1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20 package org.apache.geronimo.javamail.util;
21
22 import java.io.FilterOutputStream;
23 import java.io.IOException;
24 import java.io.OutputStream;
25
26 import org.apache.geronimo.mail.util.QuotedPrintableEncoderStream;
27
28 /**
29 * @version $Rev: 668615 $ $Date: 2008-06-17 07:06:18 -0400 (Tue, 17 Jun 2008) $
30 */
31 public class TraceOutputStream extends FilterOutputStream {
32 // the current debug setting
33 protected boolean debug = false;
34
35 // the target trace output stream.
36 protected OutputStream traceStream;
37
38 /**
39 * Construct a debug trace stream.
40 *
41 * @param out
42 * The target out put stream.
43 * @param traceStream
44 * The side trace stream to which trace data gets written.
45 * @param encode
46 * Indicates whether we wish the Trace data to be Q-P encoded.
47 */
48 public TraceOutputStream(OutputStream out, OutputStream traceStream, boolean debug, boolean encode) {
49 super(out);
50 this.debug = debug;
51 if (encode) {
52 this.traceStream = new QuotedPrintableEncoderStream(traceStream);
53 } else {
54 this.traceStream = traceStream;
55 }
56 }
57
58 /**
59 * Set the current setting of the debug trace stream debug flag.
60 *
61 * @param d
62 * The new debug flag settings.
63 */
64 public void setDebug(boolean d) {
65 debug = d;
66 }
67
68
69 /**
70 * Write a single byte to the output stream.
71 *
72 * @param b The byte to be written.
73 *
74 * @exception IOException
75 * thrown for any I/O errors.
76 */
77 public void write(int b) throws IOException {
78 if (debug) {
79 traceStream.write(b);
80 }
81 super.write(b);
82 }
83 }