Initial commit

lib/lain/widget/mem.lua

@@ -0,0 +1,58 @@
+--[[
+
+     Licensed under GNU General Public License v2
+      * (c) 2013,      Luca CPZ
+      * (c) 2010-2012, Peter Hofmann
+
+--]]
+
+local helpers = require('lain.helpers')
+local wibox = require('wibox')
+local gmatch, lines, floor = string.gmatch, io.lines, math.floor
+
+-- Memory usage (ignoring caches)
+-- lain.widget.mem
+
+local function factory(args)
+	args = args or {}
+
+	local mem = { widget = args.widget or wibox.widget.textbox() }
+	local timeout = args.timeout or 2
+	local settings = args.settings or function() end
+
+	function mem.update()
+		mem_now = {}
+		for line in lines('/proc/meminfo') do
+			for k, v in gmatch(line, '([%a]+):[%s]+([%d]+).+') do
+				if k == 'MemTotal' then
+					mem_now.total = floor(v / 1024 + 0.5)
+				elseif k == 'MemFree' then
+					mem_now.free = floor(v / 1024 + 0.5)
+				elseif k == 'Buffers' then
+					mem_now.buf = floor(v / 1024 + 0.5)
+				elseif k == 'Cached' then
+					mem_now.cache = floor(v / 1024 + 0.5)
+				elseif k == 'SwapTotal' then
+					mem_now.swap = floor(v / 1024 + 0.5)
+				elseif k == 'SwapFree' then
+					mem_now.swapf = floor(v / 1024 + 0.5)
+				elseif k == 'SReclaimable' then
+					mem_now.srec = floor(v / 1024 + 0.5)
+				end
+			end
+		end
+
+		mem_now.used = mem_now.total - mem_now.free - mem_now.buf - mem_now.cache - mem_now.srec
+		mem_now.swapused = mem_now.swap - mem_now.swapf
+		mem_now.perc = math.floor(mem_now.used / mem_now.total * 100)
+
+		widget = mem.widget
+		settings()
+	end
+
+	helpers.newtimer('mem', timeout, mem.update)
+
+	return mem
+end
+
+return factory