Mercurial > hg4j

annotate src/org/tmatesoft/hg/util/RegularFileInfo.java @ 456:909306e412e2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Refactor LogFacility and SessionContext, better API for both
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 18 Jun 2012 16:54:00 +0200
parents 48f993aa2f41
children c02b5710d9ac
rev   line source
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
1 /*
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
2 * Copyright (c) 2011-2012 TMate Software Ltd
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
3 *
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
4 * This program is free software; you can redistribute it and/or modify
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
5 * it under the terms of the GNU General Public License as published by
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
6 * the Free Software Foundation; version 2 of the License.
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
7 *
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
8 * This program is distributed in the hope that it will be useful,
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
11 * GNU General Public License for more details.
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
12 *
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
13 * For information on how to redistribute this software under
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
14 * the terms of a license other than GNU General Public License
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
15 * contact TMate Software at support@hg4j.com
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
16 */
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
17 package org.tmatesoft.hg.util;
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
456
909306e412e2 Refactor LogFacility and SessionContext, better API for both
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
19 import static org.tmatesoft.hg.util.LogFacility.Severity.Info;
909306e412e2 Refactor LogFacility and SessionContext, better API for both
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
20
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
21 import java.io.File;
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
22 import java.io.FileInputStream;
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
23 import java.io.FileNotFoundException;
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
24 import java.io.IOException;
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
25 import java.nio.ByteBuffer;
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
26 import java.nio.channels.ClosedChannelException;
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
27 import java.nio.channels.ReadableByteChannel;
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
28
425
48f993aa2f41 FIXMEs: exceptions, javadoc
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 413
diff changeset
29 import org.tmatesoft.hg.core.SessionContext;
295
981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 287
diff changeset
30 import org.tmatesoft.hg.internal.StreamLogFacility;
981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 287
diff changeset
31
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
32 /**
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 *
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
34 * @author Artem Tikhomirov
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
35 * @author TMate Software Ltd.
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
36 */
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
37 public class RegularFileInfo implements FileInfo {
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
38 private final boolean supportsExec, supportsLink;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
39 private final RegularFileStats fileFlagsHelper; // null if both supportsLink and supportExec are false
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
40 private File file;
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
41
425
48f993aa2f41 FIXMEs: exceptions, javadoc
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 413
diff changeset
42 public RegularFileInfo(SessionContext ctx) {
48f993aa2f41 FIXMEs: exceptions, javadoc
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 413
diff changeset
43 this(ctx, false, false);
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
44 }
425
48f993aa2f41 FIXMEs: exceptions, javadoc
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 413
diff changeset
45 public RegularFileInfo(SessionContext ctx, boolean supportExecFlag, boolean supportSymlink) {
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
46 supportsLink = supportSymlink;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
47 supportsExec = supportExecFlag;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
48 if (supportSymlink || supportExecFlag) {
425
48f993aa2f41 FIXMEs: exceptions, javadoc
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 413
diff changeset
49 fileFlagsHelper = new RegularFileStats(ctx);
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
50 } else {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
51 fileFlagsHelper = null;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
52 }
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
53 }
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
54
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
55 public void init(File f) {
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
56 file = f;
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
57 if (fileFlagsHelper != null) {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
58 fileFlagsHelper.init(file);
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
59 }
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
60 }
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
61
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
62 public boolean exists() {
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
63 // java.io.File for symlinks without proper target says it doesn't exist.
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
64 // since we found this symlink in directory listing, it's safe to say it exists just based on the fact it's link
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
65 return isSymlink() || (file.canRead() && file.isFile());
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
66 }
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
67
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
68 public int lastModified() {
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
69 // TODO post-1.0 for symlinks, this returns incorrect mtime of the target file, not that of link itself
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
70 // Besides, timestame if link points to non-existing file is 0.
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
71 // However, it result only in slowdown in WCStatusCollector, as it need to perform additional content check
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
72 return (int) (file.lastModified() / 1000);
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
73 }
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
74
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
75 public long length() {
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
76 if (isSymlink()) {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
77 return getLinkTargetBytes().length;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
78 }
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
79 return file.length();
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
80 }
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
81
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
82 public ReadableByteChannel newInputChannel() {
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
83 try {
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
84 if (isSymlink()) {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
85 return new ByteArrayReadableChannel(getLinkTargetBytes());
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
86 } else {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
87 return new FileInputStream(file).getChannel();
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
88 }
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
89 } catch (FileNotFoundException ex) {
456
909306e412e2 Refactor LogFacility and SessionContext, better API for both
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
90 StreamLogFacility.newDefault().dump(getClass(), Info, ex, null);
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
91 // shall not happen, provided this class is used correctly
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
92 return new ByteArrayReadableChannel(null);
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
93 }
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
94 }
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
95
413
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
96 public boolean isExecutable() {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
97 return supportsExec && fileFlagsHelper.isExecutable();
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
98 }
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
99
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
100 public boolean isSymlink() {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
101 return supportsLink && fileFlagsHelper.isSymlink();
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
102 }
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
103
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
104 private byte[] getLinkTargetBytes() {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
105 assert isSymlink();
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
106 // no idea what encoding Mercurial uses for link targets, assume platform native is ok
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
107 return fileFlagsHelper.getSymlinkTarget().getBytes();
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
108 }
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
109
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
110
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
111 private static class ByteArrayReadableChannel implements ReadableByteChannel {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
112 private final byte[] data;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
113 private boolean closed = false; // initially open
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
114 private int firstAvailIndex = 0;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
115
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
116 ByteArrayReadableChannel(byte[] dataToStream) {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
117 data = dataToStream;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
118 }
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
119
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
120 public boolean isOpen() {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
121 return !closed;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
122 }
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
123
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
124 public void close() throws IOException {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
125 closed = true;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
126 }
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
127
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
128 public int read(ByteBuffer dst) throws IOException {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
129 if (closed) {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
130 throw new ClosedChannelException();
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
131 }
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
132 int remainingBytes = data.length - firstAvailIndex;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
133 if (data == null || remainingBytes == 0) {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
134 // EOF right away
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
135 return -1;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
136 }
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
137 int x = Math.min(dst.remaining(), remainingBytes);
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
138 for (int i = firstAvailIndex, lim = firstAvailIndex + x; i < lim; i++) {
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
139 dst.put(data[i]);
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
140 }
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
141 firstAvailIndex += x;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
142 return x;
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
143 }
7f27122011c3 Support and respect for symbolic links and executable flag, with /bin/ls backed implementation to discover these
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
144 }
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
145 }