[OP-835] Qt 5.1.0 - GCS will now write log file to temporay directory in Release builds (currenlty disabled)

ground/openpilotgcs/src/app/main.cpp

@@ -259,6 +259,17 @@ void systemInit()
 #endif
 }
 
+void logInit()
+{
+    qInstallMessageHandler(mainMessageOutput);
+    QFile file(QDir::tempPath() + "/gcs.log");
+    if (file.exists()) {
+        if (file.open(QIODevice::WriteOnly | QIODevice::Text)) {
+            // erase old log
+        }
+    }
+}
+
 inline QStringList getPluginPaths()
 {
     QStringList rc;
@@ -405,6 +416,35 @@ void loadTranslators(QString language, QTranslator &translator, QTranslator &qtT
         }
     }
 }
+
+void mainMessageOutput(QtMsgType type, const QMessageLogContext &context, const QString &msg)
+{
+    QFile file(QDir::tempPath() + "/gcs.log");
+
+    if (file.open(QIODevice::Append | QIODevice::Text)) {
+        QTextStream out(&file);
+        out << QTime::currentTime().toString("hh:mm:ss.zzz ");
+
+        switch (type) {
+        case QtDebugMsg:
+            out << "DBG: ";
+            break;
+        case QtWarningMsg:
+            out << "WRN: ";
+            break;
+        case QtCriticalMsg:
+            out << "CRT: ";
+            break;
+        case QtFatalMsg:
+            out << "FTL: ";
+            break;
+        }
+
+        out << msg << '\n';
+        out.flush();
+    }
+}
+
 } // namespace anonymous
 
 int main(int argc, char * *argv)
@@ -416,6 +456,10 @@ int main(int argc, char * *argv)
     // low level init
     systemInit();
 
+#ifdef QT_NO_DEBUG
+//    logInit();
+#endif
+
     // create application
     SharedTools::QtSingleApplication app(APP_NAME, argc, argv);