From 62c5df3ab5e2a7f9087bd92941ac1d171a29186b Mon Sep 17 00:00:00 2001
From: Harald Pfeiffer <harald.pfeiffer@xmart.de>
Date: Wed, 27 Jun 2018 13:44:00 +0200
Subject: Code sanitation and line length limiting

---
 bin/batman | 47 ++++++++++++++++++++++++++++++-----------------
 1 file changed, 30 insertions(+), 17 deletions(-)

diff --git a/bin/batman b/bin/batman
index 5b873d7..9928931 100755
--- a/bin/batman
+++ b/bin/batman
@@ -1,24 +1,31 @@
 #!/bin/sh
 
-declare -x VOERBOOS
+export VOERBOOS
 RETVAL=0;export RETVAL
-BATVAL="$(echo "scale=0;$(cat /sys/class/power_supply/BAT0/charge_now)*100/$(cat /sys/class/power_supply/BAT0/charge_full)"|bc -l)";export BATVAL
-BATSTATE="`cat /sys/class/power_supply/BAT0/status`";export BATSTATE
+CNOW="$(cat /sys/class/power_supply/BAT0/charge_now)"
+CFUL="$(cat /sys/class/power_supply/BAT0/charge_full)"
+BATVAL="$(echo "scale=0;$CNOW*100/$CFUL"|bc -l)";export BATVAL
+unset CNOW CFUL
+BATSTATE="$(cat /sys/class/power_supply/BAT0/status)";export BATSTATE
 BATFILE="/tmp/batman.sd";export BATFILE
 export OPTCNT=0
-function batmobile {
+batmobile() {
 	if [ "$BATVAL" -le 5 ];then
 		case "$BATSTATE" in
 			"Charging")
 				MSG="Battery charged at $BATVAL% with status \"$BATSTATE\", no shutdown."
-				[ ! -z "$VOERBOOS" ]&&[ "$VOERBOOS" -eq 1 ]&&echo "$MSG"||true
-				logger -p"info" -t"batman" "Battery charged at $BATVAL% with status \"$BATSTATE\", no shutdown."||RETVAL=$(("$RETVAL"+$?))
+				[ ! -z "$VOERBOOS" ]&&[ "$VOERBOOS" -eq 1 ]&&echo "$MSG"
+				LMSG="Battery charged at $BATVAL% with status \"$BATSTATE\", no shutdown."
+				logger -p"info" -t"batman" "$LMSG"||RETVAL=$(("$RETVAL"+$?))
+				unset LMSG
 				[ -e "$BATFILE" ]&&/usr/sbin/shutdown -c >/dev/null 2>&1&&rm "$BATFILE"
 				SDCRV="$?"
 				case "$SDCRV" in
 					0) logger -p"info" -t"batman" "Shutdown cancelled.";;
 					*)
-						logger -p"warn" -t"batman" "$BATFILE exists but couldn't cancel shutdown!"
+						LMSG="batman" "$BATFILE exists but couldn't cancel shutdown!"
+						logger -p"warn" -t"$LMSG"
+						unset LMSG
 						RETVAL=$(("$RETVAL"+"$SDCRV"))
 					;;
 				esac
@@ -26,30 +33,36 @@ function batmobile {
 			*)
 				MSG="Battery charged at $BATVAL%, powering down."
 				[ ! -z "$VOERBOOS" ]&&[ "$VOERBOOS" -eq 1 ]&&echo "$MSG"||true
-				logger -pwarn -t"batman" "$MSG"||RETVAL=$(("$RETVAL"+$?))
+				logger -pwarn -t"batman" "$MSG";RETVAL=$((RETVAL+"$?"))
 				if [ ! -e "$BATFILE" ];then
-					/usr/sbin/shutdown -P +2 "Battery low and discharging, powering down. (batman)"&&touch "$BATFILE"||RETVAL=$(("$RETVAL"+$?))
+					SMSG="Battery low and discharging, powering down. (batman)"
+					/usr/sbin/shutdown -P +2 "$SMSG"&&touch "$BATFILE"
+					RETVAL=$((RETVAL+"$?"))
 				fi
 			;;
 		esac
 	else
 		MSG="Battery charged at $BATVAL%, no shutdown."
-		[ ! -z "$VOERBOOS" ]&&[ "$VOERBOOS" -eq 1 ]&&echo "$MSG"||logger -p"info" -t"batman" "$MSG"||RETVAL=$(("$RETVAL"+$?))
+		[ ! -z "$VOERBOOS" ]&&[ "$VOERBOOS" -eq 1 ]&&echo "$MSG"||logger -p"info" -t"batman" "$MSG"
+		RETVAL=$((RETVAL+"$?"))
 	fi
 }
-function batarang {
+batarang() {
 	MSG="$BATVAL% ($BATSTATE)";echo "$MSG";
 }
 
 while getopts :vnp SHOPT;do
 	case "$SHOPT" in
-		v)VOERBOOS=1;export VOERBOOS;((OPTCNT++));;
-		p)batmobile;((OPTCNT++));;
-		""|n)batarang;((OPTCNT++));;
-		*)echo "Not supported option: -""${OPTARG}" >&2;RETVAL=$(($RETVAL+1)) >&2;WRONGOPT=1;((OPTCNT++));;
+		v)VOERBOOS=1;export VOERBOOS;OPTCNT=$((OPTCNT+1));;
+		p)batmobile;OPTCNT=$((OPTCNT+1));;
+		n)batarang;OPTCNT=$((OPTCNT+1));;
+		*)
+			echo "Not supported option: -""${OPTARG}" >&2
+			RETVAL=$((RETVAL+1));WRONGOPT=1 ;OPTCNT=$((OPTCNT+1))
+		;;
 	esac
 done
-shift $(( $OPTIND - 1 ))
+shift $((OPTIND-1))
 [ "$OPTCNT" -le 0 ]&&batarang
-[ ! -z "$WRONGOPT" ]&&[ "$WRONGOPT" -eq 1 ]&&exit 1||true
+[ ! -z "$WRONGOPT" ]&&[ "$WRONGOPT" -eq 1 ]&&exit 1;true
 exit "$RETVAL"
-- 
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