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MN_Latest.lua
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require("strict")
--------------------------------------------------------------------------
-- Lmod License
--------------------------------------------------------------------------
--
-- Lmod is licensed under the terms of the MIT license reproduced below.
-- This means that Lmod is free software and can be used for both academic
-- and commercial purposes at absolutely no cost.
--
-- ----------------------------------------------------------------------
--
-- Copyright (C) 2008-2018 Robert McLay
--
-- Permission is hereby granted, free of charge, to any person obtaining
-- a copy of this software and associated documentation files (the
-- "Software"), to deal in the Software without restriction, including
-- without limitation the rights to use, copy, modify, merge, publish,
-- distribute, sublicense, and/or sell copies of the Software, and to
-- permit persons to whom the Software is furnished to do so, subject
-- to the following conditions:
--
-- The above copyright notice and this permission notice shall be
-- included in all copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-- OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
-- BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-- ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-- CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-- THE SOFTWARE.
--
--------------------------------------------------------------------------
local FrameStk = require("FrameStk")
local MName = require("MName")
local M = inheritsFrom(MName)
local concatTbl = table.concat
local dbg = require("Dbg"):dbg()
M.my_name = "latest"
--------------------------------------------------------------------------
-- Show the latest modifier.
-- @param self A MName object
function M.show(self)
local a = {}
a[#a+1] = self:actionName()
a[#a+1] = "(\""
a[#a+1] = self:sn()
a[#a+1] = "\")"
return concatTbl(a,"")
end
local s_stepA = {
MName.find_latest,
}
function M.steps()
return s_stepA
end
--------------------------------------------------------------------------
-- Do a prereq check to see if version is latest one.
-- @param self A MName object.
function M.prereq(self)
dbg.start{"MN_Latest:prereq()"}
local mt = FrameStk:singleton():mt()
local sn = self:sn()
local status = mt:status(sn)
local sn_status = ((status == "active") or (status == "pending"))
if (not sn_status) then
dbg.fini("MN_Latest:prereq")
return self:show()
end
local mname = MName:new("load",sn,"latest")
local version = mname:version()
if (not version) then
dbg.fini("MN_Latest:prereq")
return self:show()
end
if (version ~= mt:version(sn)) then
dbg.fini("MN_Latest:prereq")
return self:show()
end
dbg.fini("MN_Latest:prereq")
return false
end
return M