src/jdk.packager/share/classes/jdk/packager/internal/RedistributableModules.java
author herrick
Fri, 06 Jul 2018 09:27:32 -0400
branchJDK-8200758-branch
changeset 56821 565d54ca1f41
child 56869 41e17fe9fbeb
permissions -rw-r--r--
8206005: Move prototype jpackager from closed sandbox to open sandbox Reviewed-by: asemenyuk
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/*
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 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package jdk.packager.internal;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.UnsupportedEncodingException;
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import java.util.Optional;
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import jdk.tools.jlink.internal.packager.AppRuntimeImageBuilder;
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import java.lang.module.ModuleDescriptor;
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import java.lang.module.ModuleFinder;
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import java.lang.module.ModuleReference;
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import java.lang.module.ModuleReader;
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import java.nio.file.Path;
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import java.util.HashSet;
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import java.util.LinkedHashSet;
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import java.util.List;
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import java.util.NoSuchElementException;
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import java.util.Set;
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public final class RedistributableModules {
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    private static final String JDK_PACKAGER_MODULE = "jdk.packager";
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    private RedistributableModules() {}
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    public static String stripComments(String line) {
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        String result = line.trim();
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        int i = result.indexOf(";");
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        if (i >= 0) {
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          result = result.substring(0, i);
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          result = result.trim();
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        }
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        return result;
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    }
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    public static Set<String> getRedistributableModules(List<Path> modulePath,
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            String filename) {
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        Set<String> result = null;
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        Set<String> addModules = new HashSet<>();
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        Set<String> limitModules = new HashSet<>();
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        ModuleFinder finder = AppRuntimeImageBuilder.moduleFinder(modulePath, addModules, limitModules);
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        Optional<ModuleReference> mref = finder.find(JDK_PACKAGER_MODULE);
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        if (mref.isPresent()) {
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            ModuleReader reader = null;
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            try {
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                reader = mref.get().open();
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            } catch (NoSuchElementException | IOException ex) {
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            }
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            if (reader != null) {
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                Optional<InputStream> stream = null;
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                try {
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                    stream = reader.open(filename);
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                } catch (IOException ex) {
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                }
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                if (stream != null) {
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                    if (stream.isPresent()) {
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                        BufferedReader br = null;
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                        try {
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                            br = new BufferedReader(new InputStreamReader(
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                                    stream.get(), "UTF-8"));
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                        } catch (UnsupportedEncodingException ex) {
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                        }
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                        if (br != null) {
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                            result = new LinkedHashSet();
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                            String line;
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                            try {
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                                while ((line = br.readLine()) != null) {
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                                    String module = stripComments(line);
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                                    if (!module.isEmpty()) {
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                                        result.add(module);
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                                    }
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                                }
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                            } catch (IOException ex) {
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                            }
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                        }
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                    }
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                }
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            }
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        }
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        return result;
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    }
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    public static String getModuleVersion(File moduleFile, List<Path> modulePath,
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            Set<String> addModules, Set<String> limitModules) {
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        String result = "";
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        Module module = new Module(moduleFile);
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        ModuleFinder finder = AppRuntimeImageBuilder.moduleFinder(modulePath,
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                addModules, limitModules);
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        Optional<ModuleReference> mref = finder.find(module.getModuleName());
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        if (mref.isPresent()) {
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            ModuleDescriptor descriptor = mref.get().descriptor();
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            if (descriptor != null) {
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                Optional<ModuleDescriptor.Version> version = descriptor.version();
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                if (version.isPresent()) {
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                    result = version.get().toString();
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                }
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            }
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        }
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        return result;
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    }
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}