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---------------------------------------------------
-- Licensed under the GNU General Public License v2
-- * (c) 2010, Adrian C. <anrxc@sysphere.org>
---------------------------------------------------
-- {{{ Grab environment
local tonumber = tonumber
local io = { open = io.open }
local setmetatable = setmetatable
local math = {
min = math.min,
floor = math.floor
}
local string = {
find = string.find,
match = string.match,
format = string.format
}
-- }}}
-- Batpmu: provides state, charge and remaining time for a requested battery using PMU
-- vicious.contrib.batpmu
local batpmu = {}
-- {{{ Battery widget type
local function worker(format, batid)
local battery_state = {
["full"] = "↯",
["unknown"] = "⌁",
["00000013"] = "+",
["00000011"] = "-"
}
-- Get /proc/pmu/battery* state
local f = io.open("/proc/pmu/" .. batid)
-- Handler for incompetent users
if not f then return {battery_state["unknown"], 0, "N/A"} end
local statefile = f:read("*all")
f:close()
-- Get /proc/pmu/info data
local f = io.open("/proc/pmu/info")
local infofile = f:read("*all")
f:close()
-- Check if the battery is present
if infofile == nil or string.find(infofile, "Battery count[%s]+:[%s]0") then
return {battery_state["unknown"], 0, "N/A"}
end
-- Get capacity and charge information
local capacity = string.match(statefile, "max_charge[%s]+:[%s]([%d]+).*")
local remaining = string.match(statefile, "charge[%s]+:[%s]([%d]+).*")
-- Calculate percentage
local percent = math.min(math.floor(remaining / capacity * 100), 100)
-- Get timer information
local timer = string.match(statefile, "time rem%.[%s]+:[%s]([%d]+).*")
if timer == "0" then return {battery_state["full"], percent, "N/A"} end
-- Get state information
local state = string.match(statefile, "flags[%s]+:[%s]([%d]+).*")
local state = battery_state[state] or battery_state["unknown"]
-- Calculate remaining (charging or discharging) time
local hoursleft = math.floor(tonumber(timer) / 3600)
local minutesleft = math.floor((tonumber(timer) / 60) % 60)
local time = string.format("%02d:%02d", hoursleft, minutesleft)
return {state, percent, time}
end
-- }}}
return setmetatable(batpmu, { __call = function(_, ...) return worker(...) end })
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