| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.sling.javax.activation.internal; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| |
| import javax.activation.CommandMap; |
| import javax.activation.MailcapCommandMap; |
| |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleActivator; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.BundleEvent; |
| import org.osgi.util.tracker.BundleTracker; |
| import org.osgi.util.tracker.BundleTrackerCustomizer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * The <tt>Activator</tt> locates <tt>activation</tt>-related services defined in <tt>mailcap</tt> files and registers |
| * them so they can be used by the Java Activation Framework |
| * |
| * <p> |
| * The mailcap entries are expected to be found in a <tt>/META-INF/mailcap</tt> file inside the bundle. |
| * </p> |
| * |
| * <p> |
| * This implementation does not support the full lookup algorithm specified by the {@link MailcapCommandMap}. |
| * </p> |
| * |
| */ |
| public class Activator implements BundleActivator { |
| |
| private static final String MAILCAP_FILE_NAME = "/META-INF/mailcap"; |
| private static final Logger log = LoggerFactory.getLogger(Activator.class); |
| |
| private BundleTracker bundleTracker; |
| private OsgiMailcapCommandMap commandMap; |
| |
| public void start(BundleContext context) throws Exception { |
| |
| commandMap = new OsgiMailcapCommandMap(); |
| |
| for (Bundle bundle : context.getBundles()) |
| registerBundleMailcapEntries(bundle); |
| |
| CommandMap.setDefaultCommandMap(commandMap); |
| |
| bundleTracker = new BundleTracker(context, Bundle.ACTIVE | Bundle.UNINSTALLED | Bundle.STOP_TRANSIENT, |
| new BundleTrackerCustomizer() { |
| |
| public void removedBundle(Bundle bundle, BundleEvent event, Object object) { |
| unregisterBundleMailcapEntries(bundle); |
| } |
| |
| public void modifiedBundle(Bundle bundle, BundleEvent event, Object object) { |
| unregisterBundleMailcapEntries(bundle); |
| registerBundleMailcapEntries(bundle); |
| } |
| |
| public Object addingBundle(Bundle bundle, BundleEvent event) { |
| registerBundleMailcapEntries(bundle); |
| return bundle; |
| } |
| }); |
| |
| bundleTracker.open(); |
| } |
| |
| private void registerBundleMailcapEntries(Bundle bundle) { |
| |
| if (bundle.getState() != Bundle.ACTIVE) |
| return; |
| |
| URL mailcapEntry = bundle.getEntry(MAILCAP_FILE_NAME); |
| if (mailcapEntry == null) |
| return; |
| |
| InputStream input = null; |
| |
| try { |
| input = mailcapEntry.openStream(); |
| |
| commandMap.addMailcapEntries(input, bundle); |
| |
| } catch (IOException e) { |
| log.warn("Failed loading " + MAILCAP_FILE_NAME + " from bundle " + bundle, e); |
| } finally { |
| try { |
| input.close(); |
| } catch (IOException e) { |
| // don't care |
| } |
| } |
| } |
| |
| private void unregisterBundleMailcapEntries(Bundle bundle) { |
| |
| commandMap.removeMailcapEntriesForBundle(bundle); |
| } |
| |
| public void stop(BundleContext context) throws Exception { |
| |
| if (bundleTracker != null) { |
| bundleTracker.close(); |
| bundleTracker = null; |
| } |
| |
| CommandMap.setDefaultCommandMap(null); |
| } |
| |
| } |