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annotate src/org/tmatesoft/hg/repo/HgWorkingCopyStatusCollector.java @ 318:c3d2233ba842

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Shall propagate errors to clients, not work around them silently
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 29 Sep 2011 03:35:59 +0200
parents fb74133d2025
children 4c7e3ba67213
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.repo;
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18
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19 import static java.lang.Math.max;
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20 import static java.lang.Math.min;
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21 import static org.tmatesoft.hg.repo.HgRepository.*;
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23 import java.io.File;
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24 import java.io.IOException;
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25 import java.nio.ByteBuffer;
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26 import java.nio.channels.ReadableByteChannel;
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27 import java.util.ArrayList;
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28 import java.util.Collections;
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29 import java.util.NoSuchElementException;
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30 import java.util.Set;
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31 import java.util.TreeSet;
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32
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33 import org.tmatesoft.hg.core.HgDataStreamException;
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34 import org.tmatesoft.hg.core.HgException;
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35 import org.tmatesoft.hg.core.Nodeid;
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36 import org.tmatesoft.hg.internal.ByteArrayChannel;
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37 import org.tmatesoft.hg.internal.Experimental;
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38 import org.tmatesoft.hg.internal.FilterByteChannel;
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39 import org.tmatesoft.hg.internal.ManifestRevision;
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40 import org.tmatesoft.hg.internal.PathScope;
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41 import org.tmatesoft.hg.util.ByteChannel;
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42 import org.tmatesoft.hg.util.CancelledException;
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43 import org.tmatesoft.hg.util.FileInfo;
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44 import org.tmatesoft.hg.util.FileIterator;
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45 import org.tmatesoft.hg.util.FileWalker;
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46 import org.tmatesoft.hg.util.Path;
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47 import org.tmatesoft.hg.util.PathPool;
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48 import org.tmatesoft.hg.util.PathRewrite;
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49 import org.tmatesoft.hg.util.RegularFileInfo;
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51 /**
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52 *
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53 * @author Artem Tikhomirov
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54 * @author TMate Software Ltd.
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55 */
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56 public class HgWorkingCopyStatusCollector {
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58 private final HgRepository repo;
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59 private final FileIterator repoWalker;
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60 private HgDirstate dirstate;
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61 private HgStatusCollector baseRevisionCollector;
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62 private PathPool pathPool;
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63 private ManifestRevision dirstateParentManifest;
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65 public HgWorkingCopyStatusCollector(HgRepository hgRepo) {
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66 this(hgRepo, new HgInternals(hgRepo).createWorkingDirWalker(null));
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67 }
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68
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69 // FIXME document cons
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70 public HgWorkingCopyStatusCollector(HgRepository hgRepo, FileIterator hgRepoWalker) {
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71 repo = hgRepo;
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72 repoWalker = hgRepoWalker;
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73 }
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75 /**
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76 * Optionally, supply a collector instance that may cache (or have already cached) base revision
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77 * @param sc may be null
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78 */
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79 public void setBaseRevisionCollector(HgStatusCollector sc) {
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80 baseRevisionCollector = sc;
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81 }
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83 /*package-local*/ PathPool getPathPool() {
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84 if (pathPool == null) {
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85 if (baseRevisionCollector == null) {
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86 pathPool = new PathPool(new PathRewrite.Empty());
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87 } else {
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88 return baseRevisionCollector.getPathPool();
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89 }
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90 }
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91 return pathPool;
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92 }
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94 public void setPathPool(PathPool pathPool) {
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95 this.pathPool = pathPool;
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96 }
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97
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98 /**
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99 * Access to directory state information this collector uses.
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100 * @return directory state holder, never <code>null</code>
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101 */
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102 public HgDirstate getDirstate() {
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103 if (dirstate == null) {
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104 dirstate = repo.loadDirstate(getPathPool());
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105 }
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106 return dirstate;
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107 }
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108
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109 private ManifestRevision getManifest(int changelogLocalRev) {
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110 assert changelogLocalRev >= 0;
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111 ManifestRevision mr;
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112 if (baseRevisionCollector != null) {
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113 mr = baseRevisionCollector.raw(changelogLocalRev);
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114 } else {
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115 mr = new ManifestRevision(null, null);
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116 repo.getManifest().walk(changelogLocalRev, changelogLocalRev, mr);
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117 }
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118 return mr;
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119 }
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120
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121 private ManifestRevision getDirstateParentManifest() {
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122 // WC not necessarily points to TIP, but may be result of update to any previous revision.
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123 // In such case, we need to compare local files not to their TIP content, but to specific version at the time of selected revision
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124 if (dirstateParentManifest == null) {
284
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125 Nodeid dirstateParent = getDirstate().parents().first();
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126 if (dirstateParent.isNull()) {
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127 dirstateParentManifest = baseRevisionCollector != null ? baseRevisionCollector.raw(-1) : HgStatusCollector.createEmptyManifestRevision();
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128 } else {
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129 int changelogLocalRev = repo.getChangelog().getLocalRevision(dirstateParent);
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130 dirstateParentManifest = getManifest(changelogLocalRev);
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131 }
282
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132 }
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133 return dirstateParentManifest;
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134 }
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135
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136 // may be invoked few times, TIP or WORKING_COPY indicate comparison shall be run against working copy parent
275
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137 // NOTE, use of TIP constant requires certain care. TIP here doesn't mean latest cset, but actual working copy parent.
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138 public void walk(int baseRevision, HgStatusInspector inspector) {
282
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139 if (HgInternals.wrongLocalRevision(baseRevision) || baseRevision == BAD_REVISION) {
218
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140 throw new IllegalArgumentException(String.valueOf(baseRevision));
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141 }
282
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142 ManifestRevision collect = null; // non null indicates we compare against base revision
285
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143 Set<Path> baseRevFiles = Collections.emptySet(); // files from base revision not affected by status calculation
282
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144 if (baseRevision != TIP && baseRevision != WORKING_COPY) {
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145 collect = getManifest(baseRevision);
285
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146 baseRevFiles = new TreeSet<Path>(collect.files());
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147 }
94
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148 if (inspector instanceof HgStatusCollector.Record) {
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149 HgStatusCollector sc = baseRevisionCollector == null ? new HgStatusCollector(repo) : baseRevisionCollector;
282
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150 // nodeidAfterChange(dirstate's parent) doesn't make too much sense,
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151 // because the change might be actually in working copy. Nevertheless,
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152 // as long as no nodeids can be provided for WC, seems reasonable to report
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153 // latest known nodeid change (although at the moment this is not used and
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154 // is done mostly not to leave stale initialization in the Record)
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155 int rev1,rev2 = getDirstateParentManifest().changesetLocalRev();
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156 if (baseRevision == TIP || baseRevision == WORKING_COPY) {
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157 rev1 = rev2 - 1; // just use revision prior to dirstate's parent
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158 } else {
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159 rev1 = baseRevision;
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160 }
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161 ((HgStatusCollector.Record) inspector).init(rev1, rev2, sc);
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162 }
282
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163 final HgIgnore hgIgnore = repo.getIgnore();
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164 repoWalker.reset();
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165 TreeSet<Path> processed = new TreeSet<Path>(); // names of files we handled as they known to Dirstate (not FileIterator)
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166 final HgDirstate ds = getDirstate();
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167 TreeSet<Path> knownEntries = ds.all(); // here just to get dirstate initialized
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168 while (repoWalker.hasNext()) {
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169 repoWalker.next();
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170 final Path fname = getPathPool().path(repoWalker.name());
287
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171 FileInfo f = repoWalker.file();
293
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172 Path knownInDirstate;
226
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173 if (!f.exists()) {
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174 // file coming from iterator doesn't exist.
293
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175 if ((knownInDirstate = ds.known(fname)) != null) {
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176 // found in dirstate
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177 processed.add(knownInDirstate);
294
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178 if (ds.checkRemoved(knownInDirstate) == null) {
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179 inspector.missing(knownInDirstate);
226
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180 } else {
294
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181 inspector.removed(knownInDirstate);
226
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182 }
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183 // do not report it as removed later
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184 if (collect != null) {
294
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185 baseRevFiles.remove(knownInDirstate);
226
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186 }
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187 } else {
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188 // chances are it was known in baseRevision. We may rely
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189 // that later iteration over baseRevFiles leftovers would yield correct Removed,
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190 // but it doesn't hurt to be explicit (provided we know fname *is* inScope of the FileIterator
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191 if (collect != null && baseRevFiles.remove(fname)) {
226
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192 inspector.removed(fname);
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193 } else {
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194 // not sure I shall report such files (i.e. arbitrary name coming from FileIterator)
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195 // as unknown. Command-line HG aborts "system can't find the file specified"
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196 // in similar case (against wc), or just gives nothing if --change <rev> is specified.
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197 // however, as it's unlikely to get unexisting files from FileIterator, and
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198 // its better to see erroneous file status rather than not to see any (which is too easy
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199 // to overlook), I think unknown() is reasonable approach here
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200 inspector.unknown(fname);
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201 }
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202 }
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203 continue;
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204 }
293
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205 if ((knownInDirstate = ds.known(fname)) != null) {
226
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206 // tracked file.
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207 // modified, added, removed, clean
293
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208 processed.add(knownInDirstate);
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209 if (collect != null) { // need to check against base revision, not FS file
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210 checkLocalStatusAgainstBaseRevision(baseRevFiles, collect, baseRevision, knownInDirstate, f, inspector);
58
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211 } else {
294
32890bab7209 Issue 13: Report filenames as they are known in repository rather than from file system
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diff changeset
212 checkLocalStatusAgainstFile(knownInDirstate, f, inspector);
58
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213 }
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diff changeset
214 } else {
226
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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parents: 219
diff changeset
215 if (hgIgnore.isIgnored(fname)) { // hgignore shall be consulted only for non-tracked files
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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216 inspector.ignored(fname);
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parents: 219
diff changeset
217 } else {
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parents: 219
diff changeset
218 inspector.unknown(fname);
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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parents: 219
diff changeset
219 }
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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parents: 219
diff changeset
220 // the file is not tracked. Even if it's known at baseRevision, we don't need to remove it
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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parents: 219
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221 // from baseRevFiles, it might need to be reported as removed as well (cmdline client does
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diff changeset
222 // yield two statuses for the same file)
58
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223 }
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224 }
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225 if (collect != null) {
285
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226 for (Path fromBase : baseRevFiles) {
226
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diff changeset
227 if (repoWalker.inScope(fromBase)) {
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diff changeset
228 inspector.removed(fromBase);
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diff changeset
229 }
58
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230 }
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231 }
293
9774f47d904d Issue 13: Status reports filenames with case other than in dirstate incorrectly
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diff changeset
232 knownEntries.removeAll(processed);
284
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233 for (Path m : knownEntries) {
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234 if (!repoWalker.inScope(m)) {
226
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235 // do not report as missing/removed those FileIterator doesn't care about.
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diff changeset
236 continue;
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diff changeset
237 }
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6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
238 // missing known file from a working dir
293
9774f47d904d Issue 13: Status reports filenames with case other than in dirstate incorrectly
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parents: 290
diff changeset
239 if (ds.checkRemoved(m) == null) {
74
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
240 // not removed from the repository = 'deleted'
284
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diff changeset
241 inspector.missing(m);
74
6f1b88693d48 Complete refactoring to org.tmatesoft
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parents: 68
diff changeset
242 } else {
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
243 // removed from the repo
76
658fa6b3a371 Fixed a defect when a file added and removed past some revision was reported as R for status against that rev
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diff changeset
244 // if we check against non-tip revision, do not report files that were added past that revision and now removed.
285
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245 if (collect == null || baseRevFiles.contains(m)) {
284
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diff changeset
246 inspector.removed(m);
76
658fa6b3a371 Fixed a defect when a file added and removed past some revision was reported as R for status against that rev
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247 }
58
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248 }
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249 }
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250 }
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251
94
af1f3b78b918 *StatusCollector renamed to Hg*StatusCollector
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diff changeset
252 public HgStatusCollector.Record status(int baseRevision) {
af1f3b78b918 *StatusCollector renamed to Hg*StatusCollector
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diff changeset
253 HgStatusCollector.Record rv = new HgStatusCollector.Record();
58
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254 walk(baseRevision, rv);
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255 return rv;
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256 }
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parents:
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257
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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258 //********************************************
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259
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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260
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
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diff changeset
261 private void checkLocalStatusAgainstFile(Path fname, FileInfo f, HgStatusInspector inspector) {
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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262 HgDirstate.Record r;
59
b771e94a4f7c Introduce Internals to keep LocalHgRepo casts and alike in a single place. WCSC optionally to reuse SC data
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diff changeset
263 if ((r = getDirstate().checkNormal(fname)) != null) {
58
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264 // either clean or modified
290
8faad08c709b Expose dirstate to allow pre-configuration of FileIterators for status collection in particular
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diff changeset
265 final boolean timestampEqual = f.lastModified() == r.modificationTime(), sizeEqual = r.size() == f.length();
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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parents: 275
diff changeset
266 if (timestampEqual && sizeEqual) {
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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parents: 275
diff changeset
267 inspector.clean(fname);
290
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parents: 287
diff changeset
268 } else if (!sizeEqual && r.size() >= 0) {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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parents: 275
diff changeset
269 inspector.modified(fname);
58
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diff changeset
270 } else {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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parents: 275
diff changeset
271 // size is the same or unknown, and, perhaps, different timestamp
120
b19f0ac5ee62 Check against working copy shall expect non-persistent modifications done by filters and not report such files as modified
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parents: 117
diff changeset
272 // check actual content to avoid false modified files
b19f0ac5ee62 Check against working copy shall expect non-persistent modifications done by filters and not report such files as modified
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parents: 117
diff changeset
273 HgDataFile df = repo.getFileNode(fname);
285
6dbbc53fc46d Use Path instead of plain String for manifest file names
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parents: 284
diff changeset
274 Nodeid rev = getDirstateParentManifest().nodeid(fname);
314
fb74133d2025 Issue 14: NPE for merged dirstate and a file missed in dirstate's first parent
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parents: 295
diff changeset
275 // rev might be null here if fname comes to dirstate as a result of a merge operation
fb74133d2025 Issue 14: NPE for merged dirstate and a file missed in dirstate's first parent
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parents: 295
diff changeset
276 // where one of the parents (first parent) had no fname file, but second parent had.
fb74133d2025 Issue 14: NPE for merged dirstate and a file missed in dirstate's first parent
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parents: 295
diff changeset
277 // E.g. fork revision 3, revision 4 gets .hgtags, few modifications and merge(3,12)
fb74133d2025 Issue 14: NPE for merged dirstate and a file missed in dirstate's first parent
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parents: 295
diff changeset
278 // see Issue 14 for details
fb74133d2025 Issue 14: NPE for merged dirstate and a file missed in dirstate's first parent
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parents: 295
diff changeset
279 if (rev == null || !areTheSame(f, df, rev)) {
120
b19f0ac5ee62 Check against working copy shall expect non-persistent modifications done by filters and not report such files as modified
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parents: 117
diff changeset
280 inspector.modified(df.getPath());
180
42fe9a94b9d0 Report files as clean when no difference but timestamp found
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
281 } else {
42fe9a94b9d0 Report files as clean when no difference but timestamp found
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parents: 157
diff changeset
282 inspector.clean(df.getPath());
120
b19f0ac5ee62 Check against working copy shall expect non-persistent modifications done by filters and not report such files as modified
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parents: 117
diff changeset
283 }
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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diff changeset
284 }
59
b771e94a4f7c Introduce Internals to keep LocalHgRepo casts and alike in a single place. WCSC optionally to reuse SC data
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parents: 58
diff changeset
285 } else if ((r = getDirstate().checkAdded(fname)) != null) {
290
8faad08c709b Expose dirstate to allow pre-configuration of FileIterators for status collection in particular
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parents: 287
diff changeset
286 if (r.copySource() == null) {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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parents: 275
diff changeset
287 inspector.added(fname);
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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diff changeset
288 } else {
290
8faad08c709b Expose dirstate to allow pre-configuration of FileIterators for status collection in particular
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parents: 287
diff changeset
289 inspector.copied(r.copySource(), fname);
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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diff changeset
290 }
59
b771e94a4f7c Introduce Internals to keep LocalHgRepo casts and alike in a single place. WCSC optionally to reuse SC data
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parents: 58
diff changeset
291 } else if ((r = getDirstate().checkRemoved(fname)) != null) {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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parents: 275
diff changeset
292 inspector.removed(fname);
59
b771e94a4f7c Introduce Internals to keep LocalHgRepo casts and alike in a single place. WCSC optionally to reuse SC data
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parents: 58
diff changeset
293 } else if ((r = getDirstate().checkMerged(fname)) != null) {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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parents: 275
diff changeset
294 inspector.modified(fname);
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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diff changeset
295 }
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
296 }
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
297
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
298 // XXX refactor checkLocalStatus methods in more OO way
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
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parents: 285
diff changeset
299 private void checkLocalStatusAgainstBaseRevision(Set<Path> baseRevNames, ManifestRevision collect, int baseRevision, Path fname, FileInfo f, HgStatusInspector inspector) {
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
300 // fname is in the dirstate, either Normal, Added, Removed or Merged
285
6dbbc53fc46d Use Path instead of plain String for manifest file names
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parents: 284
diff changeset
301 Nodeid nid1 = collect.nodeid(fname);
6dbbc53fc46d Use Path instead of plain String for manifest file names
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parents: 284
diff changeset
302 HgManifest.Flags flags = collect.flags(fname);
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
303 HgDirstate.Record r;
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parents:
diff changeset
304 if (nid1 == null) {
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parents:
diff changeset
305 // normal: added?
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
306 // added: not known at the time of baseRevision, shall report
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
307 // merged: was not known, report as added?
90
a95c700408a9 Correctly report copy/rename events for rev..working copy case
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 89
diff changeset
308 if ((r = getDirstate().checkNormal(fname)) != null) {
157
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
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parents: 148
diff changeset
309 try {
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
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parents: 148
diff changeset
310 Path origin = HgStatusCollector.getOriginIfCopy(repo, fname, baseRevNames, baseRevision);
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
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parents: 148
diff changeset
311 if (origin != null) {
226
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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parents: 219
diff changeset
312 inspector.copied(getPathPool().path(origin), fname);
157
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
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parents: 148
diff changeset
313 return;
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
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parents: 148
diff changeset
314 }
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
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parents: 148
diff changeset
315 } catch (HgDataStreamException ex) {
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
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diff changeset
316 ex.printStackTrace();
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
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parents: 148
diff changeset
317 // FIXME report to a mediator, continue status collection
90
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318 }
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319 } else if ((r = getDirstate().checkAdded(fname)) != null) {
290
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320 if (r.copySource() != null && baseRevNames.contains(r.copySource())) {
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321 baseRevNames.remove(r.copySource()); // XXX surely I shall not report rename source as Removed?
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322 inspector.copied(r.copySource(), fname);
58
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323 return;
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324 }
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325 // fall-through, report as added
59
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326 } else if (getDirstate().checkRemoved(fname) != null) {
58
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327 // removed: removed file was not known at the time of baseRevision, and we should not report it as removed
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328 return;
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329 }
226
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330 inspector.added(fname);
58
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331 } else {
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332 // was known; check whether clean or modified
285
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333 Nodeid nidFromDirstate = getDirstateParentManifest().nodeid(fname);
282
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334 if ((r = getDirstate().checkNormal(fname)) != null && nid1.equals(nidFromDirstate)) {
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335 // regular file, was the same up to WC initialization. Check if was modified since, and, if not, report right away
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336 // same code as in #checkLocalStatusAgainstFile
290
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337 final boolean timestampEqual = f.lastModified() == r.modificationTime(), sizeEqual = r.size() == f.length();
282
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338 boolean handled = false;
280
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339 if (timestampEqual && sizeEqual) {
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340 inspector.clean(fname);
282
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341 handled = true;
290
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342 } else if (!sizeEqual && r.size() >= 0) {
280
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343 inspector.modified(fname);
282
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344 handled = true;
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345 } else if (!todoCheckFlagsEqual(f, flags)) {
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346 // seems like flags have changed, no reason to check content further
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347 inspector.modified(fname);
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348 handled = true;
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349 }
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350 if (handled) {
285
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351 baseRevNames.remove(fname); // consumed, processed, handled.
280
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352 return;
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353 }
282
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354 // otherwise, shall check actual content (size not the same, or unknown (-1 or -2), or timestamp is different,
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355 // or nodeid in dirstate is different, but local change might have brought it back to baseRevision state)
280
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356 // FALL THROUGH
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357 }
282
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358 if (r != null || (r = getDirstate().checkMerged(fname)) != null || (r = getDirstate().checkAdded(fname)) != null) {
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359 // check actual content to see actual changes
280
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360 // when added - seems to be the case of a file added once again, hence need to check if content is different
58
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361 // either clean or modified
282
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362 HgDataFile fileNode = repo.getFileNode(fname);
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363 if (areTheSame(f, fileNode, nid1)) {
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364 inspector.clean(fname);
58
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365 } else {
282
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366 inspector.modified(fname);
58
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367 }
285
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368 baseRevNames.remove(fname); // consumed, processed, handled.
226
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369 } else if (getDirstate().checkRemoved(fname) != null) {
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370 // was known, and now marked as removed, report it right away, do not rely on baseRevNames processing later
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371 inspector.removed(fname);
285
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372 baseRevNames.remove(fname); // consumed, processed, handled.
58
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373 }
226
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374 // only those left in baseRevNames after processing are reported as removed
58
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375 }
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376
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377 // TODO think over if content comparison may be done more effectively by e.g. calculating nodeid for a local file and comparing it with nodeid from manifest
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378 // we don't need to tell exact difference, hash should be enough to detect difference, and it doesn't involve reading historical file content, and it's relatively
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379 // cheap to calc hash on a file (no need to keep it completely in memory). OTOH, if I'm right that the next approach is used for nodeids:
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380 // changeset nodeid + hash(actual content) => entry (Nodeid) in the next Manifest
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381 // then it's sufficient to check parents from dirstate, and if they do not match parents from file's baseRevision (non matching parents means different nodeids).
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382 // The question is whether original Hg treats this case (same content, different parents and hence nodeids) as 'modified' or 'clean'
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383 }
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384
287
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diff changeset
385 private boolean areTheSame(FileInfo f, HgDataFile dataFile, Nodeid revision) {
157
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386 // XXX consider adding HgDataDile.compare(File/byte[]/whatever) operation to optimize comparison
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387 ByteArrayChannel bac = new ByteArrayChannel();
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388 boolean ioFailed = false;
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diff changeset
389 try {
282
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390 int localRevision = dataFile.getLocalRevision(revision);
157
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391 // need content with metadata striped off - although theoretically chances are metadata may be different,
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392 // WC doesn't have it anyway
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diff changeset
393 dataFile.content(localRevision, bac);
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diff changeset
394 } catch (CancelledException ex) {
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395 // silently ignore - can't happen, ByteArrayChannel is not cancellable
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diff changeset
396 } catch (HgException ex) {
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
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397 ioFailed = true;
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398 }
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399 return !ioFailed && areTheSame(f, bac.toArray(), dataFile.getPath());
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400 }
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401
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diff changeset
402 private boolean areTheSame(FileInfo f, final byte[] data, Path p) {
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diff changeset
403 ReadableByteChannel is = null;
295
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404 class Check implements ByteChannel {
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diff changeset
405 final boolean debug = repo.getContext().getLog().isDebug();
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diff changeset
406 boolean sameSoFar = true;
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diff changeset
407 int x = 0;
219
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408
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409 public int write(ByteBuffer buffer) {
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diff changeset
410 for (int i = buffer.remaining(); i > 0; i--, x++) {
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diff changeset
411 if (x >= data.length /*file has been appended*/ || data[x] != buffer.get()) {
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diff changeset
412 if (debug) {
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diff changeset
413 byte[] xx = new byte[15];
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diff changeset
414 if (buffer.position() > 5) {
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diff changeset
415 buffer.position(buffer.position() - 5);
117
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416 }
295
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417 buffer.get(xx, 0, min(xx.length, i));
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418 repo.getContext().getLog().debug(getClass(), "expected >>%s<< but got >>%s<<", new String(data, max(0, x - 4), min(data.length - x, 20)), new String(xx));
117
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419 }
295
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420 sameSoFar = false;
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421 break;
219
d63583b47bfa ArrayIndexOutOfBoundsException when file appended. Erroneous 'areTheSame' when trailing were deleted.
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422 }
117
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423 }
295
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424 buffer.position(buffer.limit()); // mark as read
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425 return buffer.limit();
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426 }
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427
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428 public boolean sameSoFar() {
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429 return sameSoFar;
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430 }
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431 public boolean ultimatelyTheSame() {
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432 return sameSoFar && x == data.length;
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433 }
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434 };
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435 Check check = new Check();
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436 try {
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437 is = f.newInputChannel();
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438 ByteBuffer fb = ByteBuffer.allocate(min(1 + data.length * 2 /*to fit couple of lines appended; never zero*/, 8192));
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439 FilterByteChannel filters = new FilterByteChannel(check, repo.getFiltersFromWorkingDirToRepo(p));
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440 while (is.read(fb) != -1 && check.sameSoFar()) {
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441 fb.flip();
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442 filters.write(fb);
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443 fb.compact();
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444 }
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445 return check.ultimatelyTheSame();
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446 } catch (CancelledException ex) {
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447 repo.getContext().getLog().warn(getClass(), ex, "Unexpected cancellation");
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448 return check.ultimatelyTheSame();
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449 } catch (IOException ex) {
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450 repo.getContext().getLog().warn(getClass(), ex, null);
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451 } finally {
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452 if (is != null) {
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453 try {
287
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454 is.close();
295
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455 } catch (IOException ex) {
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456 repo.getContext().getLog().info(getClass(), ex, null);
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457 }
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458 }
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459 }
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460 return false;
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461 }
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462
287
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463 private static boolean todoCheckFlagsEqual(FileInfo f, HgManifest.Flags originalManifestFlags) {
58
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464 // FIXME implement
280
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465 return true;
58
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466 }
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467
229
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468 /**
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469 * Configure status collector to consider only subset of a working copy tree. Tries to be as effective as possible, and to
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470 * traverse only relevant part of working copy on the filesystem.
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471 *
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472 * @param hgRepo repository
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473 * @param paths repository-relative files and/or directories. Directories are processed recursively.
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474 *
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475 * @return new instance of {@link HgWorkingCopyStatusCollector}, ready to {@link #walk(int, HgStatusInspector) walk} associated working copy
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476 */
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477 @Experimental(reason="Provisional API")
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478 public static HgWorkingCopyStatusCollector create(HgRepository hgRepo, Path... paths) {
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479 ArrayList<Path> f = new ArrayList<Path>(5);
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480 ArrayList<Path> d = new ArrayList<Path>(5);
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481 for (Path p : paths) {
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482 if (p.isDirectory()) {
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483 d.add(p);
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484 } else {
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485 f.add(p);
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486 }
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487 }
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488 // final Path[] dirs = f.toArray(new Path[d.size()]);
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489 if (d.isEmpty()) {
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490 final Path[] files = f.toArray(new Path[f.size()]);
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491 FileIterator fi = new FileListIterator(hgRepo.getWorkingDir(), files);
229
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492 return new HgWorkingCopyStatusCollector(hgRepo, fi);
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493 }
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494 //
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495
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496 //FileIterator fi = file.isDirectory() ? new DirFileIterator(hgRepo, file) : new FileListIterator(, file);
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497 FileIterator fi = new HgInternals(hgRepo).createWorkingDirWalker(new PathScope(true, paths));
226
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498 return new HgWorkingCopyStatusCollector(hgRepo, fi);
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499 }
229
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500
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501 /**
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502 * Configure collector object to calculate status for matching files only.
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503 * This method may be less effective than explicit list of files as it iterates over whole repository
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504 * (thus supplied matcher doesn't need to care if directories to files in question are also in scope,
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505 * see {@link FileWalker#FileWalker(File, Path.Source, Path.Matcher)})
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506 *
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507 * @return new instance of {@link HgWorkingCopyStatusCollector}, ready to {@link #walk(int, HgStatusInspector) walk} associated working copy
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diff changeset
508 */
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509 @Experimental(reason="Provisional API. May add boolean strict argument for those who write smart matchers that can be used in FileWalker")
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510 public static HgWorkingCopyStatusCollector create(HgRepository hgRepo, Path.Matcher scope) {
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511 FileIterator w = new HgInternals(hgRepo).createWorkingDirWalker(null);
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512 FileIterator wf = (scope == null || scope instanceof Path.Matcher.Any) ? w : new FileIteratorFilter(w, scope);
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513 // the reason I need to iterate over full repo and apply filter is that I have no idea whatsoever about
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514 // patterns in the scope. I.e. if scope lists a file (PathGlobMatcher("a/b/c.txt")), FileWalker won't get deep
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515 // to the file unless matcher would also explicitly include "a/", "a/b/" in scope. Since I can't rely
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516 // users would write robust matchers, and I don't see a decent way to enforce that (i.e. factory to produce
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517 // correct matcher from Path is much like what PathScope does, and can be accessed directly with #create(repo, Path...)
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diff changeset
518 // method above/
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diff changeset
519 return new HgWorkingCopyStatusCollector(hgRepo, wf);
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diff changeset
520 }
226
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diff changeset
521
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diff changeset
522 private static class FileListIterator implements FileIterator {
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523 private final File dir;
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524 private final Path[] paths;
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diff changeset
525 private int index;
287
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diff changeset
526 private RegularFileInfo nextFile;
226
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diff changeset
527
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diff changeset
528 public FileListIterator(File startDir, Path... files) {
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diff changeset
529 dir = startDir;
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diff changeset
530 paths = files;
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diff changeset
531 reset();
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532 }
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533
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534 public void reset() {
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535 index = -1;
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536 nextFile = new RegularFileInfo();
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537 }
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538
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539 public boolean hasNext() {
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540 return paths.length > 0 && index < paths.length-1;
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541 }
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542
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543 public void next() {
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544 index++;
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545 if (index == paths.length) {
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546 throw new NoSuchElementException();
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547 }
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548 nextFile.init(new File(dir, paths[index].toString()));
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549 }
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550
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551 public Path name() {
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552 return paths[index];
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553 }
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554
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555 public FileInfo file() {
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556 return nextFile;
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557 }
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558
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559 public boolean inScope(Path file) {
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560 for (int i = 0; i < paths.length; i++) {
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561 if (paths[i].equals(file)) {
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562 return true;
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563 }
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564 }
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565 return false;
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566 }
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567 }
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568
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569 private static class FileIteratorFilter implements FileIterator {
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570 private final Path.Matcher filter;
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571 private final FileIterator walker;
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572 private boolean didNext = false;
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573
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574 public FileIteratorFilter(FileIterator fileWalker, Path.Matcher filterMatcher) {
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575 assert fileWalker != null;
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576 assert filterMatcher != null;
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577 filter = filterMatcher;
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578 walker = fileWalker;
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579 }
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580
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581 public void reset() {
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582 walker.reset();
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583 }
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584
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585 public boolean hasNext() {
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586 while (walker.hasNext()) {
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587 walker.next();
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588 if (filter.accept(walker.name())) {
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589 didNext = true;
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590 return true;
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591 }
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592 }
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593 return false;
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594 }
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595
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596 public void next() {
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597 if (didNext) {
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598 didNext = false;
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599 } else {
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600 if (!hasNext()) {
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601 throw new NoSuchElementException();
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602 }
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603 }
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604 }
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605
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606 public Path name() {
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607 return walker.name();
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608 }
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609
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610 public FileInfo file() {
226
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611 return walker.file();
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612 }
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613
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614 public boolean inScope(Path file) {
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615 return filter.accept(file);
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616 }
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617 }
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618 }