Mercurial > hg4j

annotate src/org/tmatesoft/hg/internal/ByteArrayChannel.java @ 657:6334b0267103

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
ParentChildMap can supply RevisionMap. Refactor ArrayHelper to keep most of sorted/reverse index magic inside
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 04 Jul 2013 20:27:45 +0200
parents e1b29756f901
children
rev   line source
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
1 /*
608
e1b29756f901 Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
2 * Copyright (c) 2011-2013 TMate Software Ltd
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
3 *
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
4 * This program is free software; you can redistribute it and/or modify
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
5 * it under the terms of the GNU General Public License as published by
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
6 * the Free Software Foundation; version 2 of the License.
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
7 *
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
8 * This program is distributed in the hope that it will be useful,
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
11 * GNU General Public License for more details.
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
12 *
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
13 * For information on how to redistribute this software under
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
14 * the terms of a license other than GNU General Public License
130
7567f4a42fe5 Correct contact address
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 115
diff changeset
15 * contact TMate Software at support@hg4j.com
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
16 */
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
17 package org.tmatesoft.hg.internal;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
19 import java.nio.ByteBuffer;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
20 import java.util.LinkedList;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
21 import java.util.List;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
22
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
23 import org.tmatesoft.hg.util.ByteChannel;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
24
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
25 /**
608
e1b29756f901 Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
26 * {@link ByteChannel} implementation that serializes data into a byte array
e1b29756f901 Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
27 *
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
28 * @author Artem Tikhomirov
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
29 * @author TMate Software Ltd.
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
30 */
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
31 public class ByteArrayChannel implements ByteChannel {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
32 private final List<ByteBuffer> buffers;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 private ByteBuffer target;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
34 private byte[] result;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
35
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
36 public ByteArrayChannel() {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
37 this(-1);
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
38 }
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
39
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
40 public ByteArrayChannel(int size) {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
41 if (size == -1) {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
42 buffers = new LinkedList<ByteBuffer>();
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
43 } else {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
44 if (size < 0) {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
45 throw new IllegalArgumentException(String.valueOf(size));
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
46 }
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
47 buffers = null;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
48 target = ByteBuffer.allocate(size);
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
49 }
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
50 }
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
51
608
e1b29756f901 Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
52 /*
e1b29756f901 Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
53 * {@link #toArray()} calls do not clear data collected so far, subsequent {@link #write(ByteBuffer)}
e1b29756f901 Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
54 * augment collected content.
e1b29756f901 Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
55 */
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 130
diff changeset
56 public int write(ByteBuffer buffer) {
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
57 int rv = buffer.remaining();
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
58 if (buffers == null) {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
59 target.put(buffer);
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
60 } else {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
61 ByteBuffer copy = ByteBuffer.allocate(rv);
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
62 copy.put(buffer);
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
63 buffers.add(copy);
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
64 }
608
e1b29756f901 Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
65 result = null;
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
66 return rv;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
67 }
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
68
608
e1b29756f901 Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
69 /**
e1b29756f901 Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
70 * @return content accumulated so far
e1b29756f901 Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
71 */
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
72 public byte[] toArray() {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
73 if (result != null) {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
74 return result;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
75 }
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
76 if (buffers == null) {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
77 assert target.hasArray();
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
78 // int total = target.position();
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
79 // System.arraycopy(target.array(), new byte[total]);
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
80 // I don't want to duplicate byte[] for now
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
81 // although correct way of doing things is to make a copy and discard target
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
82 return target.array();
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
83 } else {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
84 int total = 0;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
85 for (ByteBuffer bb : buffers) {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
86 bb.flip();
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
87 total += bb.limit();
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
88 }
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
89 result = new byte[total];
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
90 int off = 0;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
91 for (ByteBuffer bb : buffers) {
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
92 bb.get(result, off, bb.limit());
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
93 off += bb.limit();
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
94 }
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
95 return result;
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
96 }
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
97 }
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
98 }