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.nio.file.attribute.GroupPrincipal;
33 import java.nio.file.attribute.PosixFileAttributeView;
34 import java.nio.file.attribute.PosixFilePermission;
35 import java.nio.file.attribute.UserPrincipal;
36 import java.util.LinkedHashMap;
37 import java.util.Map;
38 import java.util.Set;
39
40 /**
41 * @author Xueming Shen, Rajendra Gutupalli, Jaya Hangal
42 */
43 class ZipFileAttributeView implements PosixFileAttributeView {
44 private static enum AttrID {
45 size,
46 creationTime,
47 lastAccessTime,
48 lastModifiedTime,
49 isDirectory,
50 isRegularFile,
51 isSymbolicLink,
52 isOther,
53 fileKey,
54 compressedSize,
55 crc,
56 method,
57 permissions
58 };
59
60 private static enum ViewType {
61 zip,
62 posix,
63 basic
64 }
65
66 private final ZipPath path;
67 private final ViewType type;
68
69 private ZipFileAttributeView(ZipPath path, ViewType type) {
70 this.path = path;
71 this.type = type;
72 }
73
74 @SuppressWarnings("unchecked") // Cast to V
75 static <V extends FileAttributeView> V get(ZipPath path, Class<V> type) {
76 if (type == null)
77 throw new NullPointerException();
78 if (type == BasicFileAttributeView.class)
79 return (V)new ZipFileAttributeView(path, ViewType.basic);
80 if (type == PosixFileAttributeView.class)
81 return (V)new ZipFileAttributeView(path, ViewType.posix);
82 if (type == ZipFileAttributeView.class)
83 return (V)new ZipFileAttributeView(path, ViewType.zip);
84 return null;
85 }
86
87 static ZipFileAttributeView get(ZipPath path, String type) {
88 if (type == null)
89 throw new NullPointerException();
90 if (type.equals("basic"))
91 return new ZipFileAttributeView(path, ViewType.basic);
92 if (type.equals("posix"))
93 return new ZipFileAttributeView(path, ViewType.posix);
94 if (type.equals("zip"))
95 return new ZipFileAttributeView(path, ViewType.zip);
96 return null;
97 }
98
99 @Override
100 public String name() {
101 switch (type) {
102 case zip:
103 return "zip";
104 case posix:
105 return "posix";
106 case basic:
107 default:
108 return "basic";
109 }
110 }
111
112 public ZipFileAttributes readAttributes() throws IOException {
113 return path.getAttributes();
114 }
115
116 @Override
117 public void setTimes(FileTime lastModifiedTime,
118 FileTime lastAccessTime,
119 FileTime createTime)
120 throws IOException
121 {
122 path.setTimes(lastModifiedTime, lastAccessTime, createTime);
123 }
124
125 @Override
126 public UserPrincipal getOwner() throws IOException {
127 throw new UnsupportedOperationException("ZipFileSystem does not support getOwner.");
128 }
129
130 @Override
131 public void setOwner(UserPrincipal owner) throws IOException {
132 throw new UnsupportedOperationException("ZipFileSystem does not support setOwner.");
133 }
134
135 @Override
136 public void setPermissions(Set<PosixFilePermission> perms) throws IOException {
137 path.setPermissions(perms);
138 }
139
140 @Override
141 public void setGroup(GroupPrincipal group) throws IOException {
142 throw new UnsupportedOperationException("ZipFileSystem does not support setGroup.");
143 }
144
145 @SuppressWarnings("unchecked")
146 void setAttribute(String attribute, Object value)
147 throws IOException
148 {
149 try {
150 if (AttrID.valueOf(attribute) == AttrID.lastModifiedTime)
151 setTimes((FileTime)value, null, null);
152 if (AttrID.valueOf(attribute) == AttrID.lastAccessTime)
153 setTimes(null, (FileTime)value, null);
154 if (AttrID.valueOf(attribute) == AttrID.creationTime)
155 setTimes(null, null, (FileTime)value);
156 if (AttrID.valueOf(attribute) == AttrID.permissions)
157 setPermissions((Set<PosixFilePermission>)value);
158 return;
159 } catch (IllegalArgumentException x) {
160 throw new UnsupportedOperationException("'" + attribute +
161 "' is unknown or read-only attribute");
162 }
163 }
164
165 Map<String, Object> readAttributes(String attributes)
166 throws IOException
167 {
168 ZipFileAttributes zfas = readAttributes();
169 LinkedHashMap<String, Object> map = new LinkedHashMap<>();
170 if ("*".equals(attributes)) {
171 for (AttrID id : AttrID.values()) {
172 try {
173 map.put(id.name(), attribute(id, zfas));
174 } catch (IllegalArgumentException x) {}
175 }
176 } else {
177 String[] as = attributes.split(",");
178 for (String a : as) {
179 try {
180 map.put(a, attribute(AttrID.valueOf(a), zfas));
181 } catch (IllegalArgumentException x) {}
182 }
183 }
184 return map;
185 }
186
187 private Object attribute(AttrID id, ZipFileAttributes zfas) {
188 switch (id) {
189 case size:
190 return zfas.size();
191 case creationTime:
192 return zfas.creationTime();
193 case lastAccessTime:
194 return zfas.lastAccessTime();
195 case lastModifiedTime:
196 return zfas.lastModifiedTime();
197 case isDirectory:
198 return zfas.isDirectory();
199 case isRegularFile:
200 return zfas.isRegularFile();
201 case isSymbolicLink:
202 return zfas.isSymbolicLink();
203 case isOther:
204 return zfas.isOther();
205 case fileKey:
206 return zfas.fileKey();
207 case permissions:
208 if (type == ViewType.posix || type == ViewType.zip) {
209 try {
210 return zfas.permissions();
211 } catch (UnsupportedOperationException e) {
212 return null;
213 }
214 }
215 break;
216 case compressedSize:
217 if (type == ViewType.zip) {
218 return zfas.compressedSize();
219 }
220 break;
221 case crc:
222 if (type == ViewType.zip) {
223 return zfas.crc();
224 }
225 break;
226 case method:
227 if (type == ViewType.zip) {
228 return zfas.method();
229 }
230 break;
231 }
232 return null;
233 }
234 }