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annotate src/org/tmatesoft/hg/repo/HgLookup.java @ 171:2c3e96674e2a

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Towards outgoing changes - initial detection logic, get connected with remote repo stub
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 25 Mar 2011 00:05:52 +0100
parents 71ddbf8603e8
children 87f40938c9b2
rev   line source
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1 /*
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2 * Copyright (c) 2010-2011 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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18
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19 import java.io.File;
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20 import java.io.IOException;
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21 import java.net.MalformedURLException;
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22 import java.net.URL;
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23
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24 import org.tmatesoft.hg.core.HgException;
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25 import org.tmatesoft.hg.internal.ConfigFile;
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26 import org.tmatesoft.hg.internal.DataAccessProvider;
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27 import org.tmatesoft.hg.internal.Internals;
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28
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29 /**
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30 * Utility methods to find Mercurial repository at a given location
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31 *
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32 * @author Artem Tikhomirov
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33 * @author TMate Software Ltd.
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34 */
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35 public class HgLookup {
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36
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37 public HgRepository detectFromWorkingDir() throws HgException {
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38 return detect(System.getProperty("user.dir"));
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39 }
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40
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41 public HgRepository detect(String location) throws HgException {
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42 return detect(new File(location));
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43 }
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44
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45 // look up in specified location and above
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46 public HgRepository detect(File location) throws HgException {
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47 File dir = location.getAbsoluteFile();
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48 File repository;
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49 do {
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50 repository = new File(dir, ".hg");
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51 if (repository.exists() && repository.isDirectory()) {
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52 break;
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53 }
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54 repository = null;
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55 dir = dir.getParentFile();
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56
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57 } while(dir != null);
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58 if (repository == null) {
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59 // return invalid repository
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60 return new HgRepository(location.getPath());
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61 }
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62 try {
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63 String repoPath = repository.getParentFile().getCanonicalPath();
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64 return new HgRepository(repoPath, repository);
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65 } catch (IOException ex) {
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66 throw new HgException(location.toString(), ex);
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67 }
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68 }
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70 public HgBundle loadBundle(File location) throws HgException {
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71 if (location == null || !location.canRead()) {
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72 throw new IllegalArgumentException();
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73 }
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74 return new HgBundle(new DataAccessProvider(), location);
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75 }
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77 public HgRemoteRepository detect(URL url) throws HgException {
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78 if (url == null) {
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79 throw new IllegalArgumentException();
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80 }
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81 if (Boolean.FALSE.booleanValue()) {
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82 throw HgRepository.notImplemented();
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83 }
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84 if (url.getProtocol() == null) {
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85 // try configuration keys
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86 String key = url.getHost();
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87 ConfigFile cfg = new Internals().newConfigFile();
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88 cfg.addLocation(new File(System.getProperty("user.home"), ".hgrc"));
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89 String server = cfg.getSection("paths").get(key);
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90 if (server == null) {
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91 throw new HgException(String.format("Can't find server %s specification in the config", key));
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92 }
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93 try {
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94 url = new URL(server);
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95 } catch (MalformedURLException ex) {
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96 throw new HgException(ex);
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97 }
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98 }
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99 return new HgRemoteRepository(url);
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100 }
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101 }