Haketilo

    echo "usage:  $0 [OPTION]... BROWSER"

    echo

    echo "long options can be provided either in the form"

    echo "'[OPTION](=[VALUE])' or '--[OPTION] (VALUE)'."

    echo "browsers:"

    echo "    -C, chromium:      build for Chromium and derivatives"

    echo "    -M, mozilla:       build for Firefox and derivatives"

    echo "options:"

    echo "    -b, build=[LOC]:   set file/directory to use for building"

    echo "    -h, help:          print usage information and exit"

    echo "    -o, output=[LOC]:  set output file/directory"

    echo "    -s, safe:          don't delete existing directories;"

    echo "                       throw an error instead."

    echo "    -z, zip:           pack the extension as a file"

    echo

    echo "environment variables (optional)"

    echo "    HAKETILO_ZIP: command to use for generating ZIP files"

    echo "    HAKETILO_CHROMIUM: command to user to invoke Chromium"

FORCE=1

	-C | --chromium | chromium) BROWSER=chromium;;

	-M | --mozilla | mozilla)    BROWSER=mozilla;;

	-b | --build)           BUILDDIR="$2"; shift;;

	build=*) BUILDDIR="$(echo "$1" | cut -c 7-)";;

	-h | --help | help)              print_usage;;

	-o | --output)            OUTPUT="$2"; shift;;

	output=*)  OUTPUT="$(echo "$1" | cut -c 8-)";;

	-s | --safe | safe)                  FORCE=0;;

	-z | --zip | zip_ext)              MAKEZIP=1;;

	*) print_usage 2 Unrecognized option "'$1'.";;

if [ $MAKEZIP = 1 ]; then

    BUILDDIR="${BUILDDIR:-build_$BROWSER}"

    if [ "x$OUTPUT" = x ]; then

	case $BROWSER in

	    chromium) OUTPUT=build.crx;;

	    mozilla)  OUTPUT=build.xpi;;

	esac

    fi

else

    if [ "x$BUILDDIR" = x ]; then

	BUILDDIR="${OUTPUT:-build_$BROWSER}"

    fi

    OUTPUT="${OUTPUT:-$BUILDDIR}"

fi

    if [ $FORCE = 0 ]; then

	errcho "Output location '$OUTPUT' exists."

	exit 3

    else

	rm -rf "$BUILDDIR"

    fi