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annotate src/org/tmatesoft/hg/core/LogCommand.java @ 79:5f9635c01681

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author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 25 Jan 2011 02:26:06 +0100
parents c677e1593919
children 4222b04f34ee
rev   line source
64
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
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15 * contact TMate Software at support@svnkit.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.Changeset;
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30 import org.tmatesoft.hg.repo.HgRepository;
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31 import org.tmatesoft.hg.repo.StatusCollector;
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32 import org.tmatesoft.hg.util.PathPool;
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33
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34
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35 /**
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36 * <pre>
70
993f6f8e1314 Test for log command
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37 * new LogCommand().limit(20).branch("maintenance-2.1").user("me").execute(new MyHandler());
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38 * </pre>
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39 * Not thread-safe (each thread has to use own {@link LogCommand} instance).
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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 LogCommand implements Changeset.Inspector {
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45
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46 private final HgRepository repo;
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47 private Set<String> users;
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48 private Set<String> branches;
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49 private int limit = 0, count = 0;
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50 private int startRev = 0, endRev = TIP;
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51 private Handler delegate;
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52 private Calendar date;
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53 private Path file;
64
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54 private Cset changeset;
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55
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56 public LogCommand(HgRepository hgRepo) {
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57 this.repo = hgRepo;
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58 }
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59
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60 /**
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61 * Limit search to specified user. Multiple user names may be specified.
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62 * @param user - full or partial name of the user, case-insensitive, non-null.
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63 * @return <code>this</code> instance for convenience
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64 */
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65 public LogCommand user(String user) {
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66 if (user == null) {
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67 throw new IllegalArgumentException();
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68 }
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69 if (users == null) {
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70 users = new TreeSet<String>();
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71 }
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72 users.add(user.toLowerCase());
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73 return this;
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74 }
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75
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76 /**
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77 * Limit search to specified branch. Multiple branch specification possible (changeset from any of these
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78 * would be included in result). If unspecified, all branches are considered.
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79 * @param branch - branch name, case-sensitive, non-null.
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80 * @return <code>this</code> instance for convenience
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81 */
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82 public LogCommand branch(String branch) {
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83 if (branch == null) {
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84 throw new IllegalArgumentException();
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85 }
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86 if (branches == null) {
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87 branches = new TreeSet<String>();
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88 }
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89 branches.add(branch);
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90 return this;
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91 }
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92
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93 // limit search to specific date
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94 // multiple?
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95 public LogCommand date(Calendar date) {
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96 this.date = date;
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97 // FIXME implement
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98 // isSet(field) - false => don't use in detection of 'same date'
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99 throw HgRepository.notImplemented();
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100 }
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101
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102 /**
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103 *
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104 * @param num - number of changeset to produce. Pass 0 to clear the limit.
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105 * @return <code>this</code> instance for convenience
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106 */
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107 public LogCommand limit(int num) {
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108 limit = num;
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109 return this;
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110 }
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111
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112 /**
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113 * Limit to specified subset of Changelog, [min(rev1,rev2), max(rev1,rev2)], inclusive.
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114 * Revision may be specified with {@link HgRepository#TIP}
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115 * @param rev1
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116 * @param rev2
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117 * @return <code>this</code> instance for convenience
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118 */
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119 public LogCommand range(int rev1, int rev2) {
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120 if (rev1 != TIP && rev2 != TIP) {
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121 startRev = rev2 < rev1 ? rev2 : rev1;
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122 endRev = startRev == rev2 ? rev1 : rev2;
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123 } else if (rev1 == TIP && rev2 != TIP) {
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124 startRev = rev2;
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125 endRev = rev1;
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126 } else {
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127 startRev = rev1;
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128 endRev = rev2;
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129 }
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130 return this;
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131 }
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132
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133 /**
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134 * Visit history of a given file only.
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135 * @param file path relative to repository root. Pass <code>null</code> to reset.
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136 */
64
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137 public LogCommand file(Path file) {
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138 // multiple? Bad idea, would need to include extra method into Handler to tell start of next file
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139 // implicit --follow in this case
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140 this.file = file;
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141 return this;
64
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142 }
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143
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144 /**
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145 * Similar to {@link #execute(org.tmatesoft.hg.repo.Changeset.Inspector)}, collects and return result as a list.
64
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146 */
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147 public List<Cset> execute() {
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148 CollectHandler collector = new CollectHandler();
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149 execute(collector);
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150 return collector.getChanges();
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151 }
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152
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153 /**
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154 *
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155 * @param inspector
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156 * @throws IllegalArgumentException when inspector argument is null
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157 * @throws ConcurrentModificationException if this log command instance is already running
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158 */
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159 public void execute(Handler handler) {
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160 if (handler == null) {
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161 throw new IllegalArgumentException();
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162 }
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163 if (delegate != null) {
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164 throw new ConcurrentModificationException();
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165 }
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166 try {
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167 delegate = handler;
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168 count = 0;
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169 changeset = new Cset(new StatusCollector(repo), new PathPool(repo.getPathHelper()));
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170 if (file == null) {
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171 repo.getChangelog().range(startRev, endRev, this);
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172 } else {
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173 repo.getFileNode(file).history(startRev, endRev, this);
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174 }
64
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175 } finally {
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176 delegate = null;
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177 changeset = null;
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178 }
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179 }
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180
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181 //
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182
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183 public void next(int revisionNumber, Nodeid nodeid, Changeset cset) {
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184 if (limit > 0 && count >= limit) {
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185 return;
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186 }
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187 if (branches != null && !branches.contains(cset.branch())) {
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188 return;
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189 }
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190 if (users != null) {
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191 String csetUser = cset.user().toLowerCase();
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192 boolean found = false;
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193 for (String u : users) {
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194 if (csetUser.indexOf(u) != -1) {
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195 found = true;
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196 break;
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197 }
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198 }
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199 if (!found) {
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200 return;
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201 }
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202 }
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203 if (date != null) {
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204 // FIXME
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205 }
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206 count++;
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207 changeset.init(revisionNumber, nodeid, cset);
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208 delegate.next(changeset);
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209 }
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210
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211 public interface Handler {
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212 /**
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213 * @param changeset not necessarily a distinct instance each time, {@link Cset#clone() clone()} if need a copy.
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214 */
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215 void next(Cset changeset);
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216 }
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217
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218 public static class CollectHandler implements Handler {
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219 private final List<Cset> result = new LinkedList<Cset>();
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220
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221 public List<Cset> getChanges() {
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222 return Collections.unmodifiableList(result);
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223 }
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224
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225 public void next(Cset changeset) {
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226 result.add(changeset.clone());
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227 }
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228 }
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229
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230 public static final class FileRevision {
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231 private final HgRepository repo;
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232 private final Nodeid revision;
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233 private final Path path;
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234
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235 public FileRevision(HgRepository hgRepo, Nodeid rev, Path p) {
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236 if (hgRepo == null || rev == null || p == null) {
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237 throw new IllegalArgumentException();
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238 }
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239 repo = hgRepo;
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240 revision = rev;
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241 path = p;
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242 }
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243
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244 public Path getPath() {
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245 return path;
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246 }
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247 public Nodeid getRevision() {
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248 return revision;
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249 }
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250 public byte[] getContent() {
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251 // XXX Content wrapper, to allow formats other than byte[], e.g. Stream, DataAccess, etc?
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252 return repo.getFileNode(path).content();
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253 }
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254 }
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255 }