| /******************************************************************************* |
| * Copyright (c) 2004, 2005 IBM Corporation and others. |
| * 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 |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.osgi.framework.internal.core; |
| |
| import java.net.URL; |
| import java.util.Enumeration; |
| import org.eclipse.osgi.util.ManifestElement; |
| |
| public class FilteredSourcePackage extends SingleSourcePackage { |
| private static final char ALL = '*'; |
| String[] includes; |
| String[] excludes; |
| String[] friends; |
| |
| public FilteredSourcePackage(String name, int expid, BundleLoaderProxy supplier, String includes, String excludes, String[] friends) { |
| super(name, expid, supplier); |
| if (includes != null) |
| this.includes = ManifestElement.getArrayFromList(includes); |
| if (excludes != null) |
| this.excludes = ManifestElement.getArrayFromList(excludes); |
| this.friends = friends; |
| } |
| |
| public boolean isFriend(String symbolicName) { |
| if (friends == null) |
| return true; |
| for (int i = 0; i < friends.length; i++) |
| if (friends[i].equals(symbolicName)) |
| return true; |
| return false; |
| } |
| |
| public URL getResource(String name) { |
| if (isFiltered(name, getId())) |
| return null; |
| return super.getResource(name); |
| } |
| public Enumeration getResources(String name) { |
| if (isFiltered(name, getId())) |
| return null; |
| return super.getResources(name); |
| } |
| public Class loadClass(String name) { |
| 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 (int i = 0; i < list.length; i++) { |
| int len = list[i].length(); |
| if (len == 0) |
| continue; |
| if (list[i].charAt(0) == ALL && len == 1) |
| return true; // handles "*" wild card |
| if (list[i].charAt(len-1) == ALL) |
| if (name.startsWith(list[i].substring(0, len-1))) |
| return true; |
| if (name.equals(list[i])) |
| return true; |
| |
| } |
| return false; |
| } |
| } |