#!/bin/sh
# Copyright 1994, 1998, 2000 Patrick Volkerding, Concord, CA, USA
# Copyright 2001, 2003 Slackware Linux, Inc., Concord, CA, USA
# Copyright 2007, 2009, 2017, 2018 Patrick Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
if [ $# = 0 ]; then
cat << EOF
Usage: explodepkg package_name [package_name2, ...]
Explodes a Slackware compatible software package
(or any tar+{gzip,bzip2,lz,xz archive) in the current directory.
Equivalent to (for each package listed):
( umask 000 ; cat package_name | COMPRESSOR -dc | tar xpvf package_name )
Note: This should only be used for debugging or examining packages, not for
installing them. It doesn't execute installation scripts or update the package
indexes in /var/lib/pkgtools/packages and /var/lib/pkgtools/scripts.
EOF
fi
# Set maximum number of threads to use. By default, this will be the number
# of CPU threads:
THREADS="$(nproc)"
# Main loop:
for PKG in $* ; do
echo "Exploding package $PKG in current directory:"
# Determine extension:
packageext="$( echo $PKG | rev | cut -f 1 -d . | rev)"
# Determine compression utility:
case $packageext in
'tgz' )
packagecompression=gzip
;;
'gz' )
packagecompression=gzip
;;
'tbz' )
if which lbzip2 1> /dev/null 2> /dev/null ; then
packagecompression=lbzip2
else
packagecompression=bzip2
fi
;;
'bz2' )
if which lbzip2 1> /dev/null 2> /dev/null ; then
packagecompression=lbzip2
else
packagecompression=bzip2
fi
;;
'tlz' )
if which plzip 1> /dev/null 2> /dev/null ; then
packagecompression="plzip --threads=${THREADS}"
elif which lzip 1> /dev/null 2> /dev/null ; then
packagecompression=lzip
else
echo "ERROR: lzip compression utility not found in \$PATH."
exit 3
fi
;;
'lz' )
if which plzip 1> /dev/null 2> /dev/null ; then
packagecompression="plzip --threads=${THREADS}"
elif which lzip 1> /dev/null 2> /dev/null ; then
packagecompression=lzip
else
echo "ERROR: lzip compression utility not found in \$PATH."
exit 3
fi
;;
'lzma' )
packagecompression=lzma
;;
'txz' )
packagecompression="xz --threads=${THREADS}"
;;
'xz' )
packagecompression="xz --threads=${THREADS}"
;;
esac
( umask 000 ; cat $PKG | $packagecompression -dc | tar --xattrs --xattrs-include='*' --keep-directory-symlink -xpvf - 2> /dev/null )
if [ -r install/doinst.sh ]; then
echo
echo "An installation script was detected in ./install/doinst.sh, but"
echo "was not executed."
fi
done
