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 package org.apache.commons.io.output;
18
19 import java.io.IOException;
20 import java.io.FilterWriter;
21 import java.io.Writer;
22
23 /**
24 * A Proxy stream which acts as expected, that is it passes the method
25 * calls on to the proxied stream and doesn't change which methods are
26 * being called. It is an alternative base class to FilterWriter
27 * to increase reusability, because FilterWriter changes the
28 * methods being called, such as write(char[]) to write(char[], int, int)
29 * and write(String) to write(String, int, int).
30 *
31 * @author Stephen Colebourne
32 * @version $Id: ProxyWriter.java 471628 2006-11-06 04:06:45Z bayard $
33 */
34 public class ProxyWriter extends FilterWriter {
35
36 /**
37 * Constructs a new ProxyWriter.
38 *
39 * @param proxy the Writer to delegate to
40 */
41 public ProxyWriter(Writer proxy) {
42 super(proxy);
43 // the proxy is stored in a protected superclass variable named 'out'
44 }
45
46 /** @see java.io.Writer#write(int) */
47 public void write(int idx) throws IOException {
48 out.write(idx);
49 }
50
51 /** @see java.io.Writer#write(char[]) */
52 public void write(char[] chr) throws IOException {
53 out.write(chr);
54 }
55
56 /** @see java.io.Writer#write(char[], int, int) */
57 public void write(char[] chr, int st, int end) throws IOException {
58 out.write(chr, st, end);
59 }
60
61 /** @see java.io.Writer#write(String) */
62 public void write(String str) throws IOException {
63 out.write(str);
64 }
65
66 /** @see java.io.Writer#write(String, int, int) */
67 public void write(String str, int st, int end) throws IOException {
68 out.write(str, st, end);
69 }
70
71 /** @see java.io.Writer#flush() */
72 public void flush() throws IOException {
73 out.flush();
74 }
75
76 /** @see java.io.Writer#close() */
77 public void close() throws IOException {
78 out.close();
79 }
80
81 }