76 lines
2.4 KiB
Lua
76 lines
2.4 KiB
Lua
-- {{{ Grab environment
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local setmetatable = setmetatable
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local tonumber = tonumber
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local io = { popen = io.popen }
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local math = { floor = math.floor }
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local helpers = require("vicious.helpers")
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local string = {
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gmatch = string.gmatch,
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match = string.match,
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format = string.format
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}
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-- }}}
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local bat_freebsd = {}
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local function worker(format, warg)
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local battery = warg or "batt"
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local bat_info = {}
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local f = io.popen("acpiconf -i " .. helpers.shellquote(battery))
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for line in f:lines("*line") do
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for key,value in string.gmatch(line, "(.+):%s+(.+)") do
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bat_info[key] = value
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end
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end
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-- current state
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-- see: https://github.com/freebsd/freebsd/blob/master/usr.sbin/acpi/acpiconf/acpiconf.c
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local state
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if bat_info["State"] == "high" then
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state = "↯"
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elseif bat_info["State"] == "charging" then
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state = "+"
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elseif bat_info["State"] == "critical charging" then
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state = "+"
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elseif bat_info["State"] == "discharging" then
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state = "-"
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elseif bat_info["State"] == "critical discharging" then
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state = "!"
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elseif bat_info["State"] == "critical" then
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state = "!"
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else
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state = "N/A"
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end
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-- battery capacity in percent
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local percent = tonumber(string.match(bat_info["Remaining capacity"], "[%d]+"))
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-- use remaining (charging or discharging) time calculated by acpiconf
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local time = bat_info["Remaining time"]
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if time == "unknown" then
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time = "∞"
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end
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-- calculate wear level from (last full / design) capacity
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local wear = "N/A"
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if bat_info["Last full capacity"] and bat_info["Design capacity"] then
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local l_full = tonumber(string.match(bat_info["Last full capacity"], "[%d]+"))
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local design = tonumber(string.match(bat_info["Design capacity"], "[%d]+"))
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wear = math.floor(l_full / design * 100)
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end
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-- dis-/charging rate as presented by battery
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local rate = string.match(bat_info["Present rate"], "([%d]+)%smW")
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rate = string.format("%2.1f", tonumber(rate / 1000))
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-- returns
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-- * state (high "↯", discharging "-", charging "+", N/A "⌁" }
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-- * remaining_capacity (percent)
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-- * remaining_time, by battery
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-- * wear level (percent)
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-- * present_rate (mW)
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return {state, percent, time, wear, rate}
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end
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return setmetatable(bat_freebsd, { __call = function(_, ...) return worker(...) end })
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