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/*
* Copyright 2013 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 java.net.SocketAddress;
import java.util.regex.Pattern;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.Position;
public class Tk102ProtocolDecoder extends BaseProtocolDecoder {
public Tk102ProtocolDecoder(Tk102Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.txt("[")
.xpr(".")
.num("d{10}")
.xpr(".")
.txt("(")
.xpr("[A-Z]+")
.num("(dd)(dd)(dd)") // Time (HHMMSS)
.xpr("([AV])") // Validity
.num("(dd)(dd.dddd)([NS])") // Latitude (DDMM.MMMM)
.num("(ddd)(dd.dddd)([EW])") // Longitude (DDDMM.MMMM)
.num("(ddd.ddd)") // Speed
.num("(dd)(dd)(dd)") // Date (DDMMYY)
.num("d+")
.any()
.txt(")")
.opt("]")
.compile();
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
if (sentence.startsWith("[!")) {
if (!identify(sentence.substring(14, 14 + 15), channel)) {
return null;
}
if (channel != null) {
channel.write("[”0000000001" + sentence.substring(13) + "]");
}
} else if (hasDeviceId()) {
Parser parser = new Parser(PATTERN, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(getDeviceId());
DateBuilder dateBuilder = new DateBuilder()
.setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
position.setSpeed(parser.nextDouble());
dateBuilder.setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setTime(dateBuilder.getDate());
return position;
}
return null;
}
}
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