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/*
* Copyright 2013 - 2015 Anton Tananaev (anton.tananaev@gmail.com)
*
* 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.DateBuilder;
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.regex.Pattern;
public class SuntechProtocolDecoder extends BaseProtocolDecoder {
public SuntechProtocolDecoder(SuntechProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.expression("S.")
.number("ddd")
.expression("(?:[A-Z]{3})?;") // header
.expression("([^;]+);").optional() // type
.number("(d{6,});") // device id
.number("d+;").optional()
.number("(d+);") // version
.number("(dddd)(dd)(dd);") // date
.number("(dd):(dd):(dd);") // time
.number("(x+);").optional() // cell
.number("([-+]dd.d+);") // latitude
.number("([-+]ddd.d+);") // longitude
.number("(ddd.ddd);") // speed
.number("(ddd.dd);") // course
.number("d+;").optional()
.number("(d+.d+)?") // battery
.any() // full format
.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());
if (parser.hasNext()) {
String type = parser.next();
if (type.equals("Alert") || type.equals("Emergency")) {
position.set(Position.KEY_ALARM, true);
}
}
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_VERSION, parser.next());
DateBuilder dateBuilder = new DateBuilder()
.setDate(parser.nextInt(), parser.nextInt(), parser.nextInt())
.setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setTime(dateBuilder.getDate());
parser.next(); // location code + bsic
position.setValid(true);
position.setLatitude(parser.nextDouble());
position.setLongitude(parser.nextDouble());
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
position.setCourse(parser.nextDouble());
position.set(Position.KEY_BATTERY, parser.next());
return position;
}
}
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