Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgBookmarks.java @ 486:d740edfff563

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Provisional support for Mercurial lock mechanism
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 10 Aug 2012 21:03:03 +0200
parents ae4d6604debd
children b3c16d1aede0
rev   line source
484
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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1 /*
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2 * Copyright (c) 2012 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.repo;
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18
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19 import java.io.File;
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20 import java.util.ArrayList;
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21 import java.util.Collection;
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22 import java.util.Collections;
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23 import java.util.LinkedHashMap;
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24 import java.util.Map;
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25
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26 import org.tmatesoft.hg.core.Nodeid;
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27 import org.tmatesoft.hg.internal.LineReader;
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28 import org.tmatesoft.hg.util.LogFacility;
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29
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30 /**
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31 *
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32 * @author Artem Tikhomirov
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33 * @author TMate Software Ltd.
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34 */
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35 public final class HgBookmarks {
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36 private final HgRepository repo;
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37 private Map<String, Nodeid> bookmarks = Collections.emptyMap();
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38 private String activeBookmark;
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39
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40 HgBookmarks(HgRepository hgRepo) {
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41 repo = hgRepo;
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42 }
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43
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44 /*package-local*/ void read() throws HgInvalidControlFileException {
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45 final LogFacility log = repo.getContext().getLog();
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46 File all = new File (repo.getRepositoryRoot(), HgRepositoryFiles.Bookmarks.getName());
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47 LinkedHashMap<String, Nodeid> bm = new LinkedHashMap<String, Nodeid>();
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48 if (all.canRead()) {
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49 LineReader lr1 = new LineReader(all, log);
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50 ArrayList<String> c = new ArrayList<String>();
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51 lr1.read(new LineReader.SimpleLineCollector(), c);
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52 for (String s : c) {
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53 int x = s.indexOf(' ');
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54 try {
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55 if (x > 0) {
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56 Nodeid nid = Nodeid.fromAscii(s.substring(0, x));
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57 String name = new String(s.substring(x+1));
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58 if (repo.getChangelog().isKnown(nid)) {
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59 // copy name part not to drag complete line
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60 bm.put(name, nid);
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61 } else {
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62 log.dump(getClass(), LogFacility.Severity.Info, "Bookmark %s points to non-existent revision %s, ignored.", name, nid);
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63 }
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64 } else {
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65 log.dump(getClass(), LogFacility.Severity.Warn, "Can't parse bookmark entry: %s", s);
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66 }
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67 } catch (IllegalArgumentException ex) {
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68 log.dump(getClass(), LogFacility.Severity.Warn, ex, String.format("Can't parse bookmark entry: %s", s));
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69 }
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70 }
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71 bookmarks = bm;
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72 } else {
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73 bookmarks = Collections.emptyMap();
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74 }
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75
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76 activeBookmark = null;
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77 File active = new File(repo.getRepositoryRoot(), HgRepositoryFiles.BookmarksCurrent.getName());
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78 if (active.canRead()) {
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79 LineReader lr2 = new LineReader(active, repo.getContext().getLog());
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80 ArrayList<String> c = new ArrayList<String>(2);
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81 lr2.read(new LineReader.SimpleLineCollector(), c);
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82 if (c.size() > 0) {
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83 activeBookmark = c.get(0);
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84 }
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85 }
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86 }
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87
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88 /**
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89 * Tell name of the active bookmark
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90 * @return <code>null</code> if none active
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91 */
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92 public String getActiveBookmarkName() {
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93 return activeBookmark;
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94 }
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95
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96 /**
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97 * Retrieve revision associated with the named bookmark.
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98 *
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99 * @param bookmarkName name of the bookmark
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100 * @return revision or <code>null</code> if bookmark is not known
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101 */
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102 public Nodeid getRevision(String bookmarkName) {
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103 return bookmarks.get(bookmarkName);
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104 }
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105
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106 /**
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107 * Retrieve all bookmarks known in the repository
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108 * @return collection with names, never <code>null</code>
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109 */
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110 public Collection<String> getAllBookmarks() {
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111 // bookmarks are initialized with atomic assignment,
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112 // hence can use view (not a synchronized copy) here
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113 return Collections.unmodifiableSet(bookmarks.keySet());
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114 }
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115 }