1 /* 2 * Copyright (c) 2016, 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 build.tools.jigsaw; 27 28 import java.io.ByteArrayOutputStream; 29 import java.io.IOException; 30 import java.io.InputStream; 31 import java.lang.module.ModuleFinder; 32 import java.lang.module.ModuleReference; 33 import java.nio.file.DirectoryStream; 34 import java.nio.file.Files; 35 import java.nio.file.Path; 36 import java.nio.file.Paths; 37 import java.util.Optional; 38 import java.util.Set; 39 40 import jdk.internal.module.ModuleInfoExtender; 41 42 /** 43 * Adds the Packages class file attribute to each module-info.class in an 44 * exploded build. 45 */ 46 47 public class AddPackagesAttribute { 48 49 public static void main(String[] args) throws IOException { 50 51 if (args.length != 1) { 52 System.err.println("Usage AddPackagesAttribute exploded-java-home"); 53 System.exit(-1); 54 } 55 56 String home = args[0]; 57 Path dir = Paths.get(home, "modules"); 58 59 ModuleFinder finder = ModuleFinder.of(dir); 60 61 try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir)) { 62 for (Path entry : stream) { 63 Path mi = entry.resolve("module-info.class"); 64 if (Files.isRegularFile(mi)) { 65 String mn = entry.getFileName().toString(); 66 Optional<ModuleReference> omref = finder.find(mn); 67 if (omref.isPresent()) { 68 Set<String> packages = omref.get().descriptor().conceals(); 69 addPackagesAttribute(mi, packages); 70 } 71 } 72 } 73 } 74 } 75 76 static void addPackagesAttribute(Path mi, Set<String> packages) throws IOException { 77 byte[] bytes; 78 try (InputStream in = Files.newInputStream(mi)) { 79 ModuleInfoExtender extender = ModuleInfoExtender.newExtender(in); 80 extender.conceals(packages); 81 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 82 extender.write(baos); 83 bytes = baos.toByteArray(); 84 } 85 86 Files.write(mi, bytes); 87 } 88 89 }