1 /*
2 * ====================================================================
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 * ====================================================================
20 *
21 * This software consists of voluntary contributions made by many
22 * individuals on behalf of the Apache Software Foundation. For more
23 * information on the Apache Software Foundation, please see
24 * <http://www.apache.org/>.
25 *
26 */
27
28 package org.apache.http;
29
30 import java.io.IOException;
31 import java.nio.ByteBuffer;
32 import java.nio.channels.ClosedChannelException;
33 import java.nio.channels.ReadableByteChannel;
34 import java.nio.charset.Charset;
35
36 public class ReadableByteChannelMock implements ReadableByteChannel {
37
38 private final String[] chunks;
39 private final Charset charset;
40
41 private int chunkCount = 0;
42
43 private ByteBuffer currentChunk;
44 private boolean eof = false;
45 private boolean closed = false;
46
47 public ReadableByteChannelMock(final String[] chunks, final Charset charset) {
48 super();
49 this.chunks = chunks;
50 this.charset = charset;
51 }
52
53 private void prepareChunk() {
54 if (this.currentChunk == null || !this.currentChunk.hasRemaining()) {
55 if (this.chunkCount < this.chunks.length) {
56 final String s = this.chunks[this.chunkCount];
57 this.chunkCount++;
58 this.currentChunk = ByteBuffer.wrap(s.getBytes(this.charset));
59 } else {
60 this.eof = true;
61 }
62 }
63 }
64
65 @Override
66 public int read(final ByteBuffer dst) throws IOException {
67 if (this.closed) {
68 throw new ClosedChannelException();
69 }
70 prepareChunk();
71 if (this.eof) {
72 return -1;
73 }
74 int i = 0;
75 while (dst.hasRemaining() && this.currentChunk.hasRemaining()) {
76 dst.put(this.currentChunk.get());
77 i++;
78 }
79 return i;
80 }
81
82 @Override
83 public void close() throws IOException {
84 this.closed = true;
85 }
86
87 @Override
88 public boolean isOpen() {
89 return !this.closed && !this.eof;
90 }
91
92 }