add fanspeed widget

widgets/fanspeed_freebsd.lua

@@ -0,0 +1,28 @@
+-- {{{ Grab environment
+local setmetatable = setmetatable
+local helpers = require("vicious.helpers")
+local tonumber = tonumber
+-- }}}
+
+
+-- fanspeed: provides speed level of main fan
+--
+-- expects one (1) full sysctl string to entry
+--   e.g.: "dev.acpi_ibm.0.fan_speed"
+
+local fanspeed_freebsd = {}
+
+local function worker(format, warg)
+    if not warg then return end
+
+    local fanspeed = helpers.sysctl(warg)
+
+    if not fanspeed then
+        -- use negative fanspeed to indicate error
+        return {-1}
+    else
+        return {tonumber(fanspeed)}
+    end
+end
+
+return setmetatable(fanspeed_freebsd, { __call = function(_, ...) return worker(...) end })