Module:etymology languages/templates

local export = {}

function export.exists(frame)
	local args = frame.args
	local etymlang = args[1] or error("Etymology language code has not been specified. Please pass parameter 1 to the module invocation.")
	
	etymlang = require("Module:etymology languages").getByCode(etymlang)
	
	if etymlang then
		return "1"
	else
		return ""
	end
end

function export.getByCode(frame)
	local args = frame.args
	local etymlang = args[1] or error("Etymology language code (parameter 1) has not been specified.")
	local itemname = args[2] or error("Function to call (parameter 2) has not been specified.")
	
	etymlang = require("Module:etymology languages").getByCode(etymlang) or error("The etymology language code '" .. etymlang .. "' is not valid.")
	
	-- The item that the caller wanted to look up
	if itemname == "getCanonicalName" then
		return etymlang:getCanonicalName()
	elseif itemname == "getAllNames" then
		local index = args[3]; if index == "" then index = nil end
		index = tonumber(index or error("Numeric index of the desired item in the list (parameter 3) has not been specified."))
		return etymlang:getAllNames()[index] or ""
	elseif itemname == "getParentCode" then
		return etymlang:getParentCode()
	elseif itemname == "getWikipediaArticle" then
		return etymlang:getWikipediaArticle()
	else
		error("Requested invalid item name \"" .. itemname .. "\".")
	end
end

function export.getByCanonicalName(frame)
	local args = frame.args
	local etymlang = args[1] or error("Etymology language name (parameter 1) has not been specified.")
	
	etymlang = require("Module:etymology languages").getByCanonicalName(etymlang)
	
	if etymlang then
		return etymlang:getCode()
	else
		return ""
	end
end

return export