Module:TNTFallback
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Documentation for this module may be created at Module:TNTFallback/doc
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-- This module implements a wrapper for [[Module:TNT]] that allows returning
-- a fallback message; used by {{Documentation}}.
--
-- @module TNTFallback
-- @alias p
-- @author [[User:ExE Boss]]
-- @require [[Module:No globals]]
-- @require [[Module:TNT]]
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require("strict");
local TNT = require("Module:TNT");
local p = {};
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-- Based on [[Module:TNT]]'s `msg` function,
-- but takes an optional `fallback` parameter.
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function p.msg(frame)
local dataset, key;
local params = { n = 0 };
local lang = nil;
local fallback = nil;
for k, v in pairs(frame.args) do
if (k == 1) then
dataset = v;
elseif (k == 2) then
key = v;
elseif (type(k) == "number" and k > 2) then
local i = k - 2;
params[i] = v;
params.n = math.max(params.n, i);
elseif ((k == "lang") and (v ~= "_")) then
lang = v;
elseif ((k == "fallback") and (v ~= "")) then
fallback = v;
end
end
local result;
if (lang) then
result = TNT.formatInLanguage(lang, dataset, key, unpack(params, 1, params.n));
else
result = TNT.format(dataset, key, unpack(params, 1, params.n));
end
if (fallback and (
-- not translated
(result and result == TNT.formatInLanguage("en", dataset, key, unpack(params, 1, params.n)))
-- no message
or (not result)
)) then
if (not lang) then
if (frame:callParserFunction("int:lang") ~= "en") then
return mw.message.newRawMessage(fallback, unpack(params, 1, params.n)):plain();
end
elseif (lang ~= "en") then
return mw.message.newRawMessage(fallback, unpack(params, 1, params.n)):plain();
end
end
return result;
end
return p;