Refactor YWT protocol decoder

1 files changed, 38 insertions, 68 deletions

diff --git a/src/org/traccar/protocol/YwtProtocolDecoder.java b/src/org/traccar/protocol/YwtProtocolDecoder.java
index 0801f45fe..574c5b877 100644
--- a/src/org/traccar/protocol/YwtProtocolDecoder.java
+++ b/src/org/traccar/protocol/YwtProtocolDecoder.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.model.Event;
 import org.traccar.model.Position;
 
@@ -31,28 +31,28 @@ public class YwtProtocolDecoder extends BaseProtocolDecoder {
         super(protocol);
     }
 
-    private static final Pattern PATTERN = Pattern.compile(
-            "%(..)," +                     // Type
-            "(\\d+):" +                    // Unit identifier
-            "\\d+," +                      // Subtype
-            "(\\d{2})(\\d{2})(\\d{2})" +   // Date (YYMMDD)
-            "(\\d{2})(\\d{2})(\\d{2})," +  // Time (HHMMSS)
-            "([EW])" +
-            "(\\d{3}\\.\\d{6})," +         // Longitude (DDDMM.MMMM)
-            "([NS])" +
-            "(\\d{2}\\.\\d{6})," +         // Latitude (DDMM.MMMM)
-            "(\\d+)?," +                   // Altitude
-            "(\\d+)," +                    // Speed
-            "(\\d+)," +                    // Course
-            "(\\d+)," +                    // Satellite
-            "([^,]+)," +                   // Report identifier
-            "([0-9a-fA-F\\-]+)" +          // Status
-            ".*");
+    private static final Pattern PATTERN = new PatternBuilder()
+            .expression("%(..),")                // type
+            .number("(d+):")                     // unit identifier
+            .number("d+,")                       // subtype
+            .number("(dd)(dd)(dd)")              // date (yymmdd)
+            .number("(dd)(dd)(dd),")             // time
+            .expression("([EW])")
+            .number("(ddd.d{6}),")               // longitude
+            .expression("([NS])")
+            .number("(dd.d{6}),")                // latitude
+            .number("(d+)?,")                    // altitude
+            .number("(d+),")                     // speed
+            .number("(d+),")                     // course
+            .number("(d+),")                     // satellite
+            .expression("([^,]+),")              // report identifier
+            .expression("([-0-9a-fA-F]+)")       // status
+            .any()
+            .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;
 
@@ -71,69 +71,39 @@ public class YwtProtocolDecoder extends BaseProtocolDecoder {
             return null;
         }
 
-        // Parse message
-        Matcher parser = PATTERN.matcher(sentence);
+        Parser parser = new Parser(PATTERN, sentence);
         if (!parser.matches()) {
             return null;
         }
 
-        // Create new position
         Position position = new Position();
         position.setProtocol(getProtocolName());
-        Integer index = 1;
-        String type = parser.group(index++);
 
-        // Device
-        if (!identify(parser.group(index++), channel)) {
+        String type = parser.next();
+
+        if (!identify(parser.next(), channel)) {
             return null;
         }
         position.setDeviceId(getDeviceId());
 
-        // 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());
-
-        // Longitude
-        String hemisphere = parser.group(index++);
-        Double longitude = Double.parseDouble(parser.group(index++));
-        if (hemisphere.compareTo("W") == 0) longitude = -longitude;
-        position.setLongitude(longitude);
-
-        // Latitude
-        hemisphere = parser.group(index++);
-        Double latitude = Double.parseDouble(parser.group(index++));
-        if (hemisphere.compareTo("S") == 0) latitude = -latitude;
-        position.setLatitude(latitude);
-
-        // Altitude
-        String altitude = parser.group(index++);
-        if (altitude != null) {
-            position.setAltitude(Double.parseDouble(altitude));
-        }
-
-        // Speed
-        position.setSpeed(Double.parseDouble(parser.group(index++)));
+        DateBuilder dateBuilder = new DateBuilder()
+                .setDate(parser.nextInt(), parser.nextInt(), parser.nextInt())
+                .setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
+        position.setTime(dateBuilder.getDate());
 
-        // Course
-        position.setCourse(Double.parseDouble(parser.group(index++)));
+        position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG));
+        position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG));
+        position.setAltitude(parser.nextDouble());
+        position.setSpeed(parser.nextDouble());
+        position.setCourse(parser.nextDouble());
 
-        // Satellites
-        int satellites = Integer.parseInt(parser.group(index++));
+        int satellites = parser.nextInt();
         position.setValid(satellites >= 3);
         position.set(Event.KEY_SATELLITES, satellites);
 
-        // Report identifier
-        String reportId = parser.group(index++);
+        String reportId = parser.next();
 
-        // Status
-        position.set(Event.KEY_STATUS, parser.group(index++));
+        position.set(Event.KEY_STATUS, parser.next());
 
         // Send response
         if ((type.equals("KP") || type.equals("EP")) && channel != null) {