1 files changed, 111 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/GnxProtocolDecoder.java b/src/main/java/org/traccar/protocol/GnxProtocolDecoder.java
new file mode 100644
index 000000000..c9c221a69
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/GnxProtocolDecoder.java
@@ -0,0 +1,111 @@
+/*
+ * 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.model.Position;
+
+import java.net.SocketAddress;
+import java.util.regex.Pattern;
+
+public class GnxProtocolDecoder extends BaseProtocolDecoder {
+
+    public GnxProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    private static final Pattern PATTERN_LOCATION = new PatternBuilder()
+            .number("(d+),")                     // imei
+            .number("d+,")                       // length
+            .expression("([01]),")               // history
+            .number("(dd)(dd)(dd),")             // device time (hhmmss)
+            .number("(dd)(dd)(dd),")             // device date (ddmmyy)
+            .number("(dd)(dd)(dd),")             // fix time (hhmmss)
+            .number("(dd)(dd)(dd),")             // fix date (ddmmyy)
+            .number("(d),")                      // valid
+            .number("(dd.d+),")                  // latitude
+            .expression("([NS]),")
+            .number("(ddd.d+),")                 // longitude
+            .expression("([EW]),")
+            .compile();
+
+    private static final Pattern PATTERN_MIF = new PatternBuilder()
+            .text("$GNX_MIF,")
+            .expression(PATTERN_LOCATION.pattern())
+            .expression("[01],")                 // valid card
+            .expression("([^,]+),")              // rfid
+            .any()
+            .compile();
+
+    private static final Pattern PATTERN_OTHER = new PatternBuilder()
+            .text("$GNX_")
+            .expression("...,")
+            .expression(PATTERN_LOCATION.pattern())
+            .any()
+            .compile();
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        String sentence = (String) msg;
+        String type = sentence.substring(5, 8);
+
+        Pattern pattern;
+        if (type.equals("MIF")) {
+            pattern = PATTERN_MIF;
+        } else {
+            pattern = PATTERN_OTHER;
+        }
+
+        Parser parser = new Parser(pattern, sentence);
+        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());
+
+        if (parser.nextInt(0) == 1) {
+            position.set(Position.KEY_ARCHIVE, true);
+        }
+
+        position.setDeviceTime(parser.nextDateTime(Parser.DateTimeFormat.HMS_DMY, "GMT+5:30"));
+        position.setFixTime(parser.nextDateTime(Parser.DateTimeFormat.HMS_DMY, "GMT+5:30"));
+
+        position.setValid(parser.nextInt(0) != 0);
+
+        position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
+        position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
+
+        if (type.equals("MIF")) {
+            position.set(Position.KEY_DRIVER_UNIQUE_ID, parser.next());
+        }
+
+        return position;
+    }
+
+}