board_status: Allow for parsing longopts

This converts the argument parsing to allow us to add longopts
using GNU getopt(1).

Shortopts should be reserved for general parameters. Longopts can be
used to tweak specific behaviors. For example, we might wish to add
options to set SSH port, timeout, and authentication parameters
with "--ssh-port", "--ssh-timeout", "--ssh-identity", etc.

Change-Id: Idee5579079dbbb7296ad98f5d6025b01aab55452
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: https://review.coreboot.org/14523
Tested-by: build bot (Jenkins)
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>

util/board_status/board_status.sh

@@ -188,31 +188,57 @@ Options
 "
 }
 
-while getopts "Chi:r:s:S:u" opt; do
-	case "$opt" in
-		h)
+getopt -T
+if [ $? -ne 4 ]; then
+	echo "GNU-compatible getopt(1) required."
+	exit $EXIT_FAILURE
+fi
+
+# TODO: add longopts in the quotes after -l
+ARGS=$(getopt -o Chi:r:s:S:u -l "" -n "$0" -- "$@");
+if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
+eval set -- "$ARGS"
+while true ; do
+	case "$1" in
+		-h)
 			show_help
 			exit $EXIT_SUCCESS
 			;;
-		C)
+		-C)
 			CLOBBER_OUTPUT=1
 			;;
-		i)
-			COREBOOT_IMAGE="$OPTARG"
+		-i)
+			shift
+			COREBOOT_IMAGE="$1"
 			;;
-		r)
-			REMOTE_HOST="$OPTARG"
+		-r)
+			shift
+			REMOTE_HOST="$1"
 			;;
-		s)
-			SERIAL_DEVICE="$OPTARG"
+		-s)
+			shift
+			SERIAL_DEVICE="$1"
 			;;
-		S)
-			SERIAL_PORT_SPEED="$OPTARG"
+		-S)
+			shift
+			SERIAL_PORT_SPEED="$1"
 			;;
-		u)
+		-u)
 			UPLOAD_RESULTS=1
 			;;
+		--)
+			shift
+			if [ -n "$*" ]; then
+				echo "Non-option parameters detected: '$*'"
+				exit $EXIT_FAILURE
+			fi
+			break
+			;;
+		*)
+			echo "error processing options at '$1'"
+			exit $EXIT_FAILURE
 	esac
+	shift
 done
 
 grep -rH 'coreboot.org' .git/config >/dev/null 2>&1