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/*
* Copyright 2012 - 2013 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.DeviceSession;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.regex.Pattern;
public class V680ProtocolDecoder extends BaseProtocolDecoder {
public V680ProtocolDecoder(V680Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.groupBegin()
.number("#(d+)#") // imei
.expression("([^#]*)#") // user
.groupEnd("?")
.number("(d+)#") // fix
.expression("([^#]+)#") // password
.expression("([^#]+)#") // event
.number("(d+)#") // packet number
.expression("([^#]+)?#?") // gsm base station
.expression("(?:[^#]+#)?")
.number("(d+)?(dd.d+),") // longitude
.expression("([EW]),")
.number("(d+)?(dd.d+),") // latitude
.expression("([NS]),")
.number("(d+.d+),") // speed
.number("(d+.?d*)?#") // course
.number("(dd)(dd)(dd)#") // date
.number("(dd)(dd)(dd)") // time
.any()
.compile();
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
sentence = sentence.trim();
if (sentence.length() == 16) {
getDeviceSession(channel, remoteAddress, sentence.substring(1, sentence.length()));
} else {
Parser parser = new Parser(PATTERN, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
DeviceSession deviceSession;
if (parser.hasNext()) {
deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
} else {
deviceSession = getDeviceSession(channel, remoteAddress);
}
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
position.set("user", parser.next());
position.setValid(parser.nextInt() > 0);
position.set("password", parser.next());
position.set(Position.KEY_EVENT, parser.next());
position.set("packet", parser.next());
position.set(Position.KEY_GSM, parser.next());
position.setLongitude(parser.nextCoordinate());
position.setLatitude(parser.nextCoordinate());
position.setSpeed(parser.nextDouble());
position.setCourse(parser.nextDouble());
int day = parser.nextInt();
int month = parser.nextInt();
if (day == 0 && month == 0) {
return null; // invalid date
}
DateBuilder dateBuilder = new DateBuilder()
.setDate(parser.nextInt(), month, day)
.setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setTime(dateBuilder.getDate());
return position;
}
return null;
}
}
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