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annotate src/org/tmatesoft/hg/repo/HgWorkingCopyStatusCollector.java @ 285:6dbbc53fc46d

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Use Path instead of plain String for manifest file names
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Sat, 03 Sep 2011 21:46:13 +0200
parents 7232b94f2ae3
children ed6b74a58c66
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.FileInputStream;
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25 import java.io.IOException;
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26 import java.nio.ByteBuffer;
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27 import java.nio.channels.FileChannel;
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28 import java.util.ArrayList;
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29 import java.util.Collections;
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30 import java.util.NoSuchElementException;
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31 import java.util.Set;
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32 import java.util.TreeSet;
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33
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34 import org.tmatesoft.hg.core.HgDataStreamException;
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35 import org.tmatesoft.hg.core.HgException;
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36 import org.tmatesoft.hg.core.Nodeid;
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37 import org.tmatesoft.hg.internal.ByteArrayChannel;
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38 import org.tmatesoft.hg.internal.Experimental;
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39 import org.tmatesoft.hg.internal.FilterByteChannel;
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40 import org.tmatesoft.hg.internal.ManifestRevision;
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41 import org.tmatesoft.hg.internal.PathScope;
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42 import org.tmatesoft.hg.util.ByteChannel;
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43 import org.tmatesoft.hg.util.CancelledException;
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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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50 /**
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51 *
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52 * @author Artem Tikhomirov
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53 * @author TMate Software Ltd.
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54 */
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55 public class HgWorkingCopyStatusCollector {
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57 private final HgRepository repo;
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58 private final FileIterator repoWalker;
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59 private HgDirstate dirstate;
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60 private HgStatusCollector baseRevisionCollector;
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61 private PathPool pathPool;
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62 private ManifestRevision dirstateParentManifest;
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64 public HgWorkingCopyStatusCollector(HgRepository hgRepo) {
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65 this(hgRepo, new HgInternals(hgRepo).createWorkingDirWalker(null));
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66 }
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67
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68 // FIXME document cons
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69 public HgWorkingCopyStatusCollector(HgRepository hgRepo, FileIterator hgRepoWalker) {
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70 repo = hgRepo;
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71 repoWalker = hgRepoWalker;
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72 }
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74 /**
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75 * Optionally, supply a collector instance that may cache (or have already cached) base revision
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76 * @param sc may be null
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77 */
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78 public void setBaseRevisionCollector(HgStatusCollector sc) {
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79 baseRevisionCollector = sc;
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80 }
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81
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82 /*package-local*/ PathPool getPathPool() {
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83 if (pathPool == null) {
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84 if (baseRevisionCollector == null) {
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85 pathPool = new PathPool(new PathRewrite.Empty());
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86 } else {
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87 return baseRevisionCollector.getPathPool();
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88 }
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89 }
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90 return pathPool;
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91 }
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92
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93 public void setPathPool(PathPool pathPool) {
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94 this.pathPool = pathPool;
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95 }
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96
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98 private HgDirstate getDirstate() {
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99 if (dirstate == null) {
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100 dirstate = repo.loadDirstate(getPathPool());
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101 }
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102 return dirstate;
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103 }
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104
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105 private ManifestRevision getManifest(int changelogLocalRev) {
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106 assert changelogLocalRev >= 0;
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107 ManifestRevision mr;
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108 if (baseRevisionCollector != null) {
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109 mr = baseRevisionCollector.raw(changelogLocalRev);
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110 } else {
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111 mr = new ManifestRevision(null, null);
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112 repo.getManifest().walk(changelogLocalRev, changelogLocalRev, mr);
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113 }
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114 return mr;
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115 }
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116
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117 private ManifestRevision getDirstateParentManifest() {
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118 // WC not necessarily points to TIP, but may be result of update to any previous revision.
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119 // 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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120 if (dirstateParentManifest == null) {
284
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121 Nodeid dirstateParent = getDirstate().parents().first();
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122 if (dirstateParent.isNull()) {
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123 dirstateParentManifest = baseRevisionCollector != null ? baseRevisionCollector.raw(-1) : HgStatusCollector.createEmptyManifestRevision();
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124 } else {
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125 int changelogLocalRev = repo.getChangelog().getLocalRevision(dirstateParent);
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126 dirstateParentManifest = getManifest(changelogLocalRev);
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127 }
282
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128 }
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129 return dirstateParentManifest;
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130 }
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131
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132 // may be invoked few times, TIP or WORKING_COPY indicate comparison shall be run against working copy parent
275
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133 // NOTE, use of TIP constant requires certain care. TIP here doesn't mean latest cset, but actual working copy parent.
93
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134 public void walk(int baseRevision, HgStatusInspector inspector) {
282
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135 if (HgInternals.wrongLocalRevision(baseRevision) || baseRevision == BAD_REVISION) {
218
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136 throw new IllegalArgumentException(String.valueOf(baseRevision));
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137 }
282
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138 ManifestRevision collect = null; // non null indicates we compare against base revision
285
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139 Set<Path> baseRevFiles = Collections.emptySet(); // files from base revision not affected by status calculation
282
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140 if (baseRevision != TIP && baseRevision != WORKING_COPY) {
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141 collect = getManifest(baseRevision);
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142 baseRevFiles = new TreeSet<Path>(collect.files());
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143 }
94
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144 if (inspector instanceof HgStatusCollector.Record) {
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145 HgStatusCollector sc = baseRevisionCollector == null ? new HgStatusCollector(repo) : baseRevisionCollector;
282
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146 // nodeidAfterChange(dirstate's parent) doesn't make too much sense,
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147 // because the change might be actually in working copy. Nevertheless,
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148 // as long as no nodeids can be provided for WC, seems reasonable to report
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149 // latest known nodeid change (although at the moment this is not used and
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150 // is done mostly not to leave stale initialization in the Record)
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151 int rev1,rev2 = getDirstateParentManifest().changesetLocalRev();
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152 if (baseRevision == TIP || baseRevision == WORKING_COPY) {
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153 rev1 = rev2 - 1; // just use revision prior to dirstate's parent
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154 } else {
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155 rev1 = baseRevision;
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156 }
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157 ((HgStatusCollector.Record) inspector).init(rev1, rev2, sc);
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158 }
282
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159 final HgIgnore hgIgnore = repo.getIgnore();
284
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160 TreeSet<Path> knownEntries = getDirstate().all();
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161 repoWalker.reset();
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162 while (repoWalker.hasNext()) {
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163 repoWalker.next();
284
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164 final Path fname = getPathPool().path(repoWalker.name());
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165 File f = repoWalker.file();
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166 if (!f.exists()) {
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167 // file coming from iterator doesn't exist.
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168 if (knownEntries.remove(fname)) {
226
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169 if (getDirstate().checkRemoved(fname) == null) {
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170 inspector.missing(fname);
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171 } else {
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172 inspector.removed(fname);
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173 }
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174 // do not report it as removed later
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175 if (collect != null) {
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176 baseRevFiles.remove(fname);
226
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177 }
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178 } else {
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179 // chances are it was known in baseRevision. We may rely
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180 // that later iteration over baseRevFiles leftovers would yield correct Removed,
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181 // but it doesn't hurt to be explicit (provided we know fname *is* inScope of the FileIterator
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182 if (collect != null && baseRevFiles.remove(fname)) {
226
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183 inspector.removed(fname);
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184 } else {
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185 // not sure I shall report such files (i.e. arbitrary name coming from FileIterator)
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186 // as unknown. Command-line HG aborts "system can't find the file specified"
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187 // in similar case (against wc), or just gives nothing if --change <rev> is specified.
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188 // however, as it's unlikely to get unexisting files from FileIterator, and
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189 // its better to see erroneous file status rather than not to see any (which is too easy
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190 // to overlook), I think unknown() is reasonable approach here
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191 inspector.unknown(fname);
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192 }
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193 }
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194 continue;
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195 }
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196 assert f.isFile();
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197 if (knownEntries.remove(fname)) {
226
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198 // tracked file.
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199 // modified, added, removed, clean
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200 if (collect != null) { // need to check against base revision, not FS file
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201 checkLocalStatusAgainstBaseRevision(baseRevFiles, collect, baseRevision, fname, f, inspector);
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202 } else {
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203 checkLocalStatusAgainstFile(fname, f, inspector);
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204 }
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205 } else {
226
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206 if (hgIgnore.isIgnored(fname)) { // hgignore shall be consulted only for non-tracked files
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207 inspector.ignored(fname);
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208 } else {
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209 inspector.unknown(fname);
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210 }
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diff changeset
211 // the file is not tracked. Even if it's known at baseRevision, we don't need to remove it
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diff changeset
212 // from baseRevFiles, it might need to be reported as removed as well (cmdline client does
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diff changeset
213 // yield two statuses for the same file)
58
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214 }
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215 }
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diff changeset
216 if (collect != null) {
285
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diff changeset
217 for (Path fromBase : baseRevFiles) {
226
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diff changeset
218 if (repoWalker.inScope(fromBase)) {
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diff changeset
219 inspector.removed(fromBase);
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diff changeset
220 }
58
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221 }
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222 }
284
7232b94f2ae3 HgDirstate shall operate with Path instead of String for file names. Use of Pair instead of array of unspecified length for parents.
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223 for (Path m : knownEntries) {
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diff changeset
224 if (!repoWalker.inScope(m)) {
226
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225 // do not report as missing/removed those FileIterator doesn't care about.
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diff changeset
226 continue;
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diff changeset
227 }
74
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
228 // missing known file from a working dir
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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
229 if (getDirstate().checkRemoved(m) == null) {
74
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diff changeset
230 // not removed from the repository = 'deleted'
284
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diff changeset
231 inspector.missing(m);
74
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diff changeset
232 } else {
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
233 // 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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234 // 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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235 if (collect == null || baseRevFiles.contains(m)) {
284
7232b94f2ae3 HgDirstate shall operate with Path instead of String for file names. Use of Pair instead of array of unspecified length for parents.
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diff changeset
236 inspector.removed(m);
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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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237 }
58
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238 }
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239 }
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240 }
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241
94
af1f3b78b918 *StatusCollector renamed to Hg*StatusCollector
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diff changeset
242 public HgStatusCollector.Record status(int baseRevision) {
af1f3b78b918 *StatusCollector renamed to Hg*StatusCollector
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diff changeset
243 HgStatusCollector.Record rv = new HgStatusCollector.Record();
58
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244 walk(baseRevision, rv);
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245 return rv;
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246 }
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247
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248 //********************************************
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249
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250
141
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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diff changeset
251 private void checkLocalStatusAgainstFile(Path fname, File 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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252 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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253 if ((r = getDirstate().checkNormal(fname)) != null) {
58
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254 // either clean or modified
280
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diff changeset
255 final boolean timestampEqual = getFileModificationTime(f) == r.time, sizeEqual = r.size == f.length();
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diff changeset
256 if (timestampEqual && sizeEqual) {
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diff changeset
257 inspector.clean(fname);
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diff changeset
258 } else if (!sizeEqual && r.size >= 0) {
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diff changeset
259 inspector.modified(fname);
58
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diff changeset
260 } else {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
261 // 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
262 // 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
263 HgDataFile df = repo.getFileNode(fname);
285
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diff changeset
264 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)
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parents: 280
diff changeset
265 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
266 inspector.modified(df.getPath());
180
42fe9a94b9d0 Report files as clean when no difference but timestamp found
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parents: 157
diff changeset
267 } else {
42fe9a94b9d0 Report files as clean when no difference but timestamp found
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diff changeset
268 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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diff changeset
269 }
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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270 }
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diff changeset
271 } else if ((r = getDirstate().checkAdded(fname)) != null) {
58
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diff changeset
272 if (r.name2 == null) {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
273 inspector.added(fname);
58
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diff changeset
274 } else {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
275 inspector.copied(getPathPool().path(r.name2), 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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276 }
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
277 } 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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diff changeset
278 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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279 } 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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diff changeset
280 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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281 }
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282 }
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parents:
diff changeset
283
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
284 // return mtime analog, directly comparable to dirstate's mtime.
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
285 private static int getFileModificationTime(File f) {
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
286 return (int) (f.lastModified() / 1000);
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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parents: 275
diff changeset
287 }
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
288
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
289 // XXX refactor checkLocalStatus methods in more OO way
285
6dbbc53fc46d Use Path instead of plain String for manifest file names
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parents: 284
diff changeset
290 private void checkLocalStatusAgainstBaseRevision(Set<Path> baseRevNames, ManifestRevision collect, int baseRevision, Path fname, File 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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diff changeset
291 // 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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diff changeset
292 Nodeid nid1 = collect.nodeid(fname);
6dbbc53fc46d Use Path instead of plain String for manifest file names
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diff changeset
293 HgManifest.Flags flags = collect.flags(fname);
58
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diff changeset
294 HgDirstate.Record r;
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diff changeset
295 if (nid1 == null) {
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diff changeset
296 // normal: added?
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diff changeset
297 // added: not known at the time of baseRevision, shall report
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diff changeset
298 // 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
299 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
300 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
301 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
302 if (origin != null) {
226
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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diff changeset
303 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
304 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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diff changeset
305 }
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 } 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
307 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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diff changeset
308 // FIXME report to a mediator, continue status collection
90
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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diff changeset
309 }
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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diff changeset
310 } else if ((r = getDirstate().checkAdded(fname)) != null) {
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
311 if (r.name2 != null && baseRevNames.contains(r.name2)) {
90
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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parents: 89
diff changeset
312 baseRevNames.remove(r.name2); // XXX surely I shall not report rename source as Removed?
285
6dbbc53fc46d Use Path instead of plain String for manifest file names
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parents: 284
diff changeset
313 inspector.copied(r.name2, 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
314 return;
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
315 }
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
316 // fall-through, report as added
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
317 } else if (getDirstate().checkRemoved(fname) != null) {
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:
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318 // removed: removed file was not known at the time of baseRevision, and we should not report it as removed
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319 return;
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320 }
226
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321 inspector.added(fname);
58
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322 } else {
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323 // was known; check whether clean or modified
285
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324 Nodeid nidFromDirstate = getDirstateParentManifest().nodeid(fname);
282
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325 if ((r = getDirstate().checkNormal(fname)) != null && nid1.equals(nidFromDirstate)) {
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326 // regular file, was the same up to WC initialization. Check if was modified since, and, if not, report right away
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327 // same code as in #checkLocalStatusAgainstFile
280
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328 final boolean timestampEqual = getFileModificationTime(f) == r.time, sizeEqual = r.size == f.length();
282
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329 boolean handled = false;
280
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330 if (timestampEqual && sizeEqual) {
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331 inspector.clean(fname);
282
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332 handled = true;
280
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333 } else if (!sizeEqual && r.size >= 0) {
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334 inspector.modified(fname);
282
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335 handled = true;
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336 } else if (!todoCheckFlagsEqual(f, flags)) {
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337 // seems like flags have changed, no reason to check content further
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338 inspector.modified(fname);
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339 handled = true;
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340 }
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341 if (handled) {
285
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342 baseRevNames.remove(fname); // consumed, processed, handled.
280
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343 return;
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344 }
282
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345 // otherwise, shall check actual content (size not the same, or unknown (-1 or -2), or timestamp is different,
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346 // or nodeid in dirstate is different, but local change might have brought it back to baseRevision state)
280
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347 // FALL THROUGH
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348 }
282
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349 if (r != null || (r = getDirstate().checkMerged(fname)) != null || (r = getDirstate().checkAdded(fname)) != null) {
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350 // check actual content to see actual changes
280
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351 // 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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352 // either clean or modified
282
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353 HgDataFile fileNode = repo.getFileNode(fname);
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354 if (areTheSame(f, fileNode, nid1)) {
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355 inspector.clean(fname);
58
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356 } else {
282
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357 inspector.modified(fname);
58
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358 }
285
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359 baseRevNames.remove(fname); // consumed, processed, handled.
226
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360 } else if (getDirstate().checkRemoved(fname) != null) {
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361 // was known, and now marked as removed, report it right away, do not rely on baseRevNames processing later
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362 inspector.removed(fname);
285
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363 baseRevNames.remove(fname); // consumed, processed, handled.
58
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364 }
226
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365 // only those left in baseRevNames after processing are reported as removed
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366 }
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367
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368 // 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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369 // 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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370 // 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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371 // changeset nodeid + hash(actual content) => entry (Nodeid) in the next Manifest
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372 // 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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373 // The question is whether original Hg treats this case (same content, different parents and hence nodeids) as 'modified' or 'clean'
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374 }
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375
282
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376 private boolean areTheSame(File f, HgDataFile dataFile, Nodeid revision) {
157
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377 // XXX consider adding HgDataDile.compare(File/byte[]/whatever) operation to optimize comparison
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378 ByteArrayChannel bac = new ByteArrayChannel();
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379 boolean ioFailed = false;
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380 try {
282
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381 int localRevision = dataFile.getLocalRevision(revision);
157
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382 // need content with metadata striped off - although theoretically chances are metadata may be different,
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383 // WC doesn't have it anyway
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384 dataFile.content(localRevision, bac);
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385 } catch (CancelledException ex) {
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386 // silently ignore - can't happen, ByteArrayChannel is not cancellable
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387 } catch (HgException ex) {
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388 ioFailed = true;
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389 }
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390 return !ioFailed && areTheSame(f, bac.toArray(), dataFile.getPath());
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391 }
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392
117
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393 private boolean areTheSame(File f, final byte[] data, Path p) {
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394 FileInputStream fis = null;
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395 try {
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396 try {
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397 fis = new FileInputStream(f);
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398 FileChannel fc = fis.getChannel();
226
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diff changeset
399 ByteBuffer fb = ByteBuffer.allocate(min(1 + data.length * 2 /*to fit couple of lines appended; never zero*/, 8192));
219
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400 class Check implements ByteChannel {
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diff changeset
401 final boolean debug = false; // XXX may want to add global variable to allow clients to turn
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402 boolean sameSoFar = true;
117
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diff changeset
403 int x = 0;
219
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404
148
1a7a9a20e1f9 Exceptions, javadoc. Initial cancel and progress support
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diff changeset
405 public int write(ByteBuffer buffer) {
117
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406 for (int i = buffer.remaining(); i > 0; i--, x++) {
219
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diff changeset
407 if (x >= data.length /*file has been appended*/ || data[x] != buffer.get()) {
120
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408 if (debug) {
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diff changeset
409 byte[] xx = new byte[15];
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diff changeset
410 if (buffer.position() > 5) {
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411 buffer.position(buffer.position() - 5);
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412 }
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diff changeset
413 buffer.get(xx);
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414 System.out.print("expected >>" + new String(data, max(0, x - 4), 20) + "<< but got >>");
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415 System.out.println(new String(xx) + "<<");
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416 }
219
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diff changeset
417 sameSoFar = false;
117
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418 break;
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419 }
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420 }
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421 buffer.position(buffer.limit()); // mark as read
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422 return buffer.limit();
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423 }
219
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424
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425 public boolean sameSoFar() {
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426 return sameSoFar;
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427 }
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428 public boolean ultimatelyTheSame() {
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429 return sameSoFar && x == data.length;
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430 }
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431 };
219
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432 Check check = new Check();
117
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433 FilterByteChannel filters = new FilterByteChannel(check, repo.getFiltersFromWorkingDirToRepo(p));
219
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434 while (fc.read(fb) != -1 && check.sameSoFar()) {
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435 fb.flip();
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436 filters.write(fb);
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437 fb.compact();
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438 }
246
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439 fis.close();
219
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440 return check.ultimatelyTheSame();
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441 } catch (IOException ex) {
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442 if (fis != null) {
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443 fis.close();
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444 }
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445 ex.printStackTrace(); // log warn
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446 }
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447 } catch (/*TODO typed*/Exception ex) {
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448 ex.printStackTrace();
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449 }
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450 return false;
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451 }
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452
285
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453 private static boolean todoCheckFlagsEqual(File f, HgManifest.Flags originalManifestFlags) {
58
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454 // FIXME implement
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35125450c804 Erroneous and slow status for working copies based on non-tip revision
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455 return true;
58
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456 }
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457
229
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458 /**
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459 * 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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460 * traverse only relevant part of working copy on the filesystem.
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461 *
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462 * @param hgRepo repository
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463 * @param paths repository-relative files and/or directories. Directories are processed recursively.
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464 *
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465 * @return new instance of {@link HgWorkingCopyStatusCollector}, ready to {@link #walk(int, HgStatusInspector) walk} associated working copy
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466 */
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467 @Experimental(reason="Provisional API")
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468 public static HgWorkingCopyStatusCollector create(HgRepository hgRepo, Path... paths) {
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469 ArrayList<Path> f = new ArrayList<Path>(5);
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470 ArrayList<Path> d = new ArrayList<Path>(5);
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471 for (Path p : paths) {
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472 if (p.isDirectory()) {
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473 d.add(p);
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474 } else {
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475 f.add(p);
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476 }
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477 }
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478 // final Path[] dirs = f.toArray(new Path[d.size()]);
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479 if (d.isEmpty()) {
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480 final Path[] files = f.toArray(new Path[f.size()]);
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481 FileIterator fi = new FileListIterator(hgRepo.getWorkingDir(), files);
229
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482 return new HgWorkingCopyStatusCollector(hgRepo, fi);
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483 }
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484 //
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485
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486 //FileIterator fi = file.isDirectory() ? new DirFileIterator(hgRepo, file) : new FileListIterator(, file);
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487 FileIterator fi = new HgInternals(hgRepo).createWorkingDirWalker(new PathScope(true, paths));
226
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488 return new HgWorkingCopyStatusCollector(hgRepo, fi);
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489 }
229
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490
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491 /**
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492 * Configure collector object to calculate status for matching files only.
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493 * This method may be less effective than explicit list of files as it iterates over whole repository
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494 * (thus supplied matcher doesn't need to care if directories to files in question are also in scope,
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495 * see {@link FileWalker#FileWalker(File, Path.Source, Path.Matcher)})
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496 *
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497 * @return new instance of {@link HgWorkingCopyStatusCollector}, ready to {@link #walk(int, HgStatusInspector) walk} associated working copy
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498 */
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499 @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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500 public static HgWorkingCopyStatusCollector create(HgRepository hgRepo, Path.Matcher scope) {
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501 FileIterator w = new HgInternals(hgRepo).createWorkingDirWalker(null);
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502 FileIterator wf = (scope == null || scope instanceof Path.Matcher.Any) ? w : new FileIteratorFilter(w, scope);
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503 // the reason I need to iterate over full repo and apply filter is that I have no idea whatsoever about
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504 // 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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505 // to the file unless matcher would also explicitly include "a/", "a/b/" in scope. Since I can't rely
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506 // 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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507 // 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
508 // method above/
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509 return new HgWorkingCopyStatusCollector(hgRepo, wf);
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diff changeset
510 }
226
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511
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diff changeset
512 private static class FileListIterator implements FileIterator {
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513 private final File dir;
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514 private final Path[] paths;
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515 private int index;
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516 private File nextFile; // cache file() in case it's called more than once
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517
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518 public FileListIterator(File startDir, Path... files) {
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519 dir = startDir;
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520 paths = files;
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521 reset();
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522 }
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523
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524 public void reset() {
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525 index = -1;
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526 nextFile = null;
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527 }
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528
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529 public boolean hasNext() {
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530 return paths.length > 0 && index < paths.length-1;
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531 }
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532
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533 public void next() {
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534 index++;
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535 if (index == paths.length) {
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536 throw new NoSuchElementException();
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537 }
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538 nextFile = new File(dir, paths[index].toString());
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539 }
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540
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541 public Path name() {
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542 return paths[index];
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543 }
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544
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545 public File file() {
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546 return nextFile;
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547 }
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548
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549 public boolean inScope(Path file) {
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550 for (int i = 0; i < paths.length; i++) {
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551 if (paths[i].equals(file)) {
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552 return true;
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553 }
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554 }
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555 return false;
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556 }
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557 }
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558
229
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559 private static class FileIteratorFilter implements FileIterator {
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560 private final Path.Matcher filter;
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561 private final FileIterator walker;
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562 private boolean didNext = false;
226
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563
229
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564 public FileIteratorFilter(FileIterator fileWalker, Path.Matcher filterMatcher) {
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565 assert fileWalker != null;
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566 assert filterMatcher != null;
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567 filter = filterMatcher;
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568 walker = fileWalker;
226
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569 }
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570
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571 public void reset() {
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572 walker.reset();
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573 }
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574
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575 public boolean hasNext() {
229
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576 while (walker.hasNext()) {
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577 walker.next();
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578 if (filter.accept(walker.name())) {
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579 didNext = true;
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580 return true;
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581 }
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582 }
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583 return false;
226
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584 }
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585
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586 public void next() {
229
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587 if (didNext) {
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588 didNext = false;
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589 } else {
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590 if (!hasNext()) {
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591 throw new NoSuchElementException();
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592 }
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593 }
226
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594 }
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595
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596 public Path name() {
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597 return walker.name();
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598 }
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599
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600 public File file() {
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601 return walker.file();
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602 }
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603
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604 public boolean inScope(Path file) {
229
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605 return filter.accept(file);
226
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606 }
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607 }
58
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608 }