#!/bin/sh

# Print additional version information for non-release trees.

usage() {

	echo "Usage: $0 [srctree]" >&2

	exit 1

}

cd "${1:-.}" || usage

# Check for git and a git repo.

if head=`git rev-parse --verify HEAD 2>/dev/null`; then

	# Do we have an untagged version?

	if git name-rev --tags HEAD | grep -E '^HEAD[[:space:]]+(.*~[0-9]*|undefined)$' > /dev/null; then

		printf '%s%s' -g `echo "$head" | cut -c1-8`

	fi

	# Are there uncommitted changes?

	if git diff-index HEAD | read dummy; then

		printf '%s' -dirty

	fi

fi