Migrate to rcm

notion/statusd_battery.lua

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+-- A battery statusbar meter for the ion3 window manager for Apple Powerbooks
+-- running Linux. These machines do not use APM or ACPI but have a PMU, Power
+-- Management Unit.
+--
+-- Install the meter in ~/.ion3/statusd_battery.lua
+--
+-- Edit your ~/.ion3/cfg_statusbar.lua to add this meter:
+--   template="%date - %battery %filler%systray",
+--
+-- When the battery is charged and you're on AC power, you don't see anything.
+-- When the system is on AC power and charging the battery, you'll see a tilde
+-- sign, ~, followed by the percentage that the battery is charged.  When the
+-- system is running on battery power, you'll an equal, =, sign, followed by
+-- the remaining capacity in percentages.
+--
+-- See /usr/src/linux/include/battery.h and
+-- /usr/src/linux/drivers/macintosh/via-battery.c for some documentation on the
+-- exported data.
+--
+-- Author: Jeroen Pulles
+-- Rotterdam, 15 november 2007
+
+
+local battery_base_settings = {
+  update_interval = 10*1000, -- every 15 sec
+  important_threshold = 33 , -- 33% cap. remaining
+  critical_threshold = 20, -- 15% capacity remaining
+}
+
+local battery_settings = battery_base_settings
+
+local battery_timer
+
+
+-- Read the battery battery info
+local function read_battery_data ()
+  local f = assert(io.popen("upower -i /org/freedesktop/UPower/devices/battery_BAT0"))
+  local data = f:read("*all")
+  f:close()
+
+  local _, _, capacity = string.find(data, "percentage:%s*(%d+)")
+  local _, _, remaining = string.find(data, "time to %w+:%s*(%d+\.?%d*%s*%w*)")
+  local _, _, status = string.find(data, "state:%s*(%w+)")
+
+  return status, tonumber(capacity), remaining
+end
+
+-- Write the current state to the statusbar:
+local function inform_battery ()
+
+  local status, cap, remaining = read_battery_data()
+
+  if status == 'Discharging' then
+    -- On battery power, percentage remaining:
+    statusd.inform("battery", string.format("BAT %d%%", cap))
+  else
+    -- Charging the battery on AC power, percentage charged:
+    statusd.inform("battery", string.format("AC %d%%", cap))
+  end
+
+  if cap <= battery_settings.critical_threshold then
+    statusd.inform("battery_hint", "critical")
+  elseif cap <= battery_settings.important_threshold then
+    statusd.inform("battery_hint", "important")
+  else
+    statusd.inform("battery_hint", "normal")
+  end
+
+  statusd.inform("battery_remaining", remaining)
+end
+
+
+-- Statusbar update loop:
+local function update_battery ()
+  inform_battery()
+  battery_timer:set(battery_settings.update_interval, update_battery)
+end
+
+
+-- Run the script:
+if statusd then
+  -- we're a statusbar plugin:
+  battery_settings = table.join(statusd.get_config("battery"), battery_base_settings)
+  battery_timer = statusd.create_timer()
+  update_battery()
+end
+
+-- vim: set ts=4 sw=4 expandtab