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#!/bin/sh
GVF=GIT-VERSION-FILE
DEF_VER=0.6.GITGUI
LF='
'
tree_search ()
{
head=$1
tree=$2
for p in $(git rev-list --parents --max-count=1 $head 2>/devnull)
do
test $tree = $(git rev-parse $p^{tree} 2>/dev/null) &&
vn=$(git describe --abbrev=4 $p 2>/dev/null) &&
case "$vn" in
gitgui-[0-9]*) echo $vn; break;;
esac
done
}
# We may be a subproject, so try looking for the merge
# commit that supplied this directory content if we are
# not at the toplevel. We probably will always be the
# second parent in the commit, but we shouldn't rely on
# that fact.
#
# If we are at the toplevel or the merge assumption fails
# try looking for a gitgui-* tag, or fallback onto the
# distributed version file.
if prefix="$(git rev-parse --show-prefix 2>/dev/null)"
test -n "$prefix" &&
head=$(git rev-list --max-count=1 HEAD -- . 2>/dev/null) &&
tree=$(git rev-parse --verify "HEAD:$prefix" 2>/dev/null) &&
VN=$(tree_search $head $tree)
case "$VN" in
gitgui-[0-9]*) : happy ;;
*) (exit 1) ;;
esac
then
VN=$(echo "$VN" | sed -e 's/^gitgui-//;s/-/./g');
elif VN=$(git describe --abbrev=4 HEAD 2>/dev/null) &&
case "$VN" in
gitgui-[0-9]*) : happy ;;
*) (exit 1) ;;
esac
then
VN=$(echo "$VN" | sed -e 's/^gitgui-//;s/-/./g');
elif test -f version
then
VN=$(cat version) || VN="$DEF_VER"
else
VN="$DEF_VER"
fi
dirty=$(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/^GITGUI_VERSION = //' <$GVF)
else
VC=unset
fi
test "$VN" = "$VC" || {
echo >&2 "GITGUI_VERSION = $VN"
echo "GITGUI_VERSION = $VN" >$GVF
}
|
