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/*
* Copyright 2012 - 2014 Anton Tananaev (anton.tananaev@gmail.com)
* Luis Parada (luis.parada@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.Calendar;
import java.util.TimeZone;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.model.Event;
import org.traccar.model.Position;
public class Pt502ProtocolDecoder extends BaseProtocolDecoder {
public Pt502ProtocolDecoder(Pt502Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = Pattern.compile(
".*" +
"\\$[A-Z]{3}\\d?," + // Type
"(\\d+)," + // Id
"(\\d{2})(\\d{2})(\\d{2})\\.(\\d{3})," + // Time (HHMMSS.SSS)
"([AV])," + // Validity
"(\\d{2})(\\d{2}\\.\\d{4})," + // Latitude (DDMM.MMMM)
"([NS])," +
"(\\d{3})(\\d{2}\\.\\d{4})," + // Longitude (DDDMM.MMMM)
"([EW])," +
"(\\d+\\.\\d+)?," + // Speed
"(\\d+\\.\\d+)?," + // Course
"(\\d{2})(\\d{2})(\\d{2}),,," + // Date
"./" +
"([01])+," + // Input
"([01])+/" + // Output
"([^/]+)?/" + // ADC
"(\\d+)" + // Odometer
"(?:/([^/]+)?/" + // RFID
"(\\p{XDigit}{3}))?" + // State
".*");
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
String sentence = (String) msg;
// Parse message
Matcher parser = PATTERN.matcher(sentence);
if (!parser.matches()) {
return null;
}
// Create new position
Position position = new Position();
position.setProtocol(getProtocolName());
Integer index = 1;
// Get device by IMEI
if (!identify(parser.group(index++), channel)) {
return null;
}
position.setDeviceId(getDeviceId());
// Time
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
time.clear();
time.set(Calendar.HOUR_OF_DAY, Integer.parseInt(parser.group(index++)));
time.set(Calendar.MINUTE, Integer.parseInt(parser.group(index++)));
time.set(Calendar.SECOND, Integer.parseInt(parser.group(index++)));
time.set(Calendar.MILLISECOND, Integer.parseInt(parser.group(index++)));
// Validity
position.setValid(parser.group(index++).compareTo("A") == 0);
// Latitude
Double latitude = Double.parseDouble(parser.group(index++));
latitude += Double.parseDouble(parser.group(index++)) / 60;
if (parser.group(index++).compareTo("S") == 0) {
latitude = -latitude;
}
position.setLatitude(latitude);
// Longitude
Double longitude = Double.parseDouble(parser.group(index++));
longitude += Double.parseDouble(parser.group(index++)) / 60;
if (parser.group(index++).compareTo("W") == 0) {
longitude = -longitude;
}
position.setLongitude(longitude);
// Speed
String speed = parser.group(index++);
if (speed != null) {
position.setSpeed(Double.parseDouble(speed));
}
// Course
String course = parser.group(index++);
if (course != null) {
position.setCourse(Double.parseDouble(course));
}
// Date
time.set(Calendar.DAY_OF_MONTH, Integer.parseInt(parser.group(index++)));
time.set(Calendar.MONTH, Integer.parseInt(parser.group(index++)) - 1);
time.set(Calendar.YEAR, 2000 + Integer.parseInt(parser.group(index++)));
position.setTime(time.getTime());
// IO
position.set(Event.KEY_INPUT, parser.group(index++));
position.set(Event.KEY_OUTPUT, parser.group(index++));
// ADC
String adc = parser.group(index++);
if (adc != null) {
String[] values = adc.split(",");
for (int i = 0; i < values.length; i++) {
position.set(Event.PREFIX_ADC + (i + 1), Integer.parseInt(values[i], 16));
}
}
position.set(Event.KEY_ODOMETER, parser.group(index++));
// Driver
position.set(Event.KEY_RFID, parser.group(index++));
// Other
String status = parser.group(index++);
if (status != null) {
int value = Integer.parseInt(status, 16);
position.set(Event.KEY_BATTERY, value >> 8);
position.set(Event.KEY_GSM, (value >> 4) & 0xf);
position.set(Event.KEY_SATELLITES, value & 0xf);
}
return position;
}
}
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