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/*
* Copyright 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 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.helper.UnitsConverter;
import org.traccar.model.Event;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.regex.Pattern;
public class WatchProtocolDecoder extends BaseProtocolDecoder {
public WatchProtocolDecoder(WatchProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("[")
.expression("(..)").text("*") // manufacturer
.number("(d+)").text("*") // equipment id
.number("xxxx").text("*") // length
.expression("([^,]+)") // type
.expression("(.*)") // content
.compile();
private static final Pattern PATTERN_POSITION = new PatternBuilder()
.text(",")
.number("(dd)(dd)(dd),") // date (ddmmyy)
.number("(dd)(dd)(dd),") // time
.expression("([AV]),") // validity
.number(" *-?(d+.d+),") // latitude
.expression("([NS]),")
.number(" *-?(d+.d+),") // longitude
.expression("([EW])?,")
.number("(d+.d+),") // speed
.number("(d+.?d*),") // course
.number("(d+.?d*),") // altitude
.number("(d+),") // satellites
.number("(d+),") // gsm
.number("(d+),") // battery
.number("(d+),") // steps
.number("d+,") // tumbles
.any()
.compile();
private void sendResponse(Channel channel, String manufacturer, String id, String content) {
if (channel != null) {
channel.write(String.format(
"[%s*%s*%04x*%s]", manufacturer, id, content.length(), content));
}
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
Parser parser = new Parser(PATTERN, (String) msg);
if (!parser.matches()) {
return null;
}
String manufacturer = parser.next();
String id = parser.next();
if (!identify(id, channel, remoteAddress)) {
return null;
}
String type = parser.next();
String content = parser.next();
if (type.equals("LK")) {
sendResponse(channel, manufacturer, id, "LK");
if (!content.isEmpty()) {
String[] values = content.split(",");
if (values.length >= 4) {
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(getDeviceId());
getLastLocation(position, null);
position.set(Event.KEY_BATTERY, values[3]);
return position;
}
}
} else if (type.equals("UD") || type.equals("UD2") || type.equals("AL")) {
if (type.equals("AL")) {
sendResponse(channel, manufacturer, id, "AL");
}
parser = new Parser(PATTERN_POSITION, content);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(getDeviceId());
DateBuilder dateBuilder = new DateBuilder()
.setDateReverse(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.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
position.setCourse(parser.nextDouble());
position.setAltitude(parser.nextDouble());
position.set(Event.KEY_SATELLITES, parser.nextInt());
position.set(Event.KEY_GSM, parser.nextInt());
position.set(Event.KEY_BATTERY, parser.nextInt());
position.set("steps", parser.nextInt());
return position;
} else if (type.equals("TKQ")) {
sendResponse(channel, manufacturer, id, "TKQ");
}
return null;
}
}
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