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---------------------------------------------------
-- Licensed under the GNU General Public License v2
-- * (c) 2010, Adrian C. <anrxc@sysphere.org>
---------------------------------------------------
-- {{{ Grab environment
local type = type
local io = { open = io.open }
local setmetatable = setmetatable
local string = { gfind = string.gfind }
local helpers = require("vicious.helpers")
-- }}}
-- Mbox: provides the subject of last e-mail in a mbox file
-- vicious.widgets.mbox
local mbox = {}
-- Initialize variables
local subject = "N/A"
-- {{{ Mailbox widget type
local function worker(format, warg)
if not warg then return end
-- mbox could be huge, get a 30kb chunk from EOF
if type(warg) ~= "table" then _mbox = warg end
-- * attachment could be much bigger than 30kb
local f = io.open(_mbox or warg[1])
f:seek("end", -30720)
local txt = f:read("*all")
f:close()
-- Find all Subject lines
for i in string.gfind(txt, "Subject: ([^\n]*)") do
subject = i
end
-- Check if we should scroll, or maybe truncate
if type(warg) == "table" then
if warg[3] ~= nil then
subject = helpers.scroll(subject, warg[2], warg[3])
else
subject = helpers.truncate(subject, warg[2])
end
end
return {helpers.escape(subject)}
end
-- }}}
return setmetatable(mbox, { __call = function(_, ...) return worker(...) end })
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