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annotate src/org/tmatesoft/hg/core/HgAnnotateCommand.java @ 576:3c4db86e8c1f

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Issue 43: poor performance with InflaterDataAccess. Phase 2: inflate into buffer, effective skip and readByte/readBytes()
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 16 Apr 2013 19:31:57 +0200
parents c4fd1037bc6f
children 0890628ed51e
rev   line source
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1 /*
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2 * Copyright (c) 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.core;
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18
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19 import static org.tmatesoft.hg.repo.HgRepository.NO_REVISION;
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20
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21 import java.util.Arrays;
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22
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23 import org.tmatesoft.hg.internal.Callback;
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24 import org.tmatesoft.hg.internal.CsetParamKeeper;
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25 import org.tmatesoft.hg.internal.Experimental;
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26 import org.tmatesoft.hg.internal.FileAnnotation;
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27 import org.tmatesoft.hg.internal.FileAnnotation.LineDescriptor;
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28 import org.tmatesoft.hg.internal.FileAnnotation.LineInspector;
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29 import org.tmatesoft.hg.repo.HgBlameFacility.BlockData;
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30 import org.tmatesoft.hg.repo.HgBlameFacility;
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31 import org.tmatesoft.hg.repo.HgDataFile;
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32 import org.tmatesoft.hg.repo.HgRepository;
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33 import org.tmatesoft.hg.util.CancelledException;
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34 import org.tmatesoft.hg.util.Path;
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35
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36 /**
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37 * WORK IN PROGRESS. UNSTABLE API
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38 *
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39 * 'hg annotate' counterpart, report origin revision and file line-by-line
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40 *
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41 * @author Artem Tikhomirov
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42 * @author TMate Software Ltd.
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43 */
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44 @Experimental(reason="Work in progress. Unstable API")
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45 public class HgAnnotateCommand extends HgAbstractCommand<HgAnnotateCommand> {
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46
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47 private final HgRepository repo;
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48 private final CsetParamKeeper annotateRevision;
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49 private Path file;
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50 private boolean followRename;
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51
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52 public HgAnnotateCommand(HgRepository hgRepo) {
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53 repo = hgRepo;
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54 annotateRevision = new CsetParamKeeper(repo);
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55 annotateRevision.doSet(HgRepository.TIP);
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56 }
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57
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58 public HgAnnotateCommand changeset(Nodeid nodeid) throws HgBadArgumentException {
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59 annotateRevision.set(nodeid);
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60 return this;
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61 }
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62
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63 public HgAnnotateCommand changeset(int changelogRevIndex) throws HgBadArgumentException {
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64 annotateRevision.set(changelogRevIndex);
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65 return this;
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66 }
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67
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68 /**
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69 * Select file to annotate, origin of renamed/copied file would be followed, too.
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70 *
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71 * @param filePath path relative to repository root
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72 * @return <code>this</code> for convenience
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73 */
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74 public HgAnnotateCommand file(Path filePath) {
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75 return file(filePath, true);
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76 }
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77
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78 /**
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79 * Select file to annotate.
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80 *
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81 * @param filePath path relative to repository root
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82 * @param followCopyRename true to follow copies/renames.
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83 * @return <code>this</code> for convenience
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84 */
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85 public HgAnnotateCommand file(Path filePath, boolean followCopyRename) {
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86 file = filePath;
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87 followRename = followCopyRename;
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88 return this;
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89 }
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90
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91 // TODO [1.1] set encoding and provide String line content from LineInfo
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92
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93 public void execute(Inspector inspector) throws HgException, HgCallbackTargetException, CancelledException {
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94 if (inspector == null) {
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95 throw new IllegalArgumentException();
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96 }
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97 if (file == null) {
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98 throw new HgBadArgumentException("Command needs file argument", null);
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99 }
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100 HgDataFile df = repo.getFileNode(file);
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101 if (!df.exists()) {
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102 return;
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103 }
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104 final int changesetStart = followRename ? 0 : df.getChangesetRevisionIndex(0);
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105 Collector c = new Collector();
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106 FileAnnotation fa = new FileAnnotation(c);
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107 HgBlameFacility af = new HgBlameFacility(df);
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108 af.annotate(changesetStart, annotateRevision.get(), fa, HgIterateDirection.NewToOld);
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109 LineImpl li = new LineImpl();
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110 for (int i = 0; i < c.lineRevisions.length; i++) {
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111 li.init(i+1, c.lineRevisions[i], c.line(i));
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112 inspector.next(li);
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113 }
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114 }
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115
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116 /**
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117 * Callback to receive annotated lines
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118 */
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119 @Callback
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120 public interface Inspector {
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121 // start(FileDescriptor) throws HgCallbackTargetException;
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122 void next(LineInfo lineInfo) throws HgCallbackTargetException;
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123 // end(FileDescriptor) throws HgCallbackTargetException;
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124 }
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125
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126 /**
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127 * Describes a line reported through {@link Inspector#next(LineInfo)}
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128 *
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129 * Clients shall not implement this interface
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130 */
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131 public interface LineInfo {
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132 int getLineNumber();
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133 int getChangesetIndex();
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134 byte[] getContent();
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135 }
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136
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137 // FIXME there's no need in FileAnnotation.LineInspector, merge it here
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138 private static class Collector implements LineInspector {
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139 private int[] lineRevisions;
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140 private byte[][] lines;
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141
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142 Collector() {
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143 }
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144
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145 public void line(int lineNumber, int changesetRevIndex, BlockData lineContent, LineDescriptor ld) {
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146 if (lineRevisions == null) {
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147 lineRevisions = new int [ld.totalLines()];
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148 Arrays.fill(lineRevisions, NO_REVISION);
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149 lines = new byte[ld.totalLines()][];
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150 }
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151 lineRevisions[lineNumber] = changesetRevIndex;
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152 lines[lineNumber] = lineContent.asArray();
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153 }
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154
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155 public byte[] line(int i) {
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156 return lines[i];
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157 }
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158 }
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159
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160
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161 private static class LineImpl implements LineInfo {
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162 private int ln;
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163 private int rev;
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164 private byte[] content;
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165
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166 void init(int line, int csetRev, byte[] cnt) {
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167 ln = line;
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168 rev = csetRev;
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169 content = cnt;
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170 }
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171
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172 public int getLineNumber() {
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173 return ln;
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174 }
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175
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176 public int getChangesetIndex() {
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177 return rev;
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178 }
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179
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180 public byte[] getContent() {
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181 return content;
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182 }
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183 }
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184 }