--[[
-
- Licensed under GNU General Public License v2
- * (c) 2013, Luke Bonham
- * (c) 2010, Adrian C. <anrxc@sysphere.org>
-
+
+ Licensed under GNU General Public License v2
+ * (c) 2013, Luke Bonham
+ * (c) 2010, Adrian C. <anrxc@sysphere.org>
+
--]]
local newtimer = require("lain.helpers").newtimer
+local read_pipe = require("lain.helpers").read_pipe
local wibox = require("wibox")
-local io = { popen = io.popen }
-local string = { match = string.match }
+local string = { match = string.match,
+ format = string.format }
local setmetatable = setmetatable
local function worker(args)
local args = args or {}
local timeout = args.timeout or 5
- local channel = args.channel or "Master"
local settings = args.settings or function() end
- widget = wibox.widget.textbox('')
+ alsa.cmd = args.cmd or "amixer"
+ alsa.channel = args.channel or "Master"
- function update()
- local f = io.popen('amixer get ' .. channel)
- local mixer = f:read("*all")
- f:close()
+ alsa.widget = wibox.widget.textbox('')
- volume = {}
+ function alsa.update()
+ local mixer = read_pipe(string.format("%s get %s", alsa.cmd, alsa.channel))
- volume.level, volume.status = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
+ volume_now = {}
- if volume.level == nil
+ volume_now.level, volume_now.status = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
+
+ if volume_now.level == nil
then
- volume.level = 0
- volume.status = "off"
+ volume_now.level = "0"
+ volume_now.status = "off"
end
- if volume.status == ""
+ if volume_now.status == ""
then
- if volume.level == 0
+ if volume_now.level == "0"
then
- volume.status = "off"
+ volume_now.status = "off"
else
- volume.status = "on"
+ volume_now.status = "on"
end
end
+ widget = alsa.widget
settings()
end
- newtimer("alsa", timeout, update)
+ timer_id = string.format("alsa-%s-%s", alsa.cmd, alsa.channel)
- output = { widget = widget, notify = update }
+ newtimer(timer_id, timeout, alsa.update)
- return setmetatable(output, { __index = output.widget })
+ return setmetatable(alsa, { __index = alsa.widget })
end
return setmetatable(alsa, { __call = function(_, ...) return worker(...) end })