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annotate src/org/tmatesoft/hg/repo/HgWorkingCopyStatusCollector.java @ 277:74e7493a042a

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Favor delegation over generalization
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 29 Aug 2011 23:14:59 +0200
parents 6d1804fe0ed7
children 35125450c804
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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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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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();
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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 // may be invoked few times
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106 // NOTE, use of TIP constant requires certain care. TIP here doesn't mean latest cset, but actual working copy parent.
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107 // XXX this shall be changed, though, and use of TIP throughout code shall be revised -
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108 // consider case when repository is updated to one of its previous revisions. TIP points to last change, but a lot of
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109 // commands need to work with revision that is in dirstate now.
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110 public void walk(int baseRevision, HgStatusInspector inspector) {
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111 if (HgInternals.wrongLocalRevision(baseRevision) || baseRevision == BAD_REVISION || baseRevision == WORKING_COPY) {
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112 throw new IllegalArgumentException(String.valueOf(baseRevision));
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113 }
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114 final HgIgnore hgIgnore = repo.getIgnore();
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115 TreeSet<String> knownEntries = getDirstate().all();
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116 if (baseRevision == TIP) {
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117 // WC not necessarily points to TIP, but may be result of update to any previous revision.
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118 // 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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119 Nodeid dirstateParentRev = getDirstate().parents()[0];
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120 Nodeid lastCsetRev = repo.getChangelog().getRevision(HgRepository.TIP);
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121 if (lastCsetRev.equals(dirstateParentRev)) {
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122 baseRevision = repo.getChangelog().getLastRevision();
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123 } else {
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124 // can do it right away, but explicit check above might save few cycles (unless getLocalRevision(Nodeid) is effective)
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125 baseRevision = repo.getChangelog().getLocalRevision(dirstateParentRev);
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126 }
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127 }
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128 final boolean isTipBase = baseRevision == repo.getChangelog().getLastRevision();
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129 ManifestRevision collect = null;
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130 Set<String> baseRevFiles = Collections.emptySet(); // files from base revision not affected by status calculation
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131 if (!isTipBase) {
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132 if (baseRevisionCollector != null) {
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133 collect = baseRevisionCollector.raw(baseRevision);
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134 } else {
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135 collect = new ManifestRevision(null, null);
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136 repo.getManifest().walk(baseRevision, baseRevision, collect);
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137 }
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138 baseRevFiles = new TreeSet<String>(collect.files());
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139 }
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140 if (inspector instanceof HgStatusCollector.Record) {
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141 HgStatusCollector sc = baseRevisionCollector == null ? new HgStatusCollector(repo) : baseRevisionCollector;
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142 ((HgStatusCollector.Record) inspector).init(baseRevision, BAD_REVISION, sc);
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143 }
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144 repoWalker.reset();
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145 final PathPool pp = getPathPool();
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146 while (repoWalker.hasNext()) {
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147 repoWalker.next();
226
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148 Path fname = pp.path(repoWalker.name());
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149 File f = repoWalker.file();
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150 if (!f.exists()) {
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151 // file coming from iterator doesn't exist.
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152 if (knownEntries.remove(fname.toString())) {
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153 if (getDirstate().checkRemoved(fname) == null) {
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154 inspector.missing(fname);
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155 } else {
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156 inspector.removed(fname);
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157 }
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158 // do not report it as removed later
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159 if (collect != null) {
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160 baseRevFiles.remove(fname.toString());
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161 }
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162 } else {
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163 // chances are it was known in baseRevision. We may rely
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164 // that later iteration over baseRevFiles leftovers would yield correct Removed,
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165 // but it doesn't hurt to be explicit (provided we know fname *is* inScope of the FileIterator
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166 if (collect != null && baseRevFiles.remove(fname.toString())) {
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167 inspector.removed(fname);
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168 } else {
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169 // not sure I shall report such files (i.e. arbitrary name coming from FileIterator)
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170 // as unknown. Command-line HG aborts "system can't find the file specified"
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171 // in similar case (against wc), or just gives nothing if --change <rev> is specified.
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172 // however, as it's unlikely to get unexisting files from FileIterator, and
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173 // its better to see erroneous file status rather than not to see any (which is too easy
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174 // to overlook), I think unknown() is reasonable approach here
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175 inspector.unknown(fname);
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176 }
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177 }
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178 continue;
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179 }
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180 assert f.isFile();
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181 if (knownEntries.remove(fname.toString())) {
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182 // tracked file.
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183 // modified, added, removed, clean
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184 if (collect != null) { // need to check against base revision, not FS file
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185 checkLocalStatusAgainstBaseRevision(baseRevFiles, collect, baseRevision, fname, f, inspector);
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186 } else {
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187 checkLocalStatusAgainstFile(fname, f, inspector);
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188 }
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189 } else {
226
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190 if (hgIgnore.isIgnored(fname)) { // hgignore shall be consulted only for non-tracked files
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191 inspector.ignored(fname);
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192 } else {
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193 inspector.unknown(fname);
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194 }
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195 // the file is not tracked. Even if it's known at baseRevision, we don't need to remove it
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196 // from baseRevFiles, it might need to be reported as removed as well (cmdline client does
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197 // yield two statuses for the same file)
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198 }
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199 }
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200 if (collect != null) {
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201 for (String r : baseRevFiles) {
226
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202 final Path fromBase = pp.path(r);
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203 if (repoWalker.inScope(fromBase)) {
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204 inspector.removed(fromBase);
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205 }
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206 }
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207 }
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208 for (String m : knownEntries) {
226
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209 if (!repoWalker.inScope(pp.path(m))) {
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210 // do not report as missing/removed those FileIterator doesn't care about.
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211 continue;
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212 }
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213 // missing known file from a working dir
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214 if (getDirstate().checkRemoved(m) == null) {
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215 // not removed from the repository = 'deleted'
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216 inspector.missing(pp.path(m));
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217 } else {
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218 // removed from the repo
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219 // if we check against non-tip revision, do not report files that were added past that revision and now removed.
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
220 if (collect == null || baseRevFiles.contains(m)) {
93
d55d4eedfc57 Switch to Path instead of String in filenames returned by various status operations
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diff changeset
221 inspector.removed(pp.path(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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diff changeset
222 }
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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223 }
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224 }
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225 }
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
226
94
af1f3b78b918 *StatusCollector renamed to Hg*StatusCollector
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diff changeset
227 public HgStatusCollector.Record status(int baseRevision) {
af1f3b78b918 *StatusCollector renamed to Hg*StatusCollector
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diff changeset
228 HgStatusCollector.Record rv = new HgStatusCollector.Record();
58
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diff changeset
229 walk(baseRevision, rv);
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diff changeset
230 return rv;
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231 }
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232
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
233 //********************************************
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234
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235
141
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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diff changeset
236 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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237 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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238 if ((r = getDirstate().checkNormal(fname)) != null) {
58
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239 // either clean or modified
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240 if (f.lastModified() / 1000 == r.time && r.size == f.length()) {
93
d55d4eedfc57 Switch to Path instead of String in filenames returned by various status operations
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diff changeset
241 inspector.clean(getPathPool().path(fname));
58
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242 } else {
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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243 // 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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244 HgDataFile df = repo.getFileNode(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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diff changeset
245 if (!areTheSame(f, df, HgRepository.TIP)) {
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
246 inspector.modified(df.getPath());
180
42fe9a94b9d0 Report files as clean when no difference but timestamp found
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parents: 157
diff changeset
247 } else {
42fe9a94b9d0 Report files as clean when no difference but timestamp found
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diff changeset
248 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
249 }
58
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250 }
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
251 } else if ((r = getDirstate().checkAdded(fname)) != null) {
58
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252 if (r.name2 == null) {
93
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diff changeset
253 inspector.added(getPathPool().path(fname));
58
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254 } else {
93
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diff changeset
255 inspector.copied(getPathPool().path(r.name2), getPathPool().path(fname));
58
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256 }
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
257 } else if ((r = getDirstate().checkRemoved(fname)) != null) {
93
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diff changeset
258 inspector.removed(getPathPool().path(fname));
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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
259 } else if ((r = getDirstate().checkMerged(fname)) != null) {
93
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diff changeset
260 inspector.modified(getPathPool().path(fname));
58
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261 }
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262 }
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parents:
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263
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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264 // XXX refactor checkLocalStatus methods in more OO way
248
3fbfce107f94 Issue 8: Means to find out information about given file at specific changeset. Inner ManifestRevisionInspector got promoted to ManifestRevision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 246
diff changeset
265 private void checkLocalStatusAgainstBaseRevision(Set<String> baseRevNames, ManifestRevision collect, int baseRevision, Path fname, File f, HgStatusInspector inspector) {
58
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266 // fname is in the dirstate, either Normal, Added, Removed or Merged
141
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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diff changeset
267 Nodeid nid1 = collect.nodeid(fname.toString());
8248aae33f7d Adopt FileIterator moving towards WCStatusCollector parameterizing. Improved path handling, move 'em around
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diff changeset
268 String flags = collect.flags(fname.toString());
58
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269 HgDirstate.Record r;
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270 if (nid1 == null) {
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271 // normal: added?
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272 // added: not known at the time of baseRevision, shall report
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diff changeset
273 // 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
274 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
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 148
diff changeset
275 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
276 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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diff changeset
277 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
278 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
279 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
280 }
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
281 } 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
282 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
283 // FIXME report to a mediator, continue status collection
90
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diff changeset
284 }
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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parents: 89
diff changeset
285 } else if ((r = getDirstate().checkAdded(fname)) != null) {
58
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diff changeset
286 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
287 baseRevNames.remove(r.name2); // XXX surely I shall not report rename source as Removed?
226
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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parents: 219
diff changeset
288 inspector.copied(getPathPool().path(r.name2), fname);
58
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diff changeset
289 return;
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diff changeset
290 }
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diff changeset
291 // 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
292 } else if (getDirstate().checkRemoved(fname) != null) {
58
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parents:
diff changeset
293 // removed: removed file was not known at the time of baseRevision, and we should not report it as removed
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294 return;
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295 }
226
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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diff changeset
296 inspector.added(fname);
58
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297 } else {
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diff changeset
298 // was known; check whether clean or modified
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diff changeset
299 // when added - seems to be the case of a file added once again, hence need to check if content is different
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
300 if ((r = getDirstate().checkNormal(fname)) != null || (r = getDirstate().checkMerged(fname)) != null || (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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diff changeset
301 // either clean or modified
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
302 HgDataFile fileNode = repo.getFileNode(fname);
275
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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parents: 248
diff changeset
303 int lengthAtRevision;
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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diff changeset
304 try {
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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diff changeset
305 lengthAtRevision = fileNode.length(nid1);
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diff changeset
306 } catch (HgDataStreamException ex) {
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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diff changeset
307 ex.printStackTrace(); // XXX log error
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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diff changeset
308 lengthAtRevision = -1; // compare file content then
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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diff changeset
309 }
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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diff changeset
310 // XXX is it safe with respect to filters (keyword, eol) to compare lengthAtRevision (unprocessed) with size
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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diff changeset
311 // from dirstate, which I assume is size of processed data?
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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parents: 248
diff changeset
312 if (r.size != -1 && r.size /* XXX File.length() ?! */ != lengthAtRevision || flags != todoGenerateFlags(fname /*java.io.File*/)) {
226
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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parents: 219
diff changeset
313 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
314 } else {
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 // check actual content to see actual changes
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
316 if (areTheSame(f, fileNode, fileNode.getLocalRevision(nid1))) {
226
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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parents: 219
diff changeset
317 inspector.clean(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
318 } else {
226
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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parents: 219
diff changeset
319 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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320 }
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321 }
226
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322 baseRevNames.remove(fname.toString()); // consumed, processed, handled.
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323 } else if (getDirstate().checkRemoved(fname) != null) {
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324 // was known, and now marked as removed, report it right away, do not rely on baseRevNames processing later
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325 inspector.removed(fname);
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326 baseRevNames.remove(fname.toString()); // consumed, processed, handled.
58
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327 }
226
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328 // only those left in baseRevNames after processing are reported as removed
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329 }
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330
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331 // 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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332 // 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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333 // 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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334 // changeset nodeid + hash(actual content) => entry (Nodeid) in the next Manifest
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335 // 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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336 // The question is whether original Hg treats this case (same content, different parents and hence nodeids) as 'modified' or 'clean'
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337 }
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338
157
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339 private boolean areTheSame(File f, HgDataFile dataFile, int localRevision) {
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340 // XXX consider adding HgDataDile.compare(File/byte[]/whatever) operation to optimize comparison
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341 ByteArrayChannel bac = new ByteArrayChannel();
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342 boolean ioFailed = false;
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343 try {
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344 // need content with metadata striped off - although theoretically chances are metadata may be different,
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345 // WC doesn't have it anyway
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346 dataFile.content(localRevision, bac);
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347 } catch (CancelledException ex) {
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348 // silently ignore - can't happen, ByteArrayChannel is not cancellable
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349 } catch (HgException ex) {
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350 ioFailed = true;
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351 }
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352 return !ioFailed && areTheSame(f, bac.toArray(), dataFile.getPath());
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353 }
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354
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355 private boolean areTheSame(File f, final byte[] data, Path p) {
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356 FileInputStream fis = null;
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357 try {
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358 try {
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359 fis = new FileInputStream(f);
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360 FileChannel fc = fis.getChannel();
226
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361 ByteBuffer fb = ByteBuffer.allocate(min(1 + data.length * 2 /*to fit couple of lines appended; never zero*/, 8192));
219
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362 class Check implements ByteChannel {
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363 final boolean debug = false; // XXX may want to add global variable to allow clients to turn
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364 boolean sameSoFar = true;
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365 int x = 0;
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366
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367 public int write(ByteBuffer buffer) {
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368 for (int i = buffer.remaining(); i > 0; i--, x++) {
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369 if (x >= data.length /*file has been appended*/ || data[x] != buffer.get()) {
120
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370 if (debug) {
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371 byte[] xx = new byte[15];
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372 if (buffer.position() > 5) {
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373 buffer.position(buffer.position() - 5);
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374 }
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375 buffer.get(xx);
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376 System.out.print("expected >>" + new String(data, max(0, x - 4), 20) + "<< but got >>");
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377 System.out.println(new String(xx) + "<<");
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378 }
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379 sameSoFar = false;
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380 break;
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381 }
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382 }
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383 buffer.position(buffer.limit()); // mark as read
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384 return buffer.limit();
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385 }
219
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386
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387 public boolean sameSoFar() {
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388 return sameSoFar;
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389 }
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390 public boolean ultimatelyTheSame() {
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391 return sameSoFar && x == data.length;
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392 }
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393 };
219
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394 Check check = new Check();
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395 FilterByteChannel filters = new FilterByteChannel(check, repo.getFiltersFromWorkingDirToRepo(p));
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396 while (fc.read(fb) != -1 && check.sameSoFar()) {
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397 fb.flip();
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398 filters.write(fb);
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399 fb.compact();
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400 }
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401 fis.close();
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402 return check.ultimatelyTheSame();
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403 } catch (IOException ex) {
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404 if (fis != null) {
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405 fis.close();
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406 }
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407 ex.printStackTrace(); // log warn
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408 }
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409 } catch (/*TODO typed*/Exception ex) {
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410 ex.printStackTrace();
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411 }
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412 return false;
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413 }
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414
141
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415 private static String todoGenerateFlags(Path fname) {
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416 // FIXME implement
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417 return null;
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418 }
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419
229
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420 /**
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421 * 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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422 * traverse only relevant part of working copy on the filesystem.
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423 *
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424 * @param hgRepo repository
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425 * @param paths repository-relative files and/or directories. Directories are processed recursively.
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426 *
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427 * @return new instance of {@link HgWorkingCopyStatusCollector}, ready to {@link #walk(int, HgStatusInspector) walk} associated working copy
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428 */
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429 @Experimental(reason="Provisional API")
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430 public static HgWorkingCopyStatusCollector create(HgRepository hgRepo, Path... paths) {
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431 ArrayList<Path> f = new ArrayList<Path>(5);
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432 ArrayList<Path> d = new ArrayList<Path>(5);
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433 for (Path p : paths) {
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434 if (p.isDirectory()) {
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435 d.add(p);
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436 } else {
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437 f.add(p);
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438 }
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439 }
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440 // final Path[] dirs = f.toArray(new Path[d.size()]);
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441 if (d.isEmpty()) {
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442 final Path[] files = f.toArray(new Path[f.size()]);
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443 FileIterator fi = new FileListIterator(hgRepo.getWorkingDir(), files);
229
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444 return new HgWorkingCopyStatusCollector(hgRepo, fi);
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445 }
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446 //
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447
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448 //FileIterator fi = file.isDirectory() ? new DirFileIterator(hgRepo, file) : new FileListIterator(, file);
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449 FileIterator fi = new HgInternals(hgRepo).createWorkingDirWalker(new PathScope(true, paths));
226
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450 return new HgWorkingCopyStatusCollector(hgRepo, fi);
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451 }
229
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452
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453 /**
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454 * Configure collector object to calculate status for matching files only.
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455 * This method may be less effective than explicit list of files as it iterates over whole repository
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456 * (thus supplied matcher doesn't need to care if directories to files in question are also in scope,
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457 * see {@link FileWalker#FileWalker(File, Path.Source, Path.Matcher)})
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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. May add boolean strict argument for those who write smart matchers that can be used in FileWalker")
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462 public static HgWorkingCopyStatusCollector create(HgRepository hgRepo, Path.Matcher scope) {
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463 FileIterator w = new HgInternals(hgRepo).createWorkingDirWalker(null);
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464 FileIterator wf = (scope == null || scope instanceof Path.Matcher.Any) ? w : new FileIteratorFilter(w, scope);
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465 // the reason I need to iterate over full repo and apply filter is that I have no idea whatsoever about
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466 // 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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467 // to the file unless matcher would also explicitly include "a/", "a/b/" in scope. Since I can't rely
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468 // 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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469 // correct matcher from Path is much like what PathScope does, and can be accessed directly with #create(repo, Path...)
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470 // method above/
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471 return new HgWorkingCopyStatusCollector(hgRepo, wf);
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472 }
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473
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474 private static class FileListIterator implements FileIterator {
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475 private final File dir;
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476 private final Path[] paths;
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477 private int index;
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478 private File nextFile; // cache file() in case it's called more than once
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479
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480 public FileListIterator(File startDir, Path... files) {
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481 dir = startDir;
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482 paths = files;
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483 reset();
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484 }
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485
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486 public void reset() {
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487 index = -1;
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488 nextFile = null;
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489 }
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490
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491 public boolean hasNext() {
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492 return paths.length > 0 && index < paths.length-1;
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493 }
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494
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495 public void next() {
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496 index++;
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497 if (index == paths.length) {
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498 throw new NoSuchElementException();
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499 }
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500 nextFile = new File(dir, paths[index].toString());
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501 }
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502
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503 public Path name() {
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504 return paths[index];
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505 }
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506
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507 public File file() {
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508 return nextFile;
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509 }
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510
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511 public boolean inScope(Path file) {
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512 for (int i = 0; i < paths.length; i++) {
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513 if (paths[i].equals(file)) {
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514 return true;
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515 }
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516 }
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517 return false;
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518 }
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519 }
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520
229
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521 private static class FileIteratorFilter implements FileIterator {
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522 private final Path.Matcher filter;
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523 private final FileIterator walker;
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524 private boolean didNext = false;
226
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525
229
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526 public FileIteratorFilter(FileIterator fileWalker, Path.Matcher filterMatcher) {
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527 assert fileWalker != null;
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528 assert filterMatcher != null;
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529 filter = filterMatcher;
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530 walker = fileWalker;
226
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531 }
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532
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533 public void reset() {
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534 walker.reset();
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535 }
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536
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537 public boolean hasNext() {
229
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538 while (walker.hasNext()) {
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539 walker.next();
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540 if (filter.accept(walker.name())) {
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541 didNext = true;
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542 return true;
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543 }
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544 }
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545 return false;
226
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546 }
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547
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548 public void next() {
229
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549 if (didNext) {
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550 didNext = false;
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551 } else {
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552 if (!hasNext()) {
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553 throw new NoSuchElementException();
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554 }
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555 }
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556 }
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557
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558 public Path name() {
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559 return walker.name();
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560 }
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561
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562 public File file() {
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563 return walker.file();
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564 }
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565
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566 public boolean inScope(Path file) {
229
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567 return filter.accept(file);
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568 }
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569 }
58
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570 }