1 /*
2 * Copyright 2009 Red Hat, Inc.
3 *
4 * Red Hat licenses this file to you under the Apache License, version 2.0
5 * (the "License"); you may not use this file except in compliance with the
6 * License. You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package org.jboss.netty.handler.codec.frame;
17
18 import org.jboss.netty.buffer.ChannelBuffer;
19 import org.jboss.netty.buffer.ChannelBuffers;
20
21 /**
22 * A set of commonly used delimiters for {@link DelimiterBasedFrameDecoder}.
23 *
24 * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
25 * @author <a href="http://gleamynode.net/">Trustin Lee</a>
26 *
27 * @version $Rev:231 $, $Date:2008-06-12 16:44:50 +0900 (목, 12 6월 2008) $
28 *
29 */
30 public class Delimiters {
31
32 /**
33 * Returns a {@code NUL (0x00)} delimiter, which could be used for
34 * Flash XML socket or any similar protocols.
35 */
36 public static ChannelBuffer[] nulDelimiter() {
37 return new ChannelBuffer[] {
38 ChannelBuffers.wrappedBuffer(new byte[] { 0 }) };
39 }
40
41 /**
42 * Returns {@code CR ('\r')} and {@code LF ('\n')} delimiters, which could
43 * be used for text-based line protocols.
44 */
45 public static ChannelBuffer[] lineDelimiter() {
46 return new ChannelBuffer[] {
47 ChannelBuffers.wrappedBuffer(new byte[] { '\r', '\n' }),
48 ChannelBuffers.wrappedBuffer(new byte[] { '\n' }),
49 };
50 }
51
52 private Delimiters() {
53 // Unused
54 }
55 }