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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 }