1 /* 2 * Copyright (c) 2017, 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.nashorn.tools.jjs; 27 28 import java.io.IOException; 29 import java.net.URI; 30 import java.nio.file.DirectoryStream; 31 import java.nio.file.Files; 32 import java.nio.file.FileSystem; 33 import java.nio.file.FileSystems; 34 import java.nio.file.Path; 35 import java.util.HashSet; 36 import java.util.Set; 37 import jdk.nashorn.internal.runtime.Context; 38 39 /** 40 * A java packages helper that uses jrt file system. 41 */ 42 final class JrtPackagesHelper extends PackagesHelper { 43 private final FileSystem jrtfs; 44 45 /** 46 * Construct a new JrtPackagesHelper. 47 * 48 * @param context the current Nashorn Context 49 */ 50 JrtPackagesHelper(final Context context) throws IOException { 51 super(context); 52 jrtfs = FileSystems.getFileSystem(URI.create("jrt:/")); 53 } 54 55 @Override 56 void close() throws IOException { 57 } 58 59 @Override 60 Set<String> listPackage(final String pkg) throws IOException { 61 final Set<String> props = new HashSet<>(); 62 // look for the /packages/<package_name> directory 63 Path pkgDir = jrtfs.getPath("/packages/" + pkg); 64 if (Files.exists(pkgDir)) { 65 String pkgSlashName = pkg.replace('.', '/'); 66 try (DirectoryStream<Path> ds = Files.newDirectoryStream(pkgDir)) { 67 // it has module links under which this package occurs 68 for (Path mod : ds) { 69 // get the package directory under /modules 70 Path pkgUnderMod = jrtfs.getPath(mod.toString() + "/" + pkgSlashName); 71 try (DirectoryStream<Path> ds2 = Files.newDirectoryStream(pkgUnderMod)) { 72 for (Path p : ds2) { 73 String str = p.getFileName().toString(); 74 // get rid of ".class", if any 75 if (str.endsWith(".class")) { 76 final String clsName = str.substring(0, str.length() - ".class".length()); 77 if (clsName.indexOf('$') == -1 && isClassAccessible(pkg + "." + clsName)) { 78 props.add(str); 79 } 80 } else if (isPackageAccessible(pkg + "." + str)) { 81 props.add(str); 82 } 83 } 84 } 85 } 86 } 87 } 88 return props; 89 } 90 }