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1   /**
2    *
3    * Copyright 2004 The Apache Software Foundation
4    *
5    *  Licensed under the Apache License, Version 2.0 (the "License");
6    *  you may not use this file except in compliance with the License.
7    *  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   */
17  package org.apache.geronimo.activation.handlers;
18  
19  import java.awt.datatransfer.DataFlavor;
20  import java.awt.datatransfer.UnsupportedFlavorException;
21  import java.io.IOException;
22  import java.io.InputStreamReader;
23  import java.io.OutputStream;
24  import java.io.OutputStreamWriter;
25  import java.io.Reader;
26  import javax.activation.DataContentHandler;
27  import javax.activation.DataSource;
28  
29  /**
30   * @version $Rev: 356022 $ $Date: 2005-12-11 12:58:34 -0800 (Sun, 11 Dec 2005) $
31   */
32  public class AbstractTextHandler implements DataContentHandler {
33      private final DataFlavor flavour;
34  
35      public AbstractTextHandler(DataFlavor flavour) {
36          this.flavour = flavour;
37      }
38  
39      public DataFlavor[] getTransferDataFlavors() {
40          return new DataFlavor[] {flavour};
41      }
42  
43      public Object getTransferData(DataFlavor dataFlavor, DataSource dataSource) throws UnsupportedFlavorException, IOException {
44          return flavour.equals(dataFlavor) ? getContent(dataSource) : null;
45      }
46  
47      public Object getContent(DataSource ds) throws IOException {
48          // todo handle encoding
49          Reader reader = new InputStreamReader(ds.getInputStream());
50          StringBuffer result = new StringBuffer(1024);
51          char[] buffer = new char[32768];
52          int count;
53          while ((count = reader.read(buffer)) != -1) {
54              result.append(buffer, 0, count);
55          }
56          return result.toString();
57      }
58  
59      public void writeTo(Object o, String mimeType, OutputStream os) throws IOException {
60          String s;
61          if (o instanceof String) {
62              s = (String) o;
63          } else if (o != null) {
64              s = o.toString();
65          } else {
66              return;
67          }
68          // todo handle encoding
69          OutputStreamWriter writer = new OutputStreamWriter(os);
70          writer.write(s);
71          writer.flush();
72      }
73  }