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-rw-r--r--src/org/traccar/protocol/YwtProtocolDecoder.java146
1 files changed, 146 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/YwtProtocolDecoder.java b/src/org/traccar/protocol/YwtProtocolDecoder.java
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+++ b/src/org/traccar/protocol/YwtProtocolDecoder.java
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+/*
+ * Copyright 2013 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.BaseProtocolDecoder;
+import org.traccar.ServerManager;
+import org.traccar.helper.Log;
+import org.traccar.model.Position;
+
+public class YwtProtocolDecoder extends BaseProtocolDecoder {
+
+ public YwtProtocolDecoder(ServerManager serverManager) {
+ super(serverManager);
+ }
+
+ /**
+ * Regular expressions pattern
+ */
+ //%GP,3000012345:0,090723182813,E114.602345,N22.069725,,30,160,4,0,00,,2794-10FF-46000,3>0-0
+ static private Pattern pattern = Pattern.compile(
+ "%(..)," + // Type
+ "(\\d+):" + // Unit identifier
+ "\\d+," + // Subtype
+ "(\\d{2})(\\d{2})(\\d{2})" + // Date (YYMMDD)
+ "(\\d{2})(\\d{2})(\\d{2})," + // Time (HHMMSS)
+ "([EW])" +
+ "(\\d{3}\\.\\d{6})," + // Longitude (DDDMM.MMMM)
+ "([NS])" +
+ "(\\d{2}\\.\\d{6})," + // Latitude (DDMM.MMMM)
+ "(\\d+)?," + // Altitude
+ "(\\d+)," + // Speed
+ "(\\d+)," + // Course
+ "(\\d+)," + // Satellite
+ "([^,]+)," + // Report identifier
+ "([0-9a-fA-F\\-]+)" + // Status
+ ".*");
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, Object msg)
+ throws Exception {
+
+ String sentence = (String) msg;
+
+ // Parse message
+ Matcher parser = pattern.matcher(sentence);
+ if (!parser.matches()) {
+ return null;
+ }
+
+ // Create new position
+ Position position = new Position();
+ StringBuilder extendedInfo = new StringBuilder("<protocol>ywt</protocol>");
+ Integer index = 1;
+ String type = parser.group(index++);
+
+ // Device
+ String id = parser.group(index++);
+ try {
+ position.setDeviceId(getDataManager().getDeviceByImei(id).getId());
+ } catch(Exception error) {
+ Log.warning("Unknown device - " + id);
+ return null;
+ }
+
+ // Time
+ 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.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++)));
+ position.setTime(time.getTime());
+
+ // Longitude
+ String hemisphere = parser.group(index++);
+ Double lonlitude = Double.valueOf(parser.group(index++));
+ if (hemisphere.compareTo("W") == 0) lonlitude = -lonlitude;
+ position.setLongitude(lonlitude);
+
+ // Latitude
+ hemisphere = parser.group(index++);
+ Double latitude = Double.valueOf(parser.group(index++));
+ if (hemisphere.compareTo("S") == 0) latitude = -latitude;
+ position.setLatitude(latitude);
+
+ // Altitude
+ String altitude = parser.group(index++);
+ if (altitude != null) {
+ position.setAltitude(Double.valueOf(altitude));
+ } else {
+ position.setAltitude(0.0);
+ }
+
+ // Speed
+ position.setSpeed(Double.valueOf(parser.group(index++)));
+
+ // Course
+ position.setCourse(Double.valueOf(parser.group(index++)));
+
+ // Satellites
+ int satellites = Integer.valueOf(parser.group(index++));
+ position.setValid(satellites >= 3);
+ extendedInfo.append("<satellites>").append(satellites).append("</satellites>");
+
+ // Report identifier
+ String reportId = parser.group(index++);
+
+ // Status
+ extendedInfo.append("<status>");
+ extendedInfo.append(parser.group(index++));
+ extendedInfo.append("</status>");
+
+ // Send response
+ if (type.equals("KP") || type.equals("EP") || type.equals("EP")) {
+ if (channel != null) {
+ channel.write("%AT+" + type + "=" + reportId + "\r\n");
+ }
+ }
+
+ position.setExtendedInfo(extendedInfo.toString());
+ return position;
+ }
+
+}