| /******************************************************************************* |
| * Copyright (c) 2000, 2015 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.core.internal.runtime; |
| |
| import java.io.IOException; |
| import java.net.URL; |
| import org.eclipse.core.internal.boot.PlatformURLConnection; |
| import org.eclipse.core.internal.boot.PlatformURLHandler; |
| import org.eclipse.osgi.util.NLS; |
| import org.osgi.framework.Bundle; |
| |
| /** |
| * Platform URL support |
| * platform:/plugin/pluginId/ maps to pluginDescriptor.getInstallURLInternal() |
| */ |
| public class PlatformURLPluginConnection extends PlatformURLConnection { |
| |
| private static boolean isRegistered = false; |
| public static final String PLUGIN = "plugin"; //$NON-NLS-1$ |
| |
| /* |
| * Constructor for the class. |
| */ |
| public PlatformURLPluginConnection(URL url) { |
| super(url); |
| } |
| |
| @Override |
| protected boolean allowCaching() { |
| return true; |
| } |
| |
| /* |
| * spec - /plugin/com.example/META-INF/MANIFEST.MF |
| * originalURL - used only for exception messages |
| * result[0] - Bundle (e.g. com.example) |
| * result[1] - String (path) (e.g. META-INF/MANIFEST.MF) |
| */ |
| public static Object[] parse(String spec, URL originalURL) throws IOException { |
| Object[] result = new Object[2]; |
| if (spec.startsWith("/")) //$NON-NLS-1$ |
| spec = spec.substring(1); |
| if (!spec.startsWith(PLUGIN)) |
| throw new IOException(NLS.bind(CommonMessages.url_badVariant, originalURL)); |
| int ix = spec.indexOf("/", PLUGIN.length() + 1); //$NON-NLS-1$ |
| String ref = ix == -1 ? spec.substring(PLUGIN.length() + 1) : spec.substring(PLUGIN.length() + 1, ix); |
| String id = getId(ref); |
| Activator activator = Activator.getDefault(); |
| if (activator == null) |
| throw new IOException(CommonMessages.activator_not_available); |
| Bundle bundle = activator.getBundle(id); |
| if (bundle == null) |
| throw new IOException(NLS.bind(CommonMessages.url_resolvePlugin, id)); |
| result[0] = bundle; |
| result[1] = (ix == -1 || (ix + 1) >= spec.length()) ? "/" : spec.substring(ix + 1); //$NON-NLS-1$ |
| return result; |
| } |
| |
| @Override |
| protected URL resolve() throws IOException { |
| String spec = url.getFile().trim(); |
| Object[] obj = parse(spec, url); |
| Bundle b = (Bundle) obj[0]; |
| String path = (String) obj[1]; |
| URL result = b.getEntry(path); |
| if (result != null || "/".equals(path)) //$NON-NLS-1$ |
| return result; |
| // try resolving the path through the classloader |
| result = b.getResource(path); |
| if (result != null) |
| return result; |
| // if the result is null then force the creation of a URL that will throw FileNotFoundExceptions |
| return new URL(b.getEntry("/"), path); //$NON-NLS-1$ |
| } |
| |
| public static void startup() { |
| // register connection type for platform:/plugin handling |
| if (isRegistered) |
| return; |
| PlatformURLHandler.register(PLUGIN, PlatformURLPluginConnection.class); |
| isRegistered = true; |
| } |
| } |