From 111ea9bbec5516c36939df8eec4f7ba3edb268bf Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Thu, 5 Nov 2015 14:23:43 +1300
Subject: Refacor Gotop protocol decoder

---
 src/org/traccar/protocol/GotopProtocolDecoder.java | 87 ++++++++--------------
 1 file changed, 31 insertions(+), 56 deletions(-)

(limited to 'src')

diff --git a/src/org/traccar/protocol/GotopProtocolDecoder.java b/src/org/traccar/protocol/GotopProtocolDecoder.java
index 16348cb7f..cfae1b0f6 100644
--- a/src/org/traccar/protocol/GotopProtocolDecoder.java
+++ b/src/org/traccar/protocol/GotopProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013 - 2014 Anton Tananaev (anton.tananaev@gmail.com)
+ * Copyright 2013 - 2015 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.
@@ -16,12 +16,12 @@
 package org.traccar.protocol;
 
 import java.net.SocketAddress;
-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.traccar.BaseProtocolDecoder;
+import org.traccar.helper.DateBuilder;
+import org.traccar.helper.Parser;
+import org.traccar.helper.PatternBuilder;
 import org.traccar.helper.UnitsConverter;
 import org.traccar.model.Event;
 import org.traccar.model.Position;
@@ -32,77 +32,52 @@ public class GotopProtocolDecoder extends BaseProtocolDecoder {
         super(protocol);
     }
 
-    private static final Pattern PATTERN = Pattern.compile(
-            "(\\d+)," +                         // IMEI
-            "[^,]+," +                          // Type
-            "([AV])," +                         // Validity
-            "DATE:(\\d{2})(\\d{2})(\\d{2})," +  // Date (YYMMDD)
-            "TIME:(\\d{2})(\\d{2})(\\d{2})," +  // Time (HHMMSS)
-            "LAT:(\\d+.\\d+)([NS])," +          // Latitude
-            "LOT:(\\d+.\\d+)([EW])," +          // Longitude
-            "Speed:(\\d+.\\d+)," +              // Speed
-            "([^,]+)," +                        // Status
-            "(\\d+)?" +                         // Course
-            ".*");
+    private static final Pattern PATTERN = new PatternBuilder()
+            .number("(d+),")                     // imei
+            .expression("[^,]+,")                // type
+            .expression("([AV]),")               // validity
+            .number("DATE:(dd)(dd)(dd),")        // date (yyddmm)
+            .number("TIME:(dd)(dd)(dd),")        // time
+            .number("LAT:(d+.d+)([NS]),")        // latitude
+            .number("LOT:(d+.d+)([EW]),")        // longitude
+            .text("Speed:").number("(d+.d+),")   // speed
+            .expression("([^,]+),")              // status
+            .number("(d+)?")                     // course
+            .any()
+            .compile();
 
     @Override
     protected Object decode(
-            Channel channel, SocketAddress remoteAddress, Object msg)
-            throws Exception {
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        // Parse message
-        String sentence = (String) msg;
-        Matcher parser = PATTERN.matcher(sentence);
-        if (sentence.isEmpty() || !parser.matches()) {
+        Parser parser = new Parser(PATTERN, (String) msg);
+        if (!parser.matches()) {
             return null;
         }
 
-        // Create new position
         Position position = new Position();
         position.setProtocol(getProtocolName());
-        Integer index = 1;
 
-        // Get device by IMEI
-        if (!identify(parser.group(index++), channel)) {
+        if (!identify(parser.next(), channel)) {
             return null;
         }
         position.setDeviceId(getDeviceId());
 
-        // Validity
-        position.setValid(parser.group(index++).compareTo("A") == 0);
+        position.setValid(parser.next().equals("A"));
 
-        // Time
-        Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
-        time.clear();
-        time.set(Calendar.YEAR, 2000 + Integer.parseInt(parser.group(index++)));
-        time.set(Calendar.MONTH, Integer.parseInt(parser.group(index++)) - 1);
-        time.set(Calendar.DAY_OF_MONTH, Integer.parseInt(parser.group(index++)));
-        time.set(Calendar.HOUR_OF_DAY, Integer.parseInt(parser.group(index++)));
-        time.set(Calendar.MINUTE, Integer.parseInt(parser.group(index++)));
-        time.set(Calendar.SECOND, Integer.parseInt(parser.group(index++)));
-        position.setTime(time.getTime());
+        DateBuilder dateBuilder = new DateBuilder()
+                .setDate(parser.nextInt(), parser.nextInt(), parser.nextInt())
+                .setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
+        position.setTime(dateBuilder.getDate());
 
-        // Latitude
-        Double latitude = Double.parseDouble(parser.group(index++));
-        if (parser.group(index++).compareTo("S") == 0) latitude = -latitude;
-        position.setLatitude(latitude);
+        position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
+        position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
+        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
 
-        // Longitude
-        Double longitude = Double.parseDouble(parser.group(index++));
-        if (parser.group(index++).compareTo("W") == 0) longitude = -longitude;
-        position.setLongitude(longitude);
+        position.set(Event.KEY_STATUS, parser.next());
 
-        // Speed
-        position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(parser.group(index++))));
+        position.setCourse(parser.nextDouble());
 
-        // Status
-        position.set(Event.KEY_STATUS, parser.group(index++));
-
-        // Course
-        String course = parser.group(index++);
-        if (course != null) {
-            position.setCourse(Double.parseDouble(course));
-        }
         return position;
     }
 
-- 
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