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/*
* Copyright 2016 - 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.session.DeviceSession;
import org.traccar.Protocol;
import org.traccar.helper.BitUtil;
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 KenjiProtocolDecoder extends BaseProtocolDecoder {
public KenjiProtocolDecoder(Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text(">")
.number("C(d{6}),") // device id
.number("M(x{6}),") // alarm
.number("O(x{4}),") // output
.number("I(x{4}),") // input
.number("D(dd)(dd)(dd),") // time (hhmmss)
.expression("([AV]),") // valid
.number("([NS])(dd)(dd.d+),") // latitude
.number("([EW])(ddd)(dd.d+),") // longitude
.number("T(d+.d+),") // speed
.number("H(d+.d+),") // course
.number("Y(dd)(dd)(dd),") // date (ddmmyy)
.number("G(d+)") // satellites
.any()
.compile();
private String decodeAlarm(int value) {
if (BitUtil.check(value, 2)) {
return Position.ALARM_SOS;
}
if (BitUtil.check(value, 4)) {
return Position.ALARM_LOW_BATTERY;
}
if (BitUtil.check(value, 6)) {
return Position.ALARM_MOVEMENT;
}
if (BitUtil.check(value, 1) || BitUtil.check(value, 10) || BitUtil.check(value, 11)) {
return Position.ALARM_VIBRATION;
}
return null;
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
Parser parser = new Parser(PATTERN, (String) msg);
if (!parser.matches()) {
return null;
}
Position position = new Position(getProtocolName());
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_ALARM, decodeAlarm(parser.nextHexInt(0)));
position.set(Position.KEY_OUTPUT, parser.nextHexInt(0));
position.set(Position.KEY_INPUT, parser.nextHexInt(0));
DateBuilder dateBuilder = new DateBuilder()
.setTime(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
position.setSpeed(parser.nextDouble(0));
position.setCourse(parser.nextDouble(0));
dateBuilder.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
position.setTime(dateBuilder.getDate());
position.set(Position.KEY_SATELLITES, parser.nextInt(0));
return position;
}
}
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