#!/bin/sh
set -eu

usage() {
	cat <<-'EOF'
		Usage:
		  dynmake.sh -n VARNAME -d DIR
		  dynmake.sh -h
	EOF
}

help() {
	cat <<-'EOF'

		Options:
		  -h, --help    show this message
	EOF
}

for flag in "$@"; do
	case "$flag" in
		--)
			break
			;;
		--help)
			usage
			help
			exit
			;;
		*)
			;;
	esac
done

while getopts 'd:n:h' flag; do
	case "$flag" in
		d)
			DIR="$OPTARG"
			;;
		n)
			NAME="$OPTARG"
			;;
		h)
			usage
			help
			exit
			;;
		*)
			usage >&2
			exit 2
			;;
	esac
done
shift $((OPTIND - 1))

assert_arg() {
	if [ -z "$1" ]; then
		printf 'Missing %s.' "$2" >&2
		exit 2
	fi
}

assert_arg "${DIR:-}"  '-d DIR'
assert_arg "${NAME:-}" '-n NAME'



printf '%s = \\\n' "$NAME"
find "$DIR" -type f |
	sed -e 's/^/	/' \
	    -e 's/$/ \\/'
printf '\n'