bin/bright: Add a toggle feature

1 files changed, 17 insertions, 0 deletions

diff --git a/bin/bright b/bin/bright
index 04c83f5..bda2643 100755
--- a/bin/bright
+++ b/bin/bright
@@ -39,6 +39,21 @@ inc_b()
 	set_b ${b}
 }
 
+tog_b()
+{
+	local b=
+
+	b=$(get_b)
+	case ${b} in
+		[0-9] | [1-4][0-9])
+			set_b 100;;
+		[5-9][0-9] | 100)
+			set_b 0;;
+	esac
+
+	return 0
+}
+
 usage()
 {
 	printf 'Usage: %s {<direction>|<value>}\n' "${0}"
@@ -46,6 +61,7 @@ usage()
 	printf 'Where <direction> is any word beginning with (in any case):\n'
 	printf '  * "U" for up\n'
 	printf '  * "D" for down\n'
+	printf '  * "T" for toggle (between 0 and 100)\n'
 	printf 'And <value> is any integer between 0 and 100 inclusive\n'
 
 	return 0
@@ -66,6 +82,7 @@ main()
 	case "${dir}" in
 		[Uu]*) inc_b 20;;
 		[Dd]*) inc_b -20;;
+		[Tt]*) tog_b;;
 		*[!0-9]* | '')
 			usage 1>&2
 			return 1