| /* |
| * Copyright (c) 2014, 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. |
| * |
| * 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. |
| */ |
| |
| package com.sun.tools.javac.platform; |
| |
| import java.io.IOException; |
| import java.nio.file.DirectoryStream; |
| import java.nio.file.FileSystem; |
| import java.nio.file.FileSystems; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeSet; |
| |
| import javax.annotation.processing.Processor; |
| |
| import com.sun.source.util.Plugin; |
| import com.sun.tools.javac.jvm.Target; |
| |
| /** PlatformProvider for JDK N. |
| * |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| */ |
| public class JDKPlatformProvider implements PlatformProvider { |
| |
| @Override |
| public Iterable<String> getSupportedPlatformNames() { |
| return SUPPORTED_JAVA_PLATFORM_VERSIONS; |
| } |
| |
| @Override |
| public PlatformDescription getPlatform(String platformName, String options) { |
| return new PlatformDescriptionImpl(platformName); |
| } |
| |
| private static final String[] symbolFileLocation = { "lib", "ct.sym" }; |
| |
| private static final Set<String> SUPPORTED_JAVA_PLATFORM_VERSIONS; |
| |
| static { |
| SUPPORTED_JAVA_PLATFORM_VERSIONS = new TreeSet<>(); |
| Path ctSymFile = findCtSym(); |
| if (Files.exists(ctSymFile)) { |
| try (FileSystem fs = FileSystems.newFileSystem(ctSymFile, null); |
| DirectoryStream<Path> dir = |
| Files.newDirectoryStream(fs.getRootDirectories().iterator().next())) { |
| for (Path section : dir) { |
| for (char ver : section.getFileName().toString().toCharArray()) { |
| String verString = Character.toString(ver); |
| Target t = Target.lookup(verString); |
| |
| if (t != null) { |
| SUPPORTED_JAVA_PLATFORM_VERSIONS.add(targetNumericVersion(t)); |
| } |
| } |
| } |
| } catch (IOException ex) { |
| } |
| } |
| SUPPORTED_JAVA_PLATFORM_VERSIONS.add(targetNumericVersion(Target.DEFAULT)); |
| } |
| |
| private static String targetNumericVersion(Target target) { |
| return Integer.toString(target.ordinal() - Target.JDK1_1.ordinal() + 1); |
| } |
| |
| static class PlatformDescriptionImpl implements PlatformDescription { |
| |
| private final Map<Path, FileSystem> ctSym2FileSystem = new HashMap<>(); |
| private final String version; |
| |
| PlatformDescriptionImpl(String version) { |
| this.version = version; |
| } |
| |
| @Override |
| public Collection<Path> getPlatformPath() { |
| if (Target.lookup(version) == Target.DEFAULT) { |
| return null; |
| } |
| |
| List<Path> paths = new ArrayList<>(); |
| Path file = findCtSym(); |
| // file == ${jdk.home}/lib/ct.sym |
| if (Files.exists(file)) { |
| FileSystem fs = ctSym2FileSystem.get(file); |
| if (fs == null) { |
| try { |
| ctSym2FileSystem.put(file, fs = FileSystems.newFileSystem(file, null)); |
| } catch (IOException ex) { |
| throw new IllegalStateException(ex); |
| } |
| } |
| Path root = fs.getRootDirectories().iterator().next(); |
| try (DirectoryStream<Path> dir = Files.newDirectoryStream(root)) { |
| for (Path section : dir) { |
| if (section.getFileName().toString().contains(version)) { |
| paths.add(section); |
| } |
| } |
| } catch (IOException ex) { |
| throw new IllegalStateException(ex); |
| } |
| } else { |
| throw new IllegalStateException("Cannot find ct.sym!"); |
| } |
| return paths; |
| } |
| |
| @Override |
| public String getSourceVersion() { |
| return version; |
| } |
| |
| @Override |
| public String getTargetVersion() { |
| return version; |
| } |
| |
| @Override |
| public List<PluginInfo<Processor>> getAnnotationProcessors() { |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public List<PluginInfo<Plugin>> getPlugins() { |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public List<String> getAdditionalOptions() { |
| return Collections.emptyList(); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| for (FileSystem fs : ctSym2FileSystem.values()) { |
| fs.close(); |
| } |
| ctSym2FileSystem.clear(); |
| } |
| |
| } |
| |
| static Path findCtSym() { |
| String javaHome = System.getProperty("java.home"); |
| Path file = Paths.get(javaHome); |
| // file == ${jdk.home} |
| for (String name : symbolFileLocation) |
| file = file.resolve(name); |
| return file; |
| } |
| |
| } |