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annotate src/org/tmatesoft/hg/internal/ChangelogEntryBuilder.java @ 709:497e697636fc

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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 fba85bc1dfb8
children
rev   line source
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1 /*
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2 * Copyright (c) 2012-2013 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.internal;
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18
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19 import java.io.ByteArrayOutputStream;
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20 import java.util.ArrayList;
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21 import java.util.Collection;
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22 import java.util.Collections;
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23 import java.util.Iterator;
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24 import java.util.LinkedHashMap;
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25 import java.util.List;
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26 import java.util.Map;
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27 import java.util.Map.Entry;
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28 import java.util.TimeZone;
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29
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30 import org.tmatesoft.hg.core.HgIOException;
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31 import org.tmatesoft.hg.core.Nodeid;
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32 import org.tmatesoft.hg.internal.DataSerializer.DataSource;
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33 import org.tmatesoft.hg.util.Path;
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34
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35 /**
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36 * Builds changelog entry
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37 * @author Artem Tikhomirov
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38 * @author TMate Software Ltd.
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39 */
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40 public class ChangelogEntryBuilder implements DataSource {
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41
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42 private final EncodingHelper encHelper;
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43 private String user;
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44 private List<Path> modifiedFiles;
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45 private final Map<String, String> extrasMap = new LinkedHashMap<String, String>();
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46 private Integer tzOffset;
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47 private Long csetTime;
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48 private Nodeid manifestRev;
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49 private CharSequence comment;
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50
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51 ChangelogEntryBuilder(EncodingHelper encodingHelper) {
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52 encHelper = encodingHelper;
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53 }
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54
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55 public ChangelogEntryBuilder user(String username) {
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56 user = username;
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57 return this;
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58 }
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59
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60 public String user() {
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61 if (user == null) {
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62 // for our testing purposes anything but null is ok. no reason to follow Hg username lookup conventions
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63 user = System.getProperty("user.name");
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64 }
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65 return user;
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66 }
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67
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68 public ChangelogEntryBuilder setModified(Collection<Path> files) {
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69 modifiedFiles = new ArrayList<Path>(files == null ? Collections.<Path>emptyList() : files);
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70 return this;
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71 }
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72
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73 public ChangelogEntryBuilder addModified(Collection<Path> files) {
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74 if (modifiedFiles == null) {
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75 return setModified(files);
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76 }
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77 modifiedFiles.addAll(files);
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78 return this;
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79 }
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80
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81 public ChangelogEntryBuilder branch(String branchName) {
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82 if (branchName == null || "default".equals(branchName)) {
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83 extrasMap.remove("branch");
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84 } else {
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85 extrasMap.put("branch", branchName);
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86 }
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87 return this;
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88 }
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90 public ChangelogEntryBuilder extras(Map<String, String> extras) {
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91 extrasMap.clear();
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92 extrasMap.putAll(extras);
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93 return this;
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94 }
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95
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96 public ChangelogEntryBuilder date(long seconds, int timezoneOffset) {
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97 csetTime = seconds;
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98 tzOffset = timezoneOffset;
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99 return this;
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100 }
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101
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102 public ChangelogEntryBuilder manifest(Nodeid manifestRevision) {
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103 manifestRev = manifestRevision;
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104 return this;
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105 }
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106
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107 public ChangelogEntryBuilder comment(CharSequence commentString) {
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108 comment = commentString;
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109 return this;
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110 }
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111
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112 public void serialize(DataSerializer out) throws HgIOException {
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113 byte[] b = build();
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114 out.write(b, 0, b.length);
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115 }
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116
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117 public int serializeLength() {
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118 return -1;
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119 }
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120
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121 public byte[] build() {
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122 ByteArrayOutputStream out = new ByteArrayOutputStream();
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123 final int LF = '\n';
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124 CharSequence extras = buildExtras();
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125 CharSequence files = buildFiles();
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126 byte[] manifestRevision = manifestRev.toString().getBytes();
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127 byte[] username = encHelper.userToChangeset(user());
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128 out.write(manifestRevision, 0, manifestRevision.length);
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129 out.write(LF);
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130 out.write(username, 0, username.length);
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131 out.write(LF);
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132 final long csetDate = csetTime();
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133 byte[] date = String.format("%d %d", csetDate, csetTimezone(csetDate)).getBytes();
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134 out.write(date, 0, date.length);
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135 if (extras.length() > 0) {
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136 out.write(' ');
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137 byte[] b = extras.toString().getBytes();
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138 out.write(b, 0, b.length);
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139 }
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140 out.write(LF);
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141 byte[] b = encHelper.fileToChangeset(files);
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142 out.write(b, 0, b.length);
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143 out.write(LF);
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144 out.write(LF);
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145 byte[] cmt = encHelper.commentToChangeset(comment);
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146 out.write(cmt, 0, cmt.length);
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147 return out.toByteArray();
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148 }
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149
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150 private CharSequence buildExtras() {
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151 StringBuilder extras = new StringBuilder();
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152 for (Iterator<Entry<String, String>> it = extrasMap.entrySet().iterator(); it.hasNext();) {
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153 final Entry<String, String> next = it.next();
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154 extras.append(encodeExtrasPair(next.getKey()));
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155 extras.append(':');
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156 extras.append(encodeExtrasPair(next.getValue()));
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157 if (it.hasNext()) {
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158 extras.append('\00');
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159 }
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160 }
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161 return extras;
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162 }
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163
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164 private CharSequence buildFiles() {
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165 StringBuilder files = new StringBuilder();
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166 if (modifiedFiles != null) {
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167 Collections.sort(modifiedFiles);
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168 for (Iterator<Path> it = modifiedFiles.iterator(); it.hasNext(); ) {
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169 files.append(it.next());
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170 if (it.hasNext()) {
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171 files.append('\n');
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172 }
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173 }
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174 }
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175 return files;
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176 }
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177
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178 private final static CharSequence encodeExtrasPair(String s) {
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179 if (s != null) {
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180 return s.replace("\\", "\\\\").replace("\n", "\\n").replace("\r", "\\r").replace("\00", "\\0");
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181 }
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182 return s;
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183 }
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184
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185 private long csetTime() {
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186 if (csetTime != null) {
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187 return csetTime;
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188 }
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189 return System.currentTimeMillis() / 1000;
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190 }
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191
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192 private int csetTimezone(long time) {
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193 if (tzOffset != null) {
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194 return tzOffset;
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195 }
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196 return -(TimeZone.getDefault().getOffset(time) / 1000);
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197 }
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198 }