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.mail.util;
21
22 import java.io.IOException;
23 import java.io.OutputStream;
24
25 /**
26 * An implementation of an OutputStream that writes the data directly
27 * out to a StringBuffer object. Useful for applications where an
28 * intermediate ByteArrayOutputStream is required to append generated
29 * characters to a StringBuffer;
30 */
31 public class StringBufferOutputStream extends OutputStream {
32
33 // the target buffer
34 protected StringBuffer buffer;
35
36 /**
37 * Create an output stream that writes to the target StringBuffer
38 *
39 * @param out The wrapped output stream.
40 */
41 public StringBufferOutputStream(StringBuffer out) {
42 buffer = out;
43 }
44
45
46 // in order for this to work, we only need override the single character form, as the others
47 // funnel through this one by default.
48 public void write(int ch) throws IOException {
49 // just append the character
50 buffer.append((char)ch);
51 }
52 }
53
54
55