#! /bin/sh

prefix=%%PREFIX%%
sysconfdir=%%SYSCONFDIR%%

case "x$2" in

"xPRE-INSTALL")

	# Preserve original files from being overwritten.

	if [ "x$prefix" = "x/usr" ]; then
		cd $prefix
		for i in bin/lp bin/lpq bin/lpr bin/lprm sbin/lpc sbin/lpd \
			share/man/man1/lp.1.gz share/man/man1/lpq.1.gz \
			share/man/man1/lpr.1.gz share/man/man1/lprm.1.gz \
			share/man/man5/printcap.5.gz share/man/man8/lpc.8.gz \
			share/man/man8/lpd.8.gz ; do
			cp -p $i $i.orig
		done
	fi

	;;

"xPOST-INSTALL")

	cd $sysconfdir

	# Preserve original configuration files from being overwritten.
	# Restore previously saved configuration if possible.

	if [ "x$sysconfdir" = "x/etc" ]; then
		for i in lpd.conf lpd.perms printcap; do
			[ -f $i ] && mv $i $i.orig
			[ -f $i.saved ] && mv $i.saved $i || cp $i.sample $i
		done
	else
		for i in lpd.conf lpd.perms printcap; do
			[ -f $i.saved ] && mv $i.saved $i || cp $i.sample $i
		done
	fi

	# This is a trick to detect if the user installed a new world at deinstall stage.

	if [ "x$prefix" = "x/usr" ]; then
		cd $prefix
		for i in bin/lp bin/lpq bin/lpr bin/lprm sbin/lpc sbin/lpd \
			share/man/man1/lp.1.gz share/man/man1/lpq.1.gz \
			share/man/man1/lpr.1.gz share/man/man1/lprm.1.gz \
			share/man/man5/printcap.5.gz share/man/man8/lpc.8.gz \
			share/man/man8/lpd.8.gz ; do
			touch $i.orig
		done
	fi

	;;

"xDEINSTALL")

	cd $sysconfdir

	# Remove unchanged files.

	for i in lpd.conf lpd.perms printcap; do
		cmp -s $i $i.sample && rm -f $i
	done

	# Remove backup files if installworld overwrited LPRng files.

	if [ "x$prefix" = "x/usr" ]; then
		cd $prefix
		for i in bin/lp bin/lpq bin/lpr bin/lprm sbin/lpc sbin/lpd \
			share/man/man1/lp.1.gz share/man/man1/lpq.1.gz \
			share/man/man1/lpr.1.gz share/man/man1/lprm.1.gz \
			share/man/man5/printcap.5.gz share/man/man8/lpc.8.gz \
			share/man/man8/lpd.8.gz ; do
			[ $i -nt $i.orig ] && rm $i.orig
		done
	fi

	;;

"xPOST-DEINSTALL")

	cd $sysconfdir

	# Save remaining modified files so we can restore them at next install.
	# Restore original files when LPRng files haven't changed.

	for i in lpd.conf lpd.perms printcap; do
		if [ "x$sysconfdir" = "x/etc" ]; then
			if [ -f $i ]; then
				mv $i $i.saved
			else
				[ -f $i.orig ] && mv $i.orig $i
			fi
		else
			[ -f $i ] && mv $i $i.saved
		fi
	done

	# Restore backup files.

	if [ "x$prefix" = "x/usr" ]; then
		cd $prefix
		for i in bin/lp bin/lpq bin/lpr bin/lprm sbin/lpc sbin/lpd \
			share/man/man1/lp.1.gz share/man/man1/lpq.1.gz \
			share/man/man1/lpr.1.gz share/man/man1/lprm.1.gz \
			share/man/man5/printcap.5.gz share/man/man8/lpc.8.gz \
			share/man/man8/lpd.8.gz ; do
			[ -f $i.orig ] && mv $i.orig $i
		done
	fi

	;;

esac

exit 0