git-commit-vandalism/GIT-VERSION-GEN
Junio C Hamano 204d409247 GIT-VERSION-FILE: check ./version first.
When somebody else extracts git tarball inside a larger project,
'git describe' would reported the version number of that upper
level project.

Sometimes, using the consistent versioning across subdirectories
of a larger project is useful, but it may not always be the
right thing to do.

This changes the script to check ./vertion file first, and then
fall back to "git describe".  This way, by default, tarball
distribution will get our own version.  If the upper level wants
to use consistent versioning across its subdirectories, its
Makefile can overwrite ./version file to force whatever version
number they want to give us before descending into us.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-14 15:25:27 -08:00

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#!/bin/sh
GVF=GIT-VERSION-FILE
DEF_VER=v1.5.0.GIT
LF='
'
# First see if there is a version file (included in release tarballs),
# then try git-describe, then default.
if test -f version
then
VN=$(cat version) || VN="$DEF_VER"
elif test -d .git &&
VN=$(git describe --abbrev=4 HEAD 2>/dev/null) &&
case "$VN" in
*$LF*) (exit 1) ;;
v[0-9]*) : happy ;;
esac
then
VN=$(echo "$VN" | sed -e 's/-/./g');
else
VN="$DEF_VER"
fi
VN=$(expr "$VN" : v*'\(.*\)')
dirty=$(sh -c 'git diff-index --name-only HEAD' 2>/dev/null) || dirty=
case "$dirty" in
'')
;;
*)
VN="$VN-dirty" ;;
esac
if test -r $GVF
then
VC=$(sed -e 's/^GIT_VERSION = //' <$GVF)
else
VC=unset
fi
test "$VN" = "$VC" || {
echo >&2 "GIT_VERSION = $VN"
echo "GIT_VERSION = $VN" >$GVF
}