001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.geronimo.activation.handlers;
018
019 import java.awt.datatransfer.DataFlavor;
020 import java.awt.datatransfer.UnsupportedFlavorException;
021 import java.io.IOException;
022 import java.io.InputStreamReader;
023 import java.io.OutputStream;
024 import java.io.OutputStreamWriter;
025 import java.io.Reader;
026 import javax.activation.DataContentHandler;
027 import javax.activation.DataSource;
028
029 /**
030 * @version $Rev: 476049 $ $Date: 2006-11-16 23:35:17 -0500 (Thu, 16 Nov 2006) $
031 */
032 public class AbstractTextHandler implements DataContentHandler {
033 private final DataFlavor flavour;
034
035 public AbstractTextHandler(DataFlavor flavour) {
036 this.flavour = flavour;
037 }
038
039 public DataFlavor[] getTransferDataFlavors() {
040 return new DataFlavor[] {flavour};
041 }
042
043 public Object getTransferData(DataFlavor dataFlavor, DataSource dataSource) throws UnsupportedFlavorException, IOException {
044 return flavour.equals(dataFlavor) ? getContent(dataSource) : null;
045 }
046
047 public Object getContent(DataSource ds) throws IOException {
048 // todo handle encoding
049 Reader reader = new InputStreamReader(ds.getInputStream());
050 StringBuffer result = new StringBuffer(1024);
051 char[] buffer = new char[32768];
052 int count;
053 while ((count = reader.read(buffer)) != -1) {
054 result.append(buffer, 0, count);
055 }
056 return result.toString();
057 }
058
059 public void writeTo(Object o, String mimeType, OutputStream os) throws IOException {
060 String s;
061 if (o instanceof String) {
062 s = (String) o;
063 } else if (o != null) {
064 s = o.toString();
065 } else {
066 return;
067 }
068 // todo handle encoding
069 OutputStreamWriter writer = new OutputStreamWriter(os);
070 writer.write(s);
071 writer.flush();
072 }
073 }