| /******************************************************************************* |
| * Copyright (c) 2000, 2006 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:/fragment/fragmentId/ maps to fragmentDescriptor.getInstallURLInternal() |
| */ |
| public class PlatformURLFragmentConnection extends PlatformURLConnection { |
| |
| private Bundle target = null; |
| private static boolean isRegistered = false; |
| public static final String FRAGMENT = "fragment"; //$NON-NLS-1$ |
| |
| /* |
| * Constructor for the class. |
| */ |
| public PlatformURLFragmentConnection(URL url) { |
| super(url); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.equinox.internal.url.PlatformURLConnection#allowCaching() |
| */ |
| protected boolean allowCaching() { |
| return true; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.equinox.internal.url.PlatformURLConnection#resolve() |
| */ |
| protected URL resolve() throws IOException { |
| String spec = url.getFile().trim(); |
| if (spec.startsWith("/")) //$NON-NLS-1$ |
| spec = spec.substring(1); |
| if (!spec.startsWith(FRAGMENT)) |
| throw new IOException(NLS.bind(CommonMessages.url_badVariant, url)); |
| int ix = spec.indexOf("/", FRAGMENT.length() + 1); //$NON-NLS-1$ |
| String ref = ix == -1 ? spec.substring(FRAGMENT.length() + 1) : spec.substring(FRAGMENT.length() + 1, ix); |
| String id = getId(ref); |
| Activator activator = Activator.getDefault(); |
| if (activator == null) |
| throw new IOException(CommonMessages.activator_not_available); |
| target = activator.getBundle(id); |
| if (target == null) |
| throw new IOException(NLS.bind(CommonMessages.url_resolveFragment, url)); |
| URL result = target.getEntry("/"); //$NON-NLS-1$ |
| if (ix == -1 || (ix + 1) >= spec.length()) |
| return result; |
| return new URL(result, spec.substring(ix + 1)); |
| } |
| |
| public static void startup() { |
| // register connection type for platform:/fragment handling |
| if (isRegistered) |
| return; |
| PlatformURLHandler.register(FRAGMENT, PlatformURLFragmentConnection.class); |
| isRegistered = true; |
| } |
| } |