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annotate src/com/tmate/hgkit/ll/LocalHgRepo.java @ 3:24bb4f365164

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Rudimentary log functionality with basic infrastructure is in place
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 20 Dec 2010 02:50:36 +0100
parents a3576694a4d1
children a78c980749e3
rev   line source
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1 /**
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2 * Copyright (c) 2010 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.io.File;
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7 import java.io.IOException;
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8 import java.lang.ref.SoftReference;
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9 import java.util.HashMap;
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11 /**
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12 * @author artem
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13 */
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14 public class LocalHgRepo extends HgRepository {
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15
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16 private File repoDir;
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17 private final String repoLocation;
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18
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19 public LocalHgRepo(String repositoryPath) {
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20 setInvalid(true);
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21 repoLocation = repositoryPath;
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22 }
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24 public LocalHgRepo(File repositoryRoot) throws IOException {
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25 assert ".hg".equals(repositoryRoot.getName()) && repositoryRoot.isDirectory();
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26 setInvalid(false);
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27 repoDir = repositoryRoot;
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28 repoLocation = repositoryRoot.getParentFile().getCanonicalPath();
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29 }
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30
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31 @Override
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32 public String getLocation() {
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33 return repoLocation;
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34 }
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35
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36 private final HashMap<String, SoftReference<RevlogStream>> streamsCache = new HashMap<String, SoftReference<RevlogStream>>();
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37
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38 /**
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39 * path - repository storage path (i.e. one usually with .i or .d)
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40 */
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41 @Override
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42 protected RevlogStream resolve(String path) {
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43 final SoftReference<RevlogStream> ref = streamsCache.get(path);
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44 RevlogStream cached = ref == null ? null : ref.get();
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45 if (cached != null) {
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46 return cached;
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47 }
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48 File f = new File(repoDir, path);
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49 if (f.exists()) {
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50 RevlogStream s = new RevlogStream(f);
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51 streamsCache.put(path, new SoftReference<RevlogStream>(s));
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52 return s;
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53 }
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54 return null;
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55 }
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56
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57 @Override
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58 public HgDataFile getFileNode(String path) {
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59 String nPath = normalize(path);
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60 String storagePath = toStoragePath(nPath);
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61 RevlogStream content = resolve(storagePath);
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62 // XXX no content when no file? or HgDataFile.exists() to detect that? How about files that were removed in previous releases?
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63 return new HgDataFile(this, nPath, content);
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64 }
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65
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66 // FIXME much more to be done, see store.py:_hybridencode
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67 private static String toStoragePath(String path) {
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68 // XXX works for lowercase names only
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69 return "store/data/" + path.replace('\\', '/') + ".i";
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70 }
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71
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72 private static String normalize(String path) {
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73 return path.replace('\\', '/');
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74 }
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75 }