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annotate src/org/tmatesoft/hg/repo/HgWorkingCopyStatusCollector.java @ 375:729ba8f7d14e

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Issue 22: UnsupportedOperationException when all files are deleted in a branch
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 23 Jan 2012 16:51:34 +0100
parents 2fadf8695f8a
children 5e95b0da26f2
rev   line source
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1 /*
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2 * Copyright (c) 2011 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.repo;
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18
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19 import static java.lang.Math.max;
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20 import static java.lang.Math.min;
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21 import static org.tmatesoft.hg.repo.HgRepository.*;
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23 import java.io.File;
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24 import java.io.IOException;
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25 import java.nio.ByteBuffer;
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26 import java.nio.channels.ReadableByteChannel;
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27 import java.util.ArrayList;
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28 import java.util.Collections;
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29 import java.util.NoSuchElementException;
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30 import java.util.Set;
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31 import java.util.TreeSet;
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32
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33 import org.tmatesoft.hg.core.HgBadStateException;
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34 import org.tmatesoft.hg.core.HgException;
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35 import org.tmatesoft.hg.core.HgInvalidControlFileException;
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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.internal.Preview;
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43 import org.tmatesoft.hg.util.Adaptable;
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44 import org.tmatesoft.hg.util.ByteChannel;
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45 import org.tmatesoft.hg.util.CancelledException;
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46 import org.tmatesoft.hg.util.FileInfo;
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47 import org.tmatesoft.hg.util.FileIterator;
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48 import org.tmatesoft.hg.util.FileWalker;
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49 import org.tmatesoft.hg.util.Path;
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50 import org.tmatesoft.hg.util.PathPool;
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51 import org.tmatesoft.hg.util.PathRewrite;
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52 import org.tmatesoft.hg.util.RegularFileInfo;
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54 /**
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55 *
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56 * @author Artem Tikhomirov
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57 * @author TMate Software Ltd.
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58 */
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59 public class HgWorkingCopyStatusCollector {
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61 private final HgRepository repo;
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62 private final FileIterator repoWalker;
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63 private HgDirstate dirstate;
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64 private HgStatusCollector baseRevisionCollector;
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65 private PathPool pathPool;
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66 private ManifestRevision dirstateParentManifest;
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67
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68 /**
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69 * Collector that iterates over complete working copy
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70 */
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71 public HgWorkingCopyStatusCollector(HgRepository hgRepo) {
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72 this(hgRepo, new HgInternals(hgRepo).createWorkingDirWalker(null));
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73 }
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75 /**
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76 * Collector may analyze and report status for any arbitrary sub-tree of the working copy.
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77 * File iterator shall return names of the files relative to the repository root.
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78 *
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79 * @param hgRepo status target repository
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80 * @param workingCopyWalker iterator over files in the working copy
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81 */
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82 public HgWorkingCopyStatusCollector(HgRepository hgRepo, FileIterator workingCopyWalker) {
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83 repo = hgRepo;
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84 repoWalker = workingCopyWalker;
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85 }
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87 /**
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88 * Optionally, supply a collector instance that may cache (or have already cached) base revision
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89 * @param sc may be null
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90 */
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91 public void setBaseRevisionCollector(HgStatusCollector sc) {
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92 baseRevisionCollector = sc;
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93 }
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95 /*package-local*/ PathPool getPathPool() {
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96 if (pathPool == null) {
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97 if (baseRevisionCollector == null) {
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98 pathPool = new PathPool(new PathRewrite.Empty());
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99 } else {
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100 return baseRevisionCollector.getPathPool();
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101 }
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102 }
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103 return pathPool;
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104 }
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105
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106 public void setPathPool(PathPool pathPool) {
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107 this.pathPool = pathPool;
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108 }
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109
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110 /**
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111 * Access to directory state information this collector uses.
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112 * @return directory state holder, never <code>null</code>
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113 */
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114 public HgDirstate getDirstate() throws HgInvalidControlFileException {
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115 if (dirstate == null) {
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116 dirstate = repo.loadDirstate(getPathPool());
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117 }
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118 return dirstate;
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119 }
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120
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121 private HgDirstate getDirstateImpl() {
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122 return dirstate;
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123 }
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124
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125 private ManifestRevision getManifest(int changelogLocalRev) throws HgInvalidControlFileException {
284
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126 assert changelogLocalRev >= 0;
282
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127 ManifestRevision mr;
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128 if (baseRevisionCollector != null) {
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129 mr = baseRevisionCollector.raw(changelogLocalRev);
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130 } else {
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131 mr = new ManifestRevision(null, null);
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132 repo.getManifest().walk(changelogLocalRev, changelogLocalRev, mr);
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133 }
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134 return mr;
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135 }
354
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136
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137 private void initDirstateParentManifest() throws HgInvalidControlFileException {
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138 Nodeid dirstateParent = getDirstateImpl().parents().first();
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139 if (dirstateParent.isNull()) {
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140 dirstateParentManifest = baseRevisionCollector != null ? baseRevisionCollector.raw(-1) : HgStatusCollector.createEmptyManifestRevision();
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141 } else {
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142 int changeloRevIndex = repo.getChangelog().getRevisionIndex(dirstateParent);
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143 dirstateParentManifest = getManifest(changeloRevIndex);
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144 }
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145 }
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146
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147 // WC not necessarily points to TIP, but may be result of update to any previous revision.
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148 // In such case, we need to compare local files not to their TIP content, but to specific version at the time of selected revision
282
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149 private ManifestRevision getDirstateParentManifest() {
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150 return dirstateParentManifest;
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151 }
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152
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153 // may be invoked few times, TIP or WORKING_COPY indicate comparison shall be run against working copy parent
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154 // NOTE, use of TIP constant requires certain care. TIP here doesn't mean latest cset, but actual working copy parent.
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155 public void walk(int baseRevision, HgStatusInspector inspector) throws HgInvalidControlFileException, IOException {
367
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156 if (HgInternals.wrongRevisionIndex(baseRevision) || baseRevision == BAD_REVISION) {
218
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157 throw new IllegalArgumentException(String.valueOf(baseRevision));
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158 }
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159 if (getDirstateImpl() == null) {
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160 getDirstate();
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161 }
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162 if (getDirstateParentManifest() == null) {
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163 initDirstateParentManifest();
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164 }
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165 ManifestRevision collect = null; // non null indicates we compare against base revision
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166 Set<Path> baseRevFiles = Collections.emptySet(); // files from base revision not affected by status calculation
282
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167 if (baseRevision != TIP && baseRevision != WORKING_COPY) {
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168 collect = getManifest(baseRevision);
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169 baseRevFiles = new TreeSet<Path>(collect.files());
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170 }
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171 if (inspector instanceof HgStatusCollector.Record) {
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172 HgStatusCollector sc = baseRevisionCollector == null ? new HgStatusCollector(repo) : baseRevisionCollector;
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173 // nodeidAfterChange(dirstate's parent) doesn't make too much sense,
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174 // because the change might be actually in working copy. Nevertheless,
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175 // as long as no nodeids can be provided for WC, seems reasonable to report
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176 // latest known nodeid change (although at the moment this is not used and
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177 // is done mostly not to leave stale initialization in the Record)
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178 int rev1,rev2 = getDirstateParentManifest().changesetLocalRev();
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179 if (baseRevision == TIP || baseRevision == WORKING_COPY) {
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180 rev1 = rev2 - 1; // just use revision prior to dirstate's parent
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181 } else {
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182 rev1 = baseRevision;
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183 }
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184 ((HgStatusCollector.Record) inspector).init(rev1, rev2, sc);
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185 }
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186 final HgIgnore hgIgnore = repo.getIgnore();
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187 repoWalker.reset();
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188 TreeSet<Path> processed = new TreeSet<Path>(); // names of files we handled as they known to Dirstate (not FileIterator)
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189 final HgDirstate ds = getDirstateImpl();
293
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190 TreeSet<Path> knownEntries = ds.all(); // here just to get dirstate initialized
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191 while (repoWalker.hasNext()) {
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192 repoWalker.next();
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193 final Path fname = getPathPool().path(repoWalker.name());
287
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194 FileInfo f = repoWalker.file();
293
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195 Path knownInDirstate;
226
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196 if (!f.exists()) {
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197 // file coming from iterator doesn't exist.
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198 if ((knownInDirstate = ds.known(fname)) != null) {
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199 // found in dirstate
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200 processed.add(knownInDirstate);
294
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201 if (ds.checkRemoved(knownInDirstate) == null) {
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202 inspector.missing(knownInDirstate);
226
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203 } else {
294
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204 inspector.removed(knownInDirstate);
226
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205 }
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206 // do not report it as removed later
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207 if (collect != null) {
294
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208 baseRevFiles.remove(knownInDirstate);
226
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209 }
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210 } else {
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211 // chances are it was known in baseRevision. We may rely
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212 // that later iteration over baseRevFiles leftovers would yield correct Removed,
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213 // but it doesn't hurt to be explicit (provided we know fname *is* inScope of the FileIterator
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214 if (collect != null && baseRevFiles.remove(fname)) {
226
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215 inspector.removed(fname);
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216 } else {
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217 // not sure I shall report such files (i.e. arbitrary name coming from FileIterator)
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parents: 219
diff changeset
218 // as unknown. Command-line HG aborts "system can't find the file specified"
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parents: 219
diff changeset
219 // in similar case (against wc), or just gives nothing if --change <rev> is specified.
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diff changeset
220 // however, as it's unlikely to get unexisting files from FileIterator, and
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diff changeset
221 // its better to see erroneous file status rather than not to see any (which is too easy
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diff changeset
222 // to overlook), I think unknown() is reasonable approach here
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diff changeset
223 inspector.unknown(fname);
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diff changeset
224 }
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diff changeset
225 }
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diff changeset
226 continue;
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diff changeset
227 }
293
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diff changeset
228 if ((knownInDirstate = ds.known(fname)) != null) {
226
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diff changeset
229 // tracked file.
58
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230 // modified, added, removed, clean
293
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diff changeset
231 processed.add(knownInDirstate);
58
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diff changeset
232 if (collect != null) { // need to check against base revision, not FS file
294
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diff changeset
233 checkLocalStatusAgainstBaseRevision(baseRevFiles, collect, baseRevision, knownInDirstate, f, inspector);
58
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234 } else {
294
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diff changeset
235 checkLocalStatusAgainstFile(knownInDirstate, f, inspector);
58
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236 }
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237 } else {
226
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diff changeset
238 if (hgIgnore.isIgnored(fname)) { // hgignore shall be consulted only for non-tracked files
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239 inspector.ignored(fname);
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240 } else {
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diff changeset
241 inspector.unknown(fname);
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242 }
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243 // the file is not tracked. Even if it's known at baseRevision, we don't need to remove it
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244 // from baseRevFiles, it might need to be reported as removed as well (cmdline client does
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245 // yield two statuses for the same file)
58
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246 }
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247 }
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248 if (collect != null) {
285
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diff changeset
249 for (Path fromBase : baseRevFiles) {
226
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250 if (repoWalker.inScope(fromBase)) {
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251 inspector.removed(fromBase);
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252 }
58
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253 }
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254 }
293
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255 knownEntries.removeAll(processed);
284
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256 for (Path m : knownEntries) {
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257 if (!repoWalker.inScope(m)) {
226
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258 // do not report as missing/removed those FileIterator doesn't care about.
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diff changeset
259 continue;
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diff changeset
260 }
74
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
261 // missing known file from a working dir
293
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diff changeset
262 if (ds.checkRemoved(m) == null) {
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diff changeset
263 // not removed from the repository = 'deleted'
284
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264 inspector.missing(m);
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diff changeset
265 } else {
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diff changeset
266 // removed from the repo
76
658fa6b3a371 Fixed a defect when a file added and removed past some revision was reported as R for status against that rev
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diff changeset
267 // if we check against non-tip revision, do not report files that were added past that revision and now removed.
285
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diff changeset
268 if (collect == null || baseRevFiles.contains(m)) {
284
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diff changeset
269 inspector.removed(m);
76
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diff changeset
270 }
58
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271 }
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272 }
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273 }
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parents:
diff changeset
274
362
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diff changeset
275 public HgStatusCollector.Record status(int baseRevision) throws HgInvalidControlFileException, IOException {
94
af1f3b78b918 *StatusCollector renamed to Hg*StatusCollector
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diff changeset
276 HgStatusCollector.Record rv = new HgStatusCollector.Record();
58
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277 walk(baseRevision, rv);
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278 return rv;
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279 }
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280
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281 //********************************************
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282
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283
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
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diff changeset
284 private void checkLocalStatusAgainstFile(Path fname, FileInfo f, HgStatusInspector inspector) {
58
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285 HgDirstate.Record r;
348
a0864b2892cd Expose errors reading mercurial control files with exception
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diff changeset
286 if ((r = getDirstateImpl().checkNormal(fname)) != null) {
58
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287 // either clean or modified
290
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parents: 287
diff changeset
288 final boolean timestampEqual = f.lastModified() == r.modificationTime(), sizeEqual = r.size() == f.length();
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
289 if (timestampEqual && sizeEqual) {
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diff changeset
290 inspector.clean(fname);
290
8faad08c709b Expose dirstate to allow pre-configuration of FileIterators for status collection in particular
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diff changeset
291 } else if (!sizeEqual && r.size() >= 0) {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
292 inspector.modified(fname);
58
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diff changeset
293 } else {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
294 // size is the same or unknown, and, perhaps, different timestamp
120
b19f0ac5ee62 Check against working copy shall expect non-persistent modifications done by filters and not report such files as modified
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parents: 117
diff changeset
295 // check actual content to avoid false modified files
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diff changeset
296 HgDataFile df = repo.getFileNode(fname);
337
f377f833b780 Issue 17: temporary code to nail down the problem
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parents: 334
diff changeset
297 if (!df.exists()) {
f377f833b780 Issue 17: temporary code to nail down the problem
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diff changeset
298 String msg = String.format("File %s known as normal in dirstate (%d, %d), doesn't exist at %s", fname, r.modificationTime(), r.size(), repo.getStoragePath(df));
f377f833b780 Issue 17: temporary code to nail down the problem
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diff changeset
299 throw new HgBadStateException(msg);
f377f833b780 Issue 17: temporary code to nail down the problem
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parents: 334
diff changeset
300 }
285
6dbbc53fc46d Use Path instead of plain String for manifest file names
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diff changeset
301 Nodeid rev = getDirstateParentManifest().nodeid(fname);
314
fb74133d2025 Issue 14: NPE for merged dirstate and a file missed in dirstate's first parent
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parents: 295
diff changeset
302 // rev might be null here if fname comes to dirstate as a result of a merge operation
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parents: 295
diff changeset
303 // where one of the parents (first parent) had no fname file, but second parent had.
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parents: 295
diff changeset
304 // E.g. fork revision 3, revision 4 gets .hgtags, few modifications and merge(3,12)
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parents: 295
diff changeset
305 // see Issue 14 for details
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parents: 295
diff changeset
306 if (rev == null || !areTheSame(f, df, rev)) {
120
b19f0ac5ee62 Check against working copy shall expect non-persistent modifications done by filters and not report such files as modified
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parents: 117
diff changeset
307 inspector.modified(df.getPath());
180
42fe9a94b9d0 Report files as clean when no difference but timestamp found
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parents: 157
diff changeset
308 } else {
42fe9a94b9d0 Report files as clean when no difference but timestamp found
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diff changeset
309 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
310 }
58
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diff changeset
311 }
348
a0864b2892cd Expose errors reading mercurial control files with exception
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diff changeset
312 } else if ((r = getDirstateImpl().checkAdded(fname)) != null) {
290
8faad08c709b Expose dirstate to allow pre-configuration of FileIterators for status collection in particular
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diff changeset
313 if (r.copySource() == null) {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
314 inspector.added(fname);
58
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diff changeset
315 } else {
290
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diff changeset
316 inspector.copied(r.copySource(), fname);
58
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diff changeset
317 }
348
a0864b2892cd Expose errors reading mercurial control files with exception
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diff changeset
318 } else if ((r = getDirstateImpl().checkRemoved(fname)) != null) {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
319 inspector.removed(fname);
348
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diff changeset
320 } else if ((r = getDirstateImpl().checkMerged(fname)) != null) {
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
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diff changeset
321 inspector.modified(fname);
58
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322 }
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diff changeset
323 }
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diff changeset
324
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
325 // XXX refactor checkLocalStatus methods in more OO way
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
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parents: 285
diff changeset
326 private void checkLocalStatusAgainstBaseRevision(Set<Path> baseRevNames, ManifestRevision collect, int baseRevision, Path fname, FileInfo f, HgStatusInspector inspector) {
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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diff changeset
327 // fname is in the dirstate, either Normal, Added, Removed or Merged
285
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328 Nodeid nid1 = collect.nodeid(fname);
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329 HgManifest.Flags flags = collect.flags(fname);
58
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330 HgDirstate.Record r;
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331 if (nid1 == null) {
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332 // normal: added?
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333 // added: not known at the time of baseRevision, shall report
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334 // merged: was not known, report as added?
348
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335 if ((r = getDirstateImpl().checkNormal(fname)) != null) {
157
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336 try {
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337 Path origin = HgStatusCollector.getOriginIfCopy(repo, fname, baseRevNames, baseRevision);
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338 if (origin != null) {
226
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339 inspector.copied(getPathPool().path(origin), fname);
157
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340 return;
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341 }
354
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342 } catch (HgException ex) {
360
150500515714 Report non-critical errors during status operation to handler/inspector
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343 // report failure and continue status collection
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344 inspector.invalid(fname, ex);
90
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345 }
348
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346 } else if ((r = getDirstateImpl().checkAdded(fname)) != null) {
290
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347 if (r.copySource() != null && baseRevNames.contains(r.copySource())) {
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348 baseRevNames.remove(r.copySource()); // XXX surely I shall not report rename source as Removed?
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349 inspector.copied(r.copySource(), fname);
58
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350 return;
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351 }
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352 // fall-through, report as added
348
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353 } else if (getDirstateImpl().checkRemoved(fname) != null) {
58
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354 // removed: removed file was not known at the time of baseRevision, and we should not report it as removed
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355 return;
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356 }
226
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357 inspector.added(fname);
58
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358 } else {
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359 // was known; check whether clean or modified
285
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360 Nodeid nidFromDirstate = getDirstateParentManifest().nodeid(fname);
348
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361 if ((r = getDirstateImpl().checkNormal(fname)) != null && nid1.equals(nidFromDirstate)) {
282
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362 // regular file, was the same up to WC initialization. Check if was modified since, and, if not, report right away
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363 // same code as in #checkLocalStatusAgainstFile
290
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364 final boolean timestampEqual = f.lastModified() == r.modificationTime(), sizeEqual = r.size() == f.length();
282
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365 boolean handled = false;
280
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366 if (timestampEqual && sizeEqual) {
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367 inspector.clean(fname);
282
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368 handled = true;
290
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369 } else if (!sizeEqual && r.size() >= 0) {
280
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370 inspector.modified(fname);
282
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371 handled = true;
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372 } else if (!todoCheckFlagsEqual(f, flags)) {
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373 // seems like flags have changed, no reason to check content further
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374 inspector.modified(fname);
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375 handled = true;
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376 }
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diff changeset
377 if (handled) {
285
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diff changeset
378 baseRevNames.remove(fname); // consumed, processed, handled.
280
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diff changeset
379 return;
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diff changeset
380 }
282
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diff changeset
381 // otherwise, shall check actual content (size not the same, or unknown (-1 or -2), or timestamp is different,
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diff changeset
382 // or nodeid in dirstate is different, but local change might have brought it back to baseRevision state)
280
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383 // FALL THROUGH
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diff changeset
384 }
348
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diff changeset
385 if (r != null || (r = getDirstateImpl().checkMerged(fname)) != null || (r = getDirstateImpl().checkAdded(fname)) != null) {
282
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diff changeset
386 // check actual content to see actual changes
280
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diff changeset
387 // when added - seems to be the case of a file added once again, hence need to check if content is different
58
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388 // either clean or modified
282
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diff changeset
389 HgDataFile fileNode = repo.getFileNode(fname);
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diff changeset
390 if (areTheSame(f, fileNode, nid1)) {
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diff changeset
391 inspector.clean(fname);
58
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392 } else {
282
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393 inspector.modified(fname);
58
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394 }
285
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diff changeset
395 baseRevNames.remove(fname); // consumed, processed, handled.
348
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396 } else if (getDirstateImpl().checkRemoved(fname) != null) {
226
26ad7827a62d Support status query for a single file or a subdirectory of a repository
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diff changeset
397 // was known, and now marked as removed, report it right away, do not rely on baseRevNames processing later
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diff changeset
398 inspector.removed(fname);
285
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diff changeset
399 baseRevNames.remove(fname); // consumed, processed, handled.
58
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400 }
226
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diff changeset
401 // only those left in baseRevNames after processing are reported as removed
58
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402 }
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parents:
diff changeset
403
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
404 // 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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405 // 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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diff changeset
406 // 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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407 // changeset nodeid + hash(actual content) => entry (Nodeid) in the next Manifest
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diff changeset
408 // 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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diff changeset
409 // The question is whether original Hg treats this case (same content, different parents and hence nodeids) as 'modified' or 'clean'
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410 }
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diff changeset
411
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
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diff changeset
412 private boolean areTheSame(FileInfo f, HgDataFile dataFile, Nodeid revision) {
157
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diff changeset
413 // XXX consider adding HgDataDile.compare(File/byte[]/whatever) operation to optimize comparison
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diff changeset
414 ByteArrayChannel bac = new ByteArrayChannel();
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
415 boolean ioFailed = false;
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
416 try {
367
2fadf8695f8a Use 'revision index' instead of the vague 'local revision number' concept in the API
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diff changeset
417 int fileRevisionIndex = dataFile.getRevisionIndex(revision);
157
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418 // need content with metadata striped off - although theoretically chances are metadata may be different,
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419 // WC doesn't have it anyway
367
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diff changeset
420 dataFile.content(fileRevisionIndex, bac);
157
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diff changeset
421 } catch (CancelledException 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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422 // silently ignore - can't happen, ByteArrayChannel is not cancellable
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423 } catch (HgException ex) {
323
4c7e3ba67213 Exception when analyzing metadata of an empty renamed file
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diff changeset
424 repo.getContext().getLog().warn(getClass(), ex, null);
157
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diff changeset
425 ioFailed = true;
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
426 }
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
427 return !ioFailed && areTheSame(f, bac.toArray(), dataFile.getPath());
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
428 }
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
429
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
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parents: 285
diff changeset
430 private boolean areTheSame(FileInfo f, final byte[] data, Path p) {
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
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parents: 285
diff changeset
431 ReadableByteChannel is = null;
295
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diff changeset
432 class Check implements ByteChannel {
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diff changeset
433 final boolean debug = repo.getContext().getLog().isDebug();
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diff changeset
434 boolean sameSoFar = true;
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diff changeset
435 int x = 0;
219
d63583b47bfa ArrayIndexOutOfBoundsException when file appended. Erroneous 'areTheSame' when trailing were deleted.
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parents: 218
diff changeset
436
295
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diff changeset
437 public int write(ByteBuffer buffer) {
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diff changeset
438 for (int i = buffer.remaining(); i > 0; i--, x++) {
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parents: 294
diff changeset
439 if (x >= data.length /*file has been appended*/ || data[x] != buffer.get()) {
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diff changeset
440 if (debug) {
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diff changeset
441 byte[] xx = new byte[15];
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diff changeset
442 if (buffer.position() > 5) {
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diff changeset
443 buffer.position(buffer.position() - 5);
117
6c0be854d149 Enable filters for status operation (ToRepo case)
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parents: 102
diff changeset
444 }
334
15e1961719f2 Investigate sporadic BufferUnderflowException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 323
diff changeset
445 buffer.get(xx, 0, min(xx.length, i-1 /*-1 for the one potentially read at buffer.get in if() */));
15e1961719f2 Investigate sporadic BufferUnderflowException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 323
diff changeset
446 String exp;
15e1961719f2 Investigate sporadic BufferUnderflowException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 323
diff changeset
447 if (x < data.length) {
15e1961719f2 Investigate sporadic BufferUnderflowException
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parents: 323
diff changeset
448 exp = new String(data, max(0, x - 4), min(data.length - x, 20));
15e1961719f2 Investigate sporadic BufferUnderflowException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 323
diff changeset
449 } else {
15e1961719f2 Investigate sporadic BufferUnderflowException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 323
diff changeset
450 int offset = max(0, x - 4);
15e1961719f2 Investigate sporadic BufferUnderflowException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 323
diff changeset
451 exp = new String(data, offset, min(data.length - offset, 20));
15e1961719f2 Investigate sporadic BufferUnderflowException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 323
diff changeset
452 }
15e1961719f2 Investigate sporadic BufferUnderflowException
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 323
diff changeset
453 repo.getContext().getLog().debug(getClass(), "expected >>%s<< but got >>%s<<", exp, new String(xx));
117
6c0be854d149 Enable filters for status operation (ToRepo case)
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parents: 102
diff changeset
454 }
295
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diff changeset
455 sameSoFar = false;
981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities
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diff changeset
456 break;
219
d63583b47bfa ArrayIndexOutOfBoundsException when file appended. Erroneous 'areTheSame' when trailing were deleted.
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 218
diff changeset
457 }
117
6c0be854d149 Enable filters for status operation (ToRepo case)
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parents: 102
diff changeset
458 }
295
981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities
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diff changeset
459 buffer.position(buffer.limit()); // mark as read
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diff changeset
460 return buffer.limit();
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parents: 294
diff changeset
461 }
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diff changeset
462
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diff changeset
463 public boolean sameSoFar() {
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diff changeset
464 return sameSoFar;
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parents: 294
diff changeset
465 }
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diff changeset
466 public boolean ultimatelyTheSame() {
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467 return sameSoFar && x == data.length;
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diff changeset
468 }
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diff changeset
469 };
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diff changeset
470 Check check = new Check();
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parents: 294
diff changeset
471 try {
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diff changeset
472 is = f.newInputChannel();
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diff changeset
473 ByteBuffer fb = ByteBuffer.allocate(min(1 + data.length * 2 /*to fit couple of lines appended; never zero*/, 8192));
981f9f50bb6c Issue 11: Error log facility. SessionContext to share common facilities
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diff changeset
474 FilterByteChannel filters = new FilterByteChannel(check, repo.getFiltersFromWorkingDirToRepo(p));
356
91d75e1bac9f Consistent approach to deal with adaptable objects. Give adaptable precedence over instanceof to allow conditional response when classes do implement desired interface
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 355
diff changeset
475 Preview preview = Adaptable.Factory.getAdapter(filters, Preview.class, null);
355
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
476 if (preview != null) {
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
477 while (is.read(fb) != -1) {
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
478 fb.flip();
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
479 preview.preview(fb);
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
480 fb.clear();
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
481 }
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
482 // reset channel to read once again
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
483 try {
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
484 is.close();
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
485 } catch (IOException ex) {
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
486 repo.getContext().getLog().info(getClass(), ex, null);
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
487 }
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
488 is = f.newInputChannel();
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
489 fb.clear();
f2c11fe7f3e9 Newline filter shall respect whole stream when deciding whether to process line terminators, hence added stream preview functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
490 }
295
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diff changeset
491 while (is.read(fb) != -1 && check.sameSoFar()) {
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diff changeset
492 fb.flip();
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diff changeset
493 filters.write(fb);
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diff changeset
494 fb.compact();
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parents: 294
diff changeset
495 }
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diff changeset
496 return check.ultimatelyTheSame();
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diff changeset
497 } catch (CancelledException ex) {
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parents: 294
diff changeset
498 repo.getContext().getLog().warn(getClass(), ex, "Unexpected cancellation");
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diff changeset
499 return check.ultimatelyTheSame();
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diff changeset
500 } catch (IOException ex) {
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diff changeset
501 repo.getContext().getLog().warn(getClass(), ex, null);
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parents: 294
diff changeset
502 } finally {
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diff changeset
503 if (is != null) {
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parents: 294
diff changeset
504 try {
287
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parents: 285
diff changeset
505 is.close();
295
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diff changeset
506 } catch (IOException ex) {
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diff changeset
507 repo.getContext().getLog().info(getClass(), ex, null);
117
6c0be854d149 Enable filters for status operation (ToRepo case)
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parents: 102
diff changeset
508 }
6c0be854d149 Enable filters for status operation (ToRepo case)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 102
diff changeset
509 }
6c0be854d149 Enable filters for status operation (ToRepo case)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 102
diff changeset
510 }
6c0be854d149 Enable filters for status operation (ToRepo case)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 102
diff changeset
511 return false;
6c0be854d149 Enable filters for status operation (ToRepo case)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 102
diff changeset
512 }
6c0be854d149 Enable filters for status operation (ToRepo case)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 102
diff changeset
513
287
ed6b74a58c66 Use FileInfo abstraction with necessary subset of File functionality instead of File to facilitate other effective file system iterators
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 285
diff changeset
514 private static boolean todoCheckFlagsEqual(FileInfo f, HgManifest.Flags originalManifestFlags) {
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
515 // FIXME implement
280
35125450c804 Erroneous and slow status for working copies based on non-tip revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 275
diff changeset
516 return true;
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
517 }
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
518
229
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parents: 226
diff changeset
519 /**
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
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diff changeset
520 * Configure status collector to consider only subset of a working copy tree. Tries to be as effective as possible, and to
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
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parents: 226
diff changeset
521 * traverse only relevant part of working copy on the filesystem.
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parents: 226
diff changeset
522 *
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
523 * @param hgRepo repository
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diff changeset
524 * @param paths repository-relative files and/or directories. Directories are processed recursively.
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diff changeset
525 *
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
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diff changeset
526 * @return new instance of {@link HgWorkingCopyStatusCollector}, ready to {@link #walk(int, HgStatusInspector) walk} associated working copy
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diff changeset
527 */
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diff changeset
528 @Experimental(reason="Provisional API")
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parents: 226
diff changeset
529 public static HgWorkingCopyStatusCollector create(HgRepository hgRepo, Path... paths) {
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
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diff changeset
530 ArrayList<Path> f = new ArrayList<Path>(5);
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parents: 226
diff changeset
531 ArrayList<Path> d = new ArrayList<Path>(5);
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parents: 226
diff changeset
532 for (Path p : paths) {
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parents: 226
diff changeset
533 if (p.isDirectory()) {
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
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parents: 226
diff changeset
534 d.add(p);
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
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parents: 226
diff changeset
535 } else {
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
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diff changeset
536 f.add(p);
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
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parents: 226
diff changeset
537 }
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 226
diff changeset
538 }
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
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parents: 226
diff changeset
539 // final Path[] dirs = f.toArray(new Path[d.size()]);
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
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parents: 226
diff changeset
540 if (d.isEmpty()) {
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
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parents: 226
diff changeset
541 final Path[] files = f.toArray(new Path[f.size()]);
237
6e1373b54e9b Allow access to working copy content through HgDataFile. Give access to repository's working dir
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parents: 229
diff changeset
542 FileIterator fi = new FileListIterator(hgRepo.getWorkingDir(), files);
229
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
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parents: 226
diff changeset
543 return new HgWorkingCopyStatusCollector(hgRepo, fi);
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544 }
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545 //
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546
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547 //FileIterator fi = file.isDirectory() ? new DirFileIterator(hgRepo, file) : new FileListIterator(, file);
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548 FileIterator fi = new HgInternals(hgRepo).createWorkingDirWalker(new PathScope(true, paths));
226
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549 return new HgWorkingCopyStatusCollector(hgRepo, fi);
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550 }
229
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551
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552 /**
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553 * Configure collector object to calculate status for matching files only.
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554 * This method may be less effective than explicit list of files as it iterates over whole repository
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555 * (thus supplied matcher doesn't need to care if directories to files in question are also in scope,
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556 * see {@link FileWalker#FileWalker(File, Path.Source, Path.Matcher)})
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557 *
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558 * @return new instance of {@link HgWorkingCopyStatusCollector}, ready to {@link #walk(int, HgStatusInspector) walk} associated working copy
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559 */
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560 @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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561 public static HgWorkingCopyStatusCollector create(HgRepository hgRepo, Path.Matcher scope) {
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562 FileIterator w = new HgInternals(hgRepo).createWorkingDirWalker(null);
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563 FileIterator wf = (scope == null || scope instanceof Path.Matcher.Any) ? w : new FileIteratorFilter(w, scope);
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564 // the reason I need to iterate over full repo and apply filter is that I have no idea whatsoever about
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565 // 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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566 // to the file unless matcher would also explicitly include "a/", "a/b/" in scope. Since I can't rely
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567 // 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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568 // correct matcher from Path is much like what PathScope does, and can be accessed directly with #create(repo, Path...)
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569 // method above/
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570 return new HgWorkingCopyStatusCollector(hgRepo, wf);
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571 }
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572
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573 private static class FileListIterator implements FileIterator {
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574 private final File dir;
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575 private final Path[] paths;
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576 private int index;
287
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577 private RegularFileInfo nextFile;
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578
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579 public FileListIterator(File startDir, Path... files) {
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580 dir = startDir;
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581 paths = files;
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582 reset();
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583 }
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584
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585 public void reset() {
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586 index = -1;
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587 nextFile = new RegularFileInfo();
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588 }
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589
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590 public boolean hasNext() {
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591 return paths.length > 0 && index < paths.length-1;
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592 }
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593
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594 public void next() {
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595 index++;
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596 if (index == paths.length) {
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597 throw new NoSuchElementException();
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598 }
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599 nextFile.init(new File(dir, paths[index].toString()));
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600 }
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601
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602 public Path name() {
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603 return paths[index];
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604 }
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605
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606 public FileInfo file() {
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607 return nextFile;
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608 }
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609
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610 public boolean inScope(Path file) {
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611 for (int i = 0; i < paths.length; i++) {
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612 if (paths[i].equals(file)) {
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613 return true;
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614 }
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615 }
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616 return false;
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617 }
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618 }
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619
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620 private static class FileIteratorFilter implements FileIterator {
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621 private final Path.Matcher filter;
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622 private final FileIterator walker;
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623 private boolean didNext = false;
226
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624
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625 public FileIteratorFilter(FileIterator fileWalker, Path.Matcher filterMatcher) {
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626 assert fileWalker != null;
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627 assert filterMatcher != null;
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628 filter = filterMatcher;
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629 walker = fileWalker;
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630 }
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631
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632 public void reset() throws IOException {
226
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633 walker.reset();
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634 }
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635
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636 public boolean hasNext() throws IOException {
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637 while (walker.hasNext()) {
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638 walker.next();
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639 if (filter.accept(walker.name())) {
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640 didNext = true;
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641 return true;
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642 }
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643 }
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644 return false;
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645 }
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646
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647 public void next() throws IOException {
229
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648 if (didNext) {
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649 didNext = false;
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650 } else {
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651 if (!hasNext()) {
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652 throw new NoSuchElementException();
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653 }
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654 }
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655 }
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656
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657 public Path name() {
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658 return walker.name();
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659 }
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660
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661 public FileInfo file() {
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662 return walker.file();
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663 }
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664
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665 public boolean inScope(Path file) {
229
1ec6b327a6ac Scope for status reworked: explicit files or a general matcher
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 226
diff changeset
666 return filter.accept(file);
226
26ad7827a62d Support status query for a single file or a subdirectory of a repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 219
diff changeset
667 }
26ad7827a62d Support status query for a single file or a subdirectory of a repository
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 219
diff changeset
668 }
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
669 }