Mercurial > hg4j

annotate src/org/tmatesoft/hg/repo/HgBundle.java @ 664:ae2d439fbed3

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