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#!/bin/sh
#
# get-version
#
# Copyright © 2009, 2013-2015, 2018, 2020 Guillem Jover <guillem@debian.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 2 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 <https://www.gnu.org/licenses/>.
#
error()
{
echo "get-version: error: $*" 1>&2
exit 1
}
if [ -f .dist-version ]; then
# Get the version from the file distributed in the tarball.
version=$(cat .dist-version)
elif [ -d .git ] || [ -f .git ]; then
if ! command -v git >/dev/null; then
error "cannot get project version, git checkout but git program not found"
fi
# Get the version from the git repository. Since tags cannot contain colons
# or tildes, we use percent and underscore instead. Reverse that switch here.
version=$(git describe --abbrev=4 HEAD 2>/dev/null | tr %_ :~)
# Check if we are on a dirty checkout.
git update-index --refresh -q >/dev/null
dirty=$(git diff-index --name-only HEAD 2>/dev/null)
if [ -n "$dirty" ]; then
version="$version-dirty"
fi
else
error "cannot get project version, not a git checkout nor a distribution tarball."
fi
# Use printf to avoid the trailing new line that m4_esyscmd would not handle.
printf "%s" "$version"
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