Mercurial > jhg
annotate src/org/tmatesoft/hg/core/HgManifestCommand.java @ 303:2ffcbf360fd5
Remove debug printout
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Tue, 20 Sep 2011 04:43:39 +0200 |
parents | 6dbbc53fc46d |
children | 189dc6dc1c3e |
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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.core; |
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18 |
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19 import static org.tmatesoft.hg.repo.HgRepository.*; |
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20 import static org.tmatesoft.hg.repo.HgRepository.BAD_REVISION; |
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21 import static org.tmatesoft.hg.repo.HgRepository.TIP; |
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22 |
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23 import java.util.ConcurrentModificationException; |
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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 |
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28 import org.tmatesoft.hg.repo.HgManifest; |
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29 import org.tmatesoft.hg.repo.HgRepository; |
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30 import org.tmatesoft.hg.repo.HgManifest.Flags; |
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31 import org.tmatesoft.hg.util.Path; |
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32 import org.tmatesoft.hg.util.PathPool; |
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33 import org.tmatesoft.hg.util.PathRewrite; |
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34 |
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35 |
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36 /** |
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37 * Gives access to list of files in each revision (Mercurial manifest information), 'hg manifest' counterpart. |
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38 * |
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39 * @author Artem Tikhomirov |
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40 * @author TMate Software Ltd. |
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41 */ |
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42 public class HgManifestCommand extends HgAbstractCommand<HgManifestCommand> { |
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43 |
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44 private final HgRepository repo; |
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45 private Path.Matcher matcher; |
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46 private int startRev = 0, endRev = TIP; |
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47 private Handler visitor; |
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48 private boolean needDirs = false; |
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49 |
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50 private final Mediator mediator = new Mediator(); |
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51 |
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52 public HgManifestCommand(HgRepository hgRepo) { |
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53 repo = hgRepo; |
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54 } |
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55 |
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56 /** |
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57 * Parameterize command to visit revisions <code>[rev1..rev2]</code>. |
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58 * @param rev1 - local revision number to start from. Non-negative. May be {@link HgRepository#TIP} (rev2 argument shall be {@link HgRepository#TIP} as well, then) |
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59 * @param rev2 - local revision number to end with, inclusive. Non-negative, greater or equal to rev1. May be {@link HgRepository#TIP}. |
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60 * @return <code>this</code> for convenience. |
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61 * @throws IllegalArgumentException if revision arguments are incorrect (see above). |
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62 */ |
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63 public HgManifestCommand range(int rev1, int rev2) { |
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64 // XXX if manifest range is different from that of changelog, need conversion utils (external?) |
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65 boolean badArgs = rev1 == BAD_REVISION || rev2 == BAD_REVISION || rev1 == WORKING_COPY || rev2 == WORKING_COPY; |
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66 badArgs |= rev2 != TIP && rev2 < rev1; // range(3, 1); |
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67 badArgs |= rev1 == TIP && rev2 != TIP; // range(TIP, 2), although this may be legitimate when TIP points to 2 |
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68 if (badArgs) { |
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69 throw new IllegalArgumentException(String.format("Bad range: [%d, %d]", rev1, rev2)); |
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70 } |
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71 startRev = rev1; |
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72 endRev = rev2; |
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73 return this; |
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74 } |
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75 |
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76 public HgManifestCommand revision(int rev) { |
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77 startRev = endRev = rev; |
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78 return this; |
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79 } |
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80 |
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81 public HgManifestCommand dirs(boolean include) { |
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82 // XXX whether directories with directories only are include or not |
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83 // now lists only directories with files |
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84 needDirs = include; |
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85 return this; |
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86 } |
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87 |
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88 /** |
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89 * Limit manifest walk to a subset of files. |
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90 * @param pathMatcher - filter, pass <code>null</code> to clear. |
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91 * @return <code>this</code> instance for convenience |
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92 */ |
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93 public HgManifestCommand match(Path.Matcher pathMatcher) { |
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94 matcher = pathMatcher; |
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95 return this; |
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96 } |
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97 |
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98 /** |
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99 * Runs the command. |
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100 * @param handler - callback to get the outcome |
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101 * @throws IllegalArgumentException if handler is <code>null</code> |
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102 * @throws ConcurrentModificationException if this command is already in use (running) |
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103 */ |
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104 public void execute(Handler handler) { |
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105 if (handler == null) { |
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106 throw new IllegalArgumentException(); |
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107 } |
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108 if (visitor != null) { |
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109 throw new ConcurrentModificationException(); |
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110 } |
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111 try { |
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112 visitor = handler; |
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113 mediator.start(); |
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114 repo.getManifest().walk(startRev, endRev, mediator); |
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115 } finally { |
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116 mediator.done(); |
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117 visitor = null; |
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118 } |
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119 } |
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120 |
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121 /** |
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122 * Callback to walk file/directory tree of a revision |
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123 */ |
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124 public interface Handler { |
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125 void begin(Nodeid manifestRevision); |
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126 void dir(Path p); // optionally invoked (if walker was configured to spit out directories) prior to any files from this dir and subdirs |
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127 void file(HgFileRevision fileRevision); // XXX allow to check p is invalid (df.exists()) |
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128 void end(Nodeid manifestRevision); |
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129 } |
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130 |
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131 // I'd rather let HgManifestCommand implement HgManifest.Inspector directly, but this pollutes API alot |
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132 private class Mediator implements HgManifest.Inspector2 { |
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133 // file names are likely to repeat in each revision, hence caching of Paths. |
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134 // However, once HgManifest.Inspector switches to Path objects, perhaps global Path pool |
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135 // might be more effective? |
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136 private PathPool pathPool; |
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137 private List<HgFileRevision> manifestContent; |
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138 private Nodeid manifestNodeid; |
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139 |
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140 public void start() { |
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141 // Manifest keeps normalized paths |
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142 pathPool = new PathPool(new PathRewrite.Empty()); |
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143 } |
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144 |
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145 public void done() { |
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146 manifestContent = null; |
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147 pathPool = null; |
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148 } |
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149 |
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150 public boolean begin(int manifestRevision, Nodeid nid, int changelogRevision) { |
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151 if (needDirs && manifestContent == null) { |
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152 manifestContent = new LinkedList<HgFileRevision>(); |
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153 } |
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154 visitor.begin(manifestNodeid = nid); |
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155 return true; |
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156 } |
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157 public boolean end(int revision) { |
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158 if (needDirs) { |
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159 LinkedHashMap<Path, LinkedList<HgFileRevision>> breakDown = new LinkedHashMap<Path, LinkedList<HgFileRevision>>(); |
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160 for (HgFileRevision fr : manifestContent) { |
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161 Path filePath = fr.getPath(); |
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162 Path dirPath = pathPool.parent(filePath); |
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163 LinkedList<HgFileRevision> revs = breakDown.get(dirPath); |
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164 if (revs == null) { |
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165 revs = new LinkedList<HgFileRevision>(); |
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166 breakDown.put(dirPath, revs); |
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167 } |
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168 revs.addLast(fr); |
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169 } |
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170 for (Path dir : breakDown.keySet()) { |
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171 visitor.dir(dir); |
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172 for (HgFileRevision fr : breakDown.get(dir)) { |
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173 visitor.file(fr); |
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174 } |
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175 } |
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176 manifestContent.clear(); |
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177 } |
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178 visitor.end(manifestNodeid); |
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179 manifestNodeid = null; |
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180 return true; |
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181 } |
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182 public boolean next(Nodeid nid, String fname, String flags) { |
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183 throw new HgBadStateException(HgManifest.Inspector2.class.getName()); |
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184 } |
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185 |
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186 public boolean next(Nodeid nid, Path fname, Flags flags) { |
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187 if (matcher != null && !matcher.accept(fname)) { |
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188 return true; |
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189 } |
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190 HgFileRevision fr = new HgFileRevision(repo, nid, fname); |
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191 if (needDirs) { |
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192 manifestContent.add(fr); |
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193 } else { |
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194 visitor.file(fr); |
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195 } |
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196 return true; |
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197 } |
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198 } |
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199 } |