Mercurial > hg4j

annotate src/org/tmatesoft/hg/internal/RequiresFile.java @ 709:497e697636fc

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Report merged lines as changed block if possible, not as a sequence of added/deleted blocks. To facilitate access to merge parent lines AddBlock got mergeLineAt() method that reports index of the line in the second parent (if any), while insertedAt() has been changed to report index in the first parent always
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Wed, 21 Aug 2013 16:23:27 +0200
parents ba36f66c32b4
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rev   line source
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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 }