Mercurial > jhg
annotate src/org/tmatesoft/hg/core/HgManifestCommand.java @ 643:a8ce405da1f5
v1.2 line of dev: update versions, use patch merge code by default
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Wed, 19 Jun 2013 16:03:11 +0200 |
parents | 6526d8adbc0f |
children | 98ff1fb49abe |
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1 /* |
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2 * Copyright (c) 2011-2013 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 |
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21 import java.util.ConcurrentModificationException; |
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22 import java.util.LinkedHashMap; |
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23 import java.util.LinkedList; |
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24 import java.util.List; |
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25 |
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26 import org.tmatesoft.hg.internal.CsetParamKeeper; |
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27 import org.tmatesoft.hg.internal.PathPool; |
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28 import org.tmatesoft.hg.repo.HgManifest; |
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29 import org.tmatesoft.hg.repo.HgManifest.Flags; |
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30 import org.tmatesoft.hg.repo.HgRepository; |
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31 import org.tmatesoft.hg.repo.HgRuntimeException; |
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32 import org.tmatesoft.hg.util.CancelSupport; |
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33 import org.tmatesoft.hg.util.CancelledException; |
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34 import org.tmatesoft.hg.util.Path; |
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35 import org.tmatesoft.hg.util.PathRewrite; |
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36 |
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37 |
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38 /** |
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39 * Gives access to list of files in each revision (Mercurial manifest information), 'hg manifest' counterpart. |
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40 * |
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41 * @author Artem Tikhomirov |
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42 * @author TMate Software Ltd. |
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43 */ |
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44 public class HgManifestCommand extends HgAbstractCommand<HgManifestCommand> { |
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45 |
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46 private final HgRepository repo; |
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47 private Path.Matcher matcher; |
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48 private int startRev = 0, endRev = TIP; |
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49 private HgManifestHandler visitor; |
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50 private boolean needDirs = false; |
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51 |
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52 private final Mediator mediator = new Mediator(); |
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53 |
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54 public HgManifestCommand(HgRepository hgRepo) { |
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55 repo = hgRepo; |
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56 } |
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57 |
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58 /** |
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59 * Parameterize command to visit revisions <code>[rev1..rev2]</code>. |
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60 * @param rev1 - revision local index to start from. Non-negative. May be {@link HgRepository#TIP} (rev2 argument shall be {@link HgRepository#TIP} as well, then) |
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61 * @param rev2 - revision local index to end with, inclusive. Non-negative, greater or equal to rev1. May be {@link HgRepository#TIP}. |
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62 * @return <code>this</code> for convenience. |
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63 * @throws IllegalArgumentException if revision arguments are incorrect (see above). |
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64 */ |
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65 public HgManifestCommand range(int rev1, int rev2) { |
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66 // XXX if manifest range is different from that of changelog, need conversion utils (external?) |
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67 boolean badArgs = rev1 == BAD_REVISION || rev2 == BAD_REVISION || rev1 == WORKING_COPY || rev2 == WORKING_COPY; |
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68 badArgs |= rev2 != TIP && rev2 < rev1; // range(3, 1); |
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69 badArgs |= rev1 == TIP && rev2 != TIP; // range(TIP, 2), although this may be legitimate when TIP points to 2 |
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70 if (badArgs) { |
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71 // TODO [2.0 API break] throw checked HgBadArgumentException instead |
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72 throw new IllegalArgumentException(String.format("Bad range: [%d, %d]", rev1, rev2)); |
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73 } |
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74 startRev = rev1; |
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75 endRev = rev2; |
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76 return this; |
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77 } |
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78 |
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79 /** |
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80 * Select changeset for the command using revision index |
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81 * @param csetRevisionIndex index of changeset revision |
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82 * @return <code>this</code> for convenience. |
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83 */ |
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84 public HgManifestCommand changeset(int csetRevisionIndex) { |
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85 // TODO [2.0 API break] shall throw HgBadArgumentException, like other commands do |
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86 return range(csetRevisionIndex, csetRevisionIndex); |
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87 } |
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88 |
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89 /** |
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90 * Select changeset for the command |
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91 * |
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92 * @param nid changeset revision |
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93 * @return <code>this</code> for convenience |
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94 * @throws HgBadArgumentException if failed to find supplied changeset revision |
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95 */ |
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96 public HgManifestCommand changeset(Nodeid nid) throws HgBadArgumentException { |
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97 // XXX also see HgLogCommand#changeset(Nodeid) |
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98 final int csetRevIndex = new CsetParamKeeper(repo).set(nid).get(); |
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99 return range(csetRevIndex, csetRevIndex); |
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100 } |
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101 |
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102 public HgManifestCommand dirs(boolean include) { |
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103 // XXX whether directories with directories only are include or not |
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104 // now lists only directories with files |
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105 needDirs = include; |
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106 return this; |
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107 } |
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108 |
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109 /** |
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110 * Limit manifest walk to a subset of files. |
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111 * @param pathMatcher - filter, pass <code>null</code> to clear. |
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112 * @return <code>this</code> instance for convenience |
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113 */ |
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114 public HgManifestCommand match(Path.Matcher pathMatcher) { |
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115 matcher = pathMatcher; |
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116 return this; |
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117 } |
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118 |
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119 /** |
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120 * With all parameters set, execute the command. |
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121 * |
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122 * @param handler - callback to get the outcome |
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123 * @throws HgCallbackTargetException propagated exception from the handler |
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124 * @throws HgException subclass thereof to indicate specific issue with the command arguments or repository state |
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125 * @throws CancelledException if execution of the command was cancelled |
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126 * @throws IllegalArgumentException if handler is <code>null</code> |
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127 * @throws ConcurrentModificationException if this command is already in use (running) |
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128 */ |
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129 public void execute(HgManifestHandler handler) throws HgCallbackTargetException, HgException, CancelledException { |
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130 if (handler == null) { |
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131 throw new IllegalArgumentException(); |
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132 } |
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133 if (visitor != null) { |
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134 throw new ConcurrentModificationException(); |
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135 } |
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136 try { |
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137 visitor = handler; |
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138 mediator.start(getCancelSupport(handler, true)); |
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139 repo.getManifest().walk(startRev, endRev, mediator); |
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140 mediator.checkFailure(); |
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141 } catch (HgRuntimeException ex) { |
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142 throw new HgLibraryFailureException(ex); |
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143 } finally { |
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144 mediator.done(); |
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145 visitor = null; |
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146 } |
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147 } |
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148 |
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149 // I'd rather let HgManifestCommand implement HgManifest.Inspector directly, but this pollutes API alot |
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150 private class Mediator implements HgManifest.Inspector { |
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151 // file names are likely to repeat in each revision, hence caching of Paths. |
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152 // However, once HgManifest.Inspector switches to Path objects, perhaps global Path pool |
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153 // might be more effective? |
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154 private PathPool pathPool; |
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155 private List<HgFileRevision> manifestContent; |
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156 private Nodeid manifestNodeid; |
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157 private Exception failure; |
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158 private CancelSupport cancelHelper; |
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159 |
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160 public void start(CancelSupport cs) { |
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161 assert cs != null; |
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162 // Manifest keeps normalized paths |
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163 pathPool = new PathPool(new PathRewrite.Empty()); |
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164 cancelHelper = cs; |
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165 } |
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166 |
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167 public void done() { |
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168 manifestContent = null; |
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169 pathPool = null; |
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170 } |
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171 |
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172 private void recordFailure(HgCallbackTargetException ex) { |
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173 failure = ex; |
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174 } |
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175 private void recordCancel(CancelledException ex) { |
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176 failure = ex; |
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177 } |
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178 |
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179 public void checkFailure() throws HgCallbackTargetException, CancelledException { |
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180 // TODO post-1.0 perhaps, can combine this code (record/checkFailure) for reuse in more classes (e.g. in Revlog) |
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181 if (failure instanceof HgCallbackTargetException) { |
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182 HgCallbackTargetException ex = (HgCallbackTargetException) failure; |
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183 failure = null; |
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184 throw ex; |
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185 } |
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186 if (failure instanceof CancelledException) { |
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187 CancelledException ex = (CancelledException) failure; |
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188 failure = null; |
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189 throw ex; |
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190 } |
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191 } |
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192 |
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193 public boolean begin(int manifestRevision, Nodeid nid, int changelogRevision) throws HgRuntimeException { |
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194 if (needDirs && manifestContent == null) { |
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195 manifestContent = new LinkedList<HgFileRevision>(); |
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196 } |
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197 try { |
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198 visitor.begin(manifestNodeid = nid); |
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199 cancelHelper.checkCancelled(); |
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200 return true; |
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201 } catch (HgCallbackTargetException ex) { |
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202 recordFailure(ex); |
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203 return false; |
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204 } catch (CancelledException ex) { |
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205 recordCancel(ex); |
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206 return false; |
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207 } |
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208 } |
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209 public boolean end(int revision) throws HgRuntimeException { |
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210 try { |
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211 if (needDirs) { |
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212 LinkedHashMap<Path, LinkedList<HgFileRevision>> breakDown = new LinkedHashMap<Path, LinkedList<HgFileRevision>>(); |
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213 for (HgFileRevision fr : manifestContent) { |
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214 Path filePath = fr.getPath(); |
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215 Path dirPath = pathPool.parent(filePath); |
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216 LinkedList<HgFileRevision> revs = breakDown.get(dirPath); |
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217 if (revs == null) { |
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218 revs = new LinkedList<HgFileRevision>(); |
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219 breakDown.put(dirPath, revs); |
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220 } |
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221 revs.addLast(fr); |
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222 } |
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223 for (Path dir : breakDown.keySet()) { |
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224 visitor.dir(dir); |
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225 cancelHelper.checkCancelled(); |
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226 for (HgFileRevision fr : breakDown.get(dir)) { |
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227 visitor.file(fr); |
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228 } |
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229 } |
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230 manifestContent.clear(); |
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231 } |
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232 visitor.end(manifestNodeid); |
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233 cancelHelper.checkCancelled(); |
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234 return true; |
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235 } catch (HgCallbackTargetException ex) { |
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236 recordFailure(ex); |
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237 return false; |
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238 } catch (CancelledException ex) { |
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239 recordCancel(ex); |
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240 return false; |
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241 } finally { |
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242 manifestNodeid = null; |
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243 } |
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244 } |
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245 |
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246 public boolean next(Nodeid nid, Path fname, Flags flags) throws HgRuntimeException { |
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247 if (matcher != null && !matcher.accept(fname)) { |
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248 return true; |
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249 } |
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250 try { |
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251 HgFileRevision fr = new HgFileRevision(repo, nid, flags, fname); |
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252 if (needDirs) { |
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253 manifestContent.add(fr); |
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254 } else { |
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255 visitor.file(fr); |
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256 } |
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257 return true; |
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258 } catch (HgCallbackTargetException ex) { |
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259 recordFailure(ex); |
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260 return false; |
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261 } |
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262 } |
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263 } |
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264 } |