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annotate src/com/tmate/hgkit/ll/WorkingCopyStatusCollector.java @ 58:4cfc47bc14cc

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Status against local working dir extracted into distinct class. Iterating over local files extracted for ease of os-dependant patching
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 17 Jan 2011 23:01:19 +0100
parents
children b771e94a4f7c
rev   line source
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>
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diff changeset
1 /*
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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2 * Copyright (c) 2011 Artem Tikhomirov
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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3 */
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4 package com.tmate.hgkit.ll;
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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5
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6 import static com.tmate.hgkit.ll.HgRepository.TIP;
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7
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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8 import java.io.BufferedInputStream;
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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9 import 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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10 import java.io.FileInputStream;
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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11 import java.io.IOException;
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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12 import java.util.Collections;
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13 import java.util.Set;
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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14 import java.util.TreeSet;
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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15
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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16 import com.tmate.hgkit.fs.FileWalker;
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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17
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18 /**
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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19 *
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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20 * @author artem
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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21 */
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22 public class WorkingCopyStatusCollector {
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23
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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24 private final HgRepository repo;
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25 private final FileWalker repoWalker;
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26
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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27 public WorkingCopyStatusCollector(HgRepository hgRepo, FileWalker hgRepoWalker) {
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28 this.repo = hgRepo;
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29 this.repoWalker = hgRepoWalker;
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30 }
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31
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32 public void walk(int baseRevision, StatusCollector.Inspector inspector) {
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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33 final HgIgnore hgIgnore = ((LocalHgRepo) repo).loadIgnore(); // FIXME hack
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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34 final HgDirstate dirstate = ((LocalHgRepo) repo).loadDirstate(); // FIXME hack
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35 TreeSet<String> knownEntries = dirstate.all();
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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36 final boolean isTipBase = baseRevision == TIP || baseRevision == repo.getManifest().getRevisionCount();
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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37 StatusCollector.ManifestRevisionInspector collect = null;
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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38 Set<String> baseRevFiles = Collections.emptySet();
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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39 if (!isTipBase) {
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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40 collect = new StatusCollector.ManifestRevisionInspector(baseRevision, baseRevision);
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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41 repo.getManifest().walk(baseRevision, baseRevision, collect);
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42 baseRevFiles = new TreeSet<String>(collect.files(baseRevision));
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43 }
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44 repoWalker.reset();
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45 while (repoWalker.hasNext()) {
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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46 repoWalker.next();
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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47 String fname = repoWalker.name();
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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48 File f = repoWalker.file();
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49 if (hgIgnore.isIgnored(fname)) {
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50 inspector.ignored(fname);
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51 } else if (knownEntries.remove(fname)) {
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52 // modified, added, removed, clean
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53 if (collect != null) { // need to check against base revision, not FS file
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54 Nodeid nid1 = collect.nodeid(baseRevision, fname);
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55 String flags = collect.flags(baseRevision, fname);
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56 checkLocalStatusAgainstBaseRevision(baseRevFiles, nid1, flags, fname, f, dirstate, inspector);
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57 baseRevFiles.remove(fname);
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58 } else {
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59 checkLocalStatusAgainstFile(fname, f, dirstate, inspector);
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60 }
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61 } else {
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62 inspector.unknown(fname);
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63 }
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64 }
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65 if (collect != null) {
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66 for (String r : baseRevFiles) {
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67 inspector.removed(r);
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68 }
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69 }
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70 for (String m : knownEntries) {
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71 // removed from the repository and missing from working dir shall not be reported as 'deleted'
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72 if (dirstate.checkRemoved(m) == null) {
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73 inspector.missing(m);
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74 }
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75 }
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76 }
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77
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78 public StatusCollector.Record status(int baseRevision) {
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79 StatusCollector.Record rv = new StatusCollector.Record();
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80 walk(baseRevision, rv);
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81 return rv;
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82 }
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83
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84 //********************************************
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85
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86
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87 private static void checkLocalStatusAgainstFile(String fname, File f, HgDirstate dirstate, StatusCollector.Inspector inspector) {
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88 HgDirstate.Record r;
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89 if ((r = dirstate.checkNormal(fname)) != null) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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90 // either clean or modified
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91 if (f.lastModified() / 1000 == r.time && r.size == f.length()) {
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92 inspector.clean(fname);
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93 } else {
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94 // FIXME check actual content to avoid false modified files
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95 inspector.modified(fname);
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96 }
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97 } else if ((r = dirstate.checkAdded(fname)) != null) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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98 if (r.name2 == null) {
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99 inspector.added(fname);
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100 } else {
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101 inspector.copied(fname, r.name2);
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102 }
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103 } else if ((r = dirstate.checkRemoved(fname)) != null) {
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104 inspector.removed(fname);
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105 } else if ((r = dirstate.checkMerged(fname)) != null) {
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106 inspector.modified(fname);
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107 }
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108 }
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109
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110 // XXX refactor checkLocalStatus methods in more OO way
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111 private void checkLocalStatusAgainstBaseRevision(Set<String> baseRevNames, Nodeid nid1, String flags, String fname, File f, HgDirstate dirstate, StatusCollector.Inspector inspector) {
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112 // fname is in the dirstate, either Normal, Added, Removed or Merged
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113 HgDirstate.Record r;
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114 if (nid1 == null) {
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115 // normal: added?
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116 // added: not known at the time of baseRevision, shall report
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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117 // merged: was not known, report as added?
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118 if ((r = dirstate.checkAdded(fname)) != null) {
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119 if (r.name2 != null && baseRevNames.contains(r.name2)) {
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120 baseRevNames.remove(r.name2);
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121 inspector.copied(r.name2, fname);
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122 return;
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123 }
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124 // fall-through, report as added
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125 } else if (dirstate.checkRemoved(fname) != null) {
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126 // removed: removed file was not known at the time of baseRevision, and we should not report it as removed
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127 return;
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128 }
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129 inspector.added(fname);
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130 } else {
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131 // was known; check whether clean or modified
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132 // 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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133 if ((r = dirstate.checkNormal(fname)) != null || (r = dirstate.checkMerged(fname)) != null || (r = dirstate.checkAdded(fname)) != null) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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134 // either clean or modified
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135 HgDataFile fileNode = repo.getFileNode(fname);
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136 final int lengthAtRevision = fileNode.length(nid1);
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137 if (r.size /* XXX File.length() ?! */ != lengthAtRevision || flags != todoGenerateFlags(fname /*java.io.File*/)) {
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138 inspector.modified(fname);
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139 } else {
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140 // check actual content to see actual changes
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141 // XXX consider adding HgDataDile.compare(File/byte[]/whatever) operation to optimize comparison
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142 if (areTheSame(f, fileNode.content(nid1))) {
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143 inspector.clean(fname);
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144 } else {
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145 inspector.modified(fname);
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146 }
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147 }
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148 }
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149 // only those left in idsMap after processing are reported as removed
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150 }
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151
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152 // 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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153 // 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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154 // 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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155 // changeset nodeid + hash(actual content) => entry (Nodeid) in the next Manifest
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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156 // 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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157 // The question is whether original Hg treats this case (same content, different parents and hence nodeids) as 'modified' or 'clean'
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158 }
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159
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160 private static String todoGenerateFlags(String fname) {
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161 // FIXME implement
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162 return null;
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163 }
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164 private static boolean areTheSame(File f, byte[] data) {
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165 try {
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166 BufferedInputStream is = new BufferedInputStream(new FileInputStream(f));
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167 int i = 0;
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168 while (i < data.length && data[i] == is.read()) {
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169 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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170 }
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171 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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172 } catch (IOException ex) {
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173 ex.printStackTrace(); // log warn
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174 }
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175 return false;
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176 }
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177
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178 }