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-----------------------------------
-- Author: Uli Schlachter --
-- Copyright 2009 Uli Schlachter --
-----------------------------------
local io = io
local setmetatable = setmetatable
local pairs = pairs
local lib = {
widget = require("obvious.lib.widget")
}
module("obvious.fs_usage")
-- This returns the percentage of used space on the given mountpoint
function fs(path)
local df = io.popen("LC_ALL=C df -hP " .. path)
local key
local ret = nil
if not df then
return nil
end
for line in df:lines() do
local mountpoint = line:match("%% ([-/%w]+)$")
local dev = line:match("^[%w/-]+")
local perc = line:match("(%d+)%%")
if perc ~= nil and mountpoint ~= nil and dev ~= nil then
ret = perc
end
end
df:close()
return ret
end
local function get(data)
return fs(data.path)
end
local function get_data_source(path)
local path = path or "/"
local ret = {}
ret.max = 100
ret.get = get
ret.path = path
return lib.widget.from_data_source(ret)
end
setmetatable(_M, { __call = function (_, ...) return get_data_source(...) end })
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=4:softtabstop=4:encoding=utf-8:textwidth=80
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