1 /*
2 * Copyright (c) 2009, 2018, 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
26 package jdk.nio.zipfs;
27
28 import java.io.IOException;
29 import java.nio.file.attribute.BasicFileAttributeView;
30 import java.nio.file.attribute.FileAttributeView;
31 import java.nio.file.attribute.FileTime;
32 import java.util.LinkedHashMap;
33 import java.util.Map;
34
35 /**
36 * @author Xueming Shen, Rajendra Gutupalli, Jaya Hangal
37 */
38 class ZipFileAttributeView implements BasicFileAttributeView {
39 private static enum AttrID {
40 size,
41 creationTime,
42 lastAccessTime,
43 lastModifiedTime,
44 isDirectory,
45 isRegularFile,
46 isSymbolicLink,
47 isOther,
48 fileKey,
49 compressedSize,
50 crc,
51 method
52 };
53
54 private final ZipPath path;
55 private final boolean isZipView;
56
57 private ZipFileAttributeView(ZipPath path, boolean isZipView) {
58 this.path = path;
59 this.isZipView = isZipView;
60 }
61
62 @SuppressWarnings("unchecked") // Cast to V
63 static <V extends FileAttributeView> V get(ZipPath path, Class<V> type) {
64 if (type == null)
65 throw new NullPointerException();
66 if (type == BasicFileAttributeView.class)
67 return (V)new ZipFileAttributeView(path, false);
68 if (type == ZipFileAttributeView.class)
69 return (V)new ZipFileAttributeView(path, true);
70 return null;
71 }
72
73 static ZipFileAttributeView get(ZipPath path, String type) {
74 if (type == null)
75 throw new NullPointerException();
76 if (type.equals("basic"))
77 return new ZipFileAttributeView(path, false);
78 if (type.equals("zip"))
79 return new ZipFileAttributeView(path, true);
80 return null;
81 }
82
83 @Override
84 public String name() {
85 return isZipView ? "zip" : "basic";
86 }
87
88 public ZipFileAttributes readAttributes() throws IOException {
89 return path.getAttributes();
90 }
91
92 @Override
93 public void setTimes(FileTime lastModifiedTime,
94 FileTime lastAccessTime,
95 FileTime createTime)
96 throws IOException
97 {
98 path.setTimes(lastModifiedTime, lastAccessTime, createTime);
99 }
100
101 void setAttribute(String attribute, Object value)
102 throws IOException
103 {
104 try {
105 if (AttrID.valueOf(attribute) == AttrID.lastModifiedTime)
106 setTimes((FileTime)value, null, null);
107 if (AttrID.valueOf(attribute) == AttrID.lastAccessTime)
108 setTimes(null, (FileTime)value, null);
109 if (AttrID.valueOf(attribute) == AttrID.creationTime)
110 setTimes(null, null, (FileTime)value);
111 return;
112 } catch (IllegalArgumentException x) {}
113 throw new UnsupportedOperationException("'" + attribute +
114 "' is unknown or read-only attribute");
115 }
116
117 Map<String, Object> readAttributes(String attributes)
118 throws IOException
119 {
120 ZipFileAttributes zfas = readAttributes();
121 LinkedHashMap<String, Object> map = new LinkedHashMap<>();
122 if ("*".equals(attributes)) {
123 for (AttrID id : AttrID.values()) {
124 try {
125 map.put(id.name(), attribute(id, zfas));
126 } catch (IllegalArgumentException x) {}
127 }
128 } else {
129 String[] as = attributes.split(",");
130 for (String a : as) {
131 try {
132 map.put(a, attribute(AttrID.valueOf(a), zfas));
133 } catch (IllegalArgumentException x) {}
134 }
135 }
136 return map;
137 }
138
139 Object attribute(AttrID id, ZipFileAttributes zfas) {
140 switch (id) {
141 case size:
142 return zfas.size();
143 case creationTime:
144 return zfas.creationTime();
145 case lastAccessTime:
146 return zfas.lastAccessTime();
147 case lastModifiedTime:
148 return zfas.lastModifiedTime();
149 case isDirectory:
150 return zfas.isDirectory();
151 case isRegularFile:
152 return zfas.isRegularFile();
153 case isSymbolicLink:
154 return zfas.isSymbolicLink();
155 case isOther:
156 return zfas.isOther();
157 case fileKey:
158 return zfas.fileKey();
159 case compressedSize:
160 if (isZipView)
161 return zfas.compressedSize();
162 break;
163 case crc:
164 if (isZipView)
165 return zfas.crc();
166 break;
167 case method:
168 if (isZipView)
169 return zfas.method();
170 break;
171 }
172 return null;
173 }
174 }