[hddtemp_linux] Deprecate io.popen

Changes.md

@@ -18,7 +18,7 @@ Added:
 Fixed:
 
 - Deprecate the use of `io.popen` in following widgets:
-    * wifi_linux, wifiiw_linux, hwmontemp_linux
+    * wifi_linux, wifiiw_linux, hwmontemp_linux, hddtemp_linux
     * bat_freebsd, mem_freebsd, net_freebsd
     * volume, gmail, mdir, mpd, fs
 - [mpd] Lua 5.3 compatibility (for real this time); also correct a typo

widgets/hddtemp_linux.lua

@@ -5,36 +5,24 @@
 
 -- {{{ Grab environment
 local tonumber = tonumber
-local io = { popen = io.popen }
-local setmetatable = setmetatable
-local string = { gmatch = string.gmatch }
-local helpers = require("vicious.helpers")
+
+local helpers = require"vicious.helpers"
+local spawn = require"vicious.spawn"
 -- }}}
 
 
 -- Hddtemp: provides hard drive temperatures using the hddtemp daemon
 -- vicious.widgets.hddtemp
-local hddtemp_linux = {}
-
-
--- {{{ HDD Temperature widget type
-local function worker(format, warg)
-    -- Fallback to default hddtemp port
-    if warg == nil then warg = 7634 end
-
-    local hdd_temp = {} -- Get info from the hddtemp daemon
-    local quoted = helpers.shellquote(warg)
-    local f = io.popen("echo | curl --connect-timeout 1 -fsm 3 telnet://127.0.0.1:"..quoted)
-
-    for line in f:lines() do
-        for d, t in string.gmatch(line, "|([%/%a%d]+)|.-|([%d]+)|[CF]+|") do
-            hdd_temp["{"..d.."}"] = tonumber(t)
-        end
-    end
-    f:close()
-
-    return hdd_temp
-end
--- }}}
-
-return setmetatable(hddtemp_linux, { __call = function(_, ...) return worker(...) end })
+return helpers.setasyncall{
+    async = function(format, warg, callback)
+        if warg == nil then warg = 7634 end -- fallback to default hddtemp port
+        local hdd_temp = {} -- get info from the hddtemp daemon
+        spawn.with_line_callback_with_shell(
+            "echo | curl -fs telnet://127.0.0.1:" .. warg,
+            { stdout = function (line)
+                  for d, t in line:gmatch"|([%/%w]+)|.-|(%d+)|[CF]|" do
+                      hdd_temp["{"..d.."}"] = tonumber(t)
+                  end
+              end,
+              output_done = function () callback(hdd_temp) end })
+    end }