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/*
* Copyright 2012 - 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.net.SocketAddress;
import java.util.Date;
import java.util.regex.Pattern;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.Event;
import org.traccar.model.Position;
public class T55ProtocolDecoder extends BaseProtocolDecoder {
public T55ProtocolDecoder(T55Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN_GPRMC = new PatternBuilder()
.text("$GPRMC,")
.number("(dd)(dd)(dd).?d*,") // time
.expression("([AV]),") // validity
.number("(dd)(dd.d+),") // latitude
.expression("([NS]),")
.number("(d{2,3})(dd.d+),") // longitude
.expression("([EW]),")
.number("(d+.?d*)?,") // speed
.number("(d+.?d*)?,") // course
.number("(dd)(dd)(dd),") // date
.expression("[^*]+")
.text("*")
.expression("[^,]+")
.number(",(d+)") // satellites
.number(",(d+)") // imei
.number(",(d+)").optional(3)
.any()
.compile();
private static final Pattern PATTERN_GPGGA = new PatternBuilder()
.text("$GPGGA,")
.number("(dd)(dd)(dd).?d*,") // time
.number("(d+)(dd.d+),") // latitude
.expression("([NS]),")
.number("(d+)(dd.d+),") // longitude
.expression("([EW]),")
.any()
.compile();
private static final Pattern PATTERN_GPRMA = new PatternBuilder()
.text("$GPRMA,")
.expression("([AV]),") // validity
.number("(dd)(dd.d+),") // latitude
.expression("([NS]),")
.number("(ddd)(dd.d+),") // longitude
.expression("([EW]),,,")
.number("(d+.?d*)?,") // speed
.number("(d+.?d*)?,") // course
.any()
.compile();
private static final Pattern PATTERN_TRCCR = new PatternBuilder()
.text("$TRCCR,")
.number("(dddd)(dd)(dd)") // date
.number("(dd)(dd)(dd).?d*,") // time
.expression("([AV]),") // validity
.number("(-?d+.d+),") // latitude
.number("(-?d+.d+),") // longitude
.number("(d+.d+),") // speed
.number("(d+.d+),") // course
.number("(-?d+.d+),") // altitude
.number("(d+.?d*),") // battery
.any()
.compile();
private Position position = null;
private Position decodeGprmc(String sentence, SocketAddress remoteAddress, Channel channel) {
if (channel != null) {
channel.write("OK1\r\n");
}
Parser parser = new Parser(PATTERN_GPRMC, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
if (hasDeviceId()) {
position.setDeviceId(getDeviceId());
}
DateBuilder dateBuilder = new DateBuilder()
.setTime(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());
if (parser.hasNext(3)) {
position.set(Event.KEY_SATELLITES, parser.next());
if (!identify(parser.next(), channel, remoteAddress)) {
return null;
}
position.setDeviceId(getDeviceId());
}
if (hasDeviceId()) {
return position;
} else {
this.position = position; // save position
return null;
}
}
private Position decodeGpgga(String sentence) {
Parser parser = new Parser(PATTERN_GPGGA, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(getDeviceId());
DateBuilder dateBuilder = new DateBuilder()
.setCurrentDate()
.setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setTime(dateBuilder.getDate());
position.setValid(true);
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
return position;
}
private Position decodeGprma(String sentence) {
Parser parser = new Parser(PATTERN_GPRMA, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(getDeviceId());
position.setTime(new Date());
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
position.setSpeed(parser.nextDouble());
position.setCourse(parser.nextDouble());
return position;
}
private Position decodeTrccr(String sentence) {
Parser parser = new Parser(PATTERN_TRCCR, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(getDeviceId());
DateBuilder dateBuilder = new DateBuilder()
.setDate(parser.nextInt(), parser.nextInt(), parser.nextInt())
.setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setTime(dateBuilder.getDate());
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextDouble());
position.setLongitude(parser.nextDouble());
position.setSpeed(parser.nextDouble());
position.setCourse(parser.nextDouble());
position.setAltitude(parser.nextDouble());
position.set(Event.KEY_BATTERY, parser.next());
return position;
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
if (!sentence.startsWith("$") && sentence.contains("$")) {
int index = sentence.indexOf("$");
String id = sentence.substring(0, index);
if (id.endsWith(",")) {
id = id.substring(0, id.length() - 1);
}
identify(id, channel, remoteAddress);
sentence = sentence.substring(index);
}
if (sentence.startsWith("$PGID")) {
identify(sentence.substring(6, sentence.length() - 3), channel, remoteAddress);
} else if (sentence.startsWith("$PCPTI")) {
identify(sentence.substring(7, sentence.indexOf(",", 7)), channel, remoteAddress);
} else if (sentence.startsWith("IMEI")) {
identify(sentence.substring(5, sentence.length()), channel, remoteAddress);
} else if (sentence.startsWith("$GPFID")) {
if (identify(sentence.substring(7, sentence.length()), channel, remoteAddress) && position != null) {
Position position = this.position;
position.setDeviceId(getDeviceId());
this.position = null;
return position;
}
} else if (Character.isDigit(sentence.charAt(0)) && sentence.length() == 15) {
identify(sentence, channel, remoteAddress);
} else if (sentence.startsWith("$GPRMC")) {
return decodeGprmc(sentence, remoteAddress, channel);
} else if (sentence.startsWith("$GPGGA") && hasDeviceId()) {
return decodeGpgga(sentence);
} else if (sentence.startsWith("$GPRMA") && hasDeviceId()) {
return decodeGprma(sentence);
} else if (sentence.startsWith("$TRCCR") && hasDeviceId()) {
return decodeTrccr(sentence);
}
return null;
}
}
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