#!/bin/sh

set -e

ttlfile="$1"
xmlfile="${2:-$(basename "$ttlfile" .ttl).rdf}"

exit1() {
	echo "ERROR: $1"
	exit 1
}

[ -e "$ttlfile" ] || exit1 "Turtle file \"$ttlfile\" does not exist."
[ ! -e "$xmlfile" ] || exit1 "RDF/XML file \"$xmlfile\" already exists."

base="$(perl -ne '/^\@base\s+<(http.+)>/ and print $1 and exit;' "$ttlfile")" || true
rapper ${base:+-I "$base"} -i turtle -o rdfxml-abbrev "$ttlfile" > "$xmlfile"