#!/bin/sh
set -e

if [ "$VCS" = git ] || [ "$VCS" = hg ]; then
	# Make sure the file is not readable by others, since it can leak
	# information about contents of non-readable directories in /etc.
	umask 077

	# ensure the file exists so that it will list its own metadata
	if [ ! -e .metadata ]; then
		metastore --save
	fi

	# metastore doesn't produce the same output file for the same metadata
	# everytime, so avoid changing the file if nothing really changed.
	if [ ! -z "$(metastore --compare)" ]; then
		metastore --save

		# stage the file as part of the current commit
		if [ "$VCS" = git ]; then
			git add .metadata
		fi
		# hg add not done, hg will automatically include the file
		# in the current commit
	fi
fi