cpufreq: widget rewritten, governor symbols enabled

cpufreq.lua

@@ -5,12 +5,9 @@
 
 -- {{{ Grab environment
 local tonumber = tonumber
-local io = { open = io.open }
 local setmetatable = setmetatable
-local string = {
-    find = string.find,
-    match = string.match
-}
+local string = { match = string.match }
+local helpers = require("vicious.helpers")
 -- }}}
 
 
@@ -20,50 +17,39 @@ module("vicious.cpufreq")
 
 -- {{{ CPU frequency widget type
 local function worker(format, cpuid)
-    --local governor_state = {
-    --    ["ondemand"] = "↯",
-    --    ["powersave"] = "⌁",
-    --    ["userspace"] = "°",
-    --    ["performance"] = "⚡",
-    --    ["conservative"] = "↯"
-    --}
+    local cpufreq = setmetatable(
+        { _path = "/sys/devices/system/cpu/"..cpuid.."/cpufreq"},
+        helpers.pathtotable
+    )
 
+    local governor_state = {
+       ["ondemand\n"] = "↯",
+       ["powersave\n"] = "⌁",
+       ["userspace\n"] = "@",
+       ["performance\n"] = "⚡",
+       ["conservative\n"] = "↯"
+    }
     -- Default voltage values
     local voltage = { v  = "N/A", mv = "N/A" }
 
 
     -- Get the current frequency
-    local f = io.open("/sys/devices/system/cpu/"..cpuid.."/cpufreq/scaling_cur_freq")
-    local freq = f:read("*line")
-    f:close()
-
+    local freq = tonumber(cpufreq.scaling_cur_freq)
     -- Calculate MHz and GHz
     local freqmhz = freq / 1000
     local freqghz = freqmhz / 1000
 
-
     -- Get the current voltage
-    local f = io.open("/sys/devices/system/cpu/"..cpuid.."/cpufreq/scaling_voltages")
-    if f then for line in f:lines() do
-        if string.find(line, "^"..freq) then
-            voltage.mv = tonumber(string.match(line, "[%d]+[%s]([%d]+)"))
-            break
-        end
-      end
-      f:close()
-
-      -- Calculate voltage from mV
-      voltage.v = voltage.mv / 1000
+    if cpufreq.scaling_voltages then
+        voltage.mv = tonumber(string.match(cpufreq.scaling_voltages, freq.."[%s]([%d]+)"))
+        -- Calculate voltage from mV
+        voltage.v = voltage.mv / 1000
     end
 
-
     -- Get the current governor
-    local f = io.open("/sys/devices/system/cpu/"..cpuid.."/cpufreq/scaling_governor")
-    local governor = f:read("*line")
-    f:close()
-
+    local governor = cpufreq.scaling_governor
     -- Represent the governor as a symbol
-    --local governor = governor_state[governor] or governor
+    governor = governor_state[governor] or governor
 
     return {freqmhz, freqghz, voltage.mv, voltage.v, governor}
 end