Mercurial > jhg

annotate src/org/tmatesoft/hg/core/HgLogCommand.java @ 142:37a34044e6bd

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More reasonable use of path normalizer and path.source
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 17 Feb 2011 05:06:07 +0100
parents 4a948ec83980
children 1a7a9a20e1f9
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.util.Calendar;
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22 import java.util.Collections;
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23 import java.util.ConcurrentModificationException;
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24 import java.util.LinkedList;
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25 import java.util.List;
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26 import java.util.Set;
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27 import java.util.TreeSet;
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28
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29 import org.tmatesoft.hg.repo.HgChangelog.Changeset;
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30 import org.tmatesoft.hg.repo.HgChangelog;
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31 import org.tmatesoft.hg.repo.HgDataFile;
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32 import org.tmatesoft.hg.repo.HgRepository;
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33 import org.tmatesoft.hg.repo.HgStatusCollector;
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34 import org.tmatesoft.hg.util.Path;
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35 import org.tmatesoft.hg.util.PathPool;
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36 import org.tmatesoft.hg.util.PathRewrite;
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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 Handler delegate;
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59 private Calendar date;
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60 private Path file;
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61 private boolean followHistory; // makes sense only when file != null
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62 private HgChangeset changeset;
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63
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64 public HgLogCommand(HgRepository hgRepo) {
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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.
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70 * @param user - full or partial name of the user, case-insensitive, non-null.
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71 * @return <code>this</code> instance for convenience
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72 */
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73 public HgLogCommand user(String user) {
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74 if (user == null) {
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75 throw new IllegalArgumentException();
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76 }
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77 if (users == null) {
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78 users = new TreeSet<String>();
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79 }
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80 users.add(user.toLowerCase());
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81 return this;
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82 }
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84 /**
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85 * Limit search to specified branch. Multiple branch specification possible (changeset from any of these
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86 * would be included in result). If unspecified, all branches are considered.
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87 * @param branch - branch name, case-sensitive, non-null.
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88 * @return <code>this</code> instance for convenience
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89 */
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90 public HgLogCommand branch(String branch) {
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91 if (branch == null) {
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92 throw new IllegalArgumentException();
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93 }
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94 if (branches == null) {
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95 branches = new TreeSet<String>();
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96 }
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97 branches.add(branch);
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98 return this;
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99 }
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101 // limit search to specific date
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102 // multiple?
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103 public HgLogCommand date(Calendar date) {
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104 this.date = date;
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105 // FIXME implement
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106 // isSet(field) - false => don't use in detection of 'same date'
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107 throw HgRepository.notImplemented();
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108 }
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110 /**
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111 *
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112 * @param num - number of changeset to produce. Pass 0 to clear the limit.
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113 * @return <code>this</code> instance for convenience
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114 */
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115 public HgLogCommand limit(int num) {
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116 limit = num;
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117 return this;
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118 }
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119
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120 /**
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121 * Limit to specified subset of Changelog, [min(rev1,rev2), max(rev1,rev2)], inclusive.
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122 * Revision may be specified with {@link HgRepository#TIP}
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123 * @param rev1
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124 * @param rev2
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125 * @return <code>this</code> instance for convenience
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126 */
131
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127 public HgLogCommand range(int rev1, int rev2) {
64
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128 if (rev1 != TIP && rev2 != TIP) {
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129 startRev = rev2 < rev1 ? rev2 : rev1;
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130 endRev = startRev == rev2 ? rev1 : rev2;
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131 } else if (rev1 == TIP && rev2 != TIP) {
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132 startRev = rev2;
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133 endRev = rev1;
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134 } else {
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135 startRev = rev1;
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136 endRev = rev2;
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137 }
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138 return this;
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139 }
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140
77
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141 /**
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142 * Visit history of a given file only.
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143 * @param file path relative to repository root. Pass <code>null</code> to reset.
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144 * @param followCopyRename true to report changesets of the original file(-s), if copy/rename ever occured to the file.
77
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diff changeset
145 */
131
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146 public HgLogCommand file(Path file, boolean followCopyRename) {
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147 // multiple? Bad idea, would need to include extra method into Handler to tell start of next file
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148 this.file = file;
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149 followHistory = followCopyRename;
77
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150 return this;
64
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151 }
142
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152
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153 /**
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154 * Handy analog of {@link #file(Path, boolean)} when clients' paths come from filesystem and need conversion to repository's
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155 */
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156 public HgLogCommand file(String file, boolean followCopyRename) {
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157 return file(Path.create(repo.getToRepoPathHelper().rewrite(file)), followCopyRename);
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158 }
64
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159
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160 /**
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161 * Similar to {@link #execute(org.tmatesoft.hg.repo.Changeset.Inspector)}, collects and return result as a list.
64
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162 */
129
645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
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diff changeset
163 public List<HgChangeset> execute() {
64
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164 CollectHandler collector = new CollectHandler();
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165 execute(collector);
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166 return collector.getChanges();
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167 }
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168
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169 /**
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170 *
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171 * @param inspector
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172 * @throws IllegalArgumentException when inspector argument is null
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173 * @throws ConcurrentModificationException if this log command instance is already running
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174 */
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175 public void execute(Handler handler) {
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176 if (handler == null) {
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177 throw new IllegalArgumentException();
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178 }
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179 if (delegate != null) {
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180 throw new ConcurrentModificationException();
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181 }
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182 try {
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183 delegate = handler;
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184 count = 0;
142
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diff changeset
185 HgStatusCollector statusCollector = new HgStatusCollector(repo);
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186 // files listed in a changeset don't need their names to be rewritten (they are normalized already)
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diff changeset
187 PathPool pp = new PathPool(new PathRewrite.Empty());
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diff changeset
188 // #file(String, boolean) above may utilize PathPool as well. CommandContext?
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diff changeset
189 statusCollector.setPathPool(pp);
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diff changeset
190 changeset = new HgChangeset(statusCollector, pp);
77
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diff changeset
191 if (file == null) {
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diff changeset
192 repo.getChangelog().range(startRev, endRev, this);
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diff changeset
193 } else {
80
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diff changeset
194 HgDataFile fileNode = repo.getFileNode(file);
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diff changeset
195 fileNode.history(startRev, endRev, this);
126
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parents: 107
diff changeset
196 if (fileNode.isCopy()) {
80
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diff changeset
197 // even if we do not follow history, report file rename
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diff changeset
198 do {
126
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diff changeset
199 if (handler instanceof FileHistoryHandler) {
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diff changeset
200 FileRevision src = new FileRevision(repo, fileNode.getCopySourceRevision(), fileNode.getCopySourceName());
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diff changeset
201 FileRevision dst = new FileRevision(repo, fileNode.getRevision(0), fileNode.getPath());
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diff changeset
202 ((FileHistoryHandler) handler).copy(src, dst);
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diff changeset
203 }
80
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parents: 77
diff changeset
204 if (limit > 0 && count >= limit) {
4222b04f34ee Follow history of a file
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diff changeset
205 // if limit reach, follow is useless.
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diff changeset
206 break;
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diff changeset
207 }
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diff changeset
208 if (followHistory) {
126
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diff changeset
209 fileNode = repo.getFileNode(fileNode.getCopySourceName());
80
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diff changeset
210 fileNode.history(this);
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diff changeset
211 }
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diff changeset
212 } while (followHistory && fileNode.isCopy());
4222b04f34ee Follow history of a file
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diff changeset
213 }
77
c677e1593919 Moved RevlogStream implementation into .internal
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diff changeset
214 }
64
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diff changeset
215 } finally {
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diff changeset
216 delegate = null;
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diff changeset
217 changeset = null;
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parents:
diff changeset
218 }
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parents:
diff changeset
219 }
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diff changeset
220
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parents:
diff changeset
221 //
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parents:
diff changeset
222
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parents:
diff changeset
223 public void next(int revisionNumber, Nodeid nodeid, Changeset cset) {
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parents:
diff changeset
224 if (limit > 0 && count >= limit) {
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diff changeset
225 return;
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diff changeset
226 }
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parents:
diff changeset
227 if (branches != null && !branches.contains(cset.branch())) {
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diff changeset
228 return;
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diff changeset
229 }
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diff changeset
230 if (users != null) {
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diff changeset
231 String csetUser = cset.user().toLowerCase();
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diff changeset
232 boolean found = false;
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parents:
diff changeset
233 for (String u : users) {
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diff changeset
234 if (csetUser.indexOf(u) != -1) {
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diff changeset
235 found = true;
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parents:
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236 break;
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237 }
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238 }
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239 if (!found) {
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240 return;
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241 }
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242 }
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243 if (date != null) {
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244 // FIXME
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245 }
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246 count++;
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247 changeset.init(revisionNumber, nodeid, cset);
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248 delegate.next(changeset);
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249 }
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250
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251 public interface Handler {
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252 /**
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253 * @param changeset not necessarily a distinct instance each time, {@link HgChangeset#clone() clone()} if need a copy.
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254 */
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255 void next(HgChangeset changeset);
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256 }
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257
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258 /**
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259 * When {@link HgLogCommand} is executed against file, handler passed to {@link HgLogCommand#execute(Handler)} may optionally
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260 * implement this interface to get information about file renames. Method {@link #copy(FileRevision, FileRevision)} would
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261 * get invoked prior any changeset of the original file (if file history being followed) is reported via {@link #next(HgChangeset)}.
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262 *
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263 * For {@link HgLogCommand#file(Path, boolean)} with renamed file path and follow argument set to false,
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264 * {@link #copy(FileRevision, FileRevision)} would be invoked for the first copy/rename in the history of the file, but not
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265 * followed by any changesets.
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266 *
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267 * @author Artem Tikhomirov
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268 * @author TMate Software Ltd.
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269 */
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270 public interface FileHistoryHandler extends Handler {
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271 // XXX perhaps, should distinguish copy from rename? And what about merged revisions and following them?
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272 void copy(FileRevision from, FileRevision to);
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273 }
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274
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275 public static class CollectHandler implements Handler {
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276 private final List<HgChangeset> result = new LinkedList<HgChangeset>();
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277
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278 public List<HgChangeset> getChanges() {
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279 return Collections.unmodifiableList(result);
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280 }
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281
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282 public void next(HgChangeset changeset) {
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283 result.add(changeset.clone());
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284 }
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285 }
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286
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287 public static final class FileRevision {
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288 private final HgRepository repo;
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289 private final Nodeid revision;
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290 private final Path path;
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291
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292 /*package-local*/FileRevision(HgRepository hgRepo, Nodeid rev, Path p) {
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293 if (hgRepo == null || rev == null || p == null) {
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294 throw new IllegalArgumentException();
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295 }
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296 repo = hgRepo;
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297 revision = rev;
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298 path = p;
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299 }
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300
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301 public Path getPath() {
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302 return path;
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303 }
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304 public Nodeid getRevision() {
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305 return revision;
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306 }
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307 public byte[] getContent() {
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308 // XXX Content wrapper, to allow formats other than byte[], e.g. Stream, DataAccess, etc?
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309 return repo.getFileNode(path).content(revision);
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310 }
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311 }
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312 }