annotate src/org/tmatesoft/hg/repo/HgChangelog.java @ 667:fba85bc1dfb8

Refactoring: move all encoding/decoding operations into single place, EncodingHelper
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 11 Jul 2013 17:54:08 +0200
parents a937e63b6e02
children 545b1d4cc11d
rev   line source
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1 /*
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2 * Copyright (c) 2010-2013 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.repo;
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18
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19 import java.io.IOException;
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20 import java.util.ArrayList;
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21 import java.util.Arrays;
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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.Date;
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25 import java.util.Formatter;
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26 import java.util.HashMap;
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27 import java.util.List;
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28 import java.util.Locale;
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29 import java.util.Map;
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30 import java.util.TimeZone;
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31
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32 import org.tmatesoft.hg.core.Nodeid;
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33 import org.tmatesoft.hg.core.SessionContext;
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34 import org.tmatesoft.hg.internal.Callback;
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35 import org.tmatesoft.hg.internal.DataAccess;
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36 import org.tmatesoft.hg.internal.EncodingHelper;
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37 import org.tmatesoft.hg.internal.Internals;
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38 import org.tmatesoft.hg.internal.Lifecycle;
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39 import org.tmatesoft.hg.internal.LifecycleBridge;
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40 import org.tmatesoft.hg.internal.Pool;
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41 import org.tmatesoft.hg.internal.RevlogStream;
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42 import org.tmatesoft.hg.util.Adaptable;
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43 import org.tmatesoft.hg.util.CancelSupport;
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44 import org.tmatesoft.hg.util.ProgressSupport;
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45
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46 /**
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47 * Representation of the Mercurial changelog file (list of ChangeSets)
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48 *
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49 * @author Artem Tikhomirov
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50 * @author TMate Software Ltd.
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51 */
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52 public final class HgChangelog extends Revlog {
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53
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54 /* package-local */HgChangelog(HgRepository hgRepo, RevlogStream content) {
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55 super(hgRepo, content, true);
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56 }
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57
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58 /**
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59 * Iterate over whole changelog
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60 * @param inspector callback to process entries
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61 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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62 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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63 */
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64 public void all(final HgChangelog.Inspector inspector) throws HgRuntimeException {
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65 range(0, getLastRevision(), inspector);
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66 }
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67
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68 /**
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69 * Iterate over changelog part
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70 * @param start first changelog entry to process
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71 * @param end last changelog entry to process
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72 * @param inspector callback to process entries
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73 * @throws HgInvalidRevisionException if any supplied revision doesn't identify revision from this revlog. <em>Runtime exception</em>
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74 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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75 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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76 */
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77 public void range(int start, int end, final HgChangelog.Inspector inspector) throws HgRuntimeException {
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78 if (inspector == null) {
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79 throw new IllegalArgumentException();
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80 }
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81 content.iterate(start, end, true, new RawCsetParser(getRepo(), inspector));
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82 }
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83
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84 /**
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85 * @see #range(int, int, Inspector)
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86 * @return changeset entry objects, never <code>null</code>
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87 * @throws HgInvalidRevisionException if any supplied revision doesn't identify revision from this revlog. <em>Runtime exception</em>
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88 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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89 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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90 */
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91 public List<RawChangeset> range(int start, int end) throws HgRuntimeException {
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92 final RawCsetCollector c = new RawCsetCollector(end - start + 1);
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93 range(start, end, c);
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94 return c.result;
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95 }
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97 /**
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98 * Access individual revisions. Note, regardless of supplied revision order, inspector gets
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99 * changesets strictly in the order they are in the changelog.
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100 * @param inspector callback to get changesets
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101 * @param revisions revisions to read, unrestricted ordering.
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102 * @throws HgInvalidRevisionException if any supplied revision doesn't identify revision from this revlog <em>Runtime exception</em>
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103 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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104 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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105 */
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106 public void range(final HgChangelog.Inspector inspector, final int... revisions) throws HgRuntimeException {
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107 Arrays.sort(revisions);
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108 rangeInternal(inspector, revisions);
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109 }
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111 /**
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112 * Friends-only version of {@link #range(Inspector, int...)}, when callers know array is sorted
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113 */
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114 /*package-local*/ void rangeInternal(HgChangelog.Inspector inspector, int[] sortedRevisions) throws HgRuntimeException {
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115 if (sortedRevisions == null || sortedRevisions.length == 0) {
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116 return;
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117 }
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118 if (inspector == null) {
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119 throw new IllegalArgumentException();
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120 }
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121 content.iterate(sortedRevisions, true, new RawCsetParser(getRepo(), inspector));
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122 }
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123
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124 /**
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125 * Get changeset entry object
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126 * @throws HgInvalidRevisionException if supplied nodeid doesn't identify any revision from this revlog. <em>Runtime exception</em>
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127 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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128 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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129 */
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130 public RawChangeset changeset(Nodeid nid) throws HgRuntimeException {
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131 int x = getRevisionIndex(nid);
236
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132 return range(x, x).get(0);
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133 }
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134
423
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135 @Callback
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136 public interface Inspector {
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137 /**
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138 * Access next changeset
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139 * TODO describe what revisionNumber is when Inspector is used with HgBundle (BAD_REVISION or bundle's local order?)
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140 *
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141 * @param revisionIndex index of revision being inspected, local to the inspected object
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142 * @param nodeid revision being inspected
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143 * @param cset changeset raw data
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144 */
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145 void next(int revisionIndex, Nodeid nodeid, RawChangeset cset) throws HgRuntimeException;
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146 }
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147
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148 /**
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149 * Entry in the Changelog
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150 */
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151 public static final class RawChangeset implements Cloneable /* for those that would like to keep a copy */{
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152 // would be nice to get it immutable, but then we can't reuse instances
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153 private/* final */Nodeid manifest;
153
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154 private String user;
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155 private String comment;
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156 private String[] files; // shall not be modified (#clone() does shallow copy)
153
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157 private Date time;
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158 private int timezone;
161
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159 // http://mercurial.selenic.com/wiki/PruningDeadBranches - Closing changesets can be identified by close=1 in the changeset's extra field.
153
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160 private Map<String, String> extras;
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161
154
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162 private RawChangeset() {
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163 }
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164
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165 public Nodeid manifest() {
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166 return manifest;
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167 }
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168
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169 public String user() {
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170 return user;
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171 }
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172
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173 public String comment() {
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174 return comment;
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175 }
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176
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177 public List<String> files() {
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178 return Arrays.asList(files);
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179 }
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180
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181 public Date date() {
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182 return time;
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183 }
211
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184
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185 /**
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186 * @return time zone value, as is, positive for Western Hemisphere.
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187 */
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188 public int timezone() {
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189 return timezone;
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190 }
153
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191
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192 public String dateString() {
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193 // XXX keep once formatted? Perhaps, there's faster way to set up calendar/time zone?
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194 StringBuilder sb = new StringBuilder(30);
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195 Formatter f = new Formatter(sb, Locale.US);
211
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196 TimeZone tz = TimeZone.getTimeZone(TimeZone.getAvailableIDs(timezone * 1000)[0]);
153
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197 // apparently timezone field records number of seconds time differs from UTC,
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198 // i.e. value to substract from time to get UTC time. Calendar seems to add
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199 // timezone offset to UTC, instead, hence sign change.
211
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200 // tz.setRawOffset(timezone * -1000);
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201 Calendar c = Calendar.getInstance(tz, Locale.US);
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202 c.setTime(time);
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203 f.format("%ta %<tb %<td %<tH:%<tM:%<tS %<tY %<tz", c);
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204 return sb.toString();
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205 }
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206
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207 public Map<String, String> extras() {
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208 return extras;
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209 }
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210
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211 public String branch() {
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212 return extras.get("branch");
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213 }
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214
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215 @Override
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216 public String toString() {
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217 StringBuilder sb = new StringBuilder();
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218 sb.append("Changeset {");
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219 sb.append("User: ").append(user).append(", ");
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220 sb.append("Comment: ").append(comment).append(", ");
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221 sb.append("Manifest: ").append(manifest).append(", ");
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222 sb.append("Date: ").append(time).append(", ");
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223 sb.append("Files: ").append(files.length);
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224 for (String s : files) {
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225 sb.append(", ").append(s);
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226 }
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227 if (extras != null) {
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228 sb.append(", Extra: ").append(extras);
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229 }
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230 sb.append("}");
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231 return sb.toString();
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232 }
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233
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234 @Override
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235 public RawChangeset clone() {
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236 try {
154
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237 return (RawChangeset) super.clone();
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238 } catch (CloneNotSupportedException ex) {
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239 throw new InternalError(ex.toString());
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240 }
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241 }
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242 }
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243
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244 /**
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245 * @see mercurial/changelog.py:read()
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246 *
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247 * <pre>
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248 * format used:
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249 * nodeid\n : manifest node in ascii
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250 * user\n : user, no \n or \r allowed
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251 * time tz extra\n : date (time is int or float, timezone is int)
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252 * : extra is metadatas, encoded and separated by '\0'
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253 * : older versions ignore it
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254 * files\n\n : files modified by the cset, no \n or \r allowed
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255 * (.*) : comment (free text, ideally utf-8)
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256 *
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257 * changelog v0 doesn't use extra
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258 * </pre>
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259 */
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260 /*package-local*/static final class ChangesetParser {
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261 private final EncodingHelper encHelper;
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262 // it's likely user names get repeated again and again throughout repository.
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263 private final Pool<String> usersPool;
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264 private final Pool<String> filesPool;
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265 private final boolean reuseChangesetInstance;
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266 private RawChangeset target;
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267
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268 public ChangesetParser(SessionContext.Source sessionContex, boolean shallReuseCsetInstance) {
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269 encHelper = Internals.buildFileNameEncodingHelper(sessionContex);
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270 usersPool = new Pool<String>();
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271 filesPool = new Pool<String>();
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272 reuseChangesetInstance = shallReuseCsetInstance;
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273 if (shallReuseCsetInstance) {
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274 target = new RawChangeset();
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275 }
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276 }
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277
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278 public void dispose() {
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279 usersPool.clear();
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280 filesPool.clear();
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281 }
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282
667
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283 public RawChangeset parse(DataAccess da) throws IOException, HgInvalidDataFormatException {
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284 byte[] data = da.byteArray();
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285 if (!reuseChangesetInstance) {
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286 target = new RawChangeset();
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287 }
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288 init(data, 0, data.length);
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289 return target;
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290 }
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291
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292 private void init(byte[] data, int offset, int length) throws HgInvalidDataFormatException {
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293 final int bufferEndIndex = offset + length;
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294 final byte lineBreak = (byte) '\n';
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295 int breakIndex1 = indexOf(data, lineBreak, offset, bufferEndIndex);
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296 if (breakIndex1 == -1) {
427
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297 throw new HgInvalidDataFormatException("Bad Changeset data");
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298 }
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299 Nodeid _nodeid = Nodeid.fromAscii(data, 0, breakIndex1);
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300 int breakIndex2 = indexOf(data, lineBreak, breakIndex1 + 1, bufferEndIndex);
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301 if (breakIndex2 == -1) {
427
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302 throw new HgInvalidDataFormatException("Bad Changeset data");
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303 }
589
c18095eedde0 Username in changeset uses UTF-8, not system encoding
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304 String _user;
667
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305 _user = encHelper.userFromChangeset(data, breakIndex1 + 1, breakIndex2 - breakIndex1 - 1);
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306 _user = usersPool.unify(_user);
589
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307
153
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308 int breakIndex3 = indexOf(data, lineBreak, breakIndex2 + 1, bufferEndIndex);
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309 if (breakIndex3 == -1) {
427
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310 throw new HgInvalidDataFormatException("Bad Changeset data");
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311 }
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312 String _timeString = new String(data, breakIndex2 + 1, breakIndex3 - breakIndex2 - 1);
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313 int space1 = _timeString.indexOf(' ');
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314 if (space1 == -1) {
427
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315 throw new HgInvalidDataFormatException(String.format("Bad Changeset data: %s in [%d..%d]", "time string", breakIndex2+1, breakIndex3));
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316 }
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317 int space2 = _timeString.indexOf(' ', space1 + 1);
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318 if (space2 == -1) {
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319 space2 = _timeString.length();
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320 }
363
d9dfa9fe9cec Decode escape sequences in changeset extras field
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321 long unixTime = Long.parseLong(_timeString.substring(0, space1));
153
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322 int _timezone = Integer.parseInt(_timeString.substring(space1 + 1, space2));
363
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323 // unixTime is local time, and timezone records difference of the local time to UTC.
153
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324 Date _time = new Date(unixTime * 1000);
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325 String _extras = space2 < _timeString.length() ? _timeString.substring(space2 + 1) : null;
656
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326 Map<String, String> _extrasMap = parseExtras(_extras);
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327 //
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328 int lastStart = breakIndex3 + 1;
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329 int breakIndex4 = indexOf(data, lineBreak, lastStart, bufferEndIndex);
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330 ArrayList<String> _files = null;
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331 if (breakIndex4 > lastStart) {
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332 // if breakIndex4 == lastStart, we already found \n\n and hence there are no files (e.g. merge revision)
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333 _files = new ArrayList<String>(5);
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334 while (breakIndex4 != -1 && breakIndex4 + 1 < bufferEndIndex) {
667
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335 String fname = encHelper.fileFromChangeset(data, lastStart, breakIndex4 - lastStart);
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336 _files.add(filesPool.unify(fname));
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337 lastStart = breakIndex4 + 1;
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338 if (data[breakIndex4 + 1] == lineBreak) {
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339 // found \n\n
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340 break;
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341 } else {
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diff changeset
342 breakIndex4 = indexOf(data, lineBreak, lastStart, bufferEndIndex);
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343 }
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344 }
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345 if (breakIndex4 == -1 || breakIndex4 >= bufferEndIndex) {
427
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346 throw new HgInvalidDataFormatException("Bad Changeset data");
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347 }
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348 } else {
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349 breakIndex4--;
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350 }
667
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351 String _comment = encHelper.commentFromChangeset(data, breakIndex4 + 2, bufferEndIndex - breakIndex4 - 2);
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352 // change this instance at once, don't leave it partially changes in case of error
667
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353 target.manifest = _nodeid;
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diff changeset
354 target.user = _user;
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diff changeset
355 target.time = _time;
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diff changeset
356 target.timezone = _timezone;
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diff changeset
357 target.files = _files == null ? new String[0] : _files.toArray(new String[_files.size()]);
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diff changeset
358 target.comment = _comment;
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359 target.extras = _extrasMap;
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diff changeset
360 }
129
645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
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diff changeset
361
656
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diff changeset
362 private Map<String, String> parseExtras(String _extras) {
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diff changeset
363 final String extras_branch_key = "branch";
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diff changeset
364 _extras = _extras == null ? null : _extras.trim();
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diff changeset
365 if (_extras == null || _extras.length() == 0) {
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
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diff changeset
366 return Collections.singletonMap(extras_branch_key, HgRepository.DEFAULT_BRANCH_NAME);
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
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parents: 628
diff changeset
367 }
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
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parents: 628
diff changeset
368 Map<String, String> _extrasMap = new HashMap<String, String>();
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
369 int lastIndex = 0;
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
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parents: 628
diff changeset
370 do {
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
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parents: 628
diff changeset
371 String pair;
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
372 int sp = _extras.indexOf('\0', lastIndex);
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
373 if (sp == -1) {
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
374 sp = _extras.length();
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
375 }
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
376 if (sp > lastIndex) {
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
377 pair = _extras.substring(lastIndex, sp);
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
378 pair = decode(pair);
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
379 int eq = pair.indexOf(':');
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
380 _extrasMap.put(pair.substring(0, eq), pair.substring(eq + 1));
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
381 lastIndex = sp + 1;
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
382 }
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
383 } while (lastIndex < _extras.length());
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
384 if (!_extrasMap.containsKey(extras_branch_key)) {
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
385 _extrasMap.put(extras_branch_key, HgRepository.DEFAULT_BRANCH_NAME);
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
386 }
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
387 return Collections.unmodifiableMap(_extrasMap);
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
388 }
a937e63b6e02 Performance: rebuild information about branches takes too long (my improvement: 3 times, 11-15 s to less than 4 sec)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
389
153
ab7ea2ac21cb Format code
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
390 private static int indexOf(byte[] src, byte what, int startOffset, int endIndex) {
ab7ea2ac21cb Format code
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 146
diff changeset
391 for (int i = startOffset; i < endIndex; i++) {
ab7ea2ac21cb Format code
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 146
diff changeset
392 if (src[i] == what) {
ab7ea2ac21cb Format code
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 146
diff changeset
393 return i;
ab7ea2ac21cb Format code
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 146
diff changeset
394 }
ab7ea2ac21cb Format code
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 146
diff changeset
395 }
ab7ea2ac21cb Format code
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 146
diff changeset
396 return -1;
ab7ea2ac21cb Format code
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 146
diff changeset
397 }
363
d9dfa9fe9cec Decode escape sequences in changeset extras field
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 360
diff changeset
398
d9dfa9fe9cec Decode escape sequences in changeset extras field
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 360
diff changeset
399 private static String decode(String s) {
d9dfa9fe9cec Decode escape sequences in changeset extras field
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 360
diff changeset
400 if (s != null && s.indexOf('\\') != -1) {
d9dfa9fe9cec Decode escape sequences in changeset extras field
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 360
diff changeset
401 // TestAuxUtilities#testChangelogExtrasDecode
d9dfa9fe9cec Decode escape sequences in changeset extras field
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 360
diff changeset
402 return s.replace("\\\\", "\\").replace("\\n", "\n").replace("\\r", "\r").replace("\\0", "\00");
d9dfa9fe9cec Decode escape sequences in changeset extras field
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 360
diff changeset
403 }
d9dfa9fe9cec Decode escape sequences in changeset extras field
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 360
diff changeset
404 return s;
d9dfa9fe9cec Decode escape sequences in changeset extras field
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 360
diff changeset
405 }
129
645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 102
diff changeset
406 }
645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 102
diff changeset
407
196
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parents: 182
diff changeset
408 private static class RawCsetCollector implements Inspector {
e2115da4cf6a Pool objects to avoid memory polution with duplicates
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parents: 182
diff changeset
409 final ArrayList<RawChangeset> result;
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
410
e2115da4cf6a Pool objects to avoid memory polution with duplicates
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parents: 182
diff changeset
411 public RawCsetCollector(int count) {
e2115da4cf6a Pool objects to avoid memory polution with duplicates
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parents: 182
diff changeset
412 result = new ArrayList<RawChangeset>(count > 0 ? count : 5);
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
413 }
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
414
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
415 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) {
e2115da4cf6a Pool objects to avoid memory polution with duplicates
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parents: 182
diff changeset
416 result.add(cset.clone());
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
417 }
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
418 }
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
419
667
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
420 private static final class RawCsetParser implements RevlogStream.Inspector, Adaptable, Lifecycle {
196
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parents: 182
diff changeset
421
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
422 private final Inspector inspector;
667
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
423 private final ChangesetParser csetBuilder;
520
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
424 // non-null when inspector uses high-level lifecycle entities (progress and/or cancel supports)
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
425 private final LifecycleBridge lifecycleStub;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
426 // non-null when inspector relies on low-level lifecycle and is responsible
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
427 // to proceed any possible high-level entities himself.
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
428 private final Lifecycle inspectorLifecycle;
196
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parents: 182
diff changeset
429
667
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
430 public RawCsetParser(SessionContext.Source sessionContext, HgChangelog.Inspector delegate) {
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
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parents: 182
diff changeset
431 assert delegate != null;
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
432 inspector = delegate;
667
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
433 csetBuilder = new ChangesetParser(sessionContext, true);
520
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
434 inspectorLifecycle = Adaptable.Factory.getAdapter(delegate, Lifecycle.class, null);
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
435 if (inspectorLifecycle == null) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
436 ProgressSupport ph = Adaptable.Factory.getAdapter(delegate, ProgressSupport.class, null);
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
437 CancelSupport cs = Adaptable.Factory.getAdapter(delegate, CancelSupport.class, null);
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
438 if (cs != null || ph != null) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
439 lifecycleStub = new LifecycleBridge(ph, cs);
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
440 } else {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
441 lifecycleStub = null;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
442 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
443 } else {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
444 lifecycleStub = null;
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
445 }
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
446 }
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
447
628
6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 600
diff changeset
448 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess da) throws HgRuntimeException {
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
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parents: 182
diff changeset
449 try {
667
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
450 RawChangeset cset = csetBuilder.parse(da);
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
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parents: 182
diff changeset
451 // XXX there's no guarantee for Changeset.Callback that distinct instance comes each time, consider instance reuse
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
452 inspector.next(revisionNumber, Nodeid.fromBinary(nodeid, 0), cset);
520
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
453 if (lifecycleStub != null) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
454 lifecycleStub.nextStep();
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
455 }
427
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 426
diff changeset
456 } catch (HgInvalidDataFormatException ex) {
31a89587eb04 FIXMEs: consistent names, throws for commands and their handlers. Use of checked exceptions in hi-level api
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 426
diff changeset
457 throw ex.setRevisionIndex(revisionNumber);
366
189dc6dc1c3e Use exceptions to expose errors reading mercurial data
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 365
diff changeset
458 } catch (IOException ex) {
423
9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 419
diff changeset
459 // XXX need better exception, perhaps smth like HgChangelogException (extends HgInvalidControlFileException)
9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 419
diff changeset
460 throw new HgInvalidControlFileException("Failed reading changelog", ex, null).setRevisionIndex(revisionNumber);
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
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parents: 182
diff changeset
461 }
520
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
462 }
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
463
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
464 public <T> T getAdapter(Class<T> adapterClass) {
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
465 if (adapterClass == Lifecycle.class) {
667
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
466 return adapterClass.cast(this);
312
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 252
diff changeset
467 }
667
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
468 // XXX what if caller takes Progress/Cancel (which we update through lifecycleStub, too)
520
1ee452f31187 Experimental support for inverse direction history walking. Refactored/streamlined cancellation in HgLogCommand and down the stack
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 427
diff changeset
469 return Adaptable.Factory.getAdapter(inspector, adapterClass, null);
312
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 252
diff changeset
470 }
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 252
diff changeset
471
667
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
472 public void start(int count, Callback callback, Object token) {
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
473 if (inspectorLifecycle != null) {
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
474 inspectorLifecycle.start(count, callback, token);
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
475 } else if (lifecycleStub != null) {
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
476 lifecycleStub.start(count, callback, token);
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
477 }
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
478 }
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
479
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
480 public void finish(Object token) {
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
481 if (inspectorLifecycle != null) {
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
482 inspectorLifecycle.finish(token);
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
483 } else if (lifecycleStub != null) {
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
484 lifecycleStub.finish(token);
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
485 }
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
486 csetBuilder.dispose();
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
487 }
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 656
diff changeset
488
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 182
diff changeset
489 }
0
dbd663faec1f Basic changelog parsing
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
490 }