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/*
* Copyright 2012 - 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.Calendar;
import java.util.TimeZone;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.traccar.BaseProtocolDecoder;
import org.traccar.model.Position;
public class Gl100ProtocolDecoder extends BaseProtocolDecoder {
public Gl100ProtocolDecoder(Gl100Protocol protocol) {
super(protocol);
}
private static final Pattern pattern = Pattern.compile(
"\\+RESP:GT...," +
"(\\d{15})," + // IMEI
"(?:(?:\\d+," + // Number
"\\d," + // Reserved / Geofence id
"\\d)|" + // Reserved / Geofence alert
"(?:[^,]*))," + // Calling number
"([01])," + // GPS fix
"(\\d+.\\d)," + // Speed
"(\\d+)," + // Course
"(-?\\d+.\\d)," + // Altitude
"\\d*," + // GPS accuracy
"(-?\\d+.\\d+)," + // Longitude
"(-?\\d+.\\d+)," + // Latitude
"(\\d{4})(\\d{2})(\\d{2})" + // Date (YYYYMMDD)
"(\\d{2})(\\d{2})(\\d{2})," + // Time (HHMMSS)
".*");
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
String sentence = (String) msg;
// Send response
if (sentence.contains("AT+GTHBD=") && channel != null) {
String response = "+RESP:GTHBD,GPRS ACTIVE,";
response += sentence.substring(9, sentence.lastIndexOf(','));
response += '\0';
channel.write(response);
}
// 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());
// Validity
position.setValid(Integer.valueOf(parser.group(index++)) == 0);
// Position info
position.setSpeed(Double.valueOf(parser.group(index++)));
position.setCourse(Double.valueOf(parser.group(index++)));
position.setAltitude(Double.valueOf(parser.group(index++)));
position.setLongitude(Double.valueOf(parser.group(index++)));
position.setLatitude(Double.valueOf(parser.group(index++)));
// Date
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
time.clear();
time.set(Calendar.YEAR, Integer.valueOf(parser.group(index++)));
time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++)));
// Time
time.set(Calendar.HOUR_OF_DAY, Integer.valueOf(parser.group(index++)));
time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++)));
time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++)));
position.setTime(time.getTime());
return position;
}
}
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