Module:TNT

Not to be confused with Module:Template translation.

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Module:TNT
Module:TNT/sandbox

• See testcases
• Diff sandbox code

Documentation

This module allows templates and modules to be easily translated as part of the multilingual templates and modules project. Instead of storing English text in a module or a template, TNT module allows modules to be designed language-neutral, and store multilingual text in the tabular data pages on Commons. This way your module or template will use those translated strings (messages), or if the message has not yet been translated, will fallback to English. When someone updates the translation table, your page will automatically update (might take some time, or you can purge it), but no change in the template or module is needed on any of the wikis. This process is very similar to MediaWiki's localisation, and supports all standard localization conventions such as {{PLURAL|...}} and other parameters.

This module can be used from templates using #invoke, and from other modules. For a simple example, see Data:I18n/Template:Graphs.tab - a table with two messages, each message having a single parameter. By convention, all translation tables should have '''Data:I18n/...''' prefix to separate them from other types of data.

Using from Templates

Description	Wiki Markup
In a template, this command translates source_table message using Commons' Data:I18n/Template:Graphs.tab translation table.	{{#invoke:TNT | msg | I18n/Template:Graphs.tab | source_table }}
If your message contains parameters, you can specify them after the message ID.	{{#invoke:TNT | msg | I18n/Template:My Template.tab | message-with-two-params | param1 | param2 }}

Translating Template Parameters

Template parameters are usually stored as a JSON templatedata block inside the template's /doc subpage. This makes it convenient to translate, but when a new parameter is added to a global template, all /doc pages need to be updated in every language. TNT helps with this by automatically generating the templatedata block from a table stored on Commons. Placing this line into every /doc sub-page will use Data:Templatedata/Graph:Lines.tab table to generate all the needed templatedata information in every language. Even if the local community has not translated the full template documentation, they will be able to see all template parameters, centrally updated.

{{#invoke:TNT | doc | Graph:Lines }}

Using from Modules

Just like templates, modules should also use this module for localization:

local TNT = require('Module:TNT')

-- format <messageId> string with two parameters using a translation table.
local text = TNT.format('I18n/My_module_messages', 'messageId', 'param1', 'param2', ...)

-- Same, but translate to a specific language.
local text = TNT.formatInLanguage('fr', 'I18n/My_module_messages', 'messageId', 'param1', 'param2', ...)

---

--
-- ATTENTION:
--    Please do NOT rename this module - it has to be identical on all wikis.
--    This code is maintained at https://www.mediawiki.org/wiki/Module:TNT
--    Please do not modify it anywhere else, as it may get copied and override your changes.
--    Suggestions can be made at https://www.mediawiki.org/wiki/Module_talk:TNT
--
-- DESCRIPTION:
--    This module allows templates to use translations from the shared Datasets on Commons
--
--    The "msg" function uses a Commons dataset to translate a message
--    with a given key (e.g. source-table), plus optional arguments
--    to the wiki markup in the current content language.
--    Use lang=xx to set language.
--
--      {{#invoke:TNT | msg | Original/Template:Graphs.tab | source-table | param1 }}
--            uses https://commons.wikimedia.org/wiki/Data:Original/Template:Graphs.tab
--   
--    The "doc" function will generate the <templatedata> parameter documentation for templates.
--    This way all template parameters can be stored and localized in a single Commons dataset.
--    NOTE: "doc" assumes that all documentation is located in Data:Templatedata/* on Commons.
--
--      {{#invoke:TNT | doc | Graph:Lines }}
--            uses https://commons.wikimedia.org/wiki/Data:Templatedata/Graph:Lines.tab
--            if the current page is Template:Graph:Lines/doc
--

local p = {}
local i18nDataset = 'I18n/Module:TNT.tab'

function p.msg(frame)
	local dataset, id
	local params = {}
	local lang = nil
	for k, v in pairs(frame.args) do
		if k == 1 then
			dataset = v
		elseif k == 2 then
			id = v
		elseif type(k) == 'number' then
			table.insert(params, v)
		elseif k == 'lang' and v ~= '_' then
			lang = v
		end
	end
	return formatMessage(dataset, id, params, lang)
end

-- Converts first parameter to a interwiki-ready link. For example, it converts
-- "Sandbox/Sample.tab" -> 'commons:Data:Sandbox/Sample.tab'
function p.link(frame)
	return link(frame.args[1])
end

-- Given a dataset name, convert it to a title with the 'commons:data:' prefix
function link(dataset)
	dataset = 'Data:' .. (dataset or '')
	if mw.site.siteName == 'Wikimedia Commons' then
		return dataset
	else
		return 'commons:' .. dataset
	end
end

function p.doc(frame)
	dataset = 'Templatedata/' .. normalizeDataset(frame.args[1])
	-- TODO: add '_' parameter once lua starts reindexing properly for "all" languages
	local data = loadData(dataset)
	local names = {}
	for _, field in pairs(data.schema.fields) do
		table.insert(names, field.name)
	end

	local params = {}
	local paramOrder = {}
    for _, row in pairs(data.data) do
    	local newVal = {}
    	local name = nil
    	for pos, val in pairs(row) do
    		local columnName = names[pos]
    		if columnName == 'name' then
    			name = val
    		else
    			newVal[columnName] = val
    		end
    	end
    	if name then
    		params[name] = newVal
    		table.insert(paramOrder, name)
    	end
    end
	
	local templateData = {
		params=params,
		paramOrder=paramOrder,
		description=data.description
	}
	
	templateData = mw.text.jsonEncode(templateData)

	return frame:extensionTag('templatedata', templateData) .. tntMessage('edit_doc', {link(dataset)})
end

function formatMessage(dataset, key, params, lang)
    for _, row in pairs(loadData(dataset, lang).data) do
    	local id, msg = unpack(row)
    	if id == key then
    		local result = mw.message.newRawMessage(msg, unpack(params))
    		return result:plain()
    	end
    end
	if dataset == i18nDataset then
		-- Prevent cyclical calls
		error('Invalid message key "' .. key .. '"')
	else
		error(tntMessage('error_bad_msgkey', {key, link(dataset)}))
	end
end

function tntMessage(key, params)
	return formatMessage(i18nDataset, key, params)
end

function normalizeDataset(dataset)
	if not dataset or dataset == '' then
		error(tntMessage('error_no_dataset', {}))
	end
	if string.sub(dataset,-4) ~= '.tab' then
		dataset = dataset .. '.tab'
	end
	return dataset
end

function loadData(dataset, lang)
	local data = mw.ext.data.get(dataset, lang)
	if data == false then
		if dataset == i18nDataset then
			-- Prevent cyclical calls
			error('Missing Commons dataset ' .. i18nDataset)
		else
			error(tntMessage('error_bad_dataset', {link(dataset)}))
		end
	end
	return data
end

return p