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task widget: make command line configurable
[etc/awesome.git] / widgets / net.lua
diff --git a/widgets/net.lua b/widgets/net.lua
index 983da41da0655e5a45ef366833045cda12d0fc80..ee2cfa7a5fe95e98ee654ba8405ffeddd8810fa0 100644 (file)
--- a/widgets/net.lua
+++ b/widgets/net.lua
@@ -8,8 +8,6 @@
 --]]
 
 local helpers      = require("lain.helpers")
 --]]
 
 local helpers      = require("lain.helpers")
-
-local notify_fg    = require("beautiful").fg_focus
 local naughty      = require("naughty")
 local wibox        = require("wibox")
 
 local naughty      = require("naughty")
 local wibox        = require("wibox")
 
@@ -21,93 +19,126 @@ local setmetatable = setmetatable
 
 -- Network infos
 -- lain.widgets.net
 
 -- Network infos
 -- lain.widgets.net
-local net = {}
 
 
-function net.get_device()
-    local ws = helpers.read_pipe("ip link show | cut -d' ' -f2,9")
-    ws = ws:match("%w+: UP") or ws:match("ppp%w+: UNKNOWN")
-    if ws ~= nil then
-        return ws:match("(%w+):")
-    else
-        return "network off"
+local function worker(args)
+    local net = { last_t = 0, last_r = 0, devices = {} }
+
+    function net.get_first_device()
+        local ws = helpers.read_pipe("ip link show | cut -d' ' -f2,9")
+        ws = ws:match("%w+: UP") or ws:match("ppp%w+: UNKNOWN")
+        if ws then return { ws:match("(%w+):") }
+        else return {} end
     end
     end
-end
 
 
-local function worker(args)
-    local args = args or {}
-    local timeout = args.timeout or 1
-    local units = args.units or 1024 --kb
-    local notify = args.notify or "on"
-    local screen = args.screen or 1
+    local args     = args or {}
+    local timeout  = args.timeout or 2
+    local units    = args.units or 1024 --kb
+    local notify   = args.notify or "on"
+    local screen   = args.screen or 1
     local settings = args.settings or function() end
     local settings = args.settings or function() end
-
-    iface = args.iface or net.get_device()
+    local iface    = args.iface or net.get_first_device()
 
     net.widget = wibox.widget.textbox('')
 
 
     net.widget = wibox.widget.textbox('')
 
-    helpers.set_map(iface, true)
-    helpers.set_map("net_t", 0)
-    helpers.set_map("net_r", 0)
+    -- Compatibility with old API where iface was a string corresponding to 1 interface
+    if type(iface) == "string" then
+        iftable = {iface}
+    else
+        iftable = iface
+    end
+
+    -- Mark all devices as initially online/active
+    for i, dev in ipairs(iftable) do
+        helpers.set_map(dev, true)
+    end
 
     function update()
 
     function update()
+        -- This check is required to ensure we keep looking for one device if
+        -- none is found by net.get_first_device() at startup (i.e. iftable = {})
+        if next(iftable) == nil then
+            iftable = net.get_first_device()
+        end
+
+        -- These are the totals over all specified interfaces
         net_now = {
         net_now = {
-            sent     = "0.0",
-            received = "0.0"
+            -- New api - Current state of requested devices
+            devices  = {},
+            -- Bytes since last iteration
+            sent     = 0,
+            received = 0
         }
 
         }
 
-        if iface == "" or string.match(iface, "network off")
-        then
-            iface = net.get_device()
-        end
+        -- Total bytes transfered
+        local total_t = 0
+        local total_r = 0
 
 
-        local now_t = helpers.first_line('/sys/class/net/' .. iface ..
-                                           '/statistics/tx_bytes') or 0
-        local now_r = helpers.first_line('/sys/class/net/' .. iface ..
-                                           '/statistics/rx_bytes') or 0
+        for i, dev in ipairs(iftable) do
+            local dev_now = {}
+            local dev_before = net.devices[dev] or { last_t = 0, last_r = 0 }
 
 
-        if now_t ~= helpers.get_map("net_t")
-           or now_r ~= helpers.get_map("net_r") then
-            net_now.carrier = helpers.first_line('/sys/class/net/' .. iface ..
-                                           '/carrier') or "0"
-            net_now.state = helpers.first_line('/sys/class/net/' .. iface ..
-                                           '/operstate') or "down"
+            dev_now.carrier  = helpers.first_line(string.format('/sys/class/net/%s/carrier', dev)) or '0'
+            dev_now.state    = helpers.first_line(string.format('/sys/class/net/%s/operstate', dev)) or 'down'
 
 
-            net_now.sent = (now_t - net.last_t) / timeout / units
-            net_now.sent = string.gsub(string.format('%.1f', net_now.sent), ",", ".")
+            local now_t      = tonumber(helpers.first_line(string.format('/sys/class/net/%s/statistics/tx_bytes', dev)) or 0)
+            local now_r      = tonumber(helpers.first_line(string.format('/sys/class/net/%s/statistics/rx_bytes', dev)) or 0)
 
 
-            net_now.received = (now_r - net.last_r) / timeout / units
-            net_now.received = string.gsub(string.format('%.1f', net_now.received), ",", ".")
+            dev_now.sent     = (now_t - dev_before.last_t) / timeout / units
+            dev_now.received = (now_r - dev_before.last_r) / timeout / units
 
 
-            widget = net.widget
-            settings()
+            net_now.sent     = net_now.sent     + dev_now.sent
+            net_now.received = net_now.received + dev_now.received
 
 
-            helpers.set_map("net_t", now_t)
-            helpers.set_map("net_r", now_r)
-        end
+            dev_now.sent     = string.gsub(string.format('%.1f', dev_now.sent), ',', '.')
+            dev_now.received = string.gsub(string.format('%.1f', dev_now.received), ',', '.')
+
+            dev_now.last_t   = now_t
+            dev_now.last_r   = now_r
 
 
-        if net_now.carrier ~= "1" and notify == "on"
-        then
-            if helpers.get_map(iface)
-            then
+            -- This will become dev_before in the next update/iteration
+            net.devices[dev] = dev_now
+
+            total_t  = total_t + now_t
+            total_r  = total_r + now_r
+
+            -- Notify only once when connection is loss
+            if string.match(dev_now.carrier, "0") and notify == "on" and helpers.get_map(dev) then
                 naughty.notify({
                 naughty.notify({
-                    title    = iface,
+                    title    = dev,
                     text     = "no carrier",
                     text     = "no carrier",
-                    timeout  = 7,
-                    position = "top_left",
                     icon     = helpers.icons_dir .. "no_net.png",
                     icon     = helpers.icons_dir .. "no_net.png",
-                    fg       = notify_fg or "#FFFFFF",
                     screen   = screen
                 })
                     screen   = screen
                 })
-                helpers.set_map(iface, false)
+                helpers.set_map(dev, false)
+            elseif string.match(dev_now.carrier, "1") then
+                helpers.set_map(dev, true)
             end
             end
-        else
-            helpers.set_map(iface, true)
+
+            -- Old api compatibility
+            net_now.carrier      = dev_now.carrier
+            net_now.state        = dev_now.state
+            -- And new api
+            net_now.devices[dev] = dev_now
+            -- With the new api new_now.sent and net_now.received will be the
+            -- totals across all specified devices
+
+        end
+
+        if total_t ~= net.last_t or total_r ~= net.last_r then
+            -- Convert to a string to round the digits after the float point
+            net_now.sent     = string.gsub(string.format('%.1f', net_now.sent), ',', '.')
+            net_now.received = string.gsub(string.format('%.1f', net_now.received), ',', '.')
+
+            widget = net.widget
+            settings()
+
+            net.last_t = total_t
+            net.last_r = total_r
         end
     end
 
         end
     end
 
-    helpers.newtimer(iface, timeout, update, false)
+    helpers.newtimer(iface, timeout, update)
 
 
-    return net.widget
+    return setmetatable(net, { __index = net.widget })
 end
 
 end
 
-return setmetatable(net, { __call = function(_, ...) return worker(...) end })
+return setmetatable({}, { __call = function(_, ...) return worker(...) end })
awesome window-manager configuration

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