1/*
2 * Copyright (c) 2009, 2014, 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
26package jdk.nio.zipfs;
27
28import java.nio.file.attribute.*;
29import java.io.IOException;
30import java.util.LinkedHashMap;
31import java.util.Map;
32
33/*
34 * @author  Xueming Shen, Rajendra Gutupalli, Jaya Hangal
35 */
36
37class ZipFileAttributeView implements BasicFileAttributeView
38{
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    {
90        return path.getAttributes();
91    }
92
93    @Override
94    public void setTimes(FileTime lastModifiedTime,
95                         FileTime lastAccessTime,
96                         FileTime createTime)
97        throws IOException
98    {
99        path.setTimes(lastModifiedTime, lastAccessTime, createTime);
100    }
101
102    void setAttribute(String attribute, Object value)
103        throws IOException
104    {
105        try {
106            if (AttrID.valueOf(attribute) == AttrID.lastModifiedTime)
107                setTimes ((FileTime)value, null, null);
108            if (AttrID.valueOf(attribute) == AttrID.lastAccessTime)
109                setTimes (null, (FileTime)value, null);
110            if (AttrID.valueOf(attribute) == AttrID.creationTime)
111                setTimes (null, null, (FileTime)value);
112            return;
113        } catch (IllegalArgumentException x) {}
114        throw new UnsupportedOperationException("'" + attribute +
115            "' is unknown or read-only attribute");
116    }
117
118    Map<String, Object> readAttributes(String attributes)
119        throws IOException
120    {
121        ZipFileAttributes zfas = readAttributes();
122        LinkedHashMap<String, Object> map = new LinkedHashMap<>();
123        if ("*".equals(attributes)) {
124            for (AttrID id : AttrID.values()) {
125                try {
126                    map.put(id.name(), attribute(id, zfas));
127                } catch (IllegalArgumentException x) {}
128            }
129        } else {
130            String[] as = attributes.split(",");
131            for (String a : as) {
132                try {
133                    map.put(a, attribute(AttrID.valueOf(a), zfas));
134                } catch (IllegalArgumentException x) {}
135            }
136        }
137        return map;
138    }
139
140    Object attribute(AttrID id, ZipFileAttributes zfas) {
141        switch (id) {
142        case size:
143            return zfas.size();
144        case creationTime:
145            return zfas.creationTime();
146        case lastAccessTime:
147            return zfas.lastAccessTime();
148        case lastModifiedTime:
149            return zfas.lastModifiedTime();
150        case isDirectory:
151            return zfas.isDirectory();
152        case isRegularFile:
153            return zfas.isRegularFile();
154        case isSymbolicLink:
155            return zfas.isSymbolicLink();
156        case isOther:
157            return zfas.isOther();
158        case fileKey:
159            return zfas.fileKey();
160        case compressedSize:
161            if (isZipView)
162                return zfas.compressedSize();
163            break;
164        case crc:
165            if (isZipView)
166                return zfas.crc();
167            break;
168        case method:
169            if (isZipView)
170                return zfas.method();
171            break;
172        }
173        return null;
174    }
175}
176