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comparison src/org/tmatesoft/hg/core/HgLogCommand.java @ 131:aa1629f36482

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Renamed .core classes to start with Hg prefix
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 16 Feb 2011 20:47:56 +0100
parents src/org/tmatesoft/hg/core/LogCommand.java@645829962785
children 4a948ec83980
comparison
equal deleted inserted replaced
130:7567f4a42fe5 131:aa1629f36482
1 /*
2 * Copyright (c) 2011 TMate Software Ltd
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * For information on how to redistribute this software under
14 * the terms of a license other than GNU General Public License
15 * contact TMate Software at support@hg4j.com
16 */
17 package org.tmatesoft.hg.core;
18
19 import static org.tmatesoft.hg.repo.HgRepository.TIP;
20
21 import java.util.Calendar;
22 import java.util.Collections;
23 import java.util.ConcurrentModificationException;
24 import java.util.LinkedList;
25 import java.util.List;
26 import java.util.Set;
27 import java.util.TreeSet;
28
29 import org.tmatesoft.hg.repo.HgChangelog.Changeset;
30 import org.tmatesoft.hg.repo.HgChangelog;
31 import org.tmatesoft.hg.repo.HgDataFile;
32 import org.tmatesoft.hg.repo.HgRepository;
33 import org.tmatesoft.hg.repo.HgStatusCollector;
34 import org.tmatesoft.hg.util.PathPool;
35
36
37 /**
38 * Access to changelog, 'hg log' command counterpart.
39 *
40 * <pre>
41 * Usage:
42 * new LogCommand().limit(20).branch("maintenance-2.1").user("me").execute(new MyHandler());
43 * </pre>
44 * Not thread-safe (each thread has to use own {@link HgLogCommand} instance).
45 *
46 * @author Artem Tikhomirov
47 * @author TMate Software Ltd.
48 */
49 public class HgLogCommand implements HgChangelog.Inspector {
50
51 private final HgRepository repo;
52 private Set<String> users;
53 private Set<String> branches;
54 private int limit = 0, count = 0;
55 private int startRev = 0, endRev = TIP;
56 private Handler delegate;
57 private Calendar date;
58 private Path file;
59 private boolean followHistory; // makes sense only when file != null
60 private HgChangeset changeset;
61
62 public HgLogCommand(HgRepository hgRepo) {
63 repo = hgRepo;
64 }
65
66 /**
67 * Limit search to specified user. Multiple user names may be specified.
68 * @param user - full or partial name of the user, case-insensitive, non-null.
69 * @return <code>this</code> instance for convenience
70 */
71 public HgLogCommand user(String user) {
72 if (user == null) {
73 throw new IllegalArgumentException();
74 }
75 if (users == null) {
76 users = new TreeSet<String>();
77 }
78 users.add(user.toLowerCase());
79 return this;
80 }
81
82 /**
83 * Limit search to specified branch. Multiple branch specification possible (changeset from any of these
84 * would be included in result). If unspecified, all branches are considered.
85 * @param branch - branch name, case-sensitive, non-null.
86 * @return <code>this</code> instance for convenience
87 */
88 public HgLogCommand branch(String branch) {
89 if (branch == null) {
90 throw new IllegalArgumentException();
91 }
92 if (branches == null) {
93 branches = new TreeSet<String>();
94 }
95 branches.add(branch);
96 return this;
97 }
98
99 // limit search to specific date
100 // multiple?
101 public HgLogCommand date(Calendar date) {
102 this.date = date;
103 // FIXME implement
104 // isSet(field) - false => don't use in detection of 'same date'
105 throw HgRepository.notImplemented();
106 }
107
108 /**
109 *
110 * @param num - number of changeset to produce. Pass 0 to clear the limit.
111 * @return <code>this</code> instance for convenience
112 */
113 public HgLogCommand limit(int num) {
114 limit = num;
115 return this;
116 }
117
118 /**
119 * Limit to specified subset of Changelog, [min(rev1,rev2), max(rev1,rev2)], inclusive.
120 * Revision may be specified with {@link HgRepository#TIP}
121 * @param rev1
122 * @param rev2
123 * @return <code>this</code> instance for convenience
124 */
125 public HgLogCommand range(int rev1, int rev2) {
126 if (rev1 != TIP && rev2 != TIP) {
127 startRev = rev2 < rev1 ? rev2 : rev1;
128 endRev = startRev == rev2 ? rev1 : rev2;
129 } else if (rev1 == TIP && rev2 != TIP) {
130 startRev = rev2;
131 endRev = rev1;
132 } else {
133 startRev = rev1;
134 endRev = rev2;
135 }
136 return this;
137 }
138
139 /**
140 * Visit history of a given file only.
141 * @param file path relative to repository root. Pass <code>null</code> to reset.
142 * @param followCopyRename true to report changesets of the original file(-s), if copy/rename ever occured to the file.
143 */
144 public HgLogCommand file(Path file, boolean followCopyRename) {
145 // multiple? Bad idea, would need to include extra method into Handler to tell start of next file
146 this.file = file;
147 followHistory = followCopyRename;
148 return this;
149 }
150
151 /**
152 * Similar to {@link #execute(org.tmatesoft.hg.repo.Changeset.Inspector)}, collects and return result as a list.
153 */
154 public List<HgChangeset> execute() {
155 CollectHandler collector = new CollectHandler();
156 execute(collector);
157 return collector.getChanges();
158 }
159
160 /**
161 *
162 * @param inspector
163 * @throws IllegalArgumentException when inspector argument is null
164 * @throws ConcurrentModificationException if this log command instance is already running
165 */
166 public void execute(Handler handler) {
167 if (handler == null) {
168 throw new IllegalArgumentException();
169 }
170 if (delegate != null) {
171 throw new ConcurrentModificationException();
172 }
173 try {
174 delegate = handler;
175 count = 0;
176 changeset = new HgChangeset(new HgStatusCollector(repo), new PathPool(repo.getPathHelper()));
177 if (file == null) {
178 repo.getChangelog().range(startRev, endRev, this);
179 } else {
180 HgDataFile fileNode = repo.getFileNode(file);
181 fileNode.history(startRev, endRev, this);
182 if (fileNode.isCopy()) {
183 // even if we do not follow history, report file rename
184 do {
185 if (handler instanceof FileHistoryHandler) {
186 FileRevision src = new FileRevision(repo, fileNode.getCopySourceRevision(), fileNode.getCopySourceName());
187 FileRevision dst = new FileRevision(repo, fileNode.getRevision(0), fileNode.getPath());
188 ((FileHistoryHandler) handler).copy(src, dst);
189 }
190 if (limit > 0 && count >= limit) {
191 // if limit reach, follow is useless.
192 break;
193 }
194 if (followHistory) {
195 fileNode = repo.getFileNode(fileNode.getCopySourceName());
196 fileNode.history(this);
197 }
198 } while (followHistory && fileNode.isCopy());
199 }
200 }
201 } finally {
202 delegate = null;
203 changeset = null;
204 }
205 }
206
207 //
208
209 public void next(int revisionNumber, Nodeid nodeid, Changeset cset) {
210 if (limit > 0 && count >= limit) {
211 return;
212 }
213 if (branches != null && !branches.contains(cset.branch())) {
214 return;
215 }
216 if (users != null) {
217 String csetUser = cset.user().toLowerCase();
218 boolean found = false;
219 for (String u : users) {
220 if (csetUser.indexOf(u) != -1) {
221 found = true;
222 break;
223 }
224 }
225 if (!found) {
226 return;
227 }
228 }
229 if (date != null) {
230 // FIXME
231 }
232 count++;
233 changeset.init(revisionNumber, nodeid, cset);
234 delegate.next(changeset);
235 }
236
237 public interface Handler {
238 /**
239 * @param changeset not necessarily a distinct instance each time, {@link HgChangeset#clone() clone()} if need a copy.
240 */
241 void next(HgChangeset changeset);
242 }
243
244 /**
245 * When {@link HgLogCommand} is executed against file, handler passed to {@link HgLogCommand#execute(Handler)} may optionally
246 * implement this interface to get information about file renames. Method {@link #copy(FileRevision, FileRevision)} would
247 * get invoked prior any changeset of the original file (if file history being followed) is reported via {@link #next(HgChangeset)}.
248 *
249 * For {@link HgLogCommand#file(Path, boolean)} with renamed file path and follow argument set to false,
250 * {@link #copy(FileRevision, FileRevision)} would be invoked for the first copy/rename in the history of the file, but not
251 * followed by any changesets.
252 *
253 * @author Artem Tikhomirov
254 * @author TMate Software Ltd.
255 */
256 public interface FileHistoryHandler extends Handler {
257 // XXX perhaps, should distinguish copy from rename? And what about merged revisions and following them?
258 void copy(FileRevision from, FileRevision to);
259 }
260
261 public static class CollectHandler implements Handler {
262 private final List<HgChangeset> result = new LinkedList<HgChangeset>();
263
264 public List<HgChangeset> getChanges() {
265 return Collections.unmodifiableList(result);
266 }
267
268 public void next(HgChangeset changeset) {
269 result.add(changeset.clone());
270 }
271 }
272
273 public static final class FileRevision {
274 private final HgRepository repo;
275 private final Nodeid revision;
276 private final Path path;
277
278 /*package-local*/FileRevision(HgRepository hgRepo, Nodeid rev, Path p) {
279 if (hgRepo == null || rev == null || p == null) {
280 throw new IllegalArgumentException();
281 }
282 repo = hgRepo;
283 revision = rev;
284 path = p;
285 }
286
287 public Path getPath() {
288 return path;
289 }
290 public Nodeid getRevision() {
291 return revision;
292 }
293 public byte[] getContent() {
294 // XXX Content wrapper, to allow formats other than byte[], e.g. Stream, DataAccess, etc?
295 return repo.getFileNode(path).content(revision);
296 }
297 }
298 }