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annotate src/org/tmatesoft/hg/internal/RequiresFile.java @ 366:189dc6dc1c3e

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Use exceptions to expose errors reading mercurial data
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 16 Dec 2011 04:43:18 +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 }