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annotate src/org/tmatesoft/hg/repo/HgLookup.java @ 158:b413b16d10a5

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Integer offsets and file length explictly, rather than casts throughout code. Inflater may benefit from total length hint, but shall calculate it by its own if needed
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 09 Mar 2011 13:16:37 +0100
parents 305ee74c0aa6
children 8c8e3f372fa1
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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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22 import org.tmatesoft.hg.core.HgException;
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23
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24 /**
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25 * Utility methods to find Mercurial repository at a given location
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26 *
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27 * @author Artem Tikhomirov
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28 * @author TMate Software Ltd.
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29 */
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30 public class HgLookup {
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32 public HgRepository detectFromWorkingDir() throws HgException {
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33 return detect(System.getProperty("user.dir"));
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34 }
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35
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36 public HgRepository detect(String location) throws HgException {
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37 return detect(new File(location));
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38 }
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39
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40 // look up in specified location and above
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41 public HgRepository detect(File location) throws HgException {
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42 File dir = location.getAbsoluteFile();
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43 File repository;
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44 do {
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45 repository = new File(dir, ".hg");
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46 if (repository.exists() && repository.isDirectory()) {
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47 break;
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48 }
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49 repository = null;
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50 dir = dir.getParentFile();
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51
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52 } while(dir != null);
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53 if (repository == null) {
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54 // return invalid repository
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55 return new HgRepository(location.getPath());
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56 }
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57 try {
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58 String repoPath = repository.getParentFile().getCanonicalPath();
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59 return new HgRepository(repoPath, repository);
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60 } catch (IOException ex) {
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61 throw new HgException(location.toString(), ex);
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62 }
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63 }
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64 }