Mercurial > hg4j

annotate src/org/tmatesoft/hg/repo/HgChangelog.java @ 709:497e697636fc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Report merged lines as changed block if possible, not as a sequence of added/deleted blocks. To facilitate access to merge parent lines AddBlock got mergeLineAt() method that reports index of the line in the second parent (if any), while insertedAt() has been changed to report index in the first parent always
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 21 Aug 2013 16:23:27 +0200
parents 545b1d4cc11d
children
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.Date;
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24 import java.util.Formatter;
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25 import java.util.List;
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26 import java.util.Locale;
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27 import java.util.Map;
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28 import java.util.TimeZone;
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29
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30 import org.tmatesoft.hg.core.Nodeid;
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31 import org.tmatesoft.hg.core.SessionContext;
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32 import org.tmatesoft.hg.internal.Callback;
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33 import org.tmatesoft.hg.internal.ChangesetParser;
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34 import org.tmatesoft.hg.internal.DataAccess;
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35 import org.tmatesoft.hg.internal.Lifecycle;
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36 import org.tmatesoft.hg.internal.LifecycleBridge;
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37 import org.tmatesoft.hg.internal.RevlogStream;
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38 import org.tmatesoft.hg.util.Adaptable;
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39 import org.tmatesoft.hg.util.CancelSupport;
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40 import org.tmatesoft.hg.util.ProgressSupport;
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41
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42 /**
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43 * Representation of the Mercurial changelog file (list of ChangeSets)
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44 *
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45 * @author Artem Tikhomirov
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46 * @author TMate Software Ltd.
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47 */
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48 public final class HgChangelog extends Revlog {
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49
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50 /* package-local */HgChangelog(HgRepository hgRepo, RevlogStream content) {
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51 super(hgRepo, content, true);
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52 }
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53
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54 /**
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55 * Iterate over whole changelog
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56 * @param inspector callback to process entries
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57 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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58 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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59 */
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60 public void all(final HgChangelog.Inspector inspector) throws HgRuntimeException {
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61 range(0, getLastRevision(), inspector);
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62 }
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64 /**
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65 * Iterate over changelog part
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66 * @param start first changelog entry to process
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67 * @param end last changelog entry to process
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68 * @param inspector callback to process entries
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69 * @throws HgInvalidRevisionException if any supplied revision doesn't identify revision from this revlog. <em>Runtime exception</em>
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70 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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71 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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72 */
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73 public void range(int start, int end, final HgChangelog.Inspector inspector) throws HgRuntimeException {
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74 if (inspector == null) {
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75 throw new IllegalArgumentException();
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76 }
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77 content.iterate(start, end, true, new RawCsetParser(getRepo(), inspector));
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78 }
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80 /**
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81 * @see #range(int, int, Inspector)
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82 * @return changeset entry objects, never <code>null</code>
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83 * @throws HgInvalidRevisionException if any supplied revision doesn't identify revision from this revlog. <em>Runtime exception</em>
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84 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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85 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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86 */
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87 public List<RawChangeset> range(int start, int end) throws HgRuntimeException {
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88 final RawCsetCollector c = new RawCsetCollector(end - start + 1);
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89 range(start, end, c);
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90 return c.result;
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91 }
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93 /**
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94 * Access individual revisions. Note, regardless of supplied revision order, inspector gets
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95 * changesets strictly in the order they are in the changelog.
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96 * @param inspector callback to get changesets
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97 * @param revisions revisions to read, unrestricted ordering.
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98 * @throws HgInvalidRevisionException if any supplied revision doesn't identify revision from this revlog <em>Runtime exception</em>
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99 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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100 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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101 */
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102 public void range(final HgChangelog.Inspector inspector, final int... revisions) throws HgRuntimeException {
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103 Arrays.sort(revisions);
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104 rangeInternal(inspector, revisions);
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105 }
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106
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107 /**
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108 * Friends-only version of {@link #range(Inspector, int...)}, when callers know array is sorted
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109 */
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110 /*package-local*/ void rangeInternal(HgChangelog.Inspector inspector, int[] sortedRevisions) throws HgRuntimeException {
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111 if (sortedRevisions == null || sortedRevisions.length == 0) {
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112 return;
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113 }
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114 if (inspector == null) {
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115 throw new IllegalArgumentException();
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116 }
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117 content.iterate(sortedRevisions, true, new RawCsetParser(getRepo(), inspector));
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118 }
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119
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120 /**
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121 * Get changeset entry object
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122 * @throws HgInvalidRevisionException if supplied nodeid doesn't identify any revision from this revlog. <em>Runtime exception</em>
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123 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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124 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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125 */
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126 public RawChangeset changeset(Nodeid nid) throws HgRuntimeException {
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127 int x = getRevisionIndex(nid);
236
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128 return range(x, x).get(0);
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129 }
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130
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131 @Callback
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132 public interface Inspector {
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133 /**
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134 * Access next changeset
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135 * TODO describe what revisionNumber is when Inspector is used with HgBundle (BAD_REVISION or bundle's local order?)
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136 *
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137 * @param revisionIndex index of revision being inspected, local to the inspected object
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138 * @param nodeid revision being inspected
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139 * @param cset changeset raw data
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140 */
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141 void next(int revisionIndex, Nodeid nodeid, RawChangeset cset) throws HgRuntimeException;
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142 }
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143
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144 /**
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145 * Entry in the Changelog
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146 */
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147 public static final class RawChangeset implements Cloneable /* for those that would like to keep a copy */{
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148 // would be nice to get it immutable, but then we can't reuse instances
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149 /* final */Nodeid manifest;
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150 String user;
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151 String comment;
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152 String[] files; // shall not be modified (#clone() does shallow copy)
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153 Date time;
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154 int timezone;
161
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155 // http://mercurial.selenic.com/wiki/PruningDeadBranches - Closing changesets can be identified by close=1 in the changeset's extra field.
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156 Map<String, String> extras;
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157
154
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158 private RawChangeset() {
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159 }
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160
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161 public Nodeid manifest() {
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162 return manifest;
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163 }
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164
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165 public String user() {
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166 return user;
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167 }
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168
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169 public String comment() {
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170 return comment;
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171 }
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172
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173 public List<String> files() {
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174 return Arrays.asList(files);
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175 }
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176
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177 public Date date() {
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178 return time;
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179 }
211
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180
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181 /**
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182 * @return time zone value, as is, positive for Western Hemisphere.
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183 */
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184 public int timezone() {
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185 return timezone;
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186 }
153
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187
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188 public String dateString() {
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189 // XXX keep once formatted? Perhaps, there's faster way to set up calendar/time zone?
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190 StringBuilder sb = new StringBuilder(30);
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191 Formatter f = new Formatter(sb, Locale.US);
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192 TimeZone tz = TimeZone.getTimeZone(TimeZone.getAvailableIDs(timezone * 1000)[0]);
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193 // apparently timezone field records number of seconds time differs from UTC,
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194 // i.e. value to substract from time to get UTC time. Calendar seems to add
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195 // timezone offset to UTC, instead, hence sign change.
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196 // tz.setRawOffset(timezone * -1000);
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197 Calendar c = Calendar.getInstance(tz, Locale.US);
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198 c.setTime(time);
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199 f.format("%ta %<tb %<td %<tH:%<tM:%<tS %<tY %<tz", c);
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200 return sb.toString();
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201 }
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202
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203 public Map<String, String> extras() {
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204 return extras;
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205 }
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206
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207 public String branch() {
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208 return extras.get("branch");
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209 }
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210
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211 @Override
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212 public String toString() {
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213 StringBuilder sb = new StringBuilder();
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214 sb.append("Changeset {");
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215 sb.append("User: ").append(user).append(", ");
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216 sb.append("Comment: ").append(comment).append(", ");
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217 sb.append("Manifest: ").append(manifest).append(", ");
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218 sb.append("Date: ").append(time).append(", ");
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219 sb.append("Files: ").append(files.length);
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220 for (String s : files) {
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221 sb.append(", ").append(s);
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222 }
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223 if (extras != null) {
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224 sb.append(", Extra: ").append(extras);
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225 }
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226 sb.append("}");
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227 return sb.toString();
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228 }
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229
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230 @Override
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231 public RawChangeset clone() {
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232 try {
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233 return (RawChangeset) super.clone();
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234 } catch (CloneNotSupportedException ex) {
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235 throw new InternalError(ex.toString());
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236 }
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237 }
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238 }
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239
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240 /*package-local*/static final class RawCsetFactory implements ChangesetParser.CsetFactory {
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241 private RawChangeset cset;
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242
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243 public RawCsetFactory(boolean shallReuseCsetInstance) {
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244 if (shallReuseCsetInstance) {
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245 cset = new RawChangeset();
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246 }
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247 }
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248
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249 public RawChangeset create(Nodeid nodeidManifest, String user, Date time, int timezone, List<String> files, String comment, Map<String, String> extrasMap) {
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250 RawChangeset target;
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251 if (cset != null) {
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252 target = cset;
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253 } else {
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254 target = new RawChangeset();
153
ab7ea2ac21cb Format code
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255 }
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256 target.manifest = nodeidManifest;
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257 target.user = user;
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258 target.time = time;
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259 target.timezone = timezone;
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260 target.files = files == null ? new String[0] : files.toArray(new String[files.size()]);
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261 target.comment = comment;
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262 target.extras = extrasMap;
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263 return target;
363
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264 }
129
645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
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265 }
673
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266
196
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267 private static class RawCsetCollector implements Inspector {
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268 final ArrayList<RawChangeset> result;
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269
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270 public RawCsetCollector(int count) {
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271 result = new ArrayList<RawChangeset>(count > 0 ? count : 5);
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272 }
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273
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274 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) {
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275 result.add(cset.clone());
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276 }
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277 }
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278
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279 private static final class RawCsetParser implements RevlogStream.Inspector, Adaptable, Lifecycle {
196
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280
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281 private final Inspector inspector;
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282 private final ChangesetParser csetBuilder;
520
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283 // non-null when inspector uses high-level lifecycle entities (progress and/or cancel supports)
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284 private final LifecycleBridge lifecycleStub;
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285 // non-null when inspector relies on low-level lifecycle and is responsible
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286 // to proceed any possible high-level entities himself.
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287 private final Lifecycle inspectorLifecycle;
196
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288
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289 public RawCsetParser(SessionContext.Source sessionContext, HgChangelog.Inspector delegate) {
196
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290 assert delegate != null;
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291 inspector = delegate;
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292 csetBuilder = new ChangesetParser(sessionContext, new RawCsetFactory(true));
520
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293 inspectorLifecycle = Adaptable.Factory.getAdapter(delegate, Lifecycle.class, null);
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294 if (inspectorLifecycle == null) {
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295 ProgressSupport ph = Adaptable.Factory.getAdapter(delegate, ProgressSupport.class, null);
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296 CancelSupport cs = Adaptable.Factory.getAdapter(delegate, CancelSupport.class, null);
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297 if (cs != null || ph != null) {
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298 lifecycleStub = new LifecycleBridge(ph, cs);
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299 } else {
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300 lifecycleStub = null;
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301 }
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302 } else {
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303 lifecycleStub = null;
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304 }
196
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305 }
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306
628
6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
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307 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess da) throws HgRuntimeException {
196
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308 try {
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309 RawChangeset cset = csetBuilder.parse(da);
196
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310 // XXX there's no guarantee for Changeset.Callback that distinct instance comes each time, consider instance reuse
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311 inspector.next(revisionNumber, Nodeid.fromBinary(nodeid, 0), cset);
520
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312 if (lifecycleStub != null) {
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313 lifecycleStub.nextStep();
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314 }
427
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315 } catch (HgInvalidDataFormatException ex) {
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316 throw ex.setRevisionIndex(revisionNumber);
366
189dc6dc1c3e Use exceptions to expose errors reading mercurial data
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317 } catch (IOException ex) {
423
9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level
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318 // XXX need better exception, perhaps smth like HgChangelogException (extends HgInvalidControlFileException)
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319 throw new HgInvalidControlFileException("Failed reading changelog", ex, null).setRevisionIndex(revisionNumber);
196
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320 }
520
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321 }
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322
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323 public <T> T getAdapter(Class<T> adapterClass) {
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324 if (adapterClass == Lifecycle.class) {
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325 return adapterClass.cast(this);
312
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326 }
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327 // XXX what if caller takes Progress/Cancel (which we update through lifecycleStub, too)
520
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328 return Adaptable.Factory.getAdapter(inspector, adapterClass, null);
312
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329 }
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330
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331 public void start(int count, Callback callback, Object token) {
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332 if (inspectorLifecycle != null) {
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333 inspectorLifecycle.start(count, callback, token);
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334 } else if (lifecycleStub != null) {
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335 lifecycleStub.start(count, callback, token);
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336 }
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337 }
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338
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339 public void finish(Object token) {
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340 if (inspectorLifecycle != null) {
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341 inspectorLifecycle.finish(token);
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342 } else if (lifecycleStub != null) {
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343 lifecycleStub.finish(token);
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344 }
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345 csetBuilder.dispose();
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diff changeset
346 }
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347
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diff changeset
348 }
0
dbd663faec1f Basic changelog parsing
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349 }