Mercurial > dive4elements > river
annotate flys-backend/src/main/java/de/intevation/flys/importer/PRFParser.java @ 1196:46127af605ba
Added parser for PRF files. TODO: Extract data and km.
flys-backend/trunk@2296 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Wed, 06 Jul 2011 17:54:49 +0000 |
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children | ce3dacc6ea92 |
rev | line source |
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1196
46127af605ba
Added parser for PRF files. TODO: Extract data and km.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff
changeset
|
1 package de.intevation.flys.importer; |
46127af605ba
Added parser for PRF files. TODO: Extract data and km.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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2 |
46127af605ba
Added parser for PRF files. TODO: Extract data and km.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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3 import java.util.Map; |
46127af605ba
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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4 import java.util.Stack; |
46127af605ba
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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5 import java.util.TreeMap; |
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6 |
46127af605ba
Added parser for PRF files. TODO: Extract data and km.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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7 import java.util.regex.Pattern; |
46127af605ba
Added parser for PRF files. TODO: Extract data and km.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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8 import java.util.regex.Matcher; |
46127af605ba
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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9 |
46127af605ba
Added parser for PRF files. TODO: Extract data and km.
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10 import java.io.File; |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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11 import java.io.InputStreamReader; |
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12 import java.io.LineNumberReader; |
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13 import java.io.FileInputStream; |
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14 import java.io.IOException; |
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15 |
46127af605ba
Added parser for PRF files. TODO: Extract data and km.
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16 import org.apache.log4j.Logger; |
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17 |
46127af605ba
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18 public class PRFParser |
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19 { |
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20 private static Logger log = Logger.getLogger(PRFParser.class); |
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21 |
46127af605ba
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22 public static final String ENCODING = |
46127af605ba
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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23 System.getProperty("flys.backend.prf.encoding", "ISO-8859-1"); |
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24 |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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25 public static final Pattern DATA_PATTERN = |
46127af605ba
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26 Pattern.compile( |
46127af605ba
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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27 "\\((\\d+)x\\s*,\\s*(\\d+)\\(" + |
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28 "\\s*f(\\d+)\\.(\\d+)\\s*,\\s*f(\\d+)\\.(\\d+)\\s*\\)?\\)?"); |
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29 |
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30 public static final Pattern KM_PATTERN = |
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31 Pattern.compile("\\((\\d+)x\\s*,\\s*f(\\d+)\\.(\\d+)\\s*\\)?"); |
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parents:
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32 |
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33 public static class DataFormat { |
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34 |
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35 protected int deleteChars; |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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36 protected int maxRepetitions; |
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Added parser for PRF files. TODO: Extract data and km.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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37 protected int firstIntegerPlaces; |
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Added parser for PRF files. TODO: Extract data and km.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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38 protected int firstFractionPlaces; |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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39 protected int secondIntegerPlaces; |
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Added parser for PRF files. TODO: Extract data and km.
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40 protected int secondFractionPlaces; |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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41 |
46127af605ba
Added parser for PRF files. TODO: Extract data and km.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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42 public DataFormat() { |
46127af605ba
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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43 } |
46127af605ba
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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44 |
46127af605ba
Added parser for PRF files. TODO: Extract data and km.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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45 public DataFormat(Matcher m) { |
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46 deleteChars = Integer.parseInt(m.group(1)); |
46127af605ba
Added parser for PRF files. TODO: Extract data and km.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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47 maxRepetitions = Integer.parseInt(m.group(2)); |
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parents:
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48 firstIntegerPlaces = Integer.parseInt(m.group(3)); |
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49 firstFractionPlaces = Integer.parseInt(m.group(4)); |
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parents:
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50 secondIntegerPlaces = Integer.parseInt(m.group(5)); |
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51 secondFractionPlaces = Integer.parseInt(m.group(6)); |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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52 } |
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parents:
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53 |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
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54 public void extractData(String line, Map<Double, Double> dest) { |
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55 //TODO: Implement me! |
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56 } |
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parents:
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57 } // class DataFormat |
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parents:
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58 |
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59 public static class KMFormat { |
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60 protected int deleteChars; |
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61 protected int integerPlaces; |
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62 protected int fractionPlaces; |
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63 |
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parents:
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64 public KMFormat() { |
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65 } |
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parents:
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66 |
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67 public KMFormat(Matcher m) { |
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68 deleteChars = Integer.parseInt(m.group(1)); |
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69 integerPlaces = Integer.parseInt(m.group(2)); |
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70 fractionPlaces = Integer.parseInt(m.group(3)); |
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parents:
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71 } |
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72 |
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73 public double extractKm(String line) { |
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74 // TODO: Implement me! |
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75 return 0d; |
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76 } |
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parents:
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77 } // class KMFormat |
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78 |
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79 protected Map<Double, Map<Double, Double>> data; |
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80 |
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81 public PRFParser() { |
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82 data = new TreeMap<Double, Map<Double, Double>>(); |
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parents:
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83 } |
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Added parser for PRF files. TODO: Extract data and km.
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parents:
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84 |
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parents:
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85 |
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parents:
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86 public boolean parse(File file) { |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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87 |
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88 if (!(file.isFile() && file.canRead())) { |
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89 log.warn("cannot open file '" + file + "'"); |
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90 return false; |
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Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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91 } |
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Added parser for PRF files. TODO: Extract data and km.
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parents:
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92 |
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parents:
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93 log.info("parsing PRF file: '" + file + "'"); |
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parents:
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94 |
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Added parser for PRF files. TODO: Extract data and km.
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parents:
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95 LineNumberReader in = null; |
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parents:
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96 |
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97 try { |
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parents:
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98 in = |
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99 new LineNumberReader( |
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100 new InputStreamReader( |
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101 new FileInputStream(file), ENCODING)); |
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parents:
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102 |
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parents:
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103 String line = in.readLine(); |
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104 |
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105 if (line == null || (line = line.trim()).length() == 0) { |
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106 log.warn("file is empty."); |
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107 return false; |
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Added parser for PRF files. TODO: Extract data and km.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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108 } |
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parents:
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109 |
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parents:
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110 Matcher m = DATA_PATTERN.matcher(line); |
46127af605ba
Added parser for PRF files. TODO: Extract data and km.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
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111 |
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112 if (!m.matches()) { |
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113 log.warn("First line does not look like a PRF data pattern."); |
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114 return false; |
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115 } |
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116 |
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117 DataFormat dataFormat = new DataFormat(m); |
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118 |
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119 if ((line = in.readLine()) == null) { |
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120 log.warn("premature EOF. Expected integer in line 2"); |
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121 return false; |
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122 } |
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123 |
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124 try { |
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125 if (Integer.parseInt(line) != dataFormat.maxRepetitions) { |
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126 log.warn("Expected " + |
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127 dataFormat.maxRepetitions + " in line 2"); |
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128 return false; |
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129 } |
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130 } |
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131 catch (NumberFormatException nfe) { |
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132 log.warn("invalid integer in line 2", nfe); |
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133 return false; |
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134 } |
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135 |
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136 if ((line = in.readLine()) == null) { |
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137 log.warn( |
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138 "premature EOF. Expected pattern for km extraction"); |
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139 return false; |
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140 } |
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141 |
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142 m = KM_PATTERN.matcher(line); |
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143 |
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144 if (!m.matches()) { |
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145 log.warn( |
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146 "line 4 does not look like a PRF km extraction pattern."); |
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147 return false; |
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148 } |
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149 |
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150 while ((line = in.readLine()) != null) { |
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151 if (line.length() == 0) { |
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152 continue; |
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153 } |
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154 // TODO: Do data and km extraction |
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155 } |
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156 } |
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157 catch (IOException ioe) { |
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158 log.error(ioe); |
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159 return false; |
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160 } |
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161 finally { |
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162 if (in != null) { |
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163 try { |
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164 in.close(); |
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165 } |
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166 catch (IOException ioe) { |
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167 log.error(ioe); |
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168 } |
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169 } |
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170 } |
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171 |
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172 return true; |
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173 } |
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174 |
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175 public void reset() { |
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176 data.clear(); |
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177 } |
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178 |
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179 public static void parsePRFs(File root) { |
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180 |
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181 PRFParser parser = new PRFParser(); |
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182 |
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183 Stack<File> stack = new Stack<File>(); |
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184 stack.push(root); |
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185 |
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186 while (!stack.empty()) { |
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187 File file = stack.pop(); |
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188 if (file.isDirectory()) { |
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189 File [] files = file.listFiles(); |
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190 if (files != null) { |
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191 for (File f: files) { |
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192 stack.push(f); |
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193 } |
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194 } |
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195 } |
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196 else if (file.isFile() |
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197 && file.getName().toLowerCase().endsWith(".prf") |
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198 ) { |
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199 parser.reset(); |
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200 boolean success = parser.parse(file); |
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201 log.info("parsing " + (success ? "succeeded" : "failed")); |
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202 } |
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|
203 } |
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|
204 } |
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205 |
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206 public static void main(String [] args) { |
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207 |
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|
208 for (String arg: args) { |
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|
209 parsePRFs(new File(arg)); |
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210 } |
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211 } |
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212 } |
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|
213 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |