64 lines
2.2 KiB
Lua
64 lines
2.2 KiB
Lua
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-- widget type providing the count of total, old and new messages in mbox files
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-- Copyright (C) 2010 Adrian C. <anrxc@sysphere.org>
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-- Copyright (C) 2017 mutlusun <mutlusun@github.com>
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--
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-- This file is part of Vicious.
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--
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-- Vicious is free software: you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as
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-- published by the Free Software Foundation, either version 2 of the
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-- License, or (at your option) any later version.
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--
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-- Vicious is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with Vicious. If not, see <https://www.gnu.org/licenses/>.
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-- {{{ Grab environment
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local io = { open = io.open }
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local helpers = require"vicious.helpers"
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-- }}}
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-- {{{ Mbox count widget type
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return helpers.setcall(function (format, warg)
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if not warg then return end
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-- Initialize counters
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local count = { old = 0, total = 0, new = 0 }
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-- Get data from mbox files
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for i=1, #warg do
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local f = io.open(warg[i])
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while true do
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-- Read the mbox line by line, if we are going to read
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-- some *HUGE* folders then switch to reading chunks
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local lines = f:read("*line")
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if not lines then break end
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-- Find all messages
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-- * http://www.jwz.org/doc/content-length.html
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local _, from = lines:find"^From[%s]"
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if from ~= nil then count.total = count.total + 1 end
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-- Read messages have the Status header
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local _, status = lines:find"^Status:[%s]RO$"
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if status ~= nil then count.old = count.old + 1 end
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-- Skip the folder internal data
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local _, int = lines:find"^Subject:[%s].*FOLDER[%s]INTERNAL[%s]DATA"
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if int ~= nil then count.total = count.total - 1 end
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end
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f:close()
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end
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-- Substract total from old to get the new count
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count.new = count.total - count.old
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return {count.total, count.old, count.new}
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end)
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-- }}}
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