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annotate src/org/tmatesoft/hg/internal/RequiresFile.java @ 697:24f4efedc9d5

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author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 06 Aug 2013 13:34:34 +0200
parents ba36f66c32b4
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1 /*
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2 * Copyright (c) 2011-2012 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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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 << 0;
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32 public static final int FNCACHE = 1 << 1;
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33 public static final int DOTENCODE = 1 << 2;
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34 public static final int REVLOGV0 = 1 << 31;
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35 public static final int REVLOGV1 = 1 << 30;
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36
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37 public RequiresFile() {
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38 }
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39
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40 /**
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41 * Settings from requires file as bits
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42 */
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43 public int parse(File requiresFile) throws IOException {
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44 if (!requiresFile.exists()) {
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45 // TODO check what's going on in Mercurial if no requires exist
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46 return 0;
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47 }
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48 BufferedReader br = null;
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49 try {
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50 br = new BufferedReader(new InputStreamReader(new FileInputStream(requiresFile)));
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51 String line;
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52 int flags = 0;
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53 while ((line = br.readLine()) != null) {
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54 if ("revlogv1".equals(line)) {
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55 flags |= REVLOGV1;
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56 } else if ("store".equals(line)) {
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57 flags |= STORE;
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58 } else if ("fncache".equals(line)) {
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59 flags |= FNCACHE;
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60 } else if ("dotencode".equals(line)) {
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61 flags |= DOTENCODE;
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62 }
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63 }
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64 if ((flags & REVLOGV1) == 0) {
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65 flags |= REVLOGV0; // TODO check if there's no special flag for V0 indeed
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66 }
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67 return flags;
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68 } finally {
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69 if (br != null) {
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70 br.close();
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71 }
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72 }
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73 }
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74 }