improved logging with additional if statement

openrefine-batch.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-# openrefine-batch.sh, Felix Lohmeier, v0.6.1, 01.03.2017
+# openrefine-batch.sh, Felix Lohmeier, v0.6.2, 01.03.2017
 # https://github.com/felixlohmeier/openrefine-batch
 
 # user input
@@ -9,7 +9,7 @@ if [ -z "$1" ]
     exit 2
   else
     inputdir=$(readlink -f $1)
-    if [ ! -z "${inputdir// }" ] ; then
+    if [ -n "${inputdir// }" ] ; then
       inputfiles=($(find -L ${inputdir}/* -type f -printf "%f\n" 2>/dev/null))
     fi
 fi
@@ -19,7 +19,7 @@ if [ -z "$2" ]
     exit 2
   else
     configdir=$(readlink -f $2)
-    if [ ! -z "${configdir// }" ] ; then
+    if [ -n "${configdir// }" ] ; then
       jsonfiles=($(find -L ${configdir}/* -type f -printf "%f\n" 2>/dev/null))
     fi
 fi
@@ -37,7 +37,7 @@ if [ -z "$4" ]
     exit 2
   else
     crossdir=$(readlink -f $4)
-    if [ ! -z "${crossdir// }" ] ; then
+    if [ -n "${crossdir// }" ] ; then
       crossprojects=($(find -L ${crossdir}/* -maxdepth 0 -type d -printf "%f\n" 2>/dev/null))
     fi
 fi
@@ -140,6 +140,8 @@ echo ""
     done
 fi
 
+# transform and export files
+if [ -n "$jsonfiles" ] || [ "$export" = "export-true" ]; then
   echo "=== TRANSFORM / EXPORT ==="
   echo ""
   
@@ -221,6 +223,7 @@ if [ "$export" = "export-true" ]; then
       wc -c -l ${outputdir}/*.tsv
       echo ""
   fi
+fi
 
 # cleanup
 echo "cleanup..."