teichmann@5829: package org.dive4elements.river.importer.parsers.tim;
sascha@4731: 
sascha@4731: import java.io.BufferedReader;
sascha@4731: import java.io.FileInputStream;
sascha@4731: import java.io.IOException;
sascha@4731: import java.io.InputStreamReader;
sascha@4731: 
sascha@4731: import java.util.ArrayList;
sascha@4731: import java.util.Collections;
sascha@4731: import java.util.List;
sascha@4731: import java.util.Map;
sascha@4731: import java.util.TreeMap;
sascha@4731: 
felix@4786: import org.apache.log4j.Logger;
felix@4786: 
teichmann@5829: import org.dive4elements.river.utils.EpsilonComparator;
sascha@4731: 
sascha@4731: /** Parser for single .tim files. */
sascha@4731: public class TIMParser
sascha@4731: {
felix@4786:     /** Private logger. */
felix@4786:     private static Logger logger = Logger.getLogger(TIMParser.class);
felix@4786: 
sascha@4731:     /** Proper encoding. */
sascha@4731:     public static final String ENCODING =
sascha@4731:         System.getProperty("tim.encoding", "ISO-8859-1");
sascha@4731: 
sascha@4731:     /** Map of stations (km) to points (xyz). */
sascha@4731:     protected Map<Double, List<Coordinate>> lines;
sascha@4731: 
sascha@4731:     public TIMParser() {
sascha@4731:         lines = new TreeMap<Double, List<Coordinate>>(EpsilonComparator.CMP);
sascha@4731:     }
sascha@4731: 
sascha@4731:     /** Access map of stations (km) to coordinates (xyz). */
sascha@4731:     public Map<Double, List<Coordinate>> getLines() {
sascha@4731:         return lines;
sascha@4731:     }
sascha@4731: 
sascha@4731:     /** Get number of lines (data). */
sascha@4731:     public int numLines() {
sascha@4731:         return lines.size();
sascha@4731:     }
sascha@4731: 
sascha@4731:     /** Parse single .tim file. */
sascha@4731:     public void load(String filename) throws IOException {
sascha@4731:         BufferedReader reader =
sascha@4731:             new BufferedReader(
sascha@4731:             new InputStreamReader(
sascha@4731:             new FileInputStream(filename), ENCODING));
sascha@4731:         try {
sascha@4731:             String row;
sascha@4731:             while ((row = reader.readLine()) != null) {
sascha@4731:                 if (row.length() < 54) {
felix@4786:                     logger.warn("row too short");
sascha@4731:                     continue;
sascha@4731:                 }
sascha@4731:                 double station, x, y, z;
sascha@4731:                 try {
sascha@4731:                     station = Double.parseDouble(row.substring( 9, 16))/1000d;
sascha@4731:                     x       = Double.parseDouble(row.substring(20, 30))/1000d;
sascha@4731:                     y       = Double.parseDouble(row.substring(30, 40))/1000d;
sascha@4731:                     z       = Double.parseDouble(row.substring(47, 54))/10000d;
sascha@4731:                 } catch (NumberFormatException nfe) {
felix@4786:                     logger.warn("Invalid row");
sascha@4731:                     continue;
sascha@4731:                 }
sascha@4731: 
sascha@4731:                 Double km = station;
sascha@4731: 
sascha@4731:                 List<Coordinate> line = lines.get(km);
sascha@4731:                 if (line == null) {
sascha@4731:                     line = new ArrayList<Coordinate>();
sascha@4731:                     lines.put(km, line);
sascha@4731:                 }
sascha@4731: 
sascha@4731:                 line.add(new Coordinate(x, y, z));
sascha@4731:             }
sascha@4731:             // Bring coords in lexicographical order.
sascha@4731:             sortCoordinates();
sascha@4731:         } finally {
sascha@4731:             reader.close();
sascha@4731:         }
sascha@4731:     }
sascha@4731: 
sascha@4731:     /** Sort coordinates of lines lexicographically. */
sascha@4731:     protected void sortCoordinates() {
sascha@4731:         for (List<Coordinate> line: lines.values()) {
sascha@4731:             Collections.sort(line, LexiComparator.CMP);
sascha@4731:         }
sascha@4731:     }
sascha@4731: }
sascha@4731: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :