RedirectingStreamHandler


1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one or more
3    *  contributor license agreements.  See the NOTICE file distributed with
4    *  this work for additional information regarding copyright ownership.
5    *  The ASF licenses this file to You under the Apache License, Version 2.0
6    *  (the "License"); you may not use this file except in compliance with
7    *  the License.  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   */
18  package org.apache.tools.ant.taskdefs.cvslib;
19  
20  import java.io.ByteArrayOutputStream  ;
21  import java.io.IOException  ;
22  import org.apache.tools.ant.BuildException;
23  import org.apache.tools.ant.taskdefs.PumpStreamHandler;
24  
25  /**
26   * A dummy stream handler that just passes stuff to the parser.
27   *
28   */
29  class RedirectingStreamHandler
30       extends PumpStreamHandler {
31      RedirectingStreamHandler(final ChangeLogParser parser) {
32          super(new RedirectingOutputStream(parser),
33              new ByteArrayOutputStream  ());
34      }
35  
36  
37      String   getErrors() {
38          try {
39              final ByteArrayOutputStream   error
40                  = (ByteArrayOutputStream  ) getErr();
41  
42              return error.toString("ASCII");
43          } catch (final Exception   e) {
44              return null;
45          }
46      }
47  
48  
49      public void stop() {
50          super.stop();
51          try {
52              getErr().close();
53              getOut().close();
54          } catch (final IOException   e) {
55              // plain impossible
56              throw new BuildException(e);
57          }
58      }
59  }
60  
61
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