if [ ! -f libdca-20090115.tar.bz2 ]; then

if [ ! -d libdca ]; then
svn checkout svn://svn.videolan.org/libdca/trunk libdca
else
(cd libdca &&
svn update
)
fi

[ ! -d libdca-20090115 ] && mkdir libdca-20090115
(cd libdca &&
tar cf - . | (cd ../libdca-20090115 && tar xf -)
)
tar cvjf libdca-20090115.tar.bz2 libdca-20090115

else

tar xvjf libdca-20090115.tar.bz2

fi