Modul:languages/templates

This module provides access to Module:languages from templates, so that they can make use of the information stored there.

Exported functions

exists

{{#invoke:languages/templates|exists|(language code)}}

Check whether a language code exists and is valid. It will return "1" if the language code exists, and the empty string "" if it does not.

This is rarely needed, because a script error will result when someone uses a code that is not valid, so you do not need this just to check for errors. However, in case you need to decide different actions based on whether a certain parameter is a language code or something else, this function can be useful.

getByCode

{{#invoke:languages/templates|getByCode|(language code)|(item to look up)|(index)}}

Queries information about a language code.

• The language code should be one of the codes that is defined in Module:languages data. If it is missing or does not exist, the result will be a script error.
• The item is the name of one of the functions of a language object, such as getCanonicalName or getScripts. If no item has been provided, the result will be a script error.
• The index is optional, and is used for items that are lists, such as getAllNames or getScripts. It selects which item in the list to return. On items that are single strings, like getFamily, it has no effect. If an index is given that is higher than the number of items in the list, the result will be an empty string.

For example, to request the default (canonical) name of the language whose code is en:

{{#invoke:languages/templates|getByCode|en|getCanonicalName}}

• Result: Engelsch

To request its second name, if any:

{{#invoke:languages/templates|getByCode|en|getAllNames|2}}

• Result: English

To request its family:

{{#invoke:languages/templates|getByCode|en|getFamily}}

• Result: gmw

See also

• Module:JSON data — for exporting all the data at once

---

local export = {}

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

-- Used by the following JS:
-- * [[WT:ACCEL]]
-- * [[WT:EDIT]]
-- * [[WT:NEC]]
function export.getByCode(frame)
	local args = frame.args
	local langcode = args[1] or error("Language code has not been specified. Please pass parameter 1 to the module invocation.")
	local itemname = args[2] or error("Type of information to look up has not been specified. Please pass parameter 2 to the module invocation.")
	
	local lang = require("Modul:languages").getByCode(langcode)
	
	if not lang then
		error("The language code '" .. langcode .. "' is not valid.")
	end
	
	-- The item that the caller wanted to look up
	if itemname == "getAllNames" then
		local index = args[3]; if index == "" then index = nil end
		index = tonumber(index or error("Please specify the numeric index of the desired name."))
		return lang:getAllNames()[index] or ""
	elseif itemname == "getFamily" or itemname == "family" then
		if itemname == "family" then
			frame:expandTemplate{title = 'User:CodeCat/getFamily tracking', args = {} }
		end
		
		return lang:getFamily():getCode()
	elseif itemname == "getScripts" or itemname == "scripts" then
		if itemname == "scripts" then
			frame:expandTemplate{title = 'User:CodeCat/scriptsN tracking', args = {} }
		end
		
		local index = args[3]; if index == "" then index = nil end
		index = tonumber(index or error("Please specify the numeric index of the desired script."))
		local scripts = lang:getScripts()
		
		if scripts[index] then
			return scripts[index]:getCode()
		else
			return ""
		end
	elseif itemname == "transliterate" then
		local text = args[3]; if text == "" then text = nil end
		local sc = args[4]; if sc == "" then sc = nil end
		sc = (sc and (require("Modul:scripts").getByCode(sc) or error("The script code \"" .. sc .. "\" is not valid.")) or nil)
		return lang:transliterate(text, sc) or ""
	elseif lang[itemname] then
		local ret = lang[itemname](lang)
		
		if type(ret) == "string" then
			return ret
		else
			error("The function \"" .. itemname .. "\" did not return a string value.")
		end
	else
		error("Requested invalid item name \"" .. itemname .. "\".")
	end
end

function export.getByCanonicalName(frame)
	local args = frame.args
	local langname = args[1] or error("Language name has not been specified. Please pass parameter 1 to the module invocation.")
	
	local lang = require("Modul:languages").getByCanonicalName(langname)
	
	if lang then
		return lang:getCode()
	else
		return ""
	end
end

return export