#! /bin/sh

if [ $# = 0 ]; then
	echo "usage: ./Extract [pkgname]"
	echo "       You should have a file 'pkgname.tar.gz' and the"
	echo "       corresponding context diffs 'pkgname.dif' in your"
	echo "       current directory."
	exit 1
fi
tar xzf $1.tar.gz
cd $1
patch -s -p0 < ../$1.dif
cd ..
exit 0