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annotate src/org/tmatesoft/hg/core/HgStatusCommand.java @ 418:528b6780a8bd

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A bit of FIXME cleanup (mostly degraded to TODO post 1.0), comments and javadoc
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 22 Mar 2012 21:02:20 +0100
parents 8107b95f4280
children 7f136a3fa671
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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a3a2e5deb320 Updated contact address to support@hg4j.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.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.wrongRevisionIndex;
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21 import static org.tmatesoft.hg.repo.HgRepository.*;
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22
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23 import java.io.IOException;
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24 import java.util.ConcurrentModificationException;
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25 import java.util.concurrent.CancellationException;
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27 import org.tmatesoft.hg.internal.ChangelogHelper;
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28 import org.tmatesoft.hg.repo.HgRepository;
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29 import org.tmatesoft.hg.repo.HgStatusCollector;
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30 import org.tmatesoft.hg.repo.HgStatusInspector;
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31 import org.tmatesoft.hg.repo.HgWorkingCopyStatusCollector;
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32 import org.tmatesoft.hg.util.Path;
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33 import org.tmatesoft.hg.util.Status;
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35 /**
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36 * Command to obtain file status information, 'hg status' counterpart.
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37 *
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38 * @author Artem Tikhomirov
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39 * @author TMate Software Ltd.
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40 */
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41 public class HgStatusCommand extends HgAbstractCommand<HgStatusCommand> {
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42 private final HgRepository repo;
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43
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44 private int startRevision = TIP;
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45 private int endRevision = WORKING_COPY;
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46 private Path.Matcher scope;
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47
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48 private final Mediator mediator = new Mediator();
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49
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50 public HgStatusCommand(HgRepository hgRepo) {
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51 repo = hgRepo;
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52 defaults();
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53 }
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55 public HgStatusCommand defaults() {
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56 final Mediator m = mediator;
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57 m.needModified = m.needAdded = m.needRemoved = m.needUnknown = m.needMissing = true;
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58 m.needCopies = m.needClean = m.needIgnored = false;
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59 return this;
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60 }
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61 public HgStatusCommand all() {
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62 final Mediator m = mediator;
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63 m.needModified = m.needAdded = m.needRemoved = m.needUnknown = m.needMissing = true;
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64 m.needCopies = m.needClean = m.needIgnored = true;
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65 return this;
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66 }
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69 public HgStatusCommand modified(boolean include) {
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70 mediator.needModified = include;
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71 return this;
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72 }
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73 public HgStatusCommand added(boolean include) {
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74 mediator.needAdded = include;
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75 return this;
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76 }
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77 public HgStatusCommand removed(boolean include) {
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78 mediator.needRemoved = include;
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79 return this;
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80 }
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81 public HgStatusCommand deleted(boolean include) {
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82 mediator.needMissing = include;
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83 return this;
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84 }
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85 public HgStatusCommand unknown(boolean include) {
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86 mediator.needUnknown = include;
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87 return this;
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88 }
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89 public HgStatusCommand clean(boolean include) {
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90 mediator.needClean = include;
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91 return this;
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92 }
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93 public HgStatusCommand ignored(boolean include) {
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94 mediator.needIgnored = include;
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95 return this;
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96 }
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98 /**
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99 * If set, either base:revision or base:workingdir
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100 * to unset, pass {@link HgRepository#TIP} or {@link HgRepository#BAD_REVISION}
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101 * @param changesetRevisionIndex - local index of a changeset to base status from
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102 * @return <code>this</code> for convenience
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103 * @throws IllegalArgumentException when revision is negative or {@link HgRepository#WORKING_COPY}
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104 */
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105 public HgStatusCommand base(int changesetRevisionIndex) {
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106 if (changesetRevisionIndex == WORKING_COPY || wrongRevisionIndex(changesetRevisionIndex)) {
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107 throw new IllegalArgumentException(String.valueOf(changesetRevisionIndex));
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108 }
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109 if (changesetRevisionIndex == BAD_REVISION) {
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110 changesetRevisionIndex = TIP;
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111 }
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112 startRevision = changesetRevisionIndex;
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113 return this;
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114 }
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116 /**
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117 * Revision without base == --change
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118 * Pass {@link HgRepository#WORKING_COPY} or {@link HgRepository#BAD_REVISION} to reset
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119 * @param changesetRevisionIndex - non-negative changeset revision local index, or any of {@link HgRepository#BAD_REVISION}, {@link HgRepository#WORKING_COPY} or {@link HgRepository#TIP}
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120 * @return <code>this</code> for convenience
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121 * @throws IllegalArgumentException if revision index doesn't specify legitimate revision.
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122 */
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123 public HgStatusCommand revision(int changesetRevisionIndex) {
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124 if (changesetRevisionIndex == BAD_REVISION) {
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125 changesetRevisionIndex = WORKING_COPY;
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126 }
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127 if (wrongRevisionIndex(changesetRevisionIndex)) {
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128 throw new IllegalArgumentException(String.valueOf(changesetRevisionIndex));
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129 }
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130 endRevision = changesetRevisionIndex;
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131 return this;
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132 }
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133
143
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134 /**
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135 * Shorthand for {@link #base(int) cmd.base(BAD_REVISION)}{@link #change(int) .revision(revision)}
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136 *
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137 * @param revision compare given revision against its parent
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138 * @return <code>this</code> for convenience
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139 */
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140 public HgStatusCommand change(int revision) {
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141 base(BAD_REVISION);
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142 return revision(revision);
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143 }
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144
148
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145 /**
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146 * Limit status operation to certain sub-tree.
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147 *
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148 * @param pathMatcher - matcher to use, pass <code>null/<code> to reset
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149 * @return <code>this</code> for convenience
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150 */
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151 public HgStatusCommand match(Path.Matcher scopeMatcher) {
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152 scope = scopeMatcher;
123
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153 return this;
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154 }
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155
131
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156 public HgStatusCommand subrepo(boolean visit) {
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157 throw HgRepository.notImplemented();
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158 }
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159
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160 /**
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161 * Perform status operation according to parameters set.
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162 *
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163 * @param handler callback to get status information
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164 * @throws IOException if there are (further unspecified) errors while walking working copy
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165 * @throws IllegalArgumentException if handler is <code>null</code>
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166 * @throws ConcurrentModificationException if this command already runs (i.e. being used from another thread)
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167 */
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168 public void execute(HgStatusHandler statusHandler) throws CancellationException, HgException, IOException {
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169 if (statusHandler == null) {
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170 throw new IllegalArgumentException();
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171 }
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172 if (mediator.busy()) {
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173 throw new ConcurrentModificationException();
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174 }
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175 HgStatusCollector sc = new HgStatusCollector(repo); // TODO from CommandContext
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176 // PathPool pathHelper = new PathPool(repo.getPathHelper()); // TODO from CommandContext
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177 try {
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178 // XXX if I need a rough estimation (for ProgressMonitor) of number of work units,
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179 // I may use number of files in either rev1 or rev2 manifest edition
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180 mediator.start(statusHandler, new ChangelogHelper(repo, startRevision));
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181 if (endRevision == WORKING_COPY) {
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182 HgWorkingCopyStatusCollector wcsc = scope != null ? HgWorkingCopyStatusCollector.create(repo, scope) : new HgWorkingCopyStatusCollector(repo);
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183 wcsc.setBaseRevisionCollector(sc);
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184 wcsc.walk(startRevision, mediator);
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185 } else {
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186 sc.setScope(scope); // explicitly set, even if null - would be handy once we reuse StatusCollector
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187 if (startRevision == TIP) {
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188 sc.change(endRevision, mediator);
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189 } else {
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190 sc.walk(startRevision, endRevision, mediator);
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191 }
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192 }
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193 } catch (HgCallbackTargetException.Wrap ex) {
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194 // seems too general to catch RuntimeException, i.e.
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195 // unless catch is for very narrow piece of code, it's better not to catch any RTE (which may happen elsewhere, not only in handler)
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196 // XXX Perhaps, need more detailed explanation in handlers that are expected to throw Wrap/RTE (i.e. HgChangesetHandler)
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197 throw new HgCallbackTargetException(ex).setRevisionIndex(endRevision);
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198 } finally {
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199 mediator.done();
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200 }
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201 }
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202
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203 /**
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204 * @deprecated replaced with {@link HgStatusHandler}
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205 */
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206 @Deprecated
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207 public interface Handler extends HgStatusHandler{
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208 void handleStatus(HgStatus s);
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209 }
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210
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211 private class Mediator implements HgStatusInspector {
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212 boolean needModified;
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213 boolean needAdded;
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214 boolean needRemoved;
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215 boolean needUnknown;
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216 boolean needMissing;
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217 boolean needClean;
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218 boolean needIgnored;
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219 boolean needCopies;
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220 HgStatusHandler handler;
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221 private ChangelogHelper logHelper;
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222
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223 Mediator() {
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224 }
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225
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226 public void start(HgStatusHandler h, ChangelogHelper changelogHelper) {
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227 handler = h;
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228 logHelper = changelogHelper;
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229 }
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230
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231 public void done() {
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232 handler = null;
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233 logHelper = null;
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234 }
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235
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236 public boolean busy() {
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237 return handler != null;
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238 }
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239
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240 public void modified(Path fname) {
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241 if (needModified) {
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242 handler.handleStatus(new HgStatus(Modified, fname, logHelper));
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243 }
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244 }
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245 public void added(Path fname) {
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246 if (needAdded) {
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247 handler.handleStatus(new HgStatus(Added, fname, logHelper));
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248 }
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249 }
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250 public void removed(Path fname) {
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251 if (needRemoved) {
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252 handler.handleStatus(new HgStatus(Removed, fname, logHelper));
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253 }
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254 }
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255 public void copied(Path fnameOrigin, Path fnameAdded) {
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256 if (needCopies) {
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257 // TODO post-1.0 in fact, merged files may report 'copied from' as well, correct status kind thus may differ from Added
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258 handler.handleStatus(new HgStatus(Added, fnameAdded, fnameOrigin, logHelper));
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259 }
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260 }
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261 public void missing(Path fname) {
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262 if (needMissing) {
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263 handler.handleStatus(new HgStatus(Missing, fname, logHelper));
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264 }
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265 }
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266 public void unknown(Path fname) {
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267 if (needUnknown) {
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268 handler.handleStatus(new HgStatus(Unknown, fname, logHelper));
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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 handler.handleStatus(new HgStatus(Clean, fname, logHelper));
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274 }
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275 }
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276 public void ignored(Path fname) {
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277 if (needIgnored) {
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278 handler.handleStatus(new HgStatus(Ignored, fname, logHelper));
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279 }
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280 }
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281
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282 public void invalid(Path fname, Exception ex) {
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283 handler.handleError(fname, new Status(Status.Kind.ERROR, "Failed to get file status", ex));
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284 }
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285 }
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286 }