API: transform widgets namespace table to a directory

1 files changed, 72 insertions, 0 deletions

diff --git a/widgets/wifi.lua b/widgets/wifi.lua
new file mode 100644
index 0000000..65ffb79
--- /dev/null
+++ b/widgets/wifi.lua
@@ -0,0 +1,72 @@
+---------------------------------------------------
+-- Licensed under the GNU General Public License v2
+--  * (c) 2010, Adrian C. <anrxc@sysphere.org>
+---------------------------------------------------
+
+-- {{{ Grab environment
+local tonumber = tonumber
+local setmetatable = setmetatable
+local io = {
+    open = io.open,
+    popen = io.popen
+}
+local string = {
+    find = string.find,
+    match = string.match
+}
+-- }}}
+
+
+-- Wifi: provides wireless information for a requested interface
+module("vicious.widgets.wifi")
+
+
+-- {{{ Wireless widget type
+local function worker(format, iface)
+    -- Default values
+    local winfo = {
+        ["{ssid}"] = "N/A",
+        ["{mode}"] = "N/A",
+        ["{chan}"] = "N/A",
+        ["{rate}"] = 0,
+        ["{link}"] = 0,
+        ["{sign}"] = 0
+    }
+
+    -- Get data from iwconfig where available
+    local iwconfig = "/sbin/iwconfig"
+    local f = io.open(iwconfig, "rb")
+    if not f then
+        iwconfig = "/usr/sbin/iwconfig"
+    else
+        f:close()
+    end
+    local f = io.popen(iwconfig .." ".. iface .. " 2>&1")
+    local iw = f:read("*all")
+    f:close()
+
+    -- iwconfig wasn't found, isn't executable, or non-wireless interface
+    if iw == nil or string.find(iw, "No such device") then
+        return winfo
+    end
+
+    -- Output differs from system to system, some stats can be
+    -- separated by =, and not all drivers report all stats
+    winfo["{ssid}"] =  -- SSID can have almost anything in it
+      string.match(iw, 'ESSID[=:]"([%w%p]+[%s]*[%w%p]*]*)"') or winfo["{ssid}"]
+    winfo["{mode}"] =  -- Modes are simple, but also match the "-" in Ad-Hoc
+      string.match(iw, "Mode[=:]([%w%-]*)") or winfo["{mode}"]
+    winfo["{chan}"] =  -- Channels are plain digits
+      tonumber(string.match(iw, "Channel[=:]([%d]+)") or winfo["{chan}"])
+    winfo["{rate}"] =  -- Bitrate can start with a space, we don't want to display Mb/s
+      tonumber(string.match(iw, "Bit Rate[=:]([%s]?[%d%.]*)") or winfo["{rate}"])
+    winfo["{link}"] =  -- Link quality can contain a slash (32/70), match only the first number
+      tonumber(string.match(iw, "Link Quality[=:]([%d]+)") or winfo["{link}"])
+    winfo["{sign}"] =  -- Signal level can be a negative value, don't display decibel notation
+      tonumber(string.match(iw, "Signal level[=:]([%-]?[%d]+)") or winfo["{sign}"])
+
+    return winfo
+end
+-- }}}
+
+setmetatable(_M, { __call = function(_, ...) return worker(...) end })