Cleanup widgets that use pathtotable helper

bat.lua

@@ -21,11 +21,7 @@ module("vicious.bat")
 
 -- {{{ Battery widget type
 local function worker(format, batid)
-    local battery = setmetatable(
+    local battery = helpers.pathtotable("/sys/class/power_supply/" .. batid)
-        { _path = "/sys/class/power_supply/" .. batid },
-        helpers.pathtotable
-    )
-
     local battery_state = {
         ["Full\n"] = "↯",
         ["Unknown\n"] = "⌁",

cpufreq.lua

@@ -17,11 +17,7 @@ module("vicious.cpufreq")
 
 -- {{{ CPU frequency widget type
 local function worker(format, cpuid)
-    local cpufreq = setmetatable(
+    local cpufreq = helpers.pathtotable("/sys/devices/system/cpu/"..cpuid.."/cpufreq")
-        { _path = "/sys/devices/system/cpu/"..cpuid.."/cpufreq"},
-        helpers.pathtotable
-    )
-
     local governor_state = {
        ["ondemand\n"] = "↯",
        ["powersave\n"] = "⌁",

dio.lua

@@ -27,10 +27,7 @@ local disk_total = {}
 -- {{{ Disk I/O widget type
 local function worker(format, disk)
     local disk_lines = {}
-    local disk_stats = setmetatable(
+    local disk_stats = helpers.pathtotable("/sys/block/" .. disk)
-        { _path = "/sys/block/" .. disk },
-        helpers.pathtotable
-    )
 
     if disk_stats.stat then
         local match = string.gmatch(disk_stats.stat, "[%s]+([%d]+)")

entropy.lua

@@ -17,10 +17,7 @@ module("vicious.entropy")
 
 -- {{{ Entropy widget type
 local function worker(format)
-    local random = setmetatable(
+    local random = helpers.pathtotable("/proc/sys/kernel/random")
-        { _path = "/proc/sys/kernel/random"},
-        helpers.pathtotable
-    )
 
     -- Linux 2.6 has a default entropy pool of 4096-bits
     local poolsize = tonumber(random.poolsize)

thermal.lua

@@ -15,10 +15,7 @@ module("vicious.thermal")
 
 -- {{{ Thermal widget type
 local function worker(format, thermal_zone)
-    local thermal = setmetatable(
+    local thermal = helpers.pathtotable("/sys/class/thermal/"..thermal_zone)
-        { _path = "/sys/class/thermal/" .. thermal_zone },
-        helpers.pathtotable
-    )
 
     -- Get ACPI thermal zone
     if thermal.temp then

uptime.lua

@@ -18,10 +18,7 @@ module("vicious.uptime")
 
 -- {{{ Uptime widget type
 local function worker(format)
-    local proc = setmetatable(
+    local proc = helpers.pathtotable("/proc")
-        { _path = "/proc" },
-        helpers.pathtotable
-    )
 
     -- Get system uptime
     local up_t = math.floor(string.match(proc.uptime, "[%d]+"))