1 files changed, 151 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/MeitrackProtocolDecoder.java b/src/org/traccar/protocol/MeitrackProtocolDecoder.java
new file mode 100644
index 000000000..6bb9a915f
--- /dev/null
+++ b/src/org/traccar/protocol/MeitrackProtocolDecoder.java
@@ -0,0 +1,151 @@
+/*
+ * 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.helper.Log;
+import org.traccar.model.DataManager;
+import org.traccar.model.Position;
+
+/**
+ * Meitrack protocol decoder
+ */
+public class MeitrackProtocolDecoder extends GenericProtocolDecoder {
+
+    /**
+     * Initialize
+     */
+    public MeitrackProtocolDecoder(DataManager dataManager) {
+        super(dataManager);
+    }
+
+    /**
+     * Regular expressions pattern
+     */
+    static private Pattern pattern = Pattern.compile(
+            "\\$\\$." +                         // Flag
+            "\\d+," +                           // Length
+            "(\\d+)," +                         // IMEI
+            "[0-9a-fA-F]{3}," +                 // Command
+            "(\\d+)," +                         // Event
+            "(-?\\d+\\.\\d+)," +                // Latitude
+            "(-?\\d+\\.\\d+)," +                // Longitude
+            "(\\d{2})(\\d{2})(\\d{2})" +        // Date (YYMMDD)
+            "(\\d{2})(\\d{2})(\\d{2})," +       // Time (HHMMSS)
+            "([AV])," +                         // Validity
+            "(\\d+)," +                         // Satellites
+            "(\\d+)," +                         // GSM Signal
+            "(\\d+)," +                         // Speed
+            "(\\d+)," +                         // Course
+            "(\\d+)," +                         // HDOP
+            "(\\d+)," +                         // Altitude
+            "(\\d+)," +                         // Milage
+            ".*"); // TODO: parse other stuff
+
+    /**
+     * Decode message
+     */
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+
+        // Parse message
+        String sentence = (String) msg;
+        Matcher parser = pattern.matcher(sentence);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        // Create new position
+        Position position = new Position();
+        StringBuilder extendedInfo = new StringBuilder("<protocol>meitrack</protocol>");
+
+        Integer index = 1;
+
+        // Get device by IMEI
+        String imei = parser.group(index++);
+        try {
+            position.setDeviceId(getDataManager().getDeviceByImei(imei).getId());
+        } catch(Exception error) {
+            Log.warning("Unknown device - " + imei);
+            return null;
+        }
+
+        // Event
+        extendedInfo.append("<event>");
+        extendedInfo.append(parser.group(index++));
+        extendedInfo.append("</event>");
+        
+        // Coordinates
+        position.setLatitude(Double.valueOf(parser.group(index++)));
+        position.setLongitude(Double.valueOf(parser.group(index++)));
+        
+        // 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());
+        
+        // Validity
+        position.setValid(parser.group(index++).compareTo("A") == 0 ? true : false);
+        
+        // Satellites
+        extendedInfo.append("<satellites>");
+        extendedInfo.append(parser.group(index++));
+        extendedInfo.append("</satellites>");
+
+        // GSM Signal
+        extendedInfo.append("<gsm>");
+        extendedInfo.append(parser.group(index++));
+        extendedInfo.append("</gsm>");
+
+        // Speed
+        position.setSpeed(Double.valueOf(parser.group(index++)));
+
+        // Course
+        position.setCourse(Double.valueOf(parser.group(index++)));
+
+        // HDOP
+        extendedInfo.append("<hdop>");
+        extendedInfo.append(parser.group(index++));
+        extendedInfo.append("</hdop>");
+
+        // Altitude
+        position.setAltitude(Double.valueOf(parser.group(index++)));
+        
+        // Milage
+        extendedInfo.append("<milage>");
+        extendedInfo.append(parser.group(index++));
+        extendedInfo.append("</milage>");
+
+        // Extended info
+        position.setExtendedInfo(extendedInfo.toString());
+
+        return position;
+    }
+
+}