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annotate src/org/tmatesoft/hg/repo/HgWorkingCopyStatusCollector.java @ 275:6d1804fe0ed7

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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
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 25 Aug 2011 21:35:03 +0200
parents 3fbfce107f94
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();
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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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diff changeset
223 }
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224 }
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diff changeset
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
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
229 walk(baseRevision, rv);
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diff changeset
230 return rv;
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231 }
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232
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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
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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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diff changeset
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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diff changeset
246 inspector.modified(df.getPath());
180
42fe9a94b9d0 Report files as clean when no difference but timestamp found
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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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diff changeset
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
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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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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diff changeset
269 HgDirstate.Record r;
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270 if (nid1 == null) {
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diff changeset
271 // normal: added?
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272 // 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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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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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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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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diff changeset
293 // 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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diff changeset
294 return;
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diff changeset
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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diff changeset
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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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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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 }