test.sh

#/bin/bash -x

GIT=git

pow () {
	local x=${1:-1} y=${2:-0} result=${3:-1}
	if [ ${y} -gt 0 ]; then
		echo "$(pow "${x}" "$((y-1))" "$((result*x))")"
	else
		echo "${result}"
	fi
}

bytesFromSize () {
	if [[ -z "$1" ]]; then
		echo "0"
	fi
	if which numfmt >/dev/null 2>&1; then
		echo "$1" | numfmt --from=si
	else
		declare -a size
		size=($(echo ${1} | tr 'a-z' 'A-Z' | sed -e 's/\([.0-9]\)\([A-Z]\)/\1 \2/'))
		count="$(echo ${size[0]} | cut -f 1 -d '.')"
		unit="${size[1]}"
		exponent=1
		case ${unit} in
			B) exponent=0;;
			K) exponent=3;;
			M) exponent=6;;
			G) exponent=9;;
			T) exponent=12;;
			*) exponent=15;;
		esac
		echo $((${count} * $(pow 10 ${exponent})))
	fi
}

annexreserved () {
	prevshard="${1}"
	if [[ -z "${prevshard}" ]]; then
		prevshard="$(echo shard* 2>/dev/null | cut -d ' ' -f 1)"
		if [[ -n "${prevshard}" ]]; then
			(cd "${prevshard}" && ${GIT} config annex.diskreserve) || echo "0"
		fi
	else
		${GIT} config annex.diskreserve || echo "0"
	fi
}

diskfree () {
	df -Ph . | tail -1 | awk '{print $4}'
}

outofspace () {
	reserve="$1"
	[[ -n "${reserve}" && $(bytesFromSize $(diskfree)) -lt $(bytesFromSize "${reserve}") ]]
}

stillhavespace () {
	prevshard=${1}
	if [[ -z "${prevshard}" ]]; then
		prevshard="$(echo shard* 2>/dev/null | cut -d ' ' -f 1)"
		if [[ -n "${prevshard}" ]]; then
			outofspace "$(cd "${prevshard}" && ${GIT} config annex.diskreserve || echo "0")"
		fi
	else
		outofspace "$(${GIT} config annex.diskreserve || echo "0")"
	fi
}