Source code: org/apache/http/io/HttpDataOutputStream.java
1 /*
2 * $HeadURL: https://svn.apache.org/repos/asf/jakarta/httpcomponents/httpcore/tags/4.0-alpha2/src/java/org/apache/http/io/HttpDataOutputStream.java $
3 * $Revision: 376961 $
4 * $Date: 2006-02-11 11:32:50 +0100 (Sat, 11 Feb 2006) $
5 *
6 * ====================================================================
7 *
8 * Copyright 1999-2006 The Apache Software Foundation
9 *
10 * Licensed under the Apache License, Version 2.0 (the "License");
11 * you may not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 * http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS,
18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
21 * ====================================================================
22 *
23 * This software consists of voluntary contributions made by many
24 * individuals on behalf of the Apache Software Foundation. For more
25 * information on the Apache Software Foundation, please see
26 * <http://www.apache.org/>.
27 *
28 */
29
30 package org.apache.http.io;
31
32 import java.io.IOException;
33 import java.io.OutputStream;
34
35 /**
36 * A stream for writing to a {@link HttpDataTransmitter HttpDataTransmitter}.
37 *
38 * @author <a href="mailto:oleg at ural.ru">Oleg Kalnichevski</a>
39 *
40 * @version $Revision: 376961 $
41 *
42 * @since 4.0
43 */
44 public class HttpDataOutputStream extends OutputStream {
45
46 private final HttpDataTransmitter datatransmitter;
47
48 private boolean closed = false;
49
50 public HttpDataOutputStream(final HttpDataTransmitter datatransmitter) {
51 super();
52 if (datatransmitter == null) {
53 throw new IllegalArgumentException("HTTP data transmitter may not be null");
54 }
55 this.datatransmitter = datatransmitter;
56 }
57
58 public void close() throws IOException {
59 if (!this.closed) {
60 this.closed = true;
61 this.datatransmitter.flush();
62 }
63 }
64
65 private void assertNotClosed() {
66 if (this.closed) {
67 throw new IllegalStateException("Stream closed");
68 }
69 }
70
71 public void flush() throws IOException {
72 assertNotClosed();
73 this.datatransmitter.flush();
74 }
75
76 public void write(final byte[] b, int off, int len) throws IOException {
77 assertNotClosed();
78 this.datatransmitter.write(b, off, len);
79 }
80
81 public void write(int b) throws IOException {
82 assertNotClosed();
83 this.datatransmitter.write(b);
84 }
85 }