| /* |
| * Copyright (c) 2010, 2015, 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. |
| * |
| * 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. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 4777124 6920545 6911753 8073924 |
| * @summary Verify that all Charset subclasses are available through the API |
| * @modules jdk.charsets |
| */ |
| |
| import java.net.URI; |
| import java.nio.charset.Charset; |
| import java.nio.file.FileSystem; |
| import java.nio.file.FileSystems; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| |
| public class NIOCharsetAvailabilityTest { |
| |
| public static void main(String[] args) throws Exception { |
| |
| // build the set of all Charset subclasses in the |
| // two known charset implementation packages |
| FileSystem fs = FileSystems.getFileSystem(URI.create("jrt:/")); |
| Set<Class> charsets = |
| Stream.concat(Files.walk(fs.getPath("/modules/java.base/sun/nio/cs/")), |
| Files.walk(fs.getPath("/modules/jdk.charsets/sun/nio/cs/ext/"))) |
| .map( p -> p.subpath(2, p.getNameCount()).toString()) |
| .filter( s -> s.indexOf("$") == -1 && s.endsWith(".class")) |
| .map( s -> { |
| try { |
| return Class.forName(s.substring(0, s.length() - 6) |
| .replace('/', '.')); |
| } catch (Exception x) { |
| throw new RuntimeException(x); |
| } |
| }) |
| .filter( clz -> { |
| Class superclazz = clz.getSuperclass(); |
| while (superclazz != null && !superclazz.equals(Object.class)) { |
| if (superclazz.equals(Charset.class)) { |
| return true; |
| } else { |
| superclazz = superclazz.getSuperclass(); |
| } |
| } |
| return false; |
| }) |
| .collect(Collectors.toCollection(HashSet::new)); |
| // remove the charsets that the API says are available |
| Charset.availableCharsets() |
| .values() |
| .stream() |
| .forEach(cs -> { |
| if (!charsets.contains(cs.getClass())) { |
| System.out.println(" missing -> " + cs.getClass()); |
| } |
| charsets.remove(cs.getClass()); |
| }); |
| |
| // remove the known pseudo-charsets that serve only to implement |
| // other charsets, but shouldn't be known to the public |
| charsets.remove(Class.forName("sun.nio.cs.Unicode")); |
| charsets.remove(Class.forName("sun.nio.cs.ext.ISO2022")); |
| charsets.remove(Class.forName("sun.nio.cs.ext.ISO2022_CN_GB")); |
| charsets.remove(Class.forName("sun.nio.cs.ext.ISO2022_CN_CNS")); |
| charsets.remove(Class.forName("sun.nio.cs.ext.JIS_X_0208_MS932")); |
| charsets.remove(Class.forName("sun.nio.cs.ext.JIS_X_0212_MS5022X")); |
| charsets.remove(Class.forName("sun.nio.cs.ext.JIS_X_0208_MS5022X")); |
| try { |
| charsets.remove(Class.forName("sun.nio.cs.ext.JIS_X_0208_Solaris")); |
| charsets.remove(Class.forName("sun.nio.cs.ext.JIS_X_0212_Solaris")); |
| } catch (ClassNotFoundException x) { |
| // these two might be moved into stdcs |
| charsets.remove(Class.forName("sun.nio.cs.JIS_X_0208_Solaris")); |
| charsets.remove(Class.forName("sun.nio.cs.JIS_X_0212_Solaris")); |
| } |
| // report the charsets that are implemented but not available |
| if (charsets.size() > 0) { |
| charsets.stream() |
| .forEach( clz -> |
| System.out.println("Unused Charset subclass: " + clz)); |
| throw new RuntimeException(); |
| } |
| } |
| } |