#!/bin/sh

progname="$(basename $0)"

if [ -z "$1" ]; then
	cat >&2 <<EOF
Usage: $progname <git repo URL>

Finds all garlic/* branches and their current commit of the given
repository and builds the gitTable to be used in nix derivations.

Example:
  garlic-git-table ssh://git@bscpm03.bsc.es/garlic/apps/heat.git
EOF
	exit 1
fi

echo 'gitTable = {'
echo "  # Auto-generated with $progname on $(date --rfc-3339=date)"
git ls-remote $1 'garlic/*' |\
	sed 's@refs/heads/@@' |\
	awk '{printf "\"%s\" = \"%s\";\n", $2, $1}' |\
	column -t -o ' ' |\
	sed 's/^/  /'
echo '};'