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/*
* Copyright 2017 Anton Tananaev (anton@traccar.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.traccar.protocol;
import io.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.Protocol;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.LinkedList;
import java.util.List;
import java.util.regex.Pattern;
public class M2cProtocolDecoder extends BaseProtocolDecoder {
public M2cProtocolDecoder(Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("#M2C,")
.expression("[^,]+,") // model
.expression("[^,]+,") // firmware
.number("d+,") // protocol
.number("(d+),") // imei
.number("(d+),") // index
.expression("([LH]),") // archive
.number("d+,") // priority
.number("(d+),") // event
.number("(dd)(dd)(dd),") // date (yymmdd)
.number("(dd)(dd)(dd),") // time (hhmmss)
.number("(-?d+.d+),") // latitude
.number("(-?d+.d+),") // longitude
.number("(-?d+),") // altitude
.number("(d+),") // course
.number("(d+.d+),") // speed
.number("(d+),") // satellites
.number("(d+),") // odometer
.number("(d+),") // input
.number("(d+),") // output
.number("(d+),") // power
.number("(d+),") // battery
.number("(d+),") // adc 1
.number("(d+),") // adc 2
.number("(d+.?d*),") // temperature
.any()
.compile();
private Position decodePosition(Channel channel, SocketAddress remoteAddress, String line) {
Parser parser = new Parser(PATTERN, line);
if (!parser.matches()) {
return null;
}
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_INDEX, parser.nextInt());
if (parser.next().equals("H")) {
position.set(Position.KEY_ARCHIVE, true);
}
position.set(Position.KEY_EVENT, parser.nextInt());
position.setValid(true);
position.setTime(parser.nextDateTime());
position.setLatitude(parser.nextDouble());
position.setLongitude(parser.nextDouble());
position.setAltitude(parser.nextInt());
position.setCourse(parser.nextInt());
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
position.set(Position.KEY_SATELLITES, parser.nextInt());
position.set(Position.KEY_ODOMETER, parser.nextLong());
position.set(Position.KEY_INPUT, parser.nextInt());
position.set(Position.KEY_OUTPUT, parser.nextInt());
position.set(Position.KEY_POWER, parser.nextInt() * 0.001);
position.set(Position.KEY_BATTERY, parser.nextInt() * 0.001);
position.set(Position.PREFIX_ADC + 1, parser.nextInt());
position.set(Position.PREFIX_ADC + 2, parser.nextInt());
position.set(Position.PREFIX_TEMP + 1, parser.nextDouble());
return position;
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
sentence = sentence.substring(1); // remove start symbol
List<Position> positions = new LinkedList<>();
for (String line : sentence.split("\r\n")) {
if (!line.isEmpty()) {
Position position = decodePosition(channel, remoteAddress, line);
if (position != null) {
positions.add(position);
}
}
}
return positions;
}
}
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