/*
* Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package jdk.nashorn.tools.jjs;
import java.io.IOException;
import java.net.URI;
import java.nio.file.DirectoryStream;
import java.nio.file.Files;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Path;
import java.util.HashSet;
import java.util.Set;
import jdk.nashorn.internal.runtime.Context;
/**
* A java packages helper that uses jrt file system.
*/
final class JrtPackagesHelper extends PackagesHelper {
private final FileSystem jrtfs;
/**
* Construct a new JrtPackagesHelper.
*
* @param context the current Nashorn Context
*/
JrtPackagesHelper(final Context context) throws IOException {
super(context);
jrtfs = FileSystems.getFileSystem(URI.create("jrt:/"));
}
@Override
void close() throws IOException {
}
@Override
Set<String> listPackage(final String pkg) throws IOException {
final Set<String> props = new HashSet<>();
// look for the /packages/<package_name> directory
Path pkgDir = jrtfs.getPath("/packages/" + pkg);
if (Files.exists(pkgDir)) {
String pkgSlashName = pkg.replace('.', '/');
try (DirectoryStream<Path> ds = Files.newDirectoryStream(pkgDir)) {
// it has module links under which this package occurs
for (Path mod : ds) {
// get the package directory under /modules
Path pkgUnderMod = jrtfs.getPath(mod.toString() + "/" + pkgSlashName);
try (DirectoryStream<Path> ds2 = Files.newDirectoryStream(pkgUnderMod)) {
for (Path p : ds2) {
String str = p.getFileName().toString();
// get rid of ".class", if any
if (str.endsWith(".class")) {
final String clsName = str.substring(0, str.length() - ".class".length());
if (clsName.indexOf('$') == -1 && isClassAccessible(pkg + "." + clsName)) {
/**代码未完, 请加载全部代码(NowJava.com).**/