Mercurial > hg4j

annotate src/org/tmatesoft/hg/repo/Changeset.java @ 93:d55d4eedfc57

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Switch to Path instead of String in filenames returned by various status operations
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 27 Jan 2011 21:15:21 +0100
parents 25f2e5d1cd8b
children a3a2e5deb320
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@svnkit.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.UnsupportedEncodingException;
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20 import java.util.ArrayList;
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21 import java.util.Collections;
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22 import java.util.Date;
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23 import java.util.Formatter;
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24 import java.util.HashMap;
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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
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29 import org.tmatesoft.hg.core.Nodeid;
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30
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31 /**
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32 * @see mercurial/changelog.py:read()
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33 * <pre>
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34 format used:
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35 nodeid\n : manifest node in ascii
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36 user\n : user, no \n or \r allowed
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37 time tz extra\n : date (time is int or float, timezone is int)
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38 : extra is metadatas, encoded and separated by '\0'
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39 : older versions ignore it
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40 files\n\n : files modified by the cset, no \n or \r allowed
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41 (.*) : comment (free text, ideally utf-8)
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42
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43 changelog v0 doesn't use extra
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44 * </pre>
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45 *
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46 * @author Artem Tikhomirov
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47 * @author TMate Software Ltd.
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48 */
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49 public class Changeset implements Cloneable /*for those that would like to keep a copy*/ {
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50 // TODO immutable
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51 private /*final*/ Nodeid manifest;
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52 private String user;
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53 private String comment;
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54 private List<String> files; // unmodifiable collection (otherwise #files() and implicit #clone() shall be revised)
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55 private Date time;
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56 private int timezone; // not sure it's of any use
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57 private Map<String,String> extras;
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58
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59 private Changeset() {
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60 }
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61
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62 public Nodeid manifest() {
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63 return manifest;
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64 }
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65
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66 public String user() {
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67 return user;
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68 }
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69
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70 public String comment() {
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71 return comment;
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72 }
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73
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74 public List<String> files() {
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75 return files;
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76 }
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77
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78 public Date date() {
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79 return time;
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80 }
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81
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82 public String dateString() {
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83 StringBuilder sb = new StringBuilder(30);
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84 Formatter f = new Formatter(sb, Locale.US);
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85 f.format("%ta %<tb %<td %<tH:%<tM:%<tS %<tY %<tz", time);
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86 return sb.toString();
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87 }
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88
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89 public Map<String, String> extras() {
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90 return extras;
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91 }
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92
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93 public String branch() {
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94 return extras.get("branch");
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95 }
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96
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97 @Override
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98 public String toString() {
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99 StringBuilder sb = new StringBuilder();
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100 sb.append("Changeset {");
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101 sb.append("User: ").append(user).append(", ");
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102 sb.append("Comment: ").append(comment).append(", ");
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103 sb.append("Manifest: ").append(manifest).append(", ");
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104 sb.append("Date: ").append(time).append(", ");
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105 sb.append("Files: ").append(files.size());
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106 for (String s : files) {
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107 sb.append(", ").append(s);
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108 }
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109 if (extras != null) {
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110 sb.append(", Extra: ").append(extras);
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111 }
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112 sb.append("}");
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113 return sb.toString();
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114 }
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116 @Override
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117 public Changeset clone() {
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118 try {
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119 return (Changeset) super.clone();
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120 } catch (CloneNotSupportedException ex) {
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121 throw new InternalError(ex.toString());
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122 }
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123 }
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124
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125 public static Changeset parse(byte[] data, int offset, int length) {
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126 Changeset rv = new Changeset();
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127 rv.init(data, offset, length);
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128 return rv;
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129 }
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130
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131 /*package-local*/ void init(byte[] data, int offset, int length) {
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132 final int bufferEndIndex = offset + length;
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133 final byte lineBreak = (byte) '\n';
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134 int breakIndex1 = indexOf(data, lineBreak, offset, bufferEndIndex);
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135 if (breakIndex1 == -1) {
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136 throw new IllegalArgumentException("Bad Changeset data");
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137 }
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138 Nodeid _nodeid = Nodeid.fromAscii(data, 0, breakIndex1);
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139 int breakIndex2 = indexOf(data, lineBreak, breakIndex1+1, bufferEndIndex);
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140 if (breakIndex2 == -1) {
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141 throw new IllegalArgumentException("Bad Changeset data");
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142 }
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143 String _user = new String(data, breakIndex1+1, breakIndex2 - breakIndex1 - 1);
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144 int breakIndex3 = indexOf(data, lineBreak, breakIndex2+1, bufferEndIndex);
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145 if (breakIndex3 == -1) {
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146 throw new IllegalArgumentException("Bad Changeset data");
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147 }
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148 String _timeString = new String(data, breakIndex2+1, breakIndex3 - breakIndex2 - 1);
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149 int space1 = _timeString.indexOf(' ');
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150 if (space1 == -1) {
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151 throw new IllegalArgumentException("Bad Changeset data");
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152 }
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153 int space2 = _timeString.indexOf(' ', space1+1);
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154 if (space2 == -1) {
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155 space2 = _timeString.length();
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156 }
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157 long unixTime = Long.parseLong(_timeString.substring(0, space1)); // XXX Float, perhaps
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158 int _timezone = Integer.parseInt(_timeString.substring(space1+1, space2));
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159 // 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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160 // on commit and timezone is recorded to adjust it to UTC.
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161 Date _time = new Date(unixTime * 1000);
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162 String _extras = space2 < _timeString.length() ? _timeString.substring(space2+1) : null;
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163 Map<String, String> _extrasMap;
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164 if (_extras == null) {
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165 _extrasMap = Collections.singletonMap("branch", "default");
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166 } else {
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167 _extrasMap = new HashMap<String, String>();
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168 for (String pair : _extras.split("\00")) {
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169 int eq = pair.indexOf(':');
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170 // FIXME need to decode key/value, @see changelog.py:decodeextra
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171 _extrasMap.put(pair.substring(0, eq), pair.substring(eq+1));
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172 }
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173 if (!_extrasMap.containsKey("branch")) {
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174 _extrasMap.put("branch", "default");
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175 }
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176 _extrasMap = Collections.unmodifiableMap(_extrasMap);
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177 }
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178
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179 //
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180 int lastStart = breakIndex3 + 1;
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181 int breakIndex4 = indexOf(data, lineBreak, lastStart, bufferEndIndex);
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182 ArrayList<String> _files = null;
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183 if (breakIndex4 > lastStart) {
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184 // if breakIndex4 == lastStart, we already found \n\n and hence there are no files (e.g. merge revision)
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185 _files = new ArrayList<String>(5);
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186 while (breakIndex4 != -1 && breakIndex4 + 1 < bufferEndIndex) {
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187 _files.add(new String(data, lastStart, breakIndex4 - lastStart));
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188 lastStart = breakIndex4 + 1;
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189 if (data[breakIndex4 + 1] == lineBreak) {
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190 // found \n\n
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191 break;
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192 } else {
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193 breakIndex4 = indexOf(data, lineBreak, lastStart, bufferEndIndex);
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194 }
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195 }
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196 if (breakIndex4 == -1 || breakIndex4 >= bufferEndIndex) {
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197 throw new IllegalArgumentException("Bad Changeset data");
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198 }
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199 } else {
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200 breakIndex4--;
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201 }
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202 String _comment;
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203 try {
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204 _comment = new String(data, breakIndex4+2, bufferEndIndex - breakIndex4 - 2, "UTF-8");
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205 } catch (UnsupportedEncodingException ex) {
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206 _comment = "";
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207 throw new IllegalStateException("Could hardly happen");
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208 }
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209 // change this instance at once, don't leave it partially changes in case of error
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210 this.manifest = _nodeid;
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211 this.user = _user;
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212 this.time = _time;
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213 this.timezone = _timezone;
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214 this.files = _files == null ? Collections.<String>emptyList() : Collections.unmodifiableList(_files);
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215 this.comment = _comment;
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216 this.extras = _extrasMap;
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217 }
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218
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219 private static int indexOf(byte[] src, byte what, int startOffset, int endIndex) {
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220 for (int i = startOffset; i < endIndex; i++) {
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221 if (src[i] == what) {
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222 return i;
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223 }
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224 }
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225 return -1;
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226 }
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227
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228 public interface Inspector {
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229 // first(), last(), single().
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230 // <T>
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231 // TODO describe whether cset is new instance each time
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232 void next(int revisionNumber, Nodeid nodeid, Changeset cset);
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233 }
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234 }