Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgChangelog.java @ 560:52263817b998

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Exception when no blocks from merged revision were reported and merge parent was not recorded for future use
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 26 Feb 2013 21:06:43 +0100
parents 1ee452f31187
children c18095eedde0
rev   line source
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1 /*
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2 * Copyright (c) 2010-2012 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.io.UnsupportedEncodingException;
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21 import java.util.ArrayList;
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22 import java.util.Arrays;
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23 import java.util.Calendar;
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24 import java.util.Collections;
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25 import java.util.Date;
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26 import java.util.Formatter;
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27 import java.util.HashMap;
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28 import java.util.List;
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29 import java.util.Locale;
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30 import java.util.Map;
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31 import java.util.TimeZone;
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33 import org.tmatesoft.hg.core.Nodeid;
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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.Lifecycle;
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37 import org.tmatesoft.hg.internal.LifecycleBridge;
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38 import org.tmatesoft.hg.internal.Pool;
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39 import org.tmatesoft.hg.internal.RevlogStream;
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40 import org.tmatesoft.hg.util.Adaptable;
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41 import org.tmatesoft.hg.util.CancelSupport;
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42 import org.tmatesoft.hg.util.ProgressSupport;
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44 /**
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45 * Representation of the Mercurial changelog file (list of ChangeSets)
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46 *
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47 * @author Artem Tikhomirov
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48 * @author TMate Software Ltd.
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49 */
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50 public final class HgChangelog extends Revlog {
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51
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52 /* package-local */HgChangelog(HgRepository hgRepo, RevlogStream content) {
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53 super(hgRepo, content);
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54 }
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56 public void all(final HgChangelog.Inspector inspector) throws HgInvalidRevisionException, HgInvalidControlFileException {
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57 range(0, getLastRevision(), inspector);
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58 }
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60 public void range(int start, int end, final HgChangelog.Inspector inspector) throws HgInvalidRevisionException, HgInvalidControlFileException {
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61 if (inspector == null) {
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62 throw new IllegalArgumentException();
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63 }
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64 content.iterate(start, end, true, new RawCsetParser(inspector));
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65 }
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67 public List<RawChangeset> range(int start, int end) throws HgInvalidRevisionException, HgInvalidControlFileException {
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68 final RawCsetCollector c = new RawCsetCollector(end - start + 1);
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69 range(start, end, c);
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70 return c.result;
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71 }
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73 /**
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74 * Access individual revisions. Note, regardless of supplied revision order, inspector gets
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75 * changesets strictly in the order they are in the changelog.
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76 * @param inspector callback to get changesets
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77 * @param revisions revisions to read, unrestricted ordering.
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78 */
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79 public void range(final HgChangelog.Inspector inspector, final int... revisions) throws HgInvalidRevisionException, HgInvalidControlFileException {
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80 Arrays.sort(revisions);
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81 rangeInternal(inspector, revisions);
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82 }
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84 /**
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85 * Friends-only version of {@link #range(Inspector, int...)}, when callers know array is sorted
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86 */
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87 /*package-local*/ void rangeInternal(HgChangelog.Inspector inspector, int[] sortedRevisions) throws HgInvalidRevisionException, HgInvalidControlFileException {
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88 if (sortedRevisions == null || sortedRevisions.length == 0) {
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89 return;
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90 }
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91 if (inspector == null) {
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92 throw new IllegalArgumentException();
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93 }
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94 content.iterate(sortedRevisions, true, new RawCsetParser(inspector));
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95 }
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97 /**
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98 * @throws HgInvalidRevisionException if supplied nodeid doesn't identify any revision from this revlog
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99 * @throws HgInvalidControlFileException if access to revlog index/data entry failed
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100 */
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101 public RawChangeset changeset(Nodeid nid) throws HgInvalidControlFileException, HgInvalidRevisionException {
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102 int x = getRevisionIndex(nid);
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103 return range(x, x).get(0);
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104 }
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105
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106 @Callback
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107 public interface Inspector {
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108 /**
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109 * Access next changeset
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110 * TODO describe what revisionNumber is when Inspector is used with HgBundle (BAD_REVISION or bundle's local order?)
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111 *
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112 * @param revisionIndex index of revision being inspected, local to the inspected object
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113 * @param nodeid revision being inspected
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114 * @param cset changeset raw data
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115 */
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116 void next(int revisionIndex, Nodeid nodeid, RawChangeset cset);
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117 }
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119 /**
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120 * Entry in the Changelog
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121 */
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122 public static class RawChangeset implements Cloneable /* for those that would like to keep a copy */{
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123 // TODO immutable
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124 private/* final */Nodeid manifest;
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125 private String user;
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126 private String comment;
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127 private List<String> files; // unmodifiable collection (otherwise #files() and implicit #clone() shall be revised)
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128 private Date time;
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129 private int timezone;
161
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130 // http://mercurial.selenic.com/wiki/PruningDeadBranches - Closing changesets can be identified by close=1 in the changeset's extra field.
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131 private Map<String, String> extras;
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132
153
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133 /**
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134 * @see mercurial/changelog.py:read()
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135 *
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136 * <pre>
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137 * format used:
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138 * nodeid\n : manifest node in ascii
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139 * user\n : user, no \n or \r allowed
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140 * time tz extra\n : date (time is int or float, timezone is int)
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141 * : extra is metadatas, encoded and separated by '\0'
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142 * : older versions ignore it
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143 * files\n\n : files modified by the cset, no \n or \r allowed
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144 * (.*) : comment (free text, ideally utf-8)
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145 *
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146 * changelog v0 doesn't use extra
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147 * </pre>
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148 */
154
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149 private RawChangeset() {
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150 }
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151
153
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152 public Nodeid manifest() {
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153 return manifest;
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154 }
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155
153
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156 public String user() {
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157 return user;
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158 }
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159
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160 public String comment() {
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161 return comment;
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162 }
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163
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164 public List<String> files() {
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165 return files;
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166 }
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167
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168 public Date date() {
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169 return time;
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170 }
211
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171
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172 /**
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173 * @return time zone value, as is, positive for Western Hemisphere.
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174 */
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175 public int timezone() {
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176 return timezone;
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177 }
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178
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179 public String dateString() {
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180 // XXX keep once formatted? Perhaps, there's faster way to set up calendar/time zone?
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181 StringBuilder sb = new StringBuilder(30);
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182 Formatter f = new Formatter(sb, Locale.US);
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183 TimeZone tz = TimeZone.getTimeZone(TimeZone.getAvailableIDs(timezone * 1000)[0]);
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184 // apparently timezone field records number of seconds time differs from UTC,
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185 // i.e. value to substract from time to get UTC time. Calendar seems to add
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186 // timezone offset to UTC, instead, hence sign change.
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187 // tz.setRawOffset(timezone * -1000);
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188 Calendar c = Calendar.getInstance(tz, Locale.US);
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189 c.setTime(time);
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190 f.format("%ta %<tb %<td %<tH:%<tM:%<tS %<tY %<tz", c);
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191 return sb.toString();
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192 }
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193
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194 public Map<String, String> extras() {
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195 return extras;
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196 }
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197
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198 public String branch() {
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199 return extras.get("branch");
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200 }
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201
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202 @Override
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203 public String toString() {
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204 StringBuilder sb = new StringBuilder();
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205 sb.append("Changeset {");
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206 sb.append("User: ").append(user).append(", ");
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207 sb.append("Comment: ").append(comment).append(", ");
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208 sb.append("Manifest: ").append(manifest).append(", ");
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209 sb.append("Date: ").append(time).append(", ");
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210 sb.append("Files: ").append(files.size());
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211 for (String s : files) {
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212 sb.append(", ").append(s);
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213 }
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214 if (extras != null) {
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215 sb.append(", Extra: ").append(extras);
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216 }
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217 sb.append("}");
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218 return sb.toString();
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219 }
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220
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221 @Override
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222 public RawChangeset clone() {
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223 try {
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224 return (RawChangeset) super.clone();
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225 } catch (CloneNotSupportedException ex) {
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226 throw new InternalError(ex.toString());
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227 }
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228 }
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229
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230 /*package*/ static RawChangeset parse(DataAccess da) throws IOException, HgInvalidDataFormatException {
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231 byte[] data = da.byteArray();
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232 RawChangeset rv = new RawChangeset();
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233 rv.init(data, 0, data.length, null);
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234 return rv;
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235 }
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236
196
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237 // @param usersPool - it's likely user names get repeated again and again throughout repository. can be null
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238 /* package-local */void init(byte[] data, int offset, int length, Pool<String> usersPool) throws HgInvalidDataFormatException {
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239 final int bufferEndIndex = offset + length;
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240 final byte lineBreak = (byte) '\n';
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241 int breakIndex1 = indexOf(data, lineBreak, offset, bufferEndIndex);
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242 if (breakIndex1 == -1) {
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243 throw new HgInvalidDataFormatException("Bad Changeset data");
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244 }
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245 Nodeid _nodeid = Nodeid.fromAscii(data, 0, breakIndex1);
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246 int breakIndex2 = indexOf(data, lineBreak, breakIndex1 + 1, bufferEndIndex);
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247 if (breakIndex2 == -1) {
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248 throw new HgInvalidDataFormatException("Bad Changeset data");
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249 }
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250 String _user = new String(data, breakIndex1 + 1, breakIndex2 - breakIndex1 - 1);
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251 if (usersPool != null) {
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252 _user = usersPool.unify(_user);
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253 }
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254 int breakIndex3 = indexOf(data, lineBreak, breakIndex2 + 1, bufferEndIndex);
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255 if (breakIndex3 == -1) {
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256 throw new HgInvalidDataFormatException("Bad Changeset data");
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257 }
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258 String _timeString = new String(data, breakIndex2 + 1, breakIndex3 - breakIndex2 - 1);
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259 int space1 = _timeString.indexOf(' ');
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260 if (space1 == -1) {
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261 throw new HgInvalidDataFormatException(String.format("Bad Changeset data: %s in [%d..%d]", "time string", breakIndex2+1, breakIndex3));
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262 }
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263 int space2 = _timeString.indexOf(' ', space1 + 1);
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264 if (space2 == -1) {
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265 space2 = _timeString.length();
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266 }
363
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267 long unixTime = Long.parseLong(_timeString.substring(0, space1));
153
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268 int _timezone = Integer.parseInt(_timeString.substring(space1 + 1, space2));
363
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269 // unixTime is local time, and timezone records difference of the local time to UTC.
153
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270 Date _time = new Date(unixTime * 1000);
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271 String _extras = space2 < _timeString.length() ? _timeString.substring(space2 + 1) : null;
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272 Map<String, String> _extrasMap;
252
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273 final String extras_branch_key = "branch";
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274 if (_extras == null || _extras.trim().length() == 0) {
252
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275 _extrasMap = Collections.singletonMap(extras_branch_key, HgRepository.DEFAULT_BRANCH_NAME);
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276 } else {
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277 _extrasMap = new HashMap<String, String>();
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278 for (String pair : _extras.split("\00")) {
363
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279 pair = decode(pair);
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280 int eq = pair.indexOf(':');
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281 _extrasMap.put(pair.substring(0, eq), pair.substring(eq + 1));
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282 }
252
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283 if (!_extrasMap.containsKey(extras_branch_key)) {
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284 _extrasMap.put(extras_branch_key, HgRepository.DEFAULT_BRANCH_NAME);
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285 }
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286 _extrasMap = Collections.unmodifiableMap(_extrasMap);
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287 }
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288
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289 //
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290 int lastStart = breakIndex3 + 1;
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291 int breakIndex4 = indexOf(data, lineBreak, lastStart, bufferEndIndex);
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292 ArrayList<String> _files = null;
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293 if (breakIndex4 > lastStart) {
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294 // if breakIndex4 == lastStart, we already found \n\n and hence there are no files (e.g. merge revision)
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295 _files = new ArrayList<String>(5);
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296 while (breakIndex4 != -1 && breakIndex4 + 1 < bufferEndIndex) {
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297 _files.add(new String(data, lastStart, breakIndex4 - lastStart));
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298 lastStart = breakIndex4 + 1;
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299 if (data[breakIndex4 + 1] == lineBreak) {
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300 // found \n\n
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301 break;
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302 } else {
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303 breakIndex4 = indexOf(data, lineBreak, lastStart, bufferEndIndex);
129
645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
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304 }
153
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305 }
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306 if (breakIndex4 == -1 || breakIndex4 >= bufferEndIndex) {
427
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307 throw new HgInvalidDataFormatException("Bad Changeset data");
153
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308 }
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309 } else {
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310 breakIndex4--;
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311 }
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312 String _comment;
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313 try {
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314 _comment = new String(data, breakIndex4 + 2, bufferEndIndex - breakIndex4 - 2, "UTF-8");
418
528b6780a8bd A bit of FIXME cleanup (mostly degraded to TODO post 1.0), comments and javadoc
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315 // TODO post-1.0 respect ui.fallbackencoding and try to decode if set; use EncodingHelper
153
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316 } catch (UnsupportedEncodingException ex) {
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317 _comment = "";
366
189dc6dc1c3e Use exceptions to expose errors reading mercurial data
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318 // Could hardly happen
427
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319 throw new HgInvalidDataFormatException("Bad Changeset data", ex);
153
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320 }
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321 // change this instance at once, don't leave it partially changes in case of error
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322 this.manifest = _nodeid;
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323 this.user = _user;
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324 this.time = _time;
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325 this.timezone = _timezone;
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326 this.files = _files == null ? Collections.<String> emptyList() : Collections.unmodifiableList(_files);
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327 this.comment = _comment;
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328 this.extras = _extrasMap;
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329 }
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645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
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330
153
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331 private static int indexOf(byte[] src, byte what, int startOffset, int endIndex) {
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332 for (int i = startOffset; i < endIndex; i++) {
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333 if (src[i] == what) {
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334 return i;
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335 }
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336 }
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337 return -1;
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338 }
363
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339
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340 private static String decode(String s) {
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341 if (s != null && s.indexOf('\\') != -1) {
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diff changeset
342 // TestAuxUtilities#testChangelogExtrasDecode
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diff changeset
343 return s.replace("\\\\", "\\").replace("\\n", "\n").replace("\\r", "\r").replace("\\0", "\00");
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344 }
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345 return s;
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diff changeset
346 }
129
645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
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diff changeset
347 }
645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
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diff changeset
348
196
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diff changeset
349 private static class RawCsetCollector implements Inspector {
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diff changeset
350 final ArrayList<RawChangeset> result;
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351
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352 public RawCsetCollector(int count) {
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diff changeset
353 result = new ArrayList<RawChangeset>(count > 0 ? count : 5);
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354 }
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355
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356 public void next(int revisionNumber, Nodeid nodeid, RawChangeset cset) {
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diff changeset
357 result.add(cset.clone());
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358 }
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359 }
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360
520
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diff changeset
361 private static class RawCsetParser implements RevlogStream.Inspector, Adaptable {
196
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diff changeset
362
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diff changeset
363 private final Inspector inspector;
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364 private final Pool<String> usersPool;
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diff changeset
365 private final RawChangeset cset = new RawChangeset();
520
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diff changeset
366 // non-null when inspector uses high-level lifecycle entities (progress and/or cancel supports)
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diff changeset
367 private final LifecycleBridge lifecycleStub;
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diff changeset
368 // non-null when inspector relies on low-level lifecycle and is responsible
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diff changeset
369 // to proceed any possible high-level entities himself.
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diff changeset
370 private final Lifecycle inspectorLifecycle;
196
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371
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diff changeset
372 public RawCsetParser(HgChangelog.Inspector delegate) {
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diff changeset
373 assert delegate != null;
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374 inspector = delegate;
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diff changeset
375 usersPool = new Pool<String>();
520
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diff changeset
376 inspectorLifecycle = Adaptable.Factory.getAdapter(delegate, Lifecycle.class, null);
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diff changeset
377 if (inspectorLifecycle == null) {
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diff changeset
378 ProgressSupport ph = Adaptable.Factory.getAdapter(delegate, ProgressSupport.class, null);
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diff changeset
379 CancelSupport cs = Adaptable.Factory.getAdapter(delegate, CancelSupport.class, null);
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diff changeset
380 if (cs != null || ph != null) {
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diff changeset
381 lifecycleStub = new LifecycleBridge(ph, cs);
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diff changeset
382 } else {
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diff changeset
383 lifecycleStub = null;
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diff changeset
384 }
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diff changeset
385 } else {
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diff changeset
386 lifecycleStub = null;
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diff changeset
387 }
196
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388 }
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389
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390 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess da) {
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391 try {
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392 byte[] data = da.byteArray();
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393 cset.init(data, 0, data.length, usersPool);
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394 // XXX there's no guarantee for Changeset.Callback that distinct instance comes each time, consider instance reuse
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395 inspector.next(revisionNumber, Nodeid.fromBinary(nodeid, 0), cset);
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396 if (lifecycleStub != null) {
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397 lifecycleStub.nextStep();
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398 }
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399 } catch (HgInvalidDataFormatException ex) {
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400 throw ex.setRevisionIndex(revisionNumber);
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401 } catch (IOException ex) {
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402 // XXX need better exception, perhaps smth like HgChangelogException (extends HgInvalidControlFileException)
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403 throw new HgInvalidControlFileException("Failed reading changelog", ex, null).setRevisionIndex(revisionNumber);
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404 }
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405 }
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406
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407 public <T> T getAdapter(Class<T> adapterClass) {
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408 if (adapterClass == Lifecycle.class) {
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409 if (inspectorLifecycle != null) {
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410 return adapterClass.cast(inspectorLifecycle);
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411 }
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412 // reveal interest in lifecycle only when either progress or cancel support is there
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413 // and inspector itself doesn't respond to lifecycle request
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414 // lifecycleStub may still be null here (no progress and cancel), it's ok to cast(null)
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415 return adapterClass.cast(lifecycleStub);
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416
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417 }
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418 return Adaptable.Factory.getAdapter(inspector, adapterClass, null);
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419 }
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420
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421 }
0
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422 }