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#!/bin/sh
# Print a version string.
# This script is derived from GIT-VERSION-GEN from GIT: http://git.or.cz/.
# It may be run two ways:
# - from a git repository in which the git-describe command below
# produces useful output (thus requiring at least one signed tag)
# - from a non-git-repo directory containing a .version file, which
# presumes this script is invoked like "./git-version-gen .version".
case $# in
1) ;;
*) echo 1>&2 "Usage: $0 \$srcdir/.version"; exit 1;;
esac
tarball_version_file=$1
nl='
'
# First see if there is a tarball-only version file.
# then try git-describe, then default.
if test -f $tarball_version_file
then
v=`cat $tarball_version_file` || exit 1
case $v in
*$nl*) v= ;; # reject multi-line output
[0-9]*) ;;
*) v= ;;
esac
test -z "$v" \
&& echo "$0: WARNING: $tarball_version_file seems to be damaged" 1>&2
fi
if test -n "$v"
then
: # use $v
elif test -d .git \
&& v=`git describe --abbrev=4 HEAD 2>/dev/null` \
&& case $v in
# FIXME: remove this after v6.10.
COREUTILS-[0-9]*) v=`echo "$v" | sed 's/^COREUTILS-//;s/_/./g'` ;;
v[0-9]*) ;;
*) (exit 1) ;;
esac
then
# Remove the "g" in git-describe's output string.
v=`echo "$v" | sed 's/\(.*\)-g/\1-/'`;
else
v=UNKNOWN
fi
v=`echo "$v" |sed 's/^v//'`
dirty=`sh -c 'git diff-index --name-only HEAD' 2>/dev/null` || dirty=
case "$dirty" in
'') ;;
*) # Append the suffix only if there isn't one already.
case $v in
*-dirty) ;;
*) v="$v-dirty" ;;
esac ;;
esac
# Omit the trailing newline, so that m4_esyscmd can use the result directly.
echo "$v" | tr -d '\012'
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