ack/util/cpp/make.hfiles

#!/bin/sh
: Update Files from database

PATH=/bin:/usr/bin

case $# in
1) ;;
*)	echo use: $0 file >&2
	exit 1
esac

(
IFCOMMAND="if [ -r \$FN ] ;\
	then	if cmp -s \$FN \$TMP;\
		then	rm \$TMP;\
		else	mv \$TMP \$FN;\
			echo update \$FN;\
		fi;\
	else	mv \$TMP \$FN;\
		echo create \$FN;\
	fi"
echo 'TMP=.uf$$'
echo 'FN=$TMP'
echo 'cat >$TMP <<\!EOF!'
sed -n '/^!File:/,${
/^$/d
/^!File:[	 ]*\(.*\)$/s@@!EOF!\
'"$IFCOMMAND"'\
FN=\1\
cat >$TMP <<\\!EOF!@
p
}' $1
echo '!EOF!'
echo $IFCOMMAND
) | eval "$(cat)"