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/*
* Copyright 2013 - 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.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.Event;
import org.traccar.model.Position;
public class SuntechProtocolDecoder extends BaseProtocolDecoder {
public SuntechProtocolDecoder(String protocol) {
super(protocol);
}
static private Pattern pattern = Pattern.compile(
"S.\\d{3}(?:\\w{3})?;" + // Header
"(?:[^;]+;)?" +
"(\\d{6,});" + // Device ID
"(?:\\d+;)?" +
"(\\d+);" + // Version
"(\\d{4})(\\d{2})(\\d{2});" + // Date (YYYYMMDD)
"(\\d{2}):(\\d{2}):(\\d{2});" + // Time (HH:MM:SS)
"(?:(\\p{XDigit}+);)?" + // Cell
"([-\\+]\\d{2}.\\d+);" + // Latitude
"([-\\+]\\d{3}.\\d+);" + // Longitude
"(\\d{3}.\\d{3});" + // Speed
"(\\d{3}.\\d{2});" + // Course
".*"); // Full format
@Override
protected Object decode(
ChannelHandlerContext ctx, Channel channel, 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(getProtocol());
int index = 1;
// Identifier
if (!identify(parser.group(index++))) {
return null;
}
position.setDeviceId(getDeviceId());
// Version
position.set(Event.KEY_VERSION, parser.group(index++));
// Date and Time
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.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());
// Cell
position.set(Event.KEY_CELL, parser.group(index++));
// Coordinates
position.setLatitude(Double.valueOf(parser.group(index++)));
position.setLongitude(Double.valueOf(parser.group(index++)));
position.setValid(true); // wrong?
// Speed
position.setSpeed(Double.valueOf(parser.group(index++)) * 0.539957);
// Course
position.setCourse(Double.valueOf(parser.group(index++)));
return position;
}
}
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