Mercurial > jhg
annotate src/org/tmatesoft/hg/repo/HgDirstate.java @ 280:35125450c804
Erroneous and slow status for working copies based on non-tip revision
| author | Artem Tikhomirov <tikhomirov.artem@gmail.com> | 
|---|---|
| date | Fri, 02 Sep 2011 13:40:09 +0200 | 
| parents | a6d19adc2636 | 
| children | 7232b94f2ae3 | 
| rev | line source | 
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changeset | 1 /* | 
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changeset | 2 * Copyright (c) 2010-2011 TMate Software Ltd | 
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changeset | 3 * | 
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changeset | 4 * This program is free software; you can redistribute it and/or modify | 
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changeset | 5 * it under the terms of the GNU General Public License as published by | 
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changeset | 6 * the Free Software Foundation; version 2 of the License. | 
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changeset | 7 * | 
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changeset | 8 * This program is distributed in the hope that it will be useful, | 
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changeset | 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 
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changeset | 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | 
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changeset | 11 * GNU General Public License for more details. | 
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changeset | 12 * | 
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changeset | 13 * For information on how to redistribute this software under | 
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changeset | 14 * the terms of a license other than GNU General Public License | 
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changeset | 15 * contact TMate Software at support@hg4j.com | 
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changeset | 16 */ | 
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changeset | 17 package org.tmatesoft.hg.repo; | 
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changeset | 18 | 
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HgRepository.getWorkingCopyBranchName() to retrieve branch associated with working directory
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changeset | 19 import java.io.BufferedReader; | 
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changeset | 20 import java.io.File; | 
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changeset | 21 import java.io.FileReader; | 
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changeset | 22 import java.io.IOException; | 
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changeset | 23 import java.util.Collections; | 
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changeset | 24 import java.util.LinkedHashMap; | 
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changeset | 25 import java.util.Map; | 
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changeset | 26 import java.util.TreeSet; | 
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changeset | 27 | 
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changeset | 28 import org.tmatesoft.hg.core.HgBadStateException; | 
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changeset | 29 import org.tmatesoft.hg.core.Nodeid; | 
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changeset | 30 import org.tmatesoft.hg.internal.DataAccess; | 
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changeset | 31 import org.tmatesoft.hg.util.Path; | 
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changeset | 32 | 
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changeset | 33 | 
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changeset | 34 /** | 
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changeset | 35 * @see http://mercurial.selenic.com/wiki/DirState | 
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changeset | 36 * @see http://mercurial.selenic.com/wiki/FileFormats#dirstate | 
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changeset | 37 * | 
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changeset | 38 * @author Artem Tikhomirov | 
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changeset | 39 * @author TMate Software Ltd. | 
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changeset | 40 */ | 
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changeset | 41 class HgDirstate /* XXX RepoChangeListener */{ | 
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changeset | 42 | 
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changeset | 43 private final HgRepository repo; | 
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changeset | 44 private final File dirstateFile; | 
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changeset | 45 // deliberate String, not Path as it seems useless to keep Path here | 
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changeset | 46 private Map<String, Record> normal; | 
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changeset | 47 private Map<String, Record> added; | 
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changeset | 48 private Map<String, Record> removed; | 
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changeset | 49 private Map<String, Record> merged; | 
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changeset | 50 private Nodeid p1, p2; | 
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changeset | 51 private String currentBranch; | 
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changeset | 52 | 
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changeset | 53 public HgDirstate(HgRepository hgRepo, File dirstate) { | 
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changeset | 54 repo = hgRepo; | 
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changeset | 55 dirstateFile = dirstate; // XXX decide whether file names shall be kept local to reader (see #branches()) or passed from outside | 
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changeset | 56 } | 
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changeset | 57 | 
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changeset | 58 private void read() { | 
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changeset | 59 normal = added = removed = merged = Collections.<String, Record>emptyMap(); | 
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changeset | 60 if (dirstateFile == null || !dirstateFile.exists()) { | 
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changeset | 61 return; | 
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changeset | 62 } | 
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changeset | 63 DataAccess da = repo.getDataAccess().create(dirstateFile); | 
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changeset | 64 if (da.isEmpty()) { | 
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changeset | 65 return; | 
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changeset | 66 } | 
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changeset | 67 // not sure linked is really needed here, just for ease of debug | 
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changeset | 68 normal = new LinkedHashMap<String, Record>(); | 
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changeset | 69 added = new LinkedHashMap<String, Record>(); | 
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changeset | 70 removed = new LinkedHashMap<String, Record>(); | 
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changeset | 71 merged = new LinkedHashMap<String, Record>(); | 
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changeset | 72 try { | 
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changeset | 73 byte[] parents = new byte[40]; | 
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changeset | 74 da.readBytes(parents, 0, 40); | 
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changeset | 75 p1 = Nodeid.fromBinary(parents, 0); | 
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changeset | 76 p2 = Nodeid.fromBinary(parents, 20); | 
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changeset | 77 parents = null; | 
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changeset | 78 // hg init; hg up produces an empty repository where dirstate has parents (40 bytes) only | 
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changeset | 79 while (!da.isEmpty()) { | 
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changeset | 80 final byte state = da.readByte(); | 
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changeset | 81 final int fmode = da.readInt(); | 
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changeset | 82 final int size = da.readInt(); | 
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changeset | 83 final int time = da.readInt(); | 
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changeset | 84 final int nameLen = da.readInt(); | 
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changeset | 85 String fn1 = null, fn2 = null; | 
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changeset | 86 byte[] name = new byte[nameLen]; | 
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changeset | 87 da.readBytes(name, 0, nameLen); | 
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changeset | 88 for (int i = 0; i < nameLen; i++) { | 
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changeset | 89 if (name[i] == 0) { | 
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changeset | 90 fn1 = new String(name, 0, i, "UTF-8"); // XXX unclear from documentation what encoding is used there | 
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changeset | 91 fn2 = new String(name, i+1, nameLen - i - 1, "UTF-8"); // need to check with different system codepages | 
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changeset | 92 break; | 
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changeset | 93 } | 
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changeset | 94 } | 
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changeset | 95 if (fn1 == null) { | 
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changeset | 96 fn1 = new String(name); | 
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changeset | 97 } | 
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changeset | 98 Record r = new Record(fmode, size, time, fn1, fn2); | 
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changeset | 99 if (state == 'n') { | 
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changeset | 100 normal.put(r.name1, r); | 
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changeset | 101 } else if (state == 'a') { | 
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changeset | 102 added.put(r.name1, r); | 
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changeset | 103 } else if (state == 'r') { | 
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changeset | 104 removed.put(r.name1, r); | 
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changeset | 105 } else if (state == 'm') { | 
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changeset | 106 merged.put(r.name1, r); | 
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changeset | 107 } else { | 
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changeset | 108 // FIXME log error? | 
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changeset | 109 } | 
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changeset | 110 } | 
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changeset | 111 } catch (IOException ex) { | 
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changeset | 112 ex.printStackTrace(); // FIXME log error, clean dirstate? | 
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changeset | 113 } finally { | 
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changeset | 114 da.done(); | 
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changeset | 115 } | 
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changeset | 116 } | 
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changeset | 117 | 
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changeset | 118 // do not read whole dirstate if all we need is WC parent information | 
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changeset | 119 private void readParents() { | 
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changeset | 120 if (dirstateFile == null || !dirstateFile.exists()) { | 
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changeset | 121 return; | 
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changeset | 122 } | 
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changeset | 123 DataAccess da = repo.getDataAccess().create(dirstateFile); | 
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changeset | 124 if (da.isEmpty()) { | 
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changeset | 125 return; | 
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changeset | 126 } | 
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changeset | 127 try { | 
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changeset | 128 byte[] parents = new byte[40]; | 
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changeset | 129 da.readBytes(parents, 0, 40); | 
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changeset | 130 p1 = Nodeid.fromBinary(parents, 0); | 
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changeset | 131 p2 = Nodeid.fromBinary(parents, 20); | 
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changeset | 132 parents = null; | 
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changeset | 133 } catch (IOException ex) { | 
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changeset | 134 throw new HgBadStateException(ex); // XXX in fact, our exception is not the best solution here. | 
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changeset | 135 } finally { | 
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changeset | 136 da.done(); | 
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changeset | 137 } | 
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changeset | 138 } | 
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changeset | 139 | 
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changeset | 140 /** | 
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changeset | 141 * @return array of length 2 with working copy parents, non null. | 
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changeset | 142 */ | 
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changeset | 143 public Nodeid[] parents() { | 
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changeset | 144 if (p1 == null) { | 
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changeset | 145 readParents(); | 
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changeset | 146 } | 
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changeset | 147 Nodeid[] rv = new Nodeid[2]; | 
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changeset | 148 rv[0] = p1; | 
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changeset | 149 rv[1] = p2; | 
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changeset | 150 return rv; | 
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changeset | 151 } | 
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changeset | 152 | 
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changeset | 153 /** | 
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changeset | 154 * @return branch associated with the working directory | 
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changeset | 155 */ | 
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changeset | 156 public String branch() { | 
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changeset | 157 if (currentBranch == null) { | 
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changeset | 158 currentBranch = HgRepository.DEFAULT_BRANCH_NAME; | 
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changeset | 159 File branchFile = new File(repo.getRepositoryRoot(), "branch"); | 
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changeset | 160 if (branchFile.exists()) { | 
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changeset | 161 try { | 
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changeset | 162 BufferedReader r = new BufferedReader(new FileReader(branchFile)); | 
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changeset | 163 String b = r.readLine(); | 
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changeset | 164 if (b != null) { | 
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changeset | 165 b = b.trim().intern(); | 
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changeset | 166 } | 
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changeset | 167 currentBranch = b == null || b.length() == 0 ? HgRepository.DEFAULT_BRANCH_NAME : b; | 
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changeset | 168 r.close(); | 
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changeset | 169 } catch (IOException ex) { | 
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changeset | 170 ex.printStackTrace(); // XXX log verbose debug, exception might be legal here (i.e. FileNotFound) | 
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changeset | 171 // IGNORE | 
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changeset | 172 } | 
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changeset | 173 } | 
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changeset | 174 } | 
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changeset | 175 return currentBranch; | 
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changeset | 176 } | 
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changeset | 177 | 
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changeset | 178 // new, modifiable collection | 
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changeset | 179 /*package-local*/ TreeSet<String> all() { | 
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changeset | 180 read(); | 
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changeset | 181 TreeSet<String> rv = new TreeSet<String>(); | 
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changeset | 182 @SuppressWarnings("unchecked") | 
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changeset | 183 Map<String, Record>[] all = new Map[] { normal, added, removed, merged }; | 
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changeset | 184 for (int i = 0; i < all.length; i++) { | 
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changeset | 185 for (Record r : all[i].values()) { | 
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changeset | 186 rv.add(r.name1); | 
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changeset | 187 } | 
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changeset | 188 } | 
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changeset | 189 return rv; | 
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changeset | 190 } | 
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changeset | 191 | 
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changeset | 192 /*package-local*/ Record checkNormal(Path fname) { | 
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changeset | 193 return normal.get(fname.toString()); | 
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changeset | 194 } | 
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changeset | 195 | 
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changeset | 196 /*package-local*/ Record checkAdded(Path fname) { | 
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changeset | 197 return added.get(fname.toString()); | 
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changeset | 198 } | 
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changeset | 199 /*package-local*/ Record checkRemoved(Path fname) { | 
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changeset | 200 return removed.get(fname.toString()); | 
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changeset | 201 } | 
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changeset | 202 /*package-local*/ Record checkRemoved(String fname) { | 
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changeset | 203 return removed.get(fname); | 
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changeset | 204 } | 
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changeset | 205 /*package-local*/ Record checkMerged(Path fname) { | 
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changeset | 206 return merged.get(fname.toString()); | 
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changeset | 207 } | 
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changeset | 208 | 
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changeset | 209 | 
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changeset | 210 | 
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changeset | 211 | 
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changeset | 212 /*package-local*/ void dump() { | 
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changeset | 213 read(); | 
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changeset | 214 @SuppressWarnings("unchecked") | 
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changeset | 215 Map<String, Record>[] all = new Map[] { normal, added, removed, merged }; | 
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changeset | 216 char[] x = new char[] {'n', 'a', 'r', 'm' }; | 
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changeset | 217 for (int i = 0; i < all.length; i++) { | 
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changeset | 218 for (Record r : all[i].values()) { | 
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changeset | 219 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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changeset | 220 if (r.name2 != null) { | 
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changeset | 221 System.out.printf(" --> %s", r.name2); | 
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changeset | 222 } | 
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changeset | 223 System.out.println(); | 
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changeset | 224 } | 
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changeset | 225 System.out.println(); | 
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changeset | 226 } | 
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changeset | 227 } | 
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changeset | 228 | 
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changeset | 229 /*package-local*/ static class Record { | 
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changeset | 230 final int mode; | 
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changeset | 231 // it seems Dirstate keeps local file size (i.e. that with any filters already applied). | 
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changeset | 232 // Thus, can't compare directly to HgDataFile.length() | 
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changeset | 233 final int size; | 
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changeset | 234 final int time; | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 235 final String name1; | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 236 final String name2; | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 237 | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 238 public Record(int fmode, int fsize, int ftime, String name1, String name2) { | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 239 mode = fmode; | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 240 size = fsize; | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 241 time = ftime; | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 242 this.name1 = name1; | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 243 this.name2 = name2; | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 244 | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 245 } | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 246 } | 
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Dirstate parsing. DataAccess refactored to allow reuse and control over constants
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changeset | 247 } | 
