#!/bin/bash
# convert Debian/Ubuntu's DEB package into .lzm compressed file
# which can be used as a LiveCD module
#
# Author: Tomas M. <http://www.linux-live.org>
#         Peter Chabada <http://chabada.sk>
#

if [ "$1" = "" ]; then
   echo "Convert Debian/Ubuntu's DEB package into .lzm compressed module"
   echo "usage: $0 source_filename.deb [output_file.lzm]"
   exit 1
fi

if ! which dpkg > /dev/null; then
   echo "Error: dpkg is not installed!"
   echo "You must have dpkg installed to unpack DEB package."
   exit 1
fi

PATH=.:$(dirname $0):/usr/lib:$PATH
. liblinuxlive || exit 1

TMPDIR=/tmp/deb2lzm_$$
TMPDIRCONTR=/tmp/deb2lzm_contr_$$

rm -Rf $TMPDIR
rm -Rf $TMPDIRCONTR

dpkg --extract $1 $TMPDIR
if [ $? != 0 ]; then echo "error unpacking package"; exit; fi

dpkg --control $1 $TMPDIRCONTR
if [ $? != 0 ]; then echo "error unpacking package control files"; exit; fi

echo >> $TMPDIRCONTR/control

PACKAGE=$(dpkg --field $1 package)

mkdir -p $TMPDIR/var/lib/dpkg/info
for FILE in $TMPDIRCONTR/*; do
   cp $FILE $TMPDIR/var/lib/dpkg/info/$PACKAGE.$(basename $FILE)
done

PACKAGE=$PACKAGE.lzm
if [ ! "$2" = "" ]; then PACKAGE=$2; fi
create_module $TMPDIR "$PACKAGE"
if [ $? != 0 ]; then echo "error building compressed image"; exit; fi

rm -Rf $TMPDIR
rm -Rf $TMPDIRCONTR