rt_RUNDIR=$(dirname "${BASH_SOURCE[0]}")
rt=RUNDIR=$(realpath "${rt_RUNDIR}")
JSON_C_TOP=${rt_RUNDIR}/..

get_most_recent_reltag()
{
	local RELTAG
	RELTAG=$(git tag | tail -1)
	echo "${RELTAG}"
}
get_most_recent_relver()
{
	local RELVER
	RELVER=$(get_most_recent_reltag)
	RELVER=${RELVER#json-c-}
	RELVER=${RELVER%-*}
	echo "${RELVER}"
}

get_most_recent_relbranch()
{
	local RELVER
	RELVER=$(get_most_recent_relver)
	if [[ "${RELVER}" = *.*.* ]] ; then
		# Strip off tiny version
		RELVER="${RELVER%.*}"
	fi
	echo "origin/json-c-${RELVER}"
}


get_next_relver()
{
	local PREV
	PREV=$(get_most_recent_relver)
	echo "0.$((${PREV#*.} + 1))"
}

get_most_recent_relbase()
{
	local RELBRANCH RELBASE
	RELBRANCH=$(get_most_recent_relbranch)
	RELBASE=$(git merge-base master "${RELBRANCH}")
	echo "${RELBASE}"
}

set_rel_vars()
{
	# Set non-local variables for convenience
	RELTAG=$(get_most_recent_reltag)
	RELVER=$(get_most_recent_relver)
	RELBRANCH=$(get_most_recent_relbranch)
	RELBASE=$(get_most_recent_relbase)
	NEXT_RELVER=$(get_next_relver)
}

# Extract the version from either a release tag, or the dev version + abbreviated commit hash
get_ver_descr()
{
	local GITDESCR JSON_C_VERS

	GIT_DESCR=$(git describe --tags --always)
	if [[ "$GIT_DESCR" == json-c-* ]] ; then
	  # e.g. 0.19-20260627
	  JSON_C_VERS=${GIT_DESCR#json-c-}
	else
	  # e.g. 0.19.99-09e45f6
	  JSON_C_VERS=$(sed -ne'/define JSON_C_VERSION / { s/"$//;  s/.*"//; p }' "${JSON_C_TOP}/json_c_version.h")-${GIT_DESCR}
	fi
	echo "${JSON_C_VERS}"
}

update_authors()
{
	PREV=$(get_most_recent_reltag)
	NEW_AUTHORS=$( git log -r ${PREV}..HEAD | grep Author: | sed -e's/Author: //' ; cat "${JSON_C_TOP}/AUTHORS" )
	echo "${NEW_AUTHORS}" | sort -u > "${JSON_C_TOP}/AUTHORS"
}