#!/bin/sh
# This short script checks if installing a package will overwrite any files 
# on the system.
# It should output directories, but any FILES it lists are the ones that will
# be overwritten
# The doinst.sh, if present, is also outputted to stdout for the admin to 
# review.
# USAGE:  slackbuild_sanity.sh /path/to/package.tgz
#
# Written by Phillip Warner <pc_warner@yahoo.com>

# Make sure we have an input arg and that it is a gzip file/archive
if [ -z $1 ] || [ $(file $1 | grep -c 'gzip compressed data') -ne 1 ]
then 
	echo "USAGE: $0 /path/to/package.tgz"
	exit 1
fi

# Make sure it is actually a Slackware package
if ! $(tar -tf  $1 install/slack-desc &> /dev/null)
then 
	echo "$1 has gzip compressed data, but it is NOT a slackware package!"
	exit 1
fi

for i in `tar tzf $1`
do
	if [ -e "/$i" ]; then
		if [ ! -d "/$i" ]; then 
			echo -n "*"
		else
			echo -n " "
		fi
		echo "found" $i
	fi
done

echo
echo "Outputting contents of doinst.sh"
# Test for doinst.sh
tar ztf $1 install/doinst.sh &> /dev/null

# If it is there then cat it to stdout
if [ $? == 0 ]; then 
	tar -zxO install/doinst.sh -f $1
else
	echo "doinst.sh not found"
fi