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Diffstat (limited to 'src/main/java/org/traccar/protocol/Tr20ProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/Tr20ProtocolDecoder.java103
1 files changed, 103 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/Tr20ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Tr20ProtocolDecoder.java
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+++ b/src/main/java/org/traccar/protocol/Tr20ProtocolDecoder.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2012 - 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.NetworkMessage;
+import org.traccar.Protocol;
+import org.traccar.helper.Parser;
+import org.traccar.helper.PatternBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.util.regex.Pattern;
+
+public class Tr20ProtocolDecoder extends BaseProtocolDecoder {
+
+ public Tr20ProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ private static final Pattern PATTERN_PING = new PatternBuilder()
+ .text("%%")
+ .expression("[^,]+,")
+ .number("(d+)")
+ .compile();
+
+ private static final Pattern PATTERN_DATA = new PatternBuilder()
+ .text("%%")
+ .expression("([^,]+),") // id
+ .expression("([AL]),") // validity
+ .number("(dd)(dd)(dd)") // date (yymmdd)
+ .number("(dd)(dd)(dd),") // time (hhmmss)
+ .expression("([NS])")
+ .number("(dd)(dd.d+)") // latitude
+ .expression("([EW])")
+ .number("(ddd)(dd.d+),") // longitude
+ .number("(d+),") // speed
+ .number("(d+),") // course
+ .number("(?:NA|[FC]?(-?d+)),") // temperature
+ .number("(x{8}),") // status
+ .number("(d+)") // event
+ .any()
+ .compile();
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ Parser parser = new Parser(PATTERN_PING, (String) msg);
+ if (parser.matches()) {
+ if (channel != null) {
+ channel.writeAndFlush(new NetworkMessage(
+ "&&" + parser.next() + "\r\n", remoteAddress)); // keep-alive response
+ }
+ return null;
+ }
+
+ parser = new Parser(PATTERN_DATA, (String) msg);
+ if (!parser.matches()) {
+ return null;
+ }
+
+ Position position = new Position(getProtocolName());
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
+ if (deviceSession == null) {
+ return null;
+ }
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ position.setValid(parser.next().equals("A"));
+
+ position.setTime(parser.nextDateTime());
+
+ position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
+ position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
+ position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
+ position.setCourse(parser.nextDouble());
+
+ position.set(Position.PREFIX_TEMP + 1, parser.nextInt());
+ position.set(Position.KEY_STATUS, parser.nextHexLong());
+ position.set(Position.KEY_EVENT, parser.nextInt());
+
+ return position;
+ }
+
+}