archlinux_conf/etc/ion3/statusd_laptopstatus.lua

   1 -- statusd_laptopstatus.lua v0.0.2 (last modified 2005-06-13)
   2 --
   3 -- Copyright (C) 2005 Jari Eskelinen <jari.eskelinen@iki.fi>
   4 --      modified by RenÃ© van Bevern <rvb@pro-linux.de> for error handling
   5 --
   6 -- Permission to copy, redistirbute, modify etc. is granted under the terms
   7 -- of GNU GENERAL PUBLIC LICENSE Version 2.
   8 --
   9 -- This is script for displaying some interesting information about your
  10 -- laptops power saving in Ion's status monitor. Script is very Linux
  11 -- specific (uses /proc interface) and needs ACPI -support new enough (don't
  12 -- know exactly but 2.6.x kernels should be fine). Also if you have some
  13 -- kind of exotic hardware (multiple processors, multiple batteries etc.)
  14 -- this script probably will fail or show incorrect information.
  15 --
  16 -- Just throw this script under ~/.ion3 and add following keywords to your
  17 -- cfg_statusbar.lua's template-line with your own taste:
  18 --
  19 -- %laptopstatus_cpuspeed
  20 -- %laptopstatus_temperature
  21 -- %laptopstatus_batterypercent
  22 -- %laptopstatus_batterytimeleft
  23 -- %laptopstatus_batterydrain
  24 --
  25 -- Template example: template="[ %date || load:% %>load || CPU: %laptopstatus_cpuspeed %laptopstatus_temperature || BATT: %laptopstatus_batterypercent %laptopstatus_batterytimeleft %laptopstatus_batterydrain ]"
  26 --
  27 -- You can also run this script with lua interpreter and see if you get
  28 -- right values.
  29 --
  30 -- NOTICE: This is my first ion/lua-script, so probably this can be done better.
  31 -- Feel free to improve this script.
  32 --
  33 -- TODO: * Is it stupid to use file:read("*all"), can this cause infinite
  34 --         loops in some weird situations?
  35 --       * Do not poll for information not defined in template to be used
  36 --       * Auto-detect right acpi devices instead of hardcoded BATT0 etc.
  37
  38 --
  39 -- SETTINGS
  40 --
  41
  42 if not statusd_laptopstatus then
  43   statusd_laptopstatus = {
  44     interval = 10,                    -- Polling interval in seconds
  45     temperature_important = 66,       -- Temperature which will cause important hint
  46     temperature_critical = 71,        -- Temperature which will cause critical hint
  47     batterypercent_important = 10,    -- Battery percent which will cause important hint
  48     batterypercent_critical = 5,      -- Battery percent which will cause critical hint
  49     batterytimeleft_important = 600,  -- Battery time left (in secs) which will cause important hint
  50     batterytimeleft_critical = 300,   -- Battery time left (in secs) which will cause critical hint
  51     ac_state = {"/proc/acpi/ac_adapter/AC/state",
  52                 "/proc/acpi/ac_adapter/ACAD/state",
  53                 "/proc/acpi/ac_adapter/ADP0/state",
  54                 "/proc/acpi/ac_adapter/ADP1/state"},
  55     temp_info = {"/proc/acpi/thermal_zone/THRM/temperature",
  56                  "/proc/acpi/thermal_zone/THM/temperature",
  57                  "/proc/acpi/thermal_zone/THM0/temperature",
  58                  "/proc/acpi/thermal_zone/THM1/temperature"},
  59     bat_info = {"/proc/acpi/battery/BAT0/info",
  60                 "/proc/acpi/battery/BAT1/info"},
  61     bat_state = {"/proc/acpi/battery/BAT0/state",
  62                  "/proc/acpi/battery/BAT1/state"}
  63   }
  64 end
  65
  66 if statusd == nil then
  67         return
  68 end
  69 statusd_laptopstatus=table.join(statusd.get_config("laptopstatus"), statusd_laptopstatus)
  70
  71 --
  72 -- CODE
  73 --
  74 local laptopstatus_timer
  75
  76 function try_open(files, mode)
  77   for _, file in pairs(files) do
  78     local fd = io.open(file, mode)
  79     if fd then return fd, file end
  80   end
  81 end
  82
  83 local function get_cpu()
  84   local mhz, hint
  85   if pcall(function ()
  86        local status
  87        local file = io.open("/proc/cpuinfo", "r")
  88        status, _, mhz = string.find(file:read("*all"),
  89                                     "cpu MHz%s+: (%d+)")
  90        if not status then error("could not get MHz") end
  91        file:close()
  92      end)
  93      then return {speed=string.format("%4dMHz", math.ceil(mhz/5)*5),
  94                   hint=hint}
  95      else return {speed="n/a", hint=hint} end
  96 end
  97
  98
  99 local function get_ac()
 100   local file = try_open(statusd_laptopstatus.ac_state, "r")
 101   if not string.find(file:read("*all"), "state:%s+on.line") then return 0
 102   else return 1 end
 103   file:close()
 104 end
 105
 106
 107 local function get_thermal()
 108   local temp, hint = nil, "normal"
 109
 110   if pcall(function ()
 111        local status
 112        local file=try_open(statusd_laptopstatus.temp_info, "r")
 113        status, _, temp = string.find(file:read("*all"),
 114                                      "temperature:%s+(%d+).*")
 115        if not status then error("could not get temperature") end
 116        temp = tonumber(temp)
 117        file:close();
 118      end)
 119      then if temp >= statusd_laptopstatus.temperature_important then
 120              hint = "important" end
 121           if temp >= statusd_laptopstatus.temperature_critical then
 122              hint = "critical" end
 123           return {temperature=string.format("%02dC", temp), hint=hint}
 124      else return {temperature="n/a", hint = "hint"} end
 125 end
 126
 127
 128 local function get_battery()
 129   local percenthint = "normal"
 130   local timelefthint = "normal"
 131   local lastfull, rate, rateunit, remaining
 132
 133   if pcall(function ()
 134        local status
 135        local file=try_open(statusd_laptopstatus.bat_info, "r")
 136        local infocontents = file:read("*all")
 137        file:close();
 138
 139        local file=try_open(statusd_laptopstatus.bat_state, "r")
 140        local statecontents = file:read("*all")
 141        file:close();
 142
 143        status, _, lastfull = string.find(infocontents, "last full capacity:%s+(%d+).*")
 144        if not status then error("could not get full battery capacity") end
 145        lastfull = tonumber(lastfull)
 146        if string.find(statecontents, "present rate:%s+unknown.*") then
 147            rate = -1
 148        else
 149            status, _, rate, rateunit = string.find(statecontents, "present rate:%s+(%d+)(.*)")
 150            if not status then error("could not get battery draining-rate") end
 151            rate = tonumber(rate)
 152        end
 153        status, _, remaining = string.find(statecontents, "remaining capacity:%s+(%d+).*")
 154        if not status then error("could not get remaining capacity") end
 155        remaining = tonumber(remaining)
 156      end) then
 157        local percent = math.floor(remaining / lastfull * 100 + 5/10)
 158        local timeleft
 159        local hours, secs, mins
 160        if get_ac() == 1 then
 161            timeleft = " AC"
 162        elseif rate <= 0 then
 163            timeleft = "n/a"
 164        else
 165           secs = 3600 * (remaining / rate)
 166           mins = secs / 60
 167           hours = math.floor(mins / 60)
 168           mins = math.floor(mins - (hours * 60))
 169           timeleft = string.format("%02d:%02d", hours, mins)
 170        end
 171
 172        if secs ~= nil and secs <= statusd_laptopstatus.batterytimeleft_important then timelefthint = "important" end
 173        if secs ~= nil and secs <= statusd_laptopstatus.batterytimeleft_critical then timelefthint = "critical" end
 174        if percent <= statusd_laptopstatus.batterypercent_important then percenthint = "important" end
 175        if percent <= statusd_laptopstatus.batterypercent_critical then percenthint = "critical" end
 176
 177        return { percent=string.format("%02d%%", percent), timeleft=timeleft, drain=tostring(rate)..rateunit, percenthint=percenthint, timelefthint=timelefthint}
 178   else return { percent="n/a", timeleft="n/a", drain="n/a", percenthint=percenthint, timelefthint=timelefthint} end
 179 end
 180
 181 local last_timeleft = nil
 182
 183 local function update_laptopstatus ()
 184   cpu = get_cpu()
 185   thermal = get_thermal()
 186   battery = get_battery()
 187
 188   -- Informing statusd OR printing to stdout if statusd not present
 189   if statusd ~= nil then
 190     statusd.inform("laptopstatus_cpuspeed", cpu.speed)
 191     statusd.inform("laptopstatus_cpuspeed_template", "xxxxMHz")
 192     statusd.inform("laptopstatus_cpuspeed_hint", cpu.hint)
 193     statusd.inform("laptopstatus_temperature", thermal.temperature)
 194     statusd.inform("laptopstatus_temperature_template", "xxxC")
 195     statusd.inform("laptopstatus_temperature_hint", thermal.hint)
 196     statusd.inform("laptopstatus_batterypercent", battery.percent)
 197     statusd.inform("laptopstatus_batterypercent_template", "xxx%")
 198     statusd.inform("laptopstatus_batterypercent_hint", battery.percenthint)
 199     if battery.timeleft ~= "n/a" or last_timeleft == " AC" then
 200         statusd.inform("laptopstatus_batterytimeleft", battery.timeleft)
 201         last_timeleft = battery.timeleft
 202     end
 203     statusd.inform("laptopstatus_batterytimeleft_template", "hh:mm")
 204     statusd.inform("laptopstatus_batterytimeleft_hint", battery.timelefthint)
 205     statusd.inform("laptopstatus_batterydrain", battery.drain)
 206     laptopstatus_timer:set(statusd_laptopstatus.interval*1000, update_laptopstatus)
 207   else
 208     io.stdout:write("CPU: "..cpu.speed.." "..thermal.temperature.." || BATT: "..battery.percent.." "..battery.timeleft.."\n")
 209     laptopstatus_timer:set(statusd_laptopstatus.interval*2*1000, update_laptopstatus)
 210   end
 211 end
 212
 213
 214 if statusd ~= nil then
 215     laptopstatus_timer = statusd.create_timer()
 216 end
 217 update_laptopstatus()