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annotate src/org/tmatesoft/hg/internal/RequiresFile.java @ 338:3cfa4d908fc9

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Add options to control DataAccessProvider, allow to turn off use of file memory mapping in particular to solve potential sharing violation (os file handle gets released on MappedByteByffer being GC'd, not on FileChannel.close())
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 15 Nov 2011 04:47:03 +0100
parents 981f9f50bb6c
children ba36f66c32b4
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1 /*
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2 * Copyright (c) 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.internal;
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18
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19 import java.io.BufferedReader;
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20 import java.io.File;
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21 import java.io.FileInputStream;
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22 import java.io.IOException;
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23 import java.io.InputStreamReader;
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24
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25 /**
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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 RequiresFile {
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31 public static final int STORE = 1;
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32 public static final int FNCACHE = 2;
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33 public static final int DOTENCODE = 4;
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34
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35 public RequiresFile() {
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36 }
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37
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38 public void parse(Internals repoImpl, File requiresFile) throws IOException {
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39 if (!requiresFile.exists()) {
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40 return;
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41 }
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42 BufferedReader br = null;
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43 try {
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44 boolean revlogv1 = false;
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45 boolean store = false;
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46 boolean fncache = false;
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47 boolean dotencode = false;
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48 br = new BufferedReader(new InputStreamReader(new FileInputStream(requiresFile)));
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49 String line;
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50 while ((line = br.readLine()) != null) {
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51 revlogv1 |= "revlogv1".equals(line);
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52 store |= "store".equals(line);
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53 fncache |= "fncache".equals(line);
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54 dotencode |= "dotencode".equals(line);
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55 }
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56 int flags = 0;
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57 flags += store ? STORE : 0;
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58 flags += fncache ? FNCACHE : 0;
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59 flags += dotencode ? DOTENCODE : 0;
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60 repoImpl.setStorageConfig(revlogv1 ? 1 : 0, flags);
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61 } finally {
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62 if (br != null) {
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63 br.close();
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64 }
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65 }
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66 }
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67 }