From 8ae0436e5edb76243e59ee6e9b2c1a6132fd9464 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton@traccar.org>
Date: Sat, 18 Feb 2023 13:56:32 -0800
Subject: Fix Queclink GL53MG decoding

---
 src/main/java/org/traccar/helper/Parser.java                  | 11 +++++++++++
 .../java/org/traccar/protocol/Gl200TextProtocolDecoder.java   |  2 +-
 src/main/java/org/traccar/protocol/Gps103ProtocolDecoder.java |  2 +-
 .../java/org/traccar/protocol/StartekProtocolDecoder.java     |  2 +-
 src/main/java/org/traccar/protocol/WialonProtocolDecoder.java |  2 +-
 5 files changed, 15 insertions(+), 4 deletions(-)

(limited to 'src/main/java/org')

diff --git a/src/main/java/org/traccar/helper/Parser.java b/src/main/java/org/traccar/helper/Parser.java
index aa39e1ad7..c2aea28fa 100644
--- a/src/main/java/org/traccar/helper/Parser.java
+++ b/src/main/java/org/traccar/helper/Parser.java
@@ -48,6 +48,17 @@ public class Parser {
     }
 
     public boolean hasNext(int number) {
+        for (int i = position; i < position + number; i++) {
+            String value = matcher.group(i);
+            if (value == null || value.isEmpty()) {
+                position += number;
+                return false;
+            }
+        }
+        return true;
+    }
+
+    public boolean hasNextAny(int number) {
         for (int i = position; i < position + number; i++) {
             String value = matcher.group(i);
             if (value != null && !value.isEmpty()) {
diff --git a/src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java b/src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java
index 517499f02..28308ab77 100644
--- a/src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/Gl200TextProtocolDecoder.java
@@ -956,7 +956,7 @@ public class Gl200TextProtocolDecoder extends BaseProtocolDecoder {
             position.set(Position.KEY_POWER, power * 0.001);
         }
 
-        if (parser.hasNext(12)) {
+        if (parser.hasNextAny(12)) {
 
             position.set(Position.KEY_ODOMETER, parser.nextDouble() * 1000);
             position.set(Position.KEY_HOURS, parseHours(parser.next()));
diff --git a/src/main/java/org/traccar/protocol/Gps103ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Gps103ProtocolDecoder.java
index 28efa3c30..d1c35b478 100644
--- a/src/main/java/org/traccar/protocol/Gps103ProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/Gps103ProtocolDecoder.java
@@ -225,7 +225,7 @@ public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
                     getConfig(), parser.nextHexInt(0), parser.nextHexInt(0))));
         }
 
-        if (parser.hasNext(20)) {
+        if (parser.hasNextAny(20)) {
 
             String utcHours = parser.next();
             String utcMinutes = parser.next();
diff --git a/src/main/java/org/traccar/protocol/StartekProtocolDecoder.java b/src/main/java/org/traccar/protocol/StartekProtocolDecoder.java
index 8e3624cb5..d75da7fbd 100644
--- a/src/main/java/org/traccar/protocol/StartekProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/StartekProtocolDecoder.java
@@ -221,7 +221,7 @@ public class StartekProtocolDecoder extends BaseProtocolDecoder {
             }
         }
 
-        if (parser.hasNext(6)) {
+        if (parser.hasNextAny(6)) {
             position.set(Position.KEY_RPM, parser.nextInt());
             position.set(Position.KEY_ENGINE_LOAD, parser.nextInt());
             position.set("airFlow", parser.nextInt());
diff --git a/src/main/java/org/traccar/protocol/WialonProtocolDecoder.java b/src/main/java/org/traccar/protocol/WialonProtocolDecoder.java
index 3d57525b7..b87ba2b53 100644
--- a/src/main/java/org/traccar/protocol/WialonProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/WialonProtocolDecoder.java
@@ -101,7 +101,7 @@ public class WialonProtocolDecoder extends BaseProtocolDecoder {
             position.setTime(new Date());
         }
 
-        if (parser.hasNext(9)) {
+        if (parser.hasNextAny(9)) {
             position.setLatitude(parser.nextCoordinate());
             position.setLongitude(parser.nextCoordinate());
             position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0)));
-- 
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