lbmk/script/misc/versioncheck

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#!/usr/bin/env sh
# Copyright (C) 2021 Leah Rowe <info@minifree.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
[ "x${DEBUG+set}" = 'xset' ] && set -v
set -u
. "include/err.sh"
project="$(cat projectname)"
version="version-unknown"
[ -f version ] && version="$(cat version)"
version_="${version}"
if [ -e ".git" ]; then
version="$(git describe --tags HEAD 2>&1)" || \
version="git-$(git rev-parse HEAD 2>&1)" || \
version="${version_}"
printf "%s\n" "${version}" > version
fi
versiondate="version-date-unknown"
[ -f versiondate ] && versiondate="$(cat versiondate)"
versiondate_="${versiondate}"
if [ -e ".git" ]; then
versiondate="$(git show --no-patch --no-notes --pretty='%ct' HEAD)" || \
versiondate="${versiondate_}"
printf "%s\n" "${versiondate}" > versiondate
fi
if [ "${versiondate}" = "version-date-unknown" ] || \
[ "${version}" = "version-unknown" ]; then
err "cannot determine ${projectname} revision"
fi