Bash/Applescript to export Omnigraffle file

omnigraffle-export.sh

#! /bin/bash

# FORMAT is PNG, SVG, ...

FORMAT=${1?}
INPUT="$(pwd)/${2?}"
OUTPUT="$(pwd)/${3?}"

tmpfile=$(mktemp /tmp/abc-script.XXXXXX)

cat <<END > $tmpfile
on convertGraffleFile(format, graffleFile, outputFile)
	tell application "OmniGraffle"
		close every document
		open graffleFile
		tell front document to export as format to POSIX file outputFile scope all graphics
		close front document
	end tell
end convertGraffleFile

on run argv
	convertGraffleFile(item 1 of argv, item 2 of argv, item 3 of argv)
end run
END

osascript $tmpfile $FORMAT "${INPUT}" "${OUTPUT}"