if [ ! -f x264-20090704.tar.bz2 ]; then

if [ ! -d x264 ]; then
git clone git://git.videolan.org/x264.git
else
(cd x264 &&
git pull
)
fi

[ -d x264-20090704 ] || mkdir x264-20090704
(cd x264 &&
tar cf - . | (cd ../x264-20090704 && tar xf -)
)
tar cvjf x264-20090704.tar.bz2 x264-20090704

else

tar xvjf x264-20090704.tar.bz2

fi