Mercurial > jhg
annotate src/org/tmatesoft/hg/core/HgLogCommand.java @ 221:04735ce6bed2
NPE when one of the flags is non-null
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Thu, 19 May 2011 04:45:52 +0200 |
parents | 41a778e3fd31 |
children | 1792b37650f2 |
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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.TIP; |
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20 |
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21 import java.io.IOException; |
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22 import java.util.Calendar; |
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23 import java.util.Collections; |
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24 import java.util.ConcurrentModificationException; |
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25 import java.util.LinkedList; |
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26 import java.util.List; |
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27 import java.util.Set; |
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28 import java.util.TreeSet; |
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29 |
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30 import org.tmatesoft.hg.repo.HgChangelog; |
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31 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset; |
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32 import org.tmatesoft.hg.repo.HgDataFile; |
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33 import org.tmatesoft.hg.repo.HgRepository; |
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34 import org.tmatesoft.hg.util.ByteChannel; |
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35 import org.tmatesoft.hg.util.CancelledException; |
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36 import org.tmatesoft.hg.util.Path; |
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37 import org.tmatesoft.hg.util.ProgressSupport; |
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38 |
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39 |
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40 /** |
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41 * Access to changelog, 'hg log' command counterpart. |
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42 * |
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43 * <pre> |
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44 * Usage: |
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45 * new LogCommand().limit(20).branch("maintenance-2.1").user("me").execute(new MyHandler()); |
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46 * </pre> |
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47 * Not thread-safe (each thread has to use own {@link HgLogCommand} instance). |
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48 * |
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49 * @author Artem Tikhomirov |
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50 * @author TMate Software Ltd. |
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51 */ |
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52 public class HgLogCommand extends HgAbstractCommand<HgLogCommand> implements HgChangelog.Inspector { |
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53 |
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54 private final HgRepository repo; |
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55 private Set<String> users; |
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56 private Set<String> branches; |
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57 private int limit = 0, count = 0; |
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58 private int startRev = 0, endRev = TIP; |
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59 private Calendar date; |
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60 private Path file; |
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61 private boolean followHistory; // makes sense only when file != null |
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62 private ChangesetTransformer csetTransform; |
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63 private HgChangelog.ParentWalker parentHelper; |
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64 |
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65 public HgLogCommand(HgRepository hgRepo) { |
107 | 66 repo = hgRepo; |
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67 } |
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68 |
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69 /** |
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70 * Limit search to specified user. Multiple user names may be specified. Once set, user names can't be |
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71 * cleared, use new command instance in such cases. |
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72 * @param user - full or partial name of the user, case-insensitive, non-null. |
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73 * @return <code>this</code> instance for convenience |
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74 * @throws IllegalArgumentException when argument is null |
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75 */ |
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76 public HgLogCommand user(String user) { |
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77 if (user == null) { |
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78 throw new IllegalArgumentException(); |
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79 } |
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80 if (users == null) { |
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81 users = new TreeSet<String>(); |
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82 } |
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83 users.add(user.toLowerCase()); |
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84 return this; |
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85 } |
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86 |
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87 /** |
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88 * Limit search to specified branch. Multiple branch specification possible (changeset from any of these |
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89 * would be included in result). If unspecified, all branches are considered. There's no way to clean branch selection |
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90 * once set, create fresh new command instead. |
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91 * @param branch - branch name, case-sensitive, non-null. |
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92 * @return <code>this</code> instance for convenience |
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93 * @throws IllegalArgumentException when branch argument is null |
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94 */ |
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95 public HgLogCommand branch(String branch) { |
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96 if (branch == null) { |
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97 throw new IllegalArgumentException(); |
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98 } |
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99 if (branches == null) { |
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100 branches = new TreeSet<String>(); |
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101 } |
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102 branches.add(branch); |
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103 return this; |
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104 } |
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105 |
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106 // limit search to specific date |
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107 // multiple? |
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108 public HgLogCommand date(Calendar date) { |
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109 this.date = date; |
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110 // FIXME implement |
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111 // isSet(field) - false => don't use in detection of 'same date' |
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112 throw HgRepository.notImplemented(); |
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113 } |
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114 |
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115 /** |
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116 * |
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117 * @param num - number of changeset to produce. Pass 0 to clear the limit. |
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118 * @return <code>this</code> instance for convenience |
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119 */ |
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120 public HgLogCommand limit(int num) { |
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121 limit = num; |
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122 return this; |
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123 } |
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124 |
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125 /** |
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126 * Limit to specified subset of Changelog, [min(rev1,rev2), max(rev1,rev2)], inclusive. |
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127 * Revision may be specified with {@link HgRepository#TIP} |
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128 * @param rev1 - local revision number |
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129 * @param rev2 - local revision number |
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130 * @return <code>this</code> instance for convenience |
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131 */ |
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132 public HgLogCommand range(int rev1, int rev2) { |
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133 if (rev1 != TIP && rev2 != TIP) { |
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134 startRev = rev2 < rev1 ? rev2 : rev1; |
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135 endRev = startRev == rev2 ? rev1 : rev2; |
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136 } else if (rev1 == TIP && rev2 != TIP) { |
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137 startRev = rev2; |
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138 endRev = rev1; |
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139 } else { |
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140 startRev = rev1; |
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141 endRev = rev2; |
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142 } |
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143 return this; |
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144 } |
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145 |
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146 /** |
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147 * Visit history of a given file only. |
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148 * @param file path relative to repository root. Pass <code>null</code> to reset. |
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149 * @param followCopyRename true to report changesets of the original file(-s), if copy/rename ever occured to the file. |
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150 */ |
131
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151 public HgLogCommand file(Path file, boolean followCopyRename) { |
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152 // multiple? Bad idea, would need to include extra method into Handler to tell start of next file |
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153 this.file = file; |
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154 followHistory = followCopyRename; |
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155 return this; |
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156 } |
142
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157 |
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158 /** |
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159 * Handy analog of {@link #file(Path, boolean)} when clients' paths come from filesystem and need conversion to repository's |
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160 */ |
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161 public HgLogCommand file(String file, boolean followCopyRename) { |
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162 return file(Path.create(repo.getToRepoPathHelper().rewrite(file)), followCopyRename); |
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163 } |
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164 |
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165 /** |
154
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166 * Similar to {@link #execute(org.tmatesoft.hg.repo.RawChangeset.Inspector)}, collects and return result as a list. |
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167 */ |
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168 public List<HgChangeset> execute() throws HgDataStreamException { |
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169 CollectHandler collector = new CollectHandler(); |
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170 try { |
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171 execute(collector); |
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172 } catch (HgCallbackTargetException ex) { |
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173 // can't happen as long as our CollectHandler doesn't throw any exception |
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174 throw new HgBadStateException(ex.getCause()); |
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175 } catch (CancelledException ex) { |
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176 // can't happen, see above |
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177 throw new HgBadStateException(ex); |
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178 } |
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179 return collector.getChanges(); |
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180 } |
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181 |
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182 /** |
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183 * |
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184 * @param handler callback to process changesets. |
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185 * @throws IllegalArgumentException when inspector argument is null |
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186 * @throws ConcurrentModificationException if this log command instance is already running |
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187 */ |
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188 public void execute(HgChangesetHandler handler) throws HgDataStreamException, HgCallbackTargetException, CancelledException { |
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189 if (handler == null) { |
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190 throw new IllegalArgumentException(); |
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191 } |
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192 if (csetTransform != null) { |
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193 throw new ConcurrentModificationException(); |
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194 } |
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195 final ProgressSupport progressHelper = getProgressSupport(handler); |
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196 try { |
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197 count = 0; |
195
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198 HgChangelog.ParentWalker pw = parentHelper; // leave it uninitialized unless we iterate whole repo |
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199 if (file == null) { |
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200 pw = getParentHelper(); |
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201 } |
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202 // ChangesetTransfrom creates a blank PathPool, and #file(String, boolean) above |
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203 // may utilize it as well. CommandContext? How about StatusCollector there as well? |
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204 csetTransform = new ChangesetTransformer(repo, handler, pw, progressHelper, getCancelSupport(handler)); |
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205 if (file == null) { |
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206 progressHelper.start(endRev - startRev + 1); |
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207 repo.getChangelog().range(startRev, endRev, this); |
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208 csetTransform.checkFailure(); |
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209 } else { |
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210 progressHelper.start(-1/*XXX enum const, or a dedicated method startUnspecified(). How about startAtLeast(int)?*/); |
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211 HgDataFile fileNode = repo.getFileNode(file); |
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212 fileNode.history(startRev, endRev, this); |
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213 csetTransform.checkFailure(); |
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214 if (fileNode.isCopy()) { |
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215 // even if we do not follow history, report file rename |
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216 do { |
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217 if (handler instanceof FileHistoryHandler) { |
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218 FileRevision src = new FileRevision(repo, fileNode.getCopySourceRevision(), fileNode.getCopySourceName()); |
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219 FileRevision dst = new FileRevision(repo, fileNode.getRevision(0), fileNode.getPath()); |
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220 try { |
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221 ((FileHistoryHandler) handler).copy(src, dst); |
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222 } catch (RuntimeException ex) { |
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223 throw new HgCallbackTargetException(ex).setRevision(fileNode.getCopySourceRevision()).setFileName(fileNode.getCopySourceName()); |
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224 } |
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225 } |
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226 if (limit > 0 && count >= limit) { |
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227 // if limit reach, follow is useless. |
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228 break; |
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229 } |
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230 if (followHistory) { |
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231 fileNode = repo.getFileNode(fileNode.getCopySourceName()); |
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232 fileNode.history(this); |
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233 csetTransform.checkFailure(); |
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234 } |
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235 } while (followHistory && fileNode.isCopy()); |
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236 } |
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237 } |
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238 } finally { |
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239 csetTransform = null; |
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240 progressHelper.done(); |
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241 } |
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242 } |
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243 |
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244 // |
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245 |
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246 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) { |
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247 if (limit > 0 && count >= limit) { |
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248 return; |
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249 } |
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250 if (branches != null && !branches.contains(cset.branch())) { |
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251 return; |
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252 } |
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253 if (users != null) { |
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254 String csetUser = cset.user().toLowerCase(); |
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255 boolean found = false; |
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256 for (String u : users) { |
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257 if (csetUser.indexOf(u) != -1) { |
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258 found = true; |
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259 break; |
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260 } |
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261 } |
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262 if (!found) { |
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263 return; |
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264 } |
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265 } |
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266 if (date != null) { |
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267 // FIXME |
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268 } |
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269 count++; |
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270 csetTransform.next(revisionNumber, nodeid, cset); |
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271 } |
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272 |
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273 private HgChangelog.ParentWalker getParentHelper() { |
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274 if (parentHelper == null) { |
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275 parentHelper = repo.getChangelog().new ParentWalker(); |
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276 parentHelper.init(); |
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277 } |
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278 return parentHelper; |
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279 } |
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280 |
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281 |
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282 /** |
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283 * @deprecated Use {@link HgChangesetHandler} instead. This interface is left temporarily for compatibility. |
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284 */ |
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285 @Deprecated() |
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286 public interface Handler extends HgChangesetHandler { |
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287 } |
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288 |
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289 /** |
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290 * When {@link HgLogCommand} is executed against file, handler passed to {@link HgLogCommand#execute(HgChangesetHandler)} may optionally |
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291 * implement this interface to get information about file renames. Method {@link #copy(FileRevision, FileRevision)} would |
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292 * get invoked prior any changeset of the original file (if file history being followed) is reported via {@link #next(HgChangeset)}. |
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293 * |
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294 * For {@link HgLogCommand#file(Path, boolean)} with renamed file path and follow argument set to false, |
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295 * {@link #copy(FileRevision, FileRevision)} would be invoked for the first copy/rename in the history of the file, but not |
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296 * followed by any changesets. |
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297 * |
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298 * @author Artem Tikhomirov |
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299 * @author TMate Software Ltd. |
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300 */ |
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301 public interface FileHistoryHandler extends HgChangesetHandler { |
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302 // XXX perhaps, should distinguish copy from rename? And what about merged revisions and following them? |
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303 void copy(FileRevision from, FileRevision to); |
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304 } |
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305 |
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306 public static class CollectHandler implements HgChangesetHandler { |
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307 private final List<HgChangeset> result = new LinkedList<HgChangeset>(); |
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308 |
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309 public List<HgChangeset> getChanges() { |
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310 return Collections.unmodifiableList(result); |
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311 } |
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312 |
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313 public void next(HgChangeset changeset) { |
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314 result.add(changeset.clone()); |
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315 } |
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316 } |
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317 |
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318 public static final class FileRevision { |
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319 private final HgRepository repo; |
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320 private final Nodeid revision; |
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321 private final Path path; |
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322 |
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323 /*package-local*/FileRevision(HgRepository hgRepo, Nodeid rev, Path p) { |
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324 if (hgRepo == null || rev == null || p == null) { |
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325 // since it's package local, it is our code to blame for non validated arguments |
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326 throw new HgBadStateException(); |
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327 } |
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328 repo = hgRepo; |
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329 revision = rev; |
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330 path = p; |
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331 } |
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332 |
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333 public Path getPath() { |
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334 return path; |
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335 } |
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336 public Nodeid getRevision() { |
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337 return revision; |
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338 } |
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339 public void putContentTo(ByteChannel sink) throws HgDataStreamException, IOException, CancelledException { |
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340 HgDataFile fn = repo.getFileNode(path); |
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341 int localRevision = fn.getLocalRevision(revision); |
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342 fn.contentWithFilters(localRevision, sink); |
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343 } |
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344 } |
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345 } |