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annotate src/org/tmatesoft/hg/repo/HgDataFile.java @ 628:6526d8adbc0f

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Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 22 May 2013 15:52:31 +0200
parents b4948b159ab1
children 5f52074707b2
rev   line source
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1 /*
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2 * Copyright (c) 2010-2013 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.repo;
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19 import static org.tmatesoft.hg.repo.HgInternals.wrongRevisionIndex;
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20 import static org.tmatesoft.hg.repo.HgRepository.*;
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21 import static org.tmatesoft.hg.util.LogFacility.Severity.Info;
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22
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23 import java.io.File;
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24 import java.io.FileInputStream;
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25 import java.io.IOException;
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26 import java.nio.ByteBuffer;
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27 import java.nio.channels.FileChannel;
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28 import java.util.Arrays;
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29
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30 import org.tmatesoft.hg.core.HgCallbackTargetException;
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31 import org.tmatesoft.hg.core.HgChangesetFileSneaker;
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32 import org.tmatesoft.hg.core.HgIterateDirection;
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33 import org.tmatesoft.hg.core.Nodeid;
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34 import org.tmatesoft.hg.internal.BlameHelper;
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35 import org.tmatesoft.hg.internal.DataAccess;
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36 import org.tmatesoft.hg.internal.FileHistory;
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37 import org.tmatesoft.hg.internal.FileRevisionHistoryChunk;
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38 import org.tmatesoft.hg.internal.FileUtils;
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39 import org.tmatesoft.hg.internal.FilterByteChannel;
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40 import org.tmatesoft.hg.internal.FilterDataAccess;
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41 import org.tmatesoft.hg.internal.Internals;
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42 import org.tmatesoft.hg.internal.Metadata;
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43 import org.tmatesoft.hg.internal.RevlogStream;
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44 import org.tmatesoft.hg.util.ByteChannel;
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45 import org.tmatesoft.hg.util.CancelSupport;
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46 import org.tmatesoft.hg.util.CancelledException;
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47 import org.tmatesoft.hg.util.LogFacility;
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48 import org.tmatesoft.hg.util.Pair;
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49 import org.tmatesoft.hg.util.Path;
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50 import org.tmatesoft.hg.util.ProgressSupport;
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51
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52
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53 /**
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54 * Regular user data file stored in the repository.
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55 *
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56 * <p> Note, most methods accept index in the file's revision history, not that of changelog. Easy way to obtain
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57 * changeset revision index from file's is to use {@link #getChangesetRevisionIndex(int)}. To obtain file's revision
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58 * index for a given changeset, {@link HgManifest#getFileRevision(int, Path)} or {@link HgChangesetFileSneaker} may
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59 * come handy.
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60 *
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61 * @author Artem Tikhomirov
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62 * @author TMate Software Ltd.
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63 */
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64 public final class HgDataFile extends Revlog {
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65
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66 // absolute from repo root?
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67 // slashes, unix-style?
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68 // repo location agnostic, just to give info to user, not to access real storage
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69 private final Path path;
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70 private Metadata metadata; // get initialized on first access to file content.
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72 /*package-local*/HgDataFile(HgRepository hgRepo, Path filePath, RevlogStream content) {
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73 super(hgRepo, content, false);
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74 path = filePath;
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75 }
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77 // exists is not the best name possible. now it means no file with such name was ever known to the repo.
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78 // it might be confused with files existed before but lately removed. TODO HgFileNode.exists makes more sense.
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79 // or HgDataFile.known()
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80 public boolean exists() {
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81 return content.exists();
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82 }
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83
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84 /**
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85 * Human-readable file name, i.e. "COPYING", not "store/data/_c_o_p_y_i_n_g.i"
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86 */
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87 public Path getPath() {
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88 return path; // hgRepo.backresolve(this) -> name? In this case, what about hashed long names?
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89 }
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90
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91 /**
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92 * Handy shorthand for {@link #getLength(int) length(getRevisionIndex(nodeid))}
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93 *
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94 * @param nodeid revision of the file
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95 *
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96 * @return size of the file content at the given revision
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97 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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98 */
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99 public int getLength(Nodeid nodeid) throws HgRuntimeException {
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100 try {
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101 return getLength(getRevisionIndex(nodeid));
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102 } catch (HgInvalidControlFileException ex) {
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103 throw ex.isRevisionSet() ? ex : ex.setRevision(nodeid);
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104 } catch (HgInvalidRevisionException ex) {
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105 throw ex.isRevisionSet() ? ex : ex.setRevision(nodeid);
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106 }
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107 }
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108
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109 /**
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110 * @param fileRevisionIndex - revision local index, non-negative. From predefined constants, only {@link HgRepository#TIP} makes sense.
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111 * @return size of the file content at the revision identified by local revision number.
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112 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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113 */
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114 public int getLength(int fileRevisionIndex) throws HgRuntimeException {
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115 if (wrongRevisionIndex(fileRevisionIndex) || fileRevisionIndex == BAD_REVISION) {
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116 throw new HgInvalidRevisionException(fileRevisionIndex);
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117 }
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118 if (fileRevisionIndex == TIP) {
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119 fileRevisionIndex = getLastRevision();
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120 } else if (fileRevisionIndex == WORKING_COPY) {
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121 File f = getRepo().getFile(this);
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122 if (f.exists()) {
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123 // single revision can't be greater than 2^32, shall be safe to cast to int
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124 return Internals.ltoi(f.length());
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125 }
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126 Nodeid fileRev = getWorkingCopyRevision();
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127 if (fileRev == null) {
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128 throw new HgInvalidRevisionException(String.format("File %s is not part of working copy", getPath()), null, fileRevisionIndex);
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129 }
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130 fileRevisionIndex = getRevisionIndex(fileRev);
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131 }
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132 if (metadata == null || !metadata.checked(fileRevisionIndex)) {
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133 checkAndRecordMetadata(fileRevisionIndex);
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134 }
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135 final int dataLen = content.dataLength(fileRevisionIndex);
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136 if (metadata.known(fileRevisionIndex)) {
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137 return dataLen - metadata.dataOffset(fileRevisionIndex);
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138 }
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139 return dataLen;
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140 }
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141
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142 /**
237
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143 * Reads content of the file from working directory. If file present in the working directory, its actual content without
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144 * any filters is supplied through the sink. If file does not exist in the working dir, this method provides content of a file
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145 * as if it would be refreshed in the working copy, i.e. its corresponding revision (according to dirstate) is read from the
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146 * repository, and filters repo -> working copy get applied.
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147 *
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148 * NOTE, if file is missing from the working directory and is not part of the dirstate (but otherwise legal repository file,
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149 * e.g. from another branch), no content would be supplied.
237
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150 *
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151 * @param sink content consumer
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152 * @throws CancelledException if execution of the operation was cancelled
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153 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
237
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154 */
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155 public void workingCopy(ByteChannel sink) throws CancelledException, HgRuntimeException {
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156 File f = getRepo().getFile(this);
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157 if (f.exists()) {
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158 final CancelSupport cs = CancelSupport.Factory.get(sink);
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159 final ProgressSupport progress = ProgressSupport.Factory.get(sink);
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160 final long flength = f.length();
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161 final int bsize = (int) Math.min(flength, 32*1024);
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162 progress.start((int) (flength > Integer.MAX_VALUE ? flength >>> 15 /*32 kb buf size*/ : flength));
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163 ByteBuffer buf = ByteBuffer.allocate(bsize);
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164 FileInputStream fis = null;
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165 try {
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166 fis = new FileInputStream(f);
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167 FileChannel fc = fis.getChannel();
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168 while (fc.read(buf) != -1) {
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169 cs.checkCancelled();
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170 buf.flip();
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171 int consumed = sink.write(buf);
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172 progress.worked(flength > Integer.MAX_VALUE ? 1 : consumed);
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173 buf.compact();
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174 }
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175 } catch (IOException ex) {
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176 throw new HgInvalidFileException("Working copy read failed", ex, f);
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177 } finally {
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178 progress.done();
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179 if (fis != null) {
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180 new FileUtils(getRepo().getSessionContext().getLog()).closeQuietly(fis);
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181 }
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182 }
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183 } else {
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184 Nodeid fileRev = getWorkingCopyRevision();
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185 if (fileRev == null) {
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186 // no content for this data file in the working copy - it is not part of the actual working state.
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187 // XXX perhaps, shall report this to caller somehow, not silently pass no data?
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188 return;
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189 }
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190 final int fileRevIndex = getRevisionIndex(fileRev);
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191 contentWithFilters(fileRevIndex, sink);
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192 }
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193 }
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194
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195 /**
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196 * @return file revision as recorded in repository manifest for dirstate parent, or <code>null</code> if no file revision can be found
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197 * @throws HgInvalidControlFileException if failed to access revlog index/data entry. <em>Runtime exception</em>
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198 * @throws HgRuntimeException subclass thereof to indicate other issues with the library. <em>Runtime exception</em>
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199 */
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200 private Nodeid getWorkingCopyRevision() throws HgRuntimeException {
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201 final Pair<Nodeid, Nodeid> wcParents = getRepo().getWorkingCopyParents();
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202 Nodeid p = wcParents.first().isNull() ? wcParents.second() : wcParents.first();
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203 final HgChangelog clog = getRepo().getChangelog();
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204 final int csetRevIndex;
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205 if (p.isNull()) {
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206 // no dirstate parents
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207 getRepo().getSessionContext().getLog().dump(getClass(), Info, "No dirstate parents, resort to TIP", getPath());
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208 // if it's a repository with no dirstate, use TIP then
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209 csetRevIndex = clog.getLastRevision();
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210 if (csetRevIndex == -1) {
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211 // shall not happen provided there's .i for this data file (hence at least one cset)
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212 // and perhaps exception is better here. However, null as "can't find" indication seems reasonable.
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213 return null;
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214 }
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215 } else {
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216 // common case to avoid searching complete changelog for nodeid match
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217 final Nodeid tipRev = clog.getRevision(TIP);
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218 if (tipRev.equals(p)) {
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219 csetRevIndex = clog.getLastRevision();
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220 } else {
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221 // bad luck, need to search honestly
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222 csetRevIndex = clog.getRevisionIndex(p);
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223 }
237
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224 }
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225 Nodeid fileRev = getRepo().getManifest().getFileRevision(csetRevIndex, getPath());
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226 // it's possible for a file to be in working dir and have store/.i but to belong e.g. to a different
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227 // branch than the one from dirstate. Thus it's possible to get null fileRev
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228 // which would serve as an indication this data file is not part of working copy
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229 return fileRev;
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230 }
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231
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232 /**
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233 * Access content of a file revision
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234 * XXX not sure distinct method contentWithFilters() is the best way to do, perhaps, callers shall add filters themselves?
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235 *
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236 * @param fileRevisionIndex - revision local index, non-negative. From predefined constants, {@link HgRepository#TIP} and {@link HgRepository#WORKING_COPY} make sense.
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237 * @param sink content consumer
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238 *
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239 * @throws CancelledException if execution of the operation was cancelled
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240 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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241 */
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242 public void contentWithFilters(int fileRevisionIndex, ByteChannel sink) throws CancelledException, HgRuntimeException {
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243 if (fileRevisionIndex == WORKING_COPY) {
237
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244 workingCopy(sink); // pass un-mangled sink
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245 } else {
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246 content(fileRevisionIndex, new FilterByteChannel(sink, getRepo().getFiltersFromRepoToWorkingDir(getPath())));
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247 }
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248 }
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249
367
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250 /**
396
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251 * Retrieve content of specific revision. Content is provided as is, without any filters (e.g. keywords, eol, etc.) applied.
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252 * For filtered content, use {@link #contentWithFilters(int, ByteChannel)}.
367
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253 *
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254 * @param fileRevisionIndex - revision local index, non-negative. From predefined constants, {@link HgRepository#TIP} and {@link HgRepository#WORKING_COPY} make sense.
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255 * @param sink content consumer
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256 *
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257 * @throws CancelledException if execution of the operation was cancelled
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258 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
367
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259 */
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260 public void content(int fileRevisionIndex, ByteChannel sink) throws CancelledException, HgRuntimeException {
367
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261 // for data files need to check heading of the file content for possible metadata
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262 // @see http://mercurial.selenic.com/wiki/FileFormats#data.2BAC8-
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263 if (fileRevisionIndex == TIP) {
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264 fileRevisionIndex = getLastRevision();
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265 }
367
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266 if (fileRevisionIndex == WORKING_COPY) {
237
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267 // sink is supposed to come into workingCopy without filters
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268 // thus we shall not get here (into #content) from #contentWithFilters(WC)
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269 workingCopy(sink);
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270 return;
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271 }
367
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272 if (wrongRevisionIndex(fileRevisionIndex) || fileRevisionIndex == BAD_REVISION) {
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273 throw new HgInvalidRevisionException(fileRevisionIndex);
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274 }
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275 if (sink == null) {
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276 throw new IllegalArgumentException();
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277 }
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278 if (metadata == null) {
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279 metadata = new Metadata(getRepo());
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280 }
277
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281 ErrorHandlingInspector insp;
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282 final LogFacility lf = getRepo().getSessionContext().getLog();
367
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283 if (metadata.none(fileRevisionIndex)) {
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284 insp = new ContentPipe(sink, 0, lf);
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285 } else if (metadata.known(fileRevisionIndex)) {
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286 insp = new ContentPipe(sink, metadata.dataOffset(fileRevisionIndex), lf);
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287 } else {
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288 // do not know if there's metadata
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289 insp = new MetadataInspector(metadata, new ContentPipe(sink, 0, lf));
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290 }
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291 insp.checkCancelled();
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292 super.content.iterate(fileRevisionIndex, fileRevisionIndex, true, insp);
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293 try {
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294 insp.checkFailed();
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295 } catch (HgInvalidControlFileException ex) {
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296 ex = ex.setFileName(getPath());
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297 throw ex.isRevisionIndexSet() ? ex : ex.setRevisionIndex(fileRevisionIndex);
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298 } catch (IOException ex) {
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299 HgInvalidControlFileException e = new HgInvalidControlFileException("Revision content access failed", ex, null);
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300 throw content.initWithIndexFile(e).setFileName(getPath()).setRevisionIndex(fileRevisionIndex);
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301 }
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302 }
425
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303
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304 /**
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305 * Walk complete change history of the file.
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306 * @param inspector callback to visit changesets
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307 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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308 */
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309 public void history(HgChangelog.Inspector inspector) throws HgRuntimeException {
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310 history(0, getLastRevision(), inspector);
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311 }
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312
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313 /**
425
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314 * Walk subset of the file's change history.
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315 * @param start revision local index, inclusive; non-negative or {@link HgRepository#TIP}
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316 * @param end revision local index, inclusive; non-negative or {@link HgRepository#TIP}
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317 * @param inspector callback to visit changesets
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318 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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319 */
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320 public void history(int start, int end, HgChangelog.Inspector inspector) throws HgRuntimeException {
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321 if (!exists()) {
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322 throw new IllegalStateException("Can't get history of invalid repository file node");
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323 }
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324 final int last = getLastRevision();
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325 if (end == TIP) {
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326 end = last;
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327 }
300
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328 if (start == TIP) {
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329 start = last;
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330 }
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331 HgInternals.checkRevlogRange(start, end, last);
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332
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333 final int[] commitRevisions = new int[end - start + 1];
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334 final boolean[] needsSorting = { false };
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335 RevlogStream.Inspector insp = new RevlogStream.Inspector() {
3
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336 int count = 0;
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9429c7bd1920 Try DataAccess to reach revision data instead of plain byte arrays
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337 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess data) {
242
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338 if (count > 0) {
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339 if (commitRevisions[count -1] > linkRevision) {
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340 needsSorting[0] = true;
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341 }
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342 }
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343 commitRevisions[count++] = linkRevision;
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344 }
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345 };
48
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346 content.iterate(start, end, false, insp);
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347 final HgChangelog changelog = getRepo().getChangelog();
242
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348 if (needsSorting[0]) {
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349 // automatic tools (svnmerge?) produce unnatural file history
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350 // (e.g. cpython/Lib/doctest.py, revision 164 points to cset 63509, 165 - to 38453)
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351 Arrays.sort(commitRevisions);
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352 }
245
2fb439375ddc Avoid sorting revision range twice
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353 changelog.rangeInternal(inspector, commitRevisions);
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354 }
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355
354
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356 /**
367
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357 * For a given revision of the file (identified with revision index), find out index of the corresponding changeset.
354
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358 *
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359 * @return changeset revision index
425
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360 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
354
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361 */
437
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362 public int getChangesetRevisionIndex(int fileRevisionIndex) throws HgRuntimeException {
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363 return content.linkRevision(fileRevisionIndex);
367
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364 }
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365
354
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366 /**
367
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367 * Complements {@link #getChangesetRevisionIndex(int)} to get changeset revision that corresponds to supplied file revision
354
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368 *
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369 * @param nid revision of the file
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370 * @return changeset revision
425
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371 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
354
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372 */
425
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373 public Nodeid getChangesetRevision(Nodeid nid) throws HgRuntimeException {
367
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374 int changelogRevision = getChangesetRevisionIndex(getRevisionIndex(nid));
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375 return getRepo().getChangelog().getRevision(changelogRevision);
61eedab3eb3e Status between two revisions to recognize copy/rename
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diff changeset
376 }
78
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
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diff changeset
377
354
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diff changeset
378 /**
396
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much
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parents: 388
diff changeset
379 * Tells whether this file originates from another repository file
0ae53c32ecef Straighten out exceptions thrown when file access failed - three is too much
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diff changeset
380 * @return <code>true</code> if this file is a copy of another from the repository
425
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381 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
354
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diff changeset
382 */
425
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diff changeset
383 public boolean isCopy() throws HgRuntimeException {
134
afac8ddc5dd2 Keep record if we tried and found no metadata for a given revision
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diff changeset
384 if (metadata == null || !metadata.checked(0)) {
275
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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parents: 245
diff changeset
385 checkAndRecordMetadata(0);
78
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diff changeset
386 }
134
afac8ddc5dd2 Keep record if we tried and found no metadata for a given revision
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diff changeset
387 if (!metadata.known(0)) {
78
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diff changeset
388 return false;
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diff changeset
389 }
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diff changeset
390 return metadata.find(0, "copy") != null;
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diff changeset
391 }
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diff changeset
392
354
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diff changeset
393 /**
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diff changeset
394 * Get name of the file this one was copied from.
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diff changeset
395 *
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diff changeset
396 * @return name of the file origin
425
48f993aa2f41 FIXMEs: exceptions, javadoc
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diff changeset
397 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
354
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diff changeset
398 */
425
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diff changeset
399 public Path getCopySourceName() throws HgRuntimeException {
78
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diff changeset
400 if (isCopy()) {
571
e4ee4bf4c7d0 Let session context control creation of Path instances
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diff changeset
401 Path.Source ps = getRepo().getSessionContext().getPathFactory();
e4ee4bf4c7d0 Let session context control creation of Path instances
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diff changeset
402 return ps.path(metadata.find(0, "copy"));
78
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diff changeset
403 }
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
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diff changeset
404 throw new UnsupportedOperationException(); // XXX REVISIT, think over if Exception is good (clients would check isCopy() anyway, perhaps null is sufficient?)
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diff changeset
405 }
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
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diff changeset
406
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
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parents: 401
diff changeset
407 /**
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
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diff changeset
408 *
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
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diff changeset
409 * @return revision this file was copied from
425
48f993aa2f41 FIXMEs: exceptions, javadoc
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diff changeset
410 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
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diff changeset
411 */
425
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diff changeset
412 public Nodeid getCopySourceRevision() throws HgRuntimeException {
78
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
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diff changeset
413 if (isCopy()) {
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
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diff changeset
414 return Nodeid.fromAscii(metadata.find(0, "copyrev")); // XXX reuse/cache Nodeid
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diff changeset
415 }
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
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diff changeset
416 throw new UnsupportedOperationException();
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
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diff changeset
417 }
417
ccd7d25e5aea New and better name for HgFileInformer - HgChangesetFileSneaker. Explain (comments) ties between HgManifest, HgDataFile, HgChangesetFileSneaker and reasons for method placement
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parents: 416
diff changeset
418
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
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parents: 401
diff changeset
419 /**
417
ccd7d25e5aea New and better name for HgFileInformer - HgChangesetFileSneaker. Explain (comments) ties between HgManifest, HgDataFile, HgChangesetFileSneaker and reasons for method placement
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diff changeset
420 * Get file flags recorded in the manifest
416
d30083c80d52 Better names - non-confusing and aligned with the rest of API
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diff changeset
421 * @param fileRevisionIndex - revision local index, non-negative, or {@link HgRepository#TIP}.
417
ccd7d25e5aea New and better name for HgFileInformer - HgChangesetFileSneaker. Explain (comments) ties between HgManifest, HgDataFile, HgChangesetFileSneaker and reasons for method placement
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parents: 416
diff changeset
422 * @see HgManifest#getFileFlags(int, Path)
425
48f993aa2f41 FIXMEs: exceptions, javadoc
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diff changeset
423 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
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diff changeset
424 */
425
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diff changeset
425 public HgManifest.Flags getFlags(int fileRevisionIndex) throws HgRuntimeException {
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
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diff changeset
426 int changesetRevIndex = getChangesetRevisionIndex(fileRevisionIndex);
417
ccd7d25e5aea New and better name for HgFileInformer - HgChangesetFileSneaker. Explain (comments) ties between HgManifest, HgDataFile, HgChangesetFileSneaker and reasons for method placement
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parents: 416
diff changeset
427 return getRepo().getManifest().getFileFlags(changesetRevIndex, getPath());
415
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diff changeset
428 }
416
d30083c80d52 Better names - non-confusing and aligned with the rest of API
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diff changeset
429
603
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
430 /**
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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diff changeset
431 * mimic 'hg diff -r clogRevIndex1 -r clogRevIndex2'
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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diff changeset
432 */
628
6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
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parents: 625
diff changeset
433 public void diff(int clogRevIndex1, int clogRevIndex2, HgBlameInspector insp) throws HgRuntimeException, HgCallbackTargetException {
603
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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diff changeset
434 int fileRevIndex1 = fileRevIndex(this, clogRevIndex1);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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diff changeset
435 int fileRevIndex2 = fileRevIndex(this, clogRevIndex2);
625
b4948b159ab1 Refactor internals of blame support, tests
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parents: 621
diff changeset
436 BlameHelper bh = new BlameHelper(insp);
b4948b159ab1 Refactor internals of blame support, tests
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diff changeset
437 bh.prepare(this, clogRevIndex1, clogRevIndex2);
603
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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diff changeset
438 bh.diff(fileRevIndex1, clogRevIndex1, fileRevIndex2, clogRevIndex2);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
439 }
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
440
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
441 /**
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
442 * Walk file history up/down to revision at given changeset and report changes for each revision
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
443 */
628
6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
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parents: 625
diff changeset
444 public void annotate(int changelogRevisionIndex, HgBlameInspector insp, HgIterateDirection iterateOrder) throws HgRuntimeException, HgCallbackTargetException {
603
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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diff changeset
445 annotate(0, changelogRevisionIndex, insp, iterateOrder);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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diff changeset
446 }
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
447
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
448 /**
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
449 * Walk file history range and report changes for each revision
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
450 */
628
6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
451 public void annotate(int changelogRevIndexStart, int changelogRevIndexEnd, HgBlameInspector insp, HgIterateDirection iterateOrder) throws HgRuntimeException, HgCallbackTargetException {
603
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
452 if (wrongRevisionIndex(changelogRevIndexStart) || wrongRevisionIndex(changelogRevIndexEnd)) {
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
453 throw new IllegalArgumentException();
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
454 }
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
455 // Note, changelogRevIndexEnd may be TIP, while the code below doesn't tolerate constants
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
456 //
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
457 int lastRevision = getRepo().getChangelog().getLastRevision();
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
458 if (changelogRevIndexEnd == TIP) {
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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diff changeset
459 changelogRevIndexEnd = lastRevision;
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
460 }
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
461 HgInternals.checkRevlogRange(changelogRevIndexStart, changelogRevIndexEnd, lastRevision);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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diff changeset
462 if (!exists()) {
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
463 return;
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
464 }
625
b4948b159ab1 Refactor internals of blame support, tests
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parents: 621
diff changeset
465 BlameHelper bh = new BlameHelper(insp);
b4948b159ab1 Refactor internals of blame support, tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
466 FileHistory fileHistory = bh.prepare(this, changelogRevIndexStart, changelogRevIndexEnd);
b4948b159ab1 Refactor internals of blame support, tests
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parents: 621
diff changeset
467
603
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
468 int[] fileClogParentRevs = new int[2];
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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diff changeset
469 int[] fileParentRevs = new int[2];
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
470 for (FileRevisionHistoryChunk fhc : fileHistory.iterate(iterateOrder)) {
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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diff changeset
471 for (int fri : fhc.fileRevisions(iterateOrder)) {
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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diff changeset
472 int clogRevIndex = fhc.changeset(fri);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
473 // the way we built fileHistory ensures we won't walk past [changelogRevIndexStart..changelogRevIndexEnd]
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
474 assert clogRevIndex >= changelogRevIndexStart;
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
475 assert clogRevIndex <= changelogRevIndexEnd;
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
476 fhc.fillFileParents(fri, fileParentRevs);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
477 fhc.fillCsetParents(fri, fileClogParentRevs);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
478 bh.annotateChange(fri, clogRevIndex, fileParentRevs, fileClogParentRevs);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
479 }
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
480 }
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
481 }
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
482
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
483 /**
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
484 * Annotates changes of the file against its parent(s).
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
485 * Unlike {@link #annotate(HgDataFile, int, Inspector, HgIterateDirection)}, doesn't
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
486 * walk file history, looks at the specified revision only. Handles both parents (if merge revision).
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
487 */
628
6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 625
diff changeset
488 public void annotateSingleRevision(int changelogRevisionIndex, HgBlameInspector insp) throws HgRuntimeException, HgCallbackTargetException {
603
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
489 // TODO detect if file is text/binary (e.g. looking for chars < ' ' and not \t\r\n\f
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
490 int fileRevIndex = fileRevIndex(this, changelogRevisionIndex);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
491 int[] fileRevParents = new int[2];
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
492 parents(fileRevIndex, fileRevParents, null, null);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
493 if (changelogRevisionIndex == TIP) {
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
494 changelogRevisionIndex = getChangesetRevisionIndex(fileRevIndex);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
495 }
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
496 int[] fileClogParentRevs = new int[2];
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
497 fileClogParentRevs[0] = fileRevParents[0] == NO_REVISION ? NO_REVISION : getChangesetRevisionIndex(fileRevParents[0]);
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diff changeset
498 fileClogParentRevs[1] = fileRevParents[1] == NO_REVISION ? NO_REVISION : getChangesetRevisionIndex(fileRevParents[1]);
625
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parents: 621
diff changeset
499 BlameHelper bh = new BlameHelper(insp);
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diff changeset
500 int clogIndexStart = fileClogParentRevs[0] == NO_REVISION ? (fileClogParentRevs[1] == NO_REVISION ? 0 : fileClogParentRevs[1]) : fileClogParentRevs[0];
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diff changeset
501 bh.prepare(this, clogIndexStart, changelogRevisionIndex);
603
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
502 bh.annotateChange(fileRevIndex, changelogRevisionIndex, fileRevParents, fileClogParentRevs);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
503 }
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
504
88
61eedab3eb3e Status between two revisions to recognize copy/rename
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
505 @Override
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 79
diff changeset
506 public String toString() {
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parents: 79
diff changeset
507 StringBuilder sb = new StringBuilder(getClass().getSimpleName());
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diff changeset
508 sb.append('(');
61eedab3eb3e Status between two revisions to recognize copy/rename
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parents: 79
diff changeset
509 sb.append(getPath());
61eedab3eb3e Status between two revisions to recognize copy/rename
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parents: 79
diff changeset
510 sb.append(')');
61eedab3eb3e Status between two revisions to recognize copy/rename
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diff changeset
511 return sb.toString();
61eedab3eb3e Status between two revisions to recognize copy/rename
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parents: 79
diff changeset
512 }
275
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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parents: 245
diff changeset
513
628
6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 625
diff changeset
514 private void checkAndRecordMetadata(int localRev) throws HgRuntimeException {
495
abfbe81154b5 Do not use exception when only metadata processing is needed. For hg4j repo, status 0:-1 changed from 500 to 60 ms
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parents: 490
diff changeset
515 if (metadata == null) {
602
e3717fc7d26f Refactor metadata parsing in HgDataFile, moved to standalone class
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parents: 600
diff changeset
516 metadata = new Metadata(getRepo());
275
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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diff changeset
517 }
495
abfbe81154b5 Do not use exception when only metadata processing is needed. For hg4j repo, status 0:-1 changed from 500 to 60 ms
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
518 // use MetadataInspector without delegate to process metadata only
602
e3717fc7d26f Refactor metadata parsing in HgDataFile, moved to standalone class
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parents: 600
diff changeset
519 RevlogStream.Inspector insp = new MetadataInspector(metadata, null);
495
abfbe81154b5 Do not use exception when only metadata processing is needed. For hg4j repo, status 0:-1 changed from 500 to 60 ms
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parents: 490
diff changeset
520 super.content.iterate(localRev, localRev, true, insp);
275
6d1804fe0ed7 Issue 10: Report file content length with respect of metadata. Respect dirstate parents for WC's status. Exceptions to keep useful attributes of the location
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parents: 245
diff changeset
521 }
603
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
522
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
523
628
6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
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parents: 625
diff changeset
524 private static int fileRevIndex(HgDataFile df, int csetRevIndex) throws HgRuntimeException {
603
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 602
diff changeset
525 Nodeid fileRev = df.getRepo().getManifest().getFileRevision(csetRevIndex, df.getPath());
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
526 return df.getRevisionIndex(fileRev);
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
527 }
707b5c7c6fa4 Refactor HgBlameFacility: relevant action methods moved to proper home (HgDataFile), as facility doesn't provide anything but packaging of relevant methods/interfaces
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parents: 602
diff changeset
528
78
c25c5c348d1b Skip metadata in the beginning of a file content. Parse metadata, recognize copies/renames
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parents: 77
diff changeset
529
277
74e7493a042a Favor delegation over generalization
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 276
diff changeset
530 private static class MetadataInspector extends ErrorHandlingInspector implements RevlogStream.Inspector {
157
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
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parents: 51 148
diff changeset
531 private final Metadata metadata;
277
74e7493a042a Favor delegation over generalization
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diff changeset
532 private final RevlogStream.Inspector delegate;
157
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
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parents: 51 148
diff changeset
533
495
abfbe81154b5 Do not use exception when only metadata processing is needed. For hg4j repo, status 0:-1 changed from 500 to 60 ms
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
534 /**
abfbe81154b5 Do not use exception when only metadata processing is needed. For hg4j repo, status 0:-1 changed from 500 to 60 ms
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
535 * @param _metadata never <code>null</code>
abfbe81154b5 Do not use exception when only metadata processing is needed. For hg4j repo, status 0:-1 changed from 500 to 60 ms
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
536 * @param chain <code>null</code> if no further data processing other than metadata is desired
abfbe81154b5 Do not use exception when only metadata processing is needed. For hg4j repo, status 0:-1 changed from 500 to 60 ms
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
537 */
602
e3717fc7d26f Refactor metadata parsing in HgDataFile, moved to standalone class
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 600
diff changeset
538 public MetadataInspector(Metadata _metadata, RevlogStream.Inspector chain) {
157
d5268ca7715b Merged branch wrap-data-access into default for resource-friendly data access. Updated API to promote that friendliness to clients (channels, not byte[]). More exceptions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 51 148
diff changeset
539 metadata = _metadata;
277
74e7493a042a Favor delegation over generalization
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diff changeset
540 delegate = chain;
74e7493a042a Favor delegation over generalization
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parents: 276
diff changeset
541 setCancelSupport(CancelSupport.Factory.get(chain));
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542 }
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543
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544 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess data) throws HgRuntimeException {
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545 try {
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546 if (metadata.tryRead(revisionNumber, data)) {
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547 // da is in prepared state (i.e. we consumed all bytes up to metadata end).
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548 // However, it's not safe to assume delegate won't call da.reset() for some reason,
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549 // and we need to ensure predictable result.
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550 data.reset();
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551 int offset = metadata.dataOffset(revisionNumber);
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552 data = new FilterDataAccess(data, offset, data.length() - offset);
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553 } else {
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554 data.reset();
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555 }
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556 if (delegate != null) {
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557 delegate.next(revisionNumber, actualLen, baseRevision, linkRevision, parent1Revision, parent2Revision, nodeid, data);
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558 }
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559 } catch (IOException ex) {
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560 recordFailure(ex);
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561 } catch (HgInvalidControlFileException ex) {
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562 recordFailure(ex.isRevisionIndexSet() ? ex : ex.setRevisionIndex(revisionNumber));
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563 }
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564 }
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565
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566 @Override
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567 public void checkFailed() throws HgRuntimeException, IOException, CancelledException {
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568 super.checkFailed();
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569 if (delegate instanceof ErrorHandlingInspector) {
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570 // TODO need to add ErrorDestination (ErrorTarget/Acceptor?) and pass it around (much like CancelSupport get passed)
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571 // so that delegate would be able report its failures directly to caller without this hack
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572 ((ErrorHandlingInspector) delegate).checkFailed();
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573 }
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574 }
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575 }
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576 }