/* * Copyright 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.LinkedList; import java.util.List; import java.util.regex.Pattern; public class Tlt2hProtocolDecoder extends BaseProtocolDecoder { public Tlt2hProtocolDecoder(Tlt2hProtocol protocol) { super(protocol); } private static final Pattern PATTERN_HEADER = new PatternBuilder() .number("#(d+)#") // imei .expression("[^#]*#") .number("d+#") .expression("([^#]+)#") // status .number("d+") // number of records .compile(); private static final Pattern PATTERN_POSITION = new PatternBuilder() .number("#(x+)?") // cell info .text("$GPRMC,") .number("(dd)(dd)(dd).(d+),") // time .expression("([AV]),") // validity .number("(d+)(dd.d+),") // latitude .expression("([NS]),") .number("(d+)(dd.d+),") // longitude .number("([EW]),") .number("(d+.?d*)?,") // speed .number("(d+.?d*)?,") // course .number("(dd)(dd)(dd)") // date (ddmmyy) .any() .compile(); @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { String sentence = (String) msg; sentence = sentence.trim(); String header = sentence.substring(0, sentence.indexOf('\r')); Parser parser = new Parser(PATTERN_HEADER, header); if (!parser.matches()) { return null; } DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next()); if (deviceSession == null) { return null; } String status = parser.next(); String[] messages = sentence.substring(sentence.indexOf('\n') + 1).split("\r\n"); List<Position> positions = new LinkedList<>(); for (String message : messages) { parser = new Parser(PATTERN_POSITION, message); if (parser.matches()) { Position position = new Position(); position.setProtocol(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); parser.next(); // base station info DateBuilder dateBuilder = new DateBuilder() .setTime(parser.nextInt(), parser.nextInt(), parser.nextInt()); parser.next(); 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_STATUS, status); positions.add(position); } } return positions; } }