#!/bin/sh
set -e

# From http://wiki.debian.org/DpkgConffileHandling
# Remove a no-longer used conffile
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
}

if [ "$1" = install ] || [ "$1" = upgrade ]; then
    ## Transition from the old-style udev setup to the old-style dh_installudev setup
    ## Then dh_installudev will take care of the transition to the new dh_installudev setup
    if [ -e "/etc/udev/rules.d/025_libsane.rules" ]; then
        mv /etc/udev/rules.d/025_libsane.rules /etc/udev/rules.d/z60_libsane.rules
    fi

    ## Remove obsolete /etc/modprobe.d/libsane conffile
    if dpkg --compare-versions "$2" le "1.0.19-25"; then
	rm_conffile libsane /etc/modprobe.d/libsane
    fi
fi

#DEBHELPER#