1 files changed, 44 insertions, 0 deletions
diff --git a/bin/batmon b/bin/batmon
new file mode 100755
index 0000000..fec22b7
--- /dev/null
+++ b/bin/batmon
@@ -0,0 +1,44 @@
+#!/bin/sh
+
+bat()
+{
+	eval "$(cat /sys/class/power_supply/BAT0/uevent | grep -E \
+		'^POWER_SUPPLY_(STATUS|ENERGY_)')"
+	percentage=$(printf 'scale = 0; %d * 100 / %d;\n' \
+		${POWER_SUPPLY_ENERGY_NOW} ${POWER_SUPPLY_ENERGY_FULL} | bc)
+	case "${POWER_SUPPLY_STATUS}" in
+		'Unknown')
+			status='？'
+			;;
+		'Charging')
+			status='⚡'
+			;;
+		'Discharging')
+			status='🔋'
+			;;
+		'Not charging')
+			status='！'
+			;;
+		'Full')
+			status='🔌'
+			;;
+	esac
+	printf '%s%3d%%\n' "${status}" ${percentage}
+}
+
+ac()
+{
+	status='🔌'
+	printf '%s\n' "${status}"
+}
+
+main()
+{
+	if [ -e /sys/class/power_supply/BAT0/uevent ]; then
+		bat
+	else
+		ac
+	fi
+}
+
+main "${@}"