From 122a26d2822f35b27b9cb0b217916d6b821d9654 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Wed, 21 Oct 2015 20:53:20 +1300
Subject: Refactor TK102 and fix minor issues

---
 .../traccar/protocol/SkypatrolProtocolDecoder.java | 66 ++++++----------------
 1 file changed, 18 insertions(+), 48 deletions(-)

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

diff --git a/src/org/traccar/protocol/SkypatrolProtocolDecoder.java b/src/org/traccar/protocol/SkypatrolProtocolDecoder.java
index 0609e2094..231024731 100644
--- a/src/org/traccar/protocol/SkypatrolProtocolDecoder.java
+++ b/src/org/traccar/protocol/SkypatrolProtocolDecoder.java
@@ -17,13 +17,12 @@ package org.traccar.protocol;
 
 import java.net.SocketAddress;
 import java.nio.charset.Charset;
-import java.util.Calendar;
-import java.util.TimeZone;
 import org.jboss.netty.buffer.ChannelBuffer;
 import org.jboss.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.Context;
 import org.traccar.helper.BitUtil;
+import org.traccar.helper.DateBuilder;
 import org.traccar.helper.Log;
 import org.traccar.model.Event;
 import org.traccar.model.Position;
@@ -56,11 +55,9 @@ public class SkypatrolProtocolDecoder extends BaseProtocolDecoder {
 
         ChannelBuffer buf = (ChannelBuffer) msg;
 
-        // Read header
         int apiNumber = buf.readUnsignedShort();
         int commandType = buf.readUnsignedByte();
-        int messageType = buf.getUnsignedByte(buf.readerIndex()) >> 4;
-        boolean needAck = (buf.readUnsignedByte() & 0xf) == 1;
+        int messageType = BitUtil.from(buf.readUnsignedByte(), 4);
         long mask = defaultMask;
         if (buf.readUnsignedByte() == 4) {
             mask = buf.readUnsignedInt();
@@ -69,17 +66,14 @@ public class SkypatrolProtocolDecoder extends BaseProtocolDecoder {
         // Binary position report
         if (apiNumber == 5 && commandType == 2 && messageType == 1 && BitUtil.check(mask, 0)) {
 
-            // Create new position
             Position position = new Position();
             position.setProtocol(getProtocolName());
 
-            // Status code
             if (BitUtil.check(mask, 1)) {
                 position.set(Event.KEY_STATUS, buf.readUnsignedInt());
             }
 
-            // Device id
-            String id = null;
+            String id;
             if (BitUtil.check(mask, 23)) {
                 id = buf.toString(buf.readerIndex(), 8, Charset.defaultCharset()).trim();
                 buf.skipBytes(8);
@@ -95,116 +89,92 @@ public class SkypatrolProtocolDecoder extends BaseProtocolDecoder {
             }
             position.setDeviceId(getDeviceId());
 
-            // IO data
             if (BitUtil.check(mask, 3)) {
-                buf.readUnsignedShort();
+                buf.readUnsignedShort(); // io data
             }
 
-            // ADC 1
             if (BitUtil.check(mask, 4)) {
-                buf.readUnsignedShort();
+                buf.readUnsignedShort(); // adc 1
             }
 
-            // ADC 2
             if (BitUtil.check(mask, 5)) {
-                buf.readUnsignedShort();
+                buf.readUnsignedShort(); // adc 2
             }
 
-            // Function category
             if (BitUtil.check(mask, 7)) {
-                buf.readUnsignedByte();
+                buf.readUnsignedByte(); // function category
             }
 
-            Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
-            time.clear();
+            DateBuilder dateBuilder = new DateBuilder();
 
-            // Date
             if (BitUtil.check(mask, 8)) {
-                time.set(Calendar.DAY_OF_MONTH, buf.readUnsignedByte());
-                time.set(Calendar.MONTH, buf.readUnsignedByte() - 1);
-                time.set(Calendar.YEAR, 2000 + buf.readUnsignedByte());
+                dateBuilder.setDateReverse(
+                        buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
             }
 
-            // GPS status
             if (BitUtil.check(mask, 9)) {
-                position.setValid(buf.readUnsignedByte() == 1);
+                position.setValid(buf.readUnsignedByte() == 1); // gps status
             }
 
-            // Latitude
             if (BitUtil.check(mask, 10)) {
                 position.setLatitude(convertCoordinate(buf.readUnsignedInt()));
             }
 
-            // Longitude
             if (BitUtil.check(mask, 11)) {
                 position.setLongitude(convertCoordinate(buf.readUnsignedInt()));
             }
 
-            // Speed
             if (BitUtil.check(mask, 12)) {
                 position.setSpeed(buf.readUnsignedShort() / 10.0);
             }
 
-            // Course
             if (BitUtil.check(mask, 13)) {
                 position.setCourse(buf.readUnsignedShort() / 10.0);
             }
 
-            // Time
             if (BitUtil.check(mask, 14)) {
-                time.set(Calendar.HOUR_OF_DAY, buf.readUnsignedByte());
-                time.set(Calendar.MINUTE, buf.readUnsignedByte());
-                time.set(Calendar.SECOND, buf.readUnsignedByte());
+                dateBuilder.setTime(
+                        buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
             }
 
-            position.setTime(time.getTime());
+            position.setTime(dateBuilder.getDate());
 
-            // Altitude
             if (BitUtil.check(mask, 15)) {
                 position.setAltitude(buf.readMedium());
             }
 
-            // Satellites
             if (BitUtil.check(mask, 16)) {
                 position.set(Event.KEY_SATELLITES, buf.readUnsignedByte());
             }
 
-            // Battery percentage
             if (BitUtil.check(mask, 17)) {
-                buf.readUnsignedShort();
+                buf.readUnsignedShort(); // battery percentage
             }
 
-            // Trip odometer
             if (BitUtil.check(mask, 20)) {
                 position.set("trip", buf.readUnsignedInt());
             }
 
-            // Odometer
             if (BitUtil.check(mask, 21)) {
                 position.set(Event.KEY_ODOMETER, buf.readUnsignedInt());
             }
 
-            // Time of message generation
             if (BitUtil.check(mask, 22)) {
-                buf.skipBytes(6);
+                buf.skipBytes(6); // time of message generation
             }
 
-            // Battery level
             if (BitUtil.check(mask, 24)) {
                 position.set(Event.KEY_POWER, buf.readUnsignedShort() / 1000.0);
             }
 
-            // GPS overspeed
             if (BitUtil.check(mask, 25)) {
-                buf.skipBytes(18);
+                buf.skipBytes(18); // gps overspeed
             }
 
-            // Cell information
             if (BitUtil.check(mask, 26)) {
-                buf.skipBytes(54);
+                buf.skipBytes(54); // cell information
             }
 
-            // Sequence number
             if (BitUtil.check(mask, 28)) {
                 position.set(Event.KEY_INDEX, buf.readUnsignedShort());
             }
-- 
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