Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgWorkingCopyStatusCollector.java @ 306:971baa95fb07

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Experimental code to build file history, handy access to changeset added
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 22 Sep 2011 04:05:41 +0200
parents 981f9f50bb6c
children fb74133d2025
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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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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diff changeset
217 } else {
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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parents: 219
diff changeset
218 inspector.unknown(fname);
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parents: 219
diff changeset
219 }
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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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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)
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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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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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238 // missing known file from a working dir
293
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diff changeset
239 if (ds.checkRemoved(m) == null) {
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6f1b88693d48 Complete refactoring to org.tmatesoft
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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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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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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
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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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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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
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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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diff changeset
267 inspector.clean(fname);
290
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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);
282
e51dd9a14b6f Yet another WC status fix, where dirstate parent and base revision are treated right (dirstate parent other than tip and explicit baseRevision are not the same)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 280
diff changeset
275 if (!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
276 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
277 } else {
42fe9a94b9d0 Report files as clean when no difference but timestamp found
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
278 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
279 }
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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280 }
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
281 } 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
282 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
283 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
284 } else {
290
8faad08c709b Expose dirstate to allow pre-configuration of FileIterators for status collection in particular
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parents: 287
diff changeset
285 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
286 }
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
287 } 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
288 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
289 } 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
290 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
291 }
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
292 }
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
293
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
294 // 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
295 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
296 // 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
297 Nodeid nid1 = collect.nodeid(fname);
6dbbc53fc46d Use Path instead of plain String for manifest file names
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parents: 284
diff changeset
298 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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diff changeset
299 HgDirstate.Record r;
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parents:
diff changeset
300 if (nid1 == null) {
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parents:
diff changeset
301 // 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
302 // 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
303 // merged: was not known, report as added?
90
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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parents: 89
diff changeset
304 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
305 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
306 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
307 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
308 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
309 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
310 }
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 } 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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parents: 148
diff changeset
312 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
313 // FIXME report to a mediator, continue status collection
90
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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parents: 89
diff changeset
314 }
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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parents: 89
diff changeset
315 } 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
316 if (r.copySource() != null && baseRevNames.contains(r.copySource())) {
8faad08c709b Expose dirstate to allow pre-configuration of FileIterators for status collection in particular
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parents: 287
diff changeset
317 baseRevNames.remove(r.copySource()); // XXX surely I shall not report rename source as Removed?
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318 inspector.copied(r.copySource(), fname);
58
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319 return;
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320 }
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321 // fall-through, report as added
59
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322 } else if (getDirstate().checkRemoved(fname) != null) {
58
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323 // removed: removed file was not known at the time of baseRevision, and we should not report it as removed
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324 return;
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325 }
226
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326 inspector.added(fname);
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327 } else {
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328 // was known; check whether clean or modified
285
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329 Nodeid nidFromDirstate = getDirstateParentManifest().nodeid(fname);
282
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330 if ((r = getDirstate().checkNormal(fname)) != null && nid1.equals(nidFromDirstate)) {
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331 // regular file, was the same up to WC initialization. Check if was modified since, and, if not, report right away
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332 // same code as in #checkLocalStatusAgainstFile
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333 final boolean timestampEqual = f.lastModified() == r.modificationTime(), sizeEqual = r.size() == f.length();
282
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334 boolean handled = false;
280
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335 if (timestampEqual && sizeEqual) {
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336 inspector.clean(fname);
282
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337 handled = true;
290
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338 } else if (!sizeEqual && r.size() >= 0) {
280
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339 inspector.modified(fname);
282
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340 handled = true;
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341 } else if (!todoCheckFlagsEqual(f, flags)) {
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342 // seems like flags have changed, no reason to check content further
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343 inspector.modified(fname);
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344 handled = true;
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345 }
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346 if (handled) {
285
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347 baseRevNames.remove(fname); // consumed, processed, handled.
280
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348 return;
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349 }
282
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350 // otherwise, shall check actual content (size not the same, or unknown (-1 or -2), or timestamp is different,
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351 // or nodeid in dirstate is different, but local change might have brought it back to baseRevision state)
280
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352 // FALL THROUGH
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353 }
282
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354 if (r != null || (r = getDirstate().checkMerged(fname)) != null || (r = getDirstate().checkAdded(fname)) != null) {
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355 // check actual content to see actual changes
280
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356 // when added - seems to be the case of a file added once again, hence need to check if content is different
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357 // either clean or modified
282
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358 HgDataFile fileNode = repo.getFileNode(fname);
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359 if (areTheSame(f, fileNode, nid1)) {
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360 inspector.clean(fname);
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361 } else {
282
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362 inspector.modified(fname);
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363 }
285
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364 baseRevNames.remove(fname); // consumed, processed, handled.
226
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365 } else if (getDirstate().checkRemoved(fname) != null) {
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366 // was known, and now marked as removed, report it right away, do not rely on baseRevNames processing later
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367 inspector.removed(fname);
285
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368 baseRevNames.remove(fname); // consumed, processed, handled.
58
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369 }
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370 // only those left in baseRevNames after processing are reported as removed
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371 }
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372
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373 // 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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374 // 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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375 // 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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376 // changeset nodeid + hash(actual content) => entry (Nodeid) in the next Manifest
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377 // 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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378 // The question is whether original Hg treats this case (same content, different parents and hence nodeids) as 'modified' or 'clean'
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379 }
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380
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381 private boolean areTheSame(FileInfo f, HgDataFile dataFile, Nodeid revision) {
157
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382 // XXX consider adding HgDataDile.compare(File/byte[]/whatever) operation to optimize comparison
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383 ByteArrayChannel bac = new ByteArrayChannel();
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384 boolean ioFailed = false;
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diff changeset
385 try {
282
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386 int localRevision = dataFile.getLocalRevision(revision);
157
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387 // need content with metadata striped off - although theoretically chances are metadata may be different,
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388 // WC doesn't have it anyway
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diff changeset
389 dataFile.content(localRevision, bac);
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diff changeset
390 } catch (CancelledException ex) {
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391 // silently ignore - can't happen, ByteArrayChannel is not cancellable
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diff changeset
392 } catch (HgException ex) {
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393 ioFailed = true;
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394 }
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395 return !ioFailed && areTheSame(f, bac.toArray(), dataFile.getPath());
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396 }
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397
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398 private boolean areTheSame(FileInfo f, final byte[] data, Path p) {
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399 ReadableByteChannel is = null;
295
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400 class Check implements ByteChannel {
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401 final boolean debug = repo.getContext().getLog().isDebug();
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402 boolean sameSoFar = true;
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diff changeset
403 int x = 0;
219
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404
295
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405 public int write(ByteBuffer buffer) {
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406 for (int i = buffer.remaining(); i > 0; i--, x++) {
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407 if (x >= data.length /*file has been appended*/ || data[x] != buffer.get()) {
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diff changeset
408 if (debug) {
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diff changeset
409 byte[] xx = new byte[15];
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410 if (buffer.position() > 5) {
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411 buffer.position(buffer.position() - 5);
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412 }
295
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413 buffer.get(xx, 0, min(xx.length, i));
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414 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));
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415 }
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416 sameSoFar = false;
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417 break;
219
d63583b47bfa ArrayIndexOutOfBoundsException when file appended. Erroneous 'areTheSame' when trailing were deleted.
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418 }
117
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419 }
295
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420 buffer.position(buffer.limit()); // mark as read
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421 return buffer.limit();
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422 }
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423
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424 public boolean sameSoFar() {
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425 return sameSoFar;
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426 }
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427 public boolean ultimatelyTheSame() {
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428 return sameSoFar && x == data.length;
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429 }
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430 };
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431 Check check = new Check();
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432 try {
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433 is = f.newInputChannel();
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434 ByteBuffer fb = ByteBuffer.allocate(min(1 + data.length * 2 /*to fit couple of lines appended; never zero*/, 8192));
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435 FilterByteChannel filters = new FilterByteChannel(check, repo.getFiltersFromWorkingDirToRepo(p));
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436 while (is.read(fb) != -1 && check.sameSoFar()) {
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437 fb.flip();
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438 filters.write(fb);
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439 fb.compact();
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440 }
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441 return check.ultimatelyTheSame();
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442 } catch (CancelledException ex) {
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443 repo.getContext().getLog().warn(getClass(), ex, "Unexpected cancellation");
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444 return check.ultimatelyTheSame();
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445 } catch (IOException ex) {
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446 repo.getContext().getLog().warn(getClass(), ex, null);
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447 } finally {
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448 if (is != null) {
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449 try {
287
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450 is.close();
295
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451 } catch (IOException ex) {
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452 repo.getContext().getLog().info(getClass(), ex, null);
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453 }
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454 }
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455 }
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456 return false;
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457 }
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458
287
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459 private static boolean todoCheckFlagsEqual(FileInfo f, HgManifest.Flags originalManifestFlags) {
58
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460 // FIXME implement
280
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461 return true;
58
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462 }
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463
229
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464 /**
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465 * 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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466 * traverse only relevant part of working copy on the filesystem.
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467 *
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468 * @param hgRepo repository
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469 * @param paths repository-relative files and/or directories. Directories are processed recursively.
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470 *
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471 * @return new instance of {@link HgWorkingCopyStatusCollector}, ready to {@link #walk(int, HgStatusInspector) walk} associated working copy
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472 */
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473 @Experimental(reason="Provisional API")
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474 public static HgWorkingCopyStatusCollector create(HgRepository hgRepo, Path... paths) {
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475 ArrayList<Path> f = new ArrayList<Path>(5);
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476 ArrayList<Path> d = new ArrayList<Path>(5);
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477 for (Path p : paths) {
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478 if (p.isDirectory()) {
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479 d.add(p);
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480 } else {
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481 f.add(p);
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482 }
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483 }
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484 // final Path[] dirs = f.toArray(new Path[d.size()]);
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485 if (d.isEmpty()) {
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486 final Path[] files = f.toArray(new Path[f.size()]);
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487 FileIterator fi = new FileListIterator(hgRepo.getWorkingDir(), files);
229
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488 return new HgWorkingCopyStatusCollector(hgRepo, fi);
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489 }
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490 //
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491
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492 //FileIterator fi = file.isDirectory() ? new DirFileIterator(hgRepo, file) : new FileListIterator(, file);
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493 FileIterator fi = new HgInternals(hgRepo).createWorkingDirWalker(new PathScope(true, paths));
226
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494 return new HgWorkingCopyStatusCollector(hgRepo, fi);
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495 }
229
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496
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497 /**
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498 * Configure collector object to calculate status for matching files only.
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499 * This method may be less effective than explicit list of files as it iterates over whole repository
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500 * (thus supplied matcher doesn't need to care if directories to files in question are also in scope,
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501 * see {@link FileWalker#FileWalker(File, Path.Source, Path.Matcher)})
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502 *
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503 * @return new instance of {@link HgWorkingCopyStatusCollector}, ready to {@link #walk(int, HgStatusInspector) walk} associated working copy
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504 */
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505 @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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506 public static HgWorkingCopyStatusCollector create(HgRepository hgRepo, Path.Matcher scope) {
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507 FileIterator w = new HgInternals(hgRepo).createWorkingDirWalker(null);
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508 FileIterator wf = (scope == null || scope instanceof Path.Matcher.Any) ? w : new FileIteratorFilter(w, scope);
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509 // the reason I need to iterate over full repo and apply filter is that I have no idea whatsoever about
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510 // 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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511 // to the file unless matcher would also explicitly include "a/", "a/b/" in scope. Since I can't rely
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512 // 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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513 // correct matcher from Path is much like what PathScope does, and can be accessed directly with #create(repo, Path...)
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514 // method above/
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515 return new HgWorkingCopyStatusCollector(hgRepo, wf);
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diff changeset
516 }
226
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517
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diff changeset
518 private static class FileListIterator implements FileIterator {
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519 private final File dir;
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520 private final Path[] paths;
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521 private int index;
287
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522 private RegularFileInfo nextFile;
226
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523
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524 public FileListIterator(File startDir, Path... files) {
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525 dir = startDir;
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526 paths = files;
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diff changeset
527 reset();
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528 }
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529
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530 public void reset() {
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531 index = -1;
287
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532 nextFile = new RegularFileInfo();
226
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533 }
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534
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535 public boolean hasNext() {
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536 return paths.length > 0 && index < paths.length-1;
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537 }
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538
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539 public void next() {
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540 index++;
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541 if (index == paths.length) {
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542 throw new NoSuchElementException();
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543 }
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544 nextFile.init(new File(dir, paths[index].toString()));
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545 }
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546
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547 public Path name() {
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548 return paths[index];
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549 }
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550
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551 public FileInfo file() {
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552 return nextFile;
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553 }
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554
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555 public boolean inScope(Path file) {
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556 for (int i = 0; i < paths.length; i++) {
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557 if (paths[i].equals(file)) {
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558 return true;
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559 }
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560 }
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561 return false;
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562 }
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563 }
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564
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565 private static class FileIteratorFilter implements FileIterator {
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566 private final Path.Matcher filter;
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567 private final FileIterator walker;
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568 private boolean didNext = false;
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569
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570 public FileIteratorFilter(FileIterator fileWalker, Path.Matcher filterMatcher) {
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571 assert fileWalker != null;
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572 assert filterMatcher != null;
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573 filter = filterMatcher;
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574 walker = fileWalker;
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575 }
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576
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577 public void reset() {
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578 walker.reset();
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579 }
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580
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581 public boolean hasNext() {
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582 while (walker.hasNext()) {
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583 walker.next();
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584 if (filter.accept(walker.name())) {
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585 didNext = true;
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586 return true;
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587 }
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588 }
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589 return false;
226
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590 }
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591
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592 public void next() {
229
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593 if (didNext) {
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594 didNext = false;
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595 } else {
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596 if (!hasNext()) {
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597 throw new NoSuchElementException();
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598 }
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599 }
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600 }
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601
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602 public Path name() {
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603 return walker.name();
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604 }
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605
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606 public FileInfo file() {
226
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607 return walker.file();
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608 }
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609
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610 public boolean inScope(Path file) {
229
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611 return filter.accept(file);
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612 }
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613 }
58
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614 }