From 237470c8f45190b213e3a173ce6ae1a74b3e11fe Mon Sep 17 00:00:00 2001
From: "Adrian C. (anrxc)" <anrxc@sysphere.org>
Date: Sun, 14 Mar 2010 01:55:33 +0100
Subject: API: transform widgets namespace table to a directory

---
 widgets/fs.lua | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 widgets/fs.lua

(limited to 'widgets/fs.lua')

diff --git a/widgets/fs.lua b/widgets/fs.lua
new file mode 100644
index 0000000..a85b903
--- /dev/null
+++ b/widgets/fs.lua
@@ -0,0 +1,52 @@
+---------------------------------------------------
+-- Licensed under the GNU General Public License v2
+--  * (c) 2010, Adrian C. <anrxc@sysphere.org>
+--  * (c) 2009, Lucas de Vries <lucas@glacicle.com>
+---------------------------------------------------
+
+-- {{{ Grab environment
+local tonumber = tonumber
+local io = { popen = io.popen }
+local setmetatable = setmetatable
+local string = { match = string.match }
+local helpers = require("vicious.helpers")
+-- }}}
+
+
+-- FS: provides file system disk space usage
+module("vicious.widgets.fs")
+
+
+-- Variable definitions
+local unit = { ["mb"] = 1024, ["gb"] = 1024^2 }
+
+-- {{{ Filesystem widget type
+local function worker(format, nfs)
+    -- Fallback to listing local filesystems
+    if nfs then nfs = "" else nfs = "-l" end
+
+    -- Get (non-localized)data from df
+    local f = io.popen("LC_ALL=C df -kP " .. nfs)
+    local fs_info = {}
+
+    for line in f:lines() do -- Match: (size) (used)(avail)(use%) (mount)
+        local s     = string.match(line, "^.-[%s]([%d]+)")
+        local u,a,p = string.match(line, "([%d]+)[%D]+([%d]+)[%D]+([%d]+)%%")
+        local m     = string.match(line, "%%[%s]([%p%w]+)")
+
+        if u and m then -- Handle 1st line and broken regexp
+            helpers.uformat(fs_info, m .. " size",  s, unit)
+            helpers.uformat(fs_info, m .. " used",  u, unit)
+            helpers.uformat(fs_info, m .. " avail", a, unit)
+
+            fs_info["{" .. m .. " used_p}"]  = tonumber(p)
+            fs_info["{" .. m .. " avail_p}"] = 100 - tonumber(p)
+        end
+    end
+    f:close()
+
+    return fs_info
+end
+-- }}}
+
+setmetatable(_M, { __call = function(_, ...) return worker(...) end })
-- 
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