51 lines
1.3 KiB
Lua
51 lines
1.3 KiB
Lua
---------------------------------------------------
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-- Licensed under the GNU General Public License v2
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-- * (c) 2009, Adrian C. <anrxc@sysphere.org>
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---------------------------------------------------
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-- {{{ Grab environment
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local type = type
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local io = { open = io.open }
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local setmetatable = setmetatable
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local string = { gfind = string.gfind }
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local helpers = require("vicious.helpers")
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-- }}}
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-- Mbox: provides the subject of last e-mail in a mbox file
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module("vicious.mbox")
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-- {{{ Mailbox widget type
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local function worker(format, warg)
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if type(warg) ~= "table" then mbox = warg end
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-- mbox could be huge, get a 30kb chunk from EOF
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-- * attachments could be much bigger than this
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local f = io.open(mbox or warg[1])
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f:seek("end", -30720)
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local txt = f:read("*all")
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f:close()
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-- Default value
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local subject = "N/A"
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-- Find all Subject lines
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for i in string.gfind(txt, "Subject: ([^\n]*)") do
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subject = i
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end
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-- Check if we should scroll, or maybe truncate
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if type(warg) == "table" then
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if warg[3] ~= nil then
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subject = helpers.scroll(subject, warg[2], warg[3])
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else
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subject = helpers.truncate(subject, warg[2])
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end
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end
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return {helpers.escape(subject)}
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end
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-- }}}
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setmetatable(_M, { __call = function(_, ...) return worker(...) end })
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