#!/bin/sh -e
# preinst script for blosxom
# copyright 2007-2008 by Gerfried Fuchs <rhonda@debian.at>
# Licenced in the same way as blosxom itself

rm_conffile() {
	PKGNAME="$1"
	CONFFILE="$2"
	if [ -e "$CONFFILE" ]; then
		md5sum="`md5sum \"$CONFFILE\" | sed -e \"s/ .*//\"`"
		old_md5sum="`dpkg-query -W -f='${Conffiles}' $PKGNAME | sed -n -e \"\\\\' $CONFFILE '{s/ obsolete$//;s/.* //p}\"`"
		if [ "$md5sum" != "$old_md5sum" ]; then
			echo "Obsolete conffile $CONFFILE has been modified by you."
			echo "Saving as $CONFFILE.dpkg-bak ..."
			mv -f "$CONFFILE" "$CONFFILE".dpkg-bak
		else
			echo "Removing obsolete conffile $CONFFILE ..."
			rm -f "$CONFFILE"
		fi
	fi
}


# cleanup for old flavors that got installed by packages prior to 2.1.0
case "$1" in
install|upgrade)
	if dpkg --compare-versions "$2" le-nl "2.1.0-1"; then
		for i in content_type.1993 content_type.html content_type.index \
			date.1993  date.html  date.index \
			foot.1993  foot.html  foot.index \
			head.1993  head.html  head.index \
			story.1993 story.html story.index ; do
			rm_conffile blosxom "/etc/blosxom/flavours/$i"
		done
		rm_conffile blosxom "/etc/blosxom/plugins/timezone"
	fi
	if [ -d /var/lib/blosxom/data/flavours ] ; then
		cd /var/lib/blosxom/data/flavours
		for i in content_type.1993 content_type.html content_type.index \
			date.1993  date.html  date.index \
			foot.1993  foot.html  foot.index \
			head.1993  head.html  head.index \
			story.1993 story.html story.index ; do
			test ! -L $i || test -f $i || rm $i
		done
	fi
esac

exit 0