1 files changed, 23 insertions, 1 deletions
diff --git a/src/adoc b/src/adoc
index 85d2387..b52dd60 100755
--- a/src/adoc
+++ b/src/adoc
@@ -3,9 +3,31 @@ set -euo pipefail
 
 
 usage() {
-	echo 'Usage: adoc [-x] [-s] [-n INDENT_LEN] [FILENAME.adoc]'
+	echo 'Usage: adoc [-x] [-s] [-n INDENT_LEN] FILENAME.adoc'
 }
 
+EXTRACT_CODE=false
+STANDALONE=false
+INDENT_LEN=0
+while getopts 'xsn:' flag; do
+	case "$flag" in
+		(x)
+			EXTRACT_CODE=true
+			;;
+		(s)
+			STANDALONE=true
+			;;
+		(n)
+			INDENT_LEN="$OPTARG"
+			;;
+		(*)
+			usage >&2
+			exit 2
+			;;
+	esac
+done
+shift $((OPTIND - 1))
+
 FILENAME="${1:-}"
 eval "$(assert-arg -- "$FILENAME" 'FILENAME.adoc')"