#!/bin/sh
set -e
. bin/shell-env
Z=$1
shift
mkdir -p $HASHDIR
CURRENT_HASH=$($M4 -DHASHING m4/nsc.m4 "$@" | md5sum | cut -d " " -f1)
PREV_HASH=$(if [ -s $HASHDIR/$Z ] ; then cat $HASHDIR/$Z ; fi)
if [ "X$CURRENT_HASH" = "X$PREV_HASH" ] ; then
	echo "-- $Z: No changes"
	touch $ZONEDIR/$Z $HASHDIR/$Z
else
	$M4 -DVERS=$VERSDIR/$Z m4/nsc.m4 "$@" >$ZONEDIR/$Z.new
	mv $ZONEDIR/$Z.new $ZONEDIR/$Z
	echo "** $Z: New version $(sed -e "s/^;;; VERSION: //; t; d" $ZONEDIR/$Z)"
	echo $CURRENT_HASH >$HASHDIR/$Z
fi