Module:Description

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This documentation is transcluded from Module:Description/doc.

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Description is a module implementing functionality of {{Description}}
template, which is used by {{en}}, {{de}} and other language templates.

Authors and maintainers:
* User:Jarekt  
]]

local core = require('Module:Core')
local p = {}

function p.langWrapper(text, textLang, inline) 
-- code equivalent to https://commons.wikimedia.org/wiki/Template:Description
	local wordsep  = mw.message.new( "Word-separator" ):inLanguage(textLang):plain()
	local LangName = mw.language.fetchLanguageName( textLang, textLang)
	local language = mw.language.new( textLang )
	local dir      = language:getDir()  
	local ltag = mw.html.create('span')  -- bold language name string
		:addClass('language '..textLang) -- classes: "language" and "en", "de" etc.
		:cssText('display:inline' and core.yesno(inline) or nil)
		:wikitext('<b>' .. language:ucfirst(LangName)..':</b>')
	
	-- mw-content-rtl and mw-content-ltr are defined in (?)
	-- https://gerrit.wikimedia.org/g/mediawiki/core/+/3825c4d04d9d9701ac04bb3bc6a2f2ca43253d10/resources/src/mediawiki.skinning/content.css
	local dtag = mw.html.create('div')
		:addClass('description') -- div.description is tracked by mw:Extension:CommonsMetadata
		:addClass('mw-content-'..dir) -- div.description is tracked by mw:Extension:CommonsMetadata
		:addClass(textLang) 
		:attr('dir', dir)
		:attr('lang', textLang)
		:wikitext(tostring(ltag) .. wordsep .. text)
	return tostring(dtag)
end

function p.description(frame) 
	local args = core.getArgs(frame)
	local desc = p.langWrapper(args.text, args.lang, args.inline)
	if args.text == nil then -- if no string than add error message and a category
		local cat = 'Category:Language templates with no text displayed'
		local msg  = core.formatMessage('I18n/DescriptionError.tab', 'missing text', lang)
		msg = mw.html.create('span'):addClass("error"):wikitext(msg)
		msg = '[{{fullurl:' .. cat .. '}} ' .. tostring(msg) .. ']'
		msg = mw.html.create('span'):addClass("plainlinks"):wikitext(msg)
		local desc = p.langWrapper(msg, args.lang, args.inline)
		local namespace = mw.title.getCurrentTitle().namespace
		local LUT = {[0]=1, [6]=1, [10]=1, [14]=1, [100]=1, [106]=1}
		if LUT[namespace]==1 then
			desc = desc .. '[[' .. cat .. ']]'
		end
	end
	return desc
end

return p