Mercurial > hg4j

annotate src/org/tmatesoft/hg/repo/HgLookup.java @ 169:8c8e3f372fa1

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Towards initial clone: refactor HgBundle to provide slightly higher-level structure of the bundle
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 23 Mar 2011 14:13:11 +0100
parents 305ee74c0aa6
children 71ddbf8603e8
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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18
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19 import java.io.File;
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20 import java.io.IOException;
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21
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22 import org.tmatesoft.hg.core.HgException;
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23 import org.tmatesoft.hg.internal.DataAccessProvider;
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24
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25 /**
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26 * Utility methods to find Mercurial repository at a given location
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27 *
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28 * @author Artem Tikhomirov
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29 * @author TMate Software Ltd.
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30 */
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31 public class HgLookup {
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32
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33 public HgRepository detectFromWorkingDir() throws HgException {
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34 return detect(System.getProperty("user.dir"));
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35 }
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36
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37 public HgRepository detect(String location) throws HgException {
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38 return detect(new File(location));
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39 }
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40
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41 // look up in specified location and above
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42 public HgRepository detect(File location) throws HgException {
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43 File dir = location.getAbsoluteFile();
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44 File repository;
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45 do {
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46 repository = new File(dir, ".hg");
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47 if (repository.exists() && repository.isDirectory()) {
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48 break;
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49 }
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50 repository = null;
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51 dir = dir.getParentFile();
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52
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53 } while(dir != null);
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54 if (repository == null) {
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55 // return invalid repository
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56 return new HgRepository(location.getPath());
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57 }
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58 try {
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59 String repoPath = repository.getParentFile().getCanonicalPath();
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60 return new HgRepository(repoPath, repository);
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61 } catch (IOException ex) {
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62 throw new HgException(location.toString(), ex);
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63 }
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64 }
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66 public HgBundle loadBundle(File location) throws HgException {
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67 if (location == null || !location.canRead()) {
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68 throw new IllegalArgumentException();
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69 }
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70 return new HgBundle(new DataAccessProvider(), location);
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71 }
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72 }