From 7ee16ab6fe928171ded0e188811a631743285a58 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Mon, 26 Oct 2015 11:58:08 +1300
Subject: Refactor Riti protocol decoder

---
 src/org/traccar/protocol/RitiProtocolDecoder.java | 94 ++++++++---------------
 1 file changed, 32 insertions(+), 62 deletions(-)

(limited to 'src/org/traccar/protocol/RitiProtocolDecoder.java')

diff --git a/src/org/traccar/protocol/RitiProtocolDecoder.java b/src/org/traccar/protocol/RitiProtocolDecoder.java
index bb7c0b583..7e86dd535 100644
--- a/src/org/traccar/protocol/RitiProtocolDecoder.java
+++ b/src/org/traccar/protocol/RitiProtocolDecoder.java
@@ -24,7 +24,9 @@ import java.util.regex.Pattern;
 import org.jboss.netty.buffer.ChannelBuffer;
 import org.jboss.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
-import org.traccar.helper.ChannelBufferTools;
+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;
 
@@ -34,33 +36,31 @@ public class RitiProtocolDecoder extends BaseProtocolDecoder {
         super(protocol);
     }
 
-    private static final Pattern PATTERN = Pattern.compile(
-            "\\$GPRMC," +
-            "(\\d{2})(\\d{2})(\\d{2})\\.?\\d*," + // Time (HHMMSS.SSS)
-            "([AV])," +                    // Validity
-            "(\\d{2})(\\d{2}\\.\\d+)," +   // Latitude (DDMM.MMMM)
-            "([NS])," +
-            "(\\d{3})(\\d{2}\\.\\d+)," +   // Longitude (DDDMM.MMMM)
-            "([EW])," +
-            "(\\d+\\.?\\d*)?," +           // Speed
-            "(\\d+\\.?\\d*)?," +           // Course
-            "(\\d{2})(\\d{2})(\\d{2})" +   // Date (DDMMYY)
-            ".+");
+    private static final Pattern PATTERN = new PatternBuilder()
+            .text("$GPRMC,")
+            .number("(dd)(dd)(dd).?d*,")         // time
+            .expression("([AV]),")               // validity
+            .number("(dd)(dd.d+),")              // latitude
+            .expression("([NS]),")
+            .number("(ddd)(dd.d+),")             // longitude
+            .expression("([EW]),")
+            .number("(d+.?d*)?,")                // speed
+            .number("(d+.?d*)?,")                // course
+            .number("(dd)(dd)(dd)")              // date (ddmmyy)
+            .any()
+            .compile();
 
     @Override
     protected Object decode(
-            Channel channel, SocketAddress remoteAddress, Object msg)
-            throws Exception {
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
 
         ChannelBuffer buf = (ChannelBuffer) msg;
 
-        // Create new position
+        buf.skipBytes(2); // header
+
         Position position = new Position();
         position.setProtocol(getProtocolName());
 
-        buf.skipBytes(2); // header
-
-        // Get device id
         if (!identify(String.valueOf(buf.readUnsignedShort()), channel)) {
             return null;
         }
@@ -78,55 +78,25 @@ public class RitiProtocolDecoder extends BaseProtocolDecoder {
         position.set(Event.KEY_ODOMETER, buf.readUnsignedInt());
 
         // Parse GPRMC
-        Integer end = ChannelBufferTools.find(buf, buf.readerIndex(), buf.readerIndex() + 80, "*");
-        String gprmc = buf.toString(
-                buf.readerIndex(), end - buf.readerIndex(), Charset.defaultCharset());
-        Matcher parser = PATTERN.matcher(gprmc);
+        int end = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '*');
+        String gprmc = buf.toString(buf.readerIndex(), end - buf.readerIndex(), Charset.defaultCharset());
+        Parser parser = new Parser(PATTERN, gprmc);
         if (!parser.matches()) {
             return null;
         }
 
-        Integer index = 1;
-
-        // Time
-        Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
-        time.clear();
-        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++)));
-
-        // Validity
-        position.setValid(parser.group(index++).compareTo("A") == 0);
-
-        // Latitude
-        Double latitude = Double.parseDouble(parser.group(index++));
-        latitude += Double.parseDouble(parser.group(index++)) / 60;
-        if (parser.group(index++).compareTo("S") == 0) latitude = -latitude;
-        position.setLatitude(latitude);
-
-        // Longitude
-        Double longitude = Double.parseDouble(parser.group(index++));
-        longitude += Double.parseDouble(parser.group(index++)) / 60;
-        if (parser.group(index++).compareTo("W") == 0) longitude = -longitude;
-        position.setLongitude(longitude);
-
-        // Speed
-        String speed = parser.group(index++);
-        if (speed != null) {
-            position.setSpeed(Double.parseDouble(speed));
-        }
+        DateBuilder dateBuilder = new DateBuilder()
+                .setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
 
-        // Course
-        String course = parser.group(index++);
-        if (course != null) {
-            position.setCourse(Double.parseDouble(course));
-        }
+        position.setValid(parser.next().equals("A"));
+        position.setLatitude(parser.nextCoordinate());
+        position.setLongitude(parser.nextCoordinate());
+        position.setSpeed(parser.nextDouble());
+        position.setCourse(parser.nextDouble());
+
+        dateBuilder.setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt());
+        position.setTime(dateBuilder.getDate());
 
-        // Date
-        time.set(Calendar.DAY_OF_MONTH, Integer.parseInt(parser.group(index++)));
-        time.set(Calendar.MONTH, Integer.parseInt(parser.group(index++)) - 1);
-        time.set(Calendar.YEAR, 2000 + Integer.parseInt(parser.group(index++)));
-        position.setTime(time.getTime());
         return position;
     }
 
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