Mercurial > jhg

annotate src/org/tmatesoft/hg/core/HgLogCommand.java @ 178:62665d8f0686

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Complete logic to discover all branches missing locally. Most of wire protocol in HgRemoteRepository
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 06 Apr 2011 01:34:16 +0200
parents d5268ca7715b
children 37f3d4a596e4
rev   line source
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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
154
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30 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
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31 import org.tmatesoft.hg.repo.HgChangelog;
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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.repo.HgStatusCollector;
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35 import org.tmatesoft.hg.util.ByteChannel;
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36 import org.tmatesoft.hg.util.CancelledException;
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37 import org.tmatesoft.hg.util.Path;
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38 import org.tmatesoft.hg.util.PathPool;
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39 import org.tmatesoft.hg.util.PathRewrite;
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42 /**
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43 * Access to changelog, 'hg log' command counterpart.
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44 *
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45 * <pre>
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46 * Usage:
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47 * new LogCommand().limit(20).branch("maintenance-2.1").user("me").execute(new MyHandler());
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48 * </pre>
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49 * Not thread-safe (each thread has to use own {@link HgLogCommand} instance).
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50 *
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51 * @author Artem Tikhomirov
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52 * @author TMate Software Ltd.
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53 */
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54 public class HgLogCommand implements HgChangelog.Inspector {
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56 private final HgRepository repo;
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57 private Set<String> users;
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58 private Set<String> branches;
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59 private int limit = 0, count = 0;
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60 private int startRev = 0, endRev = TIP;
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61 private Handler delegate;
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62 private Calendar date;
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63 private Path file;
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64 private boolean followHistory; // makes sense only when file != null
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65 private HgChangeset changeset;
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66
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67 public HgLogCommand(HgRepository hgRepo) {
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68 repo = hgRepo;
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69 }
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71 /**
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72 * Limit search to specified user. Multiple user names may be specified. Once set, user names can't be
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73 * cleared, use new command instance in such cases.
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74 * @param user - full or partial name of the user, case-insensitive, non-null.
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75 * @return <code>this</code> instance for convenience
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76 * @throws IllegalArgumentException when argument is null
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77 */
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78 public HgLogCommand user(String user) {
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79 if (user == null) {
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80 throw new IllegalArgumentException();
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81 }
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82 if (users == null) {
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83 users = new TreeSet<String>();
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84 }
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85 users.add(user.toLowerCase());
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86 return this;
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87 }
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89 /**
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90 * Limit search to specified branch. Multiple branch specification possible (changeset from any of these
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91 * would be included in result). If unspecified, all branches are considered. There's no way to clean branch selection
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92 * once set, create fresh new command instead.
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93 * @param branch - branch name, case-sensitive, non-null.
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94 * @return <code>this</code> instance for convenience
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95 * @throws IllegalArgumentException when branch argument is null
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96 */
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97 public HgLogCommand branch(String branch) {
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98 if (branch == null) {
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99 throw new IllegalArgumentException();
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100 }
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101 if (branches == null) {
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102 branches = new TreeSet<String>();
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103 }
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104 branches.add(branch);
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105 return this;
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106 }
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108 // limit search to specific date
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109 // multiple?
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110 public HgLogCommand date(Calendar date) {
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111 this.date = date;
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112 // FIXME implement
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113 // isSet(field) - false => don't use in detection of 'same date'
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114 throw HgRepository.notImplemented();
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115 }
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116
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117 /**
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118 *
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119 * @param num - number of changeset to produce. Pass 0 to clear the limit.
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120 * @return <code>this</code> instance for convenience
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121 */
131
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122 public HgLogCommand limit(int num) {
64
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123 limit = num;
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124 return this;
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125 }
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126
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127 /**
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128 * Limit to specified subset of Changelog, [min(rev1,rev2), max(rev1,rev2)], inclusive.
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129 * Revision may be specified with {@link HgRepository#TIP}
148
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130 * @param rev1 - local revision number
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131 * @param rev2 - local revision number
64
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132 * @return <code>this</code> instance for convenience
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133 */
131
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134 public HgLogCommand range(int rev1, int rev2) {
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135 if (rev1 != TIP && rev2 != TIP) {
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136 startRev = rev2 < rev1 ? rev2 : rev1;
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137 endRev = startRev == rev2 ? rev1 : rev2;
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138 } else if (rev1 == TIP && rev2 != TIP) {
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139 startRev = rev2;
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140 endRev = rev1;
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141 } else {
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142 startRev = rev1;
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143 endRev = rev2;
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144 }
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145 return this;
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146 }
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147
77
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148 /**
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149 * Visit history of a given file only.
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150 * @param file path relative to repository root. Pass <code>null</code> to reset.
80
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151 * @param followCopyRename true to report changesets of the original file(-s), if copy/rename ever occured to the file.
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152 */
131
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153 public HgLogCommand file(Path file, boolean followCopyRename) {
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154 // multiple? Bad idea, would need to include extra method into Handler to tell start of next file
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155 this.file = file;
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156 followHistory = followCopyRename;
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157 return this;
64
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158 }
142
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159
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160 /**
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161 * Handy analog of {@link #file(Path, boolean)} when clients' paths come from filesystem and need conversion to repository's
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162 */
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163 public HgLogCommand file(String file, boolean followCopyRename) {
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164 return file(Path.create(repo.getToRepoPathHelper().rewrite(file)), followCopyRename);
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165 }
64
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166
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167 /**
154
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168 * Similar to {@link #execute(org.tmatesoft.hg.repo.RawChangeset.Inspector)}, collects and return result as a list.
64
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169 */
157
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170 public List<HgChangeset> execute() throws HgException {
64
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171 CollectHandler collector = new CollectHandler();
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172 execute(collector);
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173 return collector.getChanges();
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174 }
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175
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176 /**
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177 *
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178 * @param inspector
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179 * @throws IllegalArgumentException when inspector argument is null
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180 * @throws ConcurrentModificationException if this log command instance is already running
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181 */
157
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182 public void execute(Handler handler) throws HgException {
64
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183 if (handler == null) {
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184 throw new IllegalArgumentException();
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185 }
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186 if (delegate != null) {
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187 throw new ConcurrentModificationException();
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188 }
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189 try {
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190 delegate = handler;
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191 count = 0;
142
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192 HgStatusCollector statusCollector = new HgStatusCollector(repo);
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193 // files listed in a changeset don't need their names to be rewritten (they are normalized already)
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194 PathPool pp = new PathPool(new PathRewrite.Empty());
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195 // #file(String, boolean) above may utilize PathPool as well. CommandContext?
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196 statusCollector.setPathPool(pp);
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diff changeset
197 changeset = new HgChangeset(statusCollector, pp);
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diff changeset
198 if (file == null) {
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diff changeset
199 repo.getChangelog().range(startRev, endRev, this);
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diff changeset
200 } else {
80
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201 HgDataFile fileNode = repo.getFileNode(file);
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202 fileNode.history(startRev, endRev, this);
126
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diff changeset
203 if (fileNode.isCopy()) {
80
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diff changeset
204 // even if we do not follow history, report file rename
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diff changeset
205 do {
126
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diff changeset
206 if (handler instanceof FileHistoryHandler) {
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diff changeset
207 FileRevision src = new FileRevision(repo, fileNode.getCopySourceRevision(), fileNode.getCopySourceName());
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diff changeset
208 FileRevision dst = new FileRevision(repo, fileNode.getRevision(0), fileNode.getPath());
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diff changeset
209 ((FileHistoryHandler) handler).copy(src, dst);
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diff changeset
210 }
80
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diff changeset
211 if (limit > 0 && count >= limit) {
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diff changeset
212 // if limit reach, follow is useless.
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diff changeset
213 break;
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diff changeset
214 }
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diff changeset
215 if (followHistory) {
126
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diff changeset
216 fileNode = repo.getFileNode(fileNode.getCopySourceName());
80
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diff changeset
217 fileNode.history(this);
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diff changeset
218 }
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diff changeset
219 } while (followHistory && fileNode.isCopy());
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diff changeset
220 }
77
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diff changeset
221 }
64
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222 } finally {
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223 delegate = null;
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224 changeset = null;
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225 }
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226 }
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227
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228 //
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diff changeset
229
154
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diff changeset
230 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) {
64
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diff changeset
231 if (limit > 0 && count >= limit) {
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232 return;
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233 }
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diff changeset
234 if (branches != null && !branches.contains(cset.branch())) {
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235 return;
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236 }
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237 if (users != null) {
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238 String csetUser = cset.user().toLowerCase();
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239 boolean found = false;
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240 for (String u : users) {
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241 if (csetUser.indexOf(u) != -1) {
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242 found = true;
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243 break;
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244 }
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245 }
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246 if (!found) {
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247 return;
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248 }
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249 }
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250 if (date != null) {
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251 // FIXME
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252 }
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253 count++;
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254 changeset.init(revisionNumber, nodeid, cset);
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255 delegate.next(changeset);
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256 }
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257
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258 public interface Handler {
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259 /**
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260 * @param changeset not necessarily a distinct instance each time, {@link HgChangeset#clone() clone()} if need a copy.
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261 */
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262 void next(HgChangeset changeset);
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263 }
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264
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265 /**
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266 * When {@link HgLogCommand} is executed against file, handler passed to {@link HgLogCommand#execute(Handler)} may optionally
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267 * implement this interface to get information about file renames. Method {@link #copy(FileRevision, FileRevision)} would
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268 * get invoked prior any changeset of the original file (if file history being followed) is reported via {@link #next(HgChangeset)}.
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269 *
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270 * For {@link HgLogCommand#file(Path, boolean)} with renamed file path and follow argument set to false,
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271 * {@link #copy(FileRevision, FileRevision)} would be invoked for the first copy/rename in the history of the file, but not
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272 * followed by any changesets.
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273 *
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274 * @author Artem Tikhomirov
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275 * @author TMate Software Ltd.
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276 */
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277 public interface FileHistoryHandler extends Handler {
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278 // XXX perhaps, should distinguish copy from rename? And what about merged revisions and following them?
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279 void copy(FileRevision from, FileRevision to);
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280 }
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281
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282 public static class CollectHandler implements Handler {
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283 private final List<HgChangeset> result = new LinkedList<HgChangeset>();
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284
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285 public List<HgChangeset> getChanges() {
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286 return Collections.unmodifiableList(result);
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287 }
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288
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289 public void next(HgChangeset changeset) {
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290 result.add(changeset.clone());
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291 }
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292 }
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293
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294 public static final class FileRevision {
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295 private final HgRepository repo;
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296 private final Nodeid revision;
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297 private final Path path;
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298
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299 /*package-local*/FileRevision(HgRepository hgRepo, Nodeid rev, Path p) {
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300 if (hgRepo == null || rev == null || p == null) {
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301 // since it's package local, it is our code to blame for non validated arguments
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302 throw new HgBadStateException();
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303 }
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304 repo = hgRepo;
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305 revision = rev;
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306 path = p;
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307 }
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308
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309 public Path getPath() {
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310 return path;
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311 }
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312 public Nodeid getRevision() {
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313 return revision;
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314 }
157
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
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315 public void putContentTo(ByteChannel sink) throws HgDataStreamException, IOException, CancelledException {
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316 HgDataFile fn = repo.getFileNode(path);
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317 int localRevision = fn.getLocalRevision(revision);
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diff changeset
318 fn.contentWithFilters(localRevision, sink);
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319 }
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320 }
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321 }