#!/bin/bash

git -C /usr/src/sonstiges/alpine fetch --all -p >/dev/null 2>&1

release_version=$(
  sed -n '
    /^VERSION\s*=/!d
    s/^.*=\s*//
    p
  ' /usr/src/sonstiges/alpine/Makefile
)
line=$(
  sed -n '
    /^VERSION\s*=/ =
  ' /usr/src/sonstiges/alpine/Makefile
)
release_commit=$(
  git -C /usr/src/sonstiges/alpine blame -L${line},${line} -- Makefile | \
    awk '{print $1}'
)
head_rev=$(
  git -C /usr/src/sonstiges/alpine rev-parse --short upstream/master
)
post_release_commits=$(
  git -C /usr/src/sonstiges/alpine rev-list --count "${head_rev}" "^${release_commit}"
)

printf '%s.r%s.%s\n' \
  "${release_version}" \
  "${post_release_commits}" \
  "${head_rev}"