Mercurial > jhg

annotate src/org/tmatesoft/hg/internal/SubrepoManager.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 a0864b2892cd
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.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.repo.HgInternals;
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31 import org.tmatesoft.hg.repo.HgRepository;
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32 import org.tmatesoft.hg.repo.HgSubrepoLocation;
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33
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34 /**
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35 *
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36 * @author Artem Tikhomirov
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37 * @author TMate Software Ltd.
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38 */
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39 public class SubrepoManager /* XXX RepoChangeNotifier, RepoChangeListener */{
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40
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41 private final HgRepository repo;
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42 private List<HgSubrepoLocation> subRepos;
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43
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44 public SubrepoManager(HgRepository hgRepo) {
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45 assert hgRepo != null;
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46 repo = hgRepo;
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47 }
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48
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49 private List<HgSubrepoLocation> readActualState() {
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50 File hgsubFile = new File(repo.getWorkingDir(), ".hgsub");
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51 if (!hgsubFile.canRead()) {
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52 return Collections.emptyList();
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53 }
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54 try {
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55 Map<String, String> state; // path -> revision
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56 File hgstateFile = new File(repo.getWorkingDir(), ".hgsubstate");
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57 if (hgstateFile.canRead()) {
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58 state = readState(new BufferedReader(new FileReader(hgstateFile)));
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59 } else {
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60 state = Collections.emptyMap();
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61 }
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62 BufferedReader br = new BufferedReader(new FileReader(hgsubFile));
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63 return readConfig(br, state);
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64 } catch (IOException ex) {
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65 HgInternals.getContext(repo).getLog().error(getClass(), ex, "Subrepo state read failed");
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66 }
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67 return Collections.emptyList();
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68 }
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69
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70 private List<HgSubrepoLocation> readConfig(BufferedReader br, Map<String, String> substate) throws IOException {
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71 try {
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72 String line;
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73 LinkedList<HgSubrepoLocation> res = new LinkedList<HgSubrepoLocation>();
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74 while ((line = br.readLine()) != null) {
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75 int sep = line.indexOf('=');
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76 if (sep == -1) {
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77 continue;
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78 }
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79 // since both key and value are referenced from HgSubrepoLocation, doesn't make sense
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80 // to have separate String instances (new String(line.substring()))
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81 String key = line.substring(0, sep).trim();
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82 String value = line.substring(sep + 1).trim();
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83 if (value.length() == 0) {
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84 // XXX log bad line?
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85 continue;
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86 }
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87 HgSubrepoLocation.Kind kind = HgSubrepoLocation.Kind.Hg;
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88 int kindEnd = value.indexOf(']', 1);
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89 if (value.charAt(0) == '[' && kindEnd != -1) {
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90 String kindStr = value.substring(1, kindEnd);
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91 value = value.substring(kindEnd + 1);
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92 if ("svn".equals(kindStr)) {
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93 kind = HgSubrepoLocation.Kind.SVN;
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94 } else if ("git".equals(kindStr)) {
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95 kind = HgSubrepoLocation.Kind.Git;
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96 }
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97 }
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98 // TODO respect paths mappings in config file
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99 HgSubrepoLocation loc = new HgSubrepoLocation(repo, key, value, kind, substate.get(key));
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100 res.add(loc);
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101 }
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102 return Arrays.asList(res.toArray(new HgSubrepoLocation[res.size()]));
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103 } finally {
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104 br.close();
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105 }
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106 }
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107
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108 private Map<String, String> readState(BufferedReader br) throws IOException {
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109 HashMap<String, String> rv = new HashMap<String, String>();
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110 try {
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111 String line;
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112 while ((line = br.readLine()) != null) {
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113 int sep = line.trim().indexOf(' ');
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114 if (sep != -1) {
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115 rv.put(line.substring(sep+1).trim(), line.substring(0, sep).trim());
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116 }
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117 }
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118 } finally {
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119 br.close();
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120 }
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121 return rv;
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122 }
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123
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124 public List<HgSubrepoLocation> all(/*int revision, or TIP|WC*/) {
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125 if (subRepos == null) {
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126 subRepos = readActualState();
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127 }
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128 return subRepos;
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129 }
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130 }