T430/dwm_status_Bar at master · ncmd/T430 · GitHub

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#!/bin/sh

# dwmbar -- Status bar for dwm using xsetroot

DWM_BATT_HLDL=1 # "Hold Light", declares variable for keeping battery warning light on until 75% charged

while true; do
# Time
DWM_TIME="$( date '+%a %F %T')"; # YYYY-MM-DD HH:MM:SS

# Volume
printf -v DWM_VOLUME %3d%% "$(amixer get Master | tail -1 | awk '{ print $5 }' | tr -d '[%]')"; # Volume level, three digits
if [ "$(amixer get Master | tail -1 | awk '{ print $6 }' | tr -d '[]')" == "off" ]; then # Check if sound is muted
	DWM_VOLUME="MUTE"; # Display "MUTE" instead of volume
fi;

# Power status
# AC light
if [ "$( cat /sys/class/power_supply/AC/online)" -eq "1" ]; then # Check if AC adapter plugged in
	DWM_ACLT="AC"; # set "AC Light" on
else
	DWM_ACLT="  "; # set "AC Light" off
fi;

# Charge level
if [ -e /sys/class/power_supply/BAT0 ]; then # Check if battery connected
	DWM_CHARGE="$(acpi | awk '{ print $4 }' | tr -d ',%')"; # Declare variable with the current battery charge
	printf -v DWM_BATTERY %3d%% "$DWM_CHARGE"; # Declare another variable, adds "%" to the end of the charge
else
	DWM_BATTERY="----" # "Null" reading for when battery is not present
fi;

# Charge time
DWM_BATT_TIME="$(acpi | awk '{ print $5 }')" # Sets variable to current time till depletion/charge
if [ "$DWM_BATT_TIME" == "discharging" ]; then # A weird glitch causes DWM_BATT_TIME to sometimes get "charging" or "discharging" when
	DWM_BATT_TIME="dschrgng";	       # removing/connecting AC adapter. "charging" is useful size, "discharging" is too long.
fi;
if [ "$DWM_BATT_TIME" == "" ]; then # If battery is fully charged, DWM_BATT_TIME doesn't get anything.
	DWM_BATT_TIME="battfull"; #putting something there.
fi;

# Battery status
if [ -e /sys/class/power_supply/BAT0 ]; then # Check if battery present
	if [ "$DWM_CHARGE" -le "40" ]; then # if battery drops below 40%
		DWM_BATT_HLDL="1"; # "Hold light" on
		# Warning light flasher
		if [ "$DWM_BATT_SWTC" -eq "0" ]; then # Check if "Warning Light Switch" is off
			DWM_BATT_LGHT="   $DWM_BATT_TIME   "; # Warning light off, display charge time
			if [ "$DWM_CHARGE" -le "10" ]; then # Check if battery drops below 10%
				DWM_BATTERY="!!!!"; # Warning flasher for charge display
			fi;
			DWM_BATT_SWTC="1" # Turn light switch on
		else
			DWM_BATT_LGHT="CHARGE BATTERY"; # Warning light on
			DWM_BATT_SWTC="0" # Turn light switch off
		fi;
	else
		if [ "$DWM_BATT_HLDL" -eq "1" ]; then # If Hold Light switch is on (battery had dropped below 40%)
			if [ "$DWM_CHARGE" -ge "75" ]; then # Check if battery has reached 75%
				DWM_BATT_HLDL="0" # Turn Hold Light off
				DWM_BATT_LGHT="   $DWM_BATT_TIME   "; # Warning light off, display charge time
			else
				DWM_BATT_HLDL="1" # Keep Hold Light on
				# Warning light flasher
				if [ "$DWM_BATT_SWTC" -eq "0" ]; then # Check if light is off
					DWM_BATT_LGHT="   $DWM_BATT_TIME   "; # Warning light off, display charge time
					DWM_BATT_SWTC="1" # Turn light switch on
				else
					DWM_BATT_LGHT="CHARGE BATTERY"; # Warning light on
					DWM_BATT_SWTC="0" # Turn light switch off
				fi;
			fi;
		else
			DWM_BATT_LGHT="   $DWM_BATT_TIME   "; # Display charge time
		fi;
	fi;
else
	DWM_BATT_LGHT="  No Battery  "; # Display "No Battery" light
fi;


# Status
# | AC |CHARGE BATTERY|  Pwr:  32%  |  Vol: 100%  |  2014-08-16 21:16:34
DWM_STATUS="| $DWM_ACLT |$DWM_BATT_LGHT|  Pwr: $DWM_BATTERY  |  Vol: $DWM_VOLUME  |  $DWM_TIME ";
xsetroot -name "$DWM_STATUS";
sleep 1s;
done &