1 files changed, 132 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/PretraceProtocolDecoder.java b/src/main/java/org/traccar/protocol/PretraceProtocolDecoder.java
new file mode 100644
index 000000000..a19384e62
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/PretraceProtocolDecoder.java
@@ -0,0 +1,132 @@
+/*
+ * Copyright 2017 - 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.Position;
+
+import java.net.SocketAddress;
+import java.util.regex.Pattern;
+
+public class PretraceProtocolDecoder extends BaseProtocolDecoder {
+
+    public PretraceProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    private static final Pattern PATTERN = new PatternBuilder()
+            .text("(")
+            .number("(d{15})")                   // imei
+            .number("Uddd")                      // type
+            .number("d")                         // gps type
+            .expression("([AV])")                // validity
+            .number("(dd)(dd)(dd)")              // date (yymmdd)
+            .number("(dd)(dd)(dd)")              // time (hhmmss)
+            .number("(dd)(dd.dddd)")             // latitude
+            .expression("([NS])")
+            .number("(ddd)(dd.dddd)")            // longitude
+            .expression("([EW])")
+            .number("(ddd)")                     // speed
+            .number("(ddd)")                     // course
+            .number("(xxx)")                     // altitude
+            .number("(x{8})")                    // odometer
+            .number("(x)")                       // satellites
+            .number("(dd)")                      // hdop
+            .number("(dd)")                      // gsm
+            .expression("(.{8}),&")              // state
+            .expression("(.+)?")                 // optional data
+            .text("^")
+            .number("xx")                        // 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());
+        if (deviceSession == null) {
+            return null;
+        }
+
+        Position position = new Position(getProtocolName());
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        position.setValid(parser.next().equals("A"));
+
+        position.setTime(parser.nextDateTime());
+
+        position.setLatitude(parser.nextCoordinate());
+        position.setLongitude(parser.nextCoordinate());
+        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextInt(0)));
+        position.setCourse(parser.nextInt(0));
+        position.setAltitude(parser.nextHexInt(0));
+
+        position.set(Position.KEY_ODOMETER, parser.nextHexInt(0));
+        position.set(Position.KEY_SATELLITES, parser.nextHexInt(0));
+        position.set(Position.KEY_HDOP, parser.nextInt(0));
+        position.set(Position.KEY_RSSI, parser.nextInt(0));
+
+        parser.next(); // state
+
+        if (parser.hasNext()) {
+            for (String value : parser.next().split(",")) {
+                switch (value.charAt(0)) {
+                    case 'P':
+                        if (value.charAt(1) == '1') {
+                            if (value.charAt(4) == '%') {
+                                position.set(Position.KEY_BATTERY_LEVEL, Integer.parseInt(value.substring(2, 4)));
+                            } else {
+                                position.set(Position.KEY_BATTERY, Integer.parseInt(value.substring(2), 16) * 0.01);
+                            }
+                        } else {
+                            position.set(Position.KEY_POWER, Integer.parseInt(value.substring(2), 16) * 0.01);
+                        }
+                        break;
+                    case 'T':
+                        double temperature = Integer.parseInt(value.substring(2), 16) * 0.25;
+                        if (value.charAt(1) == '1') {
+                            position.set(Position.KEY_DEVICE_TEMP, temperature);
+                        } else {
+                            position.set(Position.PREFIX_TEMP + (value.charAt(1) - '0'), temperature);
+                        }
+                        break;
+                    case 'F':
+                        position.set("fuel" + (value.charAt(1) - '0'), Integer.parseInt(value.substring(2), 16) * 0.01);
+                        break;
+                    case 'R':
+                        position.set(Position.KEY_DRIVER_UNIQUE_ID, value.substring(3));
+                        break;
+                    default:
+                        break;
+                }
+            }
+        }
+
+        return position;
+    }
+
+}