Added HasData and IsEmpty function

include/functions

@@ -50,12 +50,14 @@
 #    FileIsEmpty                Check if a file is empty
 #    FileIsReadable             Check if a file is readable or directory accessible
 #    GetHostID                  Retrieve an unique ID for this host
+#    HasData                    Checks for data in variable
 #    InsertSection              Insert a section block
 #    InsertPluginSection        Insert a section block for plugins
 #    IsContainer                Determine if program runs in a container
 #    IsDebug                    Check if --debug is used
 #    IsDeveloperMode            Check if --developer is used
 #    IsDeveloperVersion         Check if program is a developer release
+#    IsEmpty                    Check for empty result or variable
 #    IsNotebook                 System detection
 #    IsOwnedByRoot              Determine if file or directory is owned by root
 #    IsRunning                  Check if a process is running
@@ -1090,6 +1092,22 @@
         fi
     }
 
+    ################################################################################
+    # Name        : HasData()
+    # Description : Check for a filled variable
+    #
+    # Returns     : 0 = True, 1 = False
+    # Usage       : if HasData "${FIND}"; then
+    ################################################################################
+
+    HasData() {
+        if [ $# -eq 1 ]; then
+            if [ ! -z "$1" ]; then return 0; else return 1; fi
+        else
+            ExitFatal "Function HasData called without parameters - look in log to determine where this happened, or use sh -x lynis to see all details."
+        fi
+    }
+
 
     ################################################################################
     # Name        : InsertSection()
@@ -1189,6 +1207,23 @@
     }
 
 
+    ################################################################################
+    # Name        : IsEmpty()
+    # Description : Check for variable that has no data in it
+    #
+    # Returns     : 0 = True, 1 = False
+    # Usage       : if IsEmpty "${FIND}"; then
+    ################################################################################
+
+    IsEmpty() {
+        if [ $# -eq 1 ]; then
+            if [ -z "$1" ]; then return 0; else return 1; fi
+        else
+            ExitFatal "Function IsEmpty called without parameters - look in log to determine where this happened, or use sh -x lynis to see all details."
+        fi
+    }
+
+
     ################################################################################
     # Name        : IsRunning()
     # Description : Check if a process is running