port cpu widget to freebsd

widgets/cpu_freebsd.lua

@@ -0,0 +1,69 @@
+-- {{{ Grab environment
+local helpers = require("vicious.helpers")
+local tonumber = tonumber
+local setmetatable = setmetatable
+local math = { floor = math.floor }
+local string = { gmatch = string.gmatch }
+-- }}}
+
+
+-- Cpu: provides CPU usage for all available CPUs/cores
+-- vicious.widgets.cpu_freebsd
+local cpu_freebsd = {}
+
+-- Initialize function tables
+local cpu_total = {}
+local cpu_idle = {}
+
+-- {{{ CPU widget type
+local function worker(format)
+    local cp_times = helpers.sysctl("kern.cp_times")
+    local matches = {}
+    local tmp_total = {}
+    local tmp_idle = {}
+    local tmp_usage = {}
+
+    -- Read input data
+    for v in string.gmatch(cp_times, "([%d]+)") do
+        table.insert(matches, v)
+    end
+
+    -- Set first value of function tables
+    if #cpu_total == 0 then  -- check for empty table
+        for i = 1, #matches / 5 + 1 do
+            cpu_total[i] = 0
+            cpu_idle[i] = 0
+        end
+    end
+    for i = 1, #matches / 5 + 1 do
+        tmp_total[i] = 0
+        tmp_idle[i] = 0
+        tmp_usage[i] = 0
+    end
+
+    -- CPU usage 
+    for i, v in ipairs(matches) do
+        local index = math.floor((i-1) / 5) + 2 -- current cpu
+
+        tmp_total[1] = tmp_total[1] + v
+        tmp_total[index] = tmp_total[index] + v
+
+        if (i-1) % 5 == 4 then
+            tmp_idle[1] = tmp_idle[1] + v
+            tmp_idle[index] = tmp_idle[index] + v
+        end
+    end
+
+    for i = 1, #tmp_usage do
+        tmp_usage[i] = tmp_total[i] - cpu_total[i]
+        tmp_usage[i] = math.floor((tmp_usage[i] - (tmp_idle[i] - cpu_idle[i])) / tmp_usage[i] * 100)
+    end
+
+    cpu_total = tmp_total
+    cpu_idle = tmp_idle
+
+    return tmp_usage
+end
+-- }}}
+
+return setmetatable(cpu_freebsd, { __call = function(_, ...) return worker(...) end })

widgets/cpu_linux.lua

@@ -20,7 +20,7 @@ local string = {
 
 -- Cpu: provides CPU usage for all available CPUs/cores
 -- vicious.widgets.cpu
-local cpu = {}
+local cpu_linux = {}
 
 
 -- Initialize function tables
@@ -77,4 +77,4 @@ local function worker(format)
 end
 -- }}}
 
-return setmetatable(cpu, { __call = function(_, ...) return worker(...) end })
+return setmetatable(cpu_linux, { __call = function(_, ...) return worker(...) end })