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|
#!/bin/sh
# linpopup preinst
set -e
yesno() {
retval=$1
question="$2"
while :
do
echo -n "$question"
read ans
case "x$ans" in
x[yY]*) return 0;;
x[nN]*) return 1;;
x) return $retval;; # default
x*) echo "Please respond with y or n";;
esac
done
}
case "$1" in
install)
if [ ! -s /var/state/misc/linpopup ] # nothing in that file
then
exit 0
fi
if [ "x$2" = "x" ] # nothing was supposed to be installed already
then
rm -f /var/state/misc/linpopup
exit 0
fi
if `dpkg --compare-versions $2 ge 0.9.4`
then
rm -f /var/state/misc/linpopup
exit 0
fi
cat << EOF
NOTICE:
-------
The messages file left over from your previous installation of linpopup is no
longer readable by the current version. Sorry. It will be removed.
EOF
rm -f /var/state/misc/linpopup
exit 0
;;
upgrade)
if [ ! -s /var/state/misc/linpopup ] # nothing in that file
then
exit 0
fi
if `dpkg --compare-versions $2 ge 0.9.4`
then
exit 0
fi
cat << EOF
NOTICE:
-------
You currently have a version of linpopup which uses a messages file that is
not compatible with the version you're about to install. Installing this
new version will mean that you will not be able to read any messages you
currently have stored in this file.
EOF
if yesno 0 'Continue with the install? [Y/n] '
then
rm -f /var/state/misc/linpopup
exit 0
fi
exit 1
;;
abort-upgrade)
# should I do anything here?
;;
*)
echo "preinst called with unexpected argument '$1', ignored."
;;
esac
|
