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/*
* Copyright 2014 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.Properties;
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.database.DataManager;
import org.traccar.helper.Log;
import org.traccar.model.ExtendedInfoFormatter;
import org.traccar.model.Position;
public class HaicomProtocolDecoder extends BaseProtocolDecoder {
public HaicomProtocolDecoder(DataManager dataManager, String protocol, Properties properties) {
super(dataManager, protocol, properties);
}
private static final Pattern pattern = Pattern.compile(
"\\$GPRS" +
"(\\d+)," + // IMEI
"([^,]+)," + // Version
"(\\d{2})(\\d{2})(\\d{2})," + // Date
"(\\d{2})(\\d{2})(\\d{2})," + // Time
"(\\d)" + // Flags
"(\\d{2})(\\d{5})" + // Latitude (DDMMMMM)
"(\\d{3})(\\d{5})," + // Longitude (DDDMMMMM)
"(\\d+)," + // Speed
"(\\d+)," + // Course
"(\\d+)," + // Status
"(\\d+)," + // GPRS counting value
"(\\d+)," + // GPS power saving counting value
"(\\d+)," + // Switch status
"(\\d+)" + // Relay status
"[LH]{2}" + // Power status
"\\#V(\\d+)"); // Battery
@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();
ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter(getProtocol());
Integer index = 1;
// Get device by IMEI
String imei = parser.group(index++);
try {
position.setDeviceId(getDataManager().getDeviceByImei(imei).getId());
} catch(Exception error) {
Log.warning("Unknown device - " + imei);
return null;
}
// Firmware version
extendedInfo.set("version", parser.group(index++));
// Date
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
time.clear();
time.set(Calendar.YEAR, 2000 + 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());
// Validity
int flags = Integer.valueOf(parser.group(index++));
position.setValid((flags & 0x1) != 0);
// Latitude
Double latitude = Double.valueOf(parser.group(index++));
latitude += Double.valueOf(parser.group(index++)) / 60000;
if ((flags & 0x2) == 0) latitude = -latitude;
position.setLatitude(latitude);
// Longitude
Double longitude = Double.valueOf(parser.group(index++));
longitude += Double.valueOf(parser.group(index++)) / 60000;
if ((flags & 0x4) == 0) longitude = -longitude;
position.setLongitude(longitude);
// Speed
position.setSpeed(Double.valueOf(parser.group(index++)) / 10);
// Course
position.setCourse(Double.valueOf(parser.group(index++)) / 10);
// Altitude
position.setAltitude(0.0);
// Additional data
extendedInfo.set("status", parser.group(index++));
extendedInfo.set("gprs", parser.group(index++));
extendedInfo.set("gps", parser.group(index++));
extendedInfo.set("input", parser.group(index++));
extendedInfo.set("output", parser.group(index++));
extendedInfo.set("battery", Double.valueOf(parser.group(index++)) / 10);
// Extended info
position.setExtendedInfo(extendedInfo.toString());
return position;
}
}
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