/* * Copyright 2012 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.util.Calendar; import java.util.TimeZone; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.jboss.netty.channel.Channel; import org.jboss.netty.channel.ChannelHandlerContext; import org.traccar.GenericProtocolDecoder; import org.traccar.model.DataManager; import org.traccar.model.Position; /** * Gps 103 tracker protocol decoder */ public class Gps103ProtocolDecoder extends GenericProtocolDecoder { /** * Initialize */ public Gps103ProtocolDecoder(DataManager dataManager, Integer resetDelay) { super(dataManager, resetDelay); } /** * Regular expressions pattern */ static private Pattern pattern = Pattern.compile( "imei:" + "([\\d]+)," + // IMEI "([^,]+)," + // Alarm "(\\d{2})(\\d{2})(\\d{2})[\\d]+," + // Date "[^,]*," + "[FL]," + // F - full / L - low "([\\d]{2})([\\d]{2})([\\d]{2}).([\\d]{3})," + // Time (HHMMSS.SSS) "([AV])," + // Validity "([\\d]{2})([\\d]{2}.[\\d]{4})," + // Latitude (DDMM.MMMM) "([NS])," + "([\\d]{3})([\\d]{2}.[\\d]{4})," + // Longitude (DDDMM.MMMM) "([EW])," + "([\\d]+.[\\d]{2})," + // Speed ".*"); /** * Decode message */ protected Object decode( ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception { String sentence = (String) msg; // Send response #1 if (sentence.contains("##")) { channel.write("LOAD"); return null; } // Send response #2 if (sentence.length() == 15 && Character.isDigit(sentence.charAt(0))) { channel.write("ON"); return null; } // Parse message Matcher parser = pattern.matcher(sentence); if (!parser.matches()) { return null; } // Create new position Position position = new Position(); StringBuilder extendedInfo = new StringBuilder("<protocol>gps103</protocol>"); Integer index = 1; // Get device by IMEI String imei = parser.group(index++); position.setDeviceId(getDataManager().getDeviceByImei(imei).getId()); // Alarm message extendedInfo.append("<alarm>"); extendedInfo.append(parser.group(index++)); extendedInfo.append("</alarm>"); // Date Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC")); time.clear(); time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++))); time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1); time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++))); // Time time.set(Calendar.HOUR, Integer.valueOf(parser.group(index++))); time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++))); time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++))); time.set(Calendar.MILLISECOND, Integer.valueOf(parser.group(index++))); position.setTime(time.getTime()); // Validity position.setValid(parser.group(index++).compareTo("A") == 0 ? true : false); // Latitude Double latitude = Double.valueOf(parser.group(index++)); latitude += Double.valueOf(parser.group(index++)) / 60; if (parser.group(index++).compareTo("S") == 0) latitude = -latitude; position.setLatitude(latitude); // Longitude Double lonlitude = Double.valueOf(parser.group(index++)); lonlitude += Double.valueOf(parser.group(index++)) / 60; if (parser.group(index++).compareTo("W") == 0) lonlitude = -lonlitude; position.setLongitude(lonlitude); // Altitude position.setAltitude(0.0); // Speed position.setSpeed(Double.valueOf(parser.group(index++))); position.setCourse(0.0); // Extended info position.setExtendedInfo(extendedInfo.toString()); return position; } }