#!/bin/bash
#Copyright 2005 William Stearns <wstearns@pobox.com>

Usage () {
	echo "$0: /path/to/isofile /dir/where/packages/should/show/up/" >&2
	exit 1
}

#Needed utils: find grep ln mktemp mount sudo xargs

if [ -z "$2" -o -n "$3" ]; then
	echo "Incorrect number of arguments." >&2
	Usage
fi
if [ ! -r "$1" ]; then
	echo "File $1 is not readable." >&2
	Usage
fi
if [ ! -d "$2" ]; then
	echo "$2 is not a directory." >&2
	Usage
fi

TmpDir=`mktemp -d -t isomount.XXXXXX`
if [ $? -ne 0 ]; then
	echo 'Failed to make a temporary directory, exiting.' >&2
	exit 1
fi

if [ "$EUID" != "0" ] && type -path sudo >/dev/null 2>/dev/null ; then
	Sudo='sudo '
fi

$Sudo mount -r -o loop -t iso9660 "$1" "$TmpDir"

find "$TmpDir" -type f -size +0c \( -name '*.rpm' -a \! -name '*.src.rpm' \) -print0 \
 | xargs --null -r -n 20 ln -sf --target-directory="$2"