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annotate src/org/tmatesoft/hg/repo/HgBundle.java @ 667:fba85bc1dfb8

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Refactoring: move all encoding/decoding operations into single place, EncodingHelper
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 11 Jul 2013 17:54:08 +0200
parents 46b56864b483
children 545b1d4cc11d
rev   line source
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1 /*
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2 * Copyright (c) 2011-2013 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.repo;
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18
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19 import java.io.File;
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20 import java.io.FileInputStream;
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21 import java.io.IOException;
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22 import java.util.ConcurrentModificationException;
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23
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24 import org.tmatesoft.hg.core.HgIOException;
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25 import org.tmatesoft.hg.core.Nodeid;
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26 import org.tmatesoft.hg.core.SessionContext;
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27 import org.tmatesoft.hg.internal.ByteArrayChannel;
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28 import org.tmatesoft.hg.internal.ByteArrayDataAccess;
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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.DataAccessProvider;
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32 import org.tmatesoft.hg.internal.DataSerializer;
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33 import org.tmatesoft.hg.internal.DigestHelper;
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34 import org.tmatesoft.hg.internal.EncodingHelper;
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35 import org.tmatesoft.hg.internal.Experimental;
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36 import org.tmatesoft.hg.internal.FileUtils;
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37 import org.tmatesoft.hg.internal.InflaterDataAccess;
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38 import org.tmatesoft.hg.internal.Internals;
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39 import org.tmatesoft.hg.internal.Lifecycle;
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40 import org.tmatesoft.hg.internal.Patch;
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41 import org.tmatesoft.hg.repo.HgChangelog.ChangesetParser;
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42 import org.tmatesoft.hg.repo.HgChangelog.RawChangeset;
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43 import org.tmatesoft.hg.util.Adaptable;
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44 import org.tmatesoft.hg.util.CancelledException;
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45
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46 /**
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47 * WORK IN PROGRESS
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48 *
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49 * @see http://mercurial.selenic.com/wiki/BundleFormat
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50 *
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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 @Experimental(reason="API is not stable")
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55 public class HgBundle {
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56
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57 private final File bundleFile;
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58 private final DataAccessProvider accessProvider;
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59 private final SessionContext ctx;
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60 private final EncodingHelper fnDecorer;
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61 private Lifecycle.BasicCallback flowControl;
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62
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63 HgBundle(SessionContext sessionContext, DataAccessProvider dap, File bundle) {
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64 ctx = sessionContext;
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65 accessProvider = dap;
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66 bundleFile = bundle;
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67 fnDecorer = Internals.buildFileNameEncodingHelper(new SessionContext.SourcePrim(ctx));
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68 }
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69
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70 private DataAccess getDataStream() throws IOException {
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71 DataAccess da = accessProvider.createReader(bundleFile, false);
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72 byte[] signature = new byte[6];
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73 if (da.length() > 6) {
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74 da.readBytes(signature, 0, 6);
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75 if (signature[0] == 'H' && signature[1] == 'G' && signature[2] == '1' && signature[3] == '0') {
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76 if (signature[4] == 'G' && signature[5] == 'Z') {
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77 return new InflaterDataAccess(da, 6, da.length() - 6);
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78 }
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79 if (signature[4] == 'B' && signature[5] == 'Z') {
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80 throw Internals.notImplemented();
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81 }
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82 if (signature[4] != 'U' || signature[5] != 'N') {
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83 throw new HgInvalidStateException(String.format("Bad bundle signature: %s", String.valueOf(signature)));
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84 }
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85 // "...UN", fall-through
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86 } else {
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87 da.reset();
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88 }
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89 }
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90 return da;
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91 }
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92
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93 private int uses = 0;
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94 public HgBundle link() {
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95 uses++;
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96 return this;
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97 }
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98 public void unlink() {
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99 uses--;
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100 if (uses == 0 && bundleFile != null) {
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101 bundleFile.deleteOnExit();
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102 }
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103 }
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104 public boolean inUse() {
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105 return uses > 0;
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106 }
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107
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108 /**
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109 * Get changes recorded in the bundle that are missing from the supplied repository.
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110 * @param hgRepo repository that shall possess base revision for this bundle
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111 * @param inspector callback to get each changeset found
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112 */
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113 public void changes(final HgRepository hgRepo, final HgChangelog.Inspector inspector) throws HgRuntimeException {
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114 Inspector bundleInsp = new Inspector() {
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115 DigestHelper dh = new DigestHelper();
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116 boolean emptyChangelog = true;
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117 private DataAccess prevRevContent;
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118 private int revisionIndex;
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119 private ChangesetParser csetBuilder;
169
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120
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121 public void changelogStart() {
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122 emptyChangelog = true;
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123 revisionIndex = 0;
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124 csetBuilder = new ChangesetParser(hgRepo, true);
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125 }
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126
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127 public void changelogEnd() {
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128 if (emptyChangelog) {
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129 throw new IllegalStateException("No changelog group in the bundle"); // XXX perhaps, just be silent and/or log?
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130 }
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131 }
169
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132
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133 /*
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134 * Despite that BundleFormat wiki says: "Each Changelog entry patches the result of all previous patches
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135 * (the previous, or parent patch of a given patch p is the patch that has a node equal to p's p1 field)",
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136 * it seems not to hold true. Instead, each entry patches previous one, regardless of whether the one
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137 * before is its parent (i.e. ge.firstParent()) or not.
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138 *
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139 Actual state in the changelog.i
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140 Index Offset Flags Packed Actual Base Rev Link Rev Parent1 Parent2 nodeid
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141 50: 9212 0 209 329 48 50 49 -1 f1db8610da62a3e0beb8d360556ee1fd6eb9885e
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142 51: 9421 0 278 688 48 51 50 -1 9429c7bd1920fab164a9d2b621d38d57bcb49ae0
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143 52: 9699 0 154 179 52 52 50 -1 30bd389788464287cee22ccff54c330a4b715de5
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144 53: 9853 0 133 204 52 53 51 52 a6f39e595b2b54f56304470269a936ead77f5725
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145 54: 9986 0 156 182 54 54 52 -1 fd4f2c98995beb051070630c272a9be87bef617d
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146
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147 Excerpt from bundle (nodeid, p1, p2, cs):
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148 f1db8610da62a3e0beb8d360556ee1fd6eb9885e 26e3eeaa39623de552b45ee1f55c14f36460f220 0000000000000000000000000000000000000000 f1db8610da62a3e0beb8d360556ee1fd6eb9885e; patches:4
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149 9429c7bd1920fab164a9d2b621d38d57bcb49ae0 f1db8610da62a3e0beb8d360556ee1fd6eb9885e 0000000000000000000000000000000000000000 9429c7bd1920fab164a9d2b621d38d57bcb49ae0; patches:3
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150 > 30bd389788464287cee22ccff54c330a4b715de5 f1db8610da62a3e0beb8d360556ee1fd6eb9885e 0000000000000000000000000000000000000000 30bd389788464287cee22ccff54c330a4b715de5; patches:3
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151 a6f39e595b2b54f56304470269a936ead77f5725 9429c7bd1920fab164a9d2b621d38d57bcb49ae0 30bd389788464287cee22ccff54c330a4b715de5 a6f39e595b2b54f56304470269a936ead77f5725; patches:3
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152 fd4f2c98995beb051070630c272a9be87bef617d 30bd389788464287cee22ccff54c330a4b715de5 0000000000000000000000000000000000000000 fd4f2c98995beb051070630c272a9be87bef617d; patches:3
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153
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154 To recreate 30bd..e5, one have to take content of 9429..e0, not its p1 f1db..5e
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155 */
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156 public boolean element(GroupElement ge) throws HgRuntimeException {
169
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157 emptyChangelog = false;
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158 HgChangelog changelog = hgRepo.getChangelog();
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159 try {
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160 if (prevRevContent == null) {
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161 if (ge.firstParent().isNull() && ge.secondParent().isNull()) {
169
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162 prevRevContent = new ByteArrayDataAccess(new byte[0]);
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163 } else {
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164 final Nodeid base = ge.firstParent();
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165 if (!changelog.isKnown(base) /*only first parent, that's Bundle contract*/) {
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166 throw new IllegalStateException(String.format("Revision %s needs a parent %s, which is missing in the supplied repo %s", ge.node().shortNotation(), base.shortNotation(), hgRepo.toString()));
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167 }
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168 ByteArrayChannel bac = new ByteArrayChannel();
418
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169 changelog.rawContent(base, bac); // TODO post-1.0 get DataAccess directly, to avoid
169
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170 // extra byte[] (inside ByteArrayChannel) duplication just for the sake of subsequent ByteArrayDataChannel wrap.
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171 prevRevContent = new ByteArrayDataAccess(bac.toArray());
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172 }
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173 }
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174 //
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175 byte[] csetContent = ge.apply(prevRevContent);
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176 dh = dh.sha1(ge.firstParent(), ge.secondParent(), csetContent); // XXX ge may give me access to byte[] content of nodeid directly, perhaps, I don't need DH to be friend of Nodeid?
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177 if (!ge.node().equalsTo(dh.asBinary())) {
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178 throw new HgInvalidStateException(String.format("Integrity check failed on %s, node: %s", bundleFile, ge.node().shortNotation()));
169
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179 }
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180 ByteArrayDataAccess csetDataAccess = new ByteArrayDataAccess(csetContent);
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181 RawChangeset cs = csetBuilder.parse(csetDataAccess);
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182 inspector.next(revisionIndex++, ge.node(), cs);
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183 prevRevContent.done();
169
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184 prevRevContent = csetDataAccess.reset();
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185 } catch (CancelledException ex) {
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186 return false;
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187 } catch (IOException ex) {
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188 throw new HgInvalidFileException("Invalid bundle file", ex, bundleFile); // TODO post-1.0 revisit exception handling
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189 } catch (HgInvalidDataFormatException ex) {
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190 throw new HgInvalidControlFileException("Invalid bundle file", ex, bundleFile);
169
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191 }
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192 return true;
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193 }
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194
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195 public void manifestStart() {}
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196 public void manifestEnd() {}
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197 public void fileStart(String name) {}
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198 public void fileEnd(String name) {}
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199
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200 };
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201 inspectChangelog(bundleInsp);
169
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202 }
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203
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204 // callback to minimize amount of Strings and Nodeids instantiated
512
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205 @Callback
169
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206 public interface Inspector {
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207 void changelogStart() throws HgRuntimeException;
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208
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209 void changelogEnd() throws HgRuntimeException;
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210
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211 void manifestStart() throws HgRuntimeException;
169
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212
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213 void manifestEnd() throws HgRuntimeException;
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214
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215 void fileStart(String name) throws HgRuntimeException;
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216
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217 void fileEnd(String name) throws HgRuntimeException;
169
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218
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219 /**
170
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220 * XXX desperately need exceptions here
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221 * @param element data element, instance might be reused, don't keep a reference to it or its raw data
169
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222 * @return <code>true</code> to continue
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223 */
628
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224 boolean element(GroupElement element) throws HgRuntimeException;
169
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225 }
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226
423
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227 /**
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228 * @param inspector callback to visit changelog entries
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229 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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230 * @throws IllegalArgumentException if inspector argument is null
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231 */
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232 public void inspectChangelog(Inspector inspector) throws HgRuntimeException {
169
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233 if (inspector == null) {
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234 throw new IllegalArgumentException();
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235 }
512
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236 final Lifecycle lifecycle = lifecycleSetUp(inspector);
295
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237 DataAccess da = null;
169
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238 try {
295
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239 da = getDataStream();
182
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240 internalInspectChangelog(da, inspector);
295
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241 } catch (IOException ex) {
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242 throw new HgInvalidFileException("Bundle.inspectChangelog failed", ex, bundleFile);
37
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243 } finally {
295
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244 if (da != null) {
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245 da.done();
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246 }
512
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247 lifecycleTearDown(lifecycle);
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248 }
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249 }
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250
423
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251 /**
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252 * @param inspector callback to visit manifest entries
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253 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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254 * @throws IllegalArgumentException if inspector argument is null
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255 */
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256 public void inspectManifest(Inspector inspector) throws HgRuntimeException {
169
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257 if (inspector == null) {
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258 throw new IllegalArgumentException();
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259 }
512
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260 final Lifecycle lifecycle = lifecycleSetUp(inspector);
295
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261 DataAccess da = null;
36
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262 try {
295
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263 da = getDataStream();
169
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264 if (da.isEmpty()) {
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265 return;
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266 }
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267 skipGroup(da); // changelog
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268 internalInspectManifest(da, inspector);
295
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269 } catch (IOException ex) {
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270 throw new HgInvalidFileException("Bundle.inspectManifest failed", ex, bundleFile);
36
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271 } finally {
295
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272 if (da != null) {
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273 da.done();
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274 }
512
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275 lifecycleTearDown(lifecycle);
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276 }
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277 }
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278
423
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279 /**
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280 * @param inspector callback to visit file entries
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281 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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282 * @throws IllegalArgumentException if inspector argument is null
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283 */
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284 public void inspectFiles(Inspector inspector) throws HgRuntimeException {
169
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285 if (inspector == null) {
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286 throw new IllegalArgumentException();
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287 }
512
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288 final Lifecycle lifecycle = lifecycleSetUp(inspector);
295
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289 DataAccess da = null;
169
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290 try {
295
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291 da = getDataStream();
182
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292 if (da.isEmpty()) {
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293 return;
169
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294 }
182
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295 skipGroup(da); // changelog
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296 if (da.isEmpty()) {
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297 return;
169
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298 }
182
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299 skipGroup(da); // manifest
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300 internalInspectFiles(da, inspector);
295
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301 } catch (IOException ex) {
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302 throw new HgInvalidFileException("Bundle.inspectFiles failed", ex, bundleFile);
169
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303 } finally {
295
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304 if (da != null) {
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305 da.done();
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diff changeset
306 }
512
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diff changeset
307 lifecycleTearDown(lifecycle);
169
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308 }
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309 }
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310
423
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311 /**
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diff changeset
312 * @param inspector visit complete bundle (changelog, manifest and file entries)
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313 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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314 * @throws IllegalArgumentException if inspector argument is null
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315 */
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diff changeset
316 public void inspectAll(Inspector inspector) throws HgRuntimeException {
169
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diff changeset
317 if (inspector == null) {
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318 throw new IllegalArgumentException();
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diff changeset
319 }
512
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320 final Lifecycle lifecycle = lifecycleSetUp(inspector);
295
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321 DataAccess da = null;
169
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322 try {
295
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diff changeset
323 da = getDataStream();
182
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diff changeset
324 internalInspectChangelog(da, inspector);
513
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diff changeset
325 if (flowControl.isStopped()) {
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diff changeset
326 return;
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diff changeset
327 }
182
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diff changeset
328 internalInspectManifest(da, inspector);
513
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diff changeset
329 if (flowControl.isStopped()) {
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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diff changeset
330 return;
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diff changeset
331 }
182
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diff changeset
332 internalInspectFiles(da, inspector);
295
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333 } catch (IOException ex) {
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diff changeset
334 throw new HgInvalidFileException("Bundle.inspectAll failed", ex, bundleFile);
169
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diff changeset
335 } finally {
295
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diff changeset
336 if (da != null) {
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diff changeset
337 da.done();
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diff changeset
338 }
512
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
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diff changeset
339 lifecycleTearDown(lifecycle);
169
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340 }
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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diff changeset
341 }
512
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
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342
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343 // initialize flowControl, check for concurrent usage, starts lifecyle, if any
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diff changeset
344 // return non-null only if inspector is interested in lifecycle events
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diff changeset
345 private Lifecycle lifecycleSetUp(Inspector inspector) throws ConcurrentModificationException {
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diff changeset
346 // Don't need flowControl in case Inspector doesn't implement Lifecycle,
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diff changeset
347 // however is handy not to expect it == null inside internalInspect*
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diff changeset
348 // XXX Once there's need to make this class thread-safe,
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diff changeset
349 // shall move flowControl to thread-local state.
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diff changeset
350 if (flowControl != null) {
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diff changeset
351 throw new ConcurrentModificationException("HgBundle is in use and not thread-safe yet");
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
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352 }
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
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diff changeset
353 flowControl = new Lifecycle.BasicCallback();
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diff changeset
354 final Lifecycle lifecycle = Adaptable.Factory.getAdapter(inspector, Lifecycle.class, null);
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
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diff changeset
355 if (lifecycle != null) {
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diff changeset
356 lifecycle.start(-1, flowControl, flowControl);
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diff changeset
357 }
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358 return lifecycle;
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diff changeset
359 }
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diff changeset
360
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361 private void lifecycleTearDown(Lifecycle lifecycle) {
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diff changeset
362 if (lifecycle != null) {
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diff changeset
363 lifecycle.finish(flowControl);
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diff changeset
364 }
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diff changeset
365 flowControl = null;
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diff changeset
366 }
169
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diff changeset
367
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6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
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368 private void internalInspectChangelog(DataAccess da, Inspector inspector) throws IOException, HgRuntimeException {
182
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369 if (da.isEmpty()) {
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370 return;
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371 }
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diff changeset
372 inspector.changelogStart();
513
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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diff changeset
373 if (flowControl.isStopped()) {
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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diff changeset
374 return;
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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375 }
182
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diff changeset
376 readGroup(da, inspector);
513
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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diff changeset
377 if (flowControl.isStopped()) {
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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diff changeset
378 return;
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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diff changeset
379 }
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diff changeset
380 inspector.changelogEnd();
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381 }
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382
628
6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
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diff changeset
383 private void internalInspectManifest(DataAccess da, Inspector inspector) throws IOException, HgRuntimeException {
182
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diff changeset
384 if (da.isEmpty()) {
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385 return;
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386 }
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diff changeset
387 inspector.manifestStart();
513
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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diff changeset
388 if (flowControl.isStopped()) {
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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diff changeset
389 return;
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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diff changeset
390 }
182
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diff changeset
391 readGroup(da, inspector);
513
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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diff changeset
392 if (flowControl.isStopped()) {
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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diff changeset
393 return;
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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diff changeset
394 }
182
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diff changeset
395 inspector.manifestEnd();
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diff changeset
396 }
f26ffe04ced0 Refactor HgBundle to dispatch changes found through callback
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diff changeset
397
628
6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
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diff changeset
398 private void internalInspectFiles(DataAccess da, Inspector inspector) throws IOException, HgRuntimeException {
182
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diff changeset
399 while (!da.isEmpty()) {
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diff changeset
400 int fnameLen = da.readInt();
f26ffe04ced0 Refactor HgBundle to dispatch changes found through callback
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diff changeset
401 if (fnameLen <= 4) {
f26ffe04ced0 Refactor HgBundle to dispatch changes found through callback
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diff changeset
402 break; // null chunk, the last one.
f26ffe04ced0 Refactor HgBundle to dispatch changes found through callback
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parents: 170
diff changeset
403 }
f26ffe04ced0 Refactor HgBundle to dispatch changes found through callback
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
404 byte[] fnameBuf = new byte[fnameLen - 4];
f26ffe04ced0 Refactor HgBundle to dispatch changes found through callback
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parents: 170
diff changeset
405 da.readBytes(fnameBuf, 0, fnameBuf.length);
667
fba85bc1dfb8 Refactoring: move all encoding/decoding operations into single place, EncodingHelper
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 663
diff changeset
406 String name = fnDecorer.fromBundle(fnameBuf, 0, fnameBuf.length);
182
f26ffe04ced0 Refactor HgBundle to dispatch changes found through callback
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diff changeset
407 inspector.fileStart(name);
513
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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parents: 512
diff changeset
408 if (flowControl.isStopped()) {
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 512
diff changeset
409 return;
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 512
diff changeset
410 }
182
f26ffe04ced0 Refactor HgBundle to dispatch changes found through callback
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parents: 170
diff changeset
411 readGroup(da, inspector);
513
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 512
diff changeset
412 if (flowControl.isStopped()) {
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 512
diff changeset
413 return;
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 512
diff changeset
414 }
182
f26ffe04ced0 Refactor HgBundle to dispatch changes found through callback
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parents: 170
diff changeset
415 inspector.fileEnd(name);
f26ffe04ced0 Refactor HgBundle to dispatch changes found through callback
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parents: 170
diff changeset
416 }
f26ffe04ced0 Refactor HgBundle to dispatch changes found through callback
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parents: 170
diff changeset
417 }
f26ffe04ced0 Refactor HgBundle to dispatch changes found through callback
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parents: 170
diff changeset
418
628
6526d8adbc0f Explicit HgRuntimeException to facilitate easy switch from runtime to checked exceptions
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parents: 606
diff changeset
419 private static void readGroup(DataAccess da, Inspector inspector) throws IOException, HgRuntimeException {
36
205f9b59b400 Strip parsing logic out from console frontend
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parents:
diff changeset
420 int len = da.readInt();
169
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
421 boolean good2go = true;
663
46b56864b483 Pull: phase2 - update phases from remote, fncache with added files. Tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 654
diff changeset
422 Nodeid prevNodeid = null;
169
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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diff changeset
423 while (len > 4 && !da.isEmpty() && good2go) {
36
205f9b59b400 Strip parsing logic out from console frontend
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parents:
diff changeset
424 byte[] nb = new byte[80];
205f9b59b400 Strip parsing logic out from console frontend
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parents:
diff changeset
425 da.readBytes(nb, 0, 80);
169
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
426 int dataLength = len - 84 /* length field + 4 nodeids */;
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
427 byte[] data = new byte[dataLength];
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
428 da.readBytes(data, 0, dataLength);
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
429 DataAccess slice = new ByteArrayDataAccess(data); // XXX in fact, may pass a slicing DataAccess.
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
430 // Just need to make sure that we seek to proper location afterwards (where next GroupElement starts),
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parents: 157
diff changeset
431 // regardless whether that slice has read it or not.
532
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 526
diff changeset
432 GroupElement ge = new GroupElement(nb, prevNodeid, slice);
169
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
433 good2go = inspector.element(ge);
170
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 169
diff changeset
434 slice.done(); // BADA doesn't implement done(), but it could (e.g. free array)
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
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parents: 169
diff changeset
435 /// and we'd better tell it we are not going to use it any more. However, it's important to ensure Inspector
71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
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parents: 169
diff changeset
436 // implementations out there do not retain GroupElement.rawData()
532
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 526
diff changeset
437 prevNodeid = ge.node();
36
205f9b59b400 Strip parsing logic out from console frontend
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parents:
diff changeset
438 len = da.isEmpty() ? 0 : da.readInt();
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
439 }
169
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
440 // need to skip up to group end if inspector told he don't want to continue with the group,
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
441 // because outer code may try to read next group immediately as we return back.
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
442 while (len > 4 && !da.isEmpty()) {
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
443 da.skip(len - 4 /* length field */);
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
444 len = da.isEmpty() ? 0 : da.readInt();
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
445 }
36
205f9b59b400 Strip parsing logic out from console frontend
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parents:
diff changeset
446 }
205f9b59b400 Strip parsing logic out from console frontend
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parents:
diff changeset
447
169
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
448 private static void skipGroup(DataAccess da) throws IOException {
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
449 int len = da.readInt();
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
450 while (len > 4 && !da.isEmpty()) {
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
451 da.skip(len - 4); // sizeof(int)
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
452 len = da.isEmpty() ? 0 : da.readInt();
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
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453 }
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454 }
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diff changeset
455
358
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diff changeset
456 @Experimental(reason="Cumbersome API, rawData and apply with byte[] perhaps need replacement with ByteChannel/ByteBuffer, and better Exceptions. Perhaps, shall split into interface and impl")
169
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diff changeset
457 public static class GroupElement {
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458 private final byte[] header; // byte[80] takes 120 bytes, 4 Nodeids - 192
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diff changeset
459 private final DataAccess dataAccess;
329
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diff changeset
460 private Patch patches;
532
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
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diff changeset
461 private final Nodeid deltaBase;
169
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diff changeset
462
532
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
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parents: 526
diff changeset
463 GroupElement(byte[] fourNodeids, Nodeid deltaBaseRev, DataAccess rawDataAccess) {
36
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diff changeset
464 assert fourNodeids != null && fourNodeids.length == 80;
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diff changeset
465 header = fourNodeids;
532
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
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diff changeset
466 deltaBase = deltaBaseRev;
169
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diff changeset
467 dataAccess = rawDataAccess;
36
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diff changeset
468 }
169
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diff changeset
469
358
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diff changeset
470 /**
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diff changeset
471 * <b>node</b> field of the group element
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diff changeset
472 * @return node revision, never <code>null</code>
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diff changeset
473 */
36
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diff changeset
474 public Nodeid node() {
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diff changeset
475 return Nodeid.fromBinary(header, 0);
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diff changeset
476 }
169
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diff changeset
477
358
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diff changeset
478 /**
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diff changeset
479 * <b>p1</b> <i>(parent 1)</i> field of the group element
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diff changeset
480 * @return revision of parent 1, never <code>null</code>
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diff changeset
481 */
36
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482 public Nodeid firstParent() {
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483 return Nodeid.fromBinary(header, 20);
205f9b59b400 Strip parsing logic out from console frontend
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484 }
169
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diff changeset
485
358
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diff changeset
486 /**
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diff changeset
487 * <b>p2</b> <i>(parent 2)</i> field of the group element
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diff changeset
488 * @return revision of parent 2, never <code>null</code>
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parents: 357
diff changeset
489 */
36
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diff changeset
490 public Nodeid secondParent() {
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diff changeset
491 return Nodeid.fromBinary(header, 40);
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parents:
diff changeset
492 }
169
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diff changeset
493
358
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diff changeset
494 /**
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diff changeset
495 * <b>cs</b> <i>(changeset link)</i> field of the group element
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diff changeset
496 * @return changeset revision, never <code>null</code>
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diff changeset
497 */
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diff changeset
498 public Nodeid cset() {
36
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diff changeset
499 return Nodeid.fromBinary(header, 60);
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parents:
diff changeset
500 }
358
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diff changeset
501
532
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 526
diff changeset
502 /**
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
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parents: 526
diff changeset
503 * Revision this element keeps patches against. For the patches of the very first revision returns {@link Nodeid#NULL}.
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
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parents: 526
diff changeset
504 * @return revision of delta base, never <code>null</code>
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 526
diff changeset
505 */
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 526
diff changeset
506 public Nodeid patchBase() {
663
46b56864b483 Pull: phase2 - update phases from remote, fncache with added files. Tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 654
diff changeset
507 return deltaBase == null ? firstParent() : deltaBase;
532
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
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parents: 526
diff changeset
508 }
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 526
diff changeset
509
358
fc8bc2f1edbe Clean internal classes from public API
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
510 public byte[] rawDataByteArray() throws IOException { // XXX IOException or HgInvalidFileException?
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parents: 357
diff changeset
511 return rawData().byteArray();
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
512 }
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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diff changeset
513
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diff changeset
514 public byte[] apply(byte[] baseContent) throws IOException {
fc8bc2f1edbe Clean internal classes from public API
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diff changeset
515 return apply(new ByteArrayDataAccess(baseContent));
fc8bc2f1edbe Clean internal classes from public API
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diff changeset
516 }
169
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diff changeset
517
358
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diff changeset
518 /*package-local*/ DataAccess rawData() {
169
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
519 return dataAccess;
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
520 }
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parents: 157
diff changeset
521
329
694ebabb5cb3 Refactor revlog patch mechanism, towards patch merging
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
522 /*package-local*/ Patch patch() throws IOException {
169
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parents: 157
diff changeset
523 if (patches == null) {
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
524 dataAccess.reset();
329
694ebabb5cb3 Refactor revlog patch mechanism, towards patch merging
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
525 patches = new Patch();
694ebabb5cb3 Refactor revlog patch mechanism, towards patch merging
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 295
diff changeset
526 patches.read(dataAccess);
169
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
527 }
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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parents: 157
diff changeset
528 return patches;
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
529 }
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 157
diff changeset
530
358
fc8bc2f1edbe Clean internal classes from public API
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 357
diff changeset
531 /*package-local*/ byte[] apply(DataAccess baseContent) throws IOException {
329
694ebabb5cb3 Refactor revlog patch mechanism, towards patch merging
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parents: 295
diff changeset
532 return patch().apply(baseContent, -1);
169
8c8e3f372fa1 Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
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diff changeset
533 }
357
dfb8405d996f Clean debug stacktraces
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parents: 354
diff changeset
534
dfb8405d996f Clean debug stacktraces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
535 public String toString() {
dfb8405d996f Clean debug stacktraces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
536 int patchCount;
dfb8405d996f Clean debug stacktraces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
537 try {
dfb8405d996f Clean debug stacktraces
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parents: 354
diff changeset
538 patchCount = patch().count();
dfb8405d996f Clean debug stacktraces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
539 } catch (IOException ex) {
dfb8405d996f Clean debug stacktraces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
540 ex.printStackTrace();
dfb8405d996f Clean debug stacktraces
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parents: 354
diff changeset
541 patchCount = -1;
dfb8405d996f Clean debug stacktraces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
542 }
dfb8405d996f Clean debug stacktraces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
543 return String.format("%s %s %s %s; patches:%d\n", node().shortNotation(), firstParent().shortNotation(), secondParent().shortNotation(), cset().shortNotation(), patchCount);
dfb8405d996f Clean debug stacktraces
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 354
diff changeset
544 }
36
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
545 }
645
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
546
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
547 @Experimental(reason="Work in progress, not an API")
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
548 public class BundleSerializer implements DataSerializer.DataSource {
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
549
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
550 public void serialize(DataSerializer out) throws HgIOException, HgRuntimeException {
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
551 FileInputStream fis = null;
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
552 try {
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
553 fis = new FileInputStream(HgBundle.this.bundleFile);
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
554 byte[] buffer = new byte[8*1024];
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
555 int r;
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
556 while ((r = fis.read(buffer, 0, buffer.length)) > 0) {
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
557 out.write(buffer, 0, r);
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
558 }
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
559
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
560 } catch (IOException ex) {
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
561 throw new HgIOException("Failed to serialize bundle", HgBundle.this.bundleFile);
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
562 } finally {
654
12a4f60ea972 1) Console push tool. 2) Pass class to blame into FileUtils
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 645
diff changeset
563 new FileUtils(HgBundle.this.ctx.getLog(), this).closeQuietly(fis, HgBundle.this.bundleFile);
645
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
564 }
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
565 }
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
566
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
567 public int serializeLength() throws HgRuntimeException {
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
568 return Internals.ltoi(HgBundle.this.bundleFile.length());
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
569 }
14dac192aa26 Push: phase2 - upload bundle with changes to remote server
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 628
diff changeset
570 }
36
205f9b59b400 Strip parsing logic out from console frontend
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
571 }