[8378] | 1 | // License: GPL. For details, see LICENSE file.
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[12421] | 2 | package org.openstreetmap.josm.io.nmea;
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[738] | 3 |
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| 4 | import java.io.BufferedReader;
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[7596] | 5 | import java.io.IOException;
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[738] | 6 | import java.io.InputStream;
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| 7 | import java.io.InputStreamReader;
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[7082] | 8 | import java.nio.charset.StandardCharsets;
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[1167] | 9 | import java.text.ParsePosition;
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| 10 | import java.text.SimpleDateFormat;
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[738] | 11 | import java.util.ArrayList;
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| 12 | import java.util.Collection;
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[2907] | 13 | import java.util.Collections;
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[1167] | 14 | import java.util.Date;
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[11553] | 15 | import java.util.Optional;
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[738] | 16 |
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[6287] | 17 | import org.openstreetmap.josm.Main;
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[738] | 18 | import org.openstreetmap.josm.data.coor.LatLon;
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[7518] | 19 | import org.openstreetmap.josm.data.gpx.GpxConstants;
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[738] | 20 | import org.openstreetmap.josm.data.gpx.GpxData;
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[2907] | 21 | import org.openstreetmap.josm.data.gpx.ImmutableGpxTrack;
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[738] | 22 | import org.openstreetmap.josm.data.gpx.WayPoint;
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[12421] | 23 | import org.openstreetmap.josm.io.IllegalDataException;
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[11374] | 24 | import org.openstreetmap.josm.tools.JosmRuntimeException;
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[10475] | 25 | import org.openstreetmap.josm.tools.date.DateUtils;
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[738] | 26 |
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| 27 | /**
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[12421] | 28 | * Reads a NMEA 0183 file. Based on information from
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| 29 | * <a href="http://www.catb.org/gpsd/NMEA.html">http://www.catb.org/gpsd</a>.
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[1167] | 30 | *
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[12421] | 31 | * NMEA files are in printable ASCII form and may include information such as position,
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| 32 | * speed, depth, frequency allocation, etc.
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| 33 | * Typical messages might be 11 to a maximum of 79 characters in length.
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| 34 | *
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| 35 | * NMEA standard aims to support one-way serial data transmission from a single "talker"
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| 36 | * to one or more "listeners". The type of talker is identified by a 2-character mnemonic.
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| 37 | *
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| 38 | * NMEA information is encoded through a list of "sentences".
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| 39 | *
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[738] | 40 | * @author cbrill
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| 41 | */
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| 42 | public class NmeaReader {
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| 43 |
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[12421] | 44 | public enum VTG {
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[8510] | 45 | COURSE(1), COURSE_REF(2), // true course
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[1169] | 46 | COURSE_M(3), COURSE_M_REF(4), // magnetic course
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| 47 | SPEED_KN(5), SPEED_KN_UNIT(6), // speed in knots
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| 48 | SPEED_KMH(7), SPEED_KMH_UNIT(8), // speed in km/h
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| 49 | REST(9); // version-specific rest
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[738] | 50 |
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[1169] | 51 | public final int position;
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[1167] | 52 |
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[12421] | 53 | VTG(int position) {
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[1169] | 54 | this.position = position;
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| 55 | }
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| 56 | }
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[1167] | 57 |
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[12421] | 58 | public enum RMC {
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[1169] | 59 | TIME(1),
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| 60 | /** Warning from the receiver (A = data ok, V = warning) */
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| 61 | RECEIVER_WARNING(2),
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| 62 | WIDTH_NORTH(3), WIDTH_NORTH_NAME(4), // Latitude, NS
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| 63 | LENGTH_EAST(5), LENGTH_EAST_NAME(6), // Longitude, EW
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| 64 | SPEED(7), COURSE(8), DATE(9), // Speed in knots
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| 65 | MAGNETIC_DECLINATION(10), UNKNOWN(11), // magnetic declination
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| 66 | /**
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[12421] | 67 | * Mode (A = autonom; D = differential; E = estimated; N = not valid; S = simulated)
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[1169] | 68 | *
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| 69 | * @since NMEA 2.3
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| 70 | */
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| 71 | MODE(12);
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[738] | 72 |
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[1169] | 73 | public final int position;
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[738] | 74 |
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[12421] | 75 | RMC(int position) {
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[1169] | 76 | this.position = position;
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| 77 | }
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| 78 | }
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[738] | 79 |
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[12421] | 80 | public enum GGA {
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[1169] | 81 | TIME(1), LATITUDE(2), LATITUDE_NAME(3), LONGITUDE(4), LONGITUDE_NAME(5),
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| 82 | /**
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[12421] | 83 | * Quality (0 = invalid, 1 = GPS, 2 = DGPS, 6 = estimanted (@since NMEA 2.3))
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[1169] | 84 | */
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| 85 | QUALITY(6), SATELLITE_COUNT(7),
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| 86 | HDOP(8), // HDOP (horizontal dilution of precision)
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| 87 | HEIGHT(9), HEIGHT_UNTIS(10), // height above NN (above geoid)
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| 88 | HEIGHT_2(11), HEIGHT_2_UNTIS(12), // height geoid - height ellipsoid (WGS84)
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[8510] | 89 | GPS_AGE(13), // Age of differential GPS data
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[1169] | 90 | REF(14); // REF station
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[738] | 91 |
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[1169] | 92 | public final int position;
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[12421] | 93 | GGA(int position) {
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[1169] | 94 | this.position = position;
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| 95 | }
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| 96 | }
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[738] | 97 |
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[12421] | 98 | public enum GSA {
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[1169] | 99 | AUTOMATIC(1),
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| 100 | FIX_TYPE(2), // 1 = not fixed, 2 = 2D fixed, 3 = 3D fixed)
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| 101 | // PRN numbers for max 12 satellites
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| 102 | PRN_1(3), PRN_2(4), PRN_3(5), PRN_4(6), PRN_5(7), PRN_6(8),
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| 103 | PRN_7(9), PRN_8(10), PRN_9(11), PRN_10(12), PRN_11(13), PRN_12(14),
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| 104 | PDOP(15), // PDOP (precision)
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| 105 | HDOP(16), // HDOP (horizontal precision)
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[8449] | 106 | VDOP(17); // VDOP (vertical precision)
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[738] | 107 |
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[1169] | 108 | public final int position;
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[12421] | 109 | GSA(int position) {
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[1169] | 110 | this.position = position;
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| 111 | }
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| 112 | }
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[738] | 113 |
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[1169] | 114 | public GpxData data;
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[738] | 115 |
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[7049] | 116 | private final SimpleDateFormat rmcTimeFmt = new SimpleDateFormat("ddMMyyHHmmss.SSS");
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| 117 | private final SimpleDateFormat rmcTimeFmtStd = new SimpleDateFormat("ddMMyyHHmmss");
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[1167] | 118 |
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[6889] | 119 | private Date readTime(String p) {
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[11553] | 120 | Date d = Optional.ofNullable(rmcTimeFmt.parse(p, new ParsePosition(0)))
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| 121 | .orElseGet(() -> rmcTimeFmtStd.parse(p, new ParsePosition(0)));
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[1381] | 122 | if (d == null)
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[11374] | 123 | throw new JosmRuntimeException("Date is malformed");
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[1381] | 124 | return d;
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| 125 | }
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| 126 |
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[1169] | 127 | // functons for reading the error stats
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| 128 | public NMEAParserState ps;
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[1167] | 129 |
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[1169] | 130 | public int getParserUnknown() {
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| 131 | return ps.unknown;
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| 132 | }
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[8510] | 133 |
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[1169] | 134 | public int getParserZeroCoordinates() {
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[8346] | 135 | return ps.zeroCoord;
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[1169] | 136 | }
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[8510] | 137 |
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[1169] | 138 | public int getParserChecksumErrors() {
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[8346] | 139 | return ps.checksumErrors+ps.noChecksum;
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[1169] | 140 | }
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[8510] | 141 |
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[1169] | 142 | public int getParserMalformed() {
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| 143 | return ps.malformed;
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| 144 | }
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[8510] | 145 |
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[1169] | 146 | public int getNumberOfCoordinates() {
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| 147 | return ps.success;
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| 148 | }
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[1167] | 149 |
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[7596] | 150 | public NmeaReader(InputStream source) throws IOException {
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[10475] | 151 | rmcTimeFmt.setTimeZone(DateUtils.UTC);
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| 152 | rmcTimeFmtStd.setTimeZone(DateUtils.UTC);
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[1167] | 153 |
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[1169] | 154 | // create the data tree
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| 155 | data = new GpxData();
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[7005] | 156 | Collection<Collection<WayPoint>> currentTrack = new ArrayList<>();
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[738] | 157 |
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[7082] | 158 | try (BufferedReader rd = new BufferedReader(new InputStreamReader(source, StandardCharsets.UTF_8))) {
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[6822] | 159 | StringBuilder sb = new StringBuilder(1024);
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[10001] | 160 | int loopstartChar = rd.read();
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[1453] | 161 | ps = new NMEAParserState();
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[10001] | 162 | if (loopstartChar == -1)
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[1169] | 163 | //TODO tell user about the problem?
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| 164 | return;
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[10001] | 165 | sb.append((char) loopstartChar);
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[8510] | 166 | ps.pDate = "010100"; // TODO date problem
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| 167 | while (true) {
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[1169] | 168 | // don't load unparsable files completely to memory
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[8510] | 169 | if (sb.length() >= 1020) {
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[2626] | 170 | sb.delete(0, sb.length()-1);
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| 171 | }
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[1169] | 172 | int c = rd.read();
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[8510] | 173 | if (c == '$') {
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[6287] | 174 | parseNMEASentence(sb.toString(), ps);
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[1169] | 175 | sb.delete(0, sb.length());
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| 176 | sb.append('$');
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[8510] | 177 | } else if (c == -1) {
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[1169] | 178 | // EOF: add last WayPoint if it works out
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[8510] | 179 | parseNMEASentence(sb.toString(), ps);
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[1169] | 180 | break;
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[2626] | 181 | } else {
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[8510] | 182 | sb.append((char) c);
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[2626] | 183 | }
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[1169] | 184 | }
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[2907] | 185 | currentTrack.add(ps.waypoints);
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| 186 | data.tracks.add(new ImmutableGpxTrack(currentTrack, Collections.<String, Object>emptyMap()));
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[1167] | 187 |
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[7596] | 188 | } catch (IllegalDataException e) {
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[6287] | 189 | Main.warn(e);
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[1169] | 190 | }
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| 191 | }
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[7037] | 192 |
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[2626] | 193 | private static class NMEAParserState {
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[7005] | 194 | protected Collection<WayPoint> waypoints = new ArrayList<>();
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[8346] | 195 | protected String pTime;
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| 196 | protected String pDate;
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| 197 | protected WayPoint pWp;
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[738] | 198 |
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[8840] | 199 | protected int success; // number of successfully parsed sentences
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| 200 | protected int malformed;
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| 201 | protected int checksumErrors;
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| 202 | protected int noChecksum;
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| 203 | protected int unknown;
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| 204 | protected int zeroCoord;
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[1169] | 205 | }
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[738] | 206 |
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[12421] | 207 | /**
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| 208 | * Determines if the given address denotes the given NMEA sentence formatter of a known talker.
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| 209 | * @param address first tag of an NMEA sentence
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| 210 | * @param formatter sentence formatter mnemonic code
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| 211 | * @return {@code true} if the {@code address} denotes the given NMEA sentence formatter of a known talker
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| 212 | */
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| 213 | static boolean isSentence(String address, Sentence formatter) {
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| 214 | for (TalkerId talker : TalkerId.values()) {
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| 215 | if (address.equals('$' + talker.name() + formatter.name())) {
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| 216 | return true;
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| 217 | }
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| 218 | }
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| 219 | return false;
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| 220 | }
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| 221 |
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[1169] | 222 | // Parses split up sentences into WayPoints which are stored
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| 223 | // in the collection in the NMEAParserState object.
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[12421] | 224 | // Returns true if the input made sense, false otherwise.
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[6287] | 225 | private boolean parseNMEASentence(String s, NMEAParserState ps) throws IllegalDataException {
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[1169] | 226 | try {
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[6287] | 227 | if (s.isEmpty()) {
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| 228 | throw new IllegalArgumentException("s is empty");
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| 229 | }
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[1167] | 230 |
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[1169] | 231 | // checksum check:
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[6296] | 232 | // the bytes between the $ and the * are xored
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[1169] | 233 | // if there is no * or other meanities it will throw
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| 234 | // and result in a malformed packet.
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| 235 | String[] chkstrings = s.split("\\*");
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[8395] | 236 | if (chkstrings.length > 1) {
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[7082] | 237 | byte[] chb = chkstrings[0].getBytes(StandardCharsets.UTF_8);
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[8510] | 238 | int chk = 0;
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[6248] | 239 | for (int i = 1; i < chb.length; i++) {
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[2626] | 240 | chk ^= chb[i];
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| 241 | }
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[8510] | 242 | if (Integer.parseInt(chkstrings[1].substring(0, 2), 16) != chk) {
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[8346] | 243 | ps.checksumErrors++;
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[8510] | 244 | ps.pWp = null;
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[1388] | 245 | return false;
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| 246 | }
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[2626] | 247 | } else {
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[8346] | 248 | ps.noChecksum++;
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[1169] | 249 | }
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| 250 | // now for the content
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| 251 | String[] e = chkstrings[0].split(",");
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| 252 | String accu;
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[1167] | 253 |
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[8346] | 254 | WayPoint currentwp = ps.pWp;
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| 255 | String currentDate = ps.pDate;
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[1167] | 256 |
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[1169] | 257 | // handle the packet content
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[12421] | 258 | if (isSentence(e[0], Sentence.GGA)) {
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[1169] | 259 | // Position
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| 260 | LatLon latLon = parseLatLon(
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[12421] | 261 | e[GGA.LATITUDE_NAME.position],
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| 262 | e[GGA.LONGITUDE_NAME.position],
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| 263 | e[GGA.LATITUDE.position],
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| 264 | e[GGA.LONGITUDE.position]
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[2626] | 265 | );
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[8510] | 266 | if (latLon == null) {
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[6287] | 267 | throw new IllegalDataException("Malformed lat/lon");
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| 268 | }
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[1167] | 269 |
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[8384] | 270 | if (LatLon.ZERO.equals(latLon)) {
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[8346] | 271 | ps.zeroCoord++;
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[1169] | 272 | return false;
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| 273 | }
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[1167] | 274 |
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[1169] | 275 | // time
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[12421] | 276 | accu = e[GGA.TIME.position];
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[1381] | 277 | Date d = readTime(currentDate+accu);
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[1167] | 278 |
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[8510] | 279 | if ((ps.pTime == null) || (currentwp == null) || !ps.pTime.equals(accu)) {
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[1169] | 280 | // this node is newer than the previous, create a new waypoint.
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[8510] | 281 | // no matter if previous WayPoint was null, we got something better now.
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| 282 | ps.pTime = accu;
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[1169] | 283 | currentwp = new WayPoint(latLon);
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| 284 | }
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[8510] | 285 | if (!currentwp.attr.containsKey("time")) {
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[1169] | 286 | // As this sentence has no complete time only use it
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| 287 | // if there is no time so far
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[9740] | 288 | currentwp.setTime(d);
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[1169] | 289 | }
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| 290 | // elevation
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[12421] | 291 | accu = e[GGA.HEIGHT_UNTIS.position];
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[8510] | 292 | if ("M".equals(accu)) {
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[2626] | 293 | // Ignore heights that are not in meters for now
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[12421] | 294 | accu = e[GGA.HEIGHT.position];
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[8510] | 295 | if (!accu.isEmpty()) {
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[1169] | 296 | Double.parseDouble(accu);
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| 297 | // if it throws it's malformed; this should only happen if the
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| 298 | // device sends nonstandard data.
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[8510] | 299 | if (!accu.isEmpty()) { // FIX ? same check
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[7518] | 300 | currentwp.put(GpxConstants.PT_ELE, accu);
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[2626] | 301 | }
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[1169] | 302 | }
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| 303 | }
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[12421] | 304 | // number of satellites
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| 305 | accu = e[GGA.SATELLITE_COUNT.position];
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[1169] | 306 | int sat = 0;
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[8510] | 307 | if (!accu.isEmpty()) {
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[1169] | 308 | sat = Integer.parseInt(accu);
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[7518] | 309 | currentwp.put(GpxConstants.PT_SAT, accu);
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[1169] | 310 | }
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| 311 | // h-dilution
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[12421] | 312 | accu = e[GGA.HDOP.position];
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[8510] | 313 | if (!accu.isEmpty()) {
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[8390] | 314 | currentwp.put(GpxConstants.PT_HDOP, Float.valueOf(accu));
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[2626] | 315 | }
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[1169] | 316 | // fix
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[12421] | 317 | accu = e[GGA.QUALITY.position];
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[8510] | 318 | if (!accu.isEmpty()) {
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[1169] | 319 | int fixtype = Integer.parseInt(accu);
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| 320 | switch(fixtype) {
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| 321 | case 0:
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[7518] | 322 | currentwp.put(GpxConstants.PT_FIX, "none");
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[1169] | 323 | break;
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| 324 | case 1:
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[8510] | 325 | if (sat < 4) {
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[7518] | 326 | currentwp.put(GpxConstants.PT_FIX, "2d");
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[2626] | 327 | } else {
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[7518] | 328 | currentwp.put(GpxConstants.PT_FIX, "3d");
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[2626] | 329 | }
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[1169] | 330 | break;
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| 331 | case 2:
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[7518] | 332 | currentwp.put(GpxConstants.PT_FIX, "dgps");
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[1169] | 333 | break;
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| 334 | default:
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| 335 | break;
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| 336 | }
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| 337 | }
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[12421] | 338 | } else if (isSentence(e[0], Sentence.VTG)) {
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[1169] | 339 | // COURSE
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[12421] | 340 | accu = e[VTG.COURSE_REF.position];
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[8510] | 341 | if ("T".equals(accu)) {
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[1169] | 342 | // other values than (T)rue are ignored
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[12421] | 343 | accu = e[VTG.COURSE.position];
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[12422] | 344 | if (!accu.isEmpty() && currentwp != null) {
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[1169] | 345 | Double.parseDouble(accu);
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[7518] | 346 | currentwp.put("course", accu);
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[1169] | 347 | }
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| 348 | }
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| 349 | // SPEED
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[12421] | 350 | accu = e[VTG.SPEED_KMH_UNIT.position];
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[8510] | 351 | if (accu.startsWith("K")) {
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[12421] | 352 | accu = e[VTG.SPEED_KMH.position];
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[12422] | 353 | if (!accu.isEmpty() && currentwp != null) {
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[1169] | 354 | double speed = Double.parseDouble(accu);
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| 355 | speed /= 3.6; // speed in m/s
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[7518] | 356 | currentwp.put("speed", Double.toString(speed));
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[1169] | 357 | }
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| 358 | }
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[12421] | 359 | } else if (isSentence(e[0], Sentence.GSA)) {
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[1169] | 360 | // vdop
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[12421] | 361 | accu = e[GSA.VDOP.position];
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[12059] | 362 | if (!accu.isEmpty() && currentwp != null) {
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[8390] | 363 | currentwp.put(GpxConstants.PT_VDOP, Float.valueOf(accu));
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[2626] | 364 | }
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[1169] | 365 | // hdop
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[12421] | 366 | accu = e[GSA.HDOP.position];
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[12059] | 367 | if (!accu.isEmpty() && currentwp != null) {
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[8390] | 368 | currentwp.put(GpxConstants.PT_HDOP, Float.valueOf(accu));
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[2626] | 369 | }
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[1169] | 370 | // pdop
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[12421] | 371 | accu = e[GSA.PDOP.position];
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[12059] | 372 | if (!accu.isEmpty() && currentwp != null) {
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[8390] | 373 | currentwp.put(GpxConstants.PT_PDOP, Float.valueOf(accu));
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[2626] | 374 | }
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[12421] | 375 | } else if (isSentence(e[0], Sentence.RMC)) {
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[1169] | 376 | // coordinates
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| 377 | LatLon latLon = parseLatLon(
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[12421] | 378 | e[RMC.WIDTH_NORTH_NAME.position],
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| 379 | e[RMC.LENGTH_EAST_NAME.position],
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| 380 | e[RMC.WIDTH_NORTH.position],
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| 381 | e[RMC.LENGTH_EAST.position]
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[2626] | 382 | );
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[8384] | 383 | if (LatLon.ZERO.equals(latLon)) {
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[8346] | 384 | ps.zeroCoord++;
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[1169] | 385 | return false;
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| 386 | }
|
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| 387 | // time
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[12421] | 388 | currentDate = e[RMC.DATE.position];
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| 389 | String time = e[RMC.TIME.position];
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[1167] | 390 |
|
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[1381] | 391 | Date d = readTime(currentDate+time);
|
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[1167] | 392 |
|
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[8510] | 393 | if (ps.pTime == null || currentwp == null || !ps.pTime.equals(time)) {
|
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[1169] | 394 | // this node is newer than the previous, create a new waypoint.
|
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[8510] | 395 | ps.pTime = time;
|
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[1169] | 396 | currentwp = new WayPoint(latLon);
|
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| 397 | }
|
---|
| 398 | // time: this sentence has complete time so always use it.
|
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[9740] | 399 | currentwp.setTime(d);
|
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[1169] | 400 | // speed
|
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[12421] | 401 | accu = e[RMC.SPEED.position];
|
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[8510] | 402 | if (!accu.isEmpty() && !currentwp.attr.containsKey("speed")) {
|
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[1169] | 403 | double speed = Double.parseDouble(accu);
|
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| 404 | speed *= 0.514444444; // to m/s
|
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[7518] | 405 | currentwp.put("speed", Double.toString(speed));
|
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[1169] | 406 | }
|
---|
| 407 | // course
|
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[12421] | 408 | accu = e[RMC.COURSE.position];
|
---|
[8510] | 409 | if (!accu.isEmpty() && !currentwp.attr.containsKey("course")) {
|
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[1169] | 410 | Double.parseDouble(accu);
|
---|
[7518] | 411 | currentwp.put("course", accu);
|
---|
[1169] | 412 | }
|
---|
[1167] | 413 |
|
---|
[1169] | 414 | // TODO fix?
|
---|
| 415 | // * Mode (A = autonom; D = differential; E = estimated; N = not valid; S
|
---|
| 416 | // * = simulated)
|
---|
| 417 | // *
|
---|
| 418 | // * @since NMEA 2.3
|
---|
| 419 | //
|
---|
| 420 | //MODE(12);
|
---|
| 421 | } else {
|
---|
| 422 | ps.unknown++;
|
---|
| 423 | return false;
|
---|
| 424 | }
|
---|
[8346] | 425 | ps.pDate = currentDate;
|
---|
[8510] | 426 | if (ps.pWp != currentwp) {
|
---|
| 427 | if (ps.pWp != null) {
|
---|
[8346] | 428 | ps.pWp.setTime();
|
---|
[1169] | 429 | }
|
---|
[8346] | 430 | ps.pWp = currentwp;
|
---|
[1169] | 431 | ps.waypoints.add(currentwp);
|
---|
| 432 | ps.success++;
|
---|
| 433 | return true;
|
---|
| 434 | }
|
---|
| 435 | return true;
|
---|
[1167] | 436 |
|
---|
[11768] | 437 | } catch (IllegalArgumentException | IndexOutOfBoundsException | IllegalDataException ex) {
|
---|
[1169] | 438 | // out of bounds and such
|
---|
[11620] | 439 | Main.debug(ex);
|
---|
[1169] | 440 | ps.malformed++;
|
---|
[8510] | 441 | ps.pWp = null;
|
---|
[1169] | 442 | return false;
|
---|
| 443 | }
|
---|
| 444 | }
|
---|
[738] | 445 |
|
---|
[10632] | 446 | private static LatLon parseLatLon(String ns, String ew, String dlat, String dlon) {
|
---|
[1169] | 447 | String widthNorth = dlat.trim();
|
---|
| 448 | String lengthEast = dlon.trim();
|
---|
[1167] | 449 |
|
---|
[1169] | 450 | // return a zero latlon instead of null so it is logged as zero coordinate
|
---|
| 451 | // instead of malformed sentence
|
---|
[9214] | 452 | if (widthNorth.isEmpty() && lengthEast.isEmpty()) return LatLon.ZERO;
|
---|
[1167] | 453 |
|
---|
[1169] | 454 | // The format is xxDDLL.LLLL
|
---|
| 455 | // xx optional whitespace
|
---|
| 456 | // DD (int) degres
|
---|
| 457 | // LL.LLLL (double) latidude
|
---|
| 458 | int latdegsep = widthNorth.indexOf('.') - 2;
|
---|
| 459 | if (latdegsep < 0) return null;
|
---|
[1167] | 460 |
|
---|
[1169] | 461 | int latdeg = Integer.parseInt(widthNorth.substring(0, latdegsep));
|
---|
| 462 | double latmin = Double.parseDouble(widthNorth.substring(latdegsep));
|
---|
[8510] | 463 | if (latdeg < 0) {
|
---|
[1388] | 464 | latmin *= -1.0;
|
---|
[2626] | 465 | }
|
---|
[1169] | 466 | double lat = latdeg + latmin / 60;
|
---|
| 467 | if ("S".equals(ns)) {
|
---|
| 468 | lat = -lat;
|
---|
| 469 | }
|
---|
[738] | 470 |
|
---|
[1169] | 471 | int londegsep = lengthEast.indexOf('.') - 2;
|
---|
| 472 | if (londegsep < 0) return null;
|
---|
[1167] | 473 |
|
---|
[1169] | 474 | int londeg = Integer.parseInt(lengthEast.substring(0, londegsep));
|
---|
| 475 | double lonmin = Double.parseDouble(lengthEast.substring(londegsep));
|
---|
[8510] | 476 | if (londeg < 0) {
|
---|
[1388] | 477 | lonmin *= -1.0;
|
---|
[2626] | 478 | }
|
---|
[1169] | 479 | double lon = londeg + lonmin / 60;
|
---|
| 480 | if ("W".equals(ew)) {
|
---|
| 481 | lon = -lon;
|
---|
| 482 | }
|
---|
| 483 | return new LatLon(lat, lon);
|
---|
| 484 | }
|
---|
[738] | 485 | }
|
---|