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authorAnton Tananaev <anton.tananaev@gmail.com>2015-11-03 19:15:34 +1300
committerAnton Tananaev <anton.tananaev@gmail.com>2015-11-03 19:15:34 +1300
commit1e9edb291f05e9a8512437c76db81bdf19f3cc73 (patch)
treebb3d4a0fd9a99a248ee6995ded3e6c264c9af379 /src/org/traccar
parent0d08a605dbe772799aa87c07b3feac6e9f7239b6 (diff)
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Refactor JT600 protocol decoder
Diffstat (limited to 'src/org/traccar')
-rw-r--r--src/org/traccar/protocol/Jt600ProtocolDecoder.java142
1 files changed, 55 insertions, 87 deletions
diff --git a/src/org/traccar/protocol/Jt600ProtocolDecoder.java b/src/org/traccar/protocol/Jt600ProtocolDecoder.java
index ae74a1e83..116625ee9 100644
--- a/src/org/traccar/protocol/Jt600ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Jt600ProtocolDecoder.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2012 - 2013 Anton Tananaev (anton.tananaev@gmail.com)
+ * Copyright 2012 - 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.
@@ -17,15 +17,16 @@ package org.traccar.protocol;
import java.net.SocketAddress;
import java.nio.charset.Charset;
-import java.util.Calendar;
-import java.util.TimeZone;
-import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
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.helper.UnitsConverter;
import org.traccar.model.Event;
import org.traccar.model.Position;
@@ -48,58 +49,49 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
buf.readByte(); // header
- // Get device by identifier
String id = String.valueOf(Long.parseLong(ChannelBuffers.hexDump(buf.readBytes(5))));
if (!identify(id, channel)) {
return null;
}
position.setDeviceId(getDeviceId());
- // Protocol and type
int version = ChannelBufferTools.readHexInteger(buf, 1);
buf.readUnsignedByte(); // type
-
buf.readBytes(2); // length
- // Time
- Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
- time.clear();
- time.set(Calendar.DAY_OF_MONTH, ChannelBufferTools.readHexInteger(buf, 2));
- time.set(Calendar.MONTH, ChannelBufferTools.readHexInteger(buf, 2) - 1);
- time.set(Calendar.YEAR, 2000 + ChannelBufferTools.readHexInteger(buf, 2));
- time.set(Calendar.HOUR_OF_DAY, ChannelBufferTools.readHexInteger(buf, 2));
- time.set(Calendar.MINUTE, ChannelBufferTools.readHexInteger(buf, 2));
- time.set(Calendar.SECOND, ChannelBufferTools.readHexInteger(buf, 2));
- position.setTime(time.getTime());
-
- // Coordinates
+ DateBuilder dateBuilder = new DateBuilder()
+ .setDay(ChannelBufferTools.readHexInteger(buf, 2))
+ .setMonth(ChannelBufferTools.readHexInteger(buf, 2))
+ .setYear(ChannelBufferTools.readHexInteger(buf, 2))
+ .setHour(ChannelBufferTools.readHexInteger(buf, 2))
+ .setMinute(ChannelBufferTools.readHexInteger(buf, 2))
+ .setSecond(ChannelBufferTools.readHexInteger(buf, 2));
+ position.setTime(dateBuilder.getDate());
+
double latitude = convertCoordinate(ChannelBufferTools.readHexInteger(buf, 8));
double longitude = convertCoordinate(ChannelBufferTools.readHexInteger(buf, 9));
- // Flags
byte flags = buf.readByte();
position.setValid((flags & 0x1) == 0x1);
- if ((flags & 0x2) == 0) latitude = -latitude;
+ if ((flags & 0x2) == 0) {
+ latitude = -latitude;
+ }
position.setLatitude(latitude);
- if ((flags & 0x4) == 0) longitude = -longitude;
+ if ((flags & 0x4) == 0) {
+ longitude = -longitude;
+ }
position.setLongitude(longitude);
- // Speed
position.setSpeed(ChannelBufferTools.readHexInteger(buf, 2));
-
- // Course
position.setCourse(buf.readUnsignedByte() * 2.0);
if (version == 1) {
position.set(Event.KEY_SATELLITES, buf.readUnsignedByte());
-
- // Power
position.set(Event.KEY_POWER, buf.readUnsignedByte());
buf.readByte(); // other flags and sensors
- // Altitude
position.setAltitude(buf.readUnsignedShort());
position.set(Event.KEY_CELL, buf.readUnsignedShort());
@@ -117,96 +109,72 @@ public class Jt600ProtocolDecoder extends BaseProtocolDecoder {
position.set(Event.KEY_FUEL, fuel);
}
+
return position;
}
- private static final Pattern PATTERN = Pattern.compile(
- "\\(" +
- "([\\d]+)," + // Id
- "W01," + // Type
- "(\\d{3})(\\d{2}.\\d{4})," + // Longitude (DDDMM.MMMM)
- "([EW])," +
- "(\\d{2})(\\d{2}.\\d{4})," + // Latitude (DDMM.MMMM)
- "([NS])," +
- "([AV])," + // Validity
- "(\\d{2})(\\d{2})(\\d{2})," + // Date (DDMMYY)
- "(\\d{2})(\\d{2})(\\d{2})," + // Time (HHMMSS)
- "(\\d+)," + // Speed (km/h)
- "(\\d+)," + // Course
- "(\\d+)," + // Power
- "(\\d+)," + // GPS signal
- "(\\d+)," + // GSM signal
- "(\\d+)," + // Alert Type
- ".*\\)");
+ private static final Pattern PATTERN = new PatternBuilder()
+ .text("(")
+ .number("(d+),") // id
+ .text("W01,") // type
+ .number("(ddd)(dd.dddd),") // longitude
+ .expression("([EW]),")
+ .number("(dd)(dd.dddd),") // latitude
+ .expression("([NS]),")
+ .expression("([AV]),") // validity
+ .number("(dd)(dd)(dd),") // date (ddmmyy)
+ .number("(dd)(dd)(dd),") // time
+ .number("(d+),") // speed
+ .number("(d+),") // course
+ .number("(d+),") // power
+ .number("(d+),") // gps signal
+ .number("(d+),") // gsm signal
+ .number("(d+),") // alert type
+ .any()
+ .text(")")
+ .compile();
private Position decodeAlertMessage(ChannelBuffer buf, Channel channel) {
- String message = buf.toString(Charset.defaultCharset());
-
- // Parse message
- Matcher parser = PATTERN.matcher(message);
+ Parser parser = new Parser(PATTERN, buf.toString(Charset.defaultCharset()));
if (!parser.matches()) {
return null;
}
- // Create new position
Position position = new Position();
position.setProtocol(getProtocolName());
+
position.set(Event.KEY_ALARM, true);
- Integer index = 1;
- // Get device by identifier
- if (!identify(parser.group(index++), channel)) {
+ if (!identify(parser.next(), channel)) {
return null;
}
position.setDeviceId(getDeviceId());
- // 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);
-
- // 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);
-
- // Validity
- position.setValid(parser.group(index++).compareTo("A") == 0);
+ position.setLongitude(parser.nextCoordinate());
+ position.setLatitude(parser.nextCoordinate());
+ position.setValid(parser.next().equals("A"));
- // Time
- Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
- time.clear();
- 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++)));
- 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()
+ .setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt())
+ .setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
+ position.setTime(dateBuilder.getDate());
- // Speed
- position.setSpeed(Double.parseDouble(parser.group(index++)));
+ position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
+ position.setCourse(parser.nextDouble());
- // Course
- position.setCourse(Double.parseDouble(parser.group(index++)));
+ position.set(Event.KEY_POWER, parser.nextDouble());
- // Power
- position.set(Event.KEY_POWER, Double.parseDouble(parser.group(index++)));
return position;
}
@Override
protected Object decode(
- Channel channel, SocketAddress remoteAddress, Object msg)
- throws Exception {
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
char first = (char) buf.getByte(0);
- // Check message type
if (first == '$') {
return decodeNormalMessage(buf, channel);
} else if (first == '(') {