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/*
* Copyright 2019 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.NetworkMessage;
import org.traccar.Protocol;
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 NeosProtocolDecoder extends BaseProtocolDecoder {
public NeosProtocolDecoder(Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text(">")
.number("(d{8}),") // id
.number("d+,") // status
.number("([01]),") // valid
.number("(dd)(dd)(dd),") // date (yymmdd)
.number("(dd)(dd)(dd),") // time (hhmmss)
.expression("([EW])")
.number("(d+)(dd.d+),") // longitude
.expression("([NS])")
.number("(d+)(dd.d+),") // latitude
.expression("[^,]*,") // response
.number("(d+),") // speed
.number("(d+),") // course
.number("(d+),") // rssi
.expression("[^,]*,") // event data
.number("(d+)-") // adc
.number("(d+),") // battery
.number("0,")
.number("d,")
.number("([01]{8})") // input
.text("*")
.number("xx!")
.compile();
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
if (channel != null) {
channel.writeAndFlush(new NetworkMessage("$OK!", remoteAddress));
}
Parser parser = new Parser(PATTERN, (String) msg);
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.setValid(parser.nextInt() > 0);
position.setTime(parser.nextDateTime());
position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
position.setSpeed(parser.nextInt());
position.setCourse(parser.nextInt());
position.set(Position.KEY_RSSI, parser.nextInt());
position.set(Position.PREFIX_ADC + 1, parser.nextInt());
position.set(Position.KEY_BATTERY_LEVEL, parser.nextInt());
position.set(Position.KEY_INPUT, parser.nextBinInt());
return position;
}
}
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