From 8f6f1aae2afb02ac9de3577798fc2e837f18a651 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Sun, 10 Feb 2013 13:08:35 +1300
Subject: Added TLT-2H protocol support

---
 src/org/traccar/protocol/Tlt2hProtocolDecoder.java | 144 +++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 src/org/traccar/protocol/Tlt2hProtocolDecoder.java

(limited to 'src/org/traccar/protocol')

diff --git a/src/org/traccar/protocol/Tlt2hProtocolDecoder.java b/src/org/traccar/protocol/Tlt2hProtocolDecoder.java
new file mode 100644
index 000000000..60f624dd6
--- /dev/null
+++ b/src/org/traccar/protocol/Tlt2hProtocolDecoder.java
@@ -0,0 +1,144 @@
+/*
+ * 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.LinkedList;
+import java.util.List;
+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 Tlt2hProtocolDecoder extends BaseProtocolDecoder {
+
+    public Tlt2hProtocolDecoder(ServerManager serverManager) {
+        super(serverManager);
+    }
+
+    /**
+     * Regular expressions pattern
+     */
+    static private Pattern pattern = Pattern.compile(
+            "#([0-9a-f]+)" +               // Cell info
+            "\\$GPRMC," +
+            "(\\d{2})(\\d{2})(\\d{2})\\.(\\d+)," + // Time (HHMMSS.SSS)
+            "([AV])," +                    // Validity
+            "(\\d{2})(\\d{2}\\.\\d+)," +   // Latitude (DDMM.MMMM)
+            "([NS])," +
+            "(\\d{3})(\\d{2}\\.\\d+)," +   // Longitude (DDDMM.MMMM)
+            "([EW])," +
+            "(\\d+\\.\\d{2})?," +          // Speed
+            "(\\d+\\.\\d{2})?," +          // Course
+            "(\\d{2})(\\d{2})(\\d{2})" +   // Date (DDMMYY)
+            ".+");                         // Other (Checksumm)
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, Object msg)
+            throws Exception {
+
+        String sentence = (String) msg;
+
+        // Get device identifier
+        String imei = sentence.substring(1, sentence.indexOf('#', 1));
+        long deviceId = 0;
+        try {
+            deviceId = getDataManager().getDeviceByImei(imei).getId();
+        } catch(Exception error) {
+            Log.warning("Unknown device - " + imei);
+            return null;
+        }
+        
+        String[] messages = sentence.substring(sentence.indexOf('\n') + 1).split("\r\n");
+        List<Position> positions = new LinkedList<Position>();
+        
+        for (String message : messages) {
+            Matcher parser = pattern.matcher(message);
+            if (parser.matches()) {
+                Position position = new Position();
+                StringBuilder extendedInfo = new StringBuilder("<protocol>tlt2h</protocol>");
+                position.setDeviceId(deviceId);
+
+                Integer index = 1;
+                
+                // Cell
+                extendedInfo.append("<cell>");
+                extendedInfo.append(parser.group(index++));
+                extendedInfo.append("</cell>");
+
+                // Time
+                Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+                time.clear();
+                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++)));
+                index += 1; // Skip milliseconds
+
+                // 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);
+
+                // Speed
+                String speed = parser.group(index++);
+                if (speed != null) {
+                    position.setSpeed(Double.valueOf(speed));
+                } else {
+                    position.setSpeed(0.0);
+                }
+
+                // Course
+                String course = parser.group(index++);
+                if (course != null) {
+                    position.setCourse(Double.valueOf(course));
+                } else {
+                    position.setCourse(0.0);
+                }
+
+                // Date
+                time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++)));
+                time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
+                time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++)));
+                position.setTime(time.getTime());
+
+                // Altitude
+                position.setAltitude(0.0);
+                
+                position.setExtendedInfo(extendedInfo.toString());
+                positions.add(position);
+            }
+        }
+
+        return positions;
+    }
+
+}
-- 
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