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annotate src/org/tmatesoft/hg/repo/HgWorkingCopyStatusCollector.java @ 287:ed6b74a58c66

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Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 07 Sep 2011 09:33:27 +0200
parents 6dbbc53fc46d
children 8faad08c709b
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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64
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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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99 private HgDirstate getDirstate() {
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100 if (dirstate == null) {
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101 dirstate = repo.loadDirstate(getPathPool());
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102 }
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103 return dirstate;
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104 }
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105
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106 private ManifestRevision getManifest(int changelogLocalRev) {
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107 assert changelogLocalRev >= 0;
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108 ManifestRevision mr;
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109 if (baseRevisionCollector != null) {
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110 mr = baseRevisionCollector.raw(changelogLocalRev);
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111 } else {
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112 mr = new ManifestRevision(null, null);
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113 repo.getManifest().walk(changelogLocalRev, changelogLocalRev, mr);
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114 }
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115 return mr;
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116 }
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117
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118 private ManifestRevision getDirstateParentManifest() {
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119 // WC not necessarily points to TIP, but may be result of update to any previous revision.
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120 // 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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121 if (dirstateParentManifest == null) {
284
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122 Nodeid dirstateParent = getDirstate().parents().first();
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123 if (dirstateParent.isNull()) {
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124 dirstateParentManifest = baseRevisionCollector != null ? baseRevisionCollector.raw(-1) : HgStatusCollector.createEmptyManifestRevision();
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125 } else {
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126 int changelogLocalRev = repo.getChangelog().getLocalRevision(dirstateParent);
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127 dirstateParentManifest = getManifest(changelogLocalRev);
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128 }
282
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129 }
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130 return dirstateParentManifest;
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131 }
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132
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133 // may be invoked few times, TIP or WORKING_COPY indicate comparison shall be run against working copy parent
275
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134 // 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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135 public void walk(int baseRevision, HgStatusInspector inspector) {
282
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136 if (HgInternals.wrongLocalRevision(baseRevision) || baseRevision == BAD_REVISION) {
218
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137 throw new IllegalArgumentException(String.valueOf(baseRevision));
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138 }
282
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139 ManifestRevision collect = null; // non null indicates we compare against base revision
285
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140 Set<Path> baseRevFiles = Collections.emptySet(); // files from base revision not affected by status calculation
282
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141 if (baseRevision != TIP && baseRevision != WORKING_COPY) {
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142 collect = getManifest(baseRevision);
285
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143 baseRevFiles = new TreeSet<Path>(collect.files());
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144 }
94
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145 if (inspector instanceof HgStatusCollector.Record) {
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146 HgStatusCollector sc = baseRevisionCollector == null ? new HgStatusCollector(repo) : baseRevisionCollector;
282
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147 // nodeidAfterChange(dirstate's parent) doesn't make too much sense,
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148 // because the change might be actually in working copy. Nevertheless,
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149 // as long as no nodeids can be provided for WC, seems reasonable to report
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150 // latest known nodeid change (although at the moment this is not used and
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151 // is done mostly not to leave stale initialization in the Record)
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152 int rev1,rev2 = getDirstateParentManifest().changesetLocalRev();
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153 if (baseRevision == TIP || baseRevision == WORKING_COPY) {
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154 rev1 = rev2 - 1; // just use revision prior to dirstate's parent
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155 } else {
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156 rev1 = baseRevision;
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157 }
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158 ((HgStatusCollector.Record) inspector).init(rev1, rev2, sc);
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159 }
282
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160 final HgIgnore hgIgnore = repo.getIgnore();
284
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161 TreeSet<Path> knownEntries = getDirstate().all();
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162 repoWalker.reset();
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163 while (repoWalker.hasNext()) {
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164 repoWalker.next();
284
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165 final Path fname = getPathPool().path(repoWalker.name());
287
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166 FileInfo f = repoWalker.file();
226
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167 if (!f.exists()) {
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168 // file coming from iterator doesn't exist.
284
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169 if (knownEntries.remove(fname)) {
226
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170 if (getDirstate().checkRemoved(fname) == null) {
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171 inspector.missing(fname);
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172 } else {
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173 inspector.removed(fname);
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174 }
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175 // do not report it as removed later
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176 if (collect != null) {
285
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177 baseRevFiles.remove(fname);
226
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178 }
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179 } else {
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180 // chances are it was known in baseRevision. We may rely
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181 // that later iteration over baseRevFiles leftovers would yield correct Removed,
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182 // but it doesn't hurt to be explicit (provided we know fname *is* inScope of the FileIterator
285
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183 if (collect != null && baseRevFiles.remove(fname)) {
226
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184 inspector.removed(fname);
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185 } else {
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186 // not sure I shall report such files (i.e. arbitrary name coming from FileIterator)
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187 // as unknown. Command-line HG aborts "system can't find the file specified"
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188 // in similar case (against wc), or just gives nothing if --change <rev> is specified.
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189 // however, as it's unlikely to get unexisting files from FileIterator, and
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190 // its better to see erroneous file status rather than not to see any (which is too easy
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191 // to overlook), I think unknown() is reasonable approach here
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192 inspector.unknown(fname);
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193 }
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194 }
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195 continue;
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196 }
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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);
58
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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
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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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
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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221 }
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222 }
284
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diff changeset
223 for (Path m : knownEntries) {
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diff changeset
224 if (!repoWalker.inScope(m)) {
226
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diff changeset
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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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
6f1b88693d48 Complete refactoring to org.tmatesoft
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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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diff changeset
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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diff changeset
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);
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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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
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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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
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
251 private void checkLocalStatusAgainstFile(Path fname, FileInfo f, HgStatusInspector inspector) {
58
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252 HgDirstate.Record r;
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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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253 if ((r = getDirstate().checkNormal(fname)) != null) {
58
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254 // either clean or modified
287
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diff changeset
255 final boolean timestampEqual = f.lastModified() == r.time, sizeEqual = r.size == f.length();
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
256 if (timestampEqual && sizeEqual) {
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
257 inspector.clean(fname);
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diff changeset
258 } else if (!sizeEqual && r.size >= 0) {
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
259 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
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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parents: 284
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)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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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parents: 157
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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parents: 117
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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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
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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parents: 275
diff changeset
278 inspector.removed(fname);
59
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diff changeset
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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diff changeset
282 }
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parents:
diff changeset
283
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 // 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
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 285
diff changeset
285 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
286 // 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
287 Nodeid nid1 = collect.nodeid(fname);
6dbbc53fc46d Use Path instead of plain String for manifest file names
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parents: 284
diff changeset
288 HgManifest.Flags flags = collect.flags(fname);
58
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diff changeset
289 HgDirstate.Record r;
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diff changeset
290 if (nid1 == null) {
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parents:
diff changeset
291 // 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
292 // 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
293 // 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
294 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
295 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
296 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
297 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
298 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
299 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
300 }
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 } 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
302 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
303 // 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
304 }
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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parents: 89
diff changeset
305 } 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
306 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
307 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
308 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
309 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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parents:
diff changeset
310 }
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 // 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
312 } 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:
diff changeset
313 // removed: removed file was not known at the time of baseRevision, and we should not report it as removed
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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parents:
diff changeset
315 }
226
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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diff changeset
316 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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parents:
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317 } else {
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318 // was known; check whether clean or modified
285
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319 Nodeid nidFromDirstate = getDirstateParentManifest().nodeid(fname);
282
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320 if ((r = getDirstate().checkNormal(fname)) != null && nid1.equals(nidFromDirstate)) {
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321 // regular file, was the same up to WC initialization. Check if was modified since, and, if not, report right away
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322 // same code as in #checkLocalStatusAgainstFile
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323 final boolean timestampEqual = f.lastModified() == r.time, sizeEqual = r.size == f.length();
282
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324 boolean handled = false;
280
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325 if (timestampEqual && sizeEqual) {
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326 inspector.clean(fname);
282
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327 handled = true;
280
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328 } else if (!sizeEqual && r.size >= 0) {
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329 inspector.modified(fname);
282
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330 handled = true;
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331 } else if (!todoCheckFlagsEqual(f, flags)) {
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332 // seems like flags have changed, no reason to check content further
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333 inspector.modified(fname);
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334 handled = true;
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335 }
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336 if (handled) {
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337 baseRevNames.remove(fname); // consumed, processed, handled.
280
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338 return;
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339 }
282
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340 // otherwise, shall check actual content (size not the same, or unknown (-1 or -2), or timestamp is different,
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341 // or nodeid in dirstate is different, but local change might have brought it back to baseRevision state)
280
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342 // FALL THROUGH
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343 }
282
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344 if (r != null || (r = getDirstate().checkMerged(fname)) != null || (r = getDirstate().checkAdded(fname)) != null) {
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345 // check actual content to see actual changes
280
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346 // 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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347 // either clean or modified
282
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348 HgDataFile fileNode = repo.getFileNode(fname);
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349 if (areTheSame(f, fileNode, nid1)) {
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350 inspector.clean(fname);
58
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351 } else {
282
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352 inspector.modified(fname);
58
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353 }
285
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354 baseRevNames.remove(fname); // consumed, processed, handled.
226
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355 } else if (getDirstate().checkRemoved(fname) != null) {
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356 // was known, and now marked as removed, report it right away, do not rely on baseRevNames processing later
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357 inspector.removed(fname);
285
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358 baseRevNames.remove(fname); // consumed, processed, handled.
58
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359 }
226
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360 // only those left in baseRevNames after processing are reported as removed
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361 }
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362
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363 // 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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364 // 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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365 // 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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366 // changeset nodeid + hash(actual content) => entry (Nodeid) in the next Manifest
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367 // 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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368 // The question is whether original Hg treats this case (same content, different parents and hence nodeids) as 'modified' or 'clean'
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369 }
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370
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371 private boolean areTheSame(FileInfo f, HgDataFile dataFile, Nodeid revision) {
157
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372 // XXX consider adding HgDataDile.compare(File/byte[]/whatever) operation to optimize comparison
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373 ByteArrayChannel bac = new ByteArrayChannel();
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374 boolean ioFailed = false;
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375 try {
282
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376 int localRevision = dataFile.getLocalRevision(revision);
157
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377 // need content with metadata striped off - although theoretically chances are metadata may be different,
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378 // WC doesn't have it anyway
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379 dataFile.content(localRevision, bac);
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380 } catch (CancelledException ex) {
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381 // silently ignore - can't happen, ByteArrayChannel is not cancellable
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382 } catch (HgException ex) {
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383 ioFailed = true;
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384 }
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385 return !ioFailed && areTheSame(f, bac.toArray(), dataFile.getPath());
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386 }
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387
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388 private boolean areTheSame(FileInfo f, final byte[] data, Path p) {
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389 ReadableByteChannel is = null;
117
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390 try {
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391 try {
287
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392 is = f.newInputChannel();
226
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393 ByteBuffer fb = ByteBuffer.allocate(min(1 + data.length * 2 /*to fit couple of lines appended; never zero*/, 8192));
219
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394 class Check implements ByteChannel {
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395 final boolean debug = false; // XXX may want to add global variable to allow clients to turn
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396 boolean sameSoFar = true;
117
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diff changeset
397 int x = 0;
219
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398
148
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399 public int write(ByteBuffer buffer) {
117
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400 for (int i = buffer.remaining(); i > 0; i--, x++) {
219
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diff changeset
401 if (x >= data.length /*file has been appended*/ || data[x] != buffer.get()) {
120
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402 if (debug) {
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403 byte[] xx = new byte[15];
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404 if (buffer.position() > 5) {
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405 buffer.position(buffer.position() - 5);
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406 }
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407 buffer.get(xx);
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408 System.out.print("expected >>" + new String(data, max(0, x - 4), 20) + "<< but got >>");
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409 System.out.println(new String(xx) + "<<");
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410 }
219
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411 sameSoFar = false;
117
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diff changeset
412 break;
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diff changeset
413 }
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diff changeset
414 }
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415 buffer.position(buffer.limit()); // mark as read
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diff changeset
416 return buffer.limit();
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417 }
219
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418
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419 public boolean sameSoFar() {
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420 return sameSoFar;
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421 }
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422 public boolean ultimatelyTheSame() {
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423 return sameSoFar && x == data.length;
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424 }
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425 };
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426 Check check = new Check();
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427 FilterByteChannel filters = new FilterByteChannel(check, repo.getFiltersFromWorkingDirToRepo(p));
287
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428 while (is.read(fb) != -1 && check.sameSoFar()) {
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429 fb.flip();
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430 filters.write(fb);
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431 fb.compact();
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432 }
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433 return check.ultimatelyTheSame();
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434 } catch (IOException ex) {
287
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435 ex.printStackTrace(); // log warn
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436 } finally {
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437 if (is != null) {
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438 is.close();
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439 }
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440 }
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441 } catch (/*TODO typed*/Exception ex) {
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442 ex.printStackTrace();
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443 }
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444 return false;
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445 }
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446
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447 private static boolean todoCheckFlagsEqual(FileInfo f, HgManifest.Flags originalManifestFlags) {
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448 // FIXME implement
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449 return true;
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450 }
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451
229
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452 /**
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453 * 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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454 * traverse only relevant part of working copy on the filesystem.
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455 *
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456 * @param hgRepo repository
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457 * @param paths repository-relative files and/or directories. Directories are processed recursively.
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458 *
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459 * @return new instance of {@link HgWorkingCopyStatusCollector}, ready to {@link #walk(int, HgStatusInspector) walk} associated working copy
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460 */
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461 @Experimental(reason="Provisional API")
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462 public static HgWorkingCopyStatusCollector create(HgRepository hgRepo, Path... paths) {
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463 ArrayList<Path> f = new ArrayList<Path>(5);
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464 ArrayList<Path> d = new ArrayList<Path>(5);
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465 for (Path p : paths) {
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466 if (p.isDirectory()) {
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467 d.add(p);
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468 } else {
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469 f.add(p);
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470 }
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471 }
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472 // final Path[] dirs = f.toArray(new Path[d.size()]);
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473 if (d.isEmpty()) {
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474 final Path[] files = f.toArray(new Path[f.size()]);
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475 FileIterator fi = new FileListIterator(hgRepo.getWorkingDir(), files);
229
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476 return new HgWorkingCopyStatusCollector(hgRepo, fi);
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477 }
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478 //
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479
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480 //FileIterator fi = file.isDirectory() ? new DirFileIterator(hgRepo, file) : new FileListIterator(, file);
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481 FileIterator fi = new HgInternals(hgRepo).createWorkingDirWalker(new PathScope(true, paths));
226
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482 return new HgWorkingCopyStatusCollector(hgRepo, fi);
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483 }
229
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484
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485 /**
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486 * Configure collector object to calculate status for matching files only.
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487 * This method may be less effective than explicit list of files as it iterates over whole repository
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488 * (thus supplied matcher doesn't need to care if directories to files in question are also in scope,
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489 * see {@link FileWalker#FileWalker(File, Path.Source, Path.Matcher)})
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490 *
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491 * @return new instance of {@link HgWorkingCopyStatusCollector}, ready to {@link #walk(int, HgStatusInspector) walk} associated working copy
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492 */
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493 @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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494 public static HgWorkingCopyStatusCollector create(HgRepository hgRepo, Path.Matcher scope) {
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495 FileIterator w = new HgInternals(hgRepo).createWorkingDirWalker(null);
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496 FileIterator wf = (scope == null || scope instanceof Path.Matcher.Any) ? w : new FileIteratorFilter(w, scope);
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497 // the reason I need to iterate over full repo and apply filter is that I have no idea whatsoever about
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498 // 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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499 // to the file unless matcher would also explicitly include "a/", "a/b/" in scope. Since I can't rely
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500 // 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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501 // correct matcher from Path is much like what PathScope does, and can be accessed directly with #create(repo, Path...)
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502 // method above/
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503 return new HgWorkingCopyStatusCollector(hgRepo, wf);
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504 }
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505
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506 private static class FileListIterator implements FileIterator {
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507 private final File dir;
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508 private final Path[] paths;
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509 private int index;
287
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510 private RegularFileInfo nextFile;
226
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511
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512 public FileListIterator(File startDir, Path... files) {
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513 dir = startDir;
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514 paths = files;
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515 reset();
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516 }
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517
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518 public void reset() {
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519 index = -1;
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520 nextFile = new RegularFileInfo();
226
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521 }
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522
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523 public boolean hasNext() {
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524 return paths.length > 0 && index < paths.length-1;
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525 }
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526
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527 public void next() {
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528 index++;
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529 if (index == paths.length) {
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530 throw new NoSuchElementException();
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531 }
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532 nextFile.init(new File(dir, paths[index].toString()));
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533 }
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534
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535 public Path name() {
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536 return paths[index];
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537 }
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538
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539 public FileInfo file() {
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540 return nextFile;
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541 }
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542
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543 public boolean inScope(Path file) {
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544 for (int i = 0; i < paths.length; i++) {
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545 if (paths[i].equals(file)) {
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546 return true;
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547 }
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548 }
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549 return false;
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550 }
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551 }
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552
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553 private static class FileIteratorFilter implements FileIterator {
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554 private final Path.Matcher filter;
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555 private final FileIterator walker;
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556 private boolean didNext = false;
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557
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558 public FileIteratorFilter(FileIterator fileWalker, Path.Matcher filterMatcher) {
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559 assert fileWalker != null;
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560 assert filterMatcher != null;
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561 filter = filterMatcher;
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562 walker = fileWalker;
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563 }
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564
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565 public void reset() {
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566 walker.reset();
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567 }
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568
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569 public boolean hasNext() {
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570 while (walker.hasNext()) {
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571 walker.next();
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572 if (filter.accept(walker.name())) {
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573 didNext = true;
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574 return true;
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575 }
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576 }
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577 return false;
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578 }
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579
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580 public void next() {
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581 if (didNext) {
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582 didNext = false;
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583 } else {
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584 if (!hasNext()) {
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585 throw new NoSuchElementException();
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586 }
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587 }
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588 }
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589
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590 public Path name() {
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591 return walker.name();
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592 }
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593
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diff changeset
594 public FileInfo file() {
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595 return walker.file();
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596 }
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597
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598 public boolean inScope(Path file) {
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599 return filter.accept(file);
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600 }
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601 }
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diff changeset
602 }