Mercurial > jhg
annotate src/org/tmatesoft/hg/internal/SubrepoManager.java @ 354:5f9073eabf06
Propagate errors with exceptions up to a end client
| author | Artem Tikhomirov <tikhomirov.artem@gmail.com> | 
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| date | Thu, 01 Dec 2011 05:21:40 +0100 | 
| parents | a0864b2892cd | 
| children | 9c9c442b5f2e | 
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changeset | 1 /* | 
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changeset | 2 * Copyright (c) 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.internal; | 
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changeset | 18 | 
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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.Arrays; | 
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changeset | 24 import java.util.Collections; | 
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changeset | 25 import java.util.HashMap; | 
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changeset | 26 import java.util.LinkedList; | 
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changeset | 27 import java.util.List; | 
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changeset | 28 import java.util.Map; | 
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changeset | 29 | 
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changeset | 30 import org.tmatesoft.hg.core.HgInvalidControlFileException; | 
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changeset | 31 import org.tmatesoft.hg.repo.HgRepository; | 
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changeset | 32 import org.tmatesoft.hg.repo.HgSubrepoLocation; | 
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changeset | 33 | 
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changeset | 34 /** | 
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changeset | 35 * | 
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changeset | 36 * @author Artem Tikhomirov | 
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changeset | 37 * @author TMate Software Ltd. | 
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changeset | 38 */ | 
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changeset | 39 public class SubrepoManager /* XXX RepoChangeNotifier, RepoChangeListener */{ | 
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changeset | 40 | 
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changeset | 41 private final HgRepository repo; | 
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changeset | 42 private List<HgSubrepoLocation> subRepos; | 
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changeset | 43 | 
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changeset | 44 public SubrepoManager(HgRepository hgRepo) { | 
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changeset | 45 assert hgRepo != null; | 
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changeset | 46 repo = hgRepo; | 
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changeset | 47 } | 
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changeset | 48 | 
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changeset | 49 private List<HgSubrepoLocation> readActualState() throws HgInvalidControlFileException { | 
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changeset | 50 File hgsubFile = new File(repo.getWorkingDir(), ".hgsub"); | 
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changeset | 51 if (!hgsubFile.canRead()) { | 
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changeset | 52 return Collections.emptyList(); | 
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changeset | 53 } | 
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changeset | 54 Map<String, String> state; // path -> revision | 
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changeset | 55 File hgstateFile = null; | 
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changeset | 56 try { | 
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changeset | 57 hgstateFile = new File(repo.getWorkingDir(), ".hgsubstate"); | 
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changeset | 58 if (hgstateFile.canRead()) { | 
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changeset | 59 state = readState(new BufferedReader(new FileReader(hgstateFile))); | 
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changeset | 60 } else { | 
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changeset | 61 state = Collections.emptyMap(); | 
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changeset | 62 } | 
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changeset | 63 } catch (IOException ex) { | 
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changeset | 64 throw new HgInvalidControlFileException("Subrepo state read failed", ex, hgstateFile); | 
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changeset | 65 } | 
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changeset | 66 try { | 
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changeset | 67 BufferedReader br = new BufferedReader(new FileReader(hgsubFile)); | 
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changeset | 68 return readConfig(br, state); | 
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changeset | 69 } catch (IOException ex) { | 
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changeset | 70 throw new HgInvalidControlFileException("Subrepo state read failed", ex, hgsubFile); | 
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changeset | 71 } | 
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changeset | 72 } | 
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changeset | 73 | 
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changeset | 74 private List<HgSubrepoLocation> readConfig(BufferedReader br, Map<String, String> substate) throws IOException { | 
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changeset | 75 try { | 
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changeset | 76 String line; | 
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changeset | 77 LinkedList<HgSubrepoLocation> res = new LinkedList<HgSubrepoLocation>(); | 
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changeset | 78 while ((line = br.readLine()) != null) { | 
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changeset | 79 int sep = line.indexOf('='); | 
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changeset | 80 if (sep == -1) { | 
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changeset | 81 continue; | 
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changeset | 82 } | 
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changeset | 83 // since both key and value are referenced from HgSubrepoLocation, doesn't make sense | 
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changeset | 84 // to have separate String instances (new String(line.substring())) | 
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changeset | 85 String key = line.substring(0, sep).trim(); | 
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changeset | 86 String value = line.substring(sep + 1).trim(); | 
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changeset | 87 if (value.length() == 0) { | 
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changeset | 88 // XXX log bad line? | 
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changeset | 89 continue; | 
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changeset | 90 } | 
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changeset | 91 HgSubrepoLocation.Kind kind = HgSubrepoLocation.Kind.Hg; | 
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changeset | 92 int kindEnd = value.indexOf(']', 1); | 
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changeset | 93 if (value.charAt(0) == '[' && kindEnd != -1) { | 
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changeset | 94 String kindStr = value.substring(1, kindEnd); | 
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changeset | 95 value = value.substring(kindEnd + 1); | 
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changeset | 96 if ("svn".equals(kindStr)) { | 
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changeset | 97 kind = HgSubrepoLocation.Kind.SVN; | 
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changeset | 98 } else if ("git".equals(kindStr)) { | 
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changeset | 99 kind = HgSubrepoLocation.Kind.Git; | 
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changeset | 100 } | 
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changeset | 101 } | 
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changeset | 102 // TODO respect paths mappings in config file | 
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changeset | 103 HgSubrepoLocation loc = new HgSubrepoLocation(repo, key, value, kind, substate.get(key)); | 
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changeset | 104 res.add(loc); | 
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changeset | 105 } | 
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changeset | 106 return Arrays.asList(res.toArray(new HgSubrepoLocation[res.size()])); | 
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changeset | 107 } finally { | 
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changeset | 108 br.close(); | 
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changeset | 109 } | 
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changeset | 110 } | 
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changeset | 111 | 
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changeset | 112 private Map<String, String> readState(BufferedReader br) throws IOException { | 
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changeset | 113 HashMap<String, String> rv = new HashMap<String, String>(); | 
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changeset | 114 try { | 
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changeset | 115 String line; | 
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changeset | 116 while ((line = br.readLine()) != null) { | 
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changeset | 117 int sep = line.trim().indexOf(' '); | 
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changeset | 118 if (sep != -1) { | 
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changeset | 119 rv.put(line.substring(sep+1).trim(), line.substring(0, sep).trim()); | 
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changeset | 120 } | 
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changeset | 121 } | 
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changeset | 122 } finally { | 
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changeset | 123 br.close(); | 
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changeset | 124 } | 
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changeset | 125 return rv; | 
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changeset | 126 } | 
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changeset | 127 | 
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changeset | 128 /*public to allow access from HgRepository, otherwise package-local*/ | 
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changeset | 129 public void read() throws HgInvalidControlFileException { | 
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changeset | 130 subRepos = readActualState(); | 
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changeset | 131 } | 
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changeset | 132 | 
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changeset | 133 public List<HgSubrepoLocation> all(/*int revision, or TIP|WC*/) { | 
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changeset | 134 assert subRepos != null; | 
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changeset | 135 return subRepos; | 
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changeset | 136 } | 
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changeset | 137 } | 
