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annotate src/org/tmatesoft/hg/core/HgInitCommand.java @ 655:bcbcc318f250

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Performance: reuse unzip output buffer
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 04 Jul 2013 18:36:38 +0200
parents 4a0bab2c6da1
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1 /*
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2 * Copyright (c) 2013 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.core;
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18
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19 import static org.tmatesoft.hg.internal.RequiresFile.*;
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20
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21 import java.io.File;
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22
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23 import org.tmatesoft.hg.internal.RepoInitializer;
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24 import org.tmatesoft.hg.repo.HgLookup;
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25 import org.tmatesoft.hg.repo.HgRepository;
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26 import org.tmatesoft.hg.util.CancelledException;
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27
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28 /**
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29 * Initialize empty local repository.
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30 * <p>
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31 * Two predefined alternatives are available, {@link #revlogV0() old} and {@link #revlogV1() new} mercurial format respectively.
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32 * <p>
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33 * Specific requirements may be turned off/on as needed if you know what you're doing.
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34 *
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35 * @see http://mercurial.selenic.com/wiki/RequiresFile
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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 HgInitCommand extends HgAbstractCommand<HgInitCommand> {
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40 private static final int V1_DEFAULT = REVLOGV1 | STORE | FNCACHE | DOTENCODE;
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41
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42 private final HgLookup hgLookup;
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43 private File location;
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44 private int requiresFlags;
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45
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46 public HgInitCommand() {
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47 this(null);
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48 }
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49
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50 public HgInitCommand(HgLookup lookupEnv) {
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51 hgLookup = lookupEnv;
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52 requiresFlags = V1_DEFAULT;
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53 }
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54
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55 public HgInitCommand location(File repoLoc) {
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56 location = repoLoc;
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57 return this;
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58 }
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59
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60 public HgInitCommand revlogV0() {
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61 requiresFlags = REVLOGV0;
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62 return this;
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63 }
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64
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65 public HgInitCommand revlogV1() {
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66 requiresFlags = V1_DEFAULT;
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67 return this;
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68 }
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69
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70 public HgInitCommand store(boolean enable) {
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71 return switchFlag(STORE, enable);
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72 }
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73
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74 public HgInitCommand fncache(boolean enable) {
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75 return switchFlag(FNCACHE, enable);
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76 }
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77
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78 public HgInitCommand dotencode(boolean enable) {
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79 return switchFlag(DOTENCODE, enable);
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80 }
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81
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82 public HgRepository execute() throws HgRepositoryNotFoundException, HgException, CancelledException {
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83 if (location == null) {
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84 throw new IllegalArgumentException();
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85 }
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86 File repoDir;
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87 if (".hg".equals(location.getName())) {
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88 repoDir = location;
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89 } else {
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90 repoDir = new File(location, ".hg");
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91 }
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92 new RepoInitializer().setRequires(requiresFlags).initEmptyRepository(repoDir);
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93 return getNewRepository();
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94 }
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95
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96 public HgRepository getNewRepository() throws HgRepositoryNotFoundException {
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97 HgLookup l = hgLookup == null ? new HgLookup() : hgLookup;
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98 return l.detect(location);
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99 }
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100
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101 private HgInitCommand switchFlag(int flag, boolean enable) {
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102 if (enable) {
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103 requiresFlags |= flag;
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104 } else {
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105 requiresFlags &= ~flag;
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106 }
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107 return this;
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108 }
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109 }