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annotate src/org/tmatesoft/hg/repo/WorkingCopyStatusCollector.java @ 90:a95c700408a9

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Correctly report copy/rename events for rev..working copy case
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 26 Jan 2011 06:31:40 +0100
parents 42bcb4bffd17
children c2ce1cfaeb9e
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@svnkit.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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22 import java.io.BufferedInputStream;
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23 import java.io.File;
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24 import java.io.FileInputStream;
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25 import java.io.IOException;
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26 import java.util.Collections;
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27 import java.util.Set;
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28 import java.util.TreeSet;
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30 import org.tmatesoft.hg.core.Nodeid;
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31 import org.tmatesoft.hg.repo.StatusCollector.ManifestRevisionInspector;
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32 import org.tmatesoft.hg.util.FileWalker;
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34 /**
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35 *
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36 * @author Artem Tikhomirov
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37 * @author TMate Software Ltd.
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38 */
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39 public class WorkingCopyStatusCollector {
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41 private final HgRepository repo;
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42 private final FileWalker repoWalker;
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43 private HgDirstate dirstate;
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44 private StatusCollector baseRevisionCollector;
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45
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46 public WorkingCopyStatusCollector(HgRepository hgRepo) {
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47 this(hgRepo, hgRepo.createWorkingDirWalker());
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48 }
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50 WorkingCopyStatusCollector(HgRepository hgRepo, FileWalker hgRepoWalker) {
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51 this.repo = hgRepo;
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52 this.repoWalker = hgRepoWalker;
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53 }
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55 /**
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56 * Optionally, supply a collector instance that may cache (or have already cached) base revision
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57 * @param sc may be null
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58 */
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59 public void setBaseRevisionCollector(StatusCollector sc) {
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60 baseRevisionCollector = sc;
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61 }
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63 private HgDirstate getDirstate() {
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64 if (dirstate == null) {
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65 dirstate = repo.loadDirstate();
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66 }
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67 return dirstate;
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68 }
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69
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70 // may be invoked few times
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71 public void walk(int baseRevision, StatusCollector.Inspector inspector) {
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72 final HgIgnore hgIgnore = repo.loadIgnore();
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73 TreeSet<String> knownEntries = getDirstate().all();
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74 final boolean isTipBase;
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75 if (baseRevision == TIP) {
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76 baseRevision = repo.getManifest().getRevisionCount() - 1;
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77 isTipBase = true;
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78 } else {
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79 isTipBase = baseRevision == repo.getManifest().getRevisionCount() - 1;
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80 }
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81 StatusCollector.ManifestRevisionInspector collect = null;
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82 Set<String> baseRevFiles = Collections.emptySet();
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83 if (!isTipBase) {
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84 if (baseRevisionCollector != null) {
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85 collect = baseRevisionCollector.raw(baseRevision);
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86 } else {
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87 collect = new StatusCollector.ManifestRevisionInspector();
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88 repo.getManifest().walk(baseRevision, baseRevision, collect);
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89 }
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90 baseRevFiles = new TreeSet<String>(collect.files());
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91 }
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92 if (inspector instanceof StatusCollector.Record) {
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93 StatusCollector sc = baseRevisionCollector == null ? new StatusCollector(repo) : baseRevisionCollector;
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94 ((StatusCollector.Record) inspector).init(baseRevision, BAD_REVISION, sc);
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95 }
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96 repoWalker.reset();
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97 while (repoWalker.hasNext()) {
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98 repoWalker.next();
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99 String fname = repoWalker.name();
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100 File f = repoWalker.file();
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101 if (hgIgnore.isIgnored(fname)) {
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102 inspector.ignored(fname);
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103 } else if (knownEntries.remove(fname)) {
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104 // modified, added, removed, clean
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105 if (collect != null) { // need to check against base revision, not FS file
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106 checkLocalStatusAgainstBaseRevision(baseRevFiles, collect, baseRevision, fname, f, inspector);
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107 baseRevFiles.remove(fname);
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108 } else {
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109 checkLocalStatusAgainstFile(fname, f, inspector);
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diff changeset
110 }
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parents:
diff changeset
111 } else {
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parents:
diff changeset
112 inspector.unknown(fname);
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
113 }
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diff changeset
114 }
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parents:
diff changeset
115 if (collect != null) {
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diff changeset
116 for (String r : baseRevFiles) {
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
117 inspector.removed(r);
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
118 }
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>
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diff changeset
119 }
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diff changeset
120 for (String m : knownEntries) {
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6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
121 // missing known file from a working dir
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diff changeset
122 if (getDirstate().checkRemoved(m) == null) {
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diff changeset
123 // not removed from the repository = 'deleted'
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
124 inspector.missing(m);
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6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
125 } else {
6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
126 // 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
127 // if we check against non-tip revision, do not report files that were added past that revision and now removed.
658fa6b3a371 Fixed a defect when a file added and removed past some revision was reported as R for status against that rev
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diff changeset
128 if (collect == null || baseRevFiles.contains(m)) {
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
129 inspector.removed(m);
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
130 }
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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131 }
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132 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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133 }
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134
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135 public StatusCollector.Record status(int baseRevision) {
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136 StatusCollector.Record rv = new StatusCollector.Record();
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137 walk(baseRevision, rv);
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138 return rv;
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139 }
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140
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141 //********************************************
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142
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diff changeset
143
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b771e94a4f7c Introduce Internals to keep LocalHgRepo casts and alike in a single place. WCSC optionally to reuse SC data
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diff changeset
144 private void checkLocalStatusAgainstFile(String fname, File f, StatusCollector.Inspector 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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145 HgDirstate.Record r;
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diff changeset
146 if ((r = getDirstate().checkNormal(fname)) != null) {
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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147 // either clean or modified
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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diff changeset
148 if (f.lastModified() / 1000 == r.time && r.size == f.length()) {
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
149 inspector.clean(fname);
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150 } else {
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parents:
diff changeset
151 // FIXME check actual content to avoid false modified files
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diff changeset
152 inspector.modified(fname);
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153 }
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b771e94a4f7c Introduce Internals to keep LocalHgRepo casts and alike in a single place. WCSC optionally to reuse SC data
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diff changeset
154 } else if ((r = getDirstate().checkAdded(fname)) != null) {
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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diff changeset
155 if (r.name2 == null) {
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
156 inspector.added(fname);
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diff changeset
157 } else {
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6f1b88693d48 Complete refactoring to org.tmatesoft
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diff changeset
158 inspector.copied(r.name2, fname);
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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159 }
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b771e94a4f7c Introduce Internals to keep LocalHgRepo casts and alike in a single place. WCSC optionally to reuse SC data
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diff changeset
160 } else if ((r = getDirstate().checkRemoved(fname)) != null) {
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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diff changeset
161 inspector.removed(fname);
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b771e94a4f7c Introduce Internals to keep LocalHgRepo casts and alike in a single place. WCSC optionally to reuse SC data
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diff changeset
162 } else if ((r = getDirstate().checkMerged(fname)) != null) {
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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diff changeset
163 inspector.modified(fname);
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164 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
165 }
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diff changeset
166
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
167 // XXX refactor checkLocalStatus methods in more OO way
90
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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parents: 89
diff changeset
168 private void checkLocalStatusAgainstBaseRevision(Set<String> baseRevNames, ManifestRevisionInspector collect, int baseRevision, String fname, File f, StatusCollector.Inspector 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
169 // fname is in the dirstate, either Normal, Added, Removed or Merged
89
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
170 Nodeid nid1 = collect.nodeid(fname);
42bcb4bffd17 Refactored to simplify manifest collector
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diff changeset
171 String flags = collect.flags(fname);
58
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diff changeset
172 HgDirstate.Record r;
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diff changeset
173 if (nid1 == null) {
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diff changeset
174 // normal: added?
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
175 // added: not known at the time of baseRevision, shall report
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
176 // merged: was not known, report as added?
90
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diff changeset
177 if ((r = getDirstate().checkNormal(fname)) != null) {
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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parents: 89
diff changeset
178 String origin = StatusCollector.getOriginIfCopy(repo, fname, baseRevNames, baseRevision);
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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diff changeset
179 if (origin != null) {
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diff changeset
180 inspector.copied(origin, fname);
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diff changeset
181 return;
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diff changeset
182 }
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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parents: 89
diff changeset
183 } else if ((r = getDirstate().checkAdded(fname)) != null) {
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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diff changeset
184 if (r.name2 != null && baseRevNames.contains(r.name2)) {
90
a95c700408a9 Correctly report copy/rename events for rev..working copy case
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diff changeset
185 baseRevNames.remove(r.name2); // XXX surely I shall not report rename source as Removed?
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
186 inspector.copied(r.name2, fname);
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parents:
diff changeset
187 return;
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diff changeset
188 }
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parents:
diff changeset
189 // fall-through, report as added
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b771e94a4f7c Introduce Internals to keep LocalHgRepo casts and alike in a single place. WCSC optionally to reuse SC data
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diff changeset
190 } else if (getDirstate().checkRemoved(fname) != null) {
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
191 // removed: removed file was not known at the time of baseRevision, and we should not report it as removed
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
192 return;
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
193 }
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parents:
diff changeset
194 inspector.added(fname);
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
195 } else {
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
196 // was known; check whether clean or modified
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
197 // when added - seems to be the case of a file added once again, hence need to check if content is different
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b771e94a4f7c Introduce Internals to keep LocalHgRepo casts and alike in a single place. WCSC optionally to reuse SC data
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diff changeset
198 if ((r = getDirstate().checkNormal(fname)) != null || (r = getDirstate().checkMerged(fname)) != null || (r = getDirstate().checkAdded(fname)) != null) {
58
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
199 // either clean or modified
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parents:
diff changeset
200 HgDataFile fileNode = repo.getFileNode(fname);
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
201 final int lengthAtRevision = fileNode.length(nid1);
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
202 if (r.size /* XXX File.length() ?! */ != lengthAtRevision || flags != todoGenerateFlags(fname /*java.io.File*/)) {
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
203 inspector.modified(fname);
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
204 } else {
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
205 // check actual content to see actual changes
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parents:
diff changeset
206 // XXX consider adding HgDataDile.compare(File/byte[]/whatever) operation to optimize comparison
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
207 if (areTheSame(f, fileNode.content(nid1))) {
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
208 inspector.clean(fname);
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
209 } else {
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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parents:
diff changeset
210 inspector.modified(fname);
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
211 }
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
212 }
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
213 }
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
214 // only those left in idsMap after processing are reported as removed
4cfc47bc14cc Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
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diff changeset
215 }
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:
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216
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217 // 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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218 // 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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219 // 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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220 // changeset nodeid + hash(actual content) => entry (Nodeid) in the next Manifest
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221 // 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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222 // The question is whether original Hg treats this case (same content, different parents and hence nodeids) as 'modified' or 'clean'
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223 }
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224
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225 private static String todoGenerateFlags(String fname) {
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226 // FIXME implement
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227 return null;
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228 }
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229 private static boolean areTheSame(File f, byte[] data) {
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230 try {
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231 BufferedInputStream is = new BufferedInputStream(new FileInputStream(f));
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232 int i = 0;
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233 while (i < data.length && data[i] == is.read()) {
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234 i++; // increment only for successful match, otherwise won't tell last byte in data was the same as read from the stream
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235 }
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236 return i == data.length && is.read() == -1; // although data length is expected to be the same (see caller), check that we reached EOF, no more data left.
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237 } catch (IOException ex) {
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238 ex.printStackTrace(); // log warn
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239 }
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240 return false;
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241 }
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242
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243 }