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annotate src/org/tmatesoft/hg/core/LogCommand.java @ 129:645829962785

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core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 16 Feb 2011 20:32:29 +0100
parents b92a638764be
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19e9e220bf68 Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
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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
102
a3a2e5deb320 Updated contact address to support@hg4j.com
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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
129
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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.PathPool;
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35
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36
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37 /**
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38 * <pre>
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993f6f8e1314 Test for log command
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39 * new LogCommand().limit(20).branch("maintenance-2.1").user("me").execute(new MyHandler());
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40 * </pre>
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41 * Not thread-safe (each thread has to use own {@link LogCommand} instance).
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42 *
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43 * @author Artem Tikhomirov
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44 * @author TMate Software Ltd.
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45 */
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46 public class LogCommand implements HgChangelog.Inspector {
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47
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48 private final HgRepository repo;
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49 private Set<String> users;
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50 private Set<String> branches;
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51 private int limit = 0, count = 0;
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52 private int startRev = 0, endRev = TIP;
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53 private Handler delegate;
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54 private Calendar date;
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55 private Path file;
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56 private boolean followHistory; // makes sense only when file != null
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57 private HgChangeset changeset;
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58
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59 public LogCommand(HgRepository hgRepo) {
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7ec89d637f50 CatCommand
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60 repo = hgRepo;
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61 }
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63 /**
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64 * Limit search to specified user. Multiple user names may be specified.
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65 * @param user - full or partial name of the user, case-insensitive, non-null.
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66 * @return <code>this</code> instance for convenience
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67 */
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68 public LogCommand user(String user) {
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69 if (user == null) {
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70 throw new IllegalArgumentException();
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71 }
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72 if (users == null) {
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73 users = new TreeSet<String>();
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74 }
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75 users.add(user.toLowerCase());
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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 * Limit search to specified branch. Multiple branch specification possible (changeset from any of these
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81 * would be included in result). If unspecified, all branches are considered.
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82 * @param branch - branch name, case-sensitive, non-null.
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83 * @return <code>this</code> instance for convenience
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84 */
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85 public LogCommand branch(String branch) {
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86 if (branch == null) {
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87 throw new IllegalArgumentException();
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88 }
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89 if (branches == null) {
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90 branches = new TreeSet<String>();
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91 }
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92 branches.add(branch);
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93 return this;
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94 }
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95
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96 // limit search to specific date
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97 // multiple?
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98 public LogCommand date(Calendar date) {
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99 this.date = date;
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100 // FIXME implement
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101 // isSet(field) - false => don't use in detection of 'same date'
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102 throw HgRepository.notImplemented();
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103 }
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104
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105 /**
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106 *
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107 * @param num - number of changeset to produce. Pass 0 to clear the limit.
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108 * @return <code>this</code> instance for convenience
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109 */
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110 public LogCommand limit(int num) {
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111 limit = num;
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112 return this;
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113 }
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114
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115 /**
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116 * Limit to specified subset of Changelog, [min(rev1,rev2), max(rev1,rev2)], inclusive.
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117 * Revision may be specified with {@link HgRepository#TIP}
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118 * @param rev1
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119 * @param rev2
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120 * @return <code>this</code> instance for convenience
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121 */
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122 public LogCommand range(int rev1, int rev2) {
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123 if (rev1 != TIP && rev2 != TIP) {
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124 startRev = rev2 < rev1 ? rev2 : rev1;
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125 endRev = startRev == rev2 ? rev1 : rev2;
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126 } else if (rev1 == TIP && rev2 != TIP) {
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127 startRev = rev2;
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128 endRev = rev1;
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129 } else {
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130 startRev = rev1;
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131 endRev = rev2;
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132 }
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133 return this;
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134 }
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135
77
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136 /**
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137 * Visit history of a given file only.
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138 * @param file path relative to repository root. Pass <code>null</code> to reset.
80
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139 * @param followCopyRename true to report changesets of the original file(-s), if copy/rename ever occured to the file.
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140 */
80
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141 public LogCommand file(Path file, boolean followCopyRename) {
77
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142 // multiple? Bad idea, would need to include extra method into Handler to tell start of next file
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143 this.file = file;
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144 followHistory = followCopyRename;
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145 return this;
64
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146 }
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147
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148 /**
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149 * Similar to {@link #execute(org.tmatesoft.hg.repo.Changeset.Inspector)}, collects and return result as a list.
64
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150 */
129
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151 public List<HgChangeset> execute() {
64
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152 CollectHandler collector = new CollectHandler();
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153 execute(collector);
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154 return collector.getChanges();
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155 }
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156
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157 /**
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158 *
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159 * @param inspector
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160 * @throws IllegalArgumentException when inspector argument is null
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161 * @throws ConcurrentModificationException if this log command instance is already running
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162 */
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163 public void execute(Handler handler) {
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164 if (handler == null) {
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165 throw new IllegalArgumentException();
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166 }
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167 if (delegate != null) {
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168 throw new ConcurrentModificationException();
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169 }
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170 try {
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171 delegate = handler;
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172 count = 0;
129
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173 changeset = new HgChangeset(new HgStatusCollector(repo), new PathPool(repo.getPathHelper()));
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174 if (file == null) {
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175 repo.getChangelog().range(startRev, endRev, this);
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176 } else {
80
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177 HgDataFile fileNode = repo.getFileNode(file);
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178 fileNode.history(startRev, endRev, this);
126
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179 if (fileNode.isCopy()) {
80
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180 // even if we do not follow history, report file rename
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181 do {
126
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182 if (handler instanceof FileHistoryHandler) {
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183 FileRevision src = new FileRevision(repo, fileNode.getCopySourceRevision(), fileNode.getCopySourceName());
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184 FileRevision dst = new FileRevision(repo, fileNode.getRevision(0), fileNode.getPath());
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185 ((FileHistoryHandler) handler).copy(src, dst);
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186 }
80
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187 if (limit > 0 && count >= limit) {
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188 // if limit reach, follow is useless.
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189 break;
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190 }
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191 if (followHistory) {
126
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192 fileNode = repo.getFileNode(fileNode.getCopySourceName());
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193 fileNode.history(this);
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194 }
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195 } while (followHistory && fileNode.isCopy());
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196 }
77
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197 }
64
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198 } finally {
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199 delegate = null;
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200 changeset = null;
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201 }
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202 }
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203
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204 //
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205
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206 public void next(int revisionNumber, Nodeid nodeid, Changeset cset) {
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207 if (limit > 0 && count >= limit) {
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208 return;
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209 }
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210 if (branches != null && !branches.contains(cset.branch())) {
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211 return;
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212 }
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213 if (users != null) {
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214 String csetUser = cset.user().toLowerCase();
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215 boolean found = false;
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diff changeset
216 for (String u : users) {
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diff changeset
217 if (csetUser.indexOf(u) != -1) {
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diff changeset
218 found = true;
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diff changeset
219 break;
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diff changeset
220 }
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221 }
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diff changeset
222 if (!found) {
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223 return;
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diff changeset
224 }
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diff changeset
225 }
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diff changeset
226 if (date != null) {
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diff changeset
227 // FIXME
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diff changeset
228 }
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diff changeset
229 count++;
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diff changeset
230 changeset.init(revisionNumber, nodeid, cset);
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diff changeset
231 delegate.next(changeset);
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diff changeset
232 }
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diff changeset
233
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diff changeset
234 public interface Handler {
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diff changeset
235 /**
129
645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
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236 * @param changeset not necessarily a distinct instance each time, {@link HgChangeset#clone() clone()} if need a copy.
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237 */
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238 void next(HgChangeset changeset);
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239 }
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240
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241 /**
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242 * When {@link LogCommand} is executed against file, handler passed to {@link LogCommand#execute(Handler)} may optionally
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243 * implement this interface to get information about file renames. Method {@link #copy(FileRevision, FileRevision)} would
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244 * get invoked prior any changeset of the original file (if file history being followed) is reported via {@link #next(HgChangeset)}.
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245 *
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246 * For {@link LogCommand#file(Path, boolean)} with renamed file path and follow argument set to false,
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247 * {@link #copy(FileRevision, FileRevision)} would be invoked for the first copy/rename in the history of the file, but not
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248 * followed by any changesets.
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249 *
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250 * @author Artem Tikhomirov
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251 * @author TMate Software Ltd.
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252 */
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253 public interface FileHistoryHandler extends Handler {
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254 // XXX perhaps, should distinguish copy from rename? And what about merged revisions and following them?
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255 void copy(FileRevision from, FileRevision to);
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256 }
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257
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258 public static class CollectHandler implements Handler {
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259 private final List<HgChangeset> result = new LinkedList<HgChangeset>();
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260
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261 public List<HgChangeset> getChanges() {
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262 return Collections.unmodifiableList(result);
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263 }
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264
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265 public void next(HgChangeset changeset) {
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266 result.add(changeset.clone());
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267 }
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268 }
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270 public static final class FileRevision {
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271 private final HgRepository repo;
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272 private final Nodeid revision;
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273 private final Path path;
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274
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275 /*package-local*/FileRevision(HgRepository hgRepo, Nodeid rev, Path p) {
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276 if (hgRepo == null || rev == null || p == null) {
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277 throw new IllegalArgumentException();
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278 }
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279 repo = hgRepo;
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280 revision = rev;
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281 path = p;
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282 }
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284 public Path getPath() {
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285 return path;
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286 }
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287 public Nodeid getRevision() {
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288 return revision;
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289 }
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290 public byte[] getContent() {
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291 // XXX Content wrapper, to allow formats other than byte[], e.g. Stream, DataAccess, etc?
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292 return repo.getFileNode(path).content(revision);
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293 }
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294 }
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295 }