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/*
* Copyright 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.helper.PatternBuilder;
import java.net.SocketAddress;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.TimeZone;
import java.util.regex.Pattern;
import org.traccar.DeviceSession;
import org.traccar.helper.Parser;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
public class SviasProtocolDecoder extends BaseProtocolDecoder {
public SviasProtocolDecoder(SviasProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("[") // delimiter init
.any()
.number("(dddddddd),") // imei
.any()
.number("(d+),") // date (yyyymmdd)
.number("(d+),") // time (hhmmss)
.number("(-?d+),") // longitude
.number("(-?d+),") // latitude
.number("(d+),") // speed
.number("(d+),") // course
.number("(d+),") // odometer
.number("(d+),") // input
.number("(d+),") // output / status
.any()
.number("(ddddd),") // main power voltage
.number("(d+),") // percentual power internal battery
.number("(d+),") // RSSID
.any()
.compile();
private double convertCoordinates(long v) {
return Double.valueOf(((float) ((((float) v / 1.0E7F)
- ((int) (v / 10000000L))) * 1.6666666666666667D)) + ((int) (v / 10000000L)));
}
@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
String sentence = (String) msg;
Object result = null;
if (!sentence.contains(":")) {
Parser parser = new Parser(PATTERN, (String) sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position(getProtocolName());
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
DateFormat dateFormat = new SimpleDateFormat("ddMMyyHHmmss");
dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
String date = String.format("%06d", parser.nextInt());
String time = String.format("%06d", parser.nextInt());
position.setTime(dateFormat.parse(date + time));
position.setLatitude(convertCoordinates(parser.nextLong()));
position.setLongitude(convertCoordinates(parser.nextLong()));
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0) / 100));
position.setCourse(parser.nextDouble(0) / 100);
position.setAltitude(0);
position.set(Position.KEY_ODOMETER, parser.nextInt());
String input = new StringBuilder(String.format("%08d",
Integer.parseInt(Integer.toString(parser.nextInt(), 2)))).reverse().toString();
String output = new StringBuilder(String.format("%08d",
Integer.parseInt(Integer.toString(parser.nextInt(), 2)))).reverse().toString();
position.set(Position.KEY_ALARM, (input.substring(0, 1).equals("1")
? Position.ALARM_SOS : null));
position.set(Position.KEY_IGNITION, input.substring(4, 5).equals("1"));
position.setValid(output.substring(0, 1).equals("1"));
position.set(Position.KEY_POWER, parser.nextDouble(0) / 1000);
position.set(Position.KEY_BATTERY_LEVEL, parser.nextInt());
position.set(Position.KEY_RSSI, parser.nextInt());
result = position;
}
if (channel != null) {
channel.write("@");
}
return result;
}
}
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