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/*
* Copyright 2012 - 2018 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.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.regex.Pattern;
public class FalcomProtocolDecoder extends BaseProtocolDecoder {
public FalcomProtocolDecoder(Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("$T0001,")
.number("(d+),") // event (int)
.number("(dd).(dd).(dddd),") // date (31.12.2019)
.number("(dd):(dd):(dd),") // time (11:22:33)
.number("(-?d+.d+),") // latitude (d.d)
.number("(-?d+.d+),") // longitude (d.d)
.number("(d+),") // speed (int)
.number("(d+.d+),") // course (double)
.number("(d+),") // fix (int)
.number("(d+),") // satellites (int)
.number("(d+.d+),") // power (double)
.number("(d+),") // ignition (int)
.number("(x+)*") // ignition (int)
//.expression("([0-9a-fA-F]{8})*") // driverkey
.any()
.compile();
private Position decodeT0001(DeviceSession deviceSession, String sentence) {
Parser parser = new Parser(PATTERN, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_EVENT, parser.nextInt(0));
DateBuilder dateBuilder = new DateBuilder()
.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0))
.setTime(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
position.setTime(dateBuilder.getDate());
position.setLatitude(parser.nextDouble());
position.setLongitude(parser.nextDouble());
position.setSpeed(parser.nextInt(0) * 1.94384449); //m/s to knot
position.setCourse(Math.round(parser.nextDouble()));
position.setValid(parser.nextInt() > 0);
position.set(Position.KEY_SATELLITES, Math.round(parser.nextInt()));
position.set(Position.KEY_POWER, parser.nextDouble());
position.set(Position.KEY_IGNITION, parser.nextInt() == 1);
position.set(Position.KEY_DRIVER_UNIQUE_ID, parser.next());
return position;
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
DeviceSession deviceSession;
if (!sentence.startsWith("$") && sentence.contains("$")) {
int index = sentence.indexOf("$");
String id = sentence.substring(0, index);
if (id.endsWith(",")) {
id = id.substring(0, id.length() - 1);
} else if (id.endsWith("/")) {
id = id.substring(id.indexOf('/') + 1, id.length() - 1);
}
deviceSession = getDeviceSession(channel, remoteAddress, id);
sentence = sentence.substring(index);
} else {
deviceSession = getDeviceSession(channel, remoteAddress);
}
if (sentence.startsWith("$IMEI")) {
getDeviceSession(channel, remoteAddress, sentence.substring(6));
} else if (sentence.startsWith("$T0001")) {
return decodeT0001(deviceSession, sentence);
}
return null;
}
}
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