Mercurial > hg4j

annotate src/org/tmatesoft/hg/core/HgLogCommand.java @ 209:9ce3b26798c4

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Few branches (distinct BranchChains from distinct heads) may end up with same nodes. Building BC structure fixed to reuse chain elements
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 28 Apr 2011 03:44:45 +0200
parents ffc5f6d59f7e
children 41a778e3fd31
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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19 import static org.tmatesoft.hg.repo.HgRepository.TIP;
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21 import java.io.IOException;
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22 import java.util.Calendar;
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23 import java.util.Collections;
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24 import java.util.ConcurrentModificationException;
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25 import java.util.LinkedList;
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26 import java.util.List;
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27 import java.util.Set;
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28 import java.util.TreeSet;
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29
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30 import org.tmatesoft.hg.repo.HgChangelog.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.util.ByteChannel;
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35 import org.tmatesoft.hg.util.CancelledException;
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36 import org.tmatesoft.hg.util.Path;
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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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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 Calendar date;
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59 private Path file;
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60 private boolean followHistory; // makes sense only when file != null
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61 private ChangesetTransformer csetTransform;
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62 private HgChangelog.ParentWalker parentHelper;
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63
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64 public HgLogCommand(HgRepository hgRepo) {
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7ec89d637f50 CatCommand
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65 repo = hgRepo;
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66 }
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68 /**
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69 * Limit search to specified user. Multiple user names may be specified. Once set, user names can't be
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70 * cleared, use new command instance in such cases.
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71 * @param user - full or partial name of the user, case-insensitive, non-null.
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72 * @return <code>this</code> instance for convenience
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73 * @throws IllegalArgumentException when argument is null
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74 */
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75 public HgLogCommand user(String user) {
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76 if (user == null) {
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77 throw new IllegalArgumentException();
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78 }
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79 if (users == null) {
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80 users = new TreeSet<String>();
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81 }
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82 users.add(user.toLowerCase());
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83 return this;
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84 }
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86 /**
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87 * Limit search to specified branch. Multiple branch specification possible (changeset from any of these
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88 * would be included in result). If unspecified, all branches are considered. There's no way to clean branch selection
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89 * once set, create fresh new command instead.
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90 * @param branch - branch name, case-sensitive, non-null.
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91 * @return <code>this</code> instance for convenience
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92 * @throws IllegalArgumentException when branch argument is null
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93 */
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94 public HgLogCommand branch(String branch) {
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95 if (branch == null) {
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96 throw new IllegalArgumentException();
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97 }
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98 if (branches == null) {
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99 branches = new TreeSet<String>();
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100 }
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101 branches.add(branch);
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102 return this;
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103 }
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105 // limit search to specific date
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106 // multiple?
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107 public HgLogCommand date(Calendar date) {
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108 this.date = date;
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109 // FIXME implement
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110 // isSet(field) - false => don't use in detection of 'same date'
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111 throw HgRepository.notImplemented();
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112 }
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114 /**
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115 *
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116 * @param num - number of changeset to produce. Pass 0 to clear the limit.
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117 * @return <code>this</code> instance for convenience
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118 */
131
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119 public HgLogCommand limit(int num) {
64
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120 limit = num;
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121 return this;
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122 }
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123
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124 /**
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125 * Limit to specified subset of Changelog, [min(rev1,rev2), max(rev1,rev2)], inclusive.
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126 * Revision may be specified with {@link HgRepository#TIP}
148
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127 * @param rev1 - local revision number
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128 * @param rev2 - local revision number
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129 * @return <code>this</code> instance for convenience
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130 */
131
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131 public HgLogCommand range(int rev1, int rev2) {
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132 if (rev1 != TIP && rev2 != TIP) {
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133 startRev = rev2 < rev1 ? rev2 : rev1;
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134 endRev = startRev == rev2 ? rev1 : rev2;
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135 } else if (rev1 == TIP && rev2 != TIP) {
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136 startRev = rev2;
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137 endRev = rev1;
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138 } else {
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139 startRev = rev1;
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140 endRev = rev2;
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141 }
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142 return this;
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143 }
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144
77
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145 /**
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146 * Visit history of a given file only.
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147 * @param file path relative to repository root. Pass <code>null</code> to reset.
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148 * @param followCopyRename true to report changesets of the original file(-s), if copy/rename ever occured to the file.
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149 */
131
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150 public HgLogCommand file(Path file, boolean followCopyRename) {
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151 // multiple? Bad idea, would need to include extra method into Handler to tell start of next file
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152 this.file = file;
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153 followHistory = followCopyRename;
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154 return this;
64
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155 }
142
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156
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157 /**
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158 * Handy analog of {@link #file(Path, boolean)} when clients' paths come from filesystem and need conversion to repository's
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159 */
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160 public HgLogCommand file(String file, boolean followCopyRename) {
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161 return file(Path.create(repo.getToRepoPathHelper().rewrite(file)), followCopyRename);
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162 }
64
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163
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164 /**
154
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165 * Similar to {@link #execute(org.tmatesoft.hg.repo.RawChangeset.Inspector)}, collects and return result as a list.
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166 */
157
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167 public List<HgChangeset> execute() throws HgException {
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168 CollectHandler collector = new CollectHandler();
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169 execute(collector);
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170 return collector.getChanges();
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171 }
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172
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173 /**
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174 *
205
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175 * @param handler callback to process changesets.
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176 * @throws IllegalArgumentException when inspector argument is null
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177 * @throws ConcurrentModificationException if this log command instance is already running
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178 */
205
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179 public void execute(HgChangesetHandler handler) throws HgException {
64
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180 if (handler == null) {
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181 throw new IllegalArgumentException();
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182 }
193
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183 if (csetTransform != null) {
64
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184 throw new ConcurrentModificationException();
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185 }
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186 try {
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187 count = 0;
195
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188 HgChangelog.ParentWalker pw = parentHelper; // leave it uninitialized unless we iterate whole repo
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189 if (file == null) {
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diff changeset
190 pw = getParentHelper();
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diff changeset
191 }
193
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192 // ChangesetTransfrom creates a blank PathPool, and #file(String, boolean) above
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diff changeset
193 // may utilize it as well. CommandContext? How about StatusCollector there as well?
195
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diff changeset
194 csetTransform = new ChangesetTransformer(repo, handler, pw);
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195 if (file == null) {
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196 repo.getChangelog().range(startRev, endRev, this);
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diff changeset
197 } else {
80
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198 HgDataFile fileNode = repo.getFileNode(file);
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199 fileNode.history(startRev, endRev, this);
126
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diff changeset
200 if (fileNode.isCopy()) {
80
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diff changeset
201 // even if we do not follow history, report file rename
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diff changeset
202 do {
126
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diff changeset
203 if (handler instanceof FileHistoryHandler) {
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204 FileRevision src = new FileRevision(repo, fileNode.getCopySourceRevision(), fileNode.getCopySourceName());
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205 FileRevision dst = new FileRevision(repo, fileNode.getRevision(0), fileNode.getPath());
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diff changeset
206 ((FileHistoryHandler) handler).copy(src, dst);
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diff changeset
207 }
80
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diff changeset
208 if (limit > 0 && count >= limit) {
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diff changeset
209 // if limit reach, follow is useless.
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diff changeset
210 break;
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diff changeset
211 }
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diff changeset
212 if (followHistory) {
126
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diff changeset
213 fileNode = repo.getFileNode(fileNode.getCopySourceName());
80
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diff changeset
214 fileNode.history(this);
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diff changeset
215 }
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diff changeset
216 } while (followHistory && fileNode.isCopy());
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diff changeset
217 }
77
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diff changeset
218 }
64
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219 } finally {
193
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diff changeset
220 csetTransform = null;
64
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221 }
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diff changeset
222 }
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223
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224 //
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diff changeset
225
154
ba2bf656f00f Changeset => RawChangeset
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diff changeset
226 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) {
64
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227 if (limit > 0 && count >= limit) {
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228 return;
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229 }
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diff changeset
230 if (branches != null && !branches.contains(cset.branch())) {
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diff changeset
231 return;
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232 }
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233 if (users != null) {
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234 String csetUser = cset.user().toLowerCase();
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235 boolean found = false;
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236 for (String u : users) {
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237 if (csetUser.indexOf(u) != -1) {
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238 found = true;
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239 break;
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240 }
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241 }
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242 if (!found) {
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243 return;
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244 }
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245 }
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246 if (date != null) {
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247 // FIXME
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248 }
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249 count++;
193
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250 csetTransform.next(revisionNumber, nodeid, cset);
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251 }
195
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252
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253 private HgChangelog.ParentWalker getParentHelper() {
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254 if (parentHelper == null) {
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255 parentHelper = repo.getChangelog().new ParentWalker();
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256 parentHelper.init();
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257 }
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258 return parentHelper;
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259 }
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260
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261
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262 /**
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263 * @deprecated Use {@link HgChangesetHandler} instead. This interface is left temporarily for compatibility.
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264 */
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265 @Deprecated()
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266 public interface Handler extends HgChangesetHandler {
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267 }
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268
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269 /**
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270 * When {@link HgLogCommand} is executed against file, handler passed to {@link HgLogCommand#execute(HgChangesetHandler)} may optionally
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271 * implement this interface to get information about file renames. Method {@link #copy(FileRevision, FileRevision)} would
129
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272 * get invoked prior any changeset of the original file (if file history being followed) is reported via {@link #next(HgChangeset)}.
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273 *
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274 * For {@link HgLogCommand#file(Path, boolean)} with renamed file path and follow argument set to false,
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275 * {@link #copy(FileRevision, FileRevision)} would be invoked for the first copy/rename in the history of the file, but not
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276 * followed by any changesets.
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277 *
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278 * @author Artem Tikhomirov
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279 * @author TMate Software Ltd.
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280 */
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281 public interface FileHistoryHandler extends HgChangesetHandler {
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282 // XXX perhaps, should distinguish copy from rename? And what about merged revisions and following them?
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283 void copy(FileRevision from, FileRevision to);
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284 }
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285
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286 public static class CollectHandler implements HgChangesetHandler {
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287 private final List<HgChangeset> result = new LinkedList<HgChangeset>();
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288
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289 public List<HgChangeset> getChanges() {
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290 return Collections.unmodifiableList(result);
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291 }
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292
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293 public void next(HgChangeset changeset) {
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294 result.add(changeset.clone());
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295 }
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296 }
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297
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298 public static final class FileRevision {
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299 private final HgRepository repo;
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300 private final Nodeid revision;
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301 private final Path path;
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302
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303 /*package-local*/FileRevision(HgRepository hgRepo, Nodeid rev, Path p) {
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304 if (hgRepo == null || rev == null || p == null) {
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305 // since it's package local, it is our code to blame for non validated arguments
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306 throw new HgBadStateException();
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307 }
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308 repo = hgRepo;
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309 revision = rev;
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310 path = p;
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311 }
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312
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313 public Path getPath() {
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314 return path;
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315 }
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316 public Nodeid getRevision() {
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317 return revision;
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318 }
157
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319 public void putContentTo(ByteChannel sink) throws HgDataStreamException, IOException, CancelledException {
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320 HgDataFile fn = repo.getFileNode(path);
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321 int localRevision = fn.getLocalRevision(revision);
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322 fn.contentWithFilters(localRevision, sink);
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323 }
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324 }
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325 }