1 //
2 // ========================================================================
3 // Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19 package org.eclipse.jetty.io;
20
21 import java.io.IOException;
22 import java.io.OutputStream;
23 import java.io.Writer;
24 import java.nio.charset.Charset;
25
26
27 /* ------------------------------------------------------------ */
28 /** Wrap a Writer as an OutputStream.
29 * When all you have is a Writer and only an OutputStream will do.
30 * Try not to use this as it indicates that your design is a dogs
31 * breakfast (JSP made me write it).
32 *
33 */
34 public class WriterOutputStream extends OutputStream
35 {
36 protected final Writer _writer;
37 protected final Charset _encoding;
38 private final byte[] _buf=new byte[1];
39
40 /* ------------------------------------------------------------ */
41 public WriterOutputStream(Writer writer, String encoding)
42 {
43 _writer=writer;
44 _encoding=encoding==null?null:Charset.forName(encoding);
45 }
46
47 /* ------------------------------------------------------------ */
48 public WriterOutputStream(Writer writer)
49 {
50 _writer=writer;
51 _encoding=null;
52 }
53
54 /* ------------------------------------------------------------ */
55 @Override
56 public void close()
57 throws IOException
58 {
59 _writer.close();
60 }
61
62 /* ------------------------------------------------------------ */
63 @Override
64 public void flush()
65 throws IOException
66 {
67 _writer.flush();
68 }
69
70 /* ------------------------------------------------------------ */
71 @Override
72 public void write(byte[] b)
73 throws IOException
74 {
75 if (_encoding==null)
76 _writer.write(new String(b));
77 else
78 _writer.write(new String(b,_encoding));
79 }
80
81 /* ------------------------------------------------------------ */
82 @Override
83 public void write(byte[] b, int off, int len)
84 throws IOException
85 {
86 if (_encoding==null)
87 _writer.write(new String(b,off,len));
88 else
89 _writer.write(new String(b,off,len,_encoding));
90 }
91
92 /* ------------------------------------------------------------ */
93 @Override
94 public synchronized void write(int b)
95 throws IOException
96 {
97 _buf[0]=(byte)b;
98 write(_buf);
99 }
100 }
101