Mercurial > dive4elements > river
comparison flys-backend/src/main/java/de/intevation/flys/importer/parsers/tim/TIMParser.java @ 4731:7d9fcd322c45
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 |
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| 4730:1aca30035932 | 4731:7d9fcd322c45 |
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| 1 package de.intevation.flys.importer.parsers.tim; | |
| 2 | |
| 3 import java.io.BufferedReader; | |
| 4 import java.io.FileInputStream; | |
| 5 import java.io.IOException; | |
| 6 import java.io.InputStreamReader; | |
| 7 | |
| 8 import java.util.ArrayList; | |
| 9 import java.util.Collections; | |
| 10 import java.util.List; | |
| 11 import java.util.Map; | |
| 12 import java.util.TreeMap; | |
| 13 | |
| 14 | |
| 15 /** Parser for single .tim files. */ | |
| 16 // TODO switch to proper logging. | |
| 17 public class TIMParser | |
| 18 { | |
| 19 /** Proper encoding. */ | |
| 20 public static final String ENCODING = | |
| 21 System.getProperty("tim.encoding", "ISO-8859-1"); | |
| 22 | |
| 23 /** Map of stations (km) to points (xyz). */ | |
| 24 protected Map<Double, List<Coordinate>> lines; | |
| 25 | |
| 26 public TIMParser() { | |
| 27 lines = new TreeMap<Double, List<Coordinate>>(EpsilonComparator.CMP); | |
| 28 } | |
| 29 | |
| 30 /** Access map of stations (km) to coordinates (xyz). */ | |
| 31 public Map<Double, List<Coordinate>> getLines() { | |
| 32 return lines; | |
| 33 } | |
| 34 | |
| 35 /** Get number of lines (data). */ | |
| 36 public int numLines() { | |
| 37 return lines.size(); | |
| 38 } | |
| 39 | |
| 40 /** Parse single .tim file. */ | |
| 41 public void load(String filename) throws IOException { | |
| 42 BufferedReader reader = | |
| 43 new BufferedReader( | |
| 44 new InputStreamReader( | |
| 45 new FileInputStream(filename), ENCODING)); | |
| 46 try { | |
| 47 String row; | |
| 48 while ((row = reader.readLine()) != null) { | |
| 49 if (row.length() < 54) { | |
| 50 System.err.println("row too short"); | |
| 51 continue; | |
| 52 } | |
| 53 double station, x, y, z; | |
| 54 try { | |
| 55 station = Double.parseDouble(row.substring( 9, 16))/1000d; | |
| 56 x = Double.parseDouble(row.substring(20, 30))/1000d; | |
| 57 y = Double.parseDouble(row.substring(30, 40))/1000d; | |
| 58 z = Double.parseDouble(row.substring(47, 54))/10000d; | |
| 59 } catch (NumberFormatException nfe) { | |
| 60 System.err.println("Invalid row"); | |
| 61 continue; | |
| 62 } | |
| 63 | |
| 64 Double km = station; | |
| 65 | |
| 66 List<Coordinate> line = lines.get(km); | |
| 67 if (line == null) { | |
| 68 line = new ArrayList<Coordinate>(); | |
| 69 lines.put(km, line); | |
| 70 } | |
| 71 | |
| 72 line.add(new Coordinate(x, y, z)); | |
| 73 } | |
| 74 // Bring coords in lexicographical order. | |
| 75 sortCoordinates(); | |
| 76 } finally { | |
| 77 reader.close(); | |
| 78 } | |
| 79 } | |
| 80 | |
| 81 /** Sort coordinates of lines lexicographically. */ | |
| 82 protected void sortCoordinates() { | |
| 83 for (List<Coordinate> line: lines.values()) { | |
| 84 Collections.sort(line, LexiComparator.CMP); | |
| 85 } | |
| 86 } | |
| 87 } | |
| 88 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |