Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgSubrepoLocation.java @ 583:47dfa0ec7e35

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Effective revlog patching
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 24 Apr 2013 15:39:53 +0200
parents 2f9ed6bcefa2
children
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1 /*
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2 * Copyright (c) 2011-2012 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 java.io.File;
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20
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21 import org.tmatesoft.hg.core.HgRepositoryNotFoundException;
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22 import org.tmatesoft.hg.core.Nodeid;
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23 import org.tmatesoft.hg.internal.Internals;
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24 import org.tmatesoft.hg.util.Path;
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25
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26 /**
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27 * Descriptor for subrepository location
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28 *
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29 * @see http://mercurial.selenic.com/wiki/Subrepository
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30 * @author Artem Tikhomirov
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31 * @author TMate Software Ltd.
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32 */
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33 public class HgSubrepoLocation {
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34
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35 private final HgRepository owner;
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36 private final Kind kind;
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37 private final Path location;
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38 private final String source;
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39 private final Nodeid revInfo;
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41 public enum Kind { Hg, SVN, Git, }
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42
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43 /**
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44 *
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45 * @param parentRepo
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46 * @param repoLocation path, shall be valid directory (i.e. even if .hgsub doesn't specify trailing slash, this one shall)
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47 * @param actualLocation
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48 * @param type
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49 * @param revision may be <code>null</code>
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50 */
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51 /*package-local*/ HgSubrepoLocation(HgRepository parentRepo, Path repoLocation, String actualLocation, Kind type, Nodeid revision) {
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52 owner = parentRepo;
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53 location = repoLocation;
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54 source = actualLocation;
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55 kind = type;
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56 revInfo = revision;
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57 }
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58
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59 /**
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60 * Sub-repository's location within owning repository, always directory, <code>path/to/nested</code>.
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61 * <p>
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62 * May differ from left-hand, key value from <code>.hgsub</code> if the latter doesn't include trailing slash, which is required
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63 * for {@link Path} objects
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64 *
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65 * @return path to nested repository relative to owner's location
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66 */
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67 public Path getLocation() {
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68 return location;
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69 }
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70
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71 /**
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72 * Right-hand value from <code>.hgsub</code>, with <code>[kind]</code> stripped, if any.
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73 * @return sub-repository's source
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74 */
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75 public String getSource() {
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76 return source;
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77 }
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78
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79 /**
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80 * Sub-repository kind, either Mercurial, Subversion or Git
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81 * @return one of predefined constants
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82 */
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83 public Kind getType() {
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84 return kind;
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85 }
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86
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87 /**
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88 * For a nested repository that has been committed at least once, returns
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89 * its revision as known from <code>.hgsubstate</code>
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90 *
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91 * <p>Note, this revision belongs to the nested repository history, not that of owning repository.
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92 *
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93 * @return revision of the nested repository, or <code>null</code> if not yet committed
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94 */
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95 public Nodeid getRevision() {
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96 return revInfo;
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97 }
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99 /**
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100 * Answers whether this sub repository has ever been part of a commit of the owner repository
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101 *
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102 * @return <code>true</code> if owning repository records {@link #getRevision() revision} of this sub-repository
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103 */
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104 public boolean isCommitted() {
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105 return revInfo != null;
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106 }
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107
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108 /**
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109 * Answers whether there are local changes in the sub-repository,
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110 * @return <code>true</code> if it's dirty
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111 */
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112 public boolean hasChanges() {
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113 throw Internals.notImplemented();
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114 }
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115
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116 /**
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117 * Access repository that owns nested one described by this object
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118 */
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119 public HgRepository getOwner() {
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120 return owner;
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121 }
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122
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123 /**
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124 * Access nested repository as a full-fledged Mercurial repository
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125 *
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126 * @return object to access sub-repository
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127 * @throws HgRepositoryNotFoundException if failed to find repository
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128 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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129 */
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130 public HgRepository getRepo() throws HgRepositoryNotFoundException {
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131 if (kind != Kind.Hg) {
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132 throw new HgInvalidStateException(String.format("Unsupported subrepository %s", kind));
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133 }
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134 return new HgLookup().detect(new File(owner.getWorkingDir(), source));
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135 }
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136 }