111 lines
4.7 KiB
Java
111 lines
4.7 KiB
Java
/*
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* Copyright (c) 2010, 2015, 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.
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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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/*
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* @test
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* @bug 4777124 6920545 6911753 8073924
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* @summary Verify that all Charset subclasses are available through the API
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* @modules jdk.charsets
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*/
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import java.net.URI;
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import java.nio.charset.Charset;
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import java.nio.file.FileSystem;
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import java.nio.file.FileSystems;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.HashSet;
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import java.util.Set;
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import java.util.stream.Collectors;
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import java.util.stream.Stream;
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public class NIOCharsetAvailabilityTest {
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public static void main(String[] args) throws Exception {
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// build the set of all Charset subclasses in the
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// two known charset implementation packages
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FileSystem fs = FileSystems.getFileSystem(URI.create("jrt:/"));
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Set<Class> charsets =
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Stream.concat(Files.walk(fs.getPath("/modules/java.base/sun/nio/cs/")),
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Files.walk(fs.getPath("/modules/jdk.charsets/sun/nio/cs/ext/")))
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.map( p -> p.subpath(2, p.getNameCount()).toString())
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.filter( s -> s.indexOf("$") == -1 && s.endsWith(".class"))
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.map( s -> {
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try {
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return Class.forName(s.substring(0, s.length() - 6)
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.replace('/', '.'));
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} catch (Exception x) {
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throw new RuntimeException(x);
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}
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})
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.filter( clz -> {
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Class superclazz = clz.getSuperclass();
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while (superclazz != null && !superclazz.equals(Object.class)) {
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if (superclazz.equals(Charset.class)) {
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return true;
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} else {
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superclazz = superclazz.getSuperclass();
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}
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}
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return false;
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})
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.collect(Collectors.toCollection(HashSet::new));
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// remove the charsets that the API says are available
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Charset.availableCharsets()
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.values()
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.stream()
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.forEach(cs -> {
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if (!charsets.contains(cs.getClass())) {
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System.out.println(" missing -> " + cs.getClass());
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}
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charsets.remove(cs.getClass());
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});
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// remove the known pseudo-charsets that serve only to implement
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// other charsets, but shouldn't be known to the public
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charsets.remove(Class.forName("sun.nio.cs.Unicode"));
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charsets.remove(Class.forName("sun.nio.cs.ext.ISO2022"));
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charsets.remove(Class.forName("sun.nio.cs.ext.ISO2022_CN_GB"));
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charsets.remove(Class.forName("sun.nio.cs.ext.ISO2022_CN_CNS"));
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charsets.remove(Class.forName("sun.nio.cs.ext.JIS_X_0208_MS932"));
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charsets.remove(Class.forName("sun.nio.cs.ext.JIS_X_0212_MS5022X"));
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charsets.remove(Class.forName("sun.nio.cs.ext.JIS_X_0208_MS5022X"));
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try {
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charsets.remove(Class.forName("sun.nio.cs.ext.JIS_X_0208_Solaris"));
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charsets.remove(Class.forName("sun.nio.cs.ext.JIS_X_0212_Solaris"));
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} catch (ClassNotFoundException x) {
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// these two might be moved into stdcs
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charsets.remove(Class.forName("sun.nio.cs.JIS_X_0208_Solaris"));
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charsets.remove(Class.forName("sun.nio.cs.JIS_X_0212_Solaris"));
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}
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// report the charsets that are implemented but not available
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if (charsets.size() > 0) {
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charsets.stream()
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.forEach( clz ->
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System.out.println("Unused Charset subclass: " + clz));
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throw new RuntimeException();
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}
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}
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}
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