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/*
* Copyright 2012 - 2015 Anton Tananaev (anton.tananaev@gmail.com)
* Copyright 2012 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 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 Pt502ProtocolDecoder extends BaseProtocolDecoder {
public Pt502ProtocolDecoder(Pt502Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.any().text("$")
.expression("[A-Z]{3}")
.number("d?,") // type
.number("(d+),") // id
.number("(dd)(dd)(dd).(ddd),") // time
.expression("([AV]),") // validity
.number("(dd)(dd.dddd),") // latitude
.expression("([NS]),")
.number("(ddd)(dd.dddd),") // longitude
.expression("([EW]),")
.number("(d+.d+)?,") // speed
.number("(d+.d+)?,") // course
.number("(dd)(dd)(dd),,,") // date
.expression("./")
.expression("([01])+,") // input
.expression("([01])+/") // output
.expression("([^/]+)?/") // adc
.number("(d+)") // odometer
.expression("/([^/]+)?/") // rfid
.number("(xxx)").optional(2) // state
.any()
.compile();
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
if (sentence.startsWith("$PHO")) {
if (channel != null) {
channel.write("#PHD0," + sentence.substring(4));
}
return null;
}
Parser parser = new Parser(PATTERN, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
DateBuilder dateBuilder = new DateBuilder()
.setTime(parser.nextInt(), parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
position.setSpeed(parser.nextDouble());
position.setCourse(parser.nextDouble());
dateBuilder.setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setTime(dateBuilder.getDate());
position.set(Position.KEY_INPUT, parser.next());
position.set(Position.KEY_OUTPUT, parser.next());
if (parser.hasNext()) {
String[] values = parser.next().split(",");
for (int i = 0; i < values.length; i++) {
position.set(Position.PREFIX_ADC + (i + 1), Integer.parseInt(values[i], 16));
}
}
position.set(Position.KEY_ODOMETER, parser.nextInt());
position.set(Position.KEY_RFID, parser.next());
if (parser.hasNext()) {
int value = parser.nextInt(16);
position.set(Position.KEY_BATTERY, value >> 8);
position.set(Position.KEY_GSM, (value >> 4) & 0xf);
position.set(Position.KEY_SATELLITES, value & 0xf);
}
return position;
}
}
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