test: Refactored transposing of plot data into function bin/tools/RunFunctions::transposeFile()

which simplifies the reactingEulerFoam populationBalance test cases.

Patch contributed by Institute of Fluid Dynamics, Helmholtz-Zentrum
Dresden - Rossendorf (HZDR)

bin/tools/RunFunctions

@@ -168,4 +168,31 @@ cloneCase()
     fi
 }
 
+transposeFile()
+{
+    awk '
+    {
+        for (i = 1; i <= NF; i++)
+        {
+            a[NR, i] = $i
+        }
+    }
+
+    NF > p {p = NF}
+
+    END {
+            for (j = 1; j <= p; j++)
+            {
+                str = a[1,j]
+
+                for(i = 2; i <= NR; i++)
+                {
+                    str = str" "a[i,j];
+                }
+
+                print str
+            }
+        }' $1
+}
+
 #------------------------------------------------------------------------------