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executable file 39 lines (31 sloc) 568 Bytes
#!/bin/sh
# Based on git's GIT-VERSION-GEN.
VF=VERSION-FILE
DEF_VER=v2.2
LF='
'
if test -d .git -o -f .git &&
VN=$(git describe --abbrev=4 HEAD 2>/dev/null) &&
case "$VN" in
*$LF*) (exit 1) ;;
v[0-9]*)
git update-index -q --refresh
test -z "$(git diff-index --name-only HEAD --)" ||
VN="$VN-dirty" ;;
esac
then
VN=$(echo "$VN" | sed -e 's/-/./g');
else
VN="$DEF_VER"
fi
VN=$(expr "$VN" : v*'\(.*\)')
if test -r $VF
then
VC=$(sed -e 's/^VERSION=//' <$VF)
else
VC=unset
fi
test "$VN" = "$VC" || {
echo >&2 "VERSION=$VN"
echo "VERSION=$VN" >$VF
}