Mercurial > jhg

annotate src/org/tmatesoft/hg/core/HgManifestCommand.java @ 515:e6c8b9b654b2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Provide access to HgDataFile being iterated into HgChangesetTreeHandler.TreeElement to give context for renamed files
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 17 Dec 2012 20:51:12 +0100
parents 3ca4ae7bdd38
children 78a9e26e670d
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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18
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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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106 public HgManifestCommand dirs(boolean include) {
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107 // XXX whether directories with directories only are include or not
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108 // now lists only directories with files
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109 needDirs = include;
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110 return this;
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111 }
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113 /**
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114 * Limit manifest walk to a subset of files.
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115 * @param pathMatcher - filter, pass <code>null</code> to clear.
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116 * @return <code>this</code> instance for convenience
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117 */
131
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118 public HgManifestCommand match(Path.Matcher pathMatcher) {
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119 matcher = pathMatcher;
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120 return this;
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121 }
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122
148
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123 /**
427
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124 * With all parameters set, execute the command.
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125 *
148
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126 * @param handler - callback to get the outcome
427
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127 * @throws HgCallbackTargetException propagated exception from the handler
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128 * @throws HgException subclass thereof to indicate specific issue with the command arguments or repository state
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129 * @throws CancelledException if execution of the command was cancelled
148
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130 * @throws IllegalArgumentException if handler is <code>null</code>
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131 * @throws ConcurrentModificationException if this command is already in use (running)
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132 */
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133 public void execute(HgManifestHandler handler) throws HgCallbackTargetException, HgException, CancelledException {
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134 if (handler == null) {
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135 throw new IllegalArgumentException();
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136 }
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137 if (visitor != null) {
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138 throw new ConcurrentModificationException();
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139 }
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140 try {
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141 visitor = handler;
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142 mediator.start(getCancelSupport(handler, true));
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143 repo.getManifest().walk(startRev, endRev, mediator);
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144 mediator.checkFailure();
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145 } catch (HgRuntimeException ex) {
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146 throw new HgLibraryFailureException(ex);
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147 } finally {
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bf304cb14247 Just in case mediator does anything to visitor on done()
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148 mediator.done();
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149 visitor = null;
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150 }
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151 }
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152
132
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153 // I'd rather let HgManifestCommand implement HgManifest.Inspector directly, but this pollutes API alot
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154 private class Mediator implements HgManifest.Inspector {
142
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155 // file names are likely to repeat in each revision, hence caching of Paths.
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156 // However, once HgManifest.Inspector switches to Path objects, perhaps global Path pool
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157 // might be more effective?
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158 private PathPool pathPool;
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159 private List<HgFileRevision> manifestContent;
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160 private Nodeid manifestNodeid;
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161 private Exception failure;
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162 private CancelSupport cancelHelper;
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163
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164 public void start(CancelSupport cs) {
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165 assert cs != null;
142
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166 // Manifest keeps normalized paths
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167 pathPool = new PathPool(new PathRewrite.Empty());
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168 cancelHelper = cs;
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169 }
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170
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171 public void done() {
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172 manifestContent = null;
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173 pathPool = null;
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174 }
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175
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176 private void recordFailure(HgCallbackTargetException ex) {
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177 failure = ex;
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178 }
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179 private void recordCancel(CancelledException ex) {
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180 failure = ex;
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181 }
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182
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183 public void checkFailure() throws HgCallbackTargetException, CancelledException {
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184 // TODO post-1.0 perhaps, can combine this code (record/checkFailure) for reuse in more classes (e.g. in Revlog)
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185 if (failure instanceof HgCallbackTargetException) {
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186 HgCallbackTargetException ex = (HgCallbackTargetException) failure;
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187 failure = null;
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188 throw ex;
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189 }
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190 if (failure instanceof CancelledException) {
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191 CancelledException ex = (CancelledException) failure;
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192 failure = null;
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193 throw ex;
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194 }
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195 }
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196
222
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197 public boolean begin(int manifestRevision, Nodeid nid, int changelogRevision) {
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198 if (needDirs && manifestContent == null) {
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199 manifestContent = new LinkedList<HgFileRevision>();
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200 }
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201 try {
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202 visitor.begin(manifestNodeid = nid);
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203 cancelHelper.checkCancelled();
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204 return true;
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205 } catch (HgCallbackTargetException ex) {
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206 recordFailure(ex);
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207 return false;
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208 } catch (CancelledException ex) {
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209 recordCancel(ex);
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210 return false;
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211 }
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212 }
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213 public boolean end(int revision) {
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214 try {
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215 if (needDirs) {
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216 LinkedHashMap<Path, LinkedList<HgFileRevision>> breakDown = new LinkedHashMap<Path, LinkedList<HgFileRevision>>();
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217 for (HgFileRevision fr : manifestContent) {
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218 Path filePath = fr.getPath();
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219 Path dirPath = pathPool.parent(filePath);
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220 LinkedList<HgFileRevision> revs = breakDown.get(dirPath);
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221 if (revs == null) {
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222 revs = new LinkedList<HgFileRevision>();
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223 breakDown.put(dirPath, revs);
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224 }
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225 revs.addLast(fr);
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226 }
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227 for (Path dir : breakDown.keySet()) {
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228 visitor.dir(dir);
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229 cancelHelper.checkCancelled();
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230 for (HgFileRevision fr : breakDown.get(dir)) {
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231 visitor.file(fr);
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232 }
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233 }
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234 manifestContent.clear();
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235 }
427
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236 visitor.end(manifestNodeid);
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237 cancelHelper.checkCancelled();
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238 return true;
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239 } catch (HgCallbackTargetException ex) {
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240 recordFailure(ex);
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241 return false;
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242 } catch (CancelledException ex) {
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243 recordCancel(ex);
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244 return false;
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245 } finally {
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246 manifestNodeid = null;
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247 }
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248 }
285
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249
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250 public boolean next(Nodeid nid, Path fname, Flags flags) {
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251 if (matcher != null && !matcher.accept(fname)) {
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252 return true;
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253 }
427
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254 try {
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255 HgFileRevision fr = new HgFileRevision(repo, nid, flags, fname);
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256 if (needDirs) {
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257 manifestContent.add(fr);
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258 } else {
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259 visitor.file(fr);
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260 }
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261 return true;
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262 } catch (HgCallbackTargetException ex) {
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263 recordFailure(ex);
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264 return false;
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265 }
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266 }
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267 }
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268 }