| /* |
| * Copyright (c) 2010-2020 BSI Business Systems Integration AG. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * BSI Business Systems Integration AG - initial API and implementation |
| */ |
| package org.eclipse.scout.sdk.core.model.ecj; |
| |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.LinkedHashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Optional; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.eclipse.jdt.internal.compiler.batch.FileSystem; |
| import org.eclipse.jdt.internal.compiler.batch.FileSystem.Classpath; |
| import org.eclipse.scout.sdk.core.log.SdkLog; |
| import org.eclipse.scout.sdk.core.model.spi.ClasspathSpi; |
| |
| /** |
| * <h3>{@link ClasspathBuilder}</h3> |
| * <p> |
| * Helper class to create {@link Classpath} instances for a specified JRE and user {@link ClasspathEntry |
| * ClasspathEntries}. |
| * |
| * @since 7.0.100 |
| */ |
| public class ClasspathBuilder { |
| |
| private static final Map<Path, JreInfo> JRE_INFOS = new ConcurrentHashMap<>(); |
| |
| private final List<Classpath> m_full; |
| private final List<Classpath> m_bootClasspath; |
| private final Collection<Classpath> m_classpath; |
| private final Set<ClasspathEntry> m_entries; |
| private final JreInfo m_jreInfo; |
| |
| /** |
| * @param jreHome |
| * The absolute path to the JRE (not JDK!) root. Based on this path the bootstrap classpath will be |
| * constructed. May be {@code null}. Then the running JRE is used. |
| * @param paths |
| * The runtime classpath entries. |
| */ |
| protected ClasspathBuilder(Path jreHome, Collection<? extends ClasspathEntry> paths) { |
| var javaHome = Optional.ofNullable(jreHome).orElseGet(JreInfo::runningJavaHome).normalize(); |
| m_jreInfo = JRE_INFOS.computeIfAbsent(javaHome, JreInfo::new); |
| |
| var classpath = toClasspath(paths); |
| m_entries = classpath.keySet(); |
| m_classpath = classpath.values(); |
| |
| m_bootClasspath = createBootClasspathFor(m_jreInfo); |
| |
| List<Classpath> fullCp = new ArrayList<>(m_classpath.size() + m_bootClasspath.size()); |
| fullCp.addAll(m_classpath); |
| fullCp.addAll(m_bootClasspath); |
| m_full = fullCp; |
| } |
| |
| /** |
| * @return All {@link Classpath} entries (boot classpath and user classpath combined). |
| */ |
| public List<Classpath> fullClasspath() { |
| return m_full; |
| } |
| |
| /** |
| * @return The boot classpath for the JRE associated with this builder. |
| */ |
| public List<Classpath> bootClasspath() { |
| return m_bootClasspath; |
| } |
| |
| /** |
| * @return The user classpath associated with this builder. |
| */ |
| public Collection<Classpath> userClasspath() { |
| return m_classpath; |
| } |
| |
| /** |
| * @return The user classpath as {@link ClasspathEntry} list. |
| */ |
| public Set<ClasspathEntry> userClasspathEntries() { |
| return m_entries; |
| } |
| |
| /** |
| * @return Detail information about the JRE associated with this builder. |
| */ |
| public JreInfo jreInfo() { |
| return m_jreInfo; |
| } |
| |
| private static List<Classpath> createBootClasspathFor(JreInfo jre) { |
| List<Classpath> result = new ArrayList<>(); |
| var jreHome = jre.jreHome(); |
| var rtSrcZip = jre.rtSrcZip(); |
| if (jre.supportsJrtModules()) { |
| SdkLog.debug("Boot Classpath uses binary JRT modules of Java home: {}.", jreHome); |
| result.add(FileSystem.getJrtClasspath(jreHome.toString(), null, null, null)); |
| } |
| else { |
| SdkLog.debug("Using Boot Classpath based on the jars in the lib folder of Java home: {}.", jreHome); |
| // append RT src.zip first |
| appendSrcClasspathToEnd(result, rtSrcZip, null /* use default encoding */); |
| |
| for (var cpEntry : jre.bootClasspath()) { |
| appendBinClasspathToEnd(result, cpEntry); |
| } |
| } |
| |
| return result; |
| } |
| |
| private Map<ClasspathEntry, Classpath> toClasspath(Collection<? extends ClasspathEntry> paths) { |
| Map<ClasspathEntry, Classpath> result = new LinkedHashMap<>(paths.size()); |
| var version = jreInfo().version(); |
| if (JreInfo.VERSION_1_8.equals(version)) { |
| version = null; // multi release JARs are not supported before Java 9. |
| } |
| |
| for (ClasspathEntry cpe : paths) { |
| if (result.containsKey(cpe)) { |
| continue; // skip duplicates. using the first of all duplicates on the cp |
| } |
| |
| var classpath = toClasspath(cpe.path(), cpe.mode() == ClasspathSpi.MODE_SOURCE, cpe.encoding(), version); |
| if (classpath != null) { |
| result.put(cpe, classpath); |
| } |
| } |
| return result; |
| } |
| |
| private static void appendBinClasspathToEnd(Collection<Classpath> collector, Path f) { |
| appendClasspathToEnd(collector, f, false, null); |
| } |
| |
| private static void appendSrcClasspathToEnd(Collection<Classpath> collector, Path f, String encoding) { |
| appendClasspathToEnd(collector, f, true, encoding); |
| } |
| |
| private static void appendClasspathToEnd(Collection<Classpath> collector, Path f, boolean isSourceOnly, String encoding) { |
| var cp = toClasspath(f, isSourceOnly, encoding, null); |
| if (cp == null) { |
| return; |
| } |
| collector.add(cp); |
| } |
| |
| private static Classpath toClasspath(Path f, boolean isSourceOnly, String encoding, String release) { |
| if (f == null || !Files.isReadable(f)) { |
| return null; |
| } |
| return FileSystem.getClasspath(f.toString(), encoding, isSourceOnly, null, null, null, release); |
| } |
| } |