| /* |
| * 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.felix.das.util; |
| |
| |
| import org.osgi.framework.Constants; |
| import org.osgi.framework.Filter; |
| import org.osgi.framework.FrameworkUtil; |
| import org.osgi.framework.InvalidSyntaxException; |
| import org.osgi.framework.ServiceReference; |
| import org.osgi.service.device.Device; |
| |
| |
| /** |
| * TODO: add javadoc |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class Util |
| { |
| |
| private Util() |
| { |
| } |
| |
| |
| public static String showDriver( ServiceReference ref ) |
| { |
| Object objectClass = ref.getProperty( Constants.OBJECTCLASS ); |
| Object driverId = ref.getProperty( org.osgi.service.device.Constants.DRIVER_ID ); |
| StringBuffer buffer = new StringBuffer(); |
| |
| buffer.append( "Driver: " ); |
| buffer.append( Constants.OBJECTCLASS ).append( "=" ); |
| |
| if ( String[].class.isInstance( objectClass ) ) |
| { |
| buffer.append( enumerateStringArray( String[].class.cast( objectClass ) ) ); |
| } |
| else |
| { |
| buffer.append( objectClass ); |
| } |
| buffer.append( " " ); |
| |
| buffer.append( org.osgi.service.device.Constants.DRIVER_ID ).append( "=" ); |
| buffer.append( driverId ); |
| return buffer.toString(); |
| } |
| |
| public static boolean isDevice( ServiceReference ref ) |
| { |
| try |
| { |
| Filter device = createFilter( "(|(%s=%s)(%s=%s))", new Object[] |
| { |
| Constants.OBJECTCLASS, Device.class.getName(), |
| org.osgi.service.device.Constants.DEVICE_CATEGORY, "*" |
| } |
| ); |
| return device.match( ref ); |
| } |
| catch ( Exception e ) |
| { |
| e.printStackTrace(); |
| } |
| return false; |
| } |
| |
| public static boolean isDeviceInstance( ServiceReference ref ) |
| { |
| try |
| { |
| Filter device = createFilter( "(%s=%s)", new Object[] |
| { Constants.OBJECTCLASS, Device.class.getName() } ); |
| return device.match( ref ); |
| } |
| catch ( Exception e ) |
| { |
| e.printStackTrace(); |
| } |
| return false; |
| } |
| |
| |
| public static String createFilterString( String input, Object[] data ) |
| { |
| return String.format( input, data ); |
| } |
| |
| |
| public static Filter createFilter( String input, Object[] data ) throws InvalidSyntaxException |
| { |
| return FrameworkUtil.createFilter( String.format( input, data ) ); |
| } |
| |
| |
| public static String showDevice( ServiceReference ref ) |
| { |
| Object objectClass = ref.getProperty( Constants.OBJECTCLASS ); |
| Object category = ref.getProperty( org.osgi.service.device.Constants.DEVICE_CATEGORY ); |
| StringBuffer buffer = new StringBuffer(); |
| |
| buffer.append( "Device: " ); |
| buffer.append( Constants.OBJECTCLASS ).append( "=" ); |
| |
| appendObject( buffer, objectClass ); |
| buffer.append( " " ); |
| |
| buffer.append( org.osgi.service.device.Constants.DEVICE_CATEGORY ).append( "=" ); |
| appendObject( buffer, category ); |
| |
| buffer.append( "\n{ " ); |
| String[] keys = ref.getPropertyKeys(); |
| |
| for ( String key : keys ) |
| { |
| if ( key.equals( Constants.OBJECTCLASS ) ) |
| { |
| continue; |
| } |
| if ( key.equals( org.osgi.service.device.Constants.DEVICE_CATEGORY ) ) |
| { |
| continue; |
| } |
| buffer.append( key ).append( "=" ); |
| appendObject( buffer, ref.getProperty( key ) ); |
| buffer.append( " " ); |
| } |
| buffer.append( "}\n" ); |
| |
| return buffer.toString(); |
| } |
| |
| |
| private static void appendObject( StringBuffer buffer, Object obj ) |
| { |
| if ( String[].class.isInstance( obj ) ) |
| { |
| buffer.append( enumerateStringArray( String[].class.cast( obj ) ) ); |
| } |
| else |
| { |
| buffer.append( obj ); |
| } |
| } |
| |
| |
| private static String enumerateStringArray( String[] strings ) |
| { |
| StringBuffer buffer = new StringBuffer(); |
| |
| buffer.append( "[" ); |
| for ( String str : strings ) |
| { |
| buffer.append( str ); |
| buffer.append( " " ); |
| } |
| buffer.deleteCharAt( buffer.length() - 1 ); |
| buffer.append( "]" ); |
| return buffer.toString(); |
| } |
| } |