001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 package org.apache.servicemix.specs.activation; 020 021 import java.io.BufferedReader; 022 import java.io.InputStream; 023 import java.io.InputStreamReader; 024 import java.net.URL; 025 import java.util.Map; 026 import java.util.concurrent.ConcurrentHashMap; 027 028 import javax.activation.CommandMap; 029 030 import org.osgi.framework.Bundle; 031 import org.osgi.framework.BundleContext; 032 033 /** 034 * A bundle activator for activation framework 035 */ 036 public class Activator extends org.apache.servicemix.specs.locator.Activator { 037 038 private Map<Long, MailCap> mailcaps = new ConcurrentHashMap<Long, MailCap>(); 039 040 @Override 041 public void start(BundleContext bundleContext) throws Exception { 042 super.start(bundleContext); 043 } 044 045 @Override 046 public void stop(BundleContext bundleContext) throws Exception { 047 super.stop(bundleContext); 048 CommandMap.setDefaultCommandMap(null); 049 } 050 051 @Override 052 protected void register(Bundle bundle) { 053 debugPrintln("checking bundle " + bundle.getBundleId()); 054 URL url = bundle.getResource("/META-INF/mailcap"); 055 if (url != null) { 056 debugPrintln("found mailcap at " + url); 057 mailcaps.put(bundle.getBundleId(), new MailCap(bundle, url)); 058 rebuildCommandMap(); 059 } 060 } 061 062 @Override 063 protected void unregister(long bundleId) { 064 MailCap mailcap = mailcaps.remove(bundleId); 065 if (mailcap != null ){ 066 debugPrintln("removing mailcap at " + mailcap.url); 067 rebuildCommandMap(); 068 } 069 } 070 071 private void rebuildCommandMap() { 072 OsgiMailcapCommandMap commandMap = new OsgiMailcapCommandMap(); 073 for (MailCap mailcap : mailcaps.values()) { 074 try { 075 InputStream is = mailcap.url.openStream(); 076 try { 077 BufferedReader br = new BufferedReader(new InputStreamReader(is)); 078 String line; 079 while ((line = br.readLine()) != null) { 080 commandMap.addMailcap(line, mailcap.bundle); 081 } 082 } finally { 083 is.close(); 084 } 085 } catch (Exception e) { 086 // Ignore 087 } 088 } 089 CommandMap.setDefaultCommandMap(commandMap); 090 } 091 092 private static class MailCap { 093 Bundle bundle; 094 URL url; 095 096 private MailCap(Bundle bundle, URL url) { 097 this.bundle = bundle; 098 this.url = url; 099 } 100 } 101 102 }