Mercurial > hg4j

annotate src/org/tmatesoft/hg/core/HgManifestCommand.java @ 461:613c883e360e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Do not walk into nested repositories at all, ignore not only .hg but whole nested repo
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 20 Jun 2012 16:51:18 +0200
parents d78cb5ca3053
children 3ca4ae7bdd38
rev   line source
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1 /*
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2 * Copyright (c) 2011-2012 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.core;
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19 import static org.tmatesoft.hg.repo.HgRepository.*;
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20 import static org.tmatesoft.hg.repo.HgRepository.BAD_REVISION;
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21 import static org.tmatesoft.hg.repo.HgRepository.TIP;
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23 import java.util.ConcurrentModificationException;
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24 import java.util.LinkedHashMap;
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25 import java.util.LinkedList;
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26 import java.util.List;
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27
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28 import org.tmatesoft.hg.internal.PathPool;
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29 import org.tmatesoft.hg.repo.HgInvalidRevisionException;
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30 import org.tmatesoft.hg.repo.HgManifest;
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31 import org.tmatesoft.hg.repo.HgRepository;
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32 import org.tmatesoft.hg.repo.HgManifest.Flags;
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33 import org.tmatesoft.hg.repo.HgRuntimeException;
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34 import org.tmatesoft.hg.util.CancelSupport;
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35 import org.tmatesoft.hg.util.CancelledException;
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36 import org.tmatesoft.hg.util.Path;
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37 import org.tmatesoft.hg.util.PathRewrite;
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40 /**
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41 * Gives access to list of files in each revision (Mercurial manifest information), 'hg manifest' counterpart.
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42 *
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43 * @author Artem Tikhomirov
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44 * @author TMate Software Ltd.
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45 */
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46 public class HgManifestCommand extends HgAbstractCommand<HgManifestCommand> {
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48 private final HgRepository repo;
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49 private Path.Matcher matcher;
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50 private int startRev = 0, endRev = TIP;
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51 private HgManifestHandler visitor;
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52 private boolean needDirs = false;
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54 private final Mediator mediator = new Mediator();
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56 public HgManifestCommand(HgRepository hgRepo) {
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57 repo = hgRepo;
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58 }
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60 /**
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61 * Parameterize command to visit revisions <code>[rev1..rev2]</code>.
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62 * @param rev1 - revision local index to start from. Non-negative. May be {@link HgRepository#TIP} (rev2 argument shall be {@link HgRepository#TIP} as well, then)
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63 * @param rev2 - revision local index to end with, inclusive. Non-negative, greater or equal to rev1. May be {@link HgRepository#TIP}.
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64 * @return <code>this</code> for convenience.
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65 * @throws IllegalArgumentException if revision arguments are incorrect (see above).
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66 */
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67 public HgManifestCommand range(int rev1, int rev2) {
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68 // XXX if manifest range is different from that of changelog, need conversion utils (external?)
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69 boolean badArgs = rev1 == BAD_REVISION || rev2 == BAD_REVISION || rev1 == WORKING_COPY || rev2 == WORKING_COPY;
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70 badArgs |= rev2 != TIP && rev2 < rev1; // range(3, 1);
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71 badArgs |= rev1 == TIP && rev2 != TIP; // range(TIP, 2), although this may be legitimate when TIP points to 2
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72 if (badArgs) {
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73 throw new IllegalArgumentException(String.format("Bad range: [%d, %d]", rev1, rev2));
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74 }
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75 startRev = rev1;
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76 endRev = rev2;
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77 return this;
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78 }
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80 /**
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81 * Select changeset for the command using revision index
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82 * @param csetRevisionIndex index of changeset revision
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83 * @return <code>this</code> for convenience.
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84 */
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85 public HgManifestCommand changeset(int csetRevisionIndex) {
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86 return range(csetRevisionIndex, csetRevisionIndex);
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87 }
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88
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89 /**
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90 * Select changeset for the command
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91 *
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92 * @param nid changeset revision
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93 * @return <code>this</code> for convenience
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94 * @throws HgBadArgumentException if failed to find supplied changeset revision
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95 */
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96 public HgManifestCommand changeset(Nodeid nid) throws HgBadArgumentException {
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97 // XXX also see HgLogCommand#changeset(Nodeid)
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98 try {
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99 final int csetRevIndex = repo.getChangelog().getRevisionIndex(nid);
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100 return range(csetRevIndex, csetRevIndex);
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101 } catch (HgInvalidRevisionException ex) {
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102 throw new HgBadArgumentException("Can't find revision", ex).setRevision(nid);
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103 }
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104 }
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105
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106 /**
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107 * @deprecated confusing whether it's changeset or manifest own revision index in use, use {@link #changeset(int)} instead
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108 */
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109 @Deprecated
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110 public HgManifestCommand revision(int rev) {
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111 return changeset(rev);
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112 }
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113
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114 public HgManifestCommand dirs(boolean include) {
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115 // XXX whether directories with directories only are include or not
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116 // now lists only directories with files
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117 needDirs = include;
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118 return this;
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119 }
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120
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121 /**
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122 * Limit manifest walk to a subset of files.
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123 * @param pathMatcher - filter, pass <code>null</code> to clear.
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124 * @return <code>this</code> instance for convenience
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125 */
131
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126 public HgManifestCommand match(Path.Matcher pathMatcher) {
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127 matcher = pathMatcher;
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128 return this;
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129 }
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130
148
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131 /**
427
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132 * With all parameters set, execute the command.
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133 *
148
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134 * @param handler - callback to get the outcome
427
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135 * @throws HgCallbackTargetException propagated exception from the handler
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136 * @throws HgException subclass thereof to indicate specific issue with the command arguments or repository state
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137 * @throws CancelledException if execution of the command was cancelled
148
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138 * @throws IllegalArgumentException if handler is <code>null</code>
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139 * @throws ConcurrentModificationException if this command is already in use (running)
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140 */
427
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141 public void execute(HgManifestHandler handler) throws HgCallbackTargetException, HgException, CancelledException {
64
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142 if (handler == null) {
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143 throw new IllegalArgumentException();
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144 }
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145 if (visitor != null) {
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146 throw new ConcurrentModificationException();
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147 }
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148 try {
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149 visitor = handler;
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150 mediator.start(getCancelSupport(handler, true));
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151 repo.getManifest().walk(startRev, endRev, mediator);
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152 mediator.checkFailure();
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153 } catch (HgRuntimeException ex) {
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154 throw new HgLibraryFailureException(ex);
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155 } finally {
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bf304cb14247 Just in case mediator does anything to visitor on done()
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156 mediator.done();
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157 visitor = null;
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158 }
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159 }
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160
132
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161 // I'd rather let HgManifestCommand implement HgManifest.Inspector directly, but this pollutes API alot
424
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162 private class Mediator implements HgManifest.Inspector {
142
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163 // file names are likely to repeat in each revision, hence caching of Paths.
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164 // However, once HgManifest.Inspector switches to Path objects, perhaps global Path pool
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165 // might be more effective?
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166 private PathPool pathPool;
231
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167 private List<HgFileRevision> manifestContent;
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168 private Nodeid manifestNodeid;
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169 private Exception failure;
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170 private CancelSupport cancelHelper;
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171
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172 public void start(CancelSupport cs) {
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173 assert cs != null;
142
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174 // Manifest keeps normalized paths
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175 pathPool = new PathPool(new PathRewrite.Empty());
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176 cancelHelper = cs;
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177 }
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178
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179 public void done() {
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180 manifestContent = null;
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181 pathPool = null;
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182 }
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183
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184 private void recordFailure(HgCallbackTargetException ex) {
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185 failure = ex;
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186 }
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187 private void recordCancel(CancelledException ex) {
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188 failure = ex;
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189 }
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190
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191 public void checkFailure() throws HgCallbackTargetException, CancelledException {
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192 // TODO post-1.0 perhaps, can combine this code (record/checkFailure) for reuse in more classes (e.g. in Revlog)
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193 if (failure instanceof HgCallbackTargetException) {
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194 HgCallbackTargetException ex = (HgCallbackTargetException) failure;
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195 failure = null;
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196 throw ex;
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197 }
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198 if (failure instanceof CancelledException) {
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199 CancelledException ex = (CancelledException) failure;
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200 failure = null;
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201 throw ex;
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202 }
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203 }
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204
222
373e07cd3991 Due to discrepancy in manifest and changelor indexes, wrong manifest revisions got cached and compared
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205 public boolean begin(int manifestRevision, Nodeid nid, int changelogRevision) {
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206 if (needDirs && manifestContent == null) {
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207 manifestContent = new LinkedList<HgFileRevision>();
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208 }
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209 try {
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210 visitor.begin(manifestNodeid = nid);
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211 cancelHelper.checkCancelled();
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212 return true;
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213 } catch (HgCallbackTargetException ex) {
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214 recordFailure(ex);
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215 return false;
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216 } catch (CancelledException ex) {
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217 recordCancel(ex);
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218 return false;
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219 }
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220 }
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221 public boolean end(int revision) {
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222 try {
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223 if (needDirs) {
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224 LinkedHashMap<Path, LinkedList<HgFileRevision>> breakDown = new LinkedHashMap<Path, LinkedList<HgFileRevision>>();
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225 for (HgFileRevision fr : manifestContent) {
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226 Path filePath = fr.getPath();
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227 Path dirPath = pathPool.parent(filePath);
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228 LinkedList<HgFileRevision> revs = breakDown.get(dirPath);
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229 if (revs == null) {
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230 revs = new LinkedList<HgFileRevision>();
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231 breakDown.put(dirPath, revs);
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232 }
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233 revs.addLast(fr);
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234 }
427
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235 for (Path dir : breakDown.keySet()) {
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236 visitor.dir(dir);
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237 cancelHelper.checkCancelled();
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238 for (HgFileRevision fr : breakDown.get(dir)) {
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239 visitor.file(fr);
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240 }
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241 }
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242 manifestContent.clear();
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243 }
427
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244 visitor.end(manifestNodeid);
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245 cancelHelper.checkCancelled();
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246 return true;
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247 } catch (HgCallbackTargetException ex) {
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248 recordFailure(ex);
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249 return false;
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250 } catch (CancelledException ex) {
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251 recordCancel(ex);
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252 return false;
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253 } finally {
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254 manifestNodeid = null;
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255 }
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256 }
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257
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258 public boolean next(Nodeid nid, Path fname, Flags flags) {
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259 if (matcher != null && !matcher.accept(fname)) {
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260 return true;
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261 }
427
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262 try {
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263 HgFileRevision fr = new HgFileRevision(repo, nid, flags, fname);
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264 if (needDirs) {
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265 manifestContent.add(fr);
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266 } else {
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267 visitor.file(fr);
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268 }
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269 return true;
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270 } catch (HgCallbackTargetException ex) {
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271 recordFailure(ex);
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272 return false;
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273 }
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274 }
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275 }
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276 }