install

#!/usr/bin/env bash
set -euo pipefail

function helptext() {
	cat <<EOH
Usage: $0 [OPTS] [DIR...]

OPTS:
	-f	Force overwrites
	-h	Help
EOH
}

FORCE=
SEARCH=()
# FIXME
while getopts "hf" o; do case $o in
	h) helptext; exit 0 ;;
	f) FORCE=1 ;;
	*) SEARCH+=("$OPTARG");;
esac done
shift $((OPTIND-1))
SEARCH+=("$@")

if [ $# -eq 0 ]; then
	SEARCH=('.')
fi

find "${SEARCH[@]}" -name loc | while read -r loc; do
	fromdir="$(dirname "$loc")"
	while read -r line; do
		from="$fromdir/$(cut -d' ' -f1 <<<"$line")"
		to="${line##* }"
		if [ -e "$HOME/$to" ]; then
			if [ -z "$FORCE" ]; then
				echo "error: ~/$to already exists" >&2
				echo "to overwrite existing files run with -f" >&2
				exit 1
			else
				# shellcheck disable=SC2115
				rm -rf "$HOME/$to"
			fi
		fi
		# shellcheck disable=SC2088
		echo "~/$to <- $from"
		mkdir -p "$(dirname "$HOME/$to")"
		ln -fns "$(realpath "$from")" "$HOME/$to"
	done <"$loc"
done