#!/usr/bin/env zsh

emulate -L zsh -o err_return

git submodule sync --recursive

if [[ "$1" == "--new" ]]; then
	# Only checkout new submodules

	local toplevel
	toplevel="$(git rev-parse --show-toplevel)"
	cd "$toplevel"

	grep path .gitmodules \
	| cut -d= -f2 \
	| sed 's/^\s*//' \
	| while read -r line; do
		# keep only empty ones
		find "$line" -maxdepth 0 -empty
	done \
	| while read -r line; do
		git submodule update --init --recursive -- "$line"
	done
else
	git submodule update --init --recursive
fi