| /* |
| * Copyright (c) 2014, 2018, 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.io.PrintWriter; |
| import java.net.URI; |
| import java.nio.charset.Charset; |
| 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.nio.file.ProviderNotFoundException; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.EnumSet; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.NoSuchElementException; |
| import java.util.Set; |
| import java.util.TreeSet; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| |
| import javax.annotation.processing.Processor; |
| import javax.tools.ForwardingJavaFileObject; |
| import javax.tools.JavaFileManager; |
| import javax.tools.JavaFileManager.Location; |
| import javax.tools.JavaFileObject; |
| import javax.tools.JavaFileObject.Kind; |
| import javax.tools.StandardJavaFileManager; |
| import javax.tools.StandardLocation; |
| |
| import com.sun.source.util.Plugin; |
| import com.sun.tools.javac.file.CacheFSInfo; |
| import com.sun.tools.javac.file.JavacFileManager; |
| import com.sun.tools.javac.jvm.Target; |
| import com.sun.tools.javac.util.Context; |
| import com.sun.tools.javac.util.Log; |
| import com.sun.tools.javac.util.StringUtils; |
| |
| /** 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; |
| public static final Comparator<String> NUMERICAL_COMPARATOR = (s1, s2) -> { |
| int i1; |
| try { |
| i1 = Integer.parseInt(s1); |
| } catch (NumberFormatException ex) { |
| i1 = Integer.MAX_VALUE; |
| } |
| int i2; |
| try { |
| i2 = Integer.parseInt(s2); |
| } catch (NumberFormatException ex) { |
| i2 = Integer.MAX_VALUE; |
| } |
| return i1 != i2 ? i1 - i2 : s1.compareTo(s2); |
| }; |
| |
| static { |
| SUPPORTED_JAVA_PLATFORM_VERSIONS = new TreeSet<>(NUMERICAL_COMPARATOR); |
| 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) { |
| if (section.getFileName().toString().contains("-")) |
| continue; |
| for (char ver : section.getFileName().toString().toCharArray()) { |
| String verString = Character.toString(ver); |
| Target t = Target.lookup("" + Integer.parseInt(verString, 16)); |
| |
| if (t != null) { |
| SUPPORTED_JAVA_PLATFORM_VERSIONS.add(targetNumericVersion(t)); |
| } |
| } |
| } |
| } catch (IOException | ProviderNotFoundException ex) { |
| } |
| } |
| } |
| |
| 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 sourceVersion; |
| private final String ctSymVersion; |
| |
| PlatformDescriptionImpl(String sourceVersion) { |
| this.sourceVersion = sourceVersion; |
| this.ctSymVersion = |
| StringUtils.toUpperCase(Integer.toHexString(Integer.parseInt(sourceVersion))); |
| } |
| |
| @Override |
| public JavaFileManager getFileManager() { |
| Context context = new Context(); |
| PrintWriter pw = new PrintWriter(System.err, true); |
| context.put(Log.errKey, pw); |
| CacheFSInfo.preRegister(context); |
| JavacFileManager fm = new JavacFileManager(context, true, null) { |
| @Override |
| public boolean hasLocation(Location location) { |
| return super.hasExplicitLocation(location); |
| } |
| |
| @Override |
| public JavaFileObject getJavaFileForInput(Location location, String className, |
| Kind kind) throws IOException { |
| if (kind == Kind.CLASS) { |
| String fileName = className.replace('.', '/'); |
| JavaFileObject result = |
| (JavaFileObject) getFileForInput(location, |
| "", |
| fileName + ".sig"); |
| |
| if (result == null) { |
| //in jrt://, the classfile may have the .class extension: |
| result = (JavaFileObject) getFileForInput(location, |
| "", |
| fileName + ".class"); |
| } |
| |
| if (result != null) { |
| return new SigJavaFileObject(result); |
| } else { |
| return null; |
| } |
| } |
| |
| return super.getJavaFileForInput(location, className, kind); |
| } |
| |
| @Override |
| public Iterable<JavaFileObject> list(Location location, |
| String packageName, |
| Set<Kind> kinds, |
| boolean recurse) throws IOException { |
| Set<Kind> enhancedKinds = EnumSet.copyOf(kinds); |
| |
| enhancedKinds.add(Kind.OTHER); |
| |
| Iterable<JavaFileObject> listed = super.list(location, packageName, |
| enhancedKinds, recurse); |
| |
| return () -> new Iterator<JavaFileObject>() { |
| private final Iterator<JavaFileObject> original = listed.iterator(); |
| private JavaFileObject next; |
| @Override |
| public boolean hasNext() { |
| if (next == null) { |
| while (original.hasNext()) { |
| JavaFileObject fo = original.next(); |
| |
| if (fo.getKind() == Kind.OTHER && |
| fo.getName().endsWith(".sig")) { |
| next = new SigJavaFileObject(fo); |
| break; |
| } |
| |
| if (kinds.contains(fo.getKind())) { |
| next = fo; |
| break; |
| } |
| } |
| } |
| return next != null; |
| } |
| |
| @Override |
| public JavaFileObject next() { |
| if (!hasNext()) |
| throw new NoSuchElementException(); |
| JavaFileObject result = next; |
| next = null; |
| return result; |
| } |
| |
| }; |
| } |
| |
| @Override |
| public String inferBinaryName(Location location, JavaFileObject file) { |
| if (file instanceof SigJavaFileObject) { |
| file = ((SigJavaFileObject) file).getDelegate(); |
| } |
| return super.inferBinaryName(location, file); |
| } |
| |
| }; |
| |
| Path file = findCtSym(); |
| // file == ${jdk.home}/lib/ct.sym |
| if (Files.exists(file)) { |
| try { |
| FileSystem fs = ctSym2FileSystem.get(file); |
| if (fs == null) { |
| ctSym2FileSystem.put(file, fs = FileSystems.newFileSystem(file, null)); |
| } |
| |
| List<Path> paths = new ArrayList<>(); |
| Path modules = fs.getPath(ctSymVersion + "-modules"); |
| Path root = fs.getRootDirectories().iterator().next(); |
| boolean pathsSet = false; |
| Charset utf8 = Charset.forName("UTF-8"); |
| |
| try (DirectoryStream<Path> dir = Files.newDirectoryStream(root)) { |
| for (Path section : dir) { |
| if (section.getFileName().toString().contains(ctSymVersion) && |
| !section.getFileName().toString().contains("-")) { |
| Path systemModules = section.resolve("system-modules"); |
| |
| if (Files.isRegularFile(systemModules)) { |
| fm.handleOption("--system", Arrays.asList("none").iterator()); |
| |
| Path jrtModules = |
| FileSystems.getFileSystem(URI.create("jrt:/")) |
| .getPath("modules"); |
| try (Stream<String> lines = |
| Files.lines(systemModules, utf8)) { |
| lines.map(line -> jrtModules.resolve(line)) |
| .filter(mod -> Files.exists(mod)) |
| .forEach(mod -> setModule(fm, mod)); |
| } |
| pathsSet = true; |
| } else { |
| paths.add(section); |
| } |
| } |
| } |
| } |
| |
| if (Files.isDirectory(modules)) { |
| try (DirectoryStream<Path> dir = Files.newDirectoryStream(modules)) { |
| fm.handleOption("--system", Arrays.asList("none").iterator()); |
| |
| for (Path module : dir) { |
| fm.setLocationForModule(StandardLocation.SYSTEM_MODULES, |
| module.getFileName().toString(), |
| Stream.concat(paths.stream(), |
| Stream.of(module)) |
| .collect(Collectors.toList())); |
| } |
| } |
| } else if (!pathsSet) { |
| fm.setLocationFromPaths(StandardLocation.PLATFORM_CLASS_PATH, paths); |
| } |
| |
| return fm; |
| } catch (IOException ex) { |
| throw new IllegalStateException(ex); |
| } |
| } else { |
| throw new IllegalStateException("Cannot find ct.sym!"); |
| } |
| } |
| |
| private static void setModule(StandardJavaFileManager fm, Path mod) { |
| try { |
| fm.setLocationForModule(StandardLocation.SYSTEM_MODULES, |
| mod.getFileName().toString(), |
| Collections.singleton(mod)); |
| } catch (IOException ex) { |
| throw new IllegalStateException(ex); |
| } |
| } |
| |
| private static class SigJavaFileObject extends ForwardingJavaFileObject<JavaFileObject> { |
| |
| public SigJavaFileObject(JavaFileObject fileObject) { |
| super(fileObject); |
| } |
| |
| @Override |
| public Kind getKind() { |
| return Kind.CLASS; |
| } |
| |
| @Override |
| public boolean isNameCompatible(String simpleName, Kind kind) { |
| return super.isNameCompatible(simpleName + ".sig", Kind.OTHER); |
| } |
| |
| public JavaFileObject getDelegate() { |
| return fileObject; |
| } |
| } |
| |
| @Override |
| public String getSourceVersion() { |
| return sourceVersion; |
| } |
| |
| @Override |
| public String getTargetVersion() { |
| return sourceVersion; |
| } |
| |
| @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; |
| } |
| |
| } |