Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgLookup.java @ 502:37d97854c6ad

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Respect changesets with no list of changed files, as discovered with Issue 41
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 29 Oct 2012 20:06:16 +0100
parents e4eaa23e3442
children 0bd2d0441d8f
rev   line source
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1 /*
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2 * Copyright (c) 2010-2012 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 static org.tmatesoft.hg.util.LogFacility.Severity.Warn;
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20
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21 import java.io.File;
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22 import java.net.MalformedURLException;
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23 import java.net.URL;
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25 import org.tmatesoft.hg.core.HgBadArgumentException;
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26 import org.tmatesoft.hg.core.HgRepositoryNotFoundException;
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27 import org.tmatesoft.hg.core.SessionContext;
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28 import org.tmatesoft.hg.internal.BasicSessionContext;
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29 import org.tmatesoft.hg.internal.ConfigFile;
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30 import org.tmatesoft.hg.internal.DataAccessProvider;
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31
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32 /**
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33 * Utility methods to find Mercurial repository at a given location
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34 *
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35 * @author Artem Tikhomirov
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36 * @author TMate Software Ltd.
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37 */
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38 public class HgLookup {
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39
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40 private ConfigFile globalCfg;
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41 private SessionContext sessionContext;
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43 public HgLookup() {
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44 }
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45
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46 public HgLookup(SessionContext ctx) {
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47 sessionContext = ctx;
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48 }
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50 public HgRepository detectFromWorkingDir() throws HgRepositoryNotFoundException {
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51 return detect(System.getProperty("user.dir"));
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52 }
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53
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54 public HgRepository detect(String location) throws HgRepositoryNotFoundException {
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55 return detect(new File(location));
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56 }
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58 // look up in specified location and above
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59 public HgRepository detect(File location) throws HgRepositoryNotFoundException {
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60 File dir = location.getAbsoluteFile();
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61 File repository;
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62 do {
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63 repository = new File(dir, ".hg");
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64 if (repository.exists() && repository.isDirectory()) {
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65 break;
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66 }
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67 repository = null;
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68 dir = dir.getParentFile();
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69
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70 } while(dir != null);
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71 if (repository == null) {
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72 throw new HgRepositoryNotFoundException(String.format("Can't locate .hg/ directory of Mercurial repository in %s nor in parent dirs", location)).setLocation(location.getPath());
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73 }
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74 String repoPath = repository.getParentFile().getAbsolutePath();
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75 return new HgRepository(getContext(), repoPath, repository);
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76 }
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78 public HgBundle loadBundle(File location) throws HgRepositoryNotFoundException {
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79 if (location == null || !location.canRead()) {
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80 throw new HgRepositoryNotFoundException(String.format("Can't read file %s", location)).setLocation(String.valueOf(location));
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81 }
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82 return new HgBundle(getContext(), new DataAccessProvider(getContext()), location).link();
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83 }
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85 /**
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86 * Try to instantiate remote server.
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87 * @param key either URL or a key from configuration file that points to remote server
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88 * @param hgRepo <em>NOT USED YET<em> local repository that may have extra config, or default remote location
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89 * @return an instance featuring access to remote repository, check {@link HgRemoteRepository#isInvalid()} before actually using it
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90 * @throws HgBadArgumentException if anything is wrong with the remote server's URL
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91 */
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92 public HgRemoteRepository detectRemote(String key, HgRepository hgRepo) throws HgBadArgumentException {
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93 URL url;
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94 Exception toReport;
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95 try {
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96 url = new URL(key);
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97 toReport = null;
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98 } catch (MalformedURLException ex) {
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99 url = null;
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100 toReport = ex;
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101 }
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102 if (url == null) {
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103 String server = getGlobalConfig().getSection("paths").get(key);
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104 if (server == null) {
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105 throw new HgBadArgumentException(String.format("Can't find server %s specification in the config", key), toReport);
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106 }
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107 try {
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108 url = new URL(server);
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109 } catch (MalformedURLException ex) {
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110 throw new HgBadArgumentException(String.format("Found %s server spec in the config, but failed to initialize with it", key), ex);
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111 }
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112 }
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113 return new HgRemoteRepository(getContext(), url);
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114 }
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115
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116 public HgRemoteRepository detect(URL url) throws HgBadArgumentException {
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117 if (url == null) {
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118 throw new IllegalArgumentException();
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119 }
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120 if (Boolean.FALSE.booleanValue()) {
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121 throw HgRepository.notImplemented();
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122 }
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123 return new HgRemoteRepository(getContext(), url);
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124 }
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125
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126 private ConfigFile getGlobalConfig() {
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127 if (globalCfg == null) {
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128 globalCfg = new ConfigFile(getContext());
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129 try {
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130 globalCfg.addLocation(new File(System.getProperty("user.home"), ".hgrc"));
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131 } catch (HgInvalidFileException ex) {
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132 // XXX perhaps, makes sense to let caller/client know that we've failed to read global config?
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133 getContext().getLog().dump(getClass(), Warn, ex, null);
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134 }
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135 }
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136 return globalCfg;
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137 }
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138
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139 private SessionContext getContext() {
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140 if (sessionContext == null) {
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141 sessionContext = new BasicSessionContext(null);
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142 }
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143 return sessionContext;
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144 }
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145 }