al-skel/home/.config/awesome/vicious/widgets/mdir.lua

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-- Licensed under the GNU General Public License v2
--  * (c) 2010, Adrian C. <anrxc@sysphere.org>
--  * (c) Maildir Biff Widget, Fredrik Ax
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-- {{{ Grab environment
local io = { popen = io.popen }
local setmetatable = setmetatable
local helpers = require("vicious.helpers")
-- }}}


-- Mdir: provides the number of new and unread messages in Maildir structures/dirs
-- vicious.widgets.mdir
local mdir = {}


-- {{{ Maildir widget type
local function worker(format, warg)
  if not warg then return end

  -- Initialize counters
  local count = { new = 0, cur = 0 }

  for i=1, #warg do
    quoted_path = helpers.shellquote(warg[i])
    -- Recursively find new messages
    local f = io.popen("find "..quoted_path.." -type f -wholename '*/new/*'")
    for line in f:lines() do count.new = count.new + 1 end
    f:close()

    -- Recursively find "old" messages lacking the Seen flag
    local f = io.popen("find "..quoted_path.." -type f -regex '.*/cur/.*2,[^S]*$'")
    for line in f:lines() do count.cur = count.cur + 1 end
    f:close()
  end

  return {count.new, count.cur}
end
-- }}}

return setmetatable(mdir, { __call = function(_, ...) return worker(...) end })