#!/bin/bash

# \author Stephan Witt
# Full author contact details are available in file CREDITS.

unset DISPLAY

# check for file arguments with relative path names
# convert them to absolute path names
# inkscape on Mac changes the working directory
# this invalidates relative path names
startinkscape() {
	inkscape="$1" ; shift
	pwd=$(pwd)
	iparams=( "$@" )
	oparams=()
	for i in ${!iparams[@]}; do
		# echo $i "=>" "${iparams[$i]}"
		case "${iparams[$i]}" in
		--file=/*|--export-pdf=/*|--export-eps=/*|--export-png=/*|--export-emf=/*|--export-wmf=/*|--export-ps=/*|--export-ps-level=/*|--export-pdf-version=/*)
			oparams+=( "${iparams[$i]}" )
			;;
		--file=*|--export-pdf=*|--export-eps=*|--export-png=*|--export-emf=*|--export-wmf=*|--export-ps=*|--export-ps-level=*|--export-pdf-version=*)
			oparams+=( "${iparams[$i]//=/=${pwd}/}" )
			;;
		--without-gui|-z)
			# ignore this argument - its provided below anyway
			;;
		*)
			oparams+=( "${iparams[$i]}" )
			;;
		esac
	done
	exec "${inkscape}" --without-gui "${oparams[@]}"
}

# try to find the inkscape installation...
# at first try the well known location
RESDIR="/Applications/Inkscape.app/Contents/Resources"
if [ -f "${RESDIR}"/bin/inkscape -a -x "${RESDIR}"/bin/inkscape ]; then
	startinkscape "${RESDIR}"/bin/inkscape "$@"
	exit 0
fi
# this failed... so try PATH expansion to start the inkscape shell wrapper
IFS=":" read -ra DIRLIST <<< "${PATH}"
for BINDIR in "${DIRLIST[@]}" ; do
	RESDIR=$(dirname "${BINDIR}")
	if [ -f "${RESDIR}"/bin/inkscape -a -x "${RESDIR}"/bin/inkscape ]; then
		startinkscape "${RESDIR}"/bin/inkscape "$@"
		exit 0
	fi
done
# report error and exit with failure status
exec 1>&2
echo Could not find Inkscape binary.
exit 1