diff options
Diffstat (limited to 'src/main/java/org/traccar/protocol/Gt30ProtocolDecoder.java')
-rw-r--r-- | src/main/java/org/traccar/protocol/Gt30ProtocolDecoder.java | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/Gt30ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Gt30ProtocolDecoder.java new file mode 100644 index 000000000..abf208a46 --- /dev/null +++ b/src/main/java/org/traccar/protocol/Gt30ProtocolDecoder.java @@ -0,0 +1,114 @@ +/* + * Copyright 2017 - 2018 Anton Tananaev (anton@traccar.org) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.traccar.protocol; + +import io.netty.channel.Channel; +import org.traccar.BaseProtocolDecoder; +import org.traccar.DeviceSession; +import org.traccar.Protocol; +import org.traccar.helper.DateBuilder; +import org.traccar.helper.Parser; +import org.traccar.helper.PatternBuilder; +import org.traccar.model.Position; + +import java.net.SocketAddress; +import java.util.regex.Pattern; + +public class Gt30ProtocolDecoder extends BaseProtocolDecoder { + + public Gt30ProtocolDecoder(Protocol protocol) { + super(protocol); + } + + private static final Pattern PATTERN = new PatternBuilder() + .text("$$") + .number("x{4}") // length + .expression("(.{14})") // device id + .number("x{4}") // type + .expression("(.)?") // alarm + .number("(dd)(dd)(dd).(ddd),") // time (hhmmss.sss) + .expression("([AV]),") // validity + .number("(d+)(dd.d+),") // latitude + .expression("([NS]),") + .number("(d+)(dd.d+),") // longitude + .expression("([EW]),") + .number("(d+.d+)?,") // speed + .number("(d+.d+)?,") // course + .number("(dd)(dd)(dd)") // date (ddmmyy) + .expression("[^\\|]*") + .number("|(d+.d+)") // hdop + .number("|(-?d+)") // altitude + .number("x{4}") // checksum + .compile(); + + private String decodeAlarm(int value) { + switch (value) { + case 0x01: + case 0x02: + case 0x03: + return Position.ALARM_SOS; + case 0x10: + return Position.ALARM_LOW_BATTERY; + case 0x11: + return Position.ALARM_OVERSPEED; + case 0x12: + return Position.ALARM_GEOFENCE; + default: + return null; + } + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + Parser parser = new Parser(PATTERN, (String) msg); + if (!parser.matches()) { + return null; + } + + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next().trim()); + if (deviceSession == null) { + return null; + } + + Position position = new Position(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + if (parser.hasNext()) { + position.set(Position.KEY_ALARM, decodeAlarm(parser.next().charAt(0))); + } + + DateBuilder dateBuilder = new DateBuilder() + .setTime(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0), parser.nextInt(0)); + + position.setValid(parser.next().equals("A")); + position.setLatitude(parser.nextCoordinate()); + position.setLongitude(parser.nextCoordinate()); + position.setSpeed(parser.nextDouble(0)); + position.setCourse(parser.nextDouble(0)); + + dateBuilder.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0)); + position.setTime(dateBuilder.getDate()); + + position.set(Position.KEY_HDOP, parser.nextDouble()); + + position.setAltitude(parser.nextDouble(0)); + + return position; + } + +} |