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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/*
25 * @test
26 * @summary Test StringSharingPluginTest
27 * @author Jean-Francois Denise
28 * @library ../../lib
29 * @modules java.base/jdk.internal.jimage
30 *          java.base/jdk.internal.jimage.decompressor
31 *          jdk.jlink/jdk.tools.jlink.internal
32 *          jdk.jlink/jdk.tools.jlink.internal.plugins
33 *          jdk.jlink/jdk.tools.jlink.plugin
34 *          jdk.jlink/jdk.tools.jmod
35 *          jdk.jlink/jdk.tools.jimage
36 *          jdk.jdeps/com.sun.tools.classfile
37 *          jdk.compiler
38 * @run build tests.*
39 * @run main StringSharingPluginTest
40 */
41
42import java.io.IOException;
43import java.io.UncheckedIOException;
44import java.nio.ByteBuffer;
45import java.nio.ByteOrder;
46import java.nio.file.Files;
47import java.nio.file.Path;
48import java.util.Arrays;
49import java.util.HashMap;
50import java.util.List;
51import java.util.Map;
52import java.util.function.Consumer;
53
54import jdk.internal.jimage.decompressor.CompressedResourceHeader;
55import jdk.internal.jimage.decompressor.StringSharingDecompressor;
56import jdk.tools.jlink.internal.ResourcePoolManager;
57import jdk.tools.jlink.internal.StringTable;
58import jdk.tools.jlink.internal.plugins.StringSharingPlugin;
59import jdk.tools.jlink.plugin.ResourcePoolEntry;
60import jdk.tools.jlink.plugin.ResourcePool;
61import jdk.tools.jlink.plugin.Plugin;
62import tests.Helper;
63import tests.JImageValidator;
64
65public class StringSharingPluginTest {
66
67    private static int strID = 1;
68
69    public static void main(String[] args) throws Exception {
70        // JPRT not yet ready for jmods
71        Helper helper = Helper.newHelper();
72        if (helper == null) {
73            System.err.println("Test not run, NO jmods directory");
74            return;
75        }
76
77        List<String> classes = Arrays.asList("toto.Main", "toto.com.foo.bar.X");
78        Path compiledClasses = helper.generateModuleCompiledClasses(
79                helper.getJmodSrcDir(), helper.getJmodClassesDir(), "composite2", classes);
80
81        Map<String, Integer> map = new HashMap<>();
82        Map<Integer, String> reversedMap = new HashMap<>();
83
84        ResourcePoolManager resources = new ResourcePoolManager(ByteOrder.nativeOrder(), new StringTable() {
85            @Override
86            public int addString(String str) {
87                Integer id = map.get(str);
88                if (id == null) {
89                    id = strID;
90                    map.put(str, id);
91                    reversedMap.put(id, str);
92                    strID += 1;
93                }
94                return id;
95            }
96
97            @Override
98            public String getString(int id) {
99                throw new UnsupportedOperationException("Not supported yet.");
100            }
101        });
102        Consumer<Path> c = (p) -> {
103            // take only the .class resources.
104            if (Files.isRegularFile(p) && p.toString().endsWith(".class")
105                    && !p.toString().endsWith("module-info.class")) {
106                try {
107                    byte[] content = Files.readAllBytes(p);
108                    String path = p.toString().replace('\\', '/');
109                    path = path.substring("/modules".length());
110                    if (path.charAt(0) != '/') {
111                        path = "/" + path;
112                    }
113                    ResourcePoolEntry res = ResourcePoolEntry.create(path, content);
114                    resources.add(res);
115                } catch (Exception ex) {
116                    throw new RuntimeException(ex);
117                }
118            }
119        };
120        try (java.util.stream.Stream<Path> stream = Files.walk(compiledClasses)) {
121            stream.forEach(c);
122        }
123        Plugin plugin = new StringSharingPlugin();
124        ResourcePoolManager resultMgr = new ResourcePoolManager(resources.byteOrder(), resources.getStringTable());
125        ResourcePool result = plugin.transform(resources.resourcePool(), resultMgr.resourcePoolBuilder());
126
127        if (result.isEmpty()) {
128            throw new AssertionError("No result");
129        }
130
131        result.entries().forEach(res -> {
132            if (res.path().endsWith(".class")) {
133                try {
134                    byte[] uncompacted = StringSharingDecompressor.normalize(reversedMap::get, res.contentBytes(),
135                        CompressedResourceHeader.getSize());
136                    JImageValidator.readClass(uncompacted);
137                } catch (IOException exp) {
138                    throw new UncheckedIOException(exp);
139                }
140            }
141        });
142    }
143}
144