get_version.sh

#!/usr/bin/env bash
#
# Usage: get_version.sh --version|--release|--full
#
# Print lcov version or release information as provided by Git, .version
# or a fallback.

TOOLDIR=$(cd $(dirname $0) >/dev/null ; pwd)
GITVER=$(cd $TOOLDIR ; git describe --tags 2>/dev/null)

if [ -z "$GITVER" ] ; then
	# Get version information from file
	if [ -e "$TOOLDIR/../.version" ] ; then
		source "$TOOLDIR/../.version"
	fi
else
	# Get version information from git
	FULL=${GITVER:1}
	VERSION=${GITVER%%-*}
	VERSION=${VERSION:1}
	if [ "${GITVER#*-}" != "$GITVER" ] ; then
		RELEASE=${GITVER#*-}
		RELEASE=${RELEASE/-/.}
	fi
fi

# Fallback
[ -z "$VERSION" ] && VERSION="1.0"
[ -z "$RELEASE" ] && RELEASE="1"
[ -z "$FULL" ]    && FULL="$VERSION"

[ "$1" == "--version" ] && echo -n "$VERSION"
[ "$1" == "--release" ] && echo -n "$RELEASE"
[ "$1" == "--full"    ] && echo -n "$FULL"