From 1e88580b51646da83b17e9f2a794096607b1ab97 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Thu, 5 Jan 2017 08:34:25 +1300
Subject: Implement GT30 GTP protocol

---
 src/org/traccar/protocol/Gt30ProtocolDecoder.java | 92 +++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 src/org/traccar/protocol/Gt30ProtocolDecoder.java

(limited to 'src/org/traccar/protocol/Gt30ProtocolDecoder.java')

diff --git a/src/org/traccar/protocol/Gt30ProtocolDecoder.java b/src/org/traccar/protocol/Gt30ProtocolDecoder.java
new file mode 100644
index 000000000..19d964687
--- /dev/null
+++ b/src/org/traccar/protocol/Gt30ProtocolDecoder.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2017 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 org.jboss.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.helper.DateBuilder;
+import org.traccar.helper.Parser;
+import org.traccar.helper.PatternBuilder;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.regex.Pattern;
+
+public class Gt30ProtocolDecoder extends BaseProtocolDecoder {
+
+    public Gt30ProtocolDecoder(Gt30Protocol protocol) {
+        super(protocol);
+    }
+
+    private static final Pattern PATTERN = new PatternBuilder()
+            .text("$$")
+            .number("x{4}")                      // length
+            .expression("(.{14})")               // device id
+            .number("x{4}")                      // type
+            .number("(dd)(dd)(dd).(d+),")        // time
+            .expression("([AV]),")               // validity
+            .number("(d+)(dd.d+),")              // latitude
+            .expression("([NS]),")
+            .number("(d+)(dd.d+),")              // longitude
+            .expression("([EW]),")
+            .number("(d+.d+)?,")                 // speed
+            .number("(d+.d+)?,")                 // course
+            .number("(dd)(dd)(dd)")              // date (ddmmyy)
+            .expression("[^\\|]*")
+            .number("|(d+.d+)")                  // hdop
+            .number("|(-?d+)")                   // altitude
+            .number("x{4}")                      // checksum
+            .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;
+        }
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next().trim());
+        if (deviceSession == null) {
+            return null;
+        }
+
+        Position position = new Position();
+        position.setProtocol(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        DateBuilder dateBuilder = new DateBuilder()
+                .setTime(parser.nextInt(), parser.nextInt(), parser.nextInt(), parser.nextInt());
+
+        position.setValid(parser.next().equals("A"));
+        position.setLatitude(parser.nextCoordinate());
+        position.setLongitude(parser.nextCoordinate());
+        position.setSpeed(parser.nextDouble());
+        position.setCourse(parser.nextDouble());
+
+        dateBuilder.setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt());
+        position.setTime(dateBuilder.getDate());
+
+        position.set(Position.KEY_HDOP, parser.next());
+
+        position.setAltitude(parser.nextDouble());
+
+        return position;
+    }
+
+}
-- 
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