Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgChangelog.java @ 156:643ddec3be36

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Investigate pull/clone functionality
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 02 Mar 2011 01:06:09 +0100
parents ba2bf656f00f
children d5268ca7715b
rev   line source
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1 /*
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2 * Copyright (c) 2010-2011 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.repo;
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19 import java.io.UnsupportedEncodingException;
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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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32 import org.tmatesoft.hg.core.Nodeid;
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33 import org.tmatesoft.hg.internal.RevlogStream;
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34
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35 /**
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36 * Representation of the Mercurial changelog file (list of ChangeSets)
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37 *
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38 * @author Artem Tikhomirov
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39 * @author TMate Software Ltd.
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40 */
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41 public class HgChangelog extends Revlog {
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42
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43 /* package-local */HgChangelog(HgRepository hgRepo, RevlogStream content) {
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44 super(hgRepo, content);
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45 }
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46
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47 public void all(final HgChangelog.Inspector inspector) {
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48 range(0, getLastRevision(), inspector);
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49 }
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50
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51 public void range(int start, int end, final HgChangelog.Inspector inspector) {
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52 RevlogStream.Inspector i = new RevlogStream.Inspector() {
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53
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54 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, byte[] data) {
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55 RawChangeset cset = RawChangeset.parse(data, 0, data.length);
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56 // XXX there's no guarantee for Changeset.Callback that distinct instance comes each time, consider instance reuse
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57 inspector.next(revisionNumber, Nodeid.fromBinary(nodeid, 0), cset);
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58 }
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59 };
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60 content.iterate(start, end, true, i);
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61 }
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62
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63 public List<RawChangeset> range(int start, int end) {
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64 final ArrayList<RawChangeset> rv = new ArrayList<RawChangeset>(end - start + 1);
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65 RevlogStream.Inspector i = new RevlogStream.Inspector() {
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67 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, byte[] data) {
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68 RawChangeset cset = RawChangeset.parse(data, 0, data.length);
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69 rv.add(cset);
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70 }
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71 };
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72 content.iterate(start, end, true, i);
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73 return rv;
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74 }
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76 public void range(final HgChangelog.Inspector inspector, final int... revisions) {
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77 if (revisions == null || revisions.length == 0) {
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78 return;
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79 }
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80 RevlogStream.Inspector i = new RevlogStream.Inspector() {
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82 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, byte[] data) {
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83 if (Arrays.binarySearch(revisions, revisionNumber) >= 0) {
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84 RawChangeset cset = RawChangeset.parse(data, 0, data.length);
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85 inspector.next(revisionNumber, Nodeid.fromBinary(nodeid, 0), cset);
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86 }
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87 }
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88 };
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89 Arrays.sort(revisions);
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90 content.iterate(revisions[0], revisions[revisions.length - 1], true, i);
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91 }
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93 public interface Inspector {
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94 // TODO describe whether cset is new instance each time
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95 void next(int revisionNumber, Nodeid nodeid, RawChangeset cset);
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96 }
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98 /**
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99 * Entry in the Changelog
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100 */
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101 public static class RawChangeset implements Cloneable /* for those that would like to keep a copy */{
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102 // TODO immutable
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103 private/* final */Nodeid manifest;
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104 private String user;
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105 private String comment;
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106 private List<String> files; // unmodifiable collection (otherwise #files() and implicit #clone() shall be revised)
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107 private Date time;
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108 private int timezone;
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109 private Map<String, String> extras;
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110
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111 /**
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112 * @see mercurial/changelog.py:read()
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113 *
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114 * <pre>
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115 * format used:
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116 * nodeid\n : manifest node in ascii
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117 * user\n : user, no \n or \r allowed
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118 * time tz extra\n : date (time is int or float, timezone is int)
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119 * : extra is metadatas, encoded and separated by '\0'
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120 * : older versions ignore it
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121 * files\n\n : files modified by the cset, no \n or \r allowed
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122 * (.*) : comment (free text, ideally utf-8)
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123 *
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124 * changelog v0 doesn't use extra
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125 * </pre>
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126 */
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127 private RawChangeset() {
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128 }
129
645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
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129
153
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130 public Nodeid manifest() {
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131 return manifest;
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132 }
129
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133
153
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134 public String user() {
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135 return user;
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136 }
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137
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138 public String comment() {
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139 return comment;
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140 }
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141
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142 public List<String> files() {
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143 return files;
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144 }
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145
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146 public Date date() {
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147 return time;
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148 }
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149
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150 public String dateString() {
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151 // XXX keep once formatted? Perhaps, there's faster way to set up calendar/time zone?
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152 StringBuilder sb = new StringBuilder(30);
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153 Formatter f = new Formatter(sb, Locale.US);
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154 TimeZone tz = TimeZone.getTimeZone("GMT");
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155 // apparently timezone field records number of seconds time differs from UTC,
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156 // i.e. value to substract from time to get UTC time. Calendar seems to add
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157 // timezone offset to UTC, instead, hence sign change.
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158 tz.setRawOffset(timezone * -1000);
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159 Calendar c = Calendar.getInstance(tz, Locale.US);
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160 c.setTime(time);
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161 f.format("%ta %<tb %<td %<tH:%<tM:%<tS %<tY %<tz", c);
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162 return sb.toString();
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163 }
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164
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165 public Map<String, String> extras() {
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166 return extras;
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167 }
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168
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169 public String branch() {
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170 return extras.get("branch");
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171 }
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172
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173 @Override
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174 public String toString() {
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175 StringBuilder sb = new StringBuilder();
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176 sb.append("Changeset {");
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177 sb.append("User: ").append(user).append(", ");
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178 sb.append("Comment: ").append(comment).append(", ");
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179 sb.append("Manifest: ").append(manifest).append(", ");
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180 sb.append("Date: ").append(time).append(", ");
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181 sb.append("Files: ").append(files.size());
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182 for (String s : files) {
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183 sb.append(", ").append(s);
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184 }
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185 if (extras != null) {
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186 sb.append(", Extra: ").append(extras);
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187 }
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188 sb.append("}");
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189 return sb.toString();
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190 }
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191
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192 @Override
154
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193 public RawChangeset clone() {
153
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194 try {
154
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195 return (RawChangeset) super.clone();
153
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196 } catch (CloneNotSupportedException ex) {
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197 throw new InternalError(ex.toString());
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198 }
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199 }
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200
154
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201 public static RawChangeset parse(byte[] data, int offset, int length) {
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202 RawChangeset rv = new RawChangeset();
153
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203 rv.init(data, offset, length);
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204 return rv;
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205 }
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206
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207 /* package-local */void init(byte[] data, int offset, int length) {
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208 final int bufferEndIndex = offset + length;
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209 final byte lineBreak = (byte) '\n';
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210 int breakIndex1 = indexOf(data, lineBreak, offset, bufferEndIndex);
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211 if (breakIndex1 == -1) {
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212 throw new IllegalArgumentException("Bad Changeset data");
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213 }
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214 Nodeid _nodeid = Nodeid.fromAscii(data, 0, breakIndex1);
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215 int breakIndex2 = indexOf(data, lineBreak, breakIndex1 + 1, bufferEndIndex);
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216 if (breakIndex2 == -1) {
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217 throw new IllegalArgumentException("Bad Changeset data");
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218 }
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219 String _user = new String(data, breakIndex1 + 1, breakIndex2 - breakIndex1 - 1);
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220 int breakIndex3 = indexOf(data, lineBreak, breakIndex2 + 1, bufferEndIndex);
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diff changeset
221 if (breakIndex3 == -1) {
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222 throw new IllegalArgumentException("Bad Changeset data");
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223 }
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224 String _timeString = new String(data, breakIndex2 + 1, breakIndex3 - breakIndex2 - 1);
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diff changeset
225 int space1 = _timeString.indexOf(' ');
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diff changeset
226 if (space1 == -1) {
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diff changeset
227 throw new IllegalArgumentException("Bad Changeset data");
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diff changeset
228 }
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diff changeset
229 int space2 = _timeString.indexOf(' ', space1 + 1);
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diff changeset
230 if (space2 == -1) {
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diff changeset
231 space2 = _timeString.length();
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diff changeset
232 }
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diff changeset
233 long unixTime = Long.parseLong(_timeString.substring(0, space1)); // XXX Float, perhaps
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diff changeset
234 int _timezone = Integer.parseInt(_timeString.substring(space1 + 1, space2));
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diff changeset
235 // XXX not sure need to add timezone here - I can't figure out whether Hg keeps GMT time, and records timezone just for info, or unixTime is taken local
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diff changeset
236 // on commit and timezone is recorded to adjust it to UTC.
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diff changeset
237 Date _time = new Date(unixTime * 1000);
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diff changeset
238 String _extras = space2 < _timeString.length() ? _timeString.substring(space2 + 1) : null;
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diff changeset
239 Map<String, String> _extrasMap;
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diff changeset
240 if (_extras == null) {
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diff changeset
241 _extrasMap = Collections.singletonMap("branch", "default");
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diff changeset
242 } else {
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diff changeset
243 _extrasMap = new HashMap<String, String>();
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diff changeset
244 for (String pair : _extras.split("\00")) {
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diff changeset
245 int eq = pair.indexOf(':');
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diff changeset
246 // FIXME need to decode key/value, @see changelog.py:decodeextra
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diff changeset
247 _extrasMap.put(pair.substring(0, eq), pair.substring(eq + 1));
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diff changeset
248 }
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diff changeset
249 if (!_extrasMap.containsKey("branch")) {
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diff changeset
250 _extrasMap.put("branch", "default");
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diff changeset
251 }
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diff changeset
252 _extrasMap = Collections.unmodifiableMap(_extrasMap);
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diff changeset
253 }
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diff changeset
254
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diff changeset
255 //
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diff changeset
256 int lastStart = breakIndex3 + 1;
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diff changeset
257 int breakIndex4 = indexOf(data, lineBreak, lastStart, bufferEndIndex);
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diff changeset
258 ArrayList<String> _files = null;
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diff changeset
259 if (breakIndex4 > lastStart) {
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diff changeset
260 // if breakIndex4 == lastStart, we already found \n\n and hence there are no files (e.g. merge revision)
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diff changeset
261 _files = new ArrayList<String>(5);
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diff changeset
262 while (breakIndex4 != -1 && breakIndex4 + 1 < bufferEndIndex) {
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diff changeset
263 _files.add(new String(data, lastStart, breakIndex4 - lastStart));
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diff changeset
264 lastStart = breakIndex4 + 1;
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diff changeset
265 if (data[breakIndex4 + 1] == lineBreak) {
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diff changeset
266 // found \n\n
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diff changeset
267 break;
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diff changeset
268 } else {
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diff changeset
269 breakIndex4 = indexOf(data, lineBreak, lastStart, bufferEndIndex);
129
645829962785 core.Cset renamed to HgChangeset; repo.Changeset moved into HgChangelog
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diff changeset
270 }
153
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diff changeset
271 }
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diff changeset
272 if (breakIndex4 == -1 || breakIndex4 >= bufferEndIndex) {
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diff changeset
273 throw new IllegalArgumentException("Bad Changeset data");
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274 }
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275 } else {
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276 breakIndex4--;
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277 }
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278 String _comment;
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279 try {
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280 _comment = new String(data, breakIndex4 + 2, bufferEndIndex - breakIndex4 - 2, "UTF-8");
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281 // FIXME respect ui.fallbackencoding and try to decode if set
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282 } catch (UnsupportedEncodingException ex) {
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283 _comment = "";
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284 throw new IllegalStateException("Could hardly happen");
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285 }
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286 // change this instance at once, don't leave it partially changes in case of error
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287 this.manifest = _nodeid;
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288 this.user = _user;
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289 this.time = _time;
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290 this.timezone = _timezone;
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291 this.files = _files == null ? Collections.<String> emptyList() : Collections.unmodifiableList(_files);
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292 this.comment = _comment;
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293 this.extras = _extrasMap;
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294 }
129
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295
153
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296 private static int indexOf(byte[] src, byte what, int startOffset, int endIndex) {
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297 for (int i = startOffset; i < endIndex; i++) {
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298 if (src[i] == what) {
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299 return i;
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300 }
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301 }
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302 return -1;
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303 }
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304 }
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305
0
dbd663faec1f Basic changelog parsing
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306 }