Mercurial > jhg
annotate src/org/tmatesoft/hg/core/HgLogCommand.java @ 144:44185c4a850c
Samples updated
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Fri, 18 Feb 2011 01:10:08 +0100 |
parents | 37a34044e6bd |
children | 1a7a9a20e1f9 |
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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.util.Calendar; |
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22 import java.util.Collections; |
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23 import java.util.ConcurrentModificationException; |
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24 import java.util.LinkedList; |
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25 import java.util.List; |
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26 import java.util.Set; |
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27 import java.util.TreeSet; |
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28 |
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29 import org.tmatesoft.hg.repo.HgChangelog.Changeset; |
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30 import org.tmatesoft.hg.repo.HgChangelog; |
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31 import org.tmatesoft.hg.repo.HgDataFile; |
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32 import org.tmatesoft.hg.repo.HgRepository; |
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33 import org.tmatesoft.hg.repo.HgStatusCollector; |
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34 import org.tmatesoft.hg.util.Path; |
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35 import org.tmatesoft.hg.util.PathPool; |
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36 import org.tmatesoft.hg.util.PathRewrite; |
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37 |
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38 |
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39 /** |
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40 * Access to changelog, 'hg log' command counterpart. |
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41 * |
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42 * <pre> |
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43 * Usage: |
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44 * new LogCommand().limit(20).branch("maintenance-2.1").user("me").execute(new MyHandler()); |
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45 * </pre> |
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46 * Not thread-safe (each thread has to use own {@link HgLogCommand} instance). |
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47 * |
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48 * @author Artem Tikhomirov |
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49 * @author TMate Software Ltd. |
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50 */ |
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51 public class HgLogCommand implements HgChangelog.Inspector { |
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52 |
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53 private final HgRepository repo; |
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54 private Set<String> users; |
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55 private Set<String> branches; |
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56 private int limit = 0, count = 0; |
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57 private int startRev = 0, endRev = TIP; |
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58 private Handler delegate; |
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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 HgChangeset changeset; |
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63 |
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64 public HgLogCommand(HgRepository hgRepo) { |
107 | 65 repo = hgRepo; |
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66 } |
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67 |
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68 /** |
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69 * Limit search to specified user. Multiple user names may be specified. |
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70 * @param user - full or partial name of the user, case-insensitive, non-null. |
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71 * @return <code>this</code> instance for convenience |
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72 */ |
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73 public HgLogCommand user(String user) { |
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74 if (user == null) { |
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75 throw new IllegalArgumentException(); |
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76 } |
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77 if (users == null) { |
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78 users = new TreeSet<String>(); |
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79 } |
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80 users.add(user.toLowerCase()); |
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81 return this; |
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82 } |
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83 |
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84 /** |
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85 * Limit search to specified branch. Multiple branch specification possible (changeset from any of these |
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86 * would be included in result). If unspecified, all branches are considered. |
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87 * @param branch - branch name, case-sensitive, non-null. |
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88 * @return <code>this</code> instance for convenience |
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89 */ |
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90 public HgLogCommand branch(String branch) { |
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91 if (branch == null) { |
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92 throw new IllegalArgumentException(); |
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93 } |
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94 if (branches == null) { |
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95 branches = new TreeSet<String>(); |
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96 } |
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97 branches.add(branch); |
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98 return this; |
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99 } |
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100 |
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101 // limit search to specific date |
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102 // multiple? |
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103 public HgLogCommand date(Calendar date) { |
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104 this.date = date; |
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105 // FIXME implement |
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106 // isSet(field) - false => don't use in detection of 'same date' |
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107 throw HgRepository.notImplemented(); |
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108 } |
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109 |
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110 /** |
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111 * |
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112 * @param num - number of changeset to produce. Pass 0 to clear the limit. |
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113 * @return <code>this</code> instance for convenience |
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114 */ |
131
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115 public HgLogCommand limit(int num) { |
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116 limit = num; |
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117 return this; |
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118 } |
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119 |
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120 /** |
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121 * Limit to specified subset of Changelog, [min(rev1,rev2), max(rev1,rev2)], inclusive. |
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122 * Revision may be specified with {@link HgRepository#TIP} |
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123 * @param rev1 |
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124 * @param rev2 |
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125 * @return <code>this</code> instance for convenience |
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126 */ |
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127 public HgLogCommand range(int rev1, int rev2) { |
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128 if (rev1 != TIP && rev2 != TIP) { |
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129 startRev = rev2 < rev1 ? rev2 : rev1; |
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130 endRev = startRev == rev2 ? rev1 : rev2; |
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131 } else if (rev1 == TIP && rev2 != TIP) { |
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132 startRev = rev2; |
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133 endRev = rev1; |
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134 } else { |
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135 startRev = rev1; |
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136 endRev = rev2; |
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137 } |
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138 return this; |
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139 } |
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140 |
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141 /** |
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142 * Visit history of a given file only. |
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143 * @param file path relative to repository root. Pass <code>null</code> to reset. |
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144 * @param followCopyRename true to report changesets of the original file(-s), if copy/rename ever occured to the file. |
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145 */ |
131
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146 public HgLogCommand file(Path file, boolean followCopyRename) { |
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147 // multiple? Bad idea, would need to include extra method into Handler to tell start of next file |
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148 this.file = file; |
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149 followHistory = followCopyRename; |
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150 return this; |
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151 } |
142
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152 |
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153 /** |
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154 * Handy analog of {@link #file(Path, boolean)} when clients' paths come from filesystem and need conversion to repository's |
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155 */ |
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156 public HgLogCommand file(String file, boolean followCopyRename) { |
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157 return file(Path.create(repo.getToRepoPathHelper().rewrite(file)), followCopyRename); |
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158 } |
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159 |
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160 /** |
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161 * Similar to {@link #execute(org.tmatesoft.hg.repo.Changeset.Inspector)}, collects and return result as a list. |
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162 */ |
129
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163 public List<HgChangeset> execute() { |
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164 CollectHandler collector = new CollectHandler(); |
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165 execute(collector); |
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166 return collector.getChanges(); |
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167 } |
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168 |
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169 /** |
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170 * |
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171 * @param inspector |
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172 * @throws IllegalArgumentException when inspector argument is null |
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173 * @throws ConcurrentModificationException if this log command instance is already running |
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174 */ |
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175 public void execute(Handler handler) { |
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176 if (handler == null) { |
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177 throw new IllegalArgumentException(); |
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178 } |
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179 if (delegate != null) { |
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180 throw new ConcurrentModificationException(); |
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181 } |
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182 try { |
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183 delegate = handler; |
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184 count = 0; |
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185 HgStatusCollector statusCollector = new HgStatusCollector(repo); |
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186 // files listed in a changeset don't need their names to be rewritten (they are normalized already) |
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187 PathPool pp = new PathPool(new PathRewrite.Empty()); |
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188 // #file(String, boolean) above may utilize PathPool as well. CommandContext? |
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189 statusCollector.setPathPool(pp); |
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190 changeset = new HgChangeset(statusCollector, pp); |
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191 if (file == null) { |
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192 repo.getChangelog().range(startRev, endRev, this); |
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193 } else { |
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194 HgDataFile fileNode = repo.getFileNode(file); |
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195 fileNode.history(startRev, endRev, this); |
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196 if (fileNode.isCopy()) { |
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197 // even if we do not follow history, report file rename |
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198 do { |
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199 if (handler instanceof FileHistoryHandler) { |
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200 FileRevision src = new FileRevision(repo, fileNode.getCopySourceRevision(), fileNode.getCopySourceName()); |
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201 FileRevision dst = new FileRevision(repo, fileNode.getRevision(0), fileNode.getPath()); |
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202 ((FileHistoryHandler) handler).copy(src, dst); |
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203 } |
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204 if (limit > 0 && count >= limit) { |
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205 // if limit reach, follow is useless. |
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206 break; |
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207 } |
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208 if (followHistory) { |
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209 fileNode = repo.getFileNode(fileNode.getCopySourceName()); |
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210 fileNode.history(this); |
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211 } |
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212 } while (followHistory && fileNode.isCopy()); |
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213 } |
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214 } |
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215 } finally { |
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216 delegate = null; |
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217 changeset = null; |
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218 } |
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219 } |
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220 |
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221 // |
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222 |
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223 public void next(int revisionNumber, Nodeid nodeid, Changeset cset) { |
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224 if (limit > 0 && count >= limit) { |
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225 return; |
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226 } |
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227 if (branches != null && !branches.contains(cset.branch())) { |
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228 return; |
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229 } |
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230 if (users != null) { |
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231 String csetUser = cset.user().toLowerCase(); |
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232 boolean found = false; |
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233 for (String u : users) { |
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234 if (csetUser.indexOf(u) != -1) { |
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235 found = true; |
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236 break; |
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237 } |
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238 } |
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239 if (!found) { |
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240 return; |
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241 } |
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242 } |
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243 if (date != null) { |
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244 // FIXME |
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245 } |
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246 count++; |
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247 changeset.init(revisionNumber, nodeid, cset); |
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248 delegate.next(changeset); |
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249 } |
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250 |
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251 public interface Handler { |
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252 /** |
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253 * @param changeset not necessarily a distinct instance each time, {@link HgChangeset#clone() clone()} if need a copy. |
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254 */ |
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255 void next(HgChangeset changeset); |
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256 } |
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257 |
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258 /** |
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259 * When {@link HgLogCommand} is executed against file, handler passed to {@link HgLogCommand#execute(Handler)} may optionally |
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260 * implement this interface to get information about file renames. Method {@link #copy(FileRevision, FileRevision)} would |
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261 * get invoked prior any changeset of the original file (if file history being followed) is reported via {@link #next(HgChangeset)}. |
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262 * |
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263 * For {@link HgLogCommand#file(Path, boolean)} with renamed file path and follow argument set to false, |
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264 * {@link #copy(FileRevision, FileRevision)} would be invoked for the first copy/rename in the history of the file, but not |
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265 * followed by any changesets. |
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266 * |
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267 * @author Artem Tikhomirov |
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268 * @author TMate Software Ltd. |
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269 */ |
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270 public interface FileHistoryHandler extends Handler { |
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271 // XXX perhaps, should distinguish copy from rename? And what about merged revisions and following them? |
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272 void copy(FileRevision from, FileRevision to); |
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273 } |
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274 |
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275 public static class CollectHandler implements Handler { |
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276 private final List<HgChangeset> result = new LinkedList<HgChangeset>(); |
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277 |
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278 public List<HgChangeset> getChanges() { |
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279 return Collections.unmodifiableList(result); |
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280 } |
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281 |
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282 public void next(HgChangeset changeset) { |
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283 result.add(changeset.clone()); |
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284 } |
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285 } |
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286 |
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287 public static final class FileRevision { |
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288 private final HgRepository repo; |
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289 private final Nodeid revision; |
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290 private final Path path; |
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291 |
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292 /*package-local*/FileRevision(HgRepository hgRepo, Nodeid rev, Path p) { |
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293 if (hgRepo == null || rev == null || p == null) { |
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294 throw new IllegalArgumentException(); |
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295 } |
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296 repo = hgRepo; |
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297 revision = rev; |
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298 path = p; |
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299 } |
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300 |
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301 public Path getPath() { |
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302 return path; |
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303 } |
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304 public Nodeid getRevision() { |
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305 return revision; |
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306 } |
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307 public byte[] getContent() { |
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308 // XXX Content wrapper, to allow formats other than byte[], e.g. Stream, DataAccess, etc? |
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309 return repo.getFileNode(path).content(revision); |
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310 } |
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311 } |
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312 } |