1 files changed, 59 insertions, 0 deletions
diff --git a/lain/widgets/mem.lua b/lain/widgets/mem.lua
new file mode 100644
index 0000000..46bb5f9
--- /dev/null
+++ b/lain/widgets/mem.lua
@@ -0,0 +1,59 @@
+
+--[[
+                                                  
+     Licensed under GNU General Public License v2 
+      * (c) 2013,      Luke Bonham                
+      * (c) 2010-2012, Peter Hofmann              
+                                                  
+--]]
+
+local newtimer        = require("lain.helpers").newtimer
+
+local wibox           = require("wibox")
+
+local io              = { lines  = io.lines }
+local math            = { floor  = math.floor }
+local string          = { gmatch = string.gmatch }
+
+local setmetatable    = setmetatable
+
+-- Memory usage (ignoring caches)
+-- lain.widgets.mem
+local mem = {}
+
+local function worker(args)
+    local args     = args or {}
+    local timeout  = args.timeout or 3
+    local settings = args.settings or function() end
+
+    mem.widget = wibox.widget.textbox('')
+
+    function update()
+        mem_now = {}
+        for line in io.lines("/proc/meminfo")
+        do
+            for k, v in string.gmatch(line, "([%a]+):[%s]+([%d]+).+")
+            do
+                if     k == "MemTotal"  then mem_now.total = math.floor(v / 1024)
+                elseif k == "MemFree"   then mem_now.free  = math.floor(v / 1024)
+                elseif k == "Buffers"   then mem_now.buf   = math.floor(v / 1024)
+                elseif k == "Cached"    then mem_now.cache = math.floor(v / 1024)
+                elseif k == "SwapTotal" then mem_now.swap  = math.floor(v / 1024)
+                elseif k == "SwapFree"  then mem_now.swapf = math.floor(v / 1024)
+                end
+            end
+        end
+
+        mem_now.used = mem_now.total - (mem_now.free + mem_now.buf + mem_now.cache)
+        mem_now.swapused = mem_now.swap - mem_now.swapf
+
+        widget = mem.widget
+        settings()
+    end
+
+    newtimer("mem", timeout, update)
+
+    return mem.widget
+end
+
+return setmetatable(mem, { __call = function(_, ...) return worker(...) end })