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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")
}
-- This returns the percentage of used space on the given mountpoint
local 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
return setmetatable({
fs = fs,
}, { __call = function (_, ...) return get_data_source(...) end })
-- vim:ft=lua:ts=2:sw=2:sts=2:tw=80:et
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