add self-contained and unified option parsing

releng/inc/releng_getopts.inc

@@ -0,0 +1,55 @@
+SELF=$(basename $0)
+RELENG_XORRISO=0
+KEEP=0
+SIMULATE_FAILURE=0
+
+usage() {
+cat << EOF
+
+Usage: $SELF -x path/to/xorriso [-k0|1] [-f0|1] [-h]
+       -x  absolute or relative path to binary to be run.
+       -k  keep selfgenerated data, values 0,1 default 0.
+       -f  simulate failure, values 0,1 default 0.
+EOF
+}
+
+while getopts “x:k:f:h” OPTION
+do
+  case $OPTION in
+       x)
+         RELENG_XORRISO=$OPTARG
+         ;;
+       k)
+         KEEP=$OPTARG
+         ;;
+       f)
+         SIMULATE_FAILURE=$OPTARG
+         ;;
+       h)
+         usage
+         exit 0
+         ;;
+       *)
+         usage
+         exit 31
+         ;;
+  esac
+done
+
+if [ ! -x $RELENG_XORRISO ]; then
+ usage
+ printf "\n${SELF}: -x  absolute or relative path to binary to be run.\n\n"
+ exit 31
+fi
+
+if [ x"$KEEP" != x"0" -a x"$KEEP" != x"1" ]; then
+ usage
+ printf "\n${SELF}: -k  keep selfgenerated data, values 0,1 default 0.\n\n"
+ exit 31
+fi
+
+if [ x"$SIMULATE_FAILURE" != x"0" -a x"$SIMULATE_FAILURE" != x"1" ]; then
+ usage
+ printf "\n${SELF}: -f  simulate failure, values 0,1 default 0.\n\n"
+ exit 31
+fi

releng/inc/test_releng_getopt

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -e
+
+. releng_getopts.inc
+
+printf "\nRELENG_XORRISO   =${RELENG_XORRISO}"
+printf "\nKEEP             =${KEEP}"
+printf "\nSIMULATE_FAILURE =${SIMULATE_FAILURE}"
+printf "\n"
+
+exit 0