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---------------------------------------------------
-- Licensed under the GNU General Public License v2
-- * (c) 2009, Adrian C. <anrxc.sysphere.org>
---------------------------------------------------
-- {{{ Grab environment
local io = { open = io.open }
local setmetatable = setmetatable
local string = { find = string.find }
-- }}}
-- Mboxc: provides the count of total, old and new messages in mbox files
module("vicious.mboxc")
-- {{{ Mbox count widget type
local function worker(format, mbox)
-- Initialise counters
local count = {
old = 0,
total = 0,
new = 0
}
-- Get data from mbox files
for i=1, #mbox do
local f = io.open(mbox[i])
while true do
-- Read the mbox line by line, if we are going to read some
-- *HUGE* folders then switch to reading chunks
local lines = f:read("*line")
if not lines then break end
-- Find all messages
-- * http://www.jwz.org/doc/content-length.html
local _, from = string.find(lines, "^From[%s]")
if from ~= nil then count.total = count.total + 1 end
-- Read messages have the Status header
local _, status = string.find(lines, "^Status:[%s]RO$")
if status ~= nil then count.old = count.old + 1 end
-- Skip the folder internal data
local _, intdata = string.find(lines, "^Subject:[%s].*FOLDER[%s]INTERNAL[%s]DATA")
if intdata ~= nil then count.total = count.total - 1 end
end
f:close()
end
-- Substract total from old to get the new count
count.new = count.total - count.old
return {count.total, count.old, count.new}
end
-- }}}
setmetatable(_M, { __call = function(_, ...) return worker(...) end })
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