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