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Diffstat (limited to 'src/main/java/org/traccar/protocol/CguardProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/CguardProtocolDecoder.java147
1 files changed, 147 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/CguardProtocolDecoder.java b/src/main/java/org/traccar/protocol/CguardProtocolDecoder.java
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+++ b/src/main/java/org/traccar/protocol/CguardProtocolDecoder.java
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+/*
+ * Copyright 2016 - 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.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 CguardProtocolDecoder extends BaseProtocolDecoder {
+
+ public CguardProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ private static final Pattern PATTERN_NV = new PatternBuilder()
+ .text("NV:")
+ .number("(dd)(dd)(dd) ") // date (yymmdd)
+ .number("(dd)(dd)(dd)") // time (hhmmss)
+ .number(":(-?d+.d+)") // longitude
+ .number(":(-?d+.d+)") // latitude
+ .number(":(d+.?d*)") // speed
+ .number(":(?:NAN|(d+.?d*))") // accuracy
+ .number(":(?:NAN|(d+.?d*))") // course
+ .number(":(?:NAN|(d+.?d*))").optional() // altitude
+ .compile();
+
+ private static final Pattern PATTERN_BC = new PatternBuilder()
+ .text("BC:")
+ .number("(dd)(dd)(dd) ") // date (yymmdd)
+ .number("(dd)(dd)(dd):") // time (hhmmss)
+ .expression("(.+)") // data
+ .compile();
+
+ private Position decodePosition(DeviceSession deviceSession, String sentence) {
+
+ Parser parser = new Parser(PATTERN_NV, sentence);
+ if (!parser.matches()) {
+ return null;
+ }
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ position.setTime(parser.nextDateTime());
+
+ position.setValid(true);
+ position.setLatitude(parser.nextDouble(0));
+ position.setLongitude(parser.nextDouble(0));
+ position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0)));
+
+ position.setAccuracy(parser.nextDouble(0));
+
+ position.setCourse(parser.nextDouble(0));
+ position.setAltitude(parser.nextDouble(0));
+
+ return position;
+ }
+
+ private Position decodeStatus(DeviceSession deviceSession, String sentence) {
+
+ Parser parser = new Parser(PATTERN_BC, sentence);
+ if (!parser.matches()) {
+ return null;
+ }
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ getLastLocation(position, parser.nextDateTime());
+
+ String[] data = parser.next().split(":");
+ for (int i = 0; i < data.length / 2; i++) {
+ String key = data[i * 2];
+ String value = data[i * 2 + 1];
+ switch (key) {
+ case "CSQ1":
+ position.set(Position.KEY_RSSI, Integer.parseInt(value));
+ break;
+ case "NSQ1":
+ position.set(Position.KEY_SATELLITES, Integer.parseInt(value));
+ break;
+ case "BAT1":
+ if (value.contains(".")) {
+ position.set(Position.KEY_BATTERY, Double.parseDouble(value));
+ } else {
+ position.set(Position.KEY_BATTERY_LEVEL, Integer.parseInt(value));
+ }
+ break;
+ case "PWR1":
+ position.set(Position.KEY_POWER, Double.parseDouble(value));
+ break;
+ default:
+ position.set(key.toLowerCase(), value);
+ break;
+ }
+ }
+
+ return position;
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ String sentence = (String) msg;
+
+ if (sentence.startsWith("ID:") || sentence.startsWith("IDRO:")) {
+ getDeviceSession(channel, remoteAddress, sentence.substring(sentence.indexOf(':') + 1));
+ return null;
+ }
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ if (sentence.startsWith("NV:")) {
+ return decodePosition(deviceSession, sentence);
+ } else if (sentence.startsWith("BC:")) {
+ return decodeStatus(deviceSession, sentence);
+ }
+
+ return null;
+ }
+
+}