Mercurial > hg4j

annotate src/org/tmatesoft/hg/internal/FileContentSupplier.java @ 694:7efabe0cddcf

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Speed up (a) file rename history to minimize file reads; (b) file.isCopy(int) to read metadata for few revisions at once (use pattern assumes earlier revisions are likely to be queried, too); (c) HgIgnore.isIgnored by caching matched initial fragments (to substitute more expensive Matcher.matches with cheaper HashMap.contains)
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 05 Aug 2013 17:42:10 +0200
parents 12a4f60ea972
children
rev   line source
586
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
1 /*
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
2 * Copyright (c) 2013 TMate Software Ltd
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
3 *
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
4 * This program is free software; you can redistribute it and/or modify
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
5 * it under the terms of the GNU General Public License as published by
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
6 * the Free Software Foundation; version 2 of the License.
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
7 *
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
8 * This program is distributed in the hope that it will be useful,
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
11 * GNU General Public License for more details.
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
12 *
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
13 * For information on how to redistribute this software under
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
14 * the terms of a license other than GNU General Public License
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
15 * contact TMate Software at support@hg4j.com
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
16 */
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
17 package org.tmatesoft.hg.internal;
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
19 import java.io.File;
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
20 import java.io.FileInputStream;
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
21 import java.io.IOException;
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
22 import java.nio.ByteBuffer;
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
23 import java.nio.channels.FileChannel;
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
24
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
25 import org.tmatesoft.hg.core.HgIOException;
618
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
26 import org.tmatesoft.hg.core.SessionContext;
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
27 import org.tmatesoft.hg.internal.DataSerializer.DataSource;
586
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
28 import org.tmatesoft.hg.repo.HgRepository;
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
29 import org.tmatesoft.hg.util.Path;
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
30
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
31 /**
618
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
32 * {@link DataSource} that reads from regular files
586
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 *
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
34 * @author Artem Tikhomirov
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
35 * @author TMate Software Ltd.
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
36 */
618
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
37 public class FileContentSupplier implements DataSource {
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
38 private final File file;
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
39 private final SessionContext ctx;
586
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
40
618
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
41 public FileContentSupplier(HgRepository repo, Path file) {
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
42 this(repo, new File(repo.getWorkingDir(), file.toString()));
586
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
43 }
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
44
618
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
45 public FileContentSupplier(SessionContext.Source ctxSource, File f) {
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
46 ctx = ctxSource.getSessionContext();
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
47 file = f;
586
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
48 }
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
49
618
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
50 public void serialize(DataSerializer out) throws HgIOException {
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
51 FileInputStream fis = null;
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
52 try {
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
53 fis = new FileInputStream(file);
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
54 FileChannel fc = fis.getChannel();
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
55 ByteBuffer buffer = ByteBuffer.allocate((int) Math.min(100*1024, fc.size()));
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
56 while (fc.read(buffer) != -1) {
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
57 buffer.flip();
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
58 // #allocate() above ensures backing array
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
59 out.write(buffer.array(), 0, buffer.limit());
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
60 buffer.clear();
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
61 }
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
62 } catch (IOException ex) {
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
63 throw new HgIOException("Failed to get content of the file", ex, file);
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
64 } finally {
654
12a4f60ea972 1) Console push tool. 2) Pass class to blame into FileUtils
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 618
diff changeset
65 new FileUtils(ctx.getLog(), this).closeQuietly(fis);
586
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
66 }
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
67 }
618
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
68
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
69 public int serializeLength() {
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
70 return Internals.ltoi(file.length());
7c0d2ce340b8 Refactor approach how content finds it way down to a commit revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 591
diff changeset
71 }
586
73c20c648c1f HgCommitCommand initial support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
72 }