Mercurial > jhg

annotate src/org/tmatesoft/hg/core/HgCatCommand.java @ 519:934037edbea0

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Few toString() implementations to ease debug
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 20 Dec 2012 20:21:59 +0100
parents 31a89587eb04
children 78a9e26e670d
rev   line source
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
1 /*
396
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
2 * Copyright (c) 2011-2012 TMate Software Ltd
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
3 *
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
4 * This program is free software; you can redistribute it and/or modify
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
5 * it under the terms of the GNU General Public License as published by
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
6 * the Free Software Foundation; version 2 of the License.
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
7 *
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
8 * This program is distributed in the hope that it will be useful,
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
11 * GNU General Public License for more details.
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
12 *
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
13 * For information on how to redistribute this software under
7ec89d637f50 CatCommand
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: 121
diff changeset
15 * contact TMate Software at support@hg4j.com
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
16 */
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
17 package org.tmatesoft.hg.core;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
367
2fadf8695f8a Use 'revision index' instead of the vague 'local revision number' concept in the API
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 356
diff changeset
19 import static org.tmatesoft.hg.repo.HgInternals.wrongRevisionIndex;
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
20 import static org.tmatesoft.hg.repo.HgRepository.BAD_REVISION;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
21 import static org.tmatesoft.hg.repo.HgRepository.TIP;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
22
322
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
23 import java.io.IOException;
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
24 import java.nio.ByteBuffer;
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
25
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
26 import org.tmatesoft.hg.repo.HgDataFile;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
27 import org.tmatesoft.hg.repo.HgRepository;
427
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
28 import org.tmatesoft.hg.repo.HgRuntimeException;
322
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
29 import org.tmatesoft.hg.util.Adaptable;
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 107
diff changeset
30 import org.tmatesoft.hg.util.ByteChannel;
322
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
31 import org.tmatesoft.hg.util.CancelSupport;
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
32 import org.tmatesoft.hg.util.CancelledException;
133
4a948ec83980 core.Path to util.Path as it's not Hg repo dependant
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 131
diff changeset
33 import org.tmatesoft.hg.util.Path;
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
34
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
35 /**
131
aa1629f36482 Renamed .core classes to start with Hg prefix
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 130
diff changeset
36 * Command to obtain content of a file, 'hg cat' counterpart.
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
37 *
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
38 * @author Artem Tikhomirov
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
39 * @author TMate Software Ltd.
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
40 */
215
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
41 public class HgCatCommand extends HgAbstractCommand<HgCatCommand> {
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
42
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
43 private final HgRepository repo;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
44 private Path file;
367
2fadf8695f8a Use 'revision index' instead of the vague 'local revision number' concept in the API
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 356
diff changeset
45 private int revisionIndex = TIP;
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
46 private Nodeid revision;
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
47 private Nodeid cset;
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
48
131
aa1629f36482 Renamed .core classes to start with Hg prefix
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 130
diff changeset
49 public HgCatCommand(HgRepository hgRepo) {
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
50 repo = hgRepo;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
51 }
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
52
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
53 /**
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
54 * File to read, required parameter
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
55 * @param fname path to a repository file, can't be <code>null</code>
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
56 * @return <code>this</code> for convenience
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
57 * @throws IllegalArgumentException if supplied fname is null or points to directory
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
58 */
131
aa1629f36482 Renamed .core classes to start with Hg prefix
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 130
diff changeset
59 public HgCatCommand file(Path fname) {
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
60 if (fname == null || fname.isDirectory()) {
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
61 throw new IllegalArgumentException(String.valueOf(fname));
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
62 }
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
63 file = fname;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
64 return this;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
65 }
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
66
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
67 /**
368
8107b95f4280 Update Javadoc with 'revision index'
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 367
diff changeset
68 * Select specific revision of the file to cat with revision local index. Note, revision numbering is of particular file, not that of
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
69 * repository (i.e. revision 0 means initial content of the file, irrespective of changeset revision at the time of commit)
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
70 *
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
71 * Invocation of this method clears revision set with {@link #revision(Nodeid)} or {@link #revision(int)} earlier.
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
72 *
368
8107b95f4280 Update Javadoc with 'revision index'
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 367
diff changeset
73 * @param fileRevisionIndex - revision local index, non-negative, or one of predefined constants. Note, use of {@link HgRepository#BAD_REVISION},
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
74 * although possible, makes little sense (command would fail if executed).
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
75 * @return <code>this</code> for convenience
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
76 */
367
2fadf8695f8a Use 'revision index' instead of the vague 'local revision number' concept in the API
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 356
diff changeset
77 public HgCatCommand revision(int fileRevisionIndex) {
2fadf8695f8a Use 'revision index' instead of the vague 'local revision number' concept in the API
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 356
diff changeset
78 if (wrongRevisionIndex(fileRevisionIndex)) {
2fadf8695f8a Use 'revision index' instead of the vague 'local revision number' concept in the API
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 356
diff changeset
79 throw new IllegalArgumentException(String.valueOf(fileRevisionIndex));
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
80 }
367
2fadf8695f8a Use 'revision index' instead of the vague 'local revision number' concept in the API
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 356
diff changeset
81 revisionIndex = fileRevisionIndex;
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
82 revision = null;
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
83 cset = null;
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
84 return this;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
85 }
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
86
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
87 /**
367
2fadf8695f8a Use 'revision index' instead of the vague 'local revision number' concept in the API
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 356
diff changeset
88 * Select file revision to read. Note, this revision is file revision (i.e. the one from manifest), not the changeset revision.
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
89 *
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
90 * Invocation of this method clears revision set with {@link #revision(int)} or {@link #revision(Nodeid)} earlier.
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
91 *
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
92 * @param nodeid - unique file revision identifier, Note, use of <code>null</code> or {@link Nodeid#NULL} is senseless
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
93 * @return <code>this</code> for convenience
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
94 */
131
aa1629f36482 Renamed .core classes to start with Hg prefix
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 130
diff changeset
95 public HgCatCommand revision(Nodeid nodeid) {
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
96 if (nodeid != null && nodeid.isNull()) {
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
97 nodeid = null;
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
98 }
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
99 revision = nodeid;
367
2fadf8695f8a Use 'revision index' instead of the vague 'local revision number' concept in the API
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 356
diff changeset
100 revisionIndex = BAD_REVISION;
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
101 cset = null;
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
102 return this;
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
103 }
248
3fbfce107f94 Issue 8: Means to find out information about given file at specific changeset. Inner ManifestRevisionInspector got promoted to ManifestRevision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 237
diff changeset
104
3fbfce107f94 Issue 8: Means to find out information about given file at specific changeset. Inner ManifestRevisionInspector got promoted to ManifestRevision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 237
diff changeset
105 /**
3fbfce107f94 Issue 8: Means to find out information about given file at specific changeset. Inner ManifestRevisionInspector got promoted to ManifestRevision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 237
diff changeset
106 * Parameterize the command from file revision object.
3fbfce107f94 Issue 8: Means to find out information about given file at specific changeset. Inner ManifestRevisionInspector got promoted to ManifestRevision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 237
diff changeset
107 *
3fbfce107f94 Issue 8: Means to find out information about given file at specific changeset. Inner ManifestRevisionInspector got promoted to ManifestRevision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 237
diff changeset
108 * @param fileRev file revision to cat
3fbfce107f94 Issue 8: Means to find out information about given file at specific changeset. Inner ManifestRevisionInspector got promoted to ManifestRevision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 237
diff changeset
109 * @return <code>this</code> for convenience
3fbfce107f94 Issue 8: Means to find out information about given file at specific changeset. Inner ManifestRevisionInspector got promoted to ManifestRevision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 237
diff changeset
110 */
3fbfce107f94 Issue 8: Means to find out information about given file at specific changeset. Inner ManifestRevisionInspector got promoted to ManifestRevision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 237
diff changeset
111 public HgCatCommand revision(HgFileRevision fileRev) {
3fbfce107f94 Issue 8: Means to find out information about given file at specific changeset. Inner ManifestRevisionInspector got promoted to ManifestRevision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 237
diff changeset
112 return file(fileRev.getPath()).revision(fileRev.getRevision());
3fbfce107f94 Issue 8: Means to find out information about given file at specific changeset. Inner ManifestRevisionInspector got promoted to ManifestRevision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 237
diff changeset
113 }
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
114
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
115 /**
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
116 * Select whatever revision of the file that was actual at the time of the specified changeset. Unlike {@link #revision(int)} or {@link #revision(Nodeid)}, this method
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
117 * operates in terms of repository global revisions (aka changesets).
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
118 *
368
8107b95f4280 Update Javadoc with 'revision index'
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 367
diff changeset
119 * Invocation of this method clears selection of a file revision with its index.
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
120 *
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
121 * @param nodeid changeset revision
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
122 * @return <code>this</code> for convenience
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
123 */
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
124 public HgCatCommand changeset(Nodeid nodeid) {
367
2fadf8695f8a Use 'revision index' instead of the vague 'local revision number' concept in the API
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 356
diff changeset
125 revisionIndex = BAD_REVISION;
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
126 revision = null;
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
127 cset = nodeid;
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
128 return this;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
129 }
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
130
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
131 /**
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
132 * Runs the command with current set of parameters and pipes data to provided sink.
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
133 *
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
134 * @param sink output channel to write data to.
396
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
135 *
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
136 * @throws HgBadArgumentException if no target file node found
427
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
137 * @throws HgException subclass thereof to indicate specific issue with the command arguments or repository state
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
138 * @throws CancelledException if execution of the command was cancelled
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
139 * @throws IllegalArgumentException when command arguments are incomplete or wrong
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
140 */
396
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
141 public void execute(ByteChannel sink) throws HgException, CancelledException {
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
142 // XXX perhaps, IAE together with HgBadArgumentException is not the best idea
367
2fadf8695f8a Use 'revision index' instead of the vague 'local revision number' concept in the API
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 356
diff changeset
143 if (revisionIndex == BAD_REVISION && revision == null && cset == null) {
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
144 throw new IllegalArgumentException("File revision, corresponing local number, or a changset nodeid shall be specified");
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
145 }
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
146 if (file == null) {
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
147 throw new IllegalArgumentException("Name of the file is missing");
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
148 }
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 107
diff changeset
149 if (sink == null) {
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
150 throw new IllegalArgumentException("Need an output channel");
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
151 }
427
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
152 try {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
153 HgDataFile dataFile = repo.getFileNode(file);
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
154 if (!dataFile.exists()) {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
155 // TODO may benefit from repo.getStoragePath to print revlog location in addition to human-friendly file path
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
156 throw new HgPathNotFoundException(String.format("File %s not found in the repository", file), file);
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
157 }
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
158 int revToExtract;
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
159 if (cset != null) {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
160 int csetRev = repo.getChangelog().getRevisionIndex(cset);
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
161 Nodeid toExtract = null;
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
162 do {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
163 // TODO post-1.0 perhaps, HgChangesetFileSneaker may come handy?
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
164 toExtract = repo.getManifest().getFileRevision(csetRev, file);
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
165 if (toExtract == null) {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
166 if (dataFile.isCopy()) {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
167 file = dataFile.getCopySourceName();
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
168 dataFile = repo.getFileNode(file);
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
169 } else {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
170 break;
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
171 }
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
172 }
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
173 } while (toExtract == null);
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
174 if (toExtract == null) {
427
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
175 String m = String.format("File %s nor its origins were known at repository's %s revision", file, cset.shortNotation());
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
176 throw new HgPathNotFoundException(m, file).setRevision(cset);
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
177 }
427
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
178 revToExtract = dataFile.getRevisionIndex(toExtract);
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
179 } else if (revision != null) {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
180 revToExtract = dataFile.getRevisionIndex(revision);
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
181 } else {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
182 revToExtract = revisionIndex;
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
183 }
427
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
184 ByteChannel sinkWrap;
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
185 if (getCancelSupport(null, false) == null) {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
186 // no command-specific cancel helper, no need for extra proxy
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
187 // sink itself still may supply CS
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
188 sinkWrap = sink;
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
189 } else {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
190 // try CS from sink, if any. at least there is CS from command
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
191 CancelSupport cancelHelper = getCancelSupport(sink, true);
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
192 cancelHelper.checkCancelled();
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
193 sinkWrap = new ByteChannelProxy(sink, cancelHelper);
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
194 }
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
195 dataFile.contentWithFilters(revToExtract, sinkWrap);
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
196 } catch (HgRuntimeException ex) {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 423
diff changeset
197 throw new HgLibraryFailureException(ex);
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
198 }
322
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
199 }
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
200
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
201 private static class ByteChannelProxy implements ByteChannel, Adaptable {
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
202 private final ByteChannel delegate;
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
203 private final CancelSupport cancelHelper;
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
204
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
205 public ByteChannelProxy(ByteChannel _delegate, CancelSupport cs) {
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
206 assert _delegate != null;
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
207 delegate = _delegate;
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
208 cancelHelper = cs;
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
209 }
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
210 public int write(ByteBuffer buffer) throws IOException, CancelledException {
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
211 return delegate.write(buffer);
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
212 }
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
213
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
214 public <T> T getAdapter(Class<T> adapterClass) {
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
215 if (CancelSupport.class == adapterClass) {
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
216 return adapterClass.cast(cancelHelper);
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
217 }
356
91d75e1bac9f Consistent approach to deal with adaptable objects. Give adaptable precedence over instanceof to allow conditional response when classes do implement desired interface
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
218 return Adaptable.Factory.getAdapter(delegate, adapterClass, null);
322
d68dcb3b5f49 Propagate command's CancelSupport to low-level API. CancelSupport from context got priority over one from command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 248
diff changeset
219 }
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
220 }
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
221 }