1 files changed, 99 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/Tt8850ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Tt8850ProtocolDecoder.java
new file mode 100644
index 000000000..1010528c4
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/Tt8850ProtocolDecoder.java
@@ -0,0 +1,99 @@
+/*
+ * Copyright 2016 - 2018 Anton Tananaev (anton@traccar.org)
+ *
+ * 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 io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.Protocol;
+import org.traccar.helper.Parser;
+import org.traccar.helper.PatternBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.CellTower;
+import org.traccar.model.Network;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.regex.Pattern;
+
+public class Tt8850ProtocolDecoder extends BaseProtocolDecoder {
+
+    public Tt8850ProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    private static final Pattern PATTERN = new PatternBuilder()
+            .binary("0004,")
+            .number("xxxx,")
+            .expression("[01],")
+            .expression("GT...,")
+            .number("(?:[0-9A-Z]{2}xxxx)?,")     // protocol version
+            .expression("([^,]+),")              // imei
+            .any()
+            .number("(d{1,2})?,")                // gps accuracy
+            .number("(d{1,3}.d)?,")              // speed
+            .number("(d{1,3})?,")                // course
+            .number("(-?d{1,5}.d)?,")            // altitude
+            .number("(-?d{1,3}.d{6}),")          // longitude
+            .number("(-?d{1,2}.d{6}),")          // latitude
+            .number("(dddd)(dd)(dd)")            // date (yyyymmdd)
+            .number("(dd)(dd)(dd),")             // time (hhmmss)
+            .number("(0ddd)?,")                  // mcc
+            .number("(0ddd)?,")                  // mnc
+            .number("(xxxx)?,")                  // lac
+            .number("(xxxx)?,")                  // cell
+            .any()
+            .number("(dddd)(dd)(dd)")            // date (yyyymmdd)
+            .number("(dd)(dd)(dd),")             // time (hhmmss)
+            .number("(xxxx)")
+            .compile();
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        Parser parser = new Parser(PATTERN, (String) msg);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        Position position = new Position(getProtocolName());
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
+        if (deviceSession == null) {
+            return null;
+        }
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        position.setValid(true);
+        position.setAccuracy(parser.nextInt(0));
+        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0)));
+        position.setCourse(parser.nextDouble(0));
+        position.setAltitude(parser.nextDouble(0));
+        position.setLongitude(parser.nextDouble(0));
+        position.setLatitude(parser.nextDouble(0));
+
+        position.setTime(parser.nextDateTime());
+
+        if (parser.hasNext(4)) {
+            position.setNetwork(new Network(
+                    CellTower.from(parser.nextInt(0), parser.nextInt(0), parser.nextHexInt(0), parser.nextHexInt(0))));
+        }
+
+        return position;
+    }
+
+}