#!/bin/bash
#
# this script is freely available
# and comes with NO WARRANTY.
#
# Vincent Batts, vbatts@gmail.com, 2008-09


RPM=$1
OWD=$(pwd)
OUTPUT=${OUTPUT:-/tmp}
PRGNAM=$(rpm -qp --qf %{NAME} $RPM )
ARCH=$(rpm -qp --qf %{ARCH} $RPM )
VERSION=$(rpm -qp --qf %{VERSION} $RPM )
BUILD=$(rpm -qp --qf %{RELEASE} $RPM )
WRKDIR="/tmp/$PRGNAM-rpm.$RANDOM"

if [ $UID != 0 ] ; then 
    echo "Please run as root"
    exit 1
fi

mkdir -p -m 0755 $WRKDIR/install || exit 1
cd $WRKDIR || exit 1

## Create our slack-desc
rpm -qp --qf %{SUMMARY} $OWD/$RPM | sed -l 70 -r "s/^(.*)/$PRGNAM: $PRGNAM - \1\n/" > $WRKDIR/install/slack-desc || exit 1
rpm -qp --qf %{DESCRIPTION} $OWD/$RPM | sed -l 70 -r "s/^/$PRGNAM: /" >> $WRKDIR/install/slack-desc || exit 1

## i'm only using the {pre,post}install scripts, no {pre,post}uninstall scripts.
echo '#!/bin/sh' > $WRKDIR/install/doinst.sh || exit 1
if [ "$(rpm -qp --qf %{PREIN} $OWD/$RPM )" != '(none)' ] ; then
  rpm -qp --qf %{PREIN} $OWD/$RPM >> $WRKDIR/install/doinst.sh || exit 1
fi
echo "" >> $WRKDIR/install/doinst.sh || exit 1
if [ "$(rpm -qp --qf %{POSTIN} $OWD/$RPM )" != '(none)' ] ; then
  rpm -qp --qf %{POSTIN} $OWD/$RPM >> $WRKDIR/install/doinst.sh || exit 1
fi
echo "" >> $WRKDIR/install/doinst.sh || exit 1

## extract the rpm
rpm2cpio $OWD/$RPM | cpio -idvm  || exit 1
find . -type d -perm 700 -exec chmod 755 {} \; || exit 1

## make a slack package
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-${BUILD}.tgz || exit 1