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annotate src/org/tmatesoft/hg/internal/FileSystemHelper.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 4e6179bde4fc
children 661e77dc88ba
rev   line source
580
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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.
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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 static org.tmatesoft.hg.util.LogFacility.Severity.Warn;
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20
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21 import java.io.File;
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22 import java.io.IOException;
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23 import java.nio.ByteBuffer;
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24 import java.util.ArrayList;
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25 import java.util.Arrays;
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26 import java.util.Collections;
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27 import java.util.List;
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28
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29 import org.tmatesoft.hg.core.SessionContext;
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30
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31 /**
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32 * TODO Merge with RegularFileStats
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33 *
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34 * @author Artem Tikhomirov
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35 * @author TMate Software Ltd.
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36 */
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37 public class FileSystemHelper {
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38
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39 private final SessionContext ctx;
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40 private final List<String> linkCmd, chmodCmd, statCmd;
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41 private final ProcessExecHelper execHelper;
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42
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43 public FileSystemHelper(SessionContext sessionContext) {
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44 ctx = sessionContext;
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45 if (Internals.runningOnWindows()) {
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46 linkCmd = Arrays.asList("mklink", "%1", "%2");
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47 chmodCmd = Collections.emptyList();
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48 statCmd = Collections.emptyList();
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49 } else {
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50 linkCmd = Arrays.asList("/bin/ln", "-s", "%2", "%1");
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51 chmodCmd = Arrays.asList("/bin/chmod", "+x", "%1");
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52 statCmd = Arrays.asList("stat", "--format=%a", "%1");
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53 }
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54 execHelper = new ProcessExecHelper();
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55 }
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56
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57 public void createSymlink(File parentDir, String linkName, byte[] target) throws IOException {
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58 ArrayList<String> command = new ArrayList<String>(linkCmd);
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59 command.set(command.indexOf("%1"), linkName);
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60 String targetFilename = Internals.getFileEncoding(ctx).decode(ByteBuffer.wrap(target)).toString();
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61 command.set(command.indexOf("%2"), targetFilename);
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62 execHelper.cwd(parentDir);
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63 try {
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64 execHelper.exec(command);
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65 } catch (InterruptedException ex) {
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66 IOException e = new IOException();
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67 ex.initCause(ex); // XXX Java 1.5
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68 throw e;
580
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69 }
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70 }
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71
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72 public void setExecutableBit(File parentDir, String fname) throws IOException {
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73 if (chmodCmd.isEmpty()) {
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74 return;
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75 }
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76 ArrayList<String> command = new ArrayList<String>(chmodCmd);
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77 command.set(command.indexOf("%1"), fname);
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78 execHelper.cwd(parentDir);
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79 try {
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80 execHelper.exec(command);
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81 } catch (InterruptedException ex) {
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82 IOException e = new IOException();
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83 ex.initCause(ex); // XXX Java 1.5
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84 throw e;
580
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85 }
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86 }
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87
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88 public int getFileMode(File file, int defaultValue) throws IOException {
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89 if (statCmd.isEmpty()) {
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90 return defaultValue;
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91 }
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92 ArrayList<String> command = new ArrayList<String>(statCmd);
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93 command.set(command.indexOf("%1"), file.getAbsolutePath());
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94 String result = null;
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95 try {
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96 result = execHelper.exec(command).toString().trim();
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97 if (result.length() == 0) { // XXX Java 1.5 isEmpty()
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98 return defaultValue;
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99 }
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100 return Integer.parseInt(result, 8);
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101 } catch (InterruptedException ex) {
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102 IOException e = new IOException();
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103 ex.initCause(ex); // XXX Java 1.5
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104 throw e;
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105 } catch (NumberFormatException ex) {
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106 ctx.getLog().dump(getClass(), Warn, ex, String.format("Bad value for access rights:%s", result));
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107 return defaultValue;
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108 }
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109 }
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110 }