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annotate src/org/tmatesoft/hg/repo/HgStatusCollector.java @ 154:ba2bf656f00f

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author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 24 Feb 2011 22:16:19 +0100
parents 37a34044e6bd
children d5268ca7715b
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 org.tmatesoft.hg.repo.HgRepository.BAD_REVISION;
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20 import static org.tmatesoft.hg.repo.HgRepository.TIP;
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21
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22 import java.util.Collection;
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23 import java.util.Collections;
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24 import java.util.LinkedHashMap;
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25 import java.util.LinkedList;
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26 import java.util.List;
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27 import java.util.Map;
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28 import java.util.TreeMap;
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29 import java.util.TreeSet;
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30
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31 import org.tmatesoft.hg.core.Nodeid;
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32 import org.tmatesoft.hg.util.Path;
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33 import org.tmatesoft.hg.util.PathPool;
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34 import org.tmatesoft.hg.util.PathRewrite;
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36
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37 /**
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38 * RevisionWalker?
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39 *
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40 * @author Artem Tikhomirov
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41 * @author TMate Software Ltd.
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42 */
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43 public class HgStatusCollector {
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45 private final HgRepository repo;
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46 private final Map<Integer, ManifestRevisionInspector> cache; // sparse array, in fact
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47 private PathPool pathPool;
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48
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49 public HgStatusCollector(HgRepository hgRepo) {
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50 this.repo = hgRepo;
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51 cache = new TreeMap<Integer, ManifestRevisionInspector>();
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52 ManifestRevisionInspector emptyFakeState = new ManifestRevisionInspector();
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53 emptyFakeState.begin(-1, null);
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54 emptyFakeState.end(-1); // FIXME HgRepo.TIP == -1 as well, need to distinguish fake "prior to first" revision from "the very last"
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55 cache.put(-1, emptyFakeState);
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56 }
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57
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58 public HgRepository getRepo() {
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59 return repo;
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60 }
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61
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62 private ManifestRevisionInspector get(int rev) {
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63 ManifestRevisionInspector i = cache.get(rev);
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64 if (i == null) {
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65 i = new ManifestRevisionInspector();
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66 cache.put(rev, i);
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67 repo.getManifest().walk(rev, rev, i);
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68 }
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69 return i;
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70 }
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72 /*package-local*/ ManifestRevisionInspector raw(int rev) {
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73 return get(rev);
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74 }
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75 /*package-local*/ PathPool getPathPool() {
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76 if (pathPool == null) {
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77 pathPool = new PathPool(new PathRewrite.Empty());
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78 }
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79 return pathPool;
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80 }
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81
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82 /**
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83 * Allows sharing of a common path cache
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84 */
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85 public void setPathPool(PathPool pathPool) {
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86 this.pathPool = pathPool;
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87 }
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89
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90 // hg status --change <rev>
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91 public void change(int rev, HgStatusInspector inspector) {
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92 int[] parents = new int[2];
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93 repo.getChangelog().parents(rev, parents, null, null);
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94 walk(parents[0], rev, inspector);
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95 }
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97 // I assume revision numbers are the same for changelog and manifest - here
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98 // user would like to pass changelog revision numbers, and I use them directly to walk manifest.
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99 // if this assumption is wrong, fix this (lookup manifest revisions from changeset).
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100 public void walk(int rev1, int rev2, HgStatusInspector inspector) {
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101 if (rev1 == rev2) {
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102 throw new IllegalArgumentException();
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103 }
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104 if (inspector == null) {
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105 throw new IllegalArgumentException();
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106 }
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107 if (inspector instanceof Record) {
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108 ((Record) inspector).init(rev1, rev2, this);
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109 }
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110 if (rev1 == TIP) {
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111 rev1 = repo.getManifest().getLastRevision();
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112 }
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113 if (rev2 == TIP) {
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114 rev2 = repo.getManifest().getLastRevision();
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115 }
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116 // in fact, rev1 and rev2 are often next (or close) to each other,
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117 // thus, we can optimize Manifest reads here (manifest.walk(rev1, rev2))
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118 ManifestRevisionInspector r1, r2 ;
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119 if (!cache.containsKey(rev1) && !cache.containsKey(rev2) && Math.abs(rev1 - rev2) < 5 /*subjective equivalent of 'close enough'*/) {
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120 int minRev = rev1 < rev2 ? rev1 : rev2;
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121 int maxRev = minRev == rev1 ? rev2 : rev1;
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122 if (minRev > 0) {
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123 minRev--; // expand range a bit
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124 // XXX perhaps, if revlog.baseRevision is cheap, shall expand minRev up to baseRevision
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125 // which gonna be read anyway
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126 }
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127
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128 repo.getManifest().walk(minRev, maxRev, new HgManifest.Inspector() {
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129 private ManifestRevisionInspector delegate;
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130
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131 public boolean begin(int revision, Nodeid nid) {
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132 cache.put(revision, delegate = new ManifestRevisionInspector());
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133 delegate.begin(revision, nid);
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134 return true;
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135 }
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136
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137 public boolean next(Nodeid nid, String fname, String flags) {
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138 delegate.next(nid, fname, flags);
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139 return true;
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140 }
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141
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142 public boolean end(int revision) {
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143 delegate.end(revision);
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144 delegate = null;
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145 return true;
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146 }
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147 });
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148 }
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149 r1 = get(rev1);
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150 r2 = get(rev2);
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151
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152 PathPool pp = getPathPool();
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153
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154 TreeSet<String> r1Files = new TreeSet<String>(r1.files());
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155 for (String fname : r2.files()) {
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156 if (r1Files.remove(fname)) {
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157 Nodeid nidR1 = r1.nodeid(fname);
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158 Nodeid nidR2 = r2.nodeid(fname);
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159 String flagsR1 = r1.flags(fname);
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160 String flagsR2 = r2.flags(fname);
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161 if (nidR1.equals(nidR2) && ((flagsR2 == null && flagsR1 == null) || flagsR2.equals(flagsR1))) {
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162 inspector.clean(pp.path(fname));
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163 } else {
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164 inspector.modified(pp.path(fname));
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165 }
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166 } else {
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167 Path copyTarget = pp.path(fname);
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168 Path copyOrigin = getOriginIfCopy(repo, copyTarget, r1Files, rev1);
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169 if (copyOrigin != null) {
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170 inspector.copied(pp.path(copyOrigin) /*pipe through pool, just in case*/, copyTarget);
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171 } else {
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172 inspector.added(copyTarget);
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173 }
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174 }
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175 }
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176 for (String left : r1Files) {
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177 inspector.removed(pp.path(left));
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178 }
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179 }
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180
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181 public Record status(int rev1, int rev2) {
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182 Record rv = new Record();
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183 walk(rev1, rev2, rv);
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184 return rv;
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185 }
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186
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187 /*package-local*/static Path getOriginIfCopy(HgRepository hgRepo, Path fname, Collection<String> originals, int originalChangelogRevision) {
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188 HgDataFile df = hgRepo.getFileNode(fname);
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189 while (df.isCopy()) {
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190 Path original = df.getCopySourceName();
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191 if (originals.contains(original.toString())) {
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192 df = hgRepo.getFileNode(original);
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193 int changelogRevision = df.getChangesetLocalRevision(0);
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194 if (changelogRevision <= originalChangelogRevision) {
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195 // copy/rename source was known prior to rev1
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196 // (both r1Files.contains is true and original was created earlier than rev1)
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197 // without r1Files.contains changelogRevision <= rev1 won't suffice as the file
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198 // might get removed somewhere in between (changelogRevision < R < rev1)
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199 return original;
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200 }
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201 break; // copy/rename done later
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202 }
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203 df = hgRepo.getFileNode(original); // try more steps away
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204 }
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205 return null;
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206 }
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207
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208 // XXX for r1..r2 status, only modified, added, removed (and perhaps, clean) make sense
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209 // XXX Need to specify whether copy targets are in added or not (@see Inspector#copied above)
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210 public static class Record implements HgStatusInspector {
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211 private List<Path> modified, added, removed, clean, missing, unknown, ignored;
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212 private Map<Path, Path> copied;
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213
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214 private int startRev, endRev;
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215 private HgStatusCollector statusHelper;
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217 // XXX StatusCollector may additionally initialize Record instance to speed lookup of changed file revisions
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218 // here I need access to ManifestRevisionInspector via #raw(). Perhaps, non-static class (to get
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219 // implicit reference to StatusCollector) may be better?
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220 // Since users may want to reuse Record instance we've once created (and initialized), we need to
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221 // ensure functionality is correct for each/any call (#walk checks instanceof Record and fixes it up)
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222 // Perhaps, distinct helper (sc.getRevisionHelper().nodeid(fname)) would be better, just not clear
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223 // how to supply [start..end] values there easily
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224 /*package-local*/void init(int startRevision, int endRevision, HgStatusCollector self) {
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225 startRev = startRevision;
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226 endRev = endRevision;
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227 statusHelper = self;
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228 }
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229
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230 public Nodeid nodeidBeforeChange(Path fname) {
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231 if (statusHelper == null || startRev == BAD_REVISION) {
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232 return null;
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233 }
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234 if ((modified == null || !modified.contains(fname)) && (removed == null || !removed.contains(fname))) {
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235 return null;
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236 }
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237 return statusHelper.raw(startRev).nodeid(fname.toString());
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238 }
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239 public Nodeid nodeidAfterChange(Path fname) {
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240 if (statusHelper == null || endRev == BAD_REVISION) {
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241 return null;
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242 }
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243 if ((modified == null || !modified.contains(fname)) && (added == null || !added.contains(fname))) {
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diff changeset
244 return null;
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245 }
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246 return statusHelper.raw(endRev).nodeid(fname.toString());
64
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247 }
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248
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249 public List<Path> getModified() {
55
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250 return proper(modified);
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251 }
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252
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253 public List<Path> getAdded() {
55
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254 return proper(added);
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255 }
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256
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257 public List<Path> getRemoved() {
55
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258 return proper(removed);
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259 }
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260
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261 public Map<Path,Path> getCopied() {
55
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262 if (copied == null) {
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263 return Collections.emptyMap();
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264 }
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265 return Collections.unmodifiableMap(copied);
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266 }
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267
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268 public List<Path> getClean() {
55
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269 return proper(clean);
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270 }
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271
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272 public List<Path> getMissing() {
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273 return proper(missing);
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274 }
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275
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276 public List<Path> getUnknown() {
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277 return proper(unknown);
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278 }
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279
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280 public List<Path> getIgnored() {
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281 return proper(ignored);
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282 }
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283
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284 private List<Path> proper(List<Path> l) {
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285 if (l == null) {
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286 return Collections.emptyList();
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287 }
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288 return Collections.unmodifiableList(l);
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289 }
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290
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291 //
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292 //
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293
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294 public void modified(Path fname) {
55
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295 modified = doAdd(modified, fname);
05829a70b30b Status operation extracted into separate, cache-friendly class
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296 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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297
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298 public void added(Path fname) {
55
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299 added = doAdd(added, fname);
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300 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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301
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302 public void copied(Path fnameOrigin, Path fnameAdded) {
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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303 if (copied == null) {
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diff changeset
304 copied = new LinkedHashMap<Path, Path>();
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305 }
74
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
306 added(fnameAdded);
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diff changeset
307 copied.put(fnameAdded, fnameOrigin);
55
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308 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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309
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diff changeset
310 public void removed(Path fname) {
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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311 removed = doAdd(removed, fname);
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312 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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313
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diff changeset
314 public void clean(Path fname) {
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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315 clean = doAdd(clean, fname);
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316 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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317
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diff changeset
318 public void missing(Path fname) {
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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319 missing = doAdd(missing, fname);
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
320 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
321
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diff changeset
322 public void unknown(Path fname) {
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
323 unknown = doAdd(unknown, fname);
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
324 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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325
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diff changeset
326 public void ignored(Path fname) {
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
327 ignored = doAdd(ignored, fname);
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
328 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
329
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diff changeset
330 private static List<Path> doAdd(List<Path> l, Path p) {
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
331 if (l == null) {
93
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diff changeset
332 l = new LinkedList<Path>();
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
333 }
93
d55d4eedfc57 Switch to Path instead of String in filenames returned by various status operations
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diff changeset
334 l.add(p);
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
335 return l;
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
336 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
337 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
338
89
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
339 /*package-local*/ static final class ManifestRevisionInspector implements HgManifest.Inspector {
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
340 private final TreeMap<String, Nodeid> idsMap;
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
341 private final TreeMap<String, String> flagsMap;
55
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diff changeset
342
89
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diff changeset
343 public ManifestRevisionInspector() {
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
344 idsMap = new TreeMap<String, Nodeid>();
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
345 flagsMap = new TreeMap<String, String>();
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
346 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
347
89
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diff changeset
348 public Collection<String> files() {
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
349 return idsMap.keySet();
55
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diff changeset
350 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
351
89
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
352 public Nodeid nodeid(String fname) {
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
353 return idsMap.get(fname);
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
354 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
355
89
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
356 public String flags(String fname) {
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
357 return flagsMap.get(fname);
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
358 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
359
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
360 //
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
361
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
362 public boolean next(Nodeid nid, String fname, String flags) {
89
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
363 idsMap.put(fname, nid);
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
364 flagsMap.put(fname, flags);
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
365 return true;
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
366 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
367
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
368 public boolean end(int revision) {
89
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
369 // in fact, this class cares about single revision
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
370 return false;
55
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
371 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
372
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
373 public boolean begin(int revision, Nodeid nid) {
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
374 return true;
05829a70b30b Status operation extracted into separate, cache-friendly class
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diff changeset
375 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
376 }
05829a70b30b Status operation extracted into separate, cache-friendly class
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parents:
diff changeset
377
05829a70b30b Status operation extracted into separate, cache-friendly class
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
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