POWAUR-VERSION-GEN

#!/bin/sh

# From git

PVF=POWAUR-VERSION-FILE
DEF_VER=v0.1.4.1

LF='
'

# First see if there is a version file, then try git-describe, then default

if test -f version; then
	VN=$(cat version) || VN="$DEF_VER"
elif test -d .git &&
	VN=$(git describe --match "v[0-9]*" --abbrev=4 2>/dev/null) &&
	case "$VN" in
	*$LF*)
		(exit 1)
		;;
	esac
then
	VN=$(echo "$VN" | sed -e's/-/./g')
else
	VN="$DEF_VER"
fi

# Check whether we need to rewrite to PVF
VN=$(expr "$VN" : v*'\(.*\)')

if test -r $PVF; then
	VC=$(sed -e 's/^POWAUR_VERSION = //' <$PVF)
else
	VC=unset
fi

test "$VN" = "$VC" || {
	echo >&2 "POWAUR_VERSION = $VN"
	echo "POWAUR_VERSION = $VN" > $PVF
}