Mercurial > hg4j

annotate src/org/tmatesoft/hg/internal/SubrepoManager.java @ 515:e6c8b9b654b2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Provide access to HgDataFile being iterated into HgChangesetTreeHandler.TreeElement to give context for renamed files
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 17 Dec 2012 20:51:12 +0100
parents 6865eb742883
children e4ee4bf4c7d0
rev   line source
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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.internal;
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18
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19 import java.io.BufferedReader;
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20 import java.io.File;
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21 import java.io.FileReader;
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22 import java.io.IOException;
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23 import java.util.Arrays;
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24 import java.util.Collections;
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25 import java.util.HashMap;
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26 import java.util.LinkedList;
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27 import java.util.List;
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28 import java.util.Map;
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29
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30 import org.tmatesoft.hg.core.Nodeid;
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31 import org.tmatesoft.hg.repo.HgInternals;
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32 import org.tmatesoft.hg.repo.HgInvalidControlFileException;
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33 import org.tmatesoft.hg.repo.HgRepository;
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34 import org.tmatesoft.hg.repo.HgSubrepoLocation;
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35 import org.tmatesoft.hg.util.Path;
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36
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37 /**
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38 *
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39 * @see http://mercurial.selenic.com/wiki/SubrepoWork
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40 * @see http://mercurial.selenic.com/wiki/Subrepository
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41 * @author Artem Tikhomirov
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42 * @author TMate Software Ltd.
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43 */
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44 public class SubrepoManager /* XXX RepoChangeNotifier, RepoChangeListener */{
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45
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46 private final HgRepository repo;
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47 private List<HgSubrepoLocation> subRepos;
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48
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49 public SubrepoManager(HgRepository hgRepo) {
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50 assert hgRepo != null;
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51 repo = hgRepo;
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52 }
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53
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54 private List<HgSubrepoLocation> readActualState() throws HgInvalidControlFileException {
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55 File hgsubFile = new File(repo.getWorkingDir(), ".hgsub");
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56 if (!hgsubFile.canRead()) {
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57 return Collections.emptyList();
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58 }
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59 Map<String, String> state; // path -> revision
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60 File hgstateFile = null;
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61 try {
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62 hgstateFile = new File(repo.getWorkingDir(), ".hgsubstate");
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63 if (hgstateFile.canRead()) {
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64 state = readState(new BufferedReader(new FileReader(hgstateFile)));
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65 } else {
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66 state = Collections.emptyMap();
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67 }
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68 } catch (IOException ex) {
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69 throw new HgInvalidControlFileException("Subrepo state read failed", ex, hgstateFile);
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70 }
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71 try {
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72 BufferedReader br = new BufferedReader(new FileReader(hgsubFile));
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73 return readConfig(br, state);
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74 } catch (IOException ex) {
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75 throw new HgInvalidControlFileException("Subrepo state read failed", ex, hgsubFile);
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76 }
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77 }
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78
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79 private List<HgSubrepoLocation> readConfig(BufferedReader br, Map<String, String> substate) throws IOException {
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80 try {
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81 String line;
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82 LinkedList<HgSubrepoLocation> res = new LinkedList<HgSubrepoLocation>();
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83 HgInternals hgRepoInternal = new HgInternals(repo);
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84 while ((line = br.readLine()) != null) {
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85 int sep = line.indexOf('=');
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86 if (sep == -1) {
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87 continue;
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88 }
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89 // since both key and value are referenced from HgSubrepoLocation, doesn't make sense
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90 // to have separate String instances (new String(line.substring()))
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91 String key = line.substring(0, sep).trim();
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92 String value = line.substring(sep + 1).trim();
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93 if (key.length() == 0 || value.length() == 0) {
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94 // XXX log bad line?
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95 continue;
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96 }
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97 HgSubrepoLocation.Kind kind = HgSubrepoLocation.Kind.Hg;
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98 int kindEnd = value.indexOf(']', 1);
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99 if (value.charAt(0) == '[' && kindEnd != -1) {
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100 String kindStr = value.substring(1, kindEnd);
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101 value = value.substring(kindEnd + 1);
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102 if ("svn".equals(kindStr)) {
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103 kind = HgSubrepoLocation.Kind.SVN;
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104 } else if ("git".equals(kindStr)) {
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105 kind = HgSubrepoLocation.Kind.Git;
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106 }
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107 }
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108 // TODO respect paths mappings in config file
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109 //
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110 // apparently, key value can't end with '/', `hg commit` fails if it does:
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111 // abort: path ends in directory separator: fourth/
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112 Path p = Path.create(key.charAt(key.length()-1) == '/' ? key : key + '/');
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113 String revValue = substate.get(key);
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114 HgSubrepoLocation loc = hgRepoInternal.newSubrepo(p, value, kind, revValue == null ? null : Nodeid.fromAscii(revValue));
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115 res.add(loc);
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116 }
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117 return Arrays.asList(res.toArray(new HgSubrepoLocation[res.size()]));
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118 } finally {
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119 br.close();
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120 }
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121 }
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122
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123 private Map<String, String> readState(BufferedReader br) throws IOException {
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124 // TODO reuse for other files with <revision><space><value> format, like .hgtags
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125 HashMap<String, String> rv = new HashMap<String, String>();
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126 try {
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127 String line;
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128 while ((line = br.readLine()) != null) {
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129 int sep = line.trim().indexOf(' ');
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130 if (sep != -1) {
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131 rv.put(line.substring(sep+1).trim(), line.substring(0, sep).trim());
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132 }
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133 }
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134 } finally {
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135 br.close();
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136 }
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137 return rv;
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138 }
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139
348
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140 /*public to allow access from HgRepository, otherwise package-local*/
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141 public void read() throws HgInvalidControlFileException {
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142 subRepos = readActualState();
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143 }
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144
239
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145 public List<HgSubrepoLocation> all(/*int revision, or TIP|WC*/) {
348
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146 assert subRepos != null;
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147 return subRepos;
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148 }
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149 }