Ref T215, utility functions

* CServer
* ICAO List

src/blackmisc/network/server.cpp

@@ -152,6 +152,11 @@ namespace BlackMisc
             return m_timestampMSecsSinceEpoch >= 0;
         }
 
+        bool CServer::isNull() const
+        {
+            return this->hasUnspecifiedServerType() && !this->hasName() && m_port < 0;
+        }
+
         CStatusMessageList CServer::validate() const
         {
             static const CLogCategoryList cats(CLogCategoryList(this).join({ CLogCategory::validation()}));

src/blackmisc/network/server.h

@@ -101,6 +101,9 @@ namespace BlackMisc
             //! Get name
             const QString &getName() const { return m_name; }
 
+            //! Has name?
+            bool hasName() const { return !m_name.isEmpty(); }
+
             //! Set name
             void setName(const QString &name) { m_name = name.trimmed(); }
 
@@ -176,6 +179,9 @@ namespace BlackMisc
             //! Is connected?
             bool isConnected() const;
 
+            //! NULL?
+            bool isNull() const;
+
             //! Validate, provide details about issues
             CStatusMessageList validate() const;