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/*
* Copyright 2013 - 2015 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 org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
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 EasyTrackProtocolDecoder extends BaseProtocolDecoder {
public EasyTrackProtocolDecoder(EasyTrackProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("*").expression("..,") // manufacturer
.number("(d+),") // imei
.expression("([^,]{2}),") // command
.expression("([AV]),") // validity
.number("(xx)") // year
.number("(xx)") // month
.number("(xx),") // day
.number("(xx)") // hours
.number("(xx)") // minutes
.number("(xx),") // seconds
.number("(x)")
.number("(x{7}),") // latitude
.number("(x)")
.number("(x{7}),") // longitude
.number("(x{4}),") // speed
.number("(x{4}),") // course
.number("(x{8}),") // status
.number("(x+),") // signal
.number("(d+),") // power
.number("(x{4}),") // oil
.number("(x+),?") // odometer
.number("(d+)?") // altitude
.any()
.compile();
@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();
position.setProtocol(getProtocolName());
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
position.set("command", parser.next());
position.setValid(parser.next().equals("A"));
DateBuilder dateBuilder = new DateBuilder()
.setDate(parser.nextInt(16), parser.nextInt(16), parser.nextInt(16))
.setTime(parser.nextInt(16), parser.nextInt(16), parser.nextInt(16));
position.setTime(dateBuilder.getDate());
if (BitUtil.check(parser.nextInt(16), 3)) {
position.setLatitude(-parser.nextInt(16) / 600000.0);
} else {
position.setLatitude(parser.nextInt(16) / 600000.0);
}
if (BitUtil.check(parser.nextInt(16), 3)) {
position.setLongitude(-parser.nextInt(16) / 600000.0);
} else {
position.setLongitude(parser.nextInt(16) / 600000.0);
}
position.setSpeed(parser.nextInt(16) / 100.0);
position.setCourse(parser.nextInt(16) / 100.0);
position.set(Position.KEY_STATUS, parser.next());
position.set("signal", parser.next());
position.set(Position.KEY_POWER, parser.nextDouble());
position.set("oil", parser.nextInt(16));
position.set(Position.KEY_ODOMETER, parser.nextInt(16) * 100);
position.setAltitude(parser.nextDouble());
return position;
}
}
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