if [ $# -ne 2 ]
then
	echo usage: $0 platform version
	exit 1
fi

RELEASE=../$1
TARGET=$RELEASE/$2
BACKUP=${TARGET}.bak

if [ ! -d $1 ]
then
	echo $0: no nightly build for $1 platform
	exit 2
fi

if [ ! -d $RELEASE ]
then
	echo $0: no release directory for $1 platform
	exit 2
fi

if [ ! -d $TARGET ]
then
	echo $0: creating new directory for $1 version $2
else
	echo $0: backing up $TARGET
	if [ -d $BACKUP ]
	then
		rm -rf $BACKUP
	fi
	mv $TARGET $BACKUP
fi

mkdir $TARGET
cp -r $1/* $TARGET