Modul:sortkeys

-- Load the wikitext of a page, look at each top-level header, and if it is a
-- valid language name, generate a sortkey for it. Return all sortkeys.
local function generate_sortkeys(title)
	local sortkeys = {}
	
	local success, title_object = pcall(mw.title.new, title)
	local content
	if success and title_object then -- If title was valid, get content.
		content = title_object:getContent()
	end
	
	if not content then
		mw.log(string.format("Page name '%s' invalid or could not get page content. "
			.. "Could not create sortkeys.",
			title))
		return sortkeys -- Return empty table.
	end
	
	local get_by_name = require "Module:languages".getByCanonicalName
	
	for language_name in content:gmatch("%f==%f(.-)%f==%f") do
		local lang = get_by_name(language_name)
		-- If name is valid, make a sortkey and add it to the table with the
		-- language code as key.
		if lang then
			sortkeys = lang:makeSortKey(title, nil, true)
		end
	end
	
	mw.logObject(sortkeys)
	
	return sortkeys
end

return generate_sortkeys(mw.title.getCurrentTitle().text)