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annotate flys-backend/src/main/java/de/intevation/flys/importer/parsers/tim/TIMParser.java @ 4731:7d9fcd322c45

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Initial version of TIMParser, comments and TODOs by Felix Wolfsteller, Code by Sascha Teichmann.
author Sascha Teichmann <sascha.teichmann@intevation.de>
date Fri, 28 Dec 2012 14:56:43 +0100
parents
children 94b39073f0f7
rev   line source
4731
7d9fcd322c45 Initial version of TIMParser, comments and TODOs by Felix Wolfsteller, Code by Sascha Teichmann.
Sascha Teichmann <sascha.teichmann@intevation.de>
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1 package de.intevation.flys.importer.parsers.tim;
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2
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3 import java.io.BufferedReader;
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4 import java.io.FileInputStream;
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5 import java.io.IOException;
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6 import java.io.InputStreamReader;
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7
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8 import java.util.ArrayList;
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9 import java.util.Collections;
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10 import java.util.List;
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11 import java.util.Map;
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12 import java.util.TreeMap;
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13
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14
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15 /** Parser for single .tim files. */
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16 // TODO switch to proper logging.
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17 public class TIMParser
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18 {
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19 /** Proper encoding. */
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20 public static final String ENCODING =
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21 System.getProperty("tim.encoding", "ISO-8859-1");
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22
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23 /** Map of stations (km) to points (xyz). */
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24 protected Map<Double, List<Coordinate>> lines;
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25
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26 public TIMParser() {
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27 lines = new TreeMap<Double, List<Coordinate>>(EpsilonComparator.CMP);
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28 }
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29
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30 /** Access map of stations (km) to coordinates (xyz). */
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31 public Map<Double, List<Coordinate>> getLines() {
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32 return lines;
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33 }
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34
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35 /** Get number of lines (data). */
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36 public int numLines() {
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37 return lines.size();
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38 }
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39
7d9fcd322c45 Initial version of TIMParser, comments and TODOs by Felix Wolfsteller, Code by Sascha Teichmann.
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40 /** Parse single .tim file. */
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41 public void load(String filename) throws IOException {
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42 BufferedReader reader =
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43 new BufferedReader(
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44 new InputStreamReader(
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45 new FileInputStream(filename), ENCODING));
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46 try {
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47 String row;
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48 while ((row = reader.readLine()) != null) {
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49 if (row.length() < 54) {
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50 System.err.println("row too short");
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51 continue;
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52 }
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53 double station, x, y, z;
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54 try {
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55 station = Double.parseDouble(row.substring( 9, 16))/1000d;
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56 x = Double.parseDouble(row.substring(20, 30))/1000d;
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57 y = Double.parseDouble(row.substring(30, 40))/1000d;
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58 z = Double.parseDouble(row.substring(47, 54))/10000d;
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59 } catch (NumberFormatException nfe) {
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60 System.err.println("Invalid row");
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61 continue;
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62 }
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63
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64 Double km = station;
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65
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66 List<Coordinate> line = lines.get(km);
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67 if (line == null) {
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68 line = new ArrayList<Coordinate>();
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69 lines.put(km, line);
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70 }
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71
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72 line.add(new Coordinate(x, y, z));
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73 }
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74 // Bring coords in lexicographical order.
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75 sortCoordinates();
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76 } finally {
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77 reader.close();
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78 }
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79 }
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80
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81 /** Sort coordinates of lines lexicographically. */
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82 protected void sortCoordinates() {
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83 for (List<Coordinate> line: lines.values()) {
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84 Collections.sort(line, LexiComparator.CMP);
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85 }
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86 }
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87 }
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88 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org