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annotate src/org/tmatesoft/hg/repo/HgBookmarks.java @ 510:90093ee56c0d

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Full-fledged test repo to follow file history. Investigating iteration direction alternatives (from new to old in addition to existing old to new)
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 13 Dec 2012 15:46:40 +0100
parents d2f6ab541330
children c56edf42be64
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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.Internals;
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28 import org.tmatesoft.hg.internal.LineReader;
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29 import org.tmatesoft.hg.util.LogFacility;
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30
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31 /**
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32 *
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33 * @author Artem Tikhomirov
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34 * @author TMate Software Ltd.
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35 */
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36 public final class HgBookmarks {
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37 private final Internals internalRepo;
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38 private Map<String, Nodeid> bookmarks = Collections.emptyMap();
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39 private String activeBookmark;
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40
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41 HgBookmarks(Internals internals) {
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42 internalRepo = internals;
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43 }
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44
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45 /*package-local*/ void read() throws HgInvalidControlFileException {
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46 final LogFacility log = internalRepo.getSessionContext().getLog();
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47 final HgRepository repo = internalRepo.getRepo();
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48 File all = internalRepo.getFileFromRepoDir(HgRepositoryFiles.Bookmarks.getName());
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49 LinkedHashMap<String, Nodeid> bm = new LinkedHashMap<String, Nodeid>();
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50 if (all.canRead()) {
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51 LineReader lr1 = new LineReader(all, log);
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52 ArrayList<String> c = new ArrayList<String>();
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53 lr1.read(new LineReader.SimpleLineCollector(), c);
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54 for (String s : c) {
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55 int x = s.indexOf(' ');
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56 try {
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57 if (x > 0) {
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58 Nodeid nid = Nodeid.fromAscii(s.substring(0, x));
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59 String name = new String(s.substring(x+1));
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60 if (repo.getChangelog().isKnown(nid)) {
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61 // copy name part not to drag complete line
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62 bm.put(name, nid);
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63 } else {
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64 log.dump(getClass(), LogFacility.Severity.Info, "Bookmark %s points to non-existent revision %s, ignored.", name, nid);
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65 }
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66 } else {
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67 log.dump(getClass(), LogFacility.Severity.Warn, "Can't parse bookmark entry: %s", s);
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68 }
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69 } catch (IllegalArgumentException ex) {
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70 log.dump(getClass(), LogFacility.Severity.Warn, ex, String.format("Can't parse bookmark entry: %s", s));
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71 }
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72 }
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73 bookmarks = bm;
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74 } else {
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75 bookmarks = Collections.emptyMap();
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76 }
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77
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78 activeBookmark = null;
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79 File active = internalRepo.getFileFromRepoDir(HgRepositoryFiles.BookmarksCurrent.getName());
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80 if (active.canRead()) {
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81 LineReader lr2 = new LineReader(active, log);
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82 ArrayList<String> c = new ArrayList<String>(2);
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83 lr2.read(new LineReader.SimpleLineCollector(), c);
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84 if (c.size() > 0) {
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85 activeBookmark = c.get(0);
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86 }
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87 }
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88 }
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89
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90 /**
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91 * Tell name of the active bookmark
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92 * @return <code>null</code> if none active
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93 */
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94 public String getActiveBookmarkName() {
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95 return activeBookmark;
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96 }
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97
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98 /**
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99 * Retrieve revision associated with the named bookmark.
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100 *
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101 * @param bookmarkName name of the bookmark
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102 * @return revision or <code>null</code> if bookmark is not known
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103 */
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104 public Nodeid getRevision(String bookmarkName) {
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105 return bookmarks.get(bookmarkName);
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106 }
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107
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108 /**
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109 * Retrieve all bookmarks known in the repository
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110 * @return collection with names, never <code>null</code>
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111 */
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112 public Collection<String> getAllBookmarks() {
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113 // bookmarks are initialized with atomic assignment,
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114 // hence can use view (not a synchronized copy) here
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115 return Collections.unmodifiableSet(bookmarks.keySet());
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116 }
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117 }