From 08dc9eb08cf5a1f3c474d4ac5e421db4259ec92e Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Thu, 5 Nov 2015 14:04:08 +1300
Subject: Refactor SunTech protocol decoder

---
 .../traccar/protocol/SuntechProtocolDecoder.java   | 100 +++++++++------------
 1 file changed, 42 insertions(+), 58 deletions(-)

(limited to 'src')

diff --git a/src/org/traccar/protocol/SuntechProtocolDecoder.java b/src/org/traccar/protocol/SuntechProtocolDecoder.java
index 19eed1197..81a7c3041 100644
--- a/src/org/traccar/protocol/SuntechProtocolDecoder.java
+++ b/src/org/traccar/protocol/SuntechProtocolDecoder.java
@@ -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;
@@ -32,82 +32,66 @@ public class SuntechProtocolDecoder extends BaseProtocolDecoder {
         super(protocol);
     }
 
-    private static final Pattern PATTERN = Pattern.compile(
-            "S.\\d{3}(?:\\w{3})?;" +       // Header
-            "(?:([^;]+);)?" +              // Type
-            "(\\d{6,});" +                 // Device ID
-            "(?:\\d+;)?" +
-            "(\\d+);" +                    // Version
-            "(\\d{4})(\\d{2})(\\d{2});" +  // Date (YYYYMMDD)
-            "(\\d{2}):(\\d{2}):(\\d{2});" + // Time (HH:MM:SS)
-            "(?:(\\p{XDigit}+);)?" +       // Cell
-            "([-\\+]\\d{2}\\.\\d+);" +     // Latitude
-            "([-\\+]\\d{3}\\.\\d+);" +     // Longitude
-            "(\\d{3}\\.\\d{3});" +         // Speed
-            "(\\d{3}\\.\\d{2});" +         // Course
-            "(?:\\d+;)?" +
-            "(\\d+\\.\\d+)?" +             // Battery
-            ".*");                         // Full format
+    private static final Pattern PATTERN = new PatternBuilder()
+            .expression("S.")
+            .number("ddd")
+            .expression("(?:[A-Z]{3})?;")        // header
+            .expression("([^;]+);").optional()   // type
+            .number("(d{6,});")                  // device id
+            .number("d+;").optional()
+            .number("(d+);")                     // version
+            .number("(dddd)(dd)(dd);")           // date
+            .number("(dd):(dd):(dd);")           // time
+            .number("(x+);").optional()          // cell
+            .number("([-+]dd.d+);")              // latitude
+            .number("([-+]ddd.d+);")             // longitude
+            .number("(ddd.ddd);")                // speed
+            .number("(ddd.dd);")                 // course
+            .number("d+;").optional()
+            .number("(d+.d+)?")                  // battery
+            .any()                               // full format
+            .compile();
 
     @Override
     protected Object decode(
-            Channel channel, SocketAddress remoteAddress, Object msg)
-            throws Exception {
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
-        String sentence = (String) msg;
-
-        // Parse message
-        Matcher parser = PATTERN.matcher(sentence);
+        Parser parser = new Parser(PATTERN, (String) msg);
         if (!parser.matches()) {
             return null;
         }
 
-        // Create new position
         Position position = new Position();
         position.setProtocol(getProtocolName());
-        int index = 1;
 
-        String type = parser.group(index++);
-        if (type != null && (type.equals("Alert") || type.equals("Emergency"))) {
-            position.set(Event.KEY_ALARM, true);
+        if (parser.hasNext()) {
+            String type = parser.next();
+            if (type.equals("Alert") || type.equals("Emergency")) {
+                position.set(Event.KEY_ALARM, true);
+            }
         }
 
-        // Identifier
-        if (!identify(parser.group(index++), channel)) {
+        if (!identify(parser.next(), channel)) {
             return null;
         }
         position.setDeviceId(getDeviceId());
 
-        // Version
-        position.set(Event.KEY_VERSION, parser.group(index++));
-
-        // Date and Time
-        Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
-        time.clear();
-        time.set(Calendar.YEAR, 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());
-
-        // Cell
-        position.set(Event.KEY_CELL, parser.group(index++));
+        position.set(Event.KEY_VERSION, parser.next());
 
-        // Coordinates
-        position.setLatitude(Double.parseDouble(parser.group(index++)));
-        position.setLongitude(Double.parseDouble(parser.group(index++)));
-        position.setValid(true); // wrong?
+        DateBuilder dateBuilder = new DateBuilder()
+                .setDate(parser.nextInt(), parser.nextInt(), parser.nextInt())
+                .setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
+        position.setTime(dateBuilder.getDate());
 
-        // Speed
-        position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(parser.group(index++))));
+        position.set(Event.KEY_CELL, parser.next());
 
-        // Course
-        position.setCourse(Double.parseDouble(parser.group(index++)));
+        position.setValid(true);
+        position.setLatitude(parser.nextDouble());
+        position.setLongitude(parser.nextDouble());
+        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
+        position.setCourse(parser.nextDouble());
 
-        // Battery
-        position.set(Event.KEY_BATTERY, parser.group(index++));
+        position.set(Event.KEY_BATTERY, parser.next());
 
         return position;
     }
-- 
cgit v1.2.3