43 lines
1.0 KiB
Lua
43 lines
1.0 KiB
Lua
---------------------------------------------------
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-- Licensed under the GNU General Public License v2
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-- * (c) 2010, Adrian C. <anrxc@sysphere.org>
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---------------------------------------------------
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-- {{{ Grab environment
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local io = { popen = io.popen }
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local math = { max = math.max }
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local setmetatable = setmetatable
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-- }}}
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-- Pkg: provides number of pending updates on UNIX systems
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-- vicious.widgets.pkg
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local pkg = {}
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-- {{{ Packages widget type
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local function worker(format, warg)
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if not warg then return end
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-- Initialize counters
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local updates = 0
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local manager = {
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["Arch"] = { cmd = "pacman -Qu" },
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["Arch S"] = { cmd = "checkupdates" },
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}
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-- Check if updates are available
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local _pkg = manager[warg]
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local f = io.popen(_pkg.cmd)
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for line in f:lines() do
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updates = updates + 1
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end
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f:close()
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return {_pkg.sub and math.max(updates-_pkg.sub, 0) or updates}
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end
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-- }}}
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return setmetatable(pkg, { __call = function(_, ...) return worker(...) end })
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