| /******************************************************************************* |
| * Copyright (c) 2004, 2014 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.loader.sources; |
| |
| import java.net.URL; |
| import java.util.*; |
| import org.eclipse.osgi.internal.loader.BundleLoader; |
| import org.eclipse.osgi.util.ManifestElement; |
| |
| public class FilteredSourcePackage extends SingleSourcePackage { |
| private static final char ALL = '*'; |
| private final String[] includes; |
| private final String[] excludes; |
| |
| public FilteredSourcePackage(String name, BundleLoader supplier, String includes, String excludes) { |
| super(name, supplier); |
| this.includes = includes != null ? ManifestElement.getArrayFromList(includes) : null; |
| this.excludes = excludes != null ? ManifestElement.getArrayFromList(excludes) : null; |
| } |
| |
| @Override |
| public URL getResource(String name) { |
| if (isFiltered(name, getId())) |
| return null; |
| return super.getResource(name); |
| } |
| |
| @Override |
| public Enumeration<URL> getResources(String name) { |
| if (isFiltered(name, getId())) |
| return null; |
| return super.getResources(name); |
| } |
| |
| @Override |
| public Class<?> loadClass(String name) throws ClassNotFoundException { |
| if (isFiltered(name, getId())) |
| return null; |
| return super.loadClass(name); |
| } |
| |
| private boolean isFiltered(String name, String pkgName) { |
| String lastName = getName(name, pkgName); |
| return !isIncluded(lastName) || isExcluded(lastName); |
| } |
| |
| private String getName(String name, String pkgName) { |
| if (!BundleLoader.DEFAULT_PACKAGE.equals(pkgName) && pkgName.length() + 1 <= name.length()) |
| return name.substring(pkgName.length() + 1); |
| return name; |
| } |
| |
| private boolean isIncluded(String name) { |
| if (includes == null) |
| return true; |
| return isInList(name, includes); |
| } |
| |
| private boolean isExcluded(String name) { |
| if (excludes == null) |
| return false; |
| return isInList(name, excludes); |
| } |
| |
| private boolean isInList(String name, String[] list) { |
| for (String s : list) { |
| int len = s.length(); |
| if (len == 0) |
| continue; |
| if (s.charAt(0) == ALL && len == 1) { |
| return true; // handles "*" wild card |
| } |
| if (s.charAt(len - 1) == ALL) { |
| if (name.startsWith(s.substring(0, len - 1))) { |
| return true; |
| } |
| } |
| if (name.equals(s)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public Collection<String> listResources(String path, String filePattern) { |
| Collection<String> result = super.listResources(path, filePattern); |
| for (Iterator<String> resources = result.iterator(); resources.hasNext();) { |
| String resource = resources.next(); |
| int lastSlash = resource.lastIndexOf('/'); |
| String fileName = lastSlash >= 0 ? resource.substring(lastSlash + 1) : resource; |
| if (!isIncluded(fileName) || isExcluded(fileName)) |
| resources.remove(); |
| } |
| return result; |
| } |
| |
| } |