From 24b6fb1778d4d5c8835974fca92c00558323e0e2 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Sun, 3 Nov 2013 11:36:58 +1300
Subject: Implement Sanav protocol (fix #421)

---
 src/org/traccar/protocol/SanavProtocolDecoder.java | 125 +++++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 src/org/traccar/protocol/SanavProtocolDecoder.java

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

diff --git a/src/org/traccar/protocol/SanavProtocolDecoder.java b/src/org/traccar/protocol/SanavProtocolDecoder.java
new file mode 100644
index 000000000..681540746
--- /dev/null
+++ b/src/org/traccar/protocol/SanavProtocolDecoder.java
@@ -0,0 +1,125 @@
+/*
+ * 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.text.ParseException;
+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.ExtendedInfoFormatter;
+import org.traccar.model.Position;
+
+public class SanavProtocolDecoder extends BaseProtocolDecoder {
+
+    public SanavProtocolDecoder(ServerManager serverManager) {
+        super(serverManager);
+    }
+
+    private static final Pattern pattern = Pattern.compile(
+            ".*imei[:=]" +
+            "(\\d+)" +                          // IMEI
+            "&?rmc[:=]\\$GPRMC," +
+            "(\\d{2})(\\d{2})(\\d{2}).(\\d+)," + // Time (HHMMSS.SSS)
+            "([AV])," +                         // Validity
+            "(\\d+)(\\d{2}\\.\\d+)," +          // Latitude (DDMM.MMMM)
+            "([NS])," +
+            "(\\d+)(\\d{2}\\.\\d+)," +          // Longitude (DDDMM.MMMM)
+            "([EW])," +
+            "(\\d+\\.\\d+)," +                  // Speed
+            "(\\d+\\.\\d+)?," +                 // Course
+            "(\\d{2})(\\d{2})(\\d{2})," +       // Date (DDMMYY)
+            ".*");
+
+    @Override
+    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();
+        ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("sanav");
+        Integer index = 1;
+
+        // Identification
+        String imei = parser.group(index++);
+        try {
+            position.setDeviceId(getDataManager().getDeviceByImei(imei).getId());
+        } catch(Exception error) {
+            Log.warning("Unknown device - " + imei);
+            return null;
+        }
+
+        // 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++)));
+        time.set(Calendar.MILLISECOND, Integer.valueOf(parser.group(index++)));
+
+        // Validity
+        position.setValid(parser.group(index++).compareTo("A") == 0);
+
+        // 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 longitude = Double.valueOf(parser.group(index++));
+        longitude += Double.valueOf(parser.group(index++)) / 60;
+        if (parser.group(index++).compareTo("W") == 0) longitude = -longitude;
+        position.setLongitude(longitude);
+
+        // Altitude
+        position.setAltitude(0.0);
+
+        // Speed
+        position.setSpeed(Double.valueOf(parser.group(index++)));
+
+        // 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());
+
+        position.setExtendedInfo(extendedInfo.toString());
+        return position;
+    }
+
+}
-- 
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