1 /* |
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2 * Copyright 2013 Mike Becker. All rights reserved. |
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3 * |
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4 * Redistribution and use in source and binary forms, with or without |
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5 * modification, are permitted provided that the following conditions are met: |
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6 * |
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7 * 1. Redistributions of source code must retain the above copyright |
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8 * notice, this list of conditions and the following disclaimer. |
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9 * |
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10 * 2. Redistributions in binary form must reproduce the above copyright |
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11 * notice, this list of conditions and the following disclaimer in the |
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12 * documentation and/or other materials provided with the distribution. |
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13 * |
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14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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17 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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24 * POSSIBILITY OF SUCH DAMAGE. |
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25 */ |
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26 |
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27 package de.uapcore.sudoku; |
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28 |
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29 import java.io.BufferedReader; |
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30 import java.io.BufferedWriter; |
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31 import java.io.FileInputStream; |
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32 import java.io.FileOutputStream; |
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33 import java.io.IOException; |
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34 import java.io.InputStreamReader; |
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35 import java.io.OutputStreamWriter; |
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36 import java.util.regex.Matcher; |
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37 import java.util.regex.Pattern; |
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38 |
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39 /** |
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40 * |
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41 * @author mike |
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42 */ |
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43 public class DocumentHandler { |
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44 |
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45 private String filename; |
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46 |
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47 public void load(Field field) throws IOException { |
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48 if (!isFilenameSet()) { |
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49 throw new IOException("no filename supplied"); |
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50 } |
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51 int row = 0; |
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52 try (BufferedReader in = new BufferedReader( |
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53 new InputStreamReader(new FileInputStream(filename)))) { |
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54 Pattern pat = Pattern.compile("^\\s*(?:[1-9_] ){8}[1-9_]\\s*$"); |
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55 String line; |
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56 while ((line = in.readLine()) != null) { |
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57 if (line.matches("^\\s*$")) { |
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58 continue; |
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59 } |
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60 Matcher m = pat.matcher(line); |
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61 if (m.matches()) { |
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62 String c[] = line.trim().split(" "); |
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63 if (c.length != 9) { |
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64 break; |
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65 } |
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66 for (int i = 0 ; i < 9 ; i++) { |
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67 field.setCellValue(i, row, |
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68 c[i].equals("_") ? 0 : Integer.valueOf(c[i])); |
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69 } |
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70 row++; |
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71 } else { |
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72 break; |
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73 } |
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74 } |
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75 if (row != 9) { |
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76 throw new IOException("Kein Sudoku-Feld enthalten!"); |
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77 } |
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78 } |
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79 field.setAllCellsModified(false); |
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80 } |
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81 |
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82 public void save(Field field) throws IOException { |
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83 if (!isFilenameSet()) { |
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84 throw new IOException("no filename supplied"); |
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85 } |
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86 |
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87 try (BufferedWriter out = new BufferedWriter( |
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88 new OutputStreamWriter(new FileOutputStream(filename)))) { |
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89 for (int i = 0 ; i < 9 ; i++) { |
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90 int[] row = field.getRow(i); |
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91 for (int j = 0 ; j < 9 ; j++) { |
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92 out.append(row[j] > 0 ? Character.forDigit(row[j], 10):'_'); |
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93 out.append(j == 8 ? '\n': ' '); |
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94 } |
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95 } |
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96 } |
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97 } |
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98 |
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99 public void setFilename(String filename) { |
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100 this.filename = filename; |
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101 } |
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102 |
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103 public void clearFilename() { |
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104 filename = null; |
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105 } |
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106 |
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107 public boolean isFilenameSet() { |
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108 return filename != null; |
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109 } |
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110 } |
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