#!/bin/sh
#----------------------------------------------------------------------------
# /usr/bin/undeb - undeb
#
# Creation   :  2015-04-25 holbru
# Last update:  $Id$
#
# Based on unrpm from Kent Robotti 1999-12-03
# Copyright (c) 2015-@@YEAR@@ Holger Bruenjes, holgerbruenjes(at)gmx(dot)net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------
MSG() {
cat <<EOF

# This script 'undeb' extracts a Debian.deb package.
#
# Kent Robotti 3-12-99
#
# USAGE: undeb -x -d directory package.deb  
# USAGE: undeb -l package.deb   <List contents of debian package>
#
# Extract debian package to current directory.
# Example: undeb -x -d . package.deb  
# Extract debian package to a directory called fooboo, create 
# the directory if it doesn't exist: # mkdir fooboo
# Example: undeb -x -d fooboo package.deb  
# Extract debian package to /mnt/linux directory.
# Example: undeb -x -d /mnt/linux package.deb  

EOF
}

case "${1}" in
""|--help|-h)
    MSG
    exit 0
    ;;
esac


if [ "${1}" = "-x" -a "${2}" = "-d" ]
then
    _path="${3}"

    if [ "${_path}" = "/" ]
    then
        echo "No extract to '/' "
        echo "extract to /tmp/$(basename "${4}")"
        _path="/tmp/$(basename "${4}")"
    fi

    if [ ! -d "${_path}" ]
    then
        mkdir -pv -m 1777 "${_path}"
    fi

    pwd=${PWD}
    echo
    dpkg-deb -X  ${4} ${_path} || exit 1
    echo
    echo "${4} extracted to ${_path}"
    echo
    exit
fi

if [ "${1}" = "-l" -a -s "${2}" ]
then
    if [ -n "${PAGER}" ]
    then
        pager="${PAGER}"
    elif type -all less >/dev/null 2>&1 
    then
        pager=less
    elif type -all more >/dev/null 2>&1 
    then
        pager=more
    else
        pager="echo No PAGER found, no more or less."
        exit 1
    fi

    dpkg-deb -I ${2} > /tmp/deb.tmp
    echo >> /tmp/deb.tmp
    dpkg-deb -c ${2} >> /tmp/deb.tmp
    tmp=/tmp/deb.tmp
    ${pager} ${tmp}   
    rm -f /tmp/deb.tmp  
fi