release.sh

#!/bin/bash

pkg=$(basename $(pwd))
tag=HEAD

while getopts 'n:t:' ch; do
        case $ch in
                (n)     pkg=$OPTARG;;
                (t)     tag=$OPTARG;;
        esac
done
shift $(( $OPTIND - 1 ))

[ "$1" ] && version=$1 ||
        version=$(cat VERSION 2>/dev/null) ||
        version=$(awk '/^Version:/ {print $2}' $pkg.spec 2>/dev/null)

[ "$version" ] || {
        echo "missing version." >&2
        exit 1
}

[ -d .git ] || {
        echo "this does not look like a git repository." >&2
        exit 1
}

echo "+ Generating version $version release from $tag."
git archive --prefix="$pkg-$version/" $tag |
        gzip > $pkg-$version.tar.gz

ls -l $pkg-$version.tar.gz

echo "+ All done."