Mercurial > hg4j
annotate src/com/tmate/hgkit/ll/StatusCollector.java @ 57:8b0d6f1bd6b4
Local status is back
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Mon, 17 Jan 2011 05:54:25 +0100 |
parents | 576d6e8a09f6 |
children | b771e94a4f7c |
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1 /* |
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2 * Copyright (c) 2011 Artem Tikhomirov |
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3 */ |
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4 package com.tmate.hgkit.ll; |
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5 |
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6 import java.util.Collection; |
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7 import java.util.Collections; |
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8 import java.util.HashMap; |
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9 import java.util.LinkedHashMap; |
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10 import java.util.LinkedList; |
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11 import java.util.List; |
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12 import java.util.Map; |
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13 import java.util.TreeSet; |
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14 |
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15 /** |
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16 * RevisionWalker? |
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17 * @author artem |
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18 */ |
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19 public class StatusCollector { |
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20 |
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21 private final HgRepository repo; |
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22 private final Map<Integer, ManifestRevisionInspector> cache; // sparse array, in fact |
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23 |
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24 public StatusCollector(HgRepository hgRepo) { |
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25 this.repo = hgRepo; |
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26 cache = new HashMap<Integer, ManifestRevisionInspector>(); |
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27 ManifestRevisionInspector emptyFakeState = new ManifestRevisionInspector(-1, -1); |
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28 emptyFakeState.begin(-1, null); |
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29 emptyFakeState.end(-1); |
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30 cache.put(-1, emptyFakeState); |
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31 } |
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32 |
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33 private ManifestRevisionInspector get(int rev) { |
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34 ManifestRevisionInspector i = cache.get(rev); |
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35 if (i == null) { |
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36 i = new ManifestRevisionInspector(rev, rev); |
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37 cache.put(rev, i); |
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38 repo.getManifest().walk(rev, rev, i); |
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39 } |
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40 return i; |
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41 } |
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42 |
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43 // hg status --change <rev> |
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44 public void change(int rev, Inspector inspector) { |
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45 int[] parents = new int[2]; |
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46 repo.getChangelog().parents(rev, parents, null, null); |
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47 walk(parents[0], rev, inspector); |
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48 } |
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49 |
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50 // I assume revision numbers are the same for changelog and manifest - here |
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51 // user would like to pass changelog revision numbers, and I use them directly to walk manifest. |
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52 // if this assumption is wrong, fix this (lookup manifest revisions from changeset). |
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53 public void walk(int rev1, int rev2, Inspector inspector) { |
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54 if (rev1 == rev2) { |
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55 throw new IllegalArgumentException(); |
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56 } |
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57 // in fact, rev1 and rev2 are often next (or close) to each other, |
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58 // thus, we can optimize Manifest reads here (manifest.walk(rev1, rev2)) |
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59 |
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60 ManifestRevisionInspector r1, r2; |
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61 if (!cache.containsKey(rev1) && !cache.containsKey(rev2) && Math.abs(rev1 - rev2) < 5 /*subjective equivalent of 'close enough'*/) { |
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62 int minRev = rev1 < rev2 ? rev1 : rev2; |
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63 int maxRev = minRev == rev1 ? rev2 : rev1; |
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64 r1 = r2 = new ManifestRevisionInspector(minRev, maxRev); |
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65 for (int i = minRev; i <= maxRev; i++) { |
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66 cache.put(i, r1); |
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67 } |
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68 repo.getManifest().walk(minRev, maxRev, r1); |
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69 } else { |
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70 r1 = get(rev1); |
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71 r2 = get(rev2); |
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72 } |
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73 |
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74 TreeSet<String> r1Files = new TreeSet<String>(r1.files(rev1)); |
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75 for (String fname : r2.files(rev2)) { |
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76 if (r1Files.remove(fname)) { |
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77 Nodeid nidR1 = r1.nodeid(rev1, fname); |
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78 Nodeid nidR2 = r2.nodeid(rev2, fname); |
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79 String flagsR1 = r1.flags(rev1, fname); |
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80 String flagsR2 = r2.flags(rev2, fname); |
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81 if (nidR1.equals(nidR2) && ((flagsR2 == null && flagsR1 == null) || flagsR2.equals(flagsR1))) { |
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82 inspector.clean(fname); |
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83 } else { |
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84 inspector.modified(fname); |
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85 } |
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86 } else { |
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87 inspector.added(fname); |
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88 } |
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89 } |
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90 for (String left : r1Files) { |
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91 inspector.removed(left); |
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92 } |
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93 // inspector.done() if useful e.g. in UI client |
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94 } |
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95 |
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96 public Record status(int rev1, int rev2) { |
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97 Record rv = new Record(); |
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98 walk(rev1, rev2, rv); |
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99 return rv; |
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100 } |
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101 |
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102 public interface Inspector { |
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103 void modified(String fname); |
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104 void added(String fname); |
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105 void copied(String fnameOrigin, String fnameAdded); // if copied files of no interest, should delegate to self.added(fnameAdded); |
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106 void removed(String fname); |
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107 void clean(String fname); |
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108 void missing(String fname); // aka deleted (tracked by Hg, but not available in FS any more |
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109 void unknown(String fname); // not tracked |
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110 void ignored(String fname); |
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111 } |
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112 |
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113 // XXX for r1..r2 status, only modified, added, removed (and perhaps, clean) make sense |
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114 public static class Record implements Inspector { |
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115 private List<String> modified, added, removed, clean, missing, unknown, ignored; |
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116 private Map<String, String> copied; |
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117 |
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118 public List<String> getModified() { |
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119 return proper(modified); |
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120 } |
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121 |
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122 public List<String> getAdded() { |
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123 return proper(added); |
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124 } |
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125 |
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126 public List<String> getRemoved() { |
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127 return proper(removed); |
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128 } |
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129 |
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130 public Map<String,String> getCopied() { |
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131 if (copied == null) { |
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132 return Collections.emptyMap(); |
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133 } |
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134 return Collections.unmodifiableMap(copied); |
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135 } |
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136 |
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137 public List<String> getClean() { |
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138 return proper(clean); |
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139 } |
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140 |
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141 public List<String> getMissing() { |
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142 return proper(missing); |
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143 } |
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144 |
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145 public List<String> getUnknown() { |
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146 return proper(unknown); |
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147 } |
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148 |
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149 public List<String> getIgnored() { |
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150 return proper(ignored); |
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151 } |
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152 |
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153 private List<String> proper(List<String> l) { |
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154 if (l == null) { |
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155 return Collections.emptyList(); |
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156 } |
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157 return Collections.unmodifiableList(l); |
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158 } |
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159 |
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160 // |
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161 // |
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162 |
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163 public void modified(String fname) { |
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164 modified = doAdd(modified, fname); |
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165 } |
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166 |
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167 public void added(String fname) { |
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168 added = doAdd(added, fname); |
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169 } |
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170 |
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171 public void copied(String fnameOrigin, String fnameAdded) { |
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172 if (copied == null) { |
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173 copied = new LinkedHashMap<String, String>(); |
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174 } |
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175 copied.put(fnameOrigin, fnameAdded); |
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176 } |
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177 |
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178 public void removed(String fname) { |
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179 removed = doAdd(removed, fname); |
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180 } |
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181 |
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182 public void clean(String fname) { |
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183 clean = doAdd(clean, fname); |
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184 } |
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185 |
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186 public void missing(String fname) { |
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187 missing = doAdd(missing, fname); |
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188 } |
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189 |
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190 public void unknown(String fname) { |
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191 unknown = doAdd(unknown, fname); |
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192 } |
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193 |
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194 public void ignored(String fname) { |
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195 ignored = doAdd(ignored, fname); |
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196 } |
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197 |
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198 private static List<String> doAdd(List<String> l, String s) { |
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199 if (l == null) { |
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200 l = new LinkedList<String>(); |
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201 } |
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202 l.add(s); |
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203 return l; |
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204 } |
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205 } |
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206 |
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207 public /*XXX private, actually. Made public unless repo.statusLocal finds better place*/ static final class ManifestRevisionInspector implements HgManifest.Inspector { |
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208 private final HashMap<String, Nodeid>[] idsMap; |
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209 private final HashMap<String, String>[] flagsMap; |
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210 private final int baseRevision; |
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211 private int r = -1; // cursor |
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212 |
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213 /** |
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214 * [minRev, maxRev] |
56
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215 * [-1,-1] also accepted (for fake empty instance) |
55
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216 * @param minRev - inclusive |
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217 * @param maxRev - inclusive |
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218 */ |
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219 @SuppressWarnings("unchecked") |
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220 public ManifestRevisionInspector(int minRev, int maxRev) { |
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221 baseRevision = minRev; |
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222 int range = maxRev - minRev + 1; |
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223 idsMap = new HashMap[range]; |
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224 flagsMap = new HashMap[range]; |
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225 } |
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226 |
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227 public Collection<String> files(int rev) { |
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228 if (rev < baseRevision || rev >= baseRevision + idsMap.length) { |
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229 throw new IllegalArgumentException(); |
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230 } |
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231 return idsMap[rev - baseRevision].keySet(); |
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232 } |
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233 |
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234 public Nodeid nodeid(int rev, String fname) { |
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235 if (rev < baseRevision || rev >= baseRevision + idsMap.length) { |
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236 throw new IllegalArgumentException(); |
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237 } |
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238 return idsMap[rev - baseRevision].get(fname); |
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239 } |
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240 |
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241 public String flags(int rev, String fname) { |
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242 if (rev < baseRevision || rev >= baseRevision + idsMap.length) { |
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243 throw new IllegalArgumentException(); |
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244 } |
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245 return flagsMap[rev - baseRevision].get(fname); |
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246 } |
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247 |
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248 // |
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249 |
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250 public boolean next(Nodeid nid, String fname, String flags) { |
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251 idsMap[r].put(fname, nid); |
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252 flagsMap[r].put(fname, flags); |
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253 return true; |
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254 } |
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255 |
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256 public boolean end(int revision) { |
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257 assert revision == r + baseRevision; |
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258 r = -1; |
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259 return revision+1 < baseRevision + idsMap.length; |
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260 } |
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261 |
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262 public boolean begin(int revision, Nodeid nid) { |
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263 if (revision < baseRevision || revision >= baseRevision + idsMap.length) { |
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264 throw new IllegalArgumentException(); |
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265 } |
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266 r = revision - baseRevision; |
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267 idsMap[r] = new HashMap<String, Nodeid>(); |
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268 flagsMap[r] = new HashMap<String, String>(); |
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269 return true; |
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270 } |
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271 } |
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272 |
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273 } |