check for existence before (re-)creation

Signed-off-by: Nico Schottelius <nico@kr.ethz.ch>

conf/type/__file/gencode

@@ -70,6 +70,8 @@ if [ -f "$__object/parameter/source" ]; then
    fi
 # No source? Create empty file/dir
 else
+   # Only touch / create if it does not exist
+   if [ no = "$(cat "$__object/explorer/exists")" ]; then
       case "$type" in
          directory)
             echo mkdir \"$destination\"
@@ -84,6 +86,7 @@ else
             exit 1
          ;;
       esac
+   fi
 fi
 
 if [ -f "$__object/parameter/mode" ]; then