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annotate src/org/tmatesoft/hg/repo/HgBranches.java @ 220:8de327242aa0

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Basic information about branches
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 19 May 2011 04:14:45 +0200
parents
children 883300108179
rev   line source
220
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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1 /*
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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2 * Copyright (c) 2011 TMate Software Ltd
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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3 *
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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4 * This program is free software; you can redistribute it and/or modify
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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5 * it under the terms of the GNU General Public License as published by
8de327242aa0 Basic information about branches
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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6 * the Free Software Foundation; version 2 of the License.
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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7 *
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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8 * This program is distributed in the hope that it will be useful,
8de327242aa0 Basic information about branches
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
8de327242aa0 Basic information about branches
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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11 * GNU General Public License for more details.
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12 *
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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13 * For information on how to redistribute this software under
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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14 * the terms of a license other than GNU General Public License
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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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.util.ArrayList;
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20 import java.util.Arrays;
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21 import java.util.Collections;
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22 import java.util.HashMap;
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23 import java.util.HashSet;
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24 import java.util.LinkedList;
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25 import java.util.List;
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26 import java.util.Map;
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27 import java.util.TreeMap;
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28
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29 import org.tmatesoft.hg.core.Nodeid;
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30 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
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31 import org.tmatesoft.hg.util.ProgressSupport;
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32
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33 /**
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34 *
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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35 * @author Artem Tikhomirov
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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36 * @author TMate Software Ltd.
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37 */
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38 public class HgBranches {
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39
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40 private final Map<String, BranchInfo> branches = new TreeMap<String, BranchInfo>();
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41 private final HgRepository repo;
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42
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43 HgBranches(HgRepository hgRepo) {
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44 repo = hgRepo;
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45 }
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46
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47 void collect(final ProgressSupport ps) {
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48 ps.start(1 + repo.getChangelog().getRevisionCount() * 2);
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49 final HgChangelog.ParentWalker pw = repo.getChangelog().new ParentWalker();
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50 pw.init();
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51 ps.worked(repo.getChangelog().getRevisionCount());
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52 final HashMap<String, Nodeid> branchStart = new HashMap<String, Nodeid>();
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53 final HashMap<String, Nodeid> branchLastSeen = new HashMap<String, Nodeid>();
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54 final HashMap<String, List<Nodeid>> branchHeads = new HashMap<String, List<Nodeid>>();
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55 final HashSet<String> closedBranches = new HashSet<String>();
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56 HgChangelog.Inspector insp = new HgChangelog.Inspector() {
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57
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58 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) {
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59 String branchName = cset.branch();
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60 if (!branchStart.containsKey(branchName)) {
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61 branchStart.put(branchName, nodeid);
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62 branchHeads.put(branchName, new LinkedList<Nodeid>());
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63 }
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64 branchLastSeen.remove(branchName);
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65 if ("1".equals(cset.extras().get("close"))) {
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66 branchHeads.get(branchName).add(nodeid); // XXX what if it still has children?
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67 closedBranches.add(branchName);
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68 } else {
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69 if (pw.hasChildren(nodeid)) {
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70 // children may be in another branch
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71 // and unless we later came across another element from this branch,
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72 // we need to record all these as valid heads
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73 // XXX what about next case: head1 with children in different branch, and head2 without children
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74 // head1 would get lost
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75 branchLastSeen.put(branchName, nodeid);
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76 } else {
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77 // no more children known for this node, it's (one of the) head of the branch
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78 branchHeads.get(branchName).add(nodeid);
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79 }
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80 }
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81 ps.worked(1);
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82 }
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83 };
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84 repo.getChangelog().all(insp);
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85 for (String bn : branchLastSeen.keySet()) {
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86 branchHeads.get(bn).add(branchLastSeen.get(bn));
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87 }
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88 for (String bn : branchStart.keySet()) {
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89 Nodeid[] heads = branchHeads.get(bn).toArray(new Nodeid[0]);
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90 BranchInfo bi = new BranchInfo(bn, branchStart.get(bn), heads, closedBranches.contains(bn));
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91 branches.put(bn, bi);
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92 }
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93 ps.done();
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94 }
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95
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96 public List<BranchInfo> getAllBranches() {
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97 return new LinkedList<BranchInfo>(branches.values());
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98
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99 }
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100
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101 public BranchInfo getBranch(String name) {
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102 return branches.get(name);
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103 }
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104
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105 public static class BranchInfo {
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106 private final String name;
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107 private final List<Nodeid> heads;
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108 private final boolean closed;
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109 private final Nodeid start;
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110
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111 BranchInfo(String branchName, Nodeid first, Nodeid[] branchHeads, boolean isClosed) {
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112 name = branchName;
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113 start = first;
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114 heads = Collections.unmodifiableList(new ArrayList<Nodeid>(Arrays.asList(branchHeads)));
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115 closed = isClosed;
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116 }
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117
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118 public String getName() {
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119 return name;
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120 }
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121 public boolean isClosed() {
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122 return closed;
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123 }
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124 public List<Nodeid> getHeads() {
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125 return heads;
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126 }
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127 // public Nodeid getTip() {
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128 // }
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129 public Nodeid getStart() {
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130 // first node where branch appears
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131 return start;
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132 }
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133 }
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134 }