Mercurial > jhg

annotate src/org/tmatesoft/hg/repo/HgDirstate.java @ 176:a8df7162ec75

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Extracting complete branch using remote between call to detect incoming changes is done. Arguments reorderd in remote repo to better match Hg server ideology, not my mental convenience
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Sat, 02 Apr 2011 03:01:14 +0200
parents 8248aae33f7d
children 0fd10e5016dd
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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19 import java.io.File;
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20 import java.io.IOException;
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21 import java.util.Collections;
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22 import java.util.LinkedHashMap;
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23 import java.util.Map;
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24 import java.util.TreeSet;
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26 import org.tmatesoft.hg.internal.DataAccess;
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27 import org.tmatesoft.hg.internal.DataAccessProvider;
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28 import org.tmatesoft.hg.util.Path;
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29
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31 /**
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32 * @see http://mercurial.selenic.com/wiki/DirState
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33 * @see http://mercurial.selenic.com/wiki/FileFormats#dirstate
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34 *
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35 * @author Artem Tikhomirov
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36 * @author TMate Software Ltd.
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37 */
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38 class HgDirstate {
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39
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40 private final DataAccessProvider accessProvider;
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41 private final File dirstateFile;
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42 // deliberate String, not Path as it seems useless to keep Path here
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43 private Map<String, Record> normal;
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44 private Map<String, Record> added;
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45 private Map<String, Record> removed;
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46 private Map<String, Record> merged;
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47
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48 /*package-local*/ HgDirstate() {
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49 // empty instance
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50 accessProvider = null;
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51 dirstateFile = null;
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52 }
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54 public HgDirstate(DataAccessProvider dap, File dirstate) {
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55 accessProvider = dap;
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56 dirstateFile = dirstate;
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57 }
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59 private void read() {
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60 normal = added = removed = merged = Collections.<String, Record>emptyMap();
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61 if (dirstateFile == null || !dirstateFile.exists()) {
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62 return;
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63 }
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64 DataAccess da = accessProvider.create(dirstateFile);
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65 if (da.isEmpty()) {
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66 return;
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67 }
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68 // not sure linked is really needed here, just for ease of debug
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69 normal = new LinkedHashMap<String, Record>();
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70 added = new LinkedHashMap<String, Record>();
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71 removed = new LinkedHashMap<String, Record>();
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72 merged = new LinkedHashMap<String, Record>();
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73 try {
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74 // XXX skip(40) if we don't need these?
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75 byte[] parents = new byte[40];
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76 da.readBytes(parents, 0, 40);
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77 parents = null;
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78 do {
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79 final byte state = da.readByte();
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80 final int fmode = da.readInt();
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81 final int size = da.readInt();
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82 final int time = da.readInt();
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83 final int nameLen = da.readInt();
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84 String fn1 = null, fn2 = null;
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85 byte[] name = new byte[nameLen];
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86 da.readBytes(name, 0, nameLen);
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87 for (int i = 0; i < nameLen; i++) {
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88 if (name[i] == 0) {
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89 fn1 = new String(name, 0, i, "UTF-8"); // XXX unclear from documentation what encoding is used there
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90 fn2 = new String(name, i+1, nameLen - i - 1, "UTF-8"); // need to check with different system codepages
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91 break;
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92 }
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93 }
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94 if (fn1 == null) {
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95 fn1 = new String(name);
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96 }
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97 Record r = new Record(fmode, size, time, fn1, fn2);
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98 if (state == 'n') {
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99 normal.put(r.name1, r);
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100 } else if (state == 'a') {
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101 added.put(r.name1, r);
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102 } else if (state == 'r') {
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103 removed.put(r.name1, r);
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104 } else if (state == 'm') {
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105 merged.put(r.name1, r);
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106 } else {
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107 // FIXME log error?
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108 }
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109 } while (!da.isEmpty());
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110 } catch (IOException ex) {
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111 ex.printStackTrace(); // FIXME log error, clean dirstate?
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112 } finally {
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113 da.done();
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114 }
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115 }
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116
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117 // new, modifiable collection
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118 /*package-local*/ TreeSet<String> all() {
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119 read();
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120 TreeSet<String> rv = new TreeSet<String>();
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121 @SuppressWarnings("unchecked")
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122 Map<String, Record>[] all = new Map[] { normal, added, removed, merged };
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123 for (int i = 0; i < all.length; i++) {
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124 for (Record r : all[i].values()) {
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125 rv.add(r.name1);
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126 }
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127 }
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128 return rv;
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129 }
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130
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131 /*package-local*/ Record checkNormal(Path fname) {
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132 return normal.get(fname.toString());
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133 }
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134
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135 /*package-local*/ Record checkAdded(Path fname) {
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136 return added.get(fname.toString());
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137 }
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138 /*package-local*/ Record checkRemoved(Path fname) {
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139 return removed.get(fname.toString());
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140 }
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141 /*package-local*/ Record checkRemoved(String fname) {
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142 return removed.get(fname);
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143 }
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144 /*package-local*/ Record checkMerged(Path fname) {
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145 return merged.get(fname.toString());
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146 }
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147
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148
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149
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150
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151 /*package-local*/ void dump() {
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152 read();
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153 @SuppressWarnings("unchecked")
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154 Map<String, Record>[] all = new Map[] { normal, added, removed, merged };
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155 char[] x = new char[] {'n', 'a', 'r', 'm' };
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156 for (int i = 0; i < all.length; i++) {
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157 for (Record r : all[i].values()) {
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158 System.out.printf("%c %3o%6d %30tc\t\t%s", x[i], r.mode, r.size, (long) r.time * 1000, r.name1);
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159 if (r.name2 != null) {
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160 System.out.printf(" --> %s", r.name2);
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161 }
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162 System.out.println();
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163 }
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164 System.out.println();
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165 }
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166 }
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167
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168 /*package-local*/ static class Record {
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169 final int mode;
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170 final int size;
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171 final int time;
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172 final String name1;
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173 final String name2;
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174
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175 public Record(int fmode, int fsize, int ftime, String name1, String name2) {
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176 mode = fmode;
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177 size = fsize;
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178 time = ftime;
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179 this.name1 = name1;
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180 this.name2 = name2;
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181
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182 }
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183 }
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184 }