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#!/usr/bin/env lua5.4
local stdio = require('posix.stdio')
local poll = require('posix.poll')
function get_output(prog)
local f = assert(io.popen(prog))
local output = f:read('*a')
f:close()
return output
end
function volume()
local output = get_output('wpctl get-volume @DEFAULT_AUDIO_SINK@')
local muted = output:find('MUTED') ~= nil
local _, _, volume = output:find('^Volume: ([0-9.]+)')
volume = math.floor(volume * 100)
local symbol = 'ERROR'
if muted then
symbol = ' '
elseif volume == 0 then
symbol = ''
elseif volume <= 50 then
symbol = ''
else
symbol = ' '
end
return string.format('%s %d%%', symbol, volume)
end
function network()
local output = get_output('iwctl station wlan0 get-networks')
local _, _, ssid = output:find('>.- (.-) ')
return ssid and ' ' .. ssid or ' '
end
local current_brightness = 0
function brightness()
return ' ' .. current_brightness .. '%'
end
function battery()
local f = io.open('/sys/class/power_supply/BAT0/capacity', 'r')
local capacity = tonumber(f:read('*a'))
f:close()
f = io.open('/sys/class/power_supply/BAT0/status', 'r')
local status = f:read('*a')
f:close()
local symbol = 'ERROR'
local i = capacity > 0 and (capacity - 1) // 10 or 0
if status == 'Discharging\n' then
symbol = ({"", "", "", "", "", "", "", "", "", ""})[i] --
elseif status == 'Charging\n' then
symbol = ({"", "", "", "", "", "", "", "", "", ""})[i]
elseif status == 'Full\n' then
symbol = ""
end
return symbol .. ' ' .. capacity .. '%'
end
function clock()
return os.date(' %b %d %H:%M:%S')
end
local brightness_file = assert(io.popen('brightctl -l'))
while true do
if poll.rpoll(stdio.fileno(brightness_file), 1000) > 0 then
current_brightness = tonumber(brightness_file:read('l'))
end
io.write(string.format('all status %s | %s | %s | %s | %s\n',
volume(),
network(),
brightness(),
battery(),
clock()
))
end
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