uniform timers for single-instance widgets; #114

[etc/awesome.git] / widgets / mpd.lua

diff --git a/widgets/mpd.lua b/widgets/mpd.lua
index 3ebc76152affd338e0041cec415ce1a7b9af2b33..c10eb7804f77130ec9796cb8062f72e75961448f 100644 (file)
--- a/widgets/mpd.lua
+++ b/widgets/mpd.lua
@@ -8,15 +8,17 @@
 --]]
 
 local helpers      = require("lain.helpers")
+local async        = require("lain.asyncshell")
 
 local escape_f     = require("awful.util").escape
 local naughty      = require("naughty")
 local wibox        = require("wibox")
 
-local io           = { popen    = io.popen }
 local os           = { execute  = os.execute,
                        getenv   = os.getenv }
-local string       = { format   = string.format, 
+local math         = { floor    = math.floor }
+local string       = { format   = string.format,
+                       match    = string.match,
                        gmatch   = string.gmatch }
 
 local setmetatable = setmetatable
@@ -26,14 +28,15 @@ local setmetatable = setmetatable
 local mpd = {}
 
 local function worker(args)
-    local args       = args or {}
-    local timeout    = args.timeout or 2
-    local password   = args.password or ""
-    local host       = args.host or "127.0.0.1"
-    local port       = args.port or "6600"
-    local music_dir  = args.music_dir or os.getenv("HOME") .. "/Music"
-    local cover_size = args.cover_size or 100
-    local settings   = args.settings or function() end
+    local args        = args or {}
+    local timeout     = args.timeout or 2
+    local password    = args.password or ""
+    local host        = args.host or "127.0.0.1"
+    local port        = args.port or "6600"
+    local music_dir   = args.music_dir or os.getenv("HOME") .. "/Music"
+    local cover_size  = args.cover_size or 100
+    local default_art = args.default_art or ""
+    local settings    = args.settings or function() end
 
     local mpdcover = helpers.scripts_dir .. "mpdcover"
     local mpdh = "telnet://" .. host .. ":" .. port
@@ -49,55 +52,57 @@ local function worker(args)
     helpers.set_map("current mpd track", nil)
 
     function mpd.update()
-        mpd_now = {
-            state  = "N/A",
-            file   = "N/A",
-            artist = "N/A",
-            title  = "N/A",
-            album  = "N/A",
-            date   = "N/A"
-        }
-
-        local f = io.popen(echo .. " | curl --connect-timeout 1 -fsm 1 " .. mpdh)
-
-        for line in f:lines() do
-            for k, v in string.gmatch(line, "([%w]+):[%s](.*)$") do
-                if     k == "state"  then mpd_now.state  = v
-                elseif k == "file"   then mpd_now.file   = v
-                elseif k == "Artist" then mpd_now.artist = escape_f(v)
-                elseif k == "Title"  then mpd_now.title  = escape_f(v)
-                elseif k == "Album"  then mpd_now.album  = escape_f(v)
-                elseif k == "Date"   then mpd_now.date   = escape_f(v)
+        async.request(echo .. " | curl --connect-timeout 1 -fsm 3 " .. mpdh, function (f)
+            mpd_now = {
+                state   = "N/A",
+                file    = "N/A",
+                artist  = "N/A",
+                title   = "N/A",
+                album   = "N/A",
+                date    = "N/A",
+                time    = "N/A",
+                elapsed = "N/A"
+            }
+
+            for line in f:lines() do
+                for k, v in string.gmatch(line, "([%w]+):[%s](.*)$") do
+                    if     k == "state"   then mpd_now.state   = v
+                    elseif k == "file"    then mpd_now.file    = v
+                    elseif k == "Artist"  then mpd_now.artist  = escape_f(v)
+                    elseif k == "Title"   then mpd_now.title   = escape_f(v)
+                    elseif k == "Album"   then mpd_now.album   = escape_f(v)
+                    elseif k == "Date"    then mpd_now.date    = escape_f(v)
+                    elseif k == "Time"    then mpd_now.time    = v
+                    elseif k == "elapsed" then mpd_now.elapsed = string.match(v, "%d+")
+                    end
                 end
             end
-        end
 
-        f:close()
+            mpd_notification_preset.text = string.format("%s (%s) - %s\n%s", mpd_now.artist,
+                                           mpd_now.album, mpd_now.date, mpd_now.title)
+            widget = mpd.widget
+            settings()
 
-        mpd_notification_preset.text = string.format("%s (%s) - %s\n%s", mpd_now.artist,
-                                       mpd_now.album, mpd_now.date, mpd_now.title)
-        widget = mpd.widget
-        settings()
-
-        if mpd_now.state == "play"
-        then
-            if mpd_now.title ~= helpers.get_map("current mpd track")
+            if mpd_now.state == "play"
             then
-                helpers.set_map("current mpd track", mpd_now.title)
-
-                os.execute(string.format("%s %q %q %d", mpdcover, music_dir,
-                           mpd_now.file, cover_size))
-
-                mpd.id = naughty.notify({
-                    preset = mpd_notification_preset,
-                    icon = "/tmp/mpdcover.png",
-                    replaces_id = mpd.id
-                }).id
+                if mpd_now.title ~= helpers.get_map("current mpd track")
+                then
+                    helpers.set_map("current mpd track", mpd_now.title)
+
+                    os.execute(string.format("%s %q %q %d %q", mpdcover, music_dir,
+                               mpd_now.file, cover_size, default_art))
+
+                    mpd.id = naughty.notify({
+                        preset = mpd_notification_preset,
+                        icon = "/tmp/mpdcover.png",
+                        replaces_id = mpd.id,
+                    }).id
+                end
+            elseif mpd_now.state ~= "pause"
+            then
+                helpers.set_map("current mpd track", nil)
             end
-        elseif mpd_now.state ~= "pause"
-        then
-            helpers.set_map("current mpd track", nil)
-             end
+        end)
     end
 
     helpers.newtimer("mpd", timeout, mpd.update)