#!/bin/sh
#
# Copyright (c) 2013 Nagios Plugins Development Team
#
# Originally written by Holger Weiss <holger@zedat.fu-berlin.de>.
#
# This file is free software; the Nagios Plugins Development Team gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY, to the extent permitted by law; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

set -e
set -u

export PATH='/usr/local/bin:/usr/local/sbin:/bin:/sbin:/usr/bin:/usr/sbin'

export_prefix='/home/plugins/exported'
myself=${0##*/}

usage()
{
	echo >&2 "Usage: $myself [-b <branch>] <repository> ..."
	exit 2
}

while getopts b: option
do
	case $option in
	b)
		branch=$OPTARG
		;;
	*)
		usage
		;;
	esac
done

shift $((OPTIND - 1))
test $# -ge 1 || usage

for repository in "$@"
do
	export_dir="$export_prefix/${repository##*/}"
	export_dir=${export_dir%.git}
	export_dir="$export_dir${branch:+-$branch}"

	cd "$repository"
	rm -r -f "$export_dir"
	mkdir -p "$export_dir"
	git archive "${branch:-master}" | tar -x -C "$export_dir" -f -
	cd "$OLDPWD"
done