info() {

echo "+ $@" >&2

}

warning() {

echo "! $@" >&2

}

error() {

echo "* $@" >&2

exit 1

}

npath() {

python -c "import sys, os; print os.path.normpath(os.path.abspath(os.path.join(*sys.argv[1:])))" $@

}

set_downloader() {

downloader=""

[ "$downloader" == "" ] && which curl >&/dev/null && downloader="curl"

[ "$downloader" == "" ] && which wget >&/dev/null && downloader="wget"

case $downloader in

curl)

function downloader { curl -LO "$1"; }

;;

wget)

function downloader { wget "$1"; }

;;

*)

error "no downloader found (either curl or wget)"

;;

esac

}

readconfig() {

local x

for x in $@

do

[ -f "$x" ] && { info "loading config from $x"; . "$x" ; }

done

}