various: use long options, rework usages

1 files changed, 35 insertions, 19 deletions

diff --git a/abuild-keygen.in b/abuild-keygen.in
index 9b748d3..34af0ee 100644
--- a/abuild-keygen.in
+++ b/abuild-keygen.in
@@ -90,30 +90,46 @@ do_keygen() {
 	msg ""
 }
 
-# print usage and exit
 usage() {
-	echo "abuild-keygen $abuild_ver"
-	echo "usage: abuild-keygen [-ih]"
-	echo "options:"
-	echo " -a  Set PACKAGER_PRIVKEY=<generated key> in $abuild_userconf"
-	echo " -i  Install public key into /etc/apk/keys using sudo"
-	echo " -h  Show this help"
-	echo " -n  Non-interactive. Use defaults"
-	echo " -q  Quiet mode"
-	echo ""
-	exit 1
+	cat >&2 <<__EOF__
+$prog $abuild_ver - generate signing keys
+Usage: $prog [-a|--append] [-i|--install] [-n]
+Options:
+  -a, --append   Set PACKAGER_PRIVKEY=<generated key> in $abuild_userconf
+  -i, --install  Install public key into /etc/apk/keys using sudo
+  -n             Non-interactive. Use defaults
+  -q, --quiet
+  -h, --help     Show this help
+
+__EOF__
 }
 
+append_config=
+install_pubkey=
+non_interactive=
+quiet=
 
-while getopts "ahinq" opt; do
-	case $opt in
-	a) append_config=yes;;
-	h) usage;;
-	i) install_pubkey=yes;;
-	n) non_interactive=yes;;
-	q) quiet=-quiet;;
+args=`getopt -o ainqh --long append,install,quiet,help -n "$prog" -- "$@"`
+if [ $? -ne 0 ]; then
+	usage
+	exit 2
+fi
+eval set -- "$args"
+while true; do
+	case $1 in
+		-a|--append) append_config=1;;
+		-i|--install) install_pubkey=1;;
+		-n) non_interactive=yes;;
+		-q|--quiet) quiet=1;; # suppresses msg
+		-h|--help) usage; exit;;
+		--) shift; break;;
+		*) exit 1;; # getopt error
 	esac
+	shift
 done
-shift $(( $OPTIND - 1))
+if [ $# -ne 0 ]; then
+	usage
+	exit 2
+fi
 
 do_keygen