/* * Copyright 2017 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 Gt30ProtocolDecoder extends BaseProtocolDecoder { public Gt30ProtocolDecoder(Gt30Protocol protocol) { super(protocol); } private static final Pattern PATTERN = new PatternBuilder() .text("$$") .number("x{4}") // length .expression("(.{14})") // device id .number("x{4}") // type .expression("(.)?") // alarm .number("(dd)(dd)(dd).(ddd),") // time (hhmmss.sss) .expression("([AV]),") // validity .number("(d+)(dd.d+),") // latitude .expression("([NS]),") .number("(d+)(dd.d+),") // longitude .expression("([EW]),") .number("(d+.d+)?,") // speed .number("(d+.d+)?,") // course .number("(dd)(dd)(dd)") // date (ddmmyy) .expression("[^\\|]*") .number("|(d+.d+)") // hdop .number("|(-?d+)") // altitude .number("x{4}") // checksum .compile(); private String decodeAlarm(int value) { switch (value) { case 0x01: case 0x02: case 0x03: return Position.ALARM_SOS; case 0x10: return Position.ALARM_LOW_BATTERY; case 0x11: return Position.ALARM_OVERSPEED; case 0x12: return Position.ALARM_GEOFENCE; default: return null; } } @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { Parser parser = new Parser(PATTERN, (String) msg); if (!parser.matches()) { return null; } DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next().trim()); if (deviceSession == null) { return null; } Position position = new Position(); position.setProtocol(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); if (parser.hasNext()) { position.set(Position.KEY_ALARM, decodeAlarm(parser.next().charAt(0))); } DateBuilder dateBuilder = new DateBuilder() .setTime(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0), parser.nextInt(0)); position.setValid(parser.next().equals("A")); position.setLatitude(parser.nextCoordinate()); position.setLongitude(parser.nextCoordinate()); position.setSpeed(parser.nextDouble(0)); position.setCourse(parser.nextDouble(0)); dateBuilder.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0)); position.setTime(dateBuilder.getDate()); position.set(Position.KEY_HDOP, parser.next()); position.setAltitude(parser.nextDouble(0)); return position; } }