Mercurial > dive4elements > river

annotate backend/src/main/java/org/dive4elements/river/importer/parsers/tim/TIMParser.java @ 8187:3bb1c62ad732

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Moved package org.dive4elements.river.utils to org.dive4elements.river.backend.utils.
author Sascha L. Teichmann <teichmann@intevation.de>
date Thu, 04 Sep 2014 15:03:25 +0200
parents 4c3ccf2b0304
children
rev   line source
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Sascha L. Teichmann <teichmann@intevation.de>
parents: 5838
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.importer.parsers.tim;
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10
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11 import java.io.BufferedReader;
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12 import java.io.FileInputStream;
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13 import java.io.IOException;
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14 import java.io.InputStreamReader;
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15
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16 import java.util.ArrayList;
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17 import java.util.Collections;
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18 import java.util.List;
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19 import java.util.Map;
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20 import java.util.TreeMap;
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21
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22 import org.apache.log4j.Logger;
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23
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24 import org.dive4elements.river.backend.utils.EpsilonComparator;
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25
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26 /** Parser for single .tim files. */
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27 public class TIMParser
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28 {
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29 /** Private logger. */
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30 private static Logger logger = Logger.getLogger(TIMParser.class);
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31
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32 /** Proper encoding. */
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33 public static final String ENCODING =
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34 System.getProperty("tim.encoding", "ISO-8859-1");
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35
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36 /** Map of stations (km) to points (xyz). */
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37 protected Map<Double, List<Coordinate>> lines;
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38
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39 public TIMParser() {
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40 lines = new TreeMap<Double, List<Coordinate>>(EpsilonComparator.CMP);
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41 }
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42
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43 /** Access map of stations (km) to coordinates (xyz). */
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44 public Map<Double, List<Coordinate>> getLines() {
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45 return lines;
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46 }
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47
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48 /** Get number of lines (data). */
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49 public int numLines() {
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50 return lines.size();
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51 }
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52
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53 /** Parse single .tim file. */
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54 public void load(String filename) throws IOException {
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55 BufferedReader reader =
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56 new BufferedReader(
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57 new InputStreamReader(
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58 new FileInputStream(filename), ENCODING));
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59 try {
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60 String row;
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61 while ((row = reader.readLine()) != null) {
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62 if (row.length() < 54) {
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63 logger.warn("row too short");
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64 continue;
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65 }
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66 double station, x, y, z;
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67 try {
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68 station = Double.parseDouble(row.substring( 9, 16))/1000d;
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69 x = Double.parseDouble(row.substring(20, 30))/1000d;
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70 y = Double.parseDouble(row.substring(30, 40))/1000d;
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71 z = Double.parseDouble(row.substring(47, 54))/10000d;
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72 } catch (NumberFormatException nfe) {
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73 logger.warn("Invalid row");
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74 continue;
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75 }
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76
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77 Double km = station;
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78
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79 List<Coordinate> line = lines.get(km);
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80 if (line == null) {
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81 line = new ArrayList<Coordinate>();
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82 lines.put(km, line);
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83 }
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84
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85 line.add(new Coordinate(x, y, z));
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86 }
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87 // Bring coords in lexicographical order.
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88 sortCoordinates();
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89 } finally {
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90 reader.close();
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91 }
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92 }
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93
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94 /** Sort coordinates of lines lexicographically. */
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95 protected void sortCoordinates() {
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96 for (List<Coordinate> line: lines.values()) {
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97 Collections.sort(line, LexiComparator.CMP);
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98 }
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99 }
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100 }
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101 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org