1 files changed, 146 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/YwtProtocolDecoder.java b/src/org/traccar/protocol/YwtProtocolDecoder.java
new file mode 100644
index 000000000..c28c7b7d7
--- /dev/null
+++ b/src/org/traccar/protocol/YwtProtocolDecoder.java
@@ -0,0 +1,146 @@
+/*
+ * 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;
+    }
+
+}