Revamp bl to be more like my other scriptsHEADmaster

Including getopts, and defaults.

1 files changed, 82 insertions, 40 deletions

diff --git a/bl b/bl
index 898faee..43e2125 100755
--- a/bl
+++ b/bl
@@ -2,46 +2,88 @@
 
 ## Backlight controller generic: use either light or xbacklight
 
-CMD=`crcparse bl`
+#{{{ printhelp
+printhelp () {
+	printf "Backlight control interface\n"
+	printf "bl -h\n"
+	printf "bl [-xX] [-idg]\n"
+	printf "bl [-xX] -I X\n"
+	printf "bl [-xX] -D X\n"
+	printf "bl [-xX] -s X\n"
+	printf "\t-i)  \tincreases the backlight\n"
+	printf "\t-I) X\tincreases the backlight by X percent\n"
+	printf "\t-d)  \tdecreases the backlight\n"
+	printf "\t-D) X\tdecreases the backlight by X percent\n"
+	printf "\t-s) X\tsets the backlight to X percent\n"
+	printf "\t-g)  \tgets the backlight\n"
+	printf "\t-h)  \tprints this help message.\n"
+	printf "\t-x)  \tuse xbacklight instead of light.\n"
+	printf "\t-X)  \tdon't use xbacklight instead of light.\n"
+}
+#}}}
 
+#{{{ defaults
+CMD="light"
+ARG="get"
+AMT="1"
+#}}}
+
+#{{{ getopts2
+while getopts "hxXidgI:D:s:" o; do case "${o}" in
+	x) CMD="xbacklight" ;;
+	X) CMD="light" ;;
+	i) ARG="inc" ;;
+	d) ARG="dec" ;;
+	g) ARG="get" ;;
+	I)
+		ARG="inc"
+		AMT="$OPTARG"
+		;;
+	D)
+		ARG="dec"
+		AMT="$OPTARG"
+		;;
+	s)
+		ARG="set"
+		AMT="$OPTARG"
+		;;
+	*) printhelp ;;
+esac done
+#}}}
+
+#{{{ main
 case "$CMD" in
-  "light")
-    case "$1" in
-      "-i")
-        light -A "${2:-1%}"
-        ;;
-      "-d")
-        light -U "${2:-1%}"
-        ;;
-      "-s")
-        light -S "$2"
-        ;;
-      "-g"|"")
-        light -G
-        ;;
-      "*")
-        printf "$CMD: $1 not understood. Treating it as a direct command."
-        light "$@"
-        ;;
-    esac
-    ;;
-  "xbacklight")
-    case "$1" in
-      "-i")
-        xbacklight -inc "${2:-1}"
-        ;;
-      "-d")
-        xbacklight -dec "${2:-1}"
-        ;;
-      "-s")
-        xbacklight -set "$2"
-        ;;
-      "-g"|"")
-        xbacklight -get
-        ;;
-      "*")
-        printf "$CMD: $1 not understood. Treating it as a direct command."
-        xbacklight "$@"
-        ;;
-    esac
+	"light")
+		case "$ARG" in
+			"inc")
+				light -A "$AMT%"
+				;;
+			"dec")
+				light -U "$AMT%"
+				;;
+			"set")
+				light -S "$AMT%"
+				;;
+			"get")
+				light -G
+				;;
+		esac
+		;;
+	"xbacklight")
+		case "$ARG" in
+			"inc")
+				light -A "$AMT"
+				;;
+			"dec")
+				light -U "$AMT"
+				;;
+			"set")
+				light -S "$AMT"
+				;;
+			"get")
+				light -G
+				;;
+		esac
+		;;
 esac
+#}}}