDK by tools running on JDK 8.
  41  */
  42 final class JrtExplodedFileAttributes extends AbstractJrtFileAttributes {
  43 
  44     private final Node node;
  45     private final BasicFileAttributes attrs;
  46 
  47     JrtExplodedFileAttributes(Node node) throws IOException {
  48         this.node = node;
  49         this.attrs = node.getBasicAttrs();
  50     }
  51 
  52     @Override
  53     public FileTime creationTime() {
  54         return attrs.creationTime();
  55     }
  56 
  57     @Override
  58     public boolean isDirectory() {
  59         return node.isDirectory();
  60     }
  61 
  62     @Override
  63     public boolean isOther() {
  64         return false;
  65     }
  66 
  67     @Override
  68     public boolean isRegularFile() {
  69         return node.isFile();
  70     }
  71 
  72     @Override
  73     public FileTime lastAccessTime() {
  74         return attrs.lastAccessTime();
  75     }
  76 
  77     @Override
  78     public FileTime lastModifiedTime() {
  79         return attrs.lastModifiedTime();
  80     }
  81 
  82     @Override
  83     public long size() {
  84         return isRegularFile() ? attrs.size() : 0L;
  85     }
  86 
  87     @Override
  88     public boolean isSymbolicLink() {
  89         return node.isLink();
  90     }
  91 
  92     @Override
  93     public Object fileKey() {
  94         return node.resolveLink(true);
  95     }
  96 
  97     @Override
  98     public long compressedSize() {
  99         return 0L;
 100     }
 101 
 102     @Override
 103     public String extension() {
 104         return node.getExtension();
 105     }
 106 }