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annotate src/org/tmatesoft/hg/internal/AddRevInspector.java @ 709:497e697636fc

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Report merged lines as changed block if possible, not as a sequence of added/deleted blocks. To facilitate access to merge parent lines AddBlock got mergeLineAt() method that reports index of the line in the second parent (if any), while insertedAt() has been changed to report index in the first parent always
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 21 Aug 2013 16:23:27 +0200
parents ae2d439fbed3
children
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1 /*
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2 * Copyright (c) 2013 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.internal;
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18
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19 import java.util.HashMap;
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20 import java.util.Set;
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21
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22 import org.tmatesoft.hg.core.HgIOException;
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23 import org.tmatesoft.hg.core.Nodeid;
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24 import org.tmatesoft.hg.repo.HgBundle;
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25 import org.tmatesoft.hg.repo.HgBundle.GroupElement;
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26 import org.tmatesoft.hg.repo.HgDataFile;
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27 import org.tmatesoft.hg.repo.HgInvalidControlFileException;
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28 import org.tmatesoft.hg.repo.HgRepository;
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29 import org.tmatesoft.hg.repo.HgRuntimeException;
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30 import org.tmatesoft.hg.util.Pair;
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31
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32 /**
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33 * FIXME pretty much alike HgCloneCommand.WriteDownMate, shall converge
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34 *
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35 * @author Artem Tikhomirov
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36 * @author TMate Software Ltd.
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37 */
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38 public final class AddRevInspector implements HgBundle.Inspector {
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39 private final Internals repo;
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40 private final Transaction tr;
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41 private final FNCacheFile.Mediator fncache;
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42 private Set<Nodeid> added;
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43 private RevlogStreamWriter revlog;
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44 private RevMap clogRevs;
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45 private RevMap revlogRevs;
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46 private HgDataFile fileNode;
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47 private boolean newFile = false;
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48
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49 public AddRevInspector(Internals implRepo, Transaction transaction) {
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50 repo = implRepo;
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51 tr = transaction;
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52 fncache = new FNCacheFile.Mediator(implRepo, transaction);
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53 }
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54
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55 public void changelogStart() throws HgRuntimeException {
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56 RevlogStream rs = repo.getImplAccess().getChangelogStream();
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57 revlog = new RevlogStreamWriter(repo, rs, tr);
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58 revlogRevs = clogRevs = new RevMap(rs);
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59 }
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60
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61 public void changelogEnd() throws HgRuntimeException {
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62 revlog = null;
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63 revlogRevs = null;
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64 added = clogRevs.added();
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65 }
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66
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67 public void manifestStart() throws HgRuntimeException {
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68 RevlogStream rs = repo.getImplAccess().getManifestStream();
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69 revlog = new RevlogStreamWriter(repo, rs, tr);
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70 revlogRevs = new RevMap(rs);
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71 }
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72
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73 public void manifestEnd() throws HgRuntimeException {
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74 revlog = null;
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75 revlogRevs = null;
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76 }
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77
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78 public void fileStart(String name) throws HgRuntimeException {
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79 fileNode = repo.getRepo().getFileNode(name);
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80 newFile = !fileNode.exists();
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81 RevlogStream rs = repo.getImplAccess().getStream(fileNode);
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82 revlog = new RevlogStreamWriter(repo, rs, tr);
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83 revlogRevs = new RevMap(rs);
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84 }
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85
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86 public void fileEnd(String name) throws HgRuntimeException {
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87 if (newFile) {
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88 fncache.registerNew(fileNode.getPath(), revlog.getRevlogStream());
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89 }
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90 revlog = null;
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91 revlogRevs = null;
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92 }
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93
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94 public boolean element(GroupElement ge) throws HgRuntimeException {
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95 assert clogRevs != null;
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96 assert revlogRevs != null;
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97 if (revlog.getRevlogStream().findRevisionIndex(ge.node()) != HgRepository.BAD_REVISION) {
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98 // HgRemoteRepository.getChanges(common) builds a bundle that includes these common
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99 // revisions. Hence, shall not add these common (i.e. known locally) revisions
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100 // once again
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101 return true;
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102 }
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103 try {
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104 Pair<Integer, Nodeid> newRev = revlog.addPatchRevision(ge, clogRevs, revlogRevs);
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105 revlogRevs.update(newRev.first(), newRev.second());
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106 return true;
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107 } catch (HgIOException ex) {
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108 throw new HgInvalidControlFileException(ex, true);
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109 }
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110 }
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111
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112 public RevisionSet addedChangesets() {
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113 return new RevisionSet(added);
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114 }
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115
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116 public void done() throws HgIOException {
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117 fncache.complete();
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118 }
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119
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120 private static class RevMap implements RevlogStreamWriter.RevisionToIndexMap {
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121
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122 private final RevlogStream revlog;
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123 private HashMap<Nodeid, Integer> added = new HashMap<Nodeid, Integer>();
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124
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125 public RevMap(RevlogStream revlogStream) {
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126 revlog = revlogStream;
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127 }
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128
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129 public int revisionIndex(Nodeid revision) {
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130 Integer a = added.get(revision);
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131 if (a != null) {
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132 return a;
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133 }
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134 int f = revlog.findRevisionIndex(revision);
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135 return f == HgRepository.BAD_REVISION ? HgRepository.NO_REVISION : f;
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136 }
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137
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138 public void update(Integer revIndex, Nodeid rev) {
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139 added.put(rev, revIndex);
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140 }
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141
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142 Set<Nodeid> added() {
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143 return added.keySet();
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144 }
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145 }
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146 }