Mô đun:If preview

local p = {}local getArgs = require("Mô đun:Arguments").getArgslocal yn = require("Mô đun:Yesno")local cfg = mw.loadData('Mô đun:If preview/configuration')--[[mainThis function returns either the first argument or second argument passed tothis module, depending on whether the page is being previewed.]]function p.main(frame)	local args = getArgs(frame)	if cfg.preview then		return args[1] or ''	else		return args[2] or ''	endend--[[pmainThis function returns either the first argument or second argument passed tothis module's parent (i.e. template using this module), depending on whether itis being previewed.]]function p.pmain(frame)	return p.main(frame:getParent())endlocal function warning_text(warning)	return mw.ustring.format(		cfg.warning_infrastructure,		cfg.templatestyles,		warning	)endfunction p._warning(args)		local warning = args[1] and args[1]:match('^%s*(.-)%s*$') or ''	if warning == '' then		return warning_text(cfg.missing_warning)	end		if not cfg.preview then return '' end		if yn(args['consolewarning']) then mw.addWarning(args[1] or cfg.missing_warning) end	return warning_text(warning)end--[[warningThis function returns a "preview warning", which is the first argument markedup with HTML and some supporting text, depending on whether the page is being previewed.]]-- function p.warning(frame)-- 	mw.addWarning(frame.args[1] or cfg.missing_warning)-- 	return p._warning(frame.args)-- end--[[warning, but for pass-through templates like {{preview warning}}]]function p.pwarning(frame)	local args = getArgs(frame)	return p._warning(args)end--[[Does both mw.addWarning and preview warning]]function p.warn(text)	if text == nil or text == "" then return "" end	mw.addWarning(text)	return p._warning({text})end--[[Console warning]]function p.consoleWarning(frame)	local args = getArgs(frame)	mw.addWarning(args[1] or cfg.missing_warning)	return ''endreturn p