File read-edid-wrapper of Package read-edid

#!/bin/sh

GET_EDID=@LIBEXECDIR@/get-edid

is_classic() {
	while [ $# -gt 0 ] ; do
		if [ "$1" = '-c' ] ; then
			return 0
		fi
		if [ "$1" = '--classiconly' ] ; then
			return 0
		fi
		shift
	done
	return 1
end
}

check_i2c() {
	if lsmod | grep -Fe i2c_dev > /dev/null ; then
		return 0
	fi
	if modinfo i2c-dev | grep -Fe '(builtin)' > /dev/null ; then
		return 0
	fi
	echo Cannot find i2c-dev kernel module. Maybe it needs to be loaded first. >&2
	return 1
}


if is_classic "$@" ; then
	exec $GET_EDID "$@"
else
	check_i2c
	echo Using i2c bus only, use -c option to attempt a VBE BIOS call. >&2
	exec $GET_EDID -i "$@"
fi