aboutsummaryrefslogtreecommitdiff
path: root/pacman.lua
blob: abe0a733a7dbfdde1f4c9428e4c07801fefb7ae9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
----------------------------------------------------------
-- Licensed under the GNU General Public License version 2
--  * Copyright (C) 2009 Adrian C. <anrxc_sysphere_org>
----------------------------------------------------------

-- {{{ Grab environment
local tonumber = tonumber
local io = { popen = io.popen }
local setmetatable = setmetatable
-- }}}


-- Pacman: provides number of pending updates on Arch Linux
module("vicious.pacman")


-- {{{ Pacman widget type
local function worker(format)
    -- Initialise counters
    local updates = 0

    -- Check if updates are available
    local f = io.popen("pacman -Qu")

    for line in f:lines() do
        -- Pacman 3.2 provides the number of available updates
        --updates = line:match("^Targets[%s]%(([%d]+)%)") or 0
        ---- If the count changed then break out of the loop
        --if tonumber(updates) > 0 then
        --    break
        --end

        -- Pacman 3.3 returns one line per package
        updates = updates + 1
    end
    f:close()

    return {updates}
end
-- }}}

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