Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgManifest.java @ 608:e1b29756f901

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Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 07 May 2013 21:27:51 +0200
parents 66f1cc23b906
children 6526d8adbc0f
rev   line source
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df8c67f3006a Basic manifest parsing to analyze what's in there
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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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a3a2e5deb320 Updated contact address to support@hg4j.com
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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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18
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6952d9ce97f1 Handle missing manifest revision case (brought up with Issue 23), do my best to report missing manifests when walking few manifest revisions
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19 import static org.tmatesoft.hg.core.Nodeid.NULL;
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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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23 import java.io.IOException;
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24 import java.util.Arrays;
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ccd7d25e5aea New and better name for HgFileInformer - HgChangesetFileSneaker. Explain (comments) ties between HgManifest, HgDataFile, HgChangesetFileSneaker and reasons for method placement
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26 import org.tmatesoft.hg.core.HgChangesetFileSneaker;
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27 import org.tmatesoft.hg.core.Nodeid;
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28 import org.tmatesoft.hg.internal.ByteVector;
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29 import org.tmatesoft.hg.internal.Callback;
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30 import org.tmatesoft.hg.internal.DataAccess;
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31 import org.tmatesoft.hg.internal.DigestHelper;
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32 import org.tmatesoft.hg.internal.EncodingHelper;
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33 import org.tmatesoft.hg.internal.IdentityPool;
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34 import org.tmatesoft.hg.internal.IntMap;
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35 import org.tmatesoft.hg.internal.IntVector;
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36 import org.tmatesoft.hg.internal.IterateControlMediator;
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37 import org.tmatesoft.hg.internal.Lifecycle;
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38 import org.tmatesoft.hg.internal.RevisionLookup;
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39 import org.tmatesoft.hg.internal.RevlogStream;
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40 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
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41 import org.tmatesoft.hg.util.CancelSupport;
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42 import org.tmatesoft.hg.util.LogFacility.Severity;
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43 import org.tmatesoft.hg.util.Path;
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44 import org.tmatesoft.hg.util.ProgressSupport;
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45
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47 /**
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48 * Representation of Mercurial manifest file (list of file names and their revisions in a particular changeset)
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49 *
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50 * @see http://mercurial.selenic.com/wiki/Manifest
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51 * @author Artem Tikhomirov
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52 * @author TMate Software Ltd.
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53 */
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54 public final class HgManifest extends Revlog {
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55 private RevisionMapper revisionMap;
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56 private final EncodingHelper encodingHelper;
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57 private final Path.Source pathFactory;
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58 private final RevlogStream.Observer revisionMapCleaner = new RevlogStream.Observer() {
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59 public void reloaded(RevlogStream src) {
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60 revisionMap = null;
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61 // TODO RevlogDerivedCache<T> class, to wrap revisionMap and super.revisionLookup
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62 // and their respective cleanup observers, or any other all-in-one alternative
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63 // not to keep both field and it's cleaner
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64 }
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65 };
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66
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67 /**
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68 * File flags recorded in manifest
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69 */
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70 public enum Flags {
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71 /**
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72 * Executable bit set
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73 */
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74 Exec,
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75 /**
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76 * Symbolic link
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77 */
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78 Link,
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79 /**
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80 * Regular file
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81 */
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82 RegularFile;
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83
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84 static Flags parse(String flags) {
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85 if ("x".equalsIgnoreCase(flags)) {
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86 return Exec;
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87 }
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88 if ("l".equalsIgnoreCase(flags)) {
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89 return Link;
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90 }
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91 if (flags == null) {
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92 return RegularFile;
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93 }
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94 throw new IllegalStateException(flags);
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95 }
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96
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97 static Flags parse(byte[] data, int start, int length) {
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98 if (length == 0) {
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99 return RegularFile;
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100 }
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101 if (length == 1) {
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102 if (data[start] == 'x') {
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103 return Exec;
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104 }
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105 if (data[start] == 'l') {
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106 return Link;
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107 }
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108 // FALL THROUGH
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109 }
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110 throw new IllegalStateException(new String(data, start, length));
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111 }
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113 static Flags parse(int dirstateFileMode) {
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114 // source/include/linux/stat.h
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115 final int S_IFLNK = 0120000, S_IXUSR = 00100;
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116 if ((dirstateFileMode & S_IFLNK) == S_IFLNK) {
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117 return Link;
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118 }
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119 if ((dirstateFileMode & S_IXUSR) == S_IXUSR) {
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120 return Exec;
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121 }
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122 return RegularFile;
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123 }
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124
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125 String nativeString() {
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126 if (this == Exec) {
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127 return "x";
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128 }
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129 if (this == Link) {
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130 return "l";
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131 }
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132 if (this == RegularFile) {
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133 return "";
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134 }
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135 throw new IllegalStateException(toString());
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136 }
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137
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138 public int fsMode() {
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139 if (this == Exec) {
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140 return 0755;
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141 }
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142 return 0644;
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143 }
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144 }
2
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145
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146 /*package-local*/ HgManifest(HgRepository hgRepo, RevlogStream content, EncodingHelper eh) {
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147 super(hgRepo, content, true);
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148 encodingHelper = eh;
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149 pathFactory = hgRepo.getSessionContext().getPathFactory();
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150 }
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151
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152 /**
390
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153 * Walks manifest revisions that correspond to specified range of changesets. The order in which manifest versions get reported
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154 * to the inspector corresponds to physical order of manifest revisions, not that of changesets (with few exceptions as noted below).
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155 * That is, for cset-manifest revision pairs:
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156 * <pre>
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157 * 3 8
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158 * 4 7
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159 * 5 9
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160 * </pre>
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161 * call <code>walk(3,5, insp)</code> would yield (4,7), (3,8) and (5,9) to the inspector;
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162 * different order of arguments, <code>walk(5, 3, insp)</code>, makes no difference.
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163 *
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164 * <p>Physical layout of mercurial files (revlog) doesn't impose any restriction on whether manifest and changeset revisions shall go
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165 * incrementally, nor it mandates presence of manifest version for a changeset. Thus, there might be changesets that record {@link Nodeid#NULL}
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166 * as corresponding manifest revision. This situation is deemed exceptional now and what would <code>inspector</code> get depends on whether
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167 * <code>start</code> or <code>end</code> arguments point to such changeset, or such changeset happen to be somewhere inside the range
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168 * <code>[start..end]</code>. Implementation does it best to report empty manifests
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169 * (<code>Inspector.begin(HgRepository.NO_REVISION, NULL, csetRevIndex);</code>
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170 * followed immediately by <code>Inspector.end(HgRepository.NO_REVISION)</code>
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171 * when <code>start</code> and/or <code>end</code> point to changeset with no associated
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172 * manifest revision. However, if changeset-manifest revision pairs look like:
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173 * <pre>
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174 * 3 8
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175 * 4 -1 (cset records null revision for manifest)
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176 * 5 9
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177 * </pre>
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178 * call <code>walk(3,5, insp)</code> would yield only (3,8) and (5,9) to the inspector, without additional empty
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179 * <code>Inspector.begin(); Inspector.end()</code> call pair.
218
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180 *
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181 * @see HgRepository#NO_REVISION
218
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182 * @param start changelog (not manifest!) revision to begin with
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183 * @param end changelog (not manifest!) revision to stop, inclusive.
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184 * @param inspector manifest revision visitor, can't be <code>null</code>
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185 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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186 * @throws IllegalArgumentException if inspector callback is <code>null</code>
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187 */
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188 public void walk(int start, int end, final Inspector inspector) throws HgRuntimeException, IllegalArgumentException {
196
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189 if (inspector == null) {
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190 throw new IllegalArgumentException();
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191 }
390
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192 final int csetFirst = start <= end ? start : end, csetLast = start > end ? start : end;
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193 int manifestFirst, manifestLast, i = 0;
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194 do {
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195 manifestFirst = fromChangelog(csetFirst+i);
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196 if (manifestFirst == BAD_REVISION) {
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197 inspector.begin(NO_REVISION, NULL, csetFirst+i);
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198 inspector.end(NO_REVISION);
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199 }
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200 i++;
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201 } while (manifestFirst == BAD_REVISION && csetFirst+i <= csetLast);
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202 if (manifestFirst == BAD_REVISION) {
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203 getRepo().getSessionContext().getLog().dump(getClass(), Info, "None of changesets [%d..%d] have associated manifest revision", csetFirst, csetLast);
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204 // we ran through all revisions in [start..end] and none of them had manifest.
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205 // we reported that to inspector and proceeding is done now.
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206 return;
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207 }
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208 i = 0;
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209 do {
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210 manifestLast = fromChangelog(csetLast-i);
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211 if (manifestLast == BAD_REVISION) {
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212 inspector.begin(NO_REVISION, NULL, csetLast-i);
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213 inspector.end(NO_REVISION);
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214 }
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215 i++;
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216 } while (manifestLast == BAD_REVISION && csetLast-i >= csetFirst);
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217 if (manifestLast == BAD_REVISION) {
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218 // hmm, manifestFirst != BAD_REVISION here, hence there's i from [csetFirst..csetLast] for which manifest entry exists,
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219 // and thus it's impossible to run into manifestLast == BAD_REVISION. Nevertheless, never hurts to check.
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220 throw new HgInvalidStateException(String.format("Manifest %d-%d(!) for cset range [%d..%d] ", manifestFirst, manifestLast, csetFirst, csetLast));
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221 }
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222 if (manifestLast < manifestFirst) {
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223 // there are tool-constructed repositories that got order of changeset revisions completely different from that of manifest
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224 int x = manifestLast;
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225 manifestLast = manifestFirst;
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226 manifestFirst = x;
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227 }
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228 content.iterate(manifestFirst, manifestLast, true, new ManifestParser(inspector));
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229 }
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230
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231 /**
390
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232 * "Sparse" iteration of the manifest, more effective than accessing revisions one by one.
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233 * <p> Inspector is invoked for each changeset revision supplied, even when there's no manifest
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234 * revision associated with a changeset (@see {@link #walk(int, int, Inspector)} for more details when it happens). Order inspector
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235 * gets invoked doesn't resemble order of changeset revisions supplied, manifest revisions are reported in the order they appear
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236 * in manifest revlog (with exception of changesets with missing manifest that may be reported in any order).
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237 *
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238 * @param inspector manifest revision visitor, can't be <code>null</code>
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239 * @param revisionIndexes local indexes of changesets to visit, non-<code>null</code>
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240 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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241 * @throws InvalidArgumentException if supplied arguments are <code>null</code>s
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242 */
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243 public void walk(final Inspector inspector, int... revisionIndexes) throws HgRuntimeException, IllegalArgumentException {
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244 if (inspector == null || revisionIndexes == null) {
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245 throw new IllegalArgumentException();
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246 }
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247 int[] manifestRevs = toManifestRevisionIndexes(revisionIndexes, inspector);
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248 content.iterate(manifestRevs, true, new ManifestParser(inspector));
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249 }
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250
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251 //
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252 /**
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253 * Tells manifest revision number that corresponds to the given changeset. May return {@link HgRepository#BAD_REVISION}
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254 * if changeset has no associated manifest (cset records NULL nodeid for manifest).
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255 * @return manifest revision index, non-negative, or {@link HgRepository#BAD_REVISION}.
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256 * @throws HgInvalidRevisionException if method argument specifies non-existent revision index
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257 * @throws HgInvalidControlFileException if access to revlog index/data entry failed
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258 */
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259 /*package-local*/ int fromChangelog(int changesetRevisionIndex) throws HgInvalidRevisionException, HgInvalidControlFileException {
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260 if (HgInternals.wrongRevisionIndex(changesetRevisionIndex)) {
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261 throw new HgInvalidRevisionException(changesetRevisionIndex);
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262 }
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263 if (changesetRevisionIndex == HgRepository.WORKING_COPY || changesetRevisionIndex == HgRepository.BAD_REVISION) {
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264 throw new HgInvalidRevisionException("Can't use constants like WORKING_COPY or BAD_REVISION", null, changesetRevisionIndex);
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265 }
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266 // revisionNumber == TIP is processed by RevisionMapper
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267 if (revisionMap == null || content.shallDropDerivedCaches()) {
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268 content.detach(revisionMapCleaner);
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269 final boolean buildOwnLookup = super.revisionLookup == null;
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270 RevisionMapper rmap = new RevisionMapper(buildOwnLookup);
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271 content.iterate(0, TIP, false, rmap);
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272 rmap.fixReusedManifests();
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273 if (buildOwnLookup && super.useRevisionLookup) {
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274 // reuse RevisionLookup if there's none yet
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275 super.setRevisionLookup(rmap.manifestNodeids);
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276 }
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277 rmap.manifestNodeids = null;
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278 revisionMap = rmap;
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279 // although in most cases modified manifest is accessed through one of the methods in this class
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280 // and hence won't have a chance till this moment to be reloaded via revisionMapCleaner
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281 // (RevlogStream sends events on attempt to read revlog, and so far we haven't tried to read anything,
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282 // it's still reasonable to have this cleaner attached, just in case any method from Revlog base class
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283 // has been called (e.g. getLastRevision())
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284 content.attach(revisionMapCleaner);
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285 }
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286 return revisionMap.at(changesetRevisionIndex);
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287 }
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288
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289 /**
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290 * Extracts file revision as it was known at the time of given changeset.
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291 * <p>For more thorough details about file at specific changeset, use {@link HgChangesetFileSneaker}.
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292 * <p>To visit few changesets for the same file, use {@link #walkFileRevisions(Path, Inspector, int...)}
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293 *
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294 * @see #walkFileRevisions(Path, Inspector, int...)
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295 * @see HgChangesetFileSneaker
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296 * @param changelogRevisionIndex local changeset index
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297 * @param file path to file in question
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298 * @return file revision or <code>null</code> if manifest at specified revision doesn't list such file
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299 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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300 */
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301 public Nodeid getFileRevision(int changelogRevisionIndex, final Path file) throws HgInvalidRevisionException, HgInvalidControlFileException {
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302 // there's no need for HgDataFile to own this method, or get a delegate
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303 // as most of HgDataFile API is using file revision indexes, and there's easy step from file revision index to
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304 // both file revision and changeset revision index. But there's no easy way to go from changesetRevisionIndex to
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305 // file revision (the task this method solves), except for HgFileInformer
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306 // I feel methods dealing with changeset indexes shall be more exposed in HgChangelog and HgManifest API.
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307 // TODO need tests (e.g. pass TIP here to see resMap.get(-1) doesn't fail)
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308 int manifestRevIndex = fromChangelog(changelogRevisionIndex);
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309 if (manifestRevIndex == BAD_REVISION) {
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310 return null;
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311 }
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312 IntMap<Nodeid> resMap = new IntMap<Nodeid>(3);
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313 FileLookupInspector parser = new FileLookupInspector(encodingHelper, file, resMap, null);
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314 parser.walk(manifestRevIndex, content);
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315 assert resMap.size() <= 1; // size() == 0 if file wasn't found
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316 // can't use changelogRevisionIndex as key - it might have been TIP
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317 return resMap.size() == 0 ? null : resMap.get(resMap.firstKey());
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318 }
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319
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320 /**
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321 * Visit file revisions as they were recorded at the time of given changesets. Same file revision may be reported as many times as
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322 * there are changesets that refer to that revision. Both {@link Inspector#begin(int, Nodeid, int)} and {@link Inspector#end(int)}
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323 * with appropriate values are invoked around {@link Inspector#next(Nodeid, Path, Flags)} call for the supplied file
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324 *
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325 * <p>NOTE, this method doesn't respect return values from callback (i.e. to stop iteration), as it's lookup of a single file
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326 * and canceling it seems superfluous. However, this may change in future and it's recommended to return <code>true</code> from
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327 * all {@link Inspector} methods.
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328 *
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329 * @see #getFileRevision(int, Path)
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330 * @param file path of interest
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331 * @param inspector callback to receive details about selected file
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332 * @param changelogRevisionIndexes changeset indexes to visit
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333 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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334 */
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335 public void walkFileRevisions(Path file, Inspector inspector, int... changelogRevisionIndexes) throws HgRuntimeException {
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336 if (file == null || inspector == null || changelogRevisionIndexes == null) {
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337 throw new IllegalArgumentException();
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338 }
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339 // TODO [post-1.0] need tests. There's Main#checkWalkFileRevisions that may be a starting point
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340 int[] manifestRevIndexes = toManifestRevisionIndexes(changelogRevisionIndexes, null);
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341 FileLookupInspector parser = new FileLookupInspector(encodingHelper, file, inspector);
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342 parser.walk(manifestRevIndexes, content);
232
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343 }
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344
415
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345 /**
417
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346 * Extract file {@link Flags flags} as they were recorded in appropriate manifest version.
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347 *
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348 * @see HgDataFile#getFlags(int)
415
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349 * @param changesetRevIndex changeset revision index
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350 * @param file path to look up
417
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351 * @return one of predefined enum values, or <code>null</code> if file was not known in the specified revision
425
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352 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
415
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353 */
417
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354 public Flags getFileFlags(int changesetRevIndex, Path file) throws HgInvalidRevisionException, HgInvalidControlFileException {
415
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355 int manifestRevIdx = fromChangelog(changesetRevIndex);
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356 IntMap<Flags> resMap = new IntMap<Flags>(2);
426
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357 FileLookupInspector parser = new FileLookupInspector(encodingHelper, file, null, resMap);
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358 parser.walk(manifestRevIdx, content);
550
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359 assert resMap.size() <= 1; // size() == 0 if not found
547
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360 // can't use changesetRevIndex as key - it might have been TIP
550
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361 return resMap.size() == 0 ? null : resMap.get(resMap.firstKey());
415
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362 }
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363
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364
607
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365 /*package-local*/ void dropCachesOnChangelogChange() {
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366 // sort of a hack as it may happen that #fromChangelog()
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367 // is invoked for modified repository where revisionMap still points to an old state
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368 // Since there's no access to RevlogStream in #fromChangelog() if there's revisionMap
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369 // in place, there's no chance for RevlogStream to detect the change and to dispatch
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370 // change notification so that revisionMap got cleared.
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371 revisionMap = null;
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372 }
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373
390
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374 /**
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375 * @param changelogRevisionIndexes non-null
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376 * @param inspector may be null if reporting of missing manifests is not needed
403
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377 * @throws HgInvalidRevisionException if arguments specify non-existent revision index
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378 * @throws IllegalArgumentException if any index argument is not a revision index
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379 * @throws HgInvalidControlFileException if access to revlog index/data entry failed
390
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380 */
403
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381 private int[] toManifestRevisionIndexes(int[] changelogRevisionIndexes, Inspector inspector) throws HgInvalidRevisionException, HgInvalidControlFileException {
368
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382 int[] manifestRevs = new int[changelogRevisionIndexes.length];
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383 boolean needsSort = false;
390
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384 int j = 0;
367
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385 for (int i = 0; i < changelogRevisionIndexes.length; i++) {
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386 final int manifestRevisionIndex = fromChangelog(changelogRevisionIndexes[i]);
403
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387 if (manifestRevisionIndex == BAD_REVISION) {
390
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388 if (inspector != null) {
423
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389 inspector.begin(NO_REVISION, NULL, changelogRevisionIndexes[i]);
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390 inspector.end(NO_REVISION);
390
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391 }
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392 // othrwise, ignore changeset without manifest
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393 } else {
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394 manifestRevs[j] = manifestRevisionIndex;
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395 if (j > 0 && manifestRevs[j-1] > manifestRevisionIndex) {
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396 needsSort = true;
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397 }
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398 j++;
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399 }
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400 }
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401 if (needsSort) {
390
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402 Arrays.sort(manifestRevs, 0, j);
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403 }
390
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404 if (j == manifestRevs.length) {
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405 return manifestRevs;
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406 } else {
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407 int[] rv = new int[j];
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408 //Arrays.copyOfRange
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409 System.arraycopy(manifestRevs, 0, rv, 0, j);
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410 return rv;
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411 }
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412 }
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413
423
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414 @Callback
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415 public interface Inspector {
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416 /**
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417 * Denotes entering specific manifest revision, separate entries are
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418 * reported with subsequence {@link #next(Nodeid, Path, Flags)} calls.
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419 *
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420 * @param manifestRevisionIndex local revision index of the inspected revision
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421 * @param manifestRevision revision of the manifest we're about to iterate through
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422 * @param changelogRevisionIndex local revision index of changelog this manifest points to
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423 * @return <code>true</code> to continue iteration, <code>false</code> to stop
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424 */
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425 boolean begin(int manifestRevisionIndex, Nodeid manifestRevision, int changelogRevisionIndex);
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426
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427
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428 /**
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429 * Reports each manifest entry
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430 *
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431 * @param nid file revision
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432 * @param fname file name
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433 * @param flags one of {@link HgManifest.Flags} constants, not <code>null</code>
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
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434 * @return <code>true</code> to continue iteration, <code>false</code> to stop
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435 */
285
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436 boolean next(Nodeid nid, Path fname, Flags flags);
537
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437
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diff changeset
438 /**
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439 * Denotes leaving specific manifest revision, after all entries were reported using {@link #next(Nodeid, Path, Flags)}
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440 *
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441 * @param manifestRevisionIndex indicates manifest revision, corresponds to opening {@link #begin(int, Nodeid, int)}
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442 * @return <code>true</code> to continue iteration, <code>false</code> to stop
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443 */
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444 boolean end(int manifestRevisionIndex);
267
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445 }
424
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446
268
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447 /**
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448 * When Pool uses Strings directly,
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449 * ManifestParser creates new String instance with new char[] value, and does byte->char conversion.
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450 * For cpython repo, walk(0..10k), there are over 16 million filenames, of them only 3020 unique.
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451 * This means there are 15.9 million useless char[] instances and byte->char conversions
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452 *
285
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453 * When String (Path) is wrapped into {@link PathProxy}, there's extra overhead of byte[] representation
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454 * of the String, but these are only for unique Strings (Paths) (3020 in the example above). Besides, I save
268
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455 * useless char[] and byte->char conversions.
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456 */
571
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457 private final class PathProxy {
267
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458 private byte[] data;
268
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459 private int start;
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460 private final int hash, length;
285
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461 private Path result;
267
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462
571
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463 public PathProxy(byte[] data, int start, int length) {
267
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464 this.data = data;
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465 this.start = start;
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466 this.length = length;
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467
268
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468 // copy from String.hashCode(). In fact, not necessarily match result of String(data).hashCode
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469 // just need some nice algorithm here
267
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diff changeset
470 int h = 0;
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diff changeset
471 byte[] d = data;
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472 for (int i = 0, off = start, len = length; i < len; i++) {
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473 h = 31 * h + d[off++];
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474 }
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475 hash = h;
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476 }
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477
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diff changeset
478 @Override
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479 public boolean equals(Object obj) {
285
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480 if (false == obj instanceof PathProxy) {
267
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481 return false;
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482 }
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483 PathProxy o = (PathProxy) obj;
267
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diff changeset
484 if (o.result != null && result != null) {
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485 return result.equals(o.result);
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486 }
268
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487 if (o.length != length || o.hash != hash) {
267
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488 return false;
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489 }
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490 for (int i = 0, x = o.start, y = start; i < length; i++) {
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491 if (o.data[x++] != data[y++]) {
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492 return false;
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493 }
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494 }
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495 return true;
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496 }
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497 @Override
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498 public int hashCode() {
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499 return hash;
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500 }
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501
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502 public Path freeze() {
267
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503 if (result == null) {
574
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
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parents: 571
diff changeset
504 Path.Source pf = HgManifest.this.pathFactory;
88afffd39899 Improve memory consumption of HgManifest#getFileRevision(): avoid extra byte[] instances
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parents: 571
diff changeset
505 result = pf.path(HgManifest.this.encodingHelper.fromManifest(data, start, length));
268
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diff changeset
506 // release reference to bigger data array, make a copy of relevant part only
285
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diff changeset
507 // use original bytes, not those from String above to avoid cache misses due to different encodings
268
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diff changeset
508 byte[] d = new byte[length];
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diff changeset
509 System.arraycopy(data, start, d, 0, length);
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diff changeset
510 data = d;
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diff changeset
511 start = 0;
267
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512 }
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513 return result;
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514 }
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diff changeset
515 }
196
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diff changeset
516
571
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diff changeset
517 private class ManifestParser implements RevlogStream.Inspector, Lifecycle {
196
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diff changeset
518 private final Inspector inspector;
431
12f668401613 FIXMEs: awkward API refactored, what need to be internal got hidden; public aspects got captured in slim interfaces
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diff changeset
519 private IdentityPool<Nodeid> nodeidPool, thisRevPool;
12f668401613 FIXMEs: awkward API refactored, what need to be internal got hidden; public aspects got captured in slim interfaces
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diff changeset
520 private final IdentityPool<PathProxy> fnamePool;
266
0a2f445de774 Improve manifest parsing: reduce number of arrays instantiated for Nodeid
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parents: 264
diff changeset
521 private byte[] nodeidLookupBuffer = new byte[20]; // get reassigned each time new Nodeid is added to pool
312
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
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diff changeset
522 private final ProgressSupport progressHelper;
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parents: 304
diff changeset
523 private IterateControlMediator iterateControl;
262
3dcd3dd90c77 Improve manifest parsing: decode bytes to chars once, minimize arraycopy on String instantiation, keep set of file revisions from previous manifest only
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 257
diff changeset
524
571
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diff changeset
525 public ManifestParser(Inspector delegate) {
196
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diff changeset
526 assert delegate != null;
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diff changeset
527 inspector = delegate;
431
12f668401613 FIXMEs: awkward API refactored, what need to be internal got hidden; public aspects got captured in slim interfaces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 426
diff changeset
528 nodeidPool = new IdentityPool<Nodeid>();
12f668401613 FIXMEs: awkward API refactored, what need to be internal got hidden; public aspects got captured in slim interfaces
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parents: 426
diff changeset
529 fnamePool = new IdentityPool<PathProxy>();
12f668401613 FIXMEs: awkward API refactored, what need to be internal got hidden; public aspects got captured in slim interfaces
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parents: 426
diff changeset
530 thisRevPool = new IdentityPool<Nodeid>();
312
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diff changeset
531 progressHelper = ProgressSupport.Factory.get(delegate);
196
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diff changeset
532 }
268
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diff changeset
533
423
9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level
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parents: 421
diff changeset
534 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess da) {
196
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diff changeset
535 try {
312
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diff changeset
536 if (!inspector.begin(revisionNumber, new Nodeid(nodeid, true), linkRevision)) {
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
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parents: 304
diff changeset
537 iterateControl.stop();
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parents: 304
diff changeset
538 return;
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 304
diff changeset
539 }
372
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
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parents: 368
diff changeset
540 if (!da.isEmpty()) {
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
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parents: 368
diff changeset
541 // although unlikely, manifest entry may be empty, when all files have been deleted from the repository
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
542 Path fname = null;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
543 Flags flags = null;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
544 Nodeid nid = null;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
545 int i;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
546 byte[] data = da.byteArray();
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
547 for (i = 0; i < actualLen; i++) {
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
548 int x = i;
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 368
diff changeset
549 for( ; data[i] != '\n' && i < actualLen; i++) {
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
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parents: 368
diff changeset
550 if (fname == null && data[i] == 0) {
571
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parents: 550
diff changeset
551 PathProxy px = fnamePool.unify(new PathProxy(data, x, i - x));
372
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
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diff changeset
552 // if (cached = fnamePool.unify(px))== px then cacheMiss, else cacheHit
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diff changeset
553 // cpython 0..10k: hits: 15 989 152, misses: 3020
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diff changeset
554 fname = px.freeze();
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diff changeset
555 x = i+1;
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diff changeset
556 }
196
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diff changeset
557 }
372
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diff changeset
558 if (i < actualLen) {
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diff changeset
559 assert data[i] == '\n';
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diff changeset
560 int nodeidLen = i - x < 40 ? i-x : 40; // if > 40, there are flags
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diff changeset
561 DigestHelper.ascii2bin(data, x, nodeidLen, nodeidLookupBuffer); // ignore return value as it's unlikely to have NULL in manifest
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diff changeset
562 nid = new Nodeid(nodeidLookupBuffer, false); // this Nodeid is for pool lookup only, mock object
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diff changeset
563 Nodeid cached = nodeidPool.unify(nid);
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diff changeset
564 if (cached == nid) {
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
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diff changeset
565 // buffer now belongs to the cached nodeid
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
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diff changeset
566 nodeidLookupBuffer = new byte[20];
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parents: 368
diff changeset
567 } else {
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diff changeset
568 nid = cached; // use existing version, discard the lookup object
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parents: 368
diff changeset
569 } // for cpython 0..10k, cache hits are 15 973 301, vs 18871 misses.
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diff changeset
570 thisRevPool.record(nid); // memorize revision for the next iteration.
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diff changeset
571 if (nodeidLen + x < i) {
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diff changeset
572 // 'x' and 'l' for executable bits and symlinks?
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parents: 368
diff changeset
573 // hg --debug manifest shows 644 for each regular file in my repo
155c1893bda4 Issue 22: UnsupportedOperationException on empty manifest entry
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parents: 368
diff changeset
574 // for cpython 0..10k, there are 4361062 flag checks, and there's only 1 unique flag
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diff changeset
575 flags = Flags.parse(data, x + nodeidLen, i-x-nodeidLen);
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diff changeset
576 } else {
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
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diff changeset
577 flags = Flags.RegularFile;
372
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diff changeset
578 }
424
6437d261048a Deprecated code removed
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diff changeset
579 boolean good2go = inspector.next(nid, fname, flags);
372
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diff changeset
580 if (!good2go) {
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diff changeset
581 iterateControl.stop();
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diff changeset
582 return;
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diff changeset
583 }
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diff changeset
584 }
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diff changeset
585 nid = null;
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diff changeset
586 fname = null;
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diff changeset
587 flags = null;
196
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diff changeset
588 }
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diff changeset
589 }
312
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diff changeset
590 if (!inspector.end(revisionNumber)) {
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diff changeset
591 iterateControl.stop();
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diff changeset
592 return;
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diff changeset
593 }
262
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diff changeset
594 //
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diff changeset
595 // keep only actual file revisions, found at this version
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diff changeset
596 // (next manifest is likely to refer to most of them, although in specific cases
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diff changeset
597 // like commit in another branch a lot may be useless)
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diff changeset
598 nodeidPool.clear();
431
12f668401613 FIXMEs: awkward API refactored, what need to be internal got hidden; public aspects got captured in slim interfaces
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diff changeset
599 IdentityPool<Nodeid> t = nodeidPool;
262
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diff changeset
600 nodeidPool = thisRevPool;
264
6bb5e7ed051a Optimize memory usage (reduce number of objects instantiated) when pooling file names and nodeids during manifest parsing
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diff changeset
601 thisRevPool = t;
313
c1e3c18fd2f2 Test manifest cancellation
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diff changeset
602 iterateControl.checkCancelled();
312
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diff changeset
603 progressHelper.worked(1);
196
e2115da4cf6a Pool objects to avoid memory polution with duplicates
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diff changeset
604 } catch (IOException ex) {
423
9c9c442b5f2e Major refactoring of exception handling. Low-level API uses RuntimeExceptions, while checked are left for higher level
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parents: 421
diff changeset
605 throw new HgInvalidControlFileException("Failed reading manifest", ex, null).setRevisionIndex(revisionNumber);
196
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diff changeset
606 }
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diff changeset
607 }
312
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diff changeset
608
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diff changeset
609 public void start(int count, Callback callback, Object token) {
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
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diff changeset
610 CancelSupport cs = CancelSupport.Factory.get(inspector, null);
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diff changeset
611 iterateControl = new IterateControlMediator(cs, callback);
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diff changeset
612 progressHelper.start(count);
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diff changeset
613 }
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
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diff changeset
614
f9f3e9b67ccc Facilitate cancellation and progress reporting in changelog and manifest iterations
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diff changeset
615 public void finish(Object token) {
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diff changeset
616 progressHelper.done();
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diff changeset
617 }
196
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diff changeset
618 }
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
619
600
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
620 private class RevisionMapper implements RevlogStream.Inspector, Lifecycle {
218
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diff changeset
621
403
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diff changeset
622 private final int changelogRevisionCount;
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
623 private int[] changelog2manifest;
600
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diff changeset
624 RevisionLookup manifestNodeids;
218
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diff changeset
625
600
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diff changeset
626 private RevisionMapper(boolean useOwnRevisionLookup) {
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
627 changelogRevisionCount = HgManifest.this.getRepo().getChangelog().getRevisionCount();
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
628 if (useOwnRevisionLookup) {
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
629 manifestNodeids = new RevisionLookup(HgManifest.this.content);
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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diff changeset
630 }
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
631 }
600
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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diff changeset
632
403
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diff changeset
633 /**
2747b0723867 FIXMEs: work on exceptions and javadoc
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diff changeset
634 * Get index of manifest revision that corresponds to specified changeset
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diff changeset
635 * @param changesetRevisionIndex non-negative index of changelog revision, or {@link HgRepository#TIP}
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diff changeset
636 * @return index of manifest revision, or {@link HgRepository#BAD_REVISION} if changeset doesn't reference a valid manifest
2747b0723867 FIXMEs: work on exceptions and javadoc
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parents: 390
diff changeset
637 * @throws HgInvalidRevisionException if method argument specifies non-existent revision index
2747b0723867 FIXMEs: work on exceptions and javadoc
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parents: 390
diff changeset
638 */
2747b0723867 FIXMEs: work on exceptions and javadoc
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diff changeset
639 public int at(int changesetRevisionIndex) throws HgInvalidRevisionException {
2747b0723867 FIXMEs: work on exceptions and javadoc
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parents: 390
diff changeset
640 if (changesetRevisionIndex == TIP) {
2747b0723867 FIXMEs: work on exceptions and javadoc
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diff changeset
641 changesetRevisionIndex = changelogRevisionCount - 1;
2747b0723867 FIXMEs: work on exceptions and javadoc
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diff changeset
642 }
2747b0723867 FIXMEs: work on exceptions and javadoc
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diff changeset
643 if (changesetRevisionIndex >= changelogRevisionCount) {
2747b0723867 FIXMEs: work on exceptions and javadoc
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diff changeset
644 throw new HgInvalidRevisionException(changesetRevisionIndex);
257
f39fb6b3cc76 Handle revision constants correctly
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diff changeset
645 }
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
646 if (changelog2manifest != null) {
403
2747b0723867 FIXMEs: work on exceptions and javadoc
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diff changeset
647 return changelog2manifest[changesetRevisionIndex];
218
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diff changeset
648 }
403
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diff changeset
649 return changesetRevisionIndex;
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
650 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
651
600
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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diff changeset
652 // XXX can be replaced with Revlog.RevisionInspector, but I don't want Nodeid instances
218
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diff changeset
653 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess data) {
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
654 if (changelog2manifest != null) {
220
8de327242aa0 Basic information about branches
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diff changeset
655 // next assertion is not an error, rather assumption check, which is too development-related to be explicit exception -
8de327242aa0 Basic information about branches
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diff changeset
656 // I just wonder if there are manifests that have two entries pointing to single changeset. It seems unrealistic, though -
8de327242aa0 Basic information about branches
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diff changeset
657 // changeset records one and only one manifest nodeid
403
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diff changeset
658 assert changelog2manifest[linkRevision] == BAD_REVISION : String.format("revision:%d, link:%d, already linked to revision:%d", revisionNumber, linkRevision, changelog2manifest[linkRevision]);
218
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diff changeset
659 changelog2manifest[linkRevision] = revisionNumber;
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
660 } else {
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
661 if (revisionNumber != linkRevision) {
403
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diff changeset
662 changelog2manifest = new int[changelogRevisionCount];
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diff changeset
663 Arrays.fill(changelog2manifest, BAD_REVISION);
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
664 for (int i = 0; i < revisionNumber; changelog2manifest[i] = i, i++)
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
665 ;
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
666 changelog2manifest[linkRevision] = revisionNumber;
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
667 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
668 }
600
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
669 if (manifestNodeids != null) {
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
670 manifestNodeids.next(revisionNumber, nodeid);
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
671 }
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
672 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
673
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
674 public void start(int count, Callback callback, Object token) {
403
2747b0723867 FIXMEs: work on exceptions and javadoc
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parents: 390
diff changeset
675 if (count != changelogRevisionCount) {
2747b0723867 FIXMEs: work on exceptions and javadoc
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parents: 390
diff changeset
676 assert count < changelogRevisionCount; // no idea what to do if manifest has more revisions than changelog
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
677 // the way how manifest may contain more revisions than changelog, as I can imagine, is a result of
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
678 // some kind of an import tool (e.g. from SVN or CVS), that creates manifest and changelog independently.
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
679 // Note, it's pure guess, I didn't see such repository yet (although the way manifest revisions
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diff changeset
680 // in cpython repo are numbered makes me think aforementioned way)
403
2747b0723867 FIXMEs: work on exceptions and javadoc
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parents: 390
diff changeset
681 changelog2manifest = new int[changelogRevisionCount];
2747b0723867 FIXMEs: work on exceptions and javadoc
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parents: 390
diff changeset
682 Arrays.fill(changelog2manifest, BAD_REVISION);
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
683 }
600
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
684 if (manifestNodeids != null) {
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
685 manifestNodeids.prepare(count);
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
686 }
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
687 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 196
diff changeset
688
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
689 public void finish(Object token) {
600
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
690 // it's not a nice idea to fix changesets that reuse existing manifest entries from inside
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
691 // #finish, as the manifest read operation is not complete at the moment.
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
692 }
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
693
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
694 public void fixReusedManifests() {
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
695 if (changelog2manifest == null) {
600
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
696 // direct, 1-1 mapping of changeset indexes to manifest
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
697 return;
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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parents: 196
diff changeset
698 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 196
diff changeset
699 // I assume there'd be not too many revisions we don't know manifest of
597
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
700 IntVector undefinedChangelogRevision = new IntVector();
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
701 for (int i = 0; i < changelog2manifest.length; i++) {
403
2747b0723867 FIXMEs: work on exceptions and javadoc
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 390
diff changeset
702 if (changelog2manifest[i] == BAD_REVISION) {
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
703 undefinedChangelogRevision.add(i);
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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parents: 196
diff changeset
704 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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parents: 196
diff changeset
705 }
597
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
706 if (undefinedChangelogRevision.size() > 0) {
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
707 final IntMap<Nodeid> missingCsetToManifest = new IntMap<Nodeid>(undefinedChangelogRevision.size());
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
708 int[] undefinedClogRevs = undefinedChangelogRevision.toArray();
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
709 // undefinedChangelogRevision is sorted by the nature it's created
600
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
710 HgManifest.this.getRepo().getChangelog().rangeInternal(new HgChangelog.Inspector() {
597
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
711
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
712 public void next(int revisionIndex, Nodeid nodeid, RawChangeset cset) {
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
713 missingCsetToManifest.put(revisionIndex, cset.manifest());
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
714 }
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
715 }, undefinedClogRevs);
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
716 assert missingCsetToManifest.size() == undefinedChangelogRevision.size();
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
717 for (int u : undefinedClogRevs) {
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
718 Nodeid manifest = missingCsetToManifest.get(u);
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
719 if (manifest == null || manifest.isNull()) {
600
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
720 HgManifest.this.getRepo().getSessionContext().getLog().dump(getClass(), Severity.Warn, "Changeset %d has no associated manifest entry", u);
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
721 // keep BAD_REVISION in the changelog2manifest map.
598
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 597
diff changeset
722 continue;
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 597
diff changeset
723 }
600
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
724 if (manifestNodeids != null) {
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
725 int manifestRevIndex = manifestNodeids.findIndex(manifest);
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
726 // mimic HgManifest#getRevisionIndex() to keep behavior the same
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
727 if (manifestRevIndex == BAD_REVISION) {
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
728 throw new HgInvalidRevisionException(String.format("Can't find index of revision %s", manifest.shortNotation()), manifest, null);
598
d29d9dc6c128 Utilize the fact nodeids are very different and are read anyway to speed up reverse lookup
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 597
diff changeset
729 }
600
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
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parents: 598
diff changeset
730 changelog2manifest[u] = manifestRevIndex;
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
731 } else {
46f29b73e51e Utilize RevisionLookup to speed-up getRevisionIndex of both manifest and changelog
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 598
diff changeset
732 changelog2manifest[u] = HgManifest.this.getRevisionIndex(manifest);
597
c895b5556937 Wrap manifest revision map completion into single file access
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 583
diff changeset
733 }
354
5f9073eabf06 Propagate errors with exceptions up to a end client
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 326
diff changeset
734 }
218
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
735 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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parents: 196
diff changeset
736 }
047b1dec7a04 Issue 7: Correctly handle manifest and changelog with different number of (or non-matching) revisions
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diff changeset
737 }
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
738
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
739 /**
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
740 * Look up specified file in possibly multiple manifest revisions, collect file revision and flags.
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
741 */
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
742 private static class FileLookupInspector implements RevlogStream.Inspector {
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
743
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
744 private final Path filename;
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
745 private final byte[] filenameAsBytes;
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
746 private final IntMap<Nodeid> csetIndex2FileRev;
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
747 private final IntMap<Flags> csetIndex2Flags;
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
748 private final Inspector delegate;
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
749
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
750 public FileLookupInspector(EncodingHelper eh, Path fileToLookUp, IntMap<Nodeid> csetIndex2FileRevMap, IntMap<Flags> csetIndex2FlagsMap) {
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
751 assert fileToLookUp != null;
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
752 // need at least one map for the inspector to make any sense
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
753 assert csetIndex2FileRevMap != null || csetIndex2FlagsMap != null;
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
754 filename = fileToLookUp;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
755 filenameAsBytes = eh.toManifest(fileToLookUp.toString());
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
756 delegate = null;
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
757 csetIndex2FileRev = csetIndex2FileRevMap;
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
758 csetIndex2Flags = csetIndex2FlagsMap;
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
759 }
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
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parents: 425
diff changeset
760
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
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parents: 425
diff changeset
761 public FileLookupInspector(EncodingHelper eh, Path fileToLookUp, Inspector delegateInspector) {
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
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parents: 425
diff changeset
762 assert fileToLookUp != null;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
763 assert delegateInspector != null;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
764 filename = fileToLookUp;
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
765 filenameAsBytes = eh.toManifest(fileToLookUp.toString());
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
766 delegate = delegateInspector;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
767 csetIndex2FileRev = null;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
768 csetIndex2Flags = null;
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
769 }
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
770
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
771 void walk(int manifestRevIndex, RevlogStream content) {
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
772 content.iterate(manifestRevIndex, manifestRevIndex, true, this);
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
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parents: 425
diff changeset
773 }
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
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parents: 425
diff changeset
774
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
775 void walk(int[] manifestRevIndexes, RevlogStream content) {
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 425
diff changeset
776 content.iterate(manifestRevIndexes, true, this);
415
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
777 }
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 414
diff changeset
778
423
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779 public void next(int revisionNumber, int actualLen, int baseRevision, int linkRevision, int parent1Revision, int parent2Revision, byte[] nodeid, DataAccess data) {
574
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780 ByteVector byteVector = new ByteVector(256, 128); // allocate for long paths right away
415
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781 try {
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782 byte b;
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783 while (!data.isEmpty() && (b = data.readByte()) != '\n') {
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784 if (b != 0) {
574
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785 byteVector.add(b);
415
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786 } else {
574
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787 if (byteVector.equalsTo(filenameAsBytes)) {
426
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
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788 Nodeid fileRev = null;
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789 Flags flags = null;
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790 if (csetIndex2FileRev != null || delegate != null) {
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791 byte[] nid = new byte[40];
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792 data.readBytes(nid, 0, 40);
426
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793 fileRev = Nodeid.fromAscii(nid, 0, 40);
415
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794 } else {
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795 data.skip(40);
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796 }
426
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797 if (csetIndex2Flags != null || delegate != null) {
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798 byteVector.clear();
415
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799 while (!data.isEmpty() && (b = data.readByte()) != '\n') {
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800 byteVector.add(b);
415
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801 }
574
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802 if (byteVector.size() == 0) {
415
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803 flags = Flags.RegularFile;
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804 } else {
574
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805 flags = Flags.parse(byteVector.toByteArray(), 0, byteVector.size());
415
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806 }
426
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807 }
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808 if (delegate != null) {
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809 assert flags != null;
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810 assert fileRev != null;
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811 delegate.begin(revisionNumber, Nodeid.fromBinary(nodeid, 0), linkRevision);
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812 delegate.next(fileRev, filename, flags);
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813 delegate.end(revisionNumber);
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diff changeset
814
063b0663495a HgManifest#getFileRevisions refactored into #walkFileRevisions to match pattern throught rest of the library
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diff changeset
815 } else {
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816 if (csetIndex2FileRev != null) {
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817 csetIndex2FileRev.put(linkRevision, fileRev);
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818 }
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diff changeset
819 if (csetIndex2Flags != null) {
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diff changeset
820 csetIndex2Flags.put(linkRevision, flags);
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diff changeset
821 }
415
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822 }
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823 break;
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824 } else {
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diff changeset
825 data.skip(40);
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diff changeset
826 }
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827 // else skip to the end of line
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diff changeset
828 while (!data.isEmpty() && (b = data.readByte()) != '\n')
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diff changeset
829 ;
574
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diff changeset
830
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diff changeset
831 byteVector.clear();
415
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diff changeset
832 }
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
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833 }
ee8264d80747 Explicit constant for regular file flags, access to flags for a given file revision
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diff changeset
834 } catch (IOException ex) {
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diff changeset
835 throw new HgInvalidControlFileException("Failed reading manifest", ex, null);
415
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diff changeset
836 }
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diff changeset
837 }
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diff changeset
838 }
2
08db726a0fb7 Shaping out low-level Hg structures
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parents:
diff changeset
839 }