Mercurial > jhg

annotate src/org/tmatesoft/hg/internal/BundleSerializer.java @ 694:7efabe0cddcf

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Speed up (a) file rename history to minimize file reads; (b) file.isCopy(int) to read metadata for few revisions at once (use pattern assumes earlier revisions are likely to be queried, too); (c) HgIgnore.isIgnored by caching matched initial fragments (to substitute more expensive Matcher.matches with cheaper HashMap.contains)
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 05 Aug 2013 17:42:10 +0200
parents 545b1d4cc11d
children
rev   line source
673
545b1d4cc11d Refactor HgBundle.GroupElement (clear experimental mark), resolve few technical debt issues
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1 /*
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2 * Copyright (c) 2013 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.
545b1d4cc11d Refactor HgBundle.GroupElement (clear experimental mark), resolve few technical debt issues
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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
545b1d4cc11d Refactor HgBundle.GroupElement (clear experimental mark), resolve few technical debt issues
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
545b1d4cc11d Refactor HgBundle.GroupElement (clear experimental mark), resolve few technical debt issues
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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.internal;
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18
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19 import java.io.File;
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20 import java.io.FileInputStream;
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21 import java.io.IOException;
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22
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23 import org.tmatesoft.hg.core.HgIOException;
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24 import org.tmatesoft.hg.core.SessionContext;
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25 import org.tmatesoft.hg.repo.HgBundle;
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26 import org.tmatesoft.hg.repo.HgInternals;
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27 import org.tmatesoft.hg.repo.HgRuntimeException;
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28 import org.tmatesoft.hg.util.LogFacility;
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29
545b1d4cc11d Refactor HgBundle.GroupElement (clear experimental mark), resolve few technical debt issues
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30 /**
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31 *
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32 * @author Artem Tikhomirov
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33 * @author TMate Software Ltd.
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34 */
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35 public class BundleSerializer implements DataSerializer.DataSource {
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36 private final LogFacility log;
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37 private final File bundleFile;
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38
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39 public static BundleSerializer newInstance(SessionContext ctx, HgBundle bundle) {
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40 return new BundleSerializer(ctx.getLog(), HgInternals.getBundleFile(bundle));
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41 }
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42
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43 public BundleSerializer(LogFacility logFacility, File bundleFile) {
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44 log = logFacility;
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45 this.bundleFile = bundleFile;
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46 }
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47
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48 public void serialize(DataSerializer out) throws HgIOException, HgRuntimeException {
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49 FileInputStream fis = null;
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50 try {
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51 fis = new FileInputStream(bundleFile);
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52 byte[] buffer = new byte[8*1024];
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53 int r;
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54 while ((r = fis.read(buffer, 0, buffer.length)) > 0) {
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55 out.write(buffer, 0, r);
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56 }
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57
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58 } catch (IOException ex) {
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59 throw new HgIOException("Failed to serialize bundle", bundleFile);
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60 } finally {
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61 new FileUtils(log, this).closeQuietly(fis, bundleFile);
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62 }
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63 }
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64
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65 public int serializeLength() throws HgRuntimeException {
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66 return Internals.ltoi(bundleFile.length());
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67 }
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68 }