change shortcut script option parsin (#73)

gapic.sh

@@ -25,7 +25,7 @@ PROTO_PATH=`pwd`
 
 # Print help and exit.
 function show_help {
-  echo "Usage: $CMD --image IMAGE --in IN_DIR --out OUT_DIR [--options PLUGIN_OPTIONS --path PATH_DIR]"
+  echo "Usage: $CMD --image IMAGE --in IN_DIR --out OUT_DIR [--path PATH_DIR]"
   echo ""
   echo "Required arguments:"
   echo "      --image  The Docker image to use. The script will attempt to pull"
@@ -35,7 +35,6 @@ function show_help {
   echo "  -o, --out    Destination directory for the completed client library."
   echo ""
   echo "Optional arguments:"
-  echo "      --options   Options to be passed to the generator plugin"
   echo "  -p, --path      The base import path for the protos. Assumed to be the"
   echo "                  current working directory if unspecified."
   echo "  -h, --help      This help information."
@@ -49,8 +48,8 @@ while true; do
     --image ) IMAGE="$2"; shift 2 ;;
     -i | --in ) IN="$2"; shift 2 ;;
     -o | --out ) OUT="$2"; shift 2 ;;
-    --options ) PLUGIN_OPTIONS="$2"; shift 2 ;;
     -p | --path ) PROTO_PATH=$2; shift 2 ;;
+    --* ) PLUGIN_OPTIONS="$PLUGIN_OPTIONS $1 $2"; shift 2 ;;
     -- ) shift; break; ;;
     * ) break ;;
   esac
@@ -92,6 +91,6 @@ docker run \
   --mount type=bind,source=$OUT,destination=/out \
   --rm \
   --user $UID \
-  --env "PLUGIN_OPTIONS=$PLUGIN_OPTIONS" \
-  $IMAGE
+  $IMAGE \
+  $PLUGIN_OPTIONS
 exit $?