Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgRemoteRepository.java @ 306:971baa95fb07

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Experimental code to build file history, handy access to changeset added
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 22 Sep 2011 04:05:41 +0200
parents 981f9f50bb6c
children dfb8405d996f
rev   line source
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1 /*
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2 * Copyright (c) 2011 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.repo;
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19 import java.io.File;
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20 import java.io.FileOutputStream;
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21 import java.io.IOException;
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22 import java.io.InputStream;
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23 import java.io.InputStreamReader;
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24 import java.io.OutputStream;
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25 import java.io.StreamTokenizer;
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26 import java.net.HttpURLConnection;
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27 import java.net.MalformedURLException;
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28 import java.net.URL;
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29 import java.net.URLConnection;
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30 import java.security.cert.CertificateException;
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31 import java.security.cert.X509Certificate;
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32 import java.util.ArrayList;
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33 import java.util.Collection;
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34 import java.util.Collections;
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35 import java.util.Iterator;
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36 import java.util.LinkedHashMap;
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37 import java.util.LinkedList;
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38 import java.util.List;
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39 import java.util.Map;
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40 import java.util.prefs.BackingStoreException;
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41 import java.util.prefs.Preferences;
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42 import java.util.zip.InflaterInputStream;
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43
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44 import javax.net.ssl.HttpsURLConnection;
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45 import javax.net.ssl.SSLContext;
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46 import javax.net.ssl.TrustManager;
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47 import javax.net.ssl.X509TrustManager;
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48
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49 import org.tmatesoft.hg.core.HgBadArgumentException;
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50 import org.tmatesoft.hg.core.HgBadStateException;
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51 import org.tmatesoft.hg.core.HgInvalidFileException;
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52 import org.tmatesoft.hg.core.HgRemoteConnectionException;
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53 import org.tmatesoft.hg.core.Nodeid;
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54 import org.tmatesoft.hg.core.SessionContext;
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55
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56 /**
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57 * WORK IN PROGRESS, DO NOT USE
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58 *
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59 * @see http://mercurial.selenic.com/wiki/WireProtocol
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60 *
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61 * @author Artem Tikhomirov
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62 * @author TMate Software Ltd.
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63 */
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64 public class HgRemoteRepository {
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65
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66 private final URL url;
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67 private final SSLContext sslContext;
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68 private final String authInfo;
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69 private final boolean debug = Boolean.parseBoolean(System.getProperty("hg4j.remote.debug"));
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70 private HgLookup lookupHelper;
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71 private final SessionContext sessionContext;
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72
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73 HgRemoteRepository(SessionContext ctx, URL url) throws HgBadArgumentException {
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74 if (url == null || ctx == null) {
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75 throw new IllegalArgumentException();
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76 }
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77 this.url = url;
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78 sessionContext = ctx;
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79 if ("https".equals(url.getProtocol())) {
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80 try {
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81 sslContext = SSLContext.getInstance("SSL");
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82 class TrustEveryone implements X509TrustManager {
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83 public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
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84 if (debug) {
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85 System.out.println("checkClientTrusted:" + authType);
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86 }
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87 }
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88 public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
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89 if (debug) {
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90 System.out.println("checkServerTrusted:" + authType);
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91 }
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92 }
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93 public X509Certificate[] getAcceptedIssuers() {
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94 return new X509Certificate[0];
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95 }
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96 };
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97 sslContext.init(null, new TrustManager[] { new TrustEveryone() }, null);
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98 } catch (Exception ex) {
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99 throw new HgBadArgumentException("Can't initialize secure connection", ex);
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100 }
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101 } else {
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102 sslContext = null;
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103 }
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104 if (url.getUserInfo() != null) {
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105 String ai = null;
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106 try {
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107 // Hack to get Base64-encoded credentials
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108 Preferences tempNode = Preferences.userRoot().node("xxx");
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109 tempNode.putByteArray("xxx", url.getUserInfo().getBytes());
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110 ai = tempNode.get("xxx", null);
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111 tempNode.removeNode();
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112 } catch (BackingStoreException ex) {
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113 ex.printStackTrace();
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114 // IGNORE
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115 }
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116 authInfo = ai;
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117 } else {
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118 authInfo = null;
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119 }
171
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120 }
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121
215
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122 public boolean isInvalid() throws HgRemoteConnectionException {
181
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123 // say hello to server, check response
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124 if (Boolean.FALSE.booleanValue()) {
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125 throw HgRepository.notImplemented();
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126 }
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127 return false; // FIXME
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128 }
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129
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130 /**
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131 * @return human-readable address of the server, without user credentials or any other security information
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132 */
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133 public String getLocation() {
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134 if (url.getUserInfo() == null) {
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135 return url.toExternalForm();
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136 }
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137 if (url.getPort() != -1) {
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138 return String.format("%s://%s:%d%s", url.getProtocol(), url.getHost(), url.getPort(), url.getPath());
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139 } else {
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140 return String.format("%s://%s%s", url.getProtocol(), url.getHost(), url.getPath());
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141 }
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142 }
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143
215
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144 public List<Nodeid> heads() throws HgRemoteConnectionException {
178
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145 try {
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146 URL u = new URL(url, url.getPath() + "?cmd=heads");
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147 HttpURLConnection c = setupConnection(u.openConnection());
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148 c.connect();
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149 if (debug) {
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150 dumpResponseHeader(u, c);
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151 }
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152 InputStreamReader is = new InputStreamReader(c.getInputStream(), "US-ASCII");
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153 StreamTokenizer st = new StreamTokenizer(is);
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154 st.ordinaryChars('0', '9');
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155 st.wordChars('0', '9');
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156 st.eolIsSignificant(false);
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157 LinkedList<Nodeid> parseResult = new LinkedList<Nodeid>();
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158 while (st.nextToken() != StreamTokenizer.TT_EOF) {
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159 parseResult.add(Nodeid.fromAscii(st.sval));
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160 }
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161 return parseResult;
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162 } catch (MalformedURLException ex) {
215
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163 throw new HgRemoteConnectionException("Bad URL", ex).setRemoteCommand("heads").setServerInfo(getLocation());
178
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164 } catch (IOException ex) {
215
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165 throw new HgRemoteConnectionException("Communication failure", ex).setRemoteCommand("heads").setServerInfo(getLocation());
178
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166 }
171
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167 }
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168
215
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169 public List<Nodeid> between(Nodeid tip, Nodeid base) throws HgRemoteConnectionException {
177
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170 Range r = new Range(base, tip);
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171 // XXX shall handle errors like no range key in the returned map, not sure how.
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172 return between(Collections.singletonList(r)).get(r);
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173 }
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174
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175 /**
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176 * @param ranges
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177 * @return map, where keys are input instances, values are corresponding server reply
215
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178 * @throws HgRemoteConnectionException
177
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179 */
215
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180 public Map<Range, List<Nodeid>> between(Collection<Range> ranges) throws HgRemoteConnectionException {
177
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181 if (ranges.isEmpty()) {
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182 return Collections.emptyMap();
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183 }
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184 // if fact, shall do other way round, this method shall send
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185 LinkedHashMap<Range, List<Nodeid>> rv = new LinkedHashMap<HgRemoteRepository.Range, List<Nodeid>>(ranges.size() * 4 / 3);
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186 StringBuilder sb = new StringBuilder(20 + ranges.size() * 82);
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187 sb.append("pairs=");
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188 for (Range r : ranges) {
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189 sb.append(r.end.toString());
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190 sb.append('-');
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191 sb.append(r.start.toString());
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192 sb.append('+');
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193 }
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194 if (sb.charAt(sb.length() - 1) == '+') {
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195 // strip last space
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196 sb.setLength(sb.length() - 1);
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197 }
176
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198 try {
177
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199 boolean usePOST = ranges.size() > 3;
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200 URL u = new URL(url, url.getPath() + "?cmd=between" + (usePOST ? "" : '&' + sb.toString()));
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201 HttpURLConnection c = setupConnection(u.openConnection());
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202 if (usePOST) {
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203 c.setRequestMethod("POST");
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204 c.setRequestProperty("Content-Length", String.valueOf(sb.length()/*nodeids are ASCII, bytes == characters */));
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205 c.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
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206 c.setDoOutput(true);
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diff changeset
207 c.connect();
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208 OutputStream os = c.getOutputStream();
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209 os.write(sb.toString().getBytes());
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210 os.flush();
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diff changeset
211 os.close();
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diff changeset
212 } else {
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diff changeset
213 c.connect();
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214 }
178
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diff changeset
215 if (debug) {
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diff changeset
216 System.out.printf("%d ranges, method:%s \n", ranges.size(), c.getRequestMethod());
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diff changeset
217 dumpResponseHeader(u, c);
176
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218 }
177
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diff changeset
219 InputStreamReader is = new InputStreamReader(c.getInputStream(), "US-ASCII");
176
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220 StreamTokenizer st = new StreamTokenizer(is);
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diff changeset
221 st.ordinaryChars('0', '9');
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diff changeset
222 st.wordChars('0', '9');
177
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223 st.eolIsSignificant(true);
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224 Iterator<Range> rangeItr = ranges.iterator();
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225 LinkedList<Nodeid> currRangeList = null;
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diff changeset
226 Range currRange = null;
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diff changeset
227 boolean possiblyEmptyNextLine = true;
176
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diff changeset
228 while (st.nextToken() != StreamTokenizer.TT_EOF) {
177
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diff changeset
229 if (st.ttype == StreamTokenizer.TT_EOL) {
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230 if (possiblyEmptyNextLine) {
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231 // newline follows newline;
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diff changeset
232 assert currRange == null;
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233 assert currRangeList == null;
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diff changeset
234 if (!rangeItr.hasNext()) {
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diff changeset
235 throw new HgBadStateException();
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diff changeset
236 }
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diff changeset
237 rv.put(rangeItr.next(), Collections.<Nodeid>emptyList());
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diff changeset
238 } else {
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diff changeset
239 if (currRange == null || currRangeList == null) {
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240 throw new HgBadStateException();
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241 }
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242 // indicate next range value is needed
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243 currRange = null;
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244 currRangeList = null;
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diff changeset
245 possiblyEmptyNextLine = true;
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246 }
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diff changeset
247 } else {
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diff changeset
248 possiblyEmptyNextLine = false;
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diff changeset
249 if (currRange == null) {
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diff changeset
250 if (!rangeItr.hasNext()) {
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diff changeset
251 throw new HgBadStateException();
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diff changeset
252 }
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diff changeset
253 currRange = rangeItr.next();
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diff changeset
254 currRangeList = new LinkedList<Nodeid>();
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diff changeset
255 rv.put(currRange, currRangeList);
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diff changeset
256 }
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diff changeset
257 Nodeid nid = Nodeid.fromAscii(st.sval);
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diff changeset
258 currRangeList.addLast(nid);
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diff changeset
259 }
176
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260 }
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diff changeset
261 is.close();
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diff changeset
262 return rv;
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diff changeset
263 } catch (MalformedURLException ex) {
215
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diff changeset
264 throw new HgRemoteConnectionException("Bad URL", ex).setRemoteCommand("between").setServerInfo(getLocation());
176
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diff changeset
265 } catch (IOException ex) {
215
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parents: 210
diff changeset
266 throw new HgRemoteConnectionException("Communication failure", ex).setRemoteCommand("between").setServerInfo(getLocation());
176
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diff changeset
267 }
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diff changeset
268 }
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diff changeset
269
215
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diff changeset
270 public List<RemoteBranch> branches(List<Nodeid> nodes) throws HgRemoteConnectionException {
178
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diff changeset
271 StringBuilder sb = new StringBuilder(20 + nodes.size() * 41);
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diff changeset
272 sb.append("nodes=");
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diff changeset
273 for (Nodeid n : nodes) {
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diff changeset
274 sb.append(n.toString());
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diff changeset
275 sb.append('+');
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diff changeset
276 }
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diff changeset
277 if (sb.charAt(sb.length() - 1) == '+') {
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diff changeset
278 // strip last space
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diff changeset
279 sb.setLength(sb.length() - 1);
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diff changeset
280 }
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diff changeset
281 try {
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diff changeset
282 URL u = new URL(url, url.getPath() + "?cmd=branches&" + sb.toString());
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diff changeset
283 HttpURLConnection c = setupConnection(u.openConnection());
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diff changeset
284 c.connect();
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diff changeset
285 if (debug) {
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diff changeset
286 dumpResponseHeader(u, c);
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diff changeset
287 }
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diff changeset
288 InputStreamReader is = new InputStreamReader(c.getInputStream(), "US-ASCII");
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diff changeset
289 StreamTokenizer st = new StreamTokenizer(is);
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diff changeset
290 st.ordinaryChars('0', '9');
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diff changeset
291 st.wordChars('0', '9');
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diff changeset
292 st.eolIsSignificant(false);
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diff changeset
293 ArrayList<Nodeid> parseResult = new ArrayList<Nodeid>(nodes.size() * 4);
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diff changeset
294 while (st.nextToken() != StreamTokenizer.TT_EOF) {
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diff changeset
295 parseResult.add(Nodeid.fromAscii(st.sval));
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diff changeset
296 }
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diff changeset
297 if (parseResult.size() != nodes.size() * 4) {
215
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diff changeset
298 throw new HgRemoteConnectionException(String.format("Bad number of nodeids in result (shall be factor 4), expected %d, got %d", nodes.size()*4, parseResult.size()));
178
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diff changeset
299 }
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diff changeset
300 ArrayList<RemoteBranch> rv = new ArrayList<RemoteBranch>(nodes.size());
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diff changeset
301 for (int i = 0; i < nodes.size(); i++) {
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diff changeset
302 RemoteBranch rb = new RemoteBranch(parseResult.get(i*4), parseResult.get(i*4 + 1), parseResult.get(i*4 + 2), parseResult.get(i*4 + 3));
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diff changeset
303 rv.add(rb);
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diff changeset
304 }
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diff changeset
305 return rv;
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diff changeset
306 } catch (MalformedURLException ex) {
215
41a778e3fd31 Issue 5: Facilities for progress and cancellation. More specific exceptions. Exceptions from callbacks as RuntimeException
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diff changeset
307 throw new HgRemoteConnectionException("Bad URL", ex).setRemoteCommand("branches").setServerInfo(getLocation());
178
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diff changeset
308 } catch (IOException ex) {
215
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diff changeset
309 throw new HgRemoteConnectionException("Communication failure", ex).setRemoteCommand("branches").setServerInfo(getLocation());
178
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310 }
171
2c3e96674e2a Towards outgoing changes - initial detection logic, get connected with remote repo stub
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parents: 170
diff changeset
311 }
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:
diff changeset
312
186
44a34baabea0 Clone refactored into a command. HgBundle needs means to control its lifecycle, to be deleted when no longer needed
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parents: 184
diff changeset
313 /*
202
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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diff changeset
314 * XXX need to describe behavior when roots arg is empty; our RepositoryComparator code currently returns empty lists when
706bcc7cfee4 Basic test for HgIncomingCommand. Fix RepositoryComparator for cases when whole repository is unknown. Respect freshly initialized (empty) repositories in general.
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315 * no common elements found, which in turn means we need to query changes starting with NULL nodeid.
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316 *
186
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317 * WireProtocol wiki: roots = a list of the latest nodes on every service side changeset branch that both the client and server know about.
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318 *
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319 * Perhaps, shall be named 'changegroup'
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320
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321 * Changegroup:
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322 * http://mercurial.selenic.com/wiki/Merge
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323 * http://mercurial.selenic.com/wiki/WireProtocol
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324 *
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325 * according to latter, bundleformat data is sent through zlib
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326 * (there's no header like HG10?? with the server output, though,
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327 * as one may expect according to http://mercurial.selenic.com/wiki/BundleFormat)
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328 */
295
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329 public HgBundle getChanges(List<Nodeid> roots) throws HgRemoteConnectionException, HgInvalidFileException {
202
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330 List<Nodeid> _roots = roots.isEmpty() ? Collections.singletonList(Nodeid.NULL) : roots;
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331 StringBuilder sb = new StringBuilder(20 + _roots.size() * 41);
179
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332 sb.append("roots=");
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333 for (Nodeid n : _roots) {
179
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334 sb.append(n.toString());
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335 sb.append('+');
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336 }
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337 if (sb.charAt(sb.length() - 1) == '+') {
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338 // strip last space
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339 sb.setLength(sb.length() - 1);
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340 }
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341 try {
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342 URL u = new URL(url, url.getPath() + "?cmd=changegroup&" + sb.toString());
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343 HttpURLConnection c = setupConnection(u.openConnection());
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344 c.connect();
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345 if (debug) {
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346 dumpResponseHeader(u, c);
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347 }
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348 File tf = writeBundle(c.getInputStream(), false, "HG10GZ" /*didn't see any other that zip*/);
190
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349 if (debug) {
210
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350 System.out.printf("Wrote bundle %s for roots %s\n", tf, sb);
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351 }
186
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352 return getLookupHelper().loadBundle(tf);
215
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353 } catch (MalformedURLException ex) { // XXX in fact, this exception might be better to be re-thrown as RuntimeEx,
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354 // as there's little user can do about this issue (URLs are constructed by our code)
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355 throw new HgRemoteConnectionException("Bad URL", ex).setRemoteCommand("changegroup").setServerInfo(getLocation());
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356 } catch (IOException ex) {
215
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357 throw new HgRemoteConnectionException("Communication failure", ex).setRemoteCommand("changegroup").setServerInfo(getLocation());
179
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358 }
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359 }
186
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360
203
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361 @Override
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362 public String toString() {
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363 return getClass().getSimpleName() + '[' + getLocation() + ']';
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364 }
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365
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366 private HgLookup getLookupHelper() {
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367 if (lookupHelper == null) {
295
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368 lookupHelper = new HgLookup(sessionContext);
186
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369 }
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370 return lookupHelper;
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371 }
176
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372
177
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373 private HttpURLConnection setupConnection(URLConnection urlConnection) {
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374 urlConnection.setRequestProperty("User-Agent", "hg4j/0.5.0");
176
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375 urlConnection.addRequestProperty("Accept", "application/mercurial-0.1");
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376 if (authInfo != null) {
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377 urlConnection.addRequestProperty("Authorization", "Basic " + authInfo);
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378 }
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379 if (sslContext != null) {
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380 ((HttpsURLConnection) urlConnection).setSSLSocketFactory(sslContext.getSocketFactory());
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381 }
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382 return (HttpURLConnection) urlConnection;
176
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383 }
171
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384
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385 private void dumpResponseHeader(URL u, HttpURLConnection c) {
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386 System.out.printf("Query (%d bytes):%s\n", u.getQuery().length(), u.getQuery());
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387 System.out.println("Response headers:");
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388 final Map<String, List<String>> headerFields = c.getHeaderFields();
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389 for (String s : headerFields.keySet()) {
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390 System.out.printf("%s: %s\n", s, c.getHeaderField(s));
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391 }
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392 }
179
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393
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394 private static File writeBundle(InputStream is, boolean decompress, String header) throws IOException {
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395 InputStream zipStream = decompress ? new InflaterInputStream(is) : is;
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396 File tf = File.createTempFile("hg-bundle-", null);
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397 FileOutputStream fos = new FileOutputStream(tf);
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398 fos.write(header.getBytes());
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399 int r;
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400 byte[] buf = new byte[8*1024];
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401 while ((r = zipStream.read(buf)) != -1) {
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402 fos.write(buf, 0, r);
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403 }
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404 fos.close();
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405 zipStream.close();
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406 return tf;
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407 }
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408
178
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409
176
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410 public static final class Range {
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411 /**
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412 * Root of the range, earlier revision
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413 */
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414 public final Nodeid start;
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415 /**
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416 * Head of the range, later revision.
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417 */
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418 public final Nodeid end;
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419
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420 /**
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421 * @param from - root/base revision
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422 * @param to - head/tip revision
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423 */
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424 public Range(Nodeid from, Nodeid to) {
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425 start = from;
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426 end = to;
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427 }
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428 }
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ec1820f64d2b Complete incoming cmdline client, with both lite (revisions) and complete (full changeset) information dump
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429
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430 public static final class RemoteBranch {
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431 public final Nodeid head, root, p1, p2;
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432
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433 public RemoteBranch(Nodeid h, Nodeid r, Nodeid parent1, Nodeid parent2) {
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434 head = h;
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435 root = r;
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436 p1 = parent1;
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437 p2 = parent2;
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438 }
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439
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440 @Override
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441 public boolean equals(Object obj) {
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442 if (this == obj) {
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443 return true;
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444 }
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445 if (false == obj instanceof RemoteBranch) {
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446 return false;
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447 }
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448 RemoteBranch o = (RemoteBranch) obj;
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9fb50c04f03c Use Nodeid.isNull check instead of NULL.equals
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449 // in fact, p1 and p2 are not supposed to be null, ever (at least for RemoteBranch created from server output)
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450 return head.equals(o.head) && root.equals(o.root) && (p1 == null && o.p1 == null || p1.equals(o.p1)) && (p2 == null && o.p2 == null || p2.equals(o.p2));
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451 }
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452 }
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71ddbf8603e8 Initial clone: populate given directory from a bundle. Everything but remote server access is there, albeit prototype code style
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453 }