| /******************************************************************************* |
| * Copyright (c) 2006, 2017 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.osgi.internal.hooks; |
| |
| import java.io.File; |
| import java.util.ArrayList; |
| import org.eclipse.osgi.framework.util.KeyedElement; |
| import org.eclipse.osgi.internal.framework.EquinoxConfiguration; |
| import org.eclipse.osgi.internal.hookregistry.ClassLoaderHook; |
| import org.eclipse.osgi.internal.loader.classpath.*; |
| import org.eclipse.osgi.storage.BundleInfo.Generation; |
| import org.eclipse.osgi.storage.bundlefile.BundleFile; |
| |
| public class DevClassLoadingHook extends ClassLoaderHook implements KeyedElement { |
| public static final String KEY = DevClassLoadingHook.class.getName(); |
| public static final int HASHCODE = KEY.hashCode(); |
| private static final String FRAGMENT = "@fragment@"; //$NON-NLS-1$ |
| |
| private final EquinoxConfiguration configuration; |
| |
| public DevClassLoadingHook(EquinoxConfiguration configuration) { |
| this.configuration = configuration; |
| } |
| |
| @Override |
| public boolean addClassPathEntry(ArrayList<ClasspathEntry> cpEntries, String cp, ClasspathManager hostmanager, Generation sourceGeneration) { |
| // first check that we are in devmode for this sourcedata |
| String[] devClassPaths = !configuration.inDevelopmentMode() ? null : configuration.getDevClassPath(sourceGeneration.getRevision().getSymbolicName()); |
| if (devClassPaths == null || devClassPaths.length == 0) |
| return false; // not in dev mode return |
| // check that dev classpath entries have not already been added; we mark this in the first entry below |
| if (cpEntries.size() > 0 && cpEntries.get(0).getUserObject(KEY) != null) |
| return false; // this source has already had its dev classpath entries added. |
| boolean result = false; |
| for (String devClassPath : devClassPaths) { |
| if (hostmanager.addClassPathEntry(cpEntries, devClassPath, hostmanager, sourceGeneration)) { |
| result = true; |
| } else { |
| String devCP = devClassPath; |
| boolean fromFragment = devCP.endsWith(FRAGMENT); |
| if (!fromFragment && devCP.indexOf("..") >= 0) { //$NON-NLS-1$ |
| // if in dev mode, try using cp as a relative path from the base bundle file |
| File base = sourceGeneration.getBundleFile().getBaseFile(); |
| if (base.isDirectory()) { |
| // this is only supported for directory bundles |
| ClasspathEntry entry = hostmanager.getExternalClassPath(new File(base, devCP).getAbsolutePath(), sourceGeneration); |
| if (entry != null) { |
| cpEntries.add(entry); |
| result = true; |
| } |
| } |
| } else { |
| // if in dev mode, try using the cp as an absolute path |
| // we assume absolute entries come from fragments. Find the source |
| if (fromFragment) |
| devCP = devCP.substring(0, devCP.length() - FRAGMENT.length()); |
| Generation fragSource = findFragmentSource(sourceGeneration, devCP, hostmanager, fromFragment); |
| if (fragSource != null) { |
| ClasspathEntry entry = hostmanager.getExternalClassPath(devCP, fragSource); |
| if (entry != null) { |
| cpEntries.add(entry); |
| result = true; |
| } |
| } |
| } |
| } |
| } |
| // mark the first entry of the list. |
| // This way we can quickly tell that dev classpath entries have been added to the list |
| if (result && cpEntries.size() > 0) |
| cpEntries.get(0).addUserObject(this); |
| return result; |
| } |
| |
| private Generation findFragmentSource(Generation hostGeneration, String cp, ClasspathManager manager, boolean fromFragment) { |
| if (hostGeneration != manager.getGeneration()) |
| return hostGeneration; |
| |
| File file = new File(cp); |
| if (!file.isAbsolute()) |
| return hostGeneration; |
| FragmentClasspath[] fragCPs = manager.getFragmentClasspaths(); |
| for (FragmentClasspath fragCP : fragCPs) { |
| BundleFile fragBase = fragCP.getGeneration().getBundleFile(); |
| File fragFile = fragBase.getBaseFile(); |
| if (fragFile != null && file.getPath().startsWith(fragFile.getPath())) { |
| return fragCP.getGeneration(); |
| } |
| } |
| return fromFragment ? null : hostGeneration; |
| } |
| |
| @Override |
| public boolean compare(KeyedElement other) { |
| return other.getKey() == KEY; |
| } |
| |
| @Override |
| public Object getKey() { |
| return KEY; |
| } |
| |
| @Override |
| public int getKeyHashCode() { |
| return HASHCODE; |
| } |
| |
| @Override |
| public boolean isProcessClassRecursionSupported() { |
| return true; |
| } |
| |
| } |