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annotate src/org/tmatesoft/hg/core/HgStatusCommand.java @ 215:41a778e3fd31

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Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 17 May 2011 00:56:54 +0200
parents d51f1c6aaa28
children 1ec6b327a6ac
rev   line source
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1 /*
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2 * Copyright (c) 2011 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.core;
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18
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19 import static org.tmatesoft.hg.core.HgStatus.Kind.*;
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20 import static org.tmatesoft.hg.repo.HgInternals.wrongLocalRevision;
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21 import static org.tmatesoft.hg.repo.HgRepository.*;
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23 import java.util.ConcurrentModificationException;
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24 import java.util.concurrent.CancellationException;
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26 import org.tmatesoft.hg.internal.ChangelogHelper;
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27 import org.tmatesoft.hg.repo.HgRepository;
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28 import org.tmatesoft.hg.repo.HgStatusCollector;
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29 import org.tmatesoft.hg.repo.HgStatusInspector;
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30 import org.tmatesoft.hg.repo.HgWorkingCopyStatusCollector;
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31 import org.tmatesoft.hg.util.Path;
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32 import org.tmatesoft.hg.util.Path.Matcher;
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33
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34 /**
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35 * Command to obtain file status information, 'hg status' counterpart.
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36 *
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37 * @author Artem Tikhomirov
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38 * @author TMate Software Ltd.
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39 */
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40 public class HgStatusCommand extends HgAbstractCommand<HgStatusCommand> {
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41 private final HgRepository repo;
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42
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43 private int startRevision = TIP;
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44 private int endRevision = WORKING_COPY;
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45
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46 private final Mediator mediator = new Mediator();
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47
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48 public HgStatusCommand(HgRepository hgRepo) {
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49 repo = hgRepo;
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50 defaults();
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51 }
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52
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53 public HgStatusCommand defaults() {
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54 final Mediator m = mediator;
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55 m.needModified = m.needAdded = m.needRemoved = m.needUnknown = m.needMissing = true;
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56 m.needCopies = m.needClean = m.needIgnored = false;
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57 return this;
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58 }
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59 public HgStatusCommand all() {
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60 final Mediator m = mediator;
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61 m.needModified = m.needAdded = m.needRemoved = m.needUnknown = m.needMissing = true;
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62 m.needCopies = m.needClean = m.needIgnored = true;
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63 return this;
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64 }
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67 public HgStatusCommand modified(boolean include) {
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68 mediator.needModified = include;
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69 return this;
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70 }
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71 public HgStatusCommand added(boolean include) {
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72 mediator.needAdded = include;
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73 return this;
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74 }
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75 public HgStatusCommand removed(boolean include) {
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76 mediator.needRemoved = include;
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77 return this;
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78 }
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79 public HgStatusCommand deleted(boolean include) {
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80 mediator.needMissing = include;
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81 return this;
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82 }
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83 public HgStatusCommand unknown(boolean include) {
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84 mediator.needUnknown = include;
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85 return this;
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86 }
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87 public HgStatusCommand clean(boolean include) {
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88 mediator.needClean = include;
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89 return this;
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90 }
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91 public HgStatusCommand ignored(boolean include) {
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92 mediator.needIgnored = include;
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93 return this;
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94 }
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96 /**
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97 * If set, either base:revision or base:workingdir
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98 * to unset, pass {@link HgRepository#TIP} or {@link HgRepository#BAD_REVISION}
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99 * @param revision - local revision number to base status from
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100 * @return <code>this</code> for convenience
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101 * @throws IllegalArgumentException when revision is negative or {@link HgRepository#WORKING_COPY}
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102 */
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103 public HgStatusCommand base(int revision) {
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104 if (revision == WORKING_COPY || wrongLocalRevision(revision)) {
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105 throw new IllegalArgumentException(String.valueOf(revision));
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106 }
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107 if (revision == BAD_REVISION) {
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108 revision = TIP;
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109 }
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110 startRevision = revision;
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111 return this;
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112 }
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114 /**
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115 * Revision without base == --change
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116 * Pass {@link HgRepository#WORKING_COPY} or {@link HgRepository#BAD_REVISION} to reset
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117 * @param revision - non-negative local revision number, or any of {@link HgRepository#BAD_REVISION}, {@link HgRepository#WORKING_COPY} or {@link HgRepository#TIP}
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118 * @return <code>this</code> for convenience
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119 * @throws IllegalArgumentException if local revision number doesn't specify legitimate revision.
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120 */
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121 public HgStatusCommand revision(int revision) {
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122 if (revision == BAD_REVISION) {
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123 revision = WORKING_COPY;
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124 }
148
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125 if (wrongLocalRevision(revision)) {
143
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126 throw new IllegalArgumentException(String.valueOf(revision));
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127 }
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128 endRevision = revision;
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129 return this;
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130 }
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131
143
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132 /**
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133 * Shorthand for {@link #base(int) cmd.base(BAD_REVISION)}{@link #change(int) .revision(revision)}
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134 *
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135 * @param revision compare given revision against its parent
148
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136 * @return <code>this</code> for convenience
143
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137 */
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138 public HgStatusCommand change(int revision) {
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139 base(BAD_REVISION);
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140 return revision(revision);
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141 }
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142
148
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143 /**
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144 * Limit status operation to certain sub-tree.
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145 *
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146 * @param pathMatcher - matcher to use, pass <code>null/<code> to reset
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147 * @return <code>this</code> for convenience
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148 */
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149 public HgStatusCommand match(Path.Matcher pathMatcher) {
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150 mediator.matcher = pathMatcher;
123
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151 return this;
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152 }
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153
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154 public HgStatusCommand subrepo(boolean visit) {
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155 throw HgRepository.notImplemented();
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156 }
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157
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158 /**
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159 * Perform status operation according to parameters set.
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160 *
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161 * @param handler callback to get status information
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162 * @throws IllegalArgumentException if handler is <code>null</code>
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163 * @throws ConcurrentModificationException if this command already runs (i.e. being used from another thread)
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164 */
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165 public void execute(Handler statusHandler) throws CancellationException, HgCallbackTargetException {
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166 if (statusHandler == null) {
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167 throw new IllegalArgumentException();
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168 }
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169 if (mediator.busy()) {
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170 throw new ConcurrentModificationException();
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171 }
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172 HgStatusCollector sc = new HgStatusCollector(repo); // TODO from CommandContext
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173 // PathPool pathHelper = new PathPool(repo.getPathHelper()); // TODO from CommandContext
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174 try {
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175 // XXX if I need a rough estimation (for ProgressMonitor) of number of work units,
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176 // I may use number of files in either rev1 or rev2 manifest edition
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177 mediator.start(statusHandler, new ChangelogHelper(repo, startRevision));
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178 if (endRevision == WORKING_COPY) {
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179 HgWorkingCopyStatusCollector wcsc = new HgWorkingCopyStatusCollector(repo);
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180 wcsc.setBaseRevisionCollector(sc);
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181 wcsc.walk(startRevision, mediator);
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182 } else {
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183 if (startRevision == TIP) {
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184 sc.change(endRevision, mediator);
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185 } else {
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186 sc.walk(startRevision, endRevision, mediator);
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187 }
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188 }
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189 } finally {
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190 mediator.done();
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191 }
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192 }
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193
109
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194 public interface Handler {
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195 void handleStatus(HgStatus s);
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196 }
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197
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198 private class Mediator implements HgStatusInspector {
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199 boolean needModified;
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200 boolean needAdded;
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201 boolean needRemoved;
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202 boolean needUnknown;
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203 boolean needMissing;
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204 boolean needClean;
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205 boolean needIgnored;
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206 boolean needCopies;
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207 Matcher matcher;
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208 Handler handler;
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209 private ChangelogHelper logHelper;
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210
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211 Mediator() {
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212 }
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213
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214 public void start(Handler h, ChangelogHelper changelogHelper) {
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215 handler = h;
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216 logHelper = changelogHelper;
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217 }
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218
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219 public void done() {
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220 handler = null;
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221 logHelper = null;
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222 }
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223
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224 public boolean busy() {
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225 return handler != null;
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226 }
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227
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228 public void modified(Path fname) {
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229 if (needModified) {
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230 if (matcher == null || matcher.accept(fname)) {
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231 handler.handleStatus(new HgStatus(Modified, fname, logHelper));
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232 }
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233 }
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234 }
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235 public void added(Path fname) {
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236 if (needAdded) {
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237 if (matcher == null || matcher.accept(fname)) {
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238 handler.handleStatus(new HgStatus(Added, fname, logHelper));
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239 }
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240 }
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241 }
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242 public void removed(Path fname) {
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243 if (needRemoved) {
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244 if (matcher == null || matcher.accept(fname)) {
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245 handler.handleStatus(new HgStatus(Removed, fname, logHelper));
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246 }
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247 }
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248 }
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249 public void copied(Path fnameOrigin, Path fnameAdded) {
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250 if (needCopies) {
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251 if (matcher == null || matcher.accept(fnameAdded)) {
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252 // FIXME in fact, merged files may report 'copied from' as well, correct status kind thus may differ from Added
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253 handler.handleStatus(new HgStatus(Added, fnameAdded, fnameOrigin, logHelper));
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254 }
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255 }
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256 }
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257 public void missing(Path fname) {
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258 if (needMissing) {
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259 if (matcher == null || matcher.accept(fname)) {
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260 handler.handleStatus(new HgStatus(Missing, fname, logHelper));
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261 }
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262 }
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263 }
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264 public void unknown(Path fname) {
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265 if (needUnknown) {
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266 if (matcher == null || matcher.accept(fname)) {
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267 handler.handleStatus(new HgStatus(Unknown, fname, logHelper));
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268 }
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269 }
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270 }
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271 public void clean(Path fname) {
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272 if (needClean) {
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273 if (matcher == null || matcher.accept(fname)) {
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274 handler.handleStatus(new HgStatus(Clean, fname, logHelper));
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275 }
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276 }
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277 }
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278 public void ignored(Path fname) {
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279 if (needIgnored) {
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280 if (matcher == null || matcher.accept(fname)) {
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281 handler.handleStatus(new HgStatus(Ignored, fname, logHelper));
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282 }
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283 }
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284 }
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285 }
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286 }