awesome: calculate cpu string dynamically

1 files changed, 19 insertions, 1 deletions

diff --git a/awesome/rc.lua b/awesome/rc.lua
index 178bbcb..72f421a 100644
--- a/awesome/rc.lua
+++ b/awesome/rc.lua
@@ -140,8 +140,26 @@ for bat = 0, 1 do
     end
 end
 
+function cpu_string()
+	local f = io.open("/proc/cpuinfo", "r")
+	local n = 2
+	local result = " CPU:$2%"
+	if f then
+		f:read() -- skip first line/processor
+		for line in f:lines() do
+			m = string.match(line, "processor\t*: %d+")
+			if m then
+				n = n + 1
+				result = result .. "/$" .. n	.. "%"
+			end
+		end
+		f:close()
+	end
+	return result .. " "
+end
+
 cpuwidget = widget({ type = 'textbox', name = 'cpuwidget', align = 'right' })
-vicious.register(cpuwidget, vicious.widgets.cpu, ' CPU:$2%/$3%/$4%/$5% ', 2)
+vicious.register(cpuwidget, vicious.widgets.cpu, cpu_string(), 2)
 
 -- Create a systray
 mysystray = widget({ type = "systray" })