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/*
* Copyright 2014 - 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 java.net.SocketAddress;
import java.util.regex.Pattern;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.helper.BitUtil;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.Event;
import org.traccar.model.Position;
public class MiniFinderProtocolDecoder extends BaseProtocolDecoder {
public MiniFinderProtocolDecoder(MiniFinderProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.expression("![AD],")
.number("(d+)/(d+)/(d+),") // date
.number("(d+):(d+):(d+),") // time
.number("(-?d+.d+),") // latitude
.number("(-?d+.d+),") // longitude
.number("(d+.?d*),") // speed
.number("(d+.?d*),") // course
.groupBegin()
.number("(x+),") // flags
.number("(-?d+.d+),") // altitude
.number("(d+),") // battery
.number("(d+),") // satellites in use
.number("(d+),") // satellites in view
.text("0")
.or()
.any()
.groupEnd()
.compile();
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
if (sentence.startsWith("!1")) {
identify(sentence.substring(3, sentence.length()), channel, remoteAddress);
} else if ((sentence.startsWith("!D") || sentence.startsWith("!A")) && 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()
.setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt())
.setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setTime(dateBuilder.getDate());
position.setLatitude(parser.nextDouble());
position.setLongitude(parser.nextDouble());
position.setSpeed(parser.nextDouble());
position.setCourse(parser.nextDouble());
if (position.getCourse() > 360) {
position.setCourse(0);
}
if (parser.hasNext(5)) {
int flags = parser.nextInt(16);
position.set(Event.KEY_FLAGS, flags);
position.setValid(BitUtil.check(flags, 0));
position.setAltitude(parser.nextDouble());
position.set(Event.KEY_BATTERY, parser.next());
position.set(Event.KEY_SATELLITES, parser.next());
}
return position;
}
return null;
}
}
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