CPU Information widget included.

Widget returns speed and cache information for all available
CPUs/cores. It stores cpu speed in mhz and ghz in a table as well as
cpu cache in kb and mb. Values are retrieved using the CPU ID, i.e. we
would retrieve speed in ghz for CPU or core 1 with this format string:
${1 ghz}.

cpuinf.lua

@@ -0,0 +1,48 @@
+----------------------------------------------------------
+-- Licensed under the GNU General Public License version 2
+--  * Copyright (C) 2009 Adrian C. <anrxc_sysphere_org>
+----------------------------------------------------------
+
+-- {{{ Grab environment
+local tonumber = tonumber
+local io = { open = io.open }
+local setmetatable = setmetatable
+-- }}}
+
+
+-- Cpuinf: provides speed and cache information for all available CPUs/cores
+module("vicious.cpuinf")
+
+
+-- {{{ CPU Information widget type
+function worker(format)
+    -- Initialise variables
+    cpu_id = nil
+
+    -- Get cpuinfo
+    local f = io.open("/proc/cpuinfo")
+    local cpu_info = {}
+
+    -- Get data
+    for line in f:lines() do
+        if line:match("^processor.*") then
+            cpu_id = line:match("([%d]+)")
+        elseif line:match("^cpu MHz.*") then
+            local cpu_speed = line:match("([%d]+)%.")
+            -- Store values
+            cpu_info["{"..cpu_id.." mhz}"] = cpu_speed
+            cpu_info["{"..cpu_id.." ghz}"] = tonumber(cpu_speed) / 1000
+        elseif line:match("^cache size.*") then
+            local cpu_cache = line:match("([%d]+)[%s]KB")
+            -- Store values
+            cpu_info["{"..cpu_id.." kb}"] = cpu_cache
+            cpu_info["{"..cpu_id.." mb}"] = tonumber(cpu_cache) / 1024
+        end
+    end
+    f:close()
+
+    return cpu_info
+end
+-- }}}
+
+setmetatable(_M, { __call = function(_, ...) return worker(...) end })