Mercurial > jhg

annotate src/org/tmatesoft/hg/core/HgCatCommand.java @ 354:5f9073eabf06

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Propagate errors with exceptions up to a end client
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 01 Dec 2011 05:21:40 +0100
parents d68dcb3b5f49
children 91d75e1bac9f
rev   line source
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
1 /*
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
2 * Copyright (c) 2011 TMate Software Ltd
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
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
19 import static org.tmatesoft.hg.repo.HgInternals.wrongLocalRevision;
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
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
23 import java.io.FileNotFoundException;
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
24 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
25 import java.nio.ByteBuffer;
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
26
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
27 import org.tmatesoft.hg.repo.HgDataFile;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
28 import org.tmatesoft.hg.repo.HgRepository;
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;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
45 private int localRevision = TIP;
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 /**
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
68 * Select specific local revision of the file to cat. Note, revision numbering is of particular file, not that of
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 *
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
73 * XXX rev can't be WORKING_COPY (if allowed, need to implement in #execute())
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
74 * @param rev local revision number, non-negative, or one of predefined constants. Note, use of {@link HgRepository#BAD_REVISION},
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
75 * 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
76 * @return <code>this</code> for convenience
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
77 */
131
aa1629f36482 Renamed .core classes to start with Hg prefix
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 130
diff changeset
78 public HgCatCommand revision(int rev) {
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
79 if (wrongLocalRevision(rev)) {
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
80 throw new IllegalArgumentException(String.valueOf(rev));
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
81 }
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
82 localRevision = rev;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
83 revision = null;
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
84 cset = null;
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
85 return this;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
86 }
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
87
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
88 /**
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
89 * Select revision to read. Note, this revision is file revision (i.e. the one from manifest), not the changeset revision.
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
90 *
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
91 * 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
92 *
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
93 * @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
94 * @return <code>this</code> for convenience
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
95 */
131
aa1629f36482 Renamed .core classes to start with Hg prefix
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 130
diff changeset
96 public HgCatCommand revision(Nodeid nodeid) {
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
97 if (nodeid != null && nodeid.isNull()) {
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
98 nodeid = null;
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
99 }
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
100 revision = nodeid;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
101 localRevision = BAD_REVISION;
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
102 cset = null;
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
103 return this;
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
104 }
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
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 /**
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 * 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
108 *
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 * @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
110 * @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
111 */
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 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
113 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
114 }
232
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 /**
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
117 * 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
118 * 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
119 *
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
120 * Invocation of this method clears local file revisions selection.
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
121 *
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
122 * @param nodeid changeset revision
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
123 * @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
124 */
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
125 public HgCatCommand changeset(Nodeid nodeid) {
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
126 localRevision = BAD_REVISION;
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
127 revision = null;
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
128 cset = nodeid;
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
129 return this;
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
130 }
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
131
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
132 /**
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
133 * 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
134 *
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
135 * @param sink output channel to write data to.
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
136 * @throws HgDataStreamException
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
137 * @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
138 */
354
5f9073eabf06 Propagate errors with exceptions up to a end client
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 322
diff changeset
139 public void execute(ByteChannel sink) throws HgDataStreamException, HgInvalidControlFileException, CancelledException {
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
140 if (localRevision == BAD_REVISION && revision == null && cset == null) {
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
141 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
142 }
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
143 if (file == null) {
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
144 throw new IllegalArgumentException("Name of the file is missing");
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
145 }
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 107
diff changeset
146 if (sink == null) {
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 133
diff changeset
147 throw new IllegalArgumentException("Need an output channel");
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
148 }
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
149 HgDataFile dataFile = repo.getFileNode(file);
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
150 if (!dataFile.exists()) {
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
151 throw new HgDataStreamException(file, new FileNotFoundException(file.toString()));
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
152 }
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 107
diff changeset
153 int revToExtract;
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
154 if (cset != null) {
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
155 int csetRev = repo.getChangelog().getLocalRevision(cset);
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
156 Nodeid toExtract = null;
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
157 do {
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
158 toExtract = repo.getManifest().getFileRevision(csetRev, file);
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
159 if (toExtract == null) {
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
160 if (dataFile.isCopy()) {
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
161 file = dataFile.getCopySourceName();
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
162 dataFile = repo.getFileNode(file);
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
163 } else {
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
164 break;
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
165 }
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
166 }
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
167 } while (toExtract == null);
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
168 if (toExtract == null) {
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
169 throw new HgBadStateException(String.format("File %s nor its origins were not known at repository %s revision", file, cset.shortNotation()));
232
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
170 }
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
171 revToExtract = dataFile.getLocalRevision(toExtract);
b7347daa50e3 Allow to cat a file with changeset revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 215
diff changeset
172 } else if (revision != null) {
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 107
diff changeset
173 revToExtract = dataFile.getLocalRevision(revision);
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
174 } else {
115
c0cc2535462c Introduced channels to pipeline (and easily filter) data streams
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 107
diff changeset
175 revToExtract = localRevision;
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
176 }
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
177 ByteChannel sinkWrap;
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
178 if (getCancelSupport(null, false) == 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
179 // no command-specific cancel helper, no need for extra proxy
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
180 // sink itself still may supply 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
181 sinkWrap = sink;
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
182 } else {
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
183 // try CS from sink, if any. at least there is CS from command
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
184 CancelSupport cancelHelper = getCancelSupport(sink, true);
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
185 cancelHelper.checkCancelled();
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
186 sinkWrap = new ByteChannelProxy(sink, 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
187 }
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
188 dataFile.contentWithFilters(revToExtract, sinkWrap);
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
189 }
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
190
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
191 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
192 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
193 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
194
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
195 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
196 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
197 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
198 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
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 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
201 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
202 }
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
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 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
205 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
206 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
207 }
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 if (delegate instanceof 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
209 return ((Adaptable) delegate).getAdapter(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
210 }
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 if (adapterClass.isInstance(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
212 return adapterClass.cast(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
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 return 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
215 }
107
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
216 }
7ec89d637f50 CatCommand
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
217 }